Updating the sdhci-tegra driver to use mmc_of_parse to support standard
MMC DT bindings. Then we can remove the redundant code that already support
in generic MMC core.
Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx>
---
drivers/mmc/host/sdhci-tegra.c | 85 ++++--------------------------------------
1 file changed, 7 insertions(+), 78 deletions(-)
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 08b06e9..4f6b5c4 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -24,6 +24,7 @@
#include <linux/gpio.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
+#include <linux/mmc/slot-gpio.h>
#include <asm/gpio.h>
@@ -44,10 +45,7 @@ struct sdhci_tegra_soc_data {
struct sdhci_tegra {
const struct sdhci_tegra_soc_data *soc_data;
- int cd_gpio;
- int wp_gpio;
int power_gpio;
- int is_8bit;
};
static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
@@ -107,23 +105,9 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host)
{
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- struct sdhci_tegra *tegra_host = pltfm_host->priv;
-
- if (!gpio_is_valid(tegra_host->wp_gpio))
- return -1;
-
- return gpio_get_value(tegra_host->wp_gpio);
+ return mmc_gpio_get_ro(host->mmc);
}
-static irqreturn_t carddetect_irq(int irq, void *data)
-{
- struct sdhci_host *sdhost = (struct sdhci_host *)data;
-
- tasklet_schedule(&sdhost->card_tasklet);
- return IRQ_HANDLED;
-};
-
static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
@@ -145,12 +129,11 @@ static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
{
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- struct sdhci_tegra *tegra_host = pltfm_host->priv;
u32 ctrl;
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
- if (tegra_host->is_8bit && bus_width == MMC_BUS_WIDTH_8) {
+ if (host->mmc->caps == MMC_CAP_8_BIT_DATA &&
+ bus_width == MMC_BUS_WIDTH_8) {
ctrl &= ~SDHCI_CTRL_4BITBUS;
ctrl |= SDHCI_CTRL_8BITBUS;
} else {
@@ -220,15 +203,12 @@ static void sdhci_tegra_parse_dt(struct device *dev,
struct sdhci_tegra *tegra_host)
{
struct device_node *np = dev->of_node;
- u32 bus_width;
+ struct sdhci_host *host;
- tegra_host->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
- tegra_host->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
tegra_host->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
- if (of_property_read_u32(np, "bus-width", &bus_width) == 0 &&
- bus_width == 8)
- tegra_host->is_8bit = 1;
+ host = platform_get_drvdata(to_platform_device(dev));
+ mmc_of_parse(host->mmc);
}
static int sdhci_tegra_probe(struct platform_device *pdev)
@@ -272,37 +252,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
gpio_direction_output(tegra_host->power_gpio, 1);
}
- if (gpio_is_valid(tegra_host->cd_gpio)) {
- rc = gpio_request(tegra_host->cd_gpio, "sdhci_cd");
- if (rc) {
- dev_err(mmc_dev(host->mmc),
- "failed to allocate cd gpio\n");
- goto err_cd_req;
- }
- gpio_direction_input(tegra_host->cd_gpio);
-
- rc = request_irq(gpio_to_irq(tegra_host->cd_gpio),
- carddetect_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- mmc_hostname(host->mmc), host);
-
- if (rc) {
- dev_err(mmc_dev(host->mmc), "request irq error\n");
- goto err_cd_irq_req;
- }
-
- }
-
- if (gpio_is_valid(tegra_host->wp_gpio)) {
- rc = gpio_request(tegra_host->wp_gpio, "sdhci_wp");
- if (rc) {
- dev_err(mmc_dev(host->mmc),
- "failed to allocate wp gpio\n");
- goto err_wp_req;
- }
- gpio_direction_input(tegra_host->wp_gpio);
- }
-
clk = clk_get(mmc_dev(host->mmc), NULL);
if (IS_ERR(clk)) {
dev_err(mmc_dev(host->mmc), "clk err\n");
@@ -312,9 +261,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev)
clk_prepare_enable(clk);
pltfm_host->clk = clk;
- if (tegra_host->is_8bit)
- host->mmc->caps |= MMC_CAP_8_BIT_DATA;
-
rc = sdhci_add_host(host);
if (rc)
goto err_add_host;
@@ -325,15 +271,6 @@ err_add_host:
clk_disable_unprepare(pltfm_host->clk);
clk_put(pltfm_host->clk);
err_clk_get:
- if (gpio_is_valid(tegra_host->wp_gpio))
- gpio_free(tegra_host->wp_gpio);
-err_wp_req:
- if (gpio_is_valid(tegra_host->cd_gpio))
- free_irq(gpio_to_irq(tegra_host->cd_gpio), host);
-err_cd_irq_req:
- if (gpio_is_valid(tegra_host->cd_gpio))
- gpio_free(tegra_host->cd_gpio);
-err_cd_req:
if (gpio_is_valid(tegra_host->power_gpio))
gpio_free(tegra_host->power_gpio);
err_power_req:
@@ -351,14 +288,6 @@ static int sdhci_tegra_remove(struct platform_device *pdev)
sdhci_remove_host(host, dead);
- if (gpio_is_valid(tegra_host->wp_gpio))
- gpio_free(tegra_host->wp_gpio);
-
- if (gpio_is_valid(tegra_host->cd_gpio)) {
- free_irq(gpio_to_irq(tegra_host->cd_gpio), host);
- gpio_free(tegra_host->cd_gpio);
- }
-
if (gpio_is_valid(tegra_host->power_gpio))
gpio_free(tegra_host->power_gpio);
--
1.8.1.1
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