mmc: pwrseq: sd8787: add support for wilc1000

Add new compatible for wilc1000 devices and specify the delay in .data
member of struct of_device_id. WILC1000, WILC3000 devices needs a minimum
of 5ms delay b/w reset and power lines.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20210820092803.78523-3-claudiu.beznea@microchip.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/pwrseq_sd8787.c b/drivers/mmc/core/pwrseq_sd8787.c
index 68a826f1c0a10fccb6c97ecfce2e184b02798f2e..264e48067af2066ec75609d63da0d961dae85f48 100644 (file)
--- a/drivers/mmc/core/pwrseq_sd8787.c
+++ b/drivers/mmc/core/pwrseq_sd8787.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/err.h>
@@ -27,6 +28,7 @@ struct mmc_pwrseq_sd8787 {
        struct mmc_pwrseq pwrseq;
        struct gpio_desc *reset_gpio;
        struct gpio_desc *pwrdn_gpio;
+       u32 reset_pwrdwn_delay_ms;
 };
 
 #define to_pwrseq_sd8787(p) container_of(p, struct mmc_pwrseq_sd8787, pwrseq)
@@ -37,7 +39,7 @@ static void mmc_pwrseq_sd8787_pre_power_on(struct mmc_host *host)
 
        gpiod_set_value_cansleep(pwrseq->reset_gpio, 1);
 
-       msleep(300);
+       msleep(pwrseq->reset_pwrdwn_delay_ms);
        gpiod_set_value_cansleep(pwrseq->pwrdn_gpio, 1);
 }
 
@@ -55,7 +57,8 @@ static const struct mmc_pwrseq_ops mmc_pwrseq_sd8787_ops = {
 };
 
 static const struct of_device_id mmc_pwrseq_sd8787_of_match[] = {
-       { .compatible = "mmc-pwrseq-sd8787",},
+       { .compatible = "mmc-pwrseq-sd8787", .data = (void *)300 },
+       { .compatible = "mmc-pwrseq-wilc1000", .data = (void *)5 },
        {/* sentinel */},
 };
 MODULE_DEVICE_TABLE(of, mmc_pwrseq_sd8787_of_match);
@@ -64,11 +67,15 @@ static int mmc_pwrseq_sd8787_probe(struct platform_device *pdev)
 {
        struct mmc_pwrseq_sd8787 *pwrseq;
        struct device *dev = &pdev->dev;
+       const struct of_device_id *match;
 
        pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);
        if (!pwrseq)
                return -ENOMEM;
 
+       match = of_match_node(mmc_pwrseq_sd8787_of_match, pdev->dev.of_node);
+       pwrseq->reset_pwrdwn_delay_ms = (u32)match->data;
+
        pwrseq->pwrdn_gpio = devm_gpiod_get(dev, "powerdown", GPIOD_OUT_LOW);
        if (IS_ERR(pwrseq->pwrdn_gpio))
                return PTR_ERR(pwrseq->pwrdn_gpio);