AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

mmc: renesas_sdhi: move wrong 'hw_reset' to 'reset'

Browse Source 
This driver got the usage of 'hw_reset' wrong and missed that it is used
to reset the remote HW (card) only, not the local one (controller). Move
everything to the proper 'reset' callback. Also, add the generic reset
code from TMIO, so we will ensure the same behaviour (it will get
refactored away in a later patch). This also means we need to drop
MMC_CAP_HW_RESET because this is currently not supported by our
hardware.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20200820132538.24758-2-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2020-08-20 15:25:33 +02:00 committed by Ulf Hansson
parent 7ca0f166f5
commit 6e7d4de108
1 changed files with 13 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/mmc/host/renesas_sdhi_core.c
View File

@ -631,11 +631,20 @@ static bool renesas_sdhi_check_scc_error(struct tmio_mmc_host *host)
return renesas_sdhi_manual_correction(host, use_4tap);
}
static void renesas_sdhi_hw_reset(struct tmio_mmc_host *host)
static void renesas_sdhi_reset(struct tmio_mmc_host *host)
{
struct renesas_sdhi *priv;
struct renesas_sdhi *priv = host_to_priv(host);
priv = host_to_priv(host);
/* FIXME - should we set stop clock reg here */
sd_ctrl_write16(host, CTL_RESET_SD, 0x0000);
usleep_range(10000, 11000);
sd_ctrl_write16(host, CTL_RESET_SD, 0x0001);
usleep_range(10000, 11000);
if (host->pdata->flags & TMIO_MMC_SDIO_IRQ) {
sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask);
sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001);
}
renesas_sdhi_reset_scc(host, priv);
renesas_sdhi_reset_hs400_mode(host, priv);
@ -862,11 +871,9 @@ int renesas_sdhi_probe(struct platform_device *pdev,
renesas_sdhi_start_signal_voltage_switch;
host->sdcard_irq_setbit_mask = TMIO_STAT_ALWAYS_SET_27;
/* SDR and HS200/400 registers requires HW reset */
if (of_data && of_data->scc_offset) {
priv->scc_ctl = host->ctl + of_data->scc_offset;
host->mmc->caps |= MMC_CAP_HW_RESET;
host->hw_reset = renesas_sdhi_hw_reset;
host->reset = renesas_sdhi_reset;
}
}