forked from luck/tmp_suning_uos_patched
mmc: omap_hsmmc: use slot-gpio library for gpio support.
Using the common code removes some code duplication, and makes it easier to switch to using mmc_of_parse() which will remove more duplication. This uses the new mmc_gpio_request_cd_isr to provide a non-standard interrupt service routine for card-detect interrupts. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
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c7ea834d81
commit
41afa31419
@ -36,6 +36,7 @@
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#include <linux/mmc/host.h>
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#include <linux/mmc/core.h>
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#include <linux/mmc/mmc.h>
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#include <linux/mmc/slot-gpio.h>
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/gpio.h>
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@ -251,28 +252,22 @@ static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host);
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static int omap_hsmmc_card_detect(struct device *dev)
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{
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struct omap_hsmmc_host *host = dev_get_drvdata(dev);
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struct omap_hsmmc_platform_data *mmc = host->pdata;
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/* NOTE: assumes card detect signal is active-low */
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return !gpio_get_value_cansleep(mmc->switch_pin);
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return mmc_gpio_get_cd(host->mmc);
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}
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static int omap_hsmmc_get_wp(struct device *dev)
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{
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struct omap_hsmmc_host *host = dev_get_drvdata(dev);
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struct omap_hsmmc_platform_data *mmc = host->pdata;
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/* NOTE: assumes write protect signal is active-high */
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return gpio_get_value_cansleep(mmc->gpio_wp);
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return mmc_gpio_get_ro(host->mmc);
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}
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static int omap_hsmmc_get_cover_state(struct device *dev)
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{
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struct omap_hsmmc_host *host = dev_get_drvdata(dev);
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struct omap_hsmmc_platform_data *mmc = host->pdata;
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/* NOTE: assumes card detect signal is active-low */
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return !gpio_get_value_cansleep(mmc->switch_pin);
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return mmc_gpio_get_cd(host->mmc);
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}
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#ifdef CONFIG_REGULATOR
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@ -439,7 +434,10 @@ static inline int omap_hsmmc_have_reg(void)
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#endif
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static int omap_hsmmc_gpio_init(struct omap_hsmmc_host *host,
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static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id);
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static int omap_hsmmc_gpio_init(struct mmc_host *mmc,
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struct omap_hsmmc_host *host,
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struct omap_hsmmc_platform_data *pdata)
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{
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int ret;
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@ -452,46 +450,24 @@ static int omap_hsmmc_gpio_init(struct omap_hsmmc_host *host,
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host->card_detect = omap_hsmmc_card_detect;
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host->card_detect_irq =
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gpio_to_irq(pdata->switch_pin);
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ret = gpio_request(pdata->switch_pin, "mmc_cd");
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mmc_gpio_set_cd_isr(mmc, omap_hsmmc_detect);
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ret = mmc_gpio_request_cd(mmc, pdata->switch_pin, 0);
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if (ret)
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return ret;
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ret = gpio_direction_input(pdata->switch_pin);
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if (ret)
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goto err_free_sp;
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} else {
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pdata->switch_pin = -EINVAL;
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}
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if (gpio_is_valid(pdata->gpio_wp)) {
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host->get_ro = omap_hsmmc_get_wp;
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ret = gpio_request(pdata->gpio_wp, "mmc_wp");
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ret = mmc_gpio_request_ro(mmc, pdata->gpio_wp);
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if (ret)
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goto err_free_cd;
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ret = gpio_direction_input(pdata->gpio_wp);
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if (ret)
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goto err_free_wp;
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return ret;
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} else {
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pdata->gpio_wp = -EINVAL;
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}
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return 0;
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err_free_wp:
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gpio_free(pdata->gpio_wp);
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err_free_cd:
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if (gpio_is_valid(pdata->switch_pin))
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err_free_sp:
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gpio_free(pdata->switch_pin);
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return ret;
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}
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static void omap_hsmmc_gpio_free(struct omap_hsmmc_host *host,
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struct omap_hsmmc_platform_data *pdata)
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{
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if (gpio_is_valid(pdata->gpio_wp))
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gpio_free(pdata->gpio_wp);
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if (gpio_is_valid(pdata->switch_pin))
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gpio_free(pdata->switch_pin);
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}
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/*
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@ -2066,7 +2042,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
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host->next_data.cookie = 1;
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host->pbias_enabled = 0;
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ret = omap_hsmmc_gpio_init(host, pdata);
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ret = omap_hsmmc_gpio_init(mmc, host, pdata);
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if (ret)
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goto err_gpio;
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@ -2197,20 +2173,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
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mmc->ocr_avail = mmc_pdata(host)->ocr_mask;
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/* Request IRQ for card detect */
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if (host->card_detect_irq) {
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ret = devm_request_threaded_irq(&pdev->dev,
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host->card_detect_irq,
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NULL, omap_hsmmc_detect,
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
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mmc_hostname(mmc), host);
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if (ret) {
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dev_err(mmc_dev(host->mmc),
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"Unable to grab MMC CD IRQ\n");
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goto err_irq_cd;
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}
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}
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omap_hsmmc_disable_irq(host);
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/*
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@ -2249,7 +2211,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
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err_slot_name:
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mmc_remove_host(mmc);
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err_irq_cd:
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if (host->use_reg)
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omap_hsmmc_reg_put(host);
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err_irq:
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@ -2262,7 +2223,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
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if (host->dbclk)
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clk_disable_unprepare(host->dbclk);
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err1:
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omap_hsmmc_gpio_free(host, pdata);
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err_gpio:
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mmc_free_host(mmc);
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err:
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@ -2288,7 +2248,6 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
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if (host->dbclk)
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clk_disable_unprepare(host->dbclk);
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omap_hsmmc_gpio_free(host, host->pdata);
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mmc_free_host(host->mmc);
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return 0;
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