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MMC core:

Browse Source 
- Fix a few memoryleaks
  - Minor improvements to the card initialization sequence
  - Partially support sleepy GPIO controllers for pwrseq eMMC
 
 MMC host:
  - alcor: Work with multiple-entry sglists
  - alcor: Enable DMA for writes
  - meson-gx: Improve tuning support
  - meson-gx: Avoid clock glitch when switching to DDR modes
  - meson-gx: Disable unreliable HS400 mode
  - mmci: Minor updates for support of HW busy detection
  - mmci: Support data transfers for the stm32_sdmmc variant
  - mmci: Restructure code to better support different variants
  - mtk-sd: Add support for version found on MT7620 family SOCs
  - mtk-sd: Add support for the MT8516 version
  - mtk-sd: Add Chaotian Jing as the maintainer
  - sdhci: Reorganize request-code to convert from tasklet to workqueue
  - sdhci_am654: Stabilize support for lower speed modes
  - sdhci-esdhc-imx: Add HS400 support for iMX7ULP
  - sdhci-esdhc-imx: Add support for iMX7ULP version
  - sdhci-of-arasan: Allow to disable DCMDs via DT for CQE
  - sdhci-of-esdhc: Add support for the ls1028a version
  - sdhci-of-esdhc: Several fixups for errata
  - sdhci-pci: Fix BYT OCP setting
  - sdhci-pci: Add support for Intel CML
  - sdhci-tegra: Add support for system suspend/resume
  - sdhci-tegra: Add CQE support for Tegra186 WAR
  - sdhci-tegra: Add support for Tegra194
  - sdhci-tegra: Update HW tuning process
 
 MEMSTICK:
  - I volunteered to help as a maintainer for the memstick subsystem, which is
    reflected by an update to the MAINTAINERS file. Changes are funneled through
    my MMC git and we will use the linux-mmc mailing list.
 
 MEMSTICK host:
  - A few minor cleanups
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Merge tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Fix a few memoryleaks
   - Minor improvements to the card initialization sequence
   - Partially support sleepy GPIO controllers for pwrseq eMMC

  MMC host:
   - alcor: Work with multiple-entry sglists
   - alcor: Enable DMA for writes
   - meson-gx: Improve tuning support
   - meson-gx: Avoid clock glitch when switching to DDR modes
   - meson-gx: Disable unreliable HS400 mode
   - mmci: Minor updates for support of HW busy detection
   - mmci: Support data transfers for the stm32_sdmmc variant
   - mmci: Restructure code to better support different variants
   - mtk-sd: Add support for version found on MT7620 family SOCs
   - mtk-sd: Add support for the MT8516 version
   - mtk-sd: Add Chaotian Jing as the maintainer
   - sdhci: Reorganize request-code to convert from tasklet to workqueue
   - sdhci_am654: Stabilize support for lower speed modes
   - sdhci-esdhc-imx: Add HS400 support for iMX7ULP
   - sdhci-esdhc-imx: Add support for iMX7ULP version
   - sdhci-of-arasan: Allow to disable DCMDs via DT for CQE
   - sdhci-of-esdhc: Add support for the ls1028a version
   - sdhci-of-esdhc: Several fixups for errata
   - sdhci-pci: Fix BYT OCP setting
   - sdhci-pci: Add support for Intel CML
   - sdhci-tegra: Add support for system suspend/resume
   - sdhci-tegra: Add CQE support for Tegra186 WAR
   - sdhci-tegra: Add support for Tegra194
   - sdhci-tegra: Update HW tuning process

  MEMSTICK:
   - I volunteered to help as a maintainer for the memstick subsystem,
     which is reflected by an update to the MAINTAINERS file. Changes
     are funneled through my MMC git and we will use the linux-mmc
     mailing list.

  MEMSTICK host:
   - A few minor cleanups"

* tag 'mmc-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (87 commits)
  mmc: sdhci-pci: Fix BYT OCP setting
  dt-bindings: mmc: add DT bindings for ls1028a eSDHC host controller
  mmc: alcor: Drop pointer to mmc_host from alcor_sdmmc_host
  mmc: mtk-sd: select REGULATOR
  mmc: mtk-sd: enable internal card-detect logic.
  mmc: mtk-sd: add support for config found in mt7620 family SOCs.
  mmc: mtk-sd: don't hard-code interrupt trigger type
  mmc: core: Fix tag set memory leak
  dt-bindings: mmc: Add support for MT8516 to mtk-sd
  mmc: mmci: Prevent polling for busy detection in IRQ context
  mmc: mmci: Cleanup mmci_cmd_irq() for busy detect
  mmc: usdhi6rol0: mark expected switch fall-throughs
  mmc: core: Verify SD bus width
  mmc: sdhci-esdhc-imx: Add HS400 support for iMX7ULP
  mmc: sdhci-esdhc-imx: add pm_qos to interact with cpuidle
  dt-bindings: mmc: fsl-imx-esdhc: add imx7ulp compatible string
  mmc: meson-gx: add signal resampling tuning
  mmc: meson-gx: remove Rx phase tuning
  mmc: meson-gx: avoid clock glitch when switching to DDR modes
  mmc: meson-gx: disable HS400
  ...
This commit is contained in:
Linus Torvalds 2019-05-07 12:56:19 -07:00
commit 01e5d1830c
46 changed files with 1185 additions and 681 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
Documentation/devicetree/bindings/mmc/fsl-esdhc.txt
View File

@ -17,6 +17,7 @@ Required properties:
"fsl,t4240-esdhc"
Possible compatibles for ARM:
"fsl,ls1012a-esdhc"
"fsl,ls1028a-esdhc"
"fsl,ls1088a-esdhc"
"fsl,ls1043a-esdhc"
"fsl,ls1046a-esdhc"

1
Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.txt
View File

@ -17,6 +17,7 @@ Required properties:
"fsl,imx6sx-usdhc"
"fsl,imx6ull-usdhc"
"fsl,imx7d-usdhc"
"fsl,imx7ulp-usdhc"
"fsl,imx8qxp-usdhc"
Optional properties:

2
Documentation/devicetree/bindings/mmc/mmc.txt
View File

@ -64,6 +64,8 @@ Optional properties:
whether pwrseq-simple is used. Default to 10ms if no available.
- supports-cqe : The presence of this property indicates that the corresponding
MMC host controller supports HW command queue feature.
- disable-cqe-dcmd: This property indicates that the MMC controller's command
queue engine (CQE) does not support direct commands (DCMDs).
*NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line
polarity properties, we have to fix the meaning of the "normal" and "inverted"

2
Documentation/devicetree/bindings/mmc/mtk-sd.txt
View File

@ -11,10 +11,12 @@ Required properties:
"mediatek,mt8135-mmc": for mmc host ip compatible with mt8135
"mediatek,mt8173-mmc": for mmc host ip compatible with mt8173
"mediatek,mt8183-mmc": for mmc host ip compatible with mt8183
"mediatek,mt8516-mmc": for mmc host ip compatible with mt8516
"mediatek,mt2701-mmc": for mmc host ip compatible with mt2701
"mediatek,mt2712-mmc": for mmc host ip compatible with mt2712
"mediatek,mt7622-mmc": for MT7622 SoC
"mediatek,mt7623-mmc", "mediatek,mt2701-mmc": for MT7623 SoC
"mediatek,mt7620-mmc", for MT7621 SoC (and others)
- reg: physical base address of the controller and length
- interrupts: Should contain MSDC interrupt number

1
Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.txt
View File

@ -14,6 +14,7 @@ Required properties:
- "nvidia,tegra124-sdhci": for Tegra124 and Tegra132
- "nvidia,tegra210-sdhci": for Tegra210
- "nvidia,tegra186-sdhci": for Tegra186
- "nvidia,tegra194-sdhci": for Tegra194
- clocks : Must contain one entry, for the module clock.
See ../clocks/clock-bindings.txt for details.
- resets : Must contain an entry for each entry in reset-names.

25
MAINTAINERS
View File

@ -9785,6 +9785,12 @@ F: drivers/media/platform/mtk-vpu/
F: Documentation/devicetree/bindings/media/mediatek-vcodec.txt
F: Documentation/devicetree/bindings/media/mediatek-vpu.txt
MEDIATEK MMC/SD/SDIO DRIVER
M: Chaotian Jing <chaotian.jing@mediatek.com>
S: Maintained
F: drivers/mmc/host/mtk-sd.c
F: Documentation/devicetree/bindings/mmc/mtk-sd.txt
MEDIATEK MT76 WIRELESS LAN DRIVER
M: Felix Fietkau <nbd@nbd.name>
M: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
@ -14484,16 +14490,15 @@ T: git git://linuxtv.org/media_tree.git
S: Maintained
F: drivers/media/i2c/imx355.c
SONY MEMORYSTICK CARD SUPPORT
M: Alex Dubov <oakad@yahoo.com>
W: http://tifmxx.berlios.de/
S: Maintained
F: drivers/memstick/host/tifm_ms.c
SONY MEMORYSTICK STANDARD SUPPORT
SONY MEMORYSTICK SUBSYSTEM
M: Maxim Levitsky <maximlevitsky@gmail.com>
M: Alex Dubov <oakad@yahoo.com>
M: Ulf Hansson <ulf.hansson@linaro.org>
L: linux-mmc@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc.git
S: Maintained
F: drivers/memstick/core/ms_block.*
F: drivers/memstick/
F: include/linux/memstick.h
SONY VAIO CONTROL DEVICE DRIVER
M: Mattia Dongili <malattia@linux.it>
@ -15518,9 +15523,11 @@ S: Maintained
F: drivers/net/ethernet/ti/cpsw*
F: drivers/net/ethernet/ti/davinci*
TI FLASH MEDIA INTERFACE DRIVER
TI FLASH MEDIA MEMORYSTICK/MMC DRIVERS
M: Alex Dubov <oakad@yahoo.com>
S: Maintained
W: http://tifmxx.berlios.de/
F: drivers/memstick/host/tifm_ms.c
F: drivers/misc/tifm*
F: drivers/mmc/host/tifm_sd.c
F: include/linux/tifm.h

3
drivers/memstick/host/jmb38x_ms.c
View File

@ -370,7 +370,6 @@ static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
unsigned char *data;
unsigned int data_len, cmd, t_val;
if (!(STATUS_HAS_MEDIA & readl(host->addr + STATUS))) {
@ -402,8 +401,6 @@ static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
cmd |= TPC_WAIT_INT;
}
data = host->req->data;
if (!no_dma)
host->cmd_flags |= DMA_DATA;

3
drivers/memstick/host/tifm_ms.c
View File

@ -256,7 +256,6 @@ static unsigned int tifm_ms_transfer_data(struct tifm_ms *host)
static int tifm_ms_issue_cmd(struct tifm_ms *host)
{
struct tifm_dev *sock = host->dev;
unsigned char *data;
unsigned int data_len, cmd, sys_param;
host->cmd_flags = 0;
@ -265,8 +264,6 @@ static int tifm_ms_issue_cmd(struct tifm_ms *host)
host->io_word = 0;
host->cmd_flags = 0;
data = host->req->data;
host->use_dma = !no_dma;
if (host->req->long_data) {

4
drivers/mmc/core/host.c
View File

@ -363,11 +363,11 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
int num_ranges, i;
voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges);
num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
if (!voltage_ranges) {
pr_debug("%pOF: voltage-ranges unspecified\n", np);
return 0;
}
num_ranges = num_ranges / sizeof(*voltage_ranges) / 2;
if (!num_ranges) {
pr_err("%pOF: voltage-ranges empty\n", np);
return -EINVAL;
@ -429,8 +429,6 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
if (mmc_gpio_alloc(host)) {
put_device(&host->class_dev);
ida_simple_remove(&mmc_host_ida, host->index);
kfree(host);
return NULL;
}

16
drivers/mmc/core/mmc_ops.c
View File

@ -184,11 +184,7 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
if (err)
break;
/* if we're just probing, do a single pass */
if (ocr == 0)
break;
/* otherwise wait until reset completes */
/* wait until reset completes */
if (mmc_host_is_spi(host)) {
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
@ -200,6 +196,16 @@ int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
err = -ETIMEDOUT;
mmc_delay(10);
/*
* According to eMMC specification v5.1 section 6.4.3, we
* should issue CMD1 repeatedly in the idle state until
* the eMMC is ready. Otherwise some eMMC devices seem to enter
* the inactive mode after mmc_init_card() issued CMD0 when
* the eMMC device is busy.
*/
if (!ocr && !mmc_host_is_spi(host))
cmd.arg = cmd.resp[0] | BIT(30);
}
if (rocr && !mmc_host_is_spi(host))

22
drivers/mmc/core/pwrseq_emmc.c
View File

@ -30,19 +30,14 @@ struct mmc_pwrseq_emmc {
#define to_pwrseq_emmc(p) container_of(p, struct mmc_pwrseq_emmc, pwrseq)
static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
{
gpiod_set_value(pwrseq->reset_gpio, 1);
udelay(1);
gpiod_set_value(pwrseq->reset_gpio, 0);
udelay(200);
}
static void mmc_pwrseq_emmc_reset(struct mmc_host *host)
{
struct mmc_pwrseq_emmc *pwrseq = to_pwrseq_emmc(host->pwrseq);
__mmc_pwrseq_emmc_reset(pwrseq);
gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
udelay(1);
gpiod_set_value_cansleep(pwrseq->reset_gpio, 0);
udelay(200);
}
static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
@ -50,8 +45,11 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
{
struct mmc_pwrseq_emmc *pwrseq = container_of(this,
struct mmc_pwrseq_emmc, reset_nb);
gpiod_set_value(pwrseq->reset_gpio, 1);
udelay(1);
gpiod_set_value(pwrseq->reset_gpio, 0);
udelay(200);
__mmc_pwrseq_emmc_reset(pwrseq);
return NOTIFY_DONE;
}
@ -72,6 +70,7 @@ static int mmc_pwrseq_emmc_probe(struct platform_device *pdev)
if (IS_ERR(pwrseq->reset_gpio))
return PTR_ERR(pwrseq->reset_gpio);
if (!gpiod_cansleep(pwrseq->reset_gpio)) {
/*
* register reset handler to ensure emmc reset also from
* emergency_reboot(), priority 255 is the highest priority
@ -80,6 +79,9 @@ static int mmc_pwrseq_emmc_probe(struct platform_device *pdev)
pwrseq->reset_nb.notifier_call = mmc_pwrseq_emmc_reset_nb;
pwrseq->reset_nb.priority = 255;
register_restart_handler(&pwrseq->reset_nb);
} else {
dev_notice(dev, "EMMC reset pin tied to a sleepy GPIO driver; reset on emergency-reboot disabled\n");
}
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;
pwrseq->pwrseq.dev = dev;

1
drivers/mmc/core/queue.c
View File

@ -472,6 +472,7 @@ void mmc_cleanup_queue(struct mmc_queue *mq)
blk_mq_unquiesce_queue(q);
blk_cleanup_queue(q);
blk_mq_free_tag_set(&mq->tag_set);
/*
* A request can be completed before the next request, potentially

8
drivers/mmc/core/sd.c
View File

@ -221,6 +221,14 @@ static int mmc_decode_scr(struct mmc_card *card)
if (scr->sda_spec3)
scr->cmds = UNSTUFF_BITS(resp, 32, 2);
/* SD Spec says: any SD Card shall set at least bits 0 and 2 */
if (!(scr->bus_widths & SD_SCR_BUS_WIDTH_1) ||
!(scr->bus_widths & SD_SCR_BUS_WIDTH_4)) {
pr_err("%s: invalid bus width\n", mmc_hostname(card->host));
return -EINVAL;
}
return 0;
}

4
drivers/mmc/host/Kconfig
View File

@ -92,6 +92,7 @@ config MMC_SDHCI_PCI
tristate "SDHCI support on PCI bus"
depends on MMC_SDHCI && PCI
select MMC_CQHCI
select IOSF_MBI if X86
help
This selects the PCI Secure Digital Host Controller Interface.
Most controllers found today are PCI devices.
@ -941,6 +942,7 @@ config MMC_BCM2835
config MMC_MTK
tristate "MediaTek SD/MMC Card Interface support"
depends on HAS_DMA
select REGULATOR
help
This selects the MediaTek(R) Secure digital and Multimedia card Interface.
If you have a machine with a integrated SD/MMC card reader, say Y or M here.
@ -957,6 +959,7 @@ config MMC_SDHCI_MICROCHIP_PIC32
If you have a controller with this interface, say Y or M here.
If unsure, say N.
config MMC_SDHCI_BRCMSTB
tristate "Broadcom SDIO/SD/MMC support"
depends on ARCH_BRCMSTB || BMIPS_GENERIC
@ -993,6 +996,7 @@ config MMC_SDHCI_OMAP
config MMC_SDHCI_AM654
tristate "Support for the SDHCI Controller in TI's AM654 SOCs"
depends on MMC_SDHCI_PLTFM && OF
select MMC_SDHCI_IO_ACCESSORS
help
This selects the Secure Digital Host Controller Interface (SDHCI)
support present in TI's AM654 SOCs. The controller supports

72
drivers/mmc/host/alcor.c
View File

@ -43,7 +43,6 @@ struct alcor_sdmmc_host {
struct device *dev;
struct alcor_pci_priv *alcor_pci;
struct mmc_host *mmc;
struct mmc_request *mrq;
struct mmc_command *cmd;
struct mmc_data *data;
@ -117,6 +116,9 @@ static void alcor_reset(struct alcor_sdmmc_host *host, u8 val)
dev_err(host->dev, "%s: timeout\n", __func__);
}
/*
* Perform DMA I/O of a single page.
*/
static void alcor_data_set_dma(struct alcor_sdmmc_host *host)
{
struct alcor_pci_priv *priv = host->alcor_pci;
@ -153,12 +155,26 @@ static void alcor_trigger_data_transfer(struct alcor_sdmmc_host *host)
ctrl |= AU6601_DATA_WRITE;
if (data->host_cookie == COOKIE_MAPPED) {
/*
* For DMA transfers, this function is called just once,
* at the start of the operation. The hardware can only
* perform DMA I/O on a single page at a time, so here
* we kick off the transfer with the first page, and expect
* subsequent pages to be transferred upon IRQ events
* indicating that the single-page DMA was completed.
*/
alcor_data_set_dma(host);
ctrl |= AU6601_DATA_DMA_MODE;
host->dma_on = 1;
alcor_write32(priv, data->sg_count * 0x1000,
AU6601_REG_BLOCK_SIZE);
} else {
/*
* For PIO transfers, we break down each operation
* into several sector-sized transfers. When one sector has
* complete, the IRQ handler will call this function again
* to kick off the transfer of the next sector.
*/
alcor_write32(priv, data->blksz, AU6601_REG_BLOCK_SIZE);
}
@ -276,7 +292,7 @@ static void alcor_send_cmd(struct alcor_sdmmc_host *host,
break;
default:
dev_err(host->dev, "%s: cmd->flag (0x%02x) is not valid\n",
mmc_hostname(host->mmc), mmc_resp_type(cmd));
mmc_hostname(mmc_from_priv(host)), mmc_resp_type(cmd));
break;
}
@ -317,7 +333,7 @@ static void alcor_request_complete(struct alcor_sdmmc_host *host,
host->data = NULL;
host->dma_on = 0;
mmc_request_done(host->mmc, mrq);
mmc_request_done(mmc_from_priv(host), mrq);
}
static void alcor_finish_data(struct alcor_sdmmc_host *host)
@ -547,7 +563,7 @@ static void alcor_cd_irq(struct alcor_sdmmc_host *host, u32 intmask)
alcor_request_complete(host, 1);
}
mmc_detect_change(host->mmc, msecs_to_jiffies(1));
mmc_detect_change(mmc_from_priv(host), msecs_to_jiffies(1));
}
static irqreturn_t alcor_irq_thread(int irq, void *d)
@ -771,12 +787,17 @@ static void alcor_pre_req(struct mmc_host *mmc,
data->host_cookie = COOKIE_UNMAPPED;
/* FIXME: looks like the DMA engine works only with CMD18 */
if (cmd->opcode != 18)
if (cmd->opcode != MMC_READ_MULTIPLE_BLOCK
&& cmd->opcode != MMC_WRITE_MULTIPLE_BLOCK)
return;
/*
* We don't do DMA on "complex" transfers, i.e. with
* non-word-aligned buffers or lengths. Also, we don't bother
* with all the DMA setup overhead for short transfers.
* non-word-aligned buffers or lengths. A future improvement
* could be made to use temporary DMA bounce-buffers when these
* requirements are not met.
*
* Also, we don't bother with all the DMA setup overhead for
* short transfers.
*/
if (data->blocks * data->blksz < AU6601_MAX_DMA_BLOCK_SIZE)
return;
@ -787,6 +808,8 @@ static void alcor_pre_req(struct mmc_host *mmc,
for_each_sg(data->sg, sg, data->sg_len, i) {
if (sg->length != AU6601_MAX_DMA_BLOCK_SIZE)
return;
if (sg->offset != 0)
return;
}
/* This data might be unmapped at this time */
@ -1024,7 +1047,7 @@ static void alcor_hw_uninit(struct alcor_sdmmc_host *host)
static void alcor_init_mmc(struct alcor_sdmmc_host *host)
{
struct mmc_host *mmc = host->mmc;
struct mmc_host *mmc = mmc_from_priv(host);
mmc->f_min = AU6601_MIN_CLOCK;
mmc->f_max = AU6601_MAX_CLOCK;
@ -1036,26 +1059,21 @@ static void alcor_init_mmc(struct alcor_sdmmc_host *host)
mmc->ops = &alcor_sdc_ops;
/* The hardware does DMA data transfer of 4096 bytes to/from a single
* buffer address. Scatterlists are not supported, but upon DMA
* completion (signalled via IRQ), the original vendor driver does
* then immediately set up another DMA transfer of the next 4096
* bytes.
* buffer address. Scatterlists are not supported at the hardware
* level, however we can work with them at the driver level,
* provided that each segment is exactly 4096 bytes in size.
* Upon DMA completion of a single segment (signalled via IRQ), we
* immediately proceed to transfer the next segment from the
* scatterlist.
*
* This means that we need to handle the I/O in 4096 byte chunks.
* Lacking a way to limit the sglist entries to 4096 bytes, we instead
* impose that only one segment is provided, with maximum size 4096,
* which also happens to be the minimum size. This means that the
* single-entry sglist handled by this driver can be handed directly
* to the hardware, nice and simple.
*
* Unfortunately though, that means we only do 4096 bytes I/O per
* MMC command. A future improvement would be to make the driver
* accept sg lists and entries of any size, and simply iterate
* through them 4096 bytes at a time.
* The overall request is limited to 240 sectors, matching the
* original vendor driver.
*/
mmc->max_segs = AU6601_MAX_DMA_SEGMENTS;
mmc->max_seg_size = AU6601_MAX_DMA_BLOCK_SIZE;
mmc->max_req_size = mmc->max_seg_size;
mmc->max_blk_count = 240;
mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size;
dma_set_max_seg_size(host->dev, mmc->max_seg_size);
}
static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
@ -1072,7 +1090,6 @@ static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->dev = &pdev->dev;
host->cur_power_mode = MMC_POWER_UNDEFINED;
host->alcor_pci = priv;
@ -1104,13 +1121,14 @@ static int alcor_pci_sdmmc_drv_probe(struct platform_device *pdev)
static int alcor_pci_sdmmc_drv_remove(struct platform_device *pdev)
{
struct alcor_sdmmc_host *host = dev_get_drvdata(&pdev->dev);
struct mmc_host *mmc = mmc_from_priv(host);
if (cancel_delayed_work_sync(&host->timeout_work))
alcor_request_complete(host, 0);
alcor_hw_uninit(host);
mmc_remove_host(host->mmc);
mmc_free_host(host->mmc);
mmc_remove_host(mmc);
mmc_free_host(mmc);
return 0;
}

2
drivers/mmc/host/cqhci.c
View File

@ -537,6 +537,8 @@ static void cqhci_prep_dcmd_desc(struct mmc_host *mmc,
CQHCI_ACT(0x5) |
CQHCI_CMD_INDEX(mrq->cmd->opcode) |
CQHCI_CMD_TIMING(timing) | CQHCI_RESP_TYPE(resp_type));
if (cq_host->ops->update_dcmd_desc)
cq_host->ops->update_dcmd_desc(mmc, mrq, &data);
*task_desc |= data;
desc = (u8 *)task_desc;
pr_debug("%s: cqhci: dcmd: cmd: %d timing: %d resp: %d\n",

4
drivers/mmc/host/cqhci.h
View File

@ -88,6 +88,7 @@
/* send status config 1 */
#define CQHCI_SSC1 0x40
#define CQHCI_SSC1_CBC_MASK GENMASK(19, 16)
/* send status config 2 */
#define CQHCI_SSC2 0x44
@ -147,6 +148,7 @@
struct cqhci_host_ops;
struct mmc_host;
struct mmc_request;
struct cqhci_slot;
struct cqhci_host {
@ -210,6 +212,8 @@ struct cqhci_host_ops {
u32 (*read_l)(struct cqhci_host *host, int reg);
void (*enable)(struct mmc_host *mmc);
void (*disable)(struct mmc_host *mmc, bool recovery);
void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq,
u64 *data);
};
static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg)

445
drivers/mmc/host/meson-gx-mmc.c
View File

@ -23,6 +23,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/iopoll.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/ioport.h>
@ -48,6 +49,8 @@
#define CLK_CORE_PHASE_MASK GENMASK(9, 8)
#define CLK_TX_PHASE_MASK GENMASK(11, 10)
#define CLK_RX_PHASE_MASK GENMASK(13, 12)
#define CLK_PHASE_0 0
#define CLK_PHASE_180 2
#define CLK_V2_TX_DELAY_MASK GENMASK(19, 16)
#define CLK_V2_RX_DELAY_MASK GENMASK(23, 20)
#define CLK_V2_ALWAYS_ON BIT(24)
@ -56,10 +59,6 @@
#define CLK_V3_RX_DELAY_MASK GENMASK(27, 22)
#define CLK_V3_ALWAYS_ON BIT(28)
#define CLK_DELAY_STEP_PS 200
#define CLK_PHASE_STEP 30
#define CLK_PHASE_POINT_NUM (360 / CLK_PHASE_STEP)
#define CLK_TX_DELAY_MASK(h) (h->data->tx_delay_mask)
#define CLK_RX_DELAY_MASK(h) (h->data->rx_delay_mask)
#define CLK_ALWAYS_ON(h) (h->data->always_on)
@ -164,10 +163,10 @@ struct meson_host {
void __iomem *regs;
struct clk *core_clk;
struct clk *mux_clk;
struct clk *mmc_clk;
struct clk *rx_clk;
struct clk *tx_clk;
unsigned long req_rate;
bool ddr;
struct pinctrl *pinctrl;
struct pinctrl_state *pins_default;
@ -207,90 +206,6 @@ struct meson_host {
#define CMD_RESP_MASK GENMASK(31, 1)
#define CMD_RESP_SRAM BIT(0)
struct meson_mmc_phase {
struct clk_hw hw;
void __iomem *reg;
unsigned long phase_mask;
unsigned long delay_mask;
unsigned int delay_step_ps;
};
#define to_meson_mmc_phase(_hw) container_of(_hw, struct meson_mmc_phase, hw)
static int meson_mmc_clk_get_phase(struct clk_hw *hw)
{
struct meson_mmc_phase *mmc = to_meson_mmc_phase(hw);
unsigned int phase_num = 1 << hweight_long(mmc->phase_mask);
unsigned long period_ps, p, d;
int degrees;
u32 val;
val = readl(mmc->reg);
p = (val & mmc->phase_mask) >> __ffs(mmc->phase_mask);
degrees = p * 360 / phase_num;
if (mmc->delay_mask) {
period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000,
clk_get_rate(hw->clk));
d = (val & mmc->delay_mask) >> __ffs(mmc->delay_mask);
degrees += d * mmc->delay_step_ps * 360 / period_ps;
degrees %= 360;
}
return degrees;
}
static void meson_mmc_apply_phase_delay(struct meson_mmc_phase *mmc,
unsigned int phase,
unsigned int delay)
{
u32 val;
val = readl(mmc->reg);
val &= ~mmc->phase_mask;
val |= phase << __ffs(mmc->phase_mask);
if (mmc->delay_mask) {
val &= ~mmc->delay_mask;
val |= delay << __ffs(mmc->delay_mask);
}
writel(val, mmc->reg);
}
static int meson_mmc_clk_set_phase(struct clk_hw *hw, int degrees)
{
struct meson_mmc_phase *mmc = to_meson_mmc_phase(hw);
unsigned int phase_num = 1 << hweight_long(mmc->phase_mask);
unsigned long period_ps, d = 0, r;
uint64_t p;
p = degrees % 360;
if (!mmc->delay_mask) {
p = DIV_ROUND_CLOSEST_ULL(p, 360 / phase_num);
} else {
period_ps = DIV_ROUND_UP((unsigned long)NSEC_PER_SEC * 1000,
clk_get_rate(hw->clk));
/* First compute the phase index (p), the remainder (r) is the
* part we'll try to acheive using the delays (d).
*/
r = do_div(p, 360 / phase_num);
d = DIV_ROUND_CLOSEST(r * period_ps,
360 * mmc->delay_step_ps);
d = min(d, mmc->delay_mask >> __ffs(mmc->delay_mask));
}
meson_mmc_apply_phase_delay(mmc, p, d);
return 0;
}
static const struct clk_ops meson_mmc_clk_phase_ops = {
.get_phase = meson_mmc_clk_get_phase,
.set_phase = meson_mmc_clk_set_phase,
};
static unsigned int meson_mmc_get_timeout_msecs(struct mmc_data *data)
{
unsigned int timeout = data->timeout_ns / NSEC_PER_MSEC;
@ -383,16 +298,6 @@ static void meson_mmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
mmc_get_dma_dir(data));
}
static bool meson_mmc_timing_is_ddr(struct mmc_ios *ios)
{
if (ios->timing == MMC_TIMING_MMC_DDR52 ||
ios->timing == MMC_TIMING_UHS_DDR50 ||
ios->timing == MMC_TIMING_MMC_HS400)
return true;
return false;
}
/*
* Gating the clock on this controller is tricky. It seems the mmc clock
* is also used by the controller. It may crash during some operation if the
@ -429,36 +334,41 @@ static void meson_mmc_clk_ungate(struct meson_host *host)
writel(cfg, host->regs + SD_EMMC_CFG);
}
static int meson_mmc_clk_set(struct meson_host *host, struct mmc_ios *ios)
static int meson_mmc_clk_set(struct meson_host *host, unsigned long rate,
bool ddr)
{
struct mmc_host *mmc = host->mmc;
unsigned long rate = ios->clock;
int ret;
u32 cfg;
/* DDR modes require higher module clock */
if (meson_mmc_timing_is_ddr(ios))
rate <<= 1;
/* Same request - bail-out */
if (host->req_rate == rate)
if (host->ddr == ddr && host->req_rate == rate)
return 0;
/* stop clock */
meson_mmc_clk_gate(host);
host->req_rate = 0;
if (!rate) {
mmc->actual_clock = 0;
/* return with clock being stopped */
if (!rate)
return 0;
}
/* Stop the clock during rate change to avoid glitches */
cfg = readl(host->regs + SD_EMMC_CFG);
cfg |= CFG_STOP_CLOCK;
writel(cfg, host->regs + SD_EMMC_CFG);
if (ddr) {
/* DDR modes require higher module clock */
rate <<= 1;
cfg |= CFG_DDR;
} else {
cfg &= ~CFG_DDR;
}
writel(cfg, host->regs + SD_EMMC_CFG);
host->ddr = ddr;
ret = clk_set_rate(host->mmc_clk, rate);
if (ret) {
dev_err(host->dev, "Unable to set cfg_div_clk to %lu. ret=%d\n",
@ -470,12 +380,14 @@ static int meson_mmc_clk_set(struct meson_host *host, struct mmc_ios *ios)
mmc->actual_clock = clk_get_rate(host->mmc_clk);
/* We should report the real output frequency of the controller */
if (meson_mmc_timing_is_ddr(ios))
if (ddr) {
host->req_rate >>= 1;
mmc->actual_clock >>= 1;
}
dev_dbg(host->dev, "clk rate: %u Hz\n", mmc->actual_clock);
if (ios->clock != mmc->actual_clock)
dev_dbg(host->dev, "requested rate was %u\n", ios->clock);
if (rate != mmc->actual_clock)
dev_dbg(host->dev, "requested rate was %lu\n", rate);
/* (re)start clock */
meson_mmc_clk_ungate(host);
@ -493,8 +405,6 @@ static int meson_mmc_clk_init(struct meson_host *host)
struct clk_init_data init;
struct clk_mux *mux;
struct clk_divider *div;
struct meson_mmc_phase *core, *tx, *rx;
struct clk *clk;
char clk_name[32];
int i, ret = 0;
const char *mux_parent_names[MUX_CLK_NUM_PARENTS];
@ -502,9 +412,11 @@ static int meson_mmc_clk_init(struct meson_host *host)
u32 clk_reg;
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
clk_reg = 0;
clk_reg |= CLK_ALWAYS_ON(host);
clk_reg = CLK_ALWAYS_ON(host);
clk_reg |= CLK_DIV_MASK;
clk_reg |= FIELD_PREP(CLK_CORE_PHASE_MASK, CLK_PHASE_180);
clk_reg |= FIELD_PREP(CLK_TX_PHASE_MASK, CLK_PHASE_0);
clk_reg |= FIELD_PREP(CLK_RX_PHASE_MASK, CLK_PHASE_0);
writel(clk_reg, host->regs + SD_EMMC_CLOCK);
/* get the mux parents */
@ -540,9 +452,9 @@ static int meson_mmc_clk_init(struct meson_host *host)
mux->mask = CLK_SRC_MASK >> mux->shift;
mux->hw.init = &init;
clk = devm_clk_register(host->dev, &mux->hw);
if (WARN_ON(IS_ERR(clk)))
return PTR_ERR(clk);
host->mux_clk = devm_clk_register(host->dev, &mux->hw);
if (WARN_ON(IS_ERR(host->mux_clk)))
return PTR_ERR(host->mux_clk);
/* create the divider */
div = devm_kzalloc(host->dev, sizeof(*div), GFP_KERNEL);
@ -553,7 +465,7 @@ static int meson_mmc_clk_init(struct meson_host *host)
init.name = clk_name;
init.ops = &clk_divider_ops;
init.flags = CLK_SET_RATE_PARENT;
clk_parent[0] = __clk_get_name(clk);
clk_parent[0] = __clk_get_name(host->mux_clk);
init.parent_names = clk_parent;
init.num_parents = 1;
@ -563,190 +475,104 @@ static int meson_mmc_clk_init(struct meson_host *host)
div->hw.init = &init;
div->flags = CLK_DIVIDER_ONE_BASED;
clk = devm_clk_register(host->dev, &div->hw);
if (WARN_ON(IS_ERR(clk)))
return PTR_ERR(clk);
/* create the mmc core clock */
core = devm_kzalloc(host->dev, sizeof(*core), GFP_KERNEL);
if (!core)
return -ENOMEM;
snprintf(clk_name, sizeof(clk_name), "%s#core", dev_name(host->dev));
init.name = clk_name;
init.ops = &meson_mmc_clk_phase_ops;
init.flags = CLK_SET_RATE_PARENT;
clk_parent[0] = __clk_get_name(clk);
init.parent_names = clk_parent;
init.num_parents = 1;
core->reg = host->regs + SD_EMMC_CLOCK;
core->phase_mask = CLK_CORE_PHASE_MASK;
core->hw.init = &init;
host->mmc_clk = devm_clk_register(host->dev, &core->hw);
if (WARN_ON(PTR_ERR_OR_ZERO(host->mmc_clk)))
host->mmc_clk = devm_clk_register(host->dev, &div->hw);
if (WARN_ON(IS_ERR(host->mmc_clk)))
return PTR_ERR(host->mmc_clk);
/* create the mmc tx clock */
tx = devm_kzalloc(host->dev, sizeof(*tx), GFP_KERNEL);
if (!tx)
return -ENOMEM;
snprintf(clk_name, sizeof(clk_name), "%s#tx", dev_name(host->dev));
init.name = clk_name;
init.ops = &meson_mmc_clk_phase_ops;
init.flags = 0;
clk_parent[0] = __clk_get_name(host->mmc_clk);
init.parent_names = clk_parent;
init.num_parents = 1;
tx->reg = host->regs + SD_EMMC_CLOCK;
tx->phase_mask = CLK_TX_PHASE_MASK;
tx->delay_mask = CLK_TX_DELAY_MASK(host);
tx->delay_step_ps = CLK_DELAY_STEP_PS;
tx->hw.init = &init;
host->tx_clk = devm_clk_register(host->dev, &tx->hw);
if (WARN_ON(PTR_ERR_OR_ZERO(host->tx_clk)))
return PTR_ERR(host->tx_clk);
/* create the mmc rx clock */
rx = devm_kzalloc(host->dev, sizeof(*rx), GFP_KERNEL);
if (!rx)
return -ENOMEM;
snprintf(clk_name, sizeof(clk_name), "%s#rx", dev_name(host->dev));
init.name = clk_name;
init.ops = &meson_mmc_clk_phase_ops;
init.flags = 0;
clk_parent[0] = __clk_get_name(host->mmc_clk);
init.parent_names = clk_parent;
init.num_parents = 1;
rx->reg = host->regs + SD_EMMC_CLOCK;
rx->phase_mask = CLK_RX_PHASE_MASK;
rx->delay_mask = CLK_RX_DELAY_MASK(host);
rx->delay_step_ps = CLK_DELAY_STEP_PS;
rx->hw.init = &init;
host->rx_clk = devm_clk_register(host->dev, &rx->hw);
if (WARN_ON(PTR_ERR_OR_ZERO(host->rx_clk)))
return PTR_ERR(host->rx_clk);
/* init SD_EMMC_CLOCK to sane defaults w/min clock rate */
host->mmc->f_min = clk_round_rate(host->mmc_clk, 400000);
ret = clk_set_rate(host->mmc_clk, host->mmc->f_min);
if (ret)
return ret;
clk_set_phase(host->mmc_clk, 180);
clk_set_phase(host->tx_clk, 0);
clk_set_phase(host->rx_clk, 0);
return clk_prepare_enable(host->mmc_clk);
}
static void meson_mmc_shift_map(unsigned long *map, unsigned long shift)
static void meson_mmc_disable_resampling(struct meson_host *host)
{
DECLARE_BITMAP(left, CLK_PHASE_POINT_NUM);
DECLARE_BITMAP(right, CLK_PHASE_POINT_NUM);
unsigned int val = readl(host->regs + host->data->adjust);
/*
* shift the bitmap right and reintroduce the dropped bits on the left
* of the bitmap
*/
bitmap_shift_right(right, map, shift, CLK_PHASE_POINT_NUM);
bitmap_shift_left(left, map, CLK_PHASE_POINT_NUM - shift,
CLK_PHASE_POINT_NUM);
bitmap_or(map, left, right, CLK_PHASE_POINT_NUM);
val &= ~ADJUST_ADJ_EN;
writel(val, host->regs + host->data->adjust);
}
static void meson_mmc_find_next_region(unsigned long *map,
unsigned long *start,
unsigned long *stop)
static void meson_mmc_reset_resampling(struct meson_host *host)
{
*start = find_next_bit(map, CLK_PHASE_POINT_NUM, *start);
*stop = find_next_zero_bit(map, CLK_PHASE_POINT_NUM, *start);
unsigned int val;
meson_mmc_disable_resampling(host);
val = readl(host->regs + host->data->adjust);
val &= ~ADJUST_ADJ_DELAY_MASK;
writel(val, host->regs + host->data->adjust);
}
static int meson_mmc_find_tuning_point(unsigned long *test)
{
unsigned long shift, stop, offset = 0, start = 0, size = 0;
/* Get the all good/all bad situation out the way */
if (bitmap_full(test, CLK_PHASE_POINT_NUM))
return 0; /* All points are good so point 0 will do */
else if (bitmap_empty(test, CLK_PHASE_POINT_NUM))
return -EIO; /* No successful tuning point */
/*
* Now we know there is a least one region find. Make sure it does
* not wrap by the shifting the bitmap if necessary
*/
shift = find_first_zero_bit(test, CLK_PHASE_POINT_NUM);
if (shift != 0)
meson_mmc_shift_map(test, shift);
while (start < CLK_PHASE_POINT_NUM) {
meson_mmc_find_next_region(test, &start, &stop);
if ((stop - start) > size) {
offset = start;
size = stop - start;
}
start = stop;
}
/* Get the center point of the region */
offset += (size / 2);
/* Shift the result back */
offset = (offset + shift) % CLK_PHASE_POINT_NUM;
return offset;
}
static int meson_mmc_clk_phase_tuning(struct mmc_host *mmc, u32 opcode,
struct clk *clk)
{
int point, ret;
DECLARE_BITMAP(test, CLK_PHASE_POINT_NUM);
dev_dbg(mmc_dev(mmc), "%s phase/delay tunning...\n",
__clk_get_name(clk));
bitmap_zero(test, CLK_PHASE_POINT_NUM);
/* Explore tuning points */
for (point = 0; point < CLK_PHASE_POINT_NUM; point++) {
clk_set_phase(clk, point * CLK_PHASE_STEP);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret)
set_bit(point, test);
}
/* Find the optimal tuning point and apply it */
point = meson_mmc_find_tuning_point(test);
if (point < 0)
return point; /* tuning failed */
clk_set_phase(clk, point * CLK_PHASE_STEP);
dev_dbg(mmc_dev(mmc), "success with phase: %d\n",
clk_get_phase(clk));
return 0;
}
static int meson_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
static int meson_mmc_resampling_tuning(struct mmc_host *mmc, u32 opcode)
{
struct meson_host *host = mmc_priv(mmc);
int adj = 0;
unsigned int val, dly, max_dly, i;
int ret;
/* enable signal resampling w/o delay */
adj = ADJUST_ADJ_EN;
writel(adj, host->regs + host->data->adjust);
/* Resampling is done using the source clock */
max_dly = DIV_ROUND_UP(clk_get_rate(host->mux_clk),
clk_get_rate(host->mmc_clk));
return meson_mmc_clk_phase_tuning(mmc, opcode, host->rx_clk);
val = readl(host->regs + host->data->adjust);
val |= ADJUST_ADJ_EN;
writel(val, host->regs + host->data->adjust);
if (mmc->doing_retune)
dly = FIELD_GET(ADJUST_ADJ_DELAY_MASK, val) + 1;
else
dly = 0;
for (i = 0; i < max_dly; i++) {
val &= ~ADJUST_ADJ_DELAY_MASK;
val |= FIELD_PREP(ADJUST_ADJ_DELAY_MASK, (dly + i) % max_dly);
writel(val, host->regs + host->data->adjust);
ret = mmc_send_tuning(mmc, opcode, NULL);
if (!ret) {
dev_dbg(mmc_dev(mmc), "resampling delay: %u\n",
(dly + i) % max_dly);
return 0;
}
}
meson_mmc_reset_resampling(host);
return -EIO;
}
static int meson_mmc_prepare_ios_clock(struct meson_host *host,
struct mmc_ios *ios)
{
bool ddr;
switch (ios->timing) {
case MMC_TIMING_MMC_DDR52:
case MMC_TIMING_UHS_DDR50:
ddr = true;
break;
default:
ddr = false;
break;
}
return meson_mmc_clk_set(host, ios->clock, ddr);
}
static void meson_mmc_check_resampling(struct meson_host *host,
struct mmc_ios *ios)
{
switch (ios->timing) {
case MMC_TIMING_LEGACY:
case MMC_TIMING_MMC_HS:
case MMC_TIMING_SD_HS:
case MMC_TIMING_MMC_DDR52:
meson_mmc_disable_resampling(host);
break;
}
}
static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
@ -775,12 +601,6 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vmmc))
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
/* disable signal resampling */
writel(0, host->regs + host->data->adjust);
/* Reset rx phase */
clk_set_phase(host->rx_clk, 0);
break;
case MMC_POWER_ON:
@ -817,20 +637,13 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
val = readl(host->regs + SD_EMMC_CFG);
val &= ~CFG_BUS_WIDTH_MASK;
val |= FIELD_PREP(CFG_BUS_WIDTH_MASK, bus_width);
writel(val, host->regs + SD_EMMC_CFG);
val &= ~CFG_DDR;
if (meson_mmc_timing_is_ddr(ios))
val |= CFG_DDR;
val &= ~CFG_CHK_DS;
if (ios->timing == MMC_TIMING_MMC_HS400)
val |= CFG_CHK_DS;
err = meson_mmc_clk_set(host, ios);
meson_mmc_check_resampling(host, ios);
err = meson_mmc_prepare_ios_clock(host, ios);
if (err)
dev_err(host->dev, "Failed to set clock: %d\n,", err);
writel(val, host->regs + SD_EMMC_CFG);
dev_dbg(host->dev, "SD_EMMC_CFG: 0x%08x\n", val);
}
@ -1081,9 +894,6 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
}
out:
/* ack all enabled interrupts */
writel(irq_en, host->regs + SD_EMMC_STATUS);
if (cmd->error) {
/* Stop desc in case of errors */
u32 start = readl(host->regs + SD_EMMC_START);
@ -1095,12 +905,14 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id)
if (ret == IRQ_HANDLED)
meson_mmc_request_done(host->mmc, cmd->mrq);
/* ack all raised interrupts */
writel(status, host->regs + SD_EMMC_STATUS);
return ret;
}
static int meson_mmc_wait_desc_stop(struct meson_host *host)
{
int loop;
u32 status;
/*
@ -1110,20 +922,10 @@ static int meson_mmc_wait_desc_stop(struct meson_host *host)
* If we don't confirm the descriptor is stopped, it might raise new
* IRQs after we have called mmc_request_done() which is bad.
*/
for (loop = 50; loop; loop--) {
status = readl(host->regs + SD_EMMC_STATUS);
if (status & (STATUS_BUSY | STATUS_DESC_BUSY))
udelay(100);
else
break;
}
if (status & (STATUS_BUSY | STATUS_DESC_BUSY)) {
dev_err(host->dev, "Timed out waiting for host to stop\n");
return -ETIMEDOUT;
}
return 0;
return readl_poll_timeout(host->regs + SD_EMMC_STATUS, status,
!(status & (STATUS_BUSY | STATUS_DESC_BUSY)),
100, 5000);
}
static irqreturn_t meson_mmc_irq_thread(int irq, void *dev_id)
@ -1227,7 +1029,7 @@ static const struct mmc_host_ops meson_mmc_ops = {
.get_cd = meson_mmc_get_cd,
.pre_req = meson_mmc_pre_req,
.post_req = meson_mmc_post_req,
.execute_tuning = meson_mmc_execute_tuning,
.execute_tuning = meson_mmc_resampling_tuning,
.card_busy = meson_mmc_card_busy,
.start_signal_voltage_switch = meson_mmc_voltage_switch,
};
@ -1338,7 +1140,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->regs + SD_EMMC_IRQ_EN);
ret = request_threaded_irq(host->irq, meson_mmc_irq,
meson_mmc_irq_thread, IRQF_SHARED,
meson_mmc_irq_thread, IRQF_ONESHOT,
dev_name(&pdev->dev), host);
if (ret)
goto err_init_clk;
@ -1349,6 +1151,13 @@ static int meson_mmc_probe(struct platform_device *pdev)
mmc->max_segs = SD_EMMC_DESC_BUF_LEN / sizeof(struct sd_emmc_desc);
mmc->max_seg_size = mmc->max_req_size;
/*
* At the moment, we don't know how to reliably enable HS400.
* From the different datasheets, it is not even clear if this mode
* is officially supported by any of the SoCs
*/
mmc->caps2 &= ~MMC_CAP2_HS400;
/* data bounce buffer */
host->bounce_buf_size = mmc->max_req_size;
host->bounce_buf =

62
drivers/mmc/host/mmc_spi.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* mmc_spi.c - Access SD/MMC cards through SPI master controllers
* Access SD/MMC cards through SPI master controllers
*
* (C) Copyright 2005, Intec Automation,
* Mike Lavender (mike@steroidmicros)
@ -8,21 +9,6 @@
* Hans-Peter Nilsson (hp@axis.com)
* (C) Copyright 2007, ATRON electronic GmbH,
* Jan Nikitenko <jan.nikitenko@gmail.com>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/sched.h>
#include <linux/delay.h>
@ -220,7 +206,7 @@ static int mmc_spi_skip(struct mmc_spi_host *host, unsigned long timeout,
* We use jiffies here because we want to have a relation
* between elapsed time and the blocking of the scheduler.
*/
if (time_is_before_jiffies(start+1))
if (time_is_before_jiffies(start + 1))
schedule();
}
return -ETIMEDOUT;
@ -467,8 +453,8 @@ mmc_spi_command_send(struct mmc_spi_host *host,
memset(cp, 0xff, sizeof(data->status));
cp[1] = 0x40 | cmd->opcode;
put_unaligned_be32(cmd->arg, cp+2);
cp[6] = crc7_be(0, cp+1, 5) | 0x01;
put_unaligned_be32(cmd->arg, cp + 2);
cp[6] = crc7_be(0, cp + 1, 5) | 0x01;
cp += 7;
/* Then, read up to 13 bytes (while writing all-ones):
@ -642,9 +628,7 @@ mmc_spi_setup_data_message(
if (multiple || direction == DMA_TO_DEVICE) {
t = &host->early_status;
memset(t, 0, sizeof(*t));
t->len = (direction == DMA_TO_DEVICE)
? sizeof(scratch->status)
: 1;
t->len = (direction == DMA_TO_DEVICE) ? sizeof(scratch->status) : 1;
t->tx_buf = host->ones;
t->tx_dma = host->ones_dma;
t->rx_buf = scratch->status;
@ -677,8 +661,7 @@ mmc_spi_writeblock(struct mmc_spi_host *host, struct spi_transfer *t,
u32 pattern;
if (host->mmc->use_spi_crc)
scratch->crc_val = cpu_to_be16(
crc_itu_t(0, t->tx_buf, t->len));
scratch->crc_val = cpu_to_be16(crc_itu_t(0, t->tx_buf, t->len));
if (host->dma_dev)
dma_sync_single_for_device(host->dma_dev,
host->data_dma, sizeof(*scratch),
@ -819,6 +802,10 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
}
status = spi_sync_locked(spi, &host->m);
if (status < 0) {
dev_dbg(&spi->dev, "read error %d\n", status);
return status;
}
if (host->dma_dev) {
dma_sync_single_for_cpu(host->dma_dev,
@ -855,8 +842,8 @@ mmc_spi_readblock(struct mmc_spi_host *host, struct spi_transfer *t,
be16_to_cpus(&scratch->crc_val);
if (scratch->crc_val != crc) {
dev_dbg(&spi->dev, "read - crc error: crc_val=0x%04x, "
"computed=0x%04x len=%d\n",
dev_dbg(&spi->dev,
"read - crc error: crc_val=0x%04x, computed=0x%04x len=%d\n",
scratch->crc_val, crc, t->len);
return -EILSEQ;
}
@ -945,9 +932,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
dev_dbg(&host->spi->dev,
" mmc_spi: %s block, %d bytes\n",
(direction == DMA_TO_DEVICE)
? "write"
: "read",
(direction == DMA_TO_DEVICE) ? "write" : "read",
t->len);
if (direction == DMA_TO_DEVICE)
@ -974,8 +959,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd,
if (status < 0) {
data->error = status;
dev_dbg(&spi->dev, "%s status %d\n",
(direction == DMA_TO_DEVICE)
? "write" : "read",
(direction == DMA_TO_DEVICE) ? "write" : "read",
status);
break;
}
@ -1249,8 +1233,7 @@ static void mmc_spi_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
mres = spi_setup(host->spi);
if (mres < 0)
dev_dbg(&host->spi->dev,
"switch back to SPI mode 3"
" failed\n");
"switch back to SPI mode 3 failed\n");
}
}
@ -1470,7 +1453,7 @@ static int mmc_spi_probe(struct spi_device *spi)
return 0;
fail_add_host:
mmc_remove_host (mmc);
mmc_remove_host(mmc);
fail_glue_init:
if (host->dma_dev)
dma_unmap_single(host->dma_dev, host->data_dma,
@ -1485,7 +1468,6 @@ static int mmc_spi_probe(struct spi_device *spi)
fail_nobuf1:
mmc_free_host(mmc);
mmc_spi_put_pdata(spi);
dev_set_drvdata(&spi->dev, NULL);
nomem:
kfree(ones);
@ -1496,10 +1478,7 @@ static int mmc_spi_probe(struct spi_device *spi)
static int mmc_spi_remove(struct spi_device *spi)
{
struct mmc_host *mmc = dev_get_drvdata(&spi->dev);
struct mmc_spi_host *host;
if (mmc) {
host = mmc_priv(mmc);
struct mmc_spi_host *host = mmc_priv(mmc);
/* prevent new mmc_detect_change() calls */
if (host->pdata && host->pdata->exit)
@ -1520,8 +1499,6 @@ static int mmc_spi_remove(struct spi_device *spi)
spi->max_speed_hz = mmc->f_max;
mmc_free_host(mmc);
mmc_spi_put_pdata(spi);
dev_set_drvdata(&spi->dev, NULL);
}
return 0;
}
@ -1542,8 +1519,7 @@ static struct spi_driver mmc_spi_driver = {
module_spi_driver(mmc_spi_driver);
MODULE_AUTHOR("Mike Lavender, David Brownell, "
"Hans-Peter Nilsson, Jan Nikitenko");
MODULE_AUTHOR("Mike Lavender, David Brownell, Hans-Peter Nilsson, Jan Nikitenko");
MODULE_DESCRIPTION("SPI SD/MMC host driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("spi:mmc_spi");

82
drivers/mmc/host/mmci.c
View File

@ -43,21 +43,11 @@
#include <asm/io.h>
#include "mmci.h"
#include "mmci_qcom_dml.h"
#define DRIVER_NAME "mmci-pl18x"
#ifdef CONFIG_DMA_ENGINE
void mmci_variant_init(struct mmci_host *host);
#else
static inline void mmci_variant_init(struct mmci_host *host) {}
#endif
#ifdef CONFIG_MMC_STM32_SDMMC
void sdmmc_variant_init(struct mmci_host *host);
#else
static inline void sdmmc_variant_init(struct mmci_host *host) {}
#endif
static void mmci_variant_init(struct mmci_host *host);
static void ux500v2_variant_init(struct mmci_host *host);
static unsigned int fmax = 515633;
@ -70,7 +60,6 @@ static struct variant_data variant_arm = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.reversed_irq_handling = true,
@ -90,7 +79,6 @@ static struct variant_data variant_arm_extended_fifo = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@ -110,7 +98,6 @@ static struct variant_data variant_arm_extended_fifo_hwfc = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 100000000,
.mmcimask1 = true,
@ -131,7 +118,6 @@ static struct variant_data variant_u300 = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 16,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.pwrreg_powerup = MCI_PWR_ON,
@ -157,7 +143,6 @@ static struct variant_data variant_nomadik = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@ -186,7 +171,6 @@ static struct variant_data variant_ux500 = {
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@ -220,11 +204,9 @@ static struct variant_data variant_ux500v2 = {
.datactrl_mask_ddrmode = MCI_DPSM_ST_DDRMODE,
.datalength_bits = 24,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
.blksz_datactrl16 = true,
.pwrreg_powerup = MCI_PWR_ON,
.f_max = 100000000,
.signal_direction = true,
@ -238,7 +220,7 @@ static struct variant_data variant_ux500v2 = {
.irq_pio_mask = MCI_IRQ_PIO_MASK,
.start_err = MCI_STARTBITERR,
.opendrain = MCI_OD,
.init = mmci_variant_init,
.init = ux500v2_variant_init,
};
static struct variant_data variant_stm32 = {
@ -255,7 +237,6 @@ static struct variant_data variant_stm32 = {
.irq_pio_mask = MCI_IRQ_PIO_MASK,
.datalength_bits = 24,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.datactrl_mask_sdio = MCI_DPSM_ST_SDIOEN,
.st_sdio = true,
.st_clkdiv = true,
@ -299,10 +280,8 @@ static struct variant_data variant_qcom = {
.cmdreg_srsp_crc = MCI_CPSM_RESPONSE,
.cmdreg_srsp = MCI_CPSM_RESPONSE,
.data_cmd_enable = MCI_CPSM_QCOM_DATCMD,
.blksz_datactrl4 = true,
.datalength_bits = 24,
.datactrl_blocksz = 11,
.datactrl_dpsm_enable = MCI_DPSM_ENABLE,
.pwrreg_powerup = MCI_PWR_UP,
.f_max = 208000000,
.explicit_mclk_control = true,
@ -624,6 +603,16 @@ static void mmci_init_sg(struct mmci_host *host, struct mmc_data *data)
sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
}
static u32 mmci_get_dctrl_cfg(struct mmci_host *host)
{
return MCI_DPSM_ENABLE | mmci_dctrl_blksz(host);
}
static u32 ux500v2_get_dctrl_cfg(struct mmci_host *host)
{
return MCI_DPSM_ENABLE | (host->data->blksz << 16);
}
/*
* All the DMA operation mode stuff goes inside this ifdef.
* This assumes that you have a generic DMA device interface,
@ -886,15 +875,11 @@ int mmci_dmae_prep_data(struct mmci_host *host,
int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl)
{
struct mmci_dmae_priv *dmae = host->dma_priv;
struct mmc_data *data = host->data;
host->dma_in_progress = true;
dmaengine_submit(dmae->desc_current);
dma_async_issue_pending(dmae->cur);
if (host->variant->qcom_dml)
dml_start_xfer(host, data);
*datactrl |= MCI_DPSM_DMAENABLE;
return 0;
@ -952,6 +937,7 @@ void mmci_dmae_unprep_data(struct mmci_host *host,
static struct mmci_host_ops mmci_variant_ops = {
.prep_data = mmci_dmae_prep_data,
.unprep_data = mmci_dmae_unprep_data,
.get_datactrl_cfg = mmci_get_dctrl_cfg,
.get_next_data = mmci_dmae_get_next_data,
.dma_setup = mmci_dmae_setup,
.dma_release = mmci_dmae_release,
@ -959,12 +945,22 @@ static struct mmci_host_ops mmci_variant_ops = {
.dma_finalize = mmci_dmae_finalize,
.dma_error = mmci_dmae_error,
};
#else
static struct mmci_host_ops mmci_variant_ops = {
.get_datactrl_cfg = mmci_get_dctrl_cfg,
};
#endif
void mmci_variant_init(struct mmci_host *host)
{
host->ops = &mmci_variant_ops;
}
#endif
void ux500v2_variant_init(struct mmci_host *host)
{
host->ops = &mmci_variant_ops;
host->ops->get_datactrl_cfg = ux500v2_get_dctrl_cfg;
}
static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq)
{
@ -1000,7 +996,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
unsigned int datactrl, timeout, irqmask;
unsigned long long clks;
void __iomem *base;
int blksz_bits;
dev_dbg(mmc_dev(host->mmc), "blksz %04x blks %04x flags %08x\n",
data->blksz, data->blocks, data->flags);
@ -1018,18 +1013,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
writel(timeout, base + MMCIDATATIMER);
writel(host->size, base + MMCIDATALENGTH);
blksz_bits = ffs(data->blksz) - 1;
BUG_ON(1 << blksz_bits != data->blksz);
if (variant->blksz_datactrl16)
datactrl = variant->datactrl_dpsm_enable | (data->blksz << 16);
else if (variant->blksz_datactrl4)
datactrl = variant->datactrl_dpsm_enable | (data->blksz << 4);
else
datactrl = variant->datactrl_dpsm_enable | blksz_bits << 4;
if (data->flags & MMC_DATA_READ)
datactrl |= MCI_DPSM_DIRECTION;
datactrl = host->ops->get_datactrl_cfg(host);
datactrl |= host->data->flags & MMC_DATA_READ ? MCI_DPSM_DIRECTION : 0;
if (host->mmc->card && mmc_card_sdio(host->mmc->card)) {
u32 clk;
@ -1220,12 +1205,13 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
unsigned int status)
{
void __iomem *base = host->base;
bool sbc;
bool sbc, busy_resp;
if (!cmd)
return;
sbc = (cmd == host->mrq->sbc);
busy_resp = !!(cmd->flags & MMC_RSP_BUSY);
/*
* We need to be one of these interrupts to be considered worth
@ -1239,8 +1225,7 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
/*
* ST Micro variant: handle busy detection.
*/
if (host->variant->busy_detect) {
bool busy_resp = !!(cmd->flags & MMC_RSP_BUSY);
if (busy_resp && host->variant->busy_detect) {
/* We are busy with a command, return */
if (host->busy_status &&
@ -1253,7 +1238,7 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
* that the special busy status bit is still set before
* proceeding.
*/
if (!host->busy_status && busy_resp &&
if (!host->busy_status &&
!(status & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT)) &&
(readl(base + MMCISTATUS) & host->variant->busy_detect_flag)) {
@ -1550,9 +1535,10 @@ static irqreturn_t mmci_irq(int irq, void *dev_id)
}
/*
* Don't poll for busy completion in irq context.
* Busy detection has been handled by mmci_cmd_irq() above.
* Clear the status bit to prevent polling in IRQ context.
*/
if (host->variant->busy_detect && host->busy_status)
if (host->variant->busy_detect_flag)
status &= ~host->variant->busy_detect_flag;
ret = 1;

32
drivers/mmc/host/mmci.h
View File

@ -131,6 +131,11 @@
/* Control register extensions in the Qualcomm versions */
#define MCI_DPSM_QCOM_DATA_PEND BIT(17)
#define MCI_DPSM_QCOM_RX_DATA_PEND BIT(20)
/* Control register extensions in STM32 versions */
#define MCI_DPSM_STM32_MODE_BLOCK (0 << 2)
#define MCI_DPSM_STM32_MODE_SDIO (1 << 2)
#define MCI_DPSM_STM32_MODE_STREAM (2 << 2)
#define MCI_DPSM_STM32_MODE_BLOCK_STOP (3 << 2)
#define MMCIDATACNT 0x030
#define MMCISTATUS 0x034
@ -275,12 +280,8 @@ struct mmci_host;
* @st_clkdiv: true if using a ST-specific clock divider algorithm
* @stm32_clkdiv: true if using a STM32-specific clock divider algorithm
* @datactrl_mask_ddrmode: ddr mode mask in datactrl register.
* @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register
* @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl
* register
* @datactrl_mask_sdio: SDIO enable mask in datactrl register
* @datactrl_blksz: block size in power of two
* @datactrl_dpsm_enable: enable value for DPSM
* @datactrl_first: true if data must be setup before send command
* @datacnt_useless: true if you could not use datacnt register to read
* remaining data
@ -325,14 +326,11 @@ struct variant_data {
unsigned int datactrl_mask_ddrmode;
unsigned int datactrl_mask_sdio;
unsigned int datactrl_blocksz;
unsigned int datactrl_dpsm_enable;
u8 datactrl_first:1;
u8 datacnt_useless:1;
u8 st_sdio:1;
u8 st_clkdiv:1;
u8 stm32_clkdiv:1;
u8 blksz_datactrl16:1;
u8 blksz_datactrl4:1;
u32 pwrreg_powerup;
u32 f_max;
u8 signal_direction:1;
@ -362,6 +360,7 @@ struct mmci_host_ops {
bool next);
void (*unprep_data)(struct mmci_host *host, struct mmc_data *data,
int err);
u32 (*get_datactrl_cfg)(struct mmci_host *host);
void (*get_next_data)(struct mmci_host *host, struct mmc_data *data);
int (*dma_setup)(struct mmci_host *host);
void (*dma_release)(struct mmci_host *host);
@ -429,6 +428,12 @@ struct mmci_host {
void mmci_write_clkreg(struct mmci_host *host, u32 clk);
void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
static inline u32 mmci_dctrl_blksz(struct mmci_host *host)
{
return (ffs(host->data->blksz) - 1) << 4;
}
#ifdef CONFIG_DMA_ENGINE
int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
bool next);
void mmci_dmae_unprep_data(struct mmci_host *host, struct mmc_data *data,
@ -439,3 +444,16 @@ void mmci_dmae_release(struct mmci_host *host);
int mmci_dmae_start(struct mmci_host *host, unsigned int *datactrl);
void mmci_dmae_finalize(struct mmci_host *host, struct mmc_data *data);
void mmci_dmae_error(struct mmci_host *host);
#endif
#ifdef CONFIG_MMC_QCOM_DML
void qcom_variant_init(struct mmci_host *host);
#else
static inline void qcom_variant_init(struct mmci_host *host) {}
#endif
#ifdef CONFIG_MMC_STM32_SDMMC
void sdmmc_variant_init(struct mmci_host *host);
#else
static inline void sdmmc_variant_init(struct mmci_host *host) {}
#endif

17
drivers/mmc/host/mmci_qcom_dml.c
View File

@ -54,10 +54,15 @@
#define DML_OFFSET 0x800
void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
static int qcom_dma_start(struct mmci_host *host, unsigned int *datactrl)
{
u32 config;
void __iomem *base = host->base + DML_OFFSET;
struct mmc_data *data = host->data;
int ret = mmci_dmae_start(host, datactrl);
if (ret)
return ret;
if (data->flags & MMC_DATA_READ) {
/* Read operation: configure DML for producer operation */
@ -96,6 +101,7 @@ void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
/* make sure the dml is configured before dma is triggered */
wmb();
return 0;
}
static int of_get_dml_pipe_index(struct device_node *np, const char *name)
@ -133,7 +139,6 @@ static int qcom_dma_setup(struct mmci_host *host)
producer_id = of_get_dml_pipe_index(np, "rx");
if (producer_id < 0 || consumer_id < 0) {
host->variant->qcom_dml = false;
mmci_dmae_release(host);
return -EINVAL;
}
@ -183,13 +188,19 @@ static int qcom_dma_setup(struct mmci_host *host)
return 0;
}
static u32 qcom_get_dctrl_cfg(struct mmci_host *host)
{
return MCI_DPSM_ENABLE | (host->data->blksz << 4);
}
static struct mmci_host_ops qcom_variant_ops = {
.prep_data = mmci_dmae_prep_data,
.unprep_data = mmci_dmae_unprep_data,
.get_datactrl_cfg = qcom_get_dctrl_cfg,
.get_next_data = mmci_dmae_get_next_data,
.dma_setup = qcom_dma_setup,
.dma_release = mmci_dmae_release,
.dma_start = mmci_dmae_start,
.dma_start = qcom_dma_start,
.dma_finalize = mmci_dmae_finalize,
.dma_error = mmci_dmae_error,
};

30
drivers/mmc/host/mmci_qcom_dml.h
View File

@ -1,30 +0,0 @@
/*
*
* Copyright (c) 2011, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef __MMC_QCOM_DML_H__
#define __MMC_QCOM_DML_H__
#ifdef CONFIG_MMC_QCOM_DML
void qcom_variant_init(struct mmci_host *host);
void dml_start_xfer(struct mmci_host *host, struct mmc_data *data);
#else
static inline void qcom_variant_init(struct mmci_host *host)
{
}
static inline void dml_start_xfer(struct mmci_host *host, struct mmc_data *data)
{
}
#endif /* CONFIG_MMC_QCOM_DML */
#endif /* __MMC_QCOM_DML_H__ */

18
drivers/mmc/host/mmci_stm32_sdmmc.c
View File

@ -265,10 +265,28 @@ static void mmci_sdmmc_set_pwrreg(struct mmci_host *host, unsigned int pwr)
}
}
static u32 sdmmc_get_dctrl_cfg(struct mmci_host *host)
{
u32 datactrl;
datactrl = mmci_dctrl_blksz(host);
if (host->mmc->card && mmc_card_sdio(host->mmc->card) &&
host->data->blocks == 1)
datactrl |= MCI_DPSM_STM32_MODE_SDIO;
else if (host->data->stop && !host->mrq->sbc)
datactrl |= MCI_DPSM_STM32_MODE_BLOCK_STOP;
else
datactrl |= MCI_DPSM_STM32_MODE_BLOCK;
return datactrl;
}
static struct mmci_host_ops sdmmc_variant_ops = {
.validate_data = sdmmc_idma_validate_data,
.prep_data = sdmmc_idma_prep_data,
.unprep_data = sdmmc_idma_unprep_data,
.get_datactrl_cfg = sdmmc_get_dctrl_cfg,
.dma_setup = sdmmc_idma_setup,
.dma_start = sdmmc_idma_start,
.dma_finalize = sdmmc_idma_finalize,

91
drivers/mmc/host/mtk-sd.c
View File

@ -300,6 +300,8 @@
#define CMD_TIMEOUT (HZ/10 * 5) /* 100ms x5 */
#define DAT_TIMEOUT (HZ * 5) /* 1000ms x5 */
#define DEFAULT_DEBOUNCE (8) /* 8 cycles CD debounce */
#define PAD_DELAY_MAX 32 /* PAD delay cells */
/*--------------------------------------------------------------------------*/
/* Descriptor Structure */
@ -372,6 +374,7 @@ struct mtk_mmc_compatible {
bool stop_clk_fix;
bool enhance_rx;
bool support_64g;
bool use_internal_cd;
};
struct msdc_tune_para {
@ -430,6 +433,7 @@ struct msdc_host {
bool hs400_cmd_resp_sel_rising;
/* cmd response sample selection for HS400 */
bool hs400_mode; /* current eMMC will run at hs400 mode */
bool internal_cd; /* Use internal card-detect logic */
struct msdc_save_para save_para; /* used when gate HCLK */
struct msdc_tune_para def_tune_para; /* default tune setting */
struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */
@ -507,6 +511,28 @@ static const struct mtk_mmc_compatible mt7622_compat = {
.support_64g = false,
};
static const struct mtk_mmc_compatible mt8516_compat = {
.clk_div_bits = 12,
.hs400_tune = false,
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
.busy_check = true,
.stop_clk_fix = true,
};
static const struct mtk_mmc_compatible mt7620_compat = {
.clk_div_bits = 8,
.hs400_tune = false,
.pad_tune_reg = MSDC_PAD_TUNE,
.async_fifo = false,
.data_tune = false,
.busy_check = false,
.stop_clk_fix = false,
.enhance_rx = false,
.use_internal_cd = true,
};
static const struct of_device_id msdc_of_ids[] = {
{ .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat},
{ .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat},
@ -514,6 +540,8 @@ static const struct of_device_id msdc_of_ids[] = {
{ .compatible = "mediatek,mt2701-mmc", .data = &mt2701_compat},
{ .compatible = "mediatek,mt2712-mmc", .data = &mt2712_compat},
{ .compatible = "mediatek,mt7622-mmc", .data = &mt7622_compat},
{ .compatible = "mediatek,mt8516-mmc", .data = &mt8516_compat},
{ .compatible = "mediatek,mt7620-mmc", .data = &mt7620_compat},
{}
};
MODULE_DEVICE_TABLE(of, msdc_of_ids);
@ -1407,6 +1435,12 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
sdio_signal_irq(host->mmc);
}
if ((events & event_mask) & MSDC_INT_CDSC) {
if (host->internal_cd)
mmc_detect_change(host->mmc, msecs_to_jiffies(20));
events &= ~MSDC_INT_CDSC;
}
if (!(events & (event_mask & ~MSDC_INT_SDIOIRQ)))
break;
@ -1440,14 +1474,24 @@ static void msdc_init_hw(struct msdc_host *host)
/* Reset */
msdc_reset_hw(host);
/* Disable card detection */
sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
/* Disable and clear all interrupts */
writel(0, host->base + MSDC_INTEN);
val = readl(host->base + MSDC_INT);
writel(val, host->base + MSDC_INT);
/* Configure card detection */
if (host->internal_cd) {
sdr_set_field(host->base + MSDC_PS, MSDC_PS_CDDEBOUNCE,
DEFAULT_DEBOUNCE);
sdr_set_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
sdr_set_bits(host->base + MSDC_INTEN, MSDC_INTEN_CDSC);
sdr_set_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
} else {
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_CDSC);
}
if (host->top_base) {
writel(0, host->top_base + EMMC_TOP_CONTROL);
writel(0, host->top_base + EMMC_TOP_CMD);
@ -1557,6 +1601,13 @@ static void msdc_init_hw(struct msdc_host *host)
static void msdc_deinit_hw(struct msdc_host *host)
{
u32 val;
if (host->internal_cd) {
/* Disabled card-detect */
sdr_clr_bits(host->base + MSDC_PS, MSDC_PS_CDEN);
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_INSWKUP);
}
/* Disable and clear all interrupts */
writel(0, host->base + MSDC_INTEN);
@ -2055,13 +2106,31 @@ static void msdc_ack_sdio_irq(struct mmc_host *mmc)
__msdc_enable_sdio_irq(mmc, 1);
}
static int msdc_get_cd(struct mmc_host *mmc)
{
struct msdc_host *host = mmc_priv(mmc);
int val;
if (mmc->caps & MMC_CAP_NONREMOVABLE)
return 1;
if (!host->internal_cd)
return mmc_gpio_get_cd(mmc);
val = readl(host->base + MSDC_PS) & MSDC_PS_CDSTS;
if (mmc->caps2 & MMC_CAP2_CD_ACTIVE_HIGH)
return !!val;
else
return !val;
}
static const struct mmc_host_ops mt_msdc_ops = {
.post_req = msdc_post_req,
.pre_req = msdc_pre_req,
.request = msdc_ops_request,
.set_ios = msdc_ops_set_ios,
.get_ro = mmc_gpio_get_ro,
.get_cd = mmc_gpio_get_cd,
.get_cd = msdc_get_cd,
.enable_sdio_irq = msdc_enable_sdio_irq,
.ack_sdio_irq = msdc_ack_sdio_irq,
.start_signal_voltage_switch = msdc_ops_switch_volt,
@ -2123,9 +2192,11 @@ static int msdc_drv_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (res) {
host->top_base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(host->top_base))
host->top_base = NULL;
}
ret = mmc_regulator_get_supply(mmc);
if (ret)
@ -2191,6 +2262,16 @@ static int msdc_drv_probe(struct platform_device *pdev)
else
mmc->f_min = DIV_ROUND_UP(host->src_clk_freq, 4 * 4095);
if (!(mmc->caps & MMC_CAP_NONREMOVABLE) &&
!mmc_can_gpio_cd(mmc) &&
host->dev_comp->use_internal_cd) {
/*
* Is removable but no GPIO declared, so
* use internal functionality.
*/
host->internal_cd = true;
}
if (mmc->caps & MMC_CAP_SDIO_IRQ)
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
@ -2227,7 +2308,7 @@ static int msdc_drv_probe(struct platform_device *pdev)
msdc_init_hw(host);
ret = devm_request_irq(&pdev->dev, host->irq, msdc_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT, pdev->name, host);
IRQF_TRIGGER_NONE, pdev->name, host);
if (ret)
goto release;

3
drivers/mmc/host/mxs-mmc.c
View File

@ -648,7 +648,8 @@ static int mxs_mmc_probe(struct platform_device *pdev)
/* set mmc core parameters */
mmc->ops = &mxs_mmc_ops;
mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23;
MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23 |
MMC_CAP_ERASE;
host->broken_cd = of_property_read_bool(np, "broken-cd");

6
drivers/mmc/host/of_mmc_spi.c
View File

@ -1,14 +1,10 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* OpenFirmware bindings for the MMC-over-SPI driver
*
* Copyright (c) MontaVista Software, Inc. 2008.
*
* Author: Anton Vorontsov <avorontsov@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/kernel.h>

4
drivers/mmc/host/omap_hsmmc.c
View File

@ -2077,7 +2077,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev)
unsigned long flags;
int ret = 0;
host = platform_get_drvdata(to_platform_device(dev));
host = dev_get_drvdata(dev);
omap_hsmmc_context_save(host);
dev_dbg(dev, "disabled\n");
@ -2118,7 +2118,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
struct omap_hsmmc_host *host;
unsigned long flags;
host = platform_get_drvdata(to_platform_device(dev));
host = dev_get_drvdata(dev);
omap_hsmmc_context_restore(host);
dev_dbg(dev, "enabled\n");

2
drivers/mmc/host/renesas_sdhi.h
View File

@ -3,7 +3,7 @@
* Renesas Mobile SDHI
*
* Copyright (C) 2017 Horms Solutions Ltd., Simon Horman
* Copyright (C) 2017 Renesas Electronics Corporation
* Copyright (C) 2017-19 Renesas Electronics Corporation
*/
#ifndef RENESAS_SDHI_H

12
drivers/mmc/host/renesas_sdhi_core.c
View File

@ -2,8 +2,8 @@
/*
* Renesas SDHI
*
* Copyright (C) 2015-17 Renesas Electronics Corporation
* Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
* Copyright (C) 2015-19 Renesas Electronics Corporation
* Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2009 Magnus Damm
*
@ -779,14 +779,14 @@ int renesas_sdhi_probe(struct platform_device *pdev,
if (ver < SDHI_VER_GEN2_SDR104 && mmc_data->max_blk_count > U16_MAX)
mmc_data->max_blk_count = U16_MAX;
ret = tmio_mmc_host_probe(host);
if (ret < 0)
goto edisclk;
/* One Gen2 SDHI incarnation does NOT have a CBSY bit */
if (ver == SDHI_VER_GEN2_SDR50)
mmc_data->flags &= ~TMIO_MMC_HAVE_CBSY;
ret = tmio_mmc_host_probe(host);
if (ret < 0)
goto edisclk;
/* Enable tuning iff we have an SCC and a supported mode */
if (of_data && of_data->scc_offset &&
(host->mmc->caps & MMC_CAP_UHS_SDR104 ||

11
drivers/mmc/host/renesas_sdhi_internal_dmac.c
View File

@ -2,8 +2,9 @@
/*
* DMA support for Internal DMAC with SDHI SD/SDIO controller
*
* Copyright (C) 2016-17 Renesas Electronics Corporation
* Copyright (C) 2016-19 Renesas Electronics Corporation
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2018-19 Sang Engineering, Wolfram Sang
*/
#include <linux/bitops.h>
@ -95,8 +96,8 @@ static const struct renesas_sdhi_of_data of_rza2_compatible = {
.scc_offset = 0 - 0x1000,
.taps = rcar_gen3_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen3_scc_taps),
/* DMAC can handle 0xffffffff blk count but only 1 segment */
.max_blk_count = 0xffffffff,
/* DMAC can handle 32bit blk count but only 1 segment */
.max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
.max_segs = 1,
};
@ -110,8 +111,8 @@ static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = {
.scc_offset = 0x1000,
.taps = rcar_gen3_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen3_scc_taps),
/* DMAC can handle 0xffffffff blk count but only 1 segment */
.max_blk_count = 0xffffffff,
/* DMAC can handle 32bit blk count but only 1 segment */
.max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
.max_segs = 1,
};

6
drivers/mmc/host/renesas_sdhi_sys_dmac.c
View File

@ -2,8 +2,8 @@
/*
* DMA support use of SYS DMAC with SDHI SD/SDIO controller
*
* Copyright (C) 2016-17 Renesas Electronics Corporation
* Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-19 Renesas Electronics Corporation
* Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2017 Horms Solutions, Simon Horman
* Copyright (C) 2010-2011 Guennadi Liakhovetski
*/
@ -65,7 +65,7 @@ static const struct renesas_sdhi_of_data of_rcar_gen2_compatible = {
.scc_offset = 0x0300,
.taps = rcar_gen2_scc_taps,
.taps_num = ARRAY_SIZE(rcar_gen2_scc_taps),
.max_blk_count = 0xffffffff,
.max_blk_count = UINT_MAX / TMIO_MAX_BLK_SIZE,
};
/* Definitions for sampling clocks */

41
drivers/mmc/host/sdhci-esdhc-imx.c
View File

@ -14,6 +14,7 @@
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pm_qos.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
@ -73,6 +74,7 @@
#define ESDHC_STROBE_DLL_CTRL_ENABLE (1 << 0)
#define ESDHC_STROBE_DLL_CTRL_RESET (1 << 1)
#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT 3
#define ESDHC_STROBE_DLL_CTRL_SLV_UPDATE_INT_DEFAULT (4 << 20)
#define ESDHC_STROBE_DLL_STATUS 0x74
#define ESDHC_STROBE_DLL_STS_REF_LOCK (1 << 1)
@ -156,6 +158,8 @@
#define ESDHC_FLAG_HS400_ES BIT(11)
/* The IP has Host Controller Interface for Command Queuing */
#define ESDHC_FLAG_CQHCI BIT(12)
/* need request pmqos during low power */
#define ESDHC_FLAG_PMQOS BIT(13)
struct esdhc_soc_data {
u32 flags;
@ -204,6 +208,12 @@ static const struct esdhc_soc_data usdhc_imx7d_data = {
| ESDHC_FLAG_HS400,
};
static struct esdhc_soc_data usdhc_imx7ulp_data = {
.flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
| ESDHC_FLAG_PMQOS | ESDHC_FLAG_HS400,
};
static struct esdhc_soc_data usdhc_imx8qxp_data = {
.flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
@ -229,6 +239,7 @@ struct pltfm_imx_data {
WAIT_FOR_INT, /* sent CMD12, waiting for response INT */
} multiblock_status;
u32 is_ddr;
struct pm_qos_request pm_qos_req;
};
static const struct platform_device_id imx_esdhc_devtype[] = {
@ -257,6 +268,7 @@ static const struct of_device_id imx_esdhc_dt_ids[] = {
{ .compatible = "fsl,imx6q-usdhc", .data = &usdhc_imx6q_data, },
{ .compatible = "fsl,imx6ull-usdhc", .data = &usdhc_imx6ull_data, },
{ .compatible = "fsl,imx7d-usdhc", .data = &usdhc_imx7d_data, },
{ .compatible = "fsl,imx7ulp-usdhc", .data = &usdhc_imx7ulp_data, },
{ .compatible = "fsl,imx8qxp-usdhc", .data = &usdhc_imx8qxp_data, },
{ /* sentinel */ }
};
@ -983,15 +995,19 @@ static void esdhc_set_strobe_dll(struct sdhci_host *host)
/* force a reset on strobe dll */
writel(ESDHC_STROBE_DLL_CTRL_RESET,
host->ioaddr + ESDHC_STROBE_DLL_CTRL);
/* clear the reset bit on strobe dll before any setting */
writel(0, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
/*
* enable strobe dll ctrl and adjust the delay target
* for the uSDHC loopback read clock
*/
v = ESDHC_STROBE_DLL_CTRL_ENABLE |
ESDHC_STROBE_DLL_CTRL_SLV_UPDATE_INT_DEFAULT |
(7 << ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
writel(v, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
/* wait 1us to make sure strobe dll status register stable */
udelay(1);
/* wait 5us to make sure strobe dll status register stable */
udelay(5);
v = readl(host->ioaddr + ESDHC_STROBE_DLL_STATUS);
if (!(v & ESDHC_STROBE_DLL_STS_REF_LOCK))
dev_warn(mmc_dev(host->mmc),
@ -1436,6 +1452,10 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
imx_data->socdata = of_id ? of_id->data : (struct esdhc_soc_data *)
pdev->id_entry->driver_data;
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_add_request(&imx_data->pm_qos_req,
PM_QOS_CPU_DMA_LATENCY, 0);
imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imx_data->clk_ipg)) {
err = PTR_ERR(imx_data->clk_ipg);
@ -1557,6 +1577,8 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
disable_per_clk:
clk_disable_unprepare(imx_data->clk_per);
free_sdhci:
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_remove_request(&imx_data->pm_qos_req);
sdhci_pltfm_free(pdev);
return err;
}
@ -1578,6 +1600,9 @@ static int sdhci_esdhc_imx_remove(struct platform_device *pdev)
clk_disable_unprepare(imx_data->clk_ipg);
clk_disable_unprepare(imx_data->clk_ahb);
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_remove_request(&imx_data->pm_qos_req);
sdhci_pltfm_free(pdev);
return 0;
@ -1649,6 +1674,9 @@ static int sdhci_esdhc_runtime_suspend(struct device *dev)
}
clk_disable_unprepare(imx_data->clk_ahb);
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_remove_request(&imx_data->pm_qos_req);
return ret;
}
@ -1659,9 +1687,13 @@ static int sdhci_esdhc_runtime_resume(struct device *dev)
struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host);
int err;
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_add_request(&imx_data->pm_qos_req,
PM_QOS_CPU_DMA_LATENCY, 0);
err = clk_prepare_enable(imx_data->clk_ahb);
if (err)
return err;
goto remove_pm_qos_request;
if (!sdhci_sdio_irq_enabled(host)) {
err = clk_prepare_enable(imx_data->clk_per);
@ -1690,6 +1722,9 @@ static int sdhci_esdhc_runtime_resume(struct device *dev)
clk_disable_unprepare(imx_data->clk_per);
disable_ahb_clk:
clk_disable_unprepare(imx_data->clk_ahb);
remove_pm_qos_request:
if (imx_data->socdata->flags & ESDHC_FLAG_PMQOS)
pm_qos_remove_request(&imx_data->pm_qos_req);
return err;
}
#endif

5
drivers/mmc/host/sdhci-of-arasan.c
View File

@ -832,7 +832,10 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
host->mmc_host_ops.start_signal_voltage_switch =
sdhci_arasan_voltage_switch;
sdhci_arasan->has_cqe = true;
host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
host->mmc->caps2 |= MMC_CAP2_CQE;
if (!of_property_read_bool(np, "disable-cqe-dcmd"))
host->mmc->caps2 |= MMC_CAP2_CQE_DCMD;
}
ret = sdhci_arasan_add_host(sdhci_arasan);

47
drivers/mmc/host/sdhci-of-esdhc.c
View File

@ -24,6 +24,7 @@
#include <linux/ktime.h>
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@ -81,6 +82,7 @@ struct sdhci_esdhc {
bool quirk_limited_clk_division;
bool quirk_unreliable_pulse_detection;
bool quirk_fixup_tuning;
bool quirk_ignore_data_inhibit;
unsigned int peripheral_clock;
const struct esdhc_clk_fixup *clk_fixup;
u32 div_ratio;
@ -147,6 +149,19 @@ static u32 esdhc_readl_fixup(struct sdhci_host *host,
return ret;
}
/*
* Some controllers have unreliable Data Line Active
* bit for commands with busy signal. This affects
* Command Inhibit (data) bit. Just ignore it since
* MMC core driver has already polled card status
* with CMD13 after any command with busy siganl.
*/
if ((spec_reg == SDHCI_PRESENT_STATE) &&
(esdhc->quirk_ignore_data_inhibit == true)) {
ret = value & ~SDHCI_DATA_INHIBIT;
return ret;
}
ret = value;
return ret;
}
@ -694,6 +709,9 @@ static void esdhc_reset(struct sdhci_host *host, u8 mask)
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc"))
mdelay(5);
if (mask & SDHCI_RESET_ALL) {
val = sdhci_readl(host, ESDHC_TBCTL);
val &= ~ESDHC_TB_EN;
@ -864,6 +882,25 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host,
sdhci_set_uhs_signaling(host, timing);
}
static u32 esdhc_irq(struct sdhci_host *host, u32 intmask)
{
u32 command;
if (of_find_compatible_node(NULL, NULL,
"fsl,p2020-esdhc")) {
command = SDHCI_GET_CMD(sdhci_readw(host,
SDHCI_COMMAND));
if (command == MMC_WRITE_MULTIPLE_BLOCK &&
sdhci_readw(host, SDHCI_BLOCK_COUNT) &&
intmask & SDHCI_INT_DATA_END) {
intmask &= ~SDHCI_INT_DATA_END;
sdhci_writel(host, SDHCI_INT_DATA_END,
SDHCI_INT_STATUS);
}
}
return intmask;
}
#ifdef CONFIG_PM_SLEEP
static u32 esdhc_proctl;
static int esdhc_of_suspend(struct device *dev)
@ -911,6 +948,7 @@ static const struct sdhci_ops sdhci_esdhc_be_ops = {
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = esdhc_reset,
.set_uhs_signaling = esdhc_set_uhs_signaling,
.irq = esdhc_irq,
};
static const struct sdhci_ops sdhci_esdhc_le_ops = {
@ -928,6 +966,7 @@ static const struct sdhci_ops sdhci_esdhc_le_ops = {
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = esdhc_reset,
.set_uhs_signaling = esdhc_set_uhs_signaling,
.irq = esdhc_irq,
};
static const struct sdhci_pltfm_data sdhci_esdhc_be_pdata = {
@ -955,6 +994,7 @@ static struct soc_device_attribute soc_incorrect_hostver[] = {
static struct soc_device_attribute soc_fixup_sdhc_clkdivs[] = {
{ .family = "QorIQ LX2160A", .revision = "1.0", },
{ .family = "QorIQ LX2160A", .revision = "2.0", },
{ },
};
@ -1074,6 +1114,11 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
if (esdhc->vendor_ver > VENDOR_V_22)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
if (of_find_compatible_node(NULL, NULL, "fsl,p2020-esdhc")) {
host->quirks2 |= SDHCI_QUIRK_RESET_AFTER_REQUEST;
host->quirks2 |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
}
if (of_device_is_compatible(np, "fsl,p5040-esdhc") ||
of_device_is_compatible(np, "fsl,p5020-esdhc") ||
of_device_is_compatible(np, "fsl,p4080-esdhc") ||
@ -1084,12 +1129,14 @@ static int sdhci_esdhc_probe(struct platform_device *pdev)
if (of_device_is_compatible(np, "fsl,ls1021a-esdhc"))
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
esdhc->quirk_ignore_data_inhibit = false;
if (of_device_is_compatible(np, "fsl,p2020-esdhc")) {
/*
* Freescale messed up with P2020 as it has a non-standard
* host control register
*/
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HOST_CONTROL;
esdhc->quirk_ignore_data_inhibit = true;
}
/* call to generic mmc_of_parse to support additional capabilities */

2
drivers/mmc/host/sdhci-omap.c
View File

@ -785,7 +785,7 @@ static void sdhci_omap_set_uhs_signaling(struct sdhci_host *host,
sdhci_omap_start_clock(omap_host);
}
void sdhci_omap_reset(struct sdhci_host *host, u8 mask)
static void sdhci_omap_reset(struct sdhci_host *host, u8 mask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_omap_host *omap_host = sdhci_pltfm_priv(pltfm_host);

98
drivers/mmc/host/sdhci-pci-core.c
View File

@ -31,6 +31,10 @@
#include <linux/mmc/sdhci-pci-data.h>
#include <linux/acpi.h>
#ifdef CONFIG_X86
#include <asm/iosf_mbi.h>
#endif
#include "cqhci.h"
#include "sdhci.h"
@ -451,6 +455,50 @@ static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
.probe_slot = pch_hc_probe_slot,
};
#ifdef CONFIG_X86
#define BYT_IOSF_SCCEP 0x63
#define BYT_IOSF_OCP_NETCTRL0 0x1078
#define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8)
static void byt_ocp_setting(struct pci_dev *pdev)
{
u32 val = 0;
if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC &&
pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO &&
pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD &&
pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2)
return;
if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
&val)) {
dev_err(&pdev->dev, "%s read error\n", __func__);
return;
}
if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE))
return;
val &= ~BYT_IOSF_OCP_TIMEOUT_BASE;
if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0,
val)) {
dev_err(&pdev->dev, "%s write error\n", __func__);
return;
}
dev_dbg(&pdev->dev, "%s completed\n", __func__);
}
#else
static inline void byt_ocp_setting(struct pci_dev *pdev)
{
}
#endif
enum {
INTEL_DSM_FNS = 0,
INTEL_DSM_V18_SWITCH = 3,
@ -715,6 +763,8 @@ static void byt_probe_slot(struct sdhci_pci_slot *slot)
byt_read_dsm(slot);
byt_ocp_setting(slot->chip->pdev);
ops->execute_tuning = intel_execute_tuning;
ops->start_signal_voltage_switch = intel_start_signal_voltage_switch;
@ -938,7 +988,35 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int byt_resume(struct sdhci_pci_chip *chip)
{
byt_ocp_setting(chip->pdev);
return sdhci_pci_resume_host(chip);
}
#endif
#ifdef CONFIG_PM
static int byt_runtime_resume(struct sdhci_pci_chip *chip)
{
byt_ocp_setting(chip->pdev);
return sdhci_pci_runtime_resume_host(chip);
}
#endif
static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
#ifdef CONFIG_PM_SLEEP
.resume = byt_resume,
#endif
#ifdef CONFIG_PM
.runtime_resume = byt_runtime_resume,
#endif
.allow_runtime_pm = true,
.probe_slot = byt_emmc_probe_slot,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
@ -972,6 +1050,12 @@ static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = {
};
static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
#ifdef CONFIG_PM_SLEEP
.resume = byt_resume,
#endif
#ifdef CONFIG_PM
.runtime_resume = byt_runtime_resume,
#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
@ -983,6 +1067,12 @@ static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = {
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
#ifdef CONFIG_PM_SLEEP
.resume = byt_resume,
#endif
#ifdef CONFIG_PM
.runtime_resume = byt_runtime_resume,
#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
@ -994,6 +1084,12 @@ static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
};
static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
#ifdef CONFIG_PM_SLEEP
.resume = byt_resume,
#endif
#ifdef CONFIG_PM
.runtime_resume = byt_runtime_resume,
#endif
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
SDHCI_QUIRK_NO_LED,
.quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
@ -1576,6 +1672,8 @@ static const struct pci_device_id pci_ids[] = {
SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd),
SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc),
SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd),
SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc),
SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd),
SDHCI_PCI_DEVICE(O2, 8120, o2),
SDHCI_PCI_DEVICE(O2, 8220, o2),
SDHCI_PCI_DEVICE(O2, 8221, o2),

2
drivers/mmc/host/sdhci-pci.h
View File

@ -50,6 +50,8 @@
#define PCI_DEVICE_ID_INTEL_CNPH_SD 0xa375
#define PCI_DEVICE_ID_INTEL_ICP_EMMC 0x34c4
#define PCI_DEVICE_ID_INTEL_ICP_SD 0x34f8
#define PCI_DEVICE_ID_INTEL_CML_EMMC 0x02c4
#define PCI_DEVICE_ID_INTEL_CML_SD 0x02f5
#define PCI_DEVICE_ID_SYSKONNECT_8000 0x8000
#define PCI_DEVICE_ID_VIA_95D0 0x95d0

360
drivers/mmc/host/sdhci-tegra.c
View File

@ -66,6 +66,22 @@
#define SDHCI_VNDR_TUN_CTRL0_0 0x1c0
#define SDHCI_VNDR_TUN_CTRL0_TUN_HW_TAP 0x20000
#define SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_MASK 0x03fc0000
#define SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_SHIFT 18
#define SDHCI_VNDR_TUN_CTRL0_MUL_M_MASK 0x00001fc0
#define SDHCI_VNDR_TUN_CTRL0_MUL_M_SHIFT 6
#define SDHCI_VNDR_TUN_CTRL0_TUN_ITER_MASK 0x000e000
#define SDHCI_VNDR_TUN_CTRL0_TUN_ITER_SHIFT 13
#define TRIES_128 2
#define TRIES_256 4
#define SDHCI_VNDR_TUN_CTRL0_TUN_WORD_SEL_MASK 0x7
#define SDHCI_TEGRA_VNDR_TUN_CTRL1_0 0x1c4
#define SDHCI_TEGRA_VNDR_TUN_STATUS0 0x1C8
#define SDHCI_TEGRA_VNDR_TUN_STATUS1 0x1CC
#define SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK 0xFF
#define SDHCI_TEGRA_VNDR_TUN_STATUS1_END_TAP_SHIFT 0x8
#define TUNING_WORD_BIT_SIZE 32
#define SDHCI_TEGRA_AUTO_CAL_CONFIG 0x1e4
#define SDHCI_AUTO_CAL_START BIT(31)
@ -90,6 +106,7 @@
#define NVQUIRK_HAS_PADCALIB BIT(6)
#define NVQUIRK_NEEDS_PAD_CONTROL BIT(7)
#define NVQUIRK_DIS_CARD_CLK_CONFIG_TAP BIT(8)
#define NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING BIT(9)
/* SDMMC CQE Base Address for Tegra Host Ver 4.1 and Higher */
#define SDHCI_TEGRA_CQE_BASE_ADDR 0xF000
@ -97,6 +114,8 @@
struct sdhci_tegra_soc_data {
const struct sdhci_pltfm_data *pdata;
u32 nvquirks;
u8 min_tap_delay;
u8 max_tap_delay;
};
/* Magic pull up and pull down pad calibration offsets */
@ -136,6 +155,8 @@ struct sdhci_tegra {
u32 default_trim;
u32 dqs_trim;
bool enable_hwcq;
unsigned long curr_clk_rate;
u8 tuned_tap_delay;
};
static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
@ -241,6 +262,7 @@ static void tegra210_sdhci_writew(struct sdhci_host *host, u16 val, int reg)
if (is_tuning_cmd) {
udelay(1);
sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
tegra_sdhci_configure_card_clk(host, clk_enabled);
}
}
@ -722,6 +744,7 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
*/
host_clk = tegra_host->ddr_signaling ? clock * 2 : clock;
clk_set_rate(pltfm_host->clk, host_clk);
tegra_host->curr_clk_rate = host_clk;
if (tegra_host->ddr_signaling)
host->max_clk = host_clk;
else
@ -770,6 +793,159 @@ static void tegra_sdhci_hs400_dll_cal(struct sdhci_host *host)
"HS400 delay line calibration timed out\n");
}
static void tegra_sdhci_tap_correction(struct sdhci_host *host, u8 thd_up,
u8 thd_low, u8 fixed_tap)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
u32 val, tun_status;
u8 word, bit, edge1, tap, window;
bool tap_result;
bool start_fail = false;
bool start_pass = false;
bool end_pass = false;
bool first_fail = false;
bool first_pass = false;
u8 start_pass_tap = 0;
u8 end_pass_tap = 0;
u8 first_fail_tap = 0;
u8 first_pass_tap = 0;
u8 total_tuning_words = host->tuning_loop_count / TUNING_WORD_BIT_SIZE;
/*
* Read auto-tuned results and extract good valid passing window by
* filtering out un-wanted bubble/partial/merged windows.
*/
for (word = 0; word < total_tuning_words; word++) {
val = sdhci_readl(host, SDHCI_VNDR_TUN_CTRL0_0);
val &= ~SDHCI_VNDR_TUN_CTRL0_TUN_WORD_SEL_MASK;
val |= word;
sdhci_writel(host, val, SDHCI_VNDR_TUN_CTRL0_0);
tun_status = sdhci_readl(host, SDHCI_TEGRA_VNDR_TUN_STATUS0);
bit = 0;
while (bit < TUNING_WORD_BIT_SIZE) {
tap = word * TUNING_WORD_BIT_SIZE + bit;
tap_result = tun_status & (1 << bit);
if (!tap_result && !start_fail) {
start_fail = true;
if (!first_fail) {
first_fail_tap = tap;
first_fail = true;
}
} else if (tap_result && start_fail && !start_pass) {
start_pass_tap = tap;
start_pass = true;
if (!first_pass) {
first_pass_tap = tap;
first_pass = true;
}
} else if (!tap_result && start_fail && start_pass &&
!end_pass) {
end_pass_tap = tap - 1;
end_pass = true;
} else if (tap_result && start_pass && start_fail &&
end_pass) {
window = end_pass_tap - start_pass_tap;
/* discard merged window and bubble window */
if (window >= thd_up || window < thd_low) {
start_pass_tap = tap;
end_pass = false;
} else {
/* set tap at middle of valid window */
tap = start_pass_tap + window / 2;
tegra_host->tuned_tap_delay = tap;
return;
}
}
bit++;
}
}
if (!first_fail) {
WARN_ON("no edge detected, continue with hw tuned delay.\n");
} else if (first_pass) {
/* set tap location at fixed tap relative to the first edge */
edge1 = first_fail_tap + (first_pass_tap - first_fail_tap) / 2;
if (edge1 - 1 > fixed_tap)
tegra_host->tuned_tap_delay = edge1 - fixed_tap;
else
tegra_host->tuned_tap_delay = edge1 + fixed_tap;
}
}
static void tegra_sdhci_post_tuning(struct sdhci_host *host)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
u32 avg_tap_dly, val, min_tap_dly, max_tap_dly;
u8 fixed_tap, start_tap, end_tap, window_width;
u8 thdupper, thdlower;
u8 num_iter;
u32 clk_rate_mhz, period_ps, bestcase, worstcase;
/* retain HW tuned tap to use incase if no correction is needed */
val = sdhci_readl(host, SDHCI_TEGRA_VENDOR_CLOCK_CTRL);
tegra_host->tuned_tap_delay = (val & SDHCI_CLOCK_CTRL_TAP_MASK) >>
SDHCI_CLOCK_CTRL_TAP_SHIFT;
if (soc_data->min_tap_delay && soc_data->max_tap_delay) {
min_tap_dly = soc_data->min_tap_delay;
max_tap_dly = soc_data->max_tap_delay;
clk_rate_mhz = tegra_host->curr_clk_rate / USEC_PER_SEC;
period_ps = USEC_PER_SEC / clk_rate_mhz;
bestcase = period_ps / min_tap_dly;
worstcase = period_ps / max_tap_dly;
/*
* Upper and Lower bound thresholds used to detect merged and
* bubble windows
*/
thdupper = (2 * worstcase + bestcase) / 2;
thdlower = worstcase / 4;
/*
* fixed tap is used when HW tuning result contains single edge
* and tap is set at fixed tap delay relative to the first edge
*/
avg_tap_dly = (period_ps * 2) / (min_tap_dly + max_tap_dly);
fixed_tap = avg_tap_dly / 2;
val = sdhci_readl(host, SDHCI_TEGRA_VNDR_TUN_STATUS1);
start_tap = val & SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK;
end_tap = (val >> SDHCI_TEGRA_VNDR_TUN_STATUS1_END_TAP_SHIFT) &
SDHCI_TEGRA_VNDR_TUN_STATUS1_TAP_MASK;
window_width = end_tap - start_tap;
num_iter = host->tuning_loop_count;
/*
* partial window includes edges of the tuning range.
* merged window includes more taps so window width is higher
* than upper threshold.
*/
if (start_tap == 0 || (end_tap == (num_iter - 1)) ||
(end_tap == num_iter - 2) || window_width >= thdupper) {
pr_debug("%s: Apply tuning correction\n",
mmc_hostname(host->mmc));
tegra_sdhci_tap_correction(host, thdupper, thdlower,
fixed_tap);
}
}
tegra_sdhci_set_tap(host, tegra_host->tuned_tap_delay);
}
static int tegra_sdhci_execute_hw_tuning(struct mmc_host *mmc, u32 opcode)
{
struct sdhci_host *host = mmc_priv(mmc);
int err;
err = sdhci_execute_tuning(mmc, opcode);
if (!err && !host->tuning_err)
tegra_sdhci_post_tuning(host);
return err;
}
static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
unsigned timing)
{
@ -778,16 +954,22 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
bool set_default_tap = false;
bool set_dqs_trim = false;
bool do_hs400_dll_cal = false;
u8 iter = TRIES_256;
u32 val;
tegra_host->ddr_signaling = false;
switch (timing) {
case MMC_TIMING_UHS_SDR50:
break;
case MMC_TIMING_UHS_SDR104:
case MMC_TIMING_MMC_HS200:
/* Don't set default tap on tunable modes. */
iter = TRIES_128;
break;
case MMC_TIMING_MMC_HS400:
set_dqs_trim = true;
do_hs400_dll_cal = true;
iter = TRIES_128;
break;
case MMC_TIMING_MMC_DDR52:
case MMC_TIMING_UHS_DDR50:
@ -799,11 +981,25 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
break;
}
val = sdhci_readl(host, SDHCI_VNDR_TUN_CTRL0_0);
val &= ~(SDHCI_VNDR_TUN_CTRL0_TUN_ITER_MASK |
SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_MASK |
SDHCI_VNDR_TUN_CTRL0_MUL_M_MASK);
val |= (iter << SDHCI_VNDR_TUN_CTRL0_TUN_ITER_SHIFT |
0 << SDHCI_VNDR_TUN_CTRL0_START_TAP_VAL_SHIFT |
1 << SDHCI_VNDR_TUN_CTRL0_MUL_M_SHIFT);
sdhci_writel(host, val, SDHCI_VNDR_TUN_CTRL0_0);
sdhci_writel(host, 0, SDHCI_TEGRA_VNDR_TUN_CTRL1_0);
host->tuning_loop_count = (iter == TRIES_128) ? 128 : 256;
sdhci_set_uhs_signaling(host, timing);
tegra_sdhci_pad_autocalib(host);
if (set_default_tap)
if (tegra_host->tuned_tap_delay && !set_default_tap)
tegra_sdhci_set_tap(host, tegra_host->tuned_tap_delay);
else
tegra_sdhci_set_tap(host, tegra_host->default_tap);
if (set_dqs_trim)
@ -928,23 +1124,86 @@ static void tegra_sdhci_voltage_switch(struct sdhci_host *host)
tegra_host->pad_calib_required = true;
}
static void tegra_cqhci_writel(struct cqhci_host *cq_host, u32 val, int reg)
{
struct mmc_host *mmc = cq_host->mmc;
u8 ctrl;
ktime_t timeout;
bool timed_out;
/*
* During CQE resume/unhalt, CQHCI driver unhalts CQE prior to
* cqhci_host_ops enable where SDHCI DMA and BLOCK_SIZE registers need
* to be re-configured.
* Tegra CQHCI/SDHCI prevents write access to block size register when
* CQE is unhalted. So handling CQE resume sequence here to configure
* SDHCI block registers prior to exiting CQE halt state.
*/
if (reg == CQHCI_CTL && !(val & CQHCI_HALT) &&
cqhci_readl(cq_host, CQHCI_CTL) & CQHCI_HALT) {
sdhci_cqe_enable(mmc);
writel(val, cq_host->mmio + reg);
timeout = ktime_add_us(ktime_get(), 50);
while (1) {
timed_out = ktime_compare(ktime_get(), timeout) > 0;
ctrl = cqhci_readl(cq_host, CQHCI_CTL);
if (!(ctrl & CQHCI_HALT) || timed_out)
break;
}
/*
* CQE usually resumes very quick, but incase if Tegra CQE
* doesn't resume retry unhalt.
*/
if (timed_out)
writel(val, cq_host->mmio + reg);
} else {
writel(val, cq_host->mmio + reg);
}
}
static void sdhci_tegra_update_dcmd_desc(struct mmc_host *mmc,
struct mmc_request *mrq, u64 *data)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(mmc_priv(mmc));
struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
if (soc_data->nvquirks & NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING &&
mrq->cmd->flags & MMC_RSP_R1B)
*data |= CQHCI_CMD_TIMING(1);
}
static void sdhci_tegra_cqe_enable(struct mmc_host *mmc)
{
struct cqhci_host *cq_host = mmc->cqe_private;
u32 cqcfg = 0;
u32 val;
/*
* Tegra SDMMC Controller design prevents write access to BLOCK_COUNT
* registers when CQE is enabled.
* Tegra CQHCI/SDMMC design prevents write access to sdhci block size
* register when CQE is enabled and unhalted.
* CQHCI driver enables CQE prior to activation, so disable CQE before
* programming block size in sdhci controller and enable it back.
*/
cqcfg = cqhci_readl(cq_host, CQHCI_CFG);
if (cqcfg & CQHCI_ENABLE)
cqhci_writel(cq_host, (cqcfg & ~CQHCI_ENABLE), CQHCI_CFG);
if (!cq_host->activated) {
val = cqhci_readl(cq_host, CQHCI_CFG);
if (val & CQHCI_ENABLE)
cqhci_writel(cq_host, (val & ~CQHCI_ENABLE),
CQHCI_CFG);
sdhci_cqe_enable(mmc);
if (val & CQHCI_ENABLE)
cqhci_writel(cq_host, val, CQHCI_CFG);
}
if (cqcfg & CQHCI_ENABLE)
cqhci_writel(cq_host, cqcfg, CQHCI_CFG);
/*
* CMD CRC errors are seen sometimes with some eMMC devices when status
* command is sent during transfer of last data block which is the
* default case as send status command block counter (CBC) is 1.
* Recommended fix to set CBC to 0 allowing send status command only
* when data lines are idle.
*/
val = cqhci_readl(cq_host, CQHCI_SSC1);
val &= ~CQHCI_SSC1_CBC_MASK;
cqhci_writel(cq_host, val, CQHCI_SSC1);
}
static void sdhci_tegra_dumpregs(struct mmc_host *mmc)
@ -966,9 +1225,11 @@ static u32 sdhci_tegra_cqhci_irq(struct sdhci_host *host, u32 intmask)
}
static const struct cqhci_host_ops sdhci_tegra_cqhci_ops = {
.write_l = tegra_cqhci_writel,
.enable = sdhci_tegra_cqe_enable,
.disable = sdhci_cqe_disable,
.dumpregs = sdhci_tegra_dumpregs,
.update_dcmd_desc = sdhci_tegra_update_dcmd_desc,
};
static const struct sdhci_ops tegra_sdhci_ops = {
@ -1109,6 +1370,8 @@ static const struct sdhci_tegra_soc_data soc_data_tegra210 = {
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104,
.min_tap_delay = 106,
.max_tap_delay = 185,
};
static const struct sdhci_ops tegra186_sdhci_ops = {
@ -1143,15 +1406,30 @@ static const struct sdhci_pltfm_data sdhci_tegra186_pdata = {
};
static const struct sdhci_tegra_soc_data soc_data_tegra186 = {
.pdata = &sdhci_tegra186_pdata,
.nvquirks = NVQUIRK_NEEDS_PAD_CONTROL |
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104 |
NVQUIRK_CQHCI_DCMD_R1B_CMD_TIMING,
.min_tap_delay = 84,
.max_tap_delay = 136,
};
static const struct sdhci_tegra_soc_data soc_data_tegra194 = {
.pdata = &sdhci_tegra186_pdata,
.nvquirks = NVQUIRK_NEEDS_PAD_CONTROL |
NVQUIRK_HAS_PADCALIB |
NVQUIRK_DIS_CARD_CLK_CONFIG_TAP |
NVQUIRK_ENABLE_SDR50 |
NVQUIRK_ENABLE_SDR104,
.min_tap_delay = 96,
.max_tap_delay = 139,
};
static const struct of_device_id sdhci_tegra_dt_match[] = {
{ .compatible = "nvidia,tegra194-sdhci", .data = &soc_data_tegra194 },
{ .compatible = "nvidia,tegra186-sdhci", .data = &soc_data_tegra186 },
{ .compatible = "nvidia,tegra210-sdhci", .data = &soc_data_tegra210 },
{ .compatible = "nvidia,tegra124-sdhci", .data = &soc_data_tegra124 },
@ -1250,6 +1528,10 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
host->mmc_host_ops.hs400_enhanced_strobe =
tegra_sdhci_hs400_enhanced_strobe;
if (!host->ops->platform_execute_tuning)
host->mmc_host_ops.execute_tuning =
tegra_sdhci_execute_hw_tuning;
rc = mmc_of_parse(host->mmc);
if (rc)
goto err_parse_dt;
@ -1329,11 +1611,67 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int __maybe_unused sdhci_tegra_suspend(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
int ret;
if (host->mmc->caps2 & MMC_CAP2_CQE) {
ret = cqhci_suspend(host->mmc);
if (ret)
return ret;
}
ret = sdhci_suspend_host(host);
if (ret) {
cqhci_resume(host->mmc);
return ret;
}
clk_disable_unprepare(pltfm_host->clk);
return 0;
}
static int __maybe_unused sdhci_tegra_resume(struct device *dev)
{
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
int ret;
ret = clk_prepare_enable(pltfm_host->clk);
if (ret)
return ret;
ret = sdhci_resume_host(host);
if (ret)
goto disable_clk;
if (host->mmc->caps2 & MMC_CAP2_CQE) {
ret = cqhci_resume(host->mmc);
if (ret)
goto suspend_host;
}
return 0;
suspend_host:
sdhci_suspend_host(host);
disable_clk:
clk_disable_unprepare(pltfm_host->clk);
return ret;
}
#endif
static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend,
sdhci_tegra_resume);
static struct platform_driver sdhci_tegra_driver = {
.driver = {
.name = "sdhci-tegra",
.of_match_table = sdhci_tegra_dt_match,
.pm = &sdhci_pltfm_pmops,
.pm = &sdhci_tegra_dev_pm_ops,
},
.probe = sdhci_tegra_probe,
.remove = sdhci_tegra_remove,

164
drivers/mmc/host/sdhci.c
View File

@ -446,6 +446,28 @@ static inline void sdhci_led_deactivate(struct sdhci_host *host)
#endif
static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq,
unsigned long timeout)
{
if (sdhci_data_line_cmd(mrq->cmd))
mod_timer(&host->data_timer, timeout);
else
mod_timer(&host->timer, timeout);
}
static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *mrq)
{
if (sdhci_data_line_cmd(mrq->cmd))
del_timer(&host->data_timer);
else
del_timer(&host->timer);
}
static inline bool sdhci_has_requests(struct sdhci_host *host)
{
return host->cmd || host->data_cmd;
}
/*****************************************************************************\
* *
* Core functions *
@ -1221,6 +1243,18 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
int i;
if (host->cmd && host->cmd->mrq == mrq)
host->cmd = NULL;
if (host->data_cmd && host->data_cmd->mrq == mrq)
host->data_cmd = NULL;
if (host->data && host->data->mrq == mrq)
host->data = NULL;
if (sdhci_needs_reset(host, mrq))
host->pending_reset = true;
for (i = 0; i < SDHCI_MAX_MRQS; i++) {
if (host->mrqs_done[i] == mrq) {
WARN_ON(1);
@ -1237,24 +1271,17 @@ static void __sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
WARN_ON(i >= SDHCI_MAX_MRQS);
tasklet_schedule(&host->finish_tasklet);
sdhci_del_timer(host, mrq);
if (!sdhci_has_requests(host))
sdhci_led_deactivate(host);
}
static void sdhci_finish_mrq(struct sdhci_host *host, struct mmc_request *mrq)
{
if (host->cmd && host->cmd->mrq == mrq)
host->cmd = NULL;
if (host->data_cmd && host->data_cmd->mrq == mrq)
host->data_cmd = NULL;
if (host->data && host->data->mrq == mrq)
host->data = NULL;
if (sdhci_needs_reset(host, mrq))
host->pending_reset = true;
__sdhci_finish_mrq(host, mrq);
queue_work(host->complete_wq, &host->complete_work);
}
static void sdhci_finish_data(struct sdhci_host *host)
@ -1305,34 +1332,17 @@ static void sdhci_finish_data(struct sdhci_host *host)
* responsibility to send the stop command if required.
*/
if (data->mrq->cap_cmd_during_tfr) {
sdhci_finish_mrq(host, data->mrq);
__sdhci_finish_mrq(host, data->mrq);
} else {
/* Avoid triggering warning in sdhci_send_command() */
host->cmd = NULL;
sdhci_send_command(host, data->stop);
}
} else {
sdhci_finish_mrq(host, data->mrq);
__sdhci_finish_mrq(host, data->mrq);
}
}
static void sdhci_mod_timer(struct sdhci_host *host, struct mmc_request *mrq,
unsigned long timeout)
{
if (sdhci_data_line_cmd(mrq->cmd))
mod_timer(&host->data_timer, timeout);
else
mod_timer(&host->timer, timeout);
}
static void sdhci_del_timer(struct sdhci_host *host, struct mmc_request *mrq)
{
if (sdhci_data_line_cmd(mrq->cmd))
del_timer(&host->data_timer);
else
del_timer(&host->timer);
}
void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
{
int flags;
@ -1492,7 +1502,7 @@ static void sdhci_finish_command(struct sdhci_host *host)
sdhci_finish_data(host);
if (!cmd->data)
sdhci_finish_mrq(host, cmd->mrq);
__sdhci_finish_mrq(host, cmd->mrq);
}
}
@ -2364,9 +2374,9 @@ static int __sdhci_execute_tuning(struct sdhci_host *host, u32 opcode)
/*
* Issue opcode repeatedly till Execute Tuning is set to 0 or the number
* of loops reaches 40 times.
* of loops reaches tuning loop count.
*/
for (i = 0; i < MAX_TUNING_LOOP; i++) {
for (i = 0; i < host->tuning_loop_count; i++) {
u16 ctrl;
sdhci_send_tuning(host, opcode);
@ -2523,11 +2533,6 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq)
sdhci_pre_dma_transfer(host, mrq->data, COOKIE_PRE_MAPPED);
}
static inline bool sdhci_has_requests(struct sdhci_host *host)
{
return host->cmd || host->data_cmd;
}
static void sdhci_error_out_mrqs(struct sdhci_host *host, int err)
{
if (host->data_cmd) {
@ -2589,7 +2594,7 @@ static const struct mmc_host_ops sdhci_ops = {
/*****************************************************************************\
* *
* Tasklets *
* Request done *
* *
\*****************************************************************************/
@ -2612,8 +2617,6 @@ static bool sdhci_request_done(struct sdhci_host *host)
return true;
}
sdhci_del_timer(host, mrq);
/*
* Always unmap the data buffers if they were mapped by
* sdhci_prepare_data() whenever we finish with a request.
@ -2695,9 +2698,6 @@ static bool sdhci_request_done(struct sdhci_host *host)
host->pending_reset = false;
}
if (!sdhci_has_requests(host))
sdhci_led_deactivate(host);
host->mrqs_done[i] = NULL;
spin_unlock_irqrestore(&host->lock, flags);
@ -2707,9 +2707,10 @@ static bool sdhci_request_done(struct sdhci_host *host)
return false;
}
static void sdhci_tasklet_finish(unsigned long param)
static void sdhci_complete_work(struct work_struct *work)
{
struct sdhci_host *host = (struct sdhci_host *)param;
struct sdhci_host *host = container_of(work, struct sdhci_host,
complete_work);
while (!sdhci_request_done(host))
;
@ -2754,6 +2755,7 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
if (host->data) {
host->data->error = -ETIMEDOUT;
sdhci_finish_data(host);
queue_work(host->complete_wq, &host->complete_work);
} else if (host->data_cmd) {
host->data_cmd->error = -ETIMEDOUT;
sdhci_finish_mrq(host, host->data_cmd->mrq);
@ -2819,7 +2821,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
return;
}
sdhci_finish_mrq(host, host->cmd->mrq);
__sdhci_finish_mrq(host, host->cmd->mrq);
return;
}
@ -2833,7 +2835,7 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask, u32 *intmask_p)
if (mrq->sbc && (host->flags & SDHCI_AUTO_CMD23)) {
mrq->sbc->error = err;
sdhci_finish_mrq(host, mrq);
__sdhci_finish_mrq(host, mrq);
return;
}
}
@ -2897,7 +2899,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (intmask & SDHCI_INT_DATA_TIMEOUT) {
host->data_cmd = NULL;
data_cmd->error = -ETIMEDOUT;
sdhci_finish_mrq(host, data_cmd->mrq);
__sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
if (intmask & SDHCI_INT_DATA_END) {
@ -2910,7 +2912,7 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
if (host->cmd == data_cmd)
return;
sdhci_finish_mrq(host, data_cmd->mrq);
__sdhci_finish_mrq(host, data_cmd->mrq);
return;
}
}
@ -2993,12 +2995,24 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
}
}
static inline bool sdhci_defer_done(struct sdhci_host *host,
struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
return host->pending_reset ||
((host->flags & SDHCI_REQ_USE_DMA) && data &&
data->host_cookie == COOKIE_MAPPED);
}
static irqreturn_t sdhci_irq(int irq, void *dev_id)
{
struct mmc_request *mrqs_done[SDHCI_MAX_MRQS] = {0};
irqreturn_t result = IRQ_NONE;
struct sdhci_host *host = dev_id;
u32 intmask, mask, unexpected = 0;
int max_loops = 16;
int i;
spin_lock(&host->lock);
@ -3092,9 +3106,30 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id)
intmask = sdhci_readl(host, SDHCI_INT_STATUS);
} while (intmask && --max_loops);
/* Determine if mrqs can be completed immediately */
for (i = 0; i < SDHCI_MAX_MRQS; i++) {
struct mmc_request *mrq = host->mrqs_done[i];
if (!mrq)
continue;
if (sdhci_defer_done(host, mrq)) {
result = IRQ_WAKE_THREAD;
} else {
mrqs_done[i] = mrq;
host->mrqs_done[i] = NULL;
}
}
out:
spin_unlock(&host->lock);
/* Process mrqs ready for immediate completion */
for (i = 0; i < SDHCI_MAX_MRQS; i++) {
if (mrqs_done[i])
mmc_request_done(host->mmc, mrqs_done[i]);
}
if (unexpected) {
pr_err("%s: Unexpected interrupt 0x%08x.\n",
mmc_hostname(host->mmc), unexpected);
@ -3110,6 +3145,9 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
unsigned long flags;
u32 isr;
while (!sdhci_request_done(host))
;
spin_lock_irqsave(&host->lock, flags);
isr = host->thread_isr;
host->thread_isr = 0;
@ -3131,7 +3169,7 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
spin_unlock_irqrestore(&host->lock, flags);
}
return isr ? IRQ_HANDLED : IRQ_NONE;
return IRQ_HANDLED;
}
/*****************************************************************************\
@ -3483,6 +3521,7 @@ struct sdhci_host *sdhci_alloc_host(struct device *dev,
host->cqe_err_ier = SDHCI_CQE_INT_ERR_MASK;
host->tuning_delay = -1;
host->tuning_loop_count = MAX_TUNING_LOOP;
host->sdma_boundary = SDHCI_DEFAULT_BOUNDARY_ARG;
@ -4213,14 +4252,15 @@ EXPORT_SYMBOL_GPL(sdhci_cleanup_host);
int __sdhci_add_host(struct sdhci_host *host)
{
unsigned int flags = WQ_UNBOUND | WQ_MEM_RECLAIM | WQ_HIGHPRI;
struct mmc_host *mmc = host->mmc;
int ret;
/*
* Init tasklets.
*/
tasklet_init(&host->finish_tasklet,
sdhci_tasklet_finish, (unsigned long)host);
host->complete_wq = alloc_workqueue("sdhci", flags, 0);
if (!host->complete_wq)
return -ENOMEM;
INIT_WORK(&host->complete_work, sdhci_complete_work);
timer_setup(&host->timer, sdhci_timeout_timer, 0);
timer_setup(&host->data_timer, sdhci_timeout_data_timer, 0);
@ -4234,7 +4274,7 @@ int __sdhci_add_host(struct sdhci_host *host)
if (ret) {
pr_err("%s: Failed to request IRQ %d: %d\n",
mmc_hostname(mmc), host->irq, ret);
goto untasklet;
goto unwq;
}
ret = sdhci_led_register(host);
@ -4265,8 +4305,8 @@ int __sdhci_add_host(struct sdhci_host *host)
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
free_irq(host->irq, host);
untasklet:
tasklet_kill(&host->finish_tasklet);
unwq:
destroy_workqueue(host->complete_wq);
return ret;
}
@ -4328,7 +4368,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
del_timer_sync(&host->timer);
del_timer_sync(&host->data_timer);
tasklet_kill(&host->finish_tasklet);
destroy_workqueue(host->complete_wq);
if (!IS_ERR(mmc->supply.vqmmc))
regulator_disable(mmc->supply.vqmmc);

4
drivers/mmc/host/sdhci.h
View File

@ -560,7 +560,8 @@ struct sdhci_host {
unsigned int desc_sz; /* ADMA descriptor size */
struct tasklet_struct finish_tasklet; /* Tasklet structures */
struct workqueue_struct *complete_wq; /* Request completion wq */
struct work_struct complete_work; /* Request completion work */
struct timer_list timer; /* Timer for timeouts */
struct timer_list data_timer; /* Timer for data timeouts */
@ -596,6 +597,7 @@ struct sdhci_host {
#define SDHCI_TUNING_MODE_3 2
/* Delay (ms) between tuning commands */
int tuning_delay;
int tuning_loop_count;
/* Host SDMA buffer boundary. */
u32 sdma_boundary;

22
drivers/mmc/host/sdhci_am654.c
View File

@ -158,6 +158,27 @@ static void sdhci_am654_set_power(struct sdhci_host *host, unsigned char mode,
sdhci_set_power_noreg(host, mode, vdd);
}
static void sdhci_am654_write_b(struct sdhci_host *host, u8 val, int reg)
{
unsigned char timing = host->mmc->ios.timing;
if (reg == SDHCI_HOST_CONTROL) {
switch (timing) {
/*
* According to the data manual, HISPD bit
* should not be set in these speed modes.
*/
case MMC_TIMING_SD_HS:
case MMC_TIMING_MMC_HS:
case MMC_TIMING_UHS_SDR12:
case MMC_TIMING_UHS_SDR25:
val &= ~SDHCI_CTRL_HISPD;
}
}
writeb(val, host->ioaddr + reg);
}
static struct sdhci_ops sdhci_am654_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_pltfm_clk_get_max_clock,
@ -165,6 +186,7 @@ static struct sdhci_ops sdhci_am654_ops = {
.set_bus_width = sdhci_set_bus_width,
.set_power = sdhci_am654_set_power,
.set_clock = sdhci_am654_set_clock,
.write_b = sdhci_am654_write_b,
.reset = sdhci_reset,
};

6
drivers/mmc/host/tmio_mmc.h
View File

@ -4,8 +4,8 @@
*
* TC6393XB TC6391XB TC6387XB T7L66XB ASIC3
*
* Copyright (C) 2015-17 Renesas Electronics Corporation
* Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
* Copyright (C) 2015-19 Renesas Electronics Corporation
* Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2016-17 Horms Solutions, Simon Horman
* Copyright (C) 2007 Ian Molton
* Copyright (C) 2004 Ian Molton
@ -105,6 +105,8 @@
TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
#define TMIO_MAX_BLK_SIZE 512
struct tmio_mmc_data;
struct tmio_mmc_host;

6
drivers/mmc/host/tmio_mmc_core.c
View File

@ -4,8 +4,8 @@
*
* TC6393XB, TC6391XB, TC6387XB, T7L66XB, ASIC3, SH-Mobile SoCs
*
* Copyright (C) 2015-17 Renesas Electronics Corporation
* Copyright (C) 2016-17 Sang Engineering, Wolfram Sang
* Copyright (C) 2015-19 Renesas Electronics Corporation
* Copyright (C) 2016-19 Sang Engineering, Wolfram Sang
* Copyright (C) 2017 Horms Solutions, Simon Horman
* Copyright (C) 2011 Guennadi Liakhovetski
* Copyright (C) 2007 Ian Molton
@ -1186,7 +1186,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host)
mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
mmc->caps2 |= pdata->capabilities2;
mmc->max_segs = pdata->max_segs ? : 32;
mmc->max_blk_size = 512;
mmc->max_blk_size = TMIO_MAX_BLK_SIZE;
mmc->max_blk_count = pdata->max_blk_count ? :
(PAGE_SIZE / mmc->max_blk_size) * mmc->max_segs;
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;

9
drivers/mmc/host/usdhi6rol0.c
View File

@ -1339,7 +1339,7 @@ static int usdhi6_stop_cmd(struct usdhi6_host *host)
host->wait = USDHI6_WAIT_FOR_STOP;
return 0;
}
/* Unsupported STOP command */
/* fall through - Unsupported STOP command. */
default:
dev_err(mmc_dev(host->mmc),
"unsupported stop CMD%d for CMD%d\n",
@ -1687,7 +1687,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
switch (host->wait) {
default:
dev_err(mmc_dev(host->mmc), "Invalid state %u\n", host->wait);
/* mrq can be NULL in this actually impossible case */
/* fall through - mrq can be NULL, but is impossible. */
case USDHI6_WAIT_FOR_CMD:
usdhi6_error_code(host);
if (mrq)
@ -1709,10 +1709,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
host->offset, data->blocks, data->blksz, data->sg_len,
sg_dma_len(sg), sg->offset);
usdhi6_sg_unmap(host, true);
/*
* If USDHI6_WAIT_FOR_DATA_END times out, we have already unmapped
* the page
*/
/* fall through - page unmapped in USDHI6_WAIT_FOR_DATA_END. */
case USDHI6_WAIT_FOR_DATA_END:
usdhi6_error_code(host);
data->error = -ETIMEDOUT;

2
include/linux/alcor_pci.h
View File

@ -23,7 +23,7 @@
#define AU6601_BASE_CLOCK 31000000
#define AU6601_MIN_CLOCK 150000
#define AU6601_MAX_CLOCK 208000000
#define AU6601_MAX_DMA_SEGMENTS 1
#define AU6601_MAX_DMA_SEGMENTS 64
#define AU6601_MAX_PIO_SEGMENTS 1
#define AU6601_MAX_DMA_BLOCK_SIZE 0x1000
#define AU6601_MAX_PIO_BLOCK_SIZE 0x200