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path: root/drivers/mmc/host/sdhci-tegra.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-tegra.c')
-rw-r--r--drivers/mmc/host/sdhci-tegra.c100
1 files changed, 87 insertions, 13 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index cb348569454b..53b26502f6e2 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -19,6 +19,7 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/gpio.h>
#include <linux/mmc/card.h>
@@ -31,6 +32,19 @@
#include "sdhci-pltfm.h"
+#define NVQUIRK_FORCE_SDHCI_SPEC_200 BIT(0)
+#define NVQUIRK_ENABLE_BLOCK_GAP_DET BIT(1)
+
+struct sdhci_tegra_soc_data {
+ struct sdhci_pltfm_data *pdata;
+ u32 nvquirks;
+};
+
+struct sdhci_tegra {
+ const struct tegra_sdhci_platform_data *plat;
+ const struct sdhci_tegra_soc_data *soc_data;
+};
+
static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
{
u32 val;
@@ -46,7 +60,12 @@ static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg)
static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
{
- if (unlikely(reg == SDHCI_HOST_VERSION)) {
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_tegra *tegra_host = pltfm_host->priv;
+ const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+
+ if (unlikely((soc_data->nvquirks & NVQUIRK_FORCE_SDHCI_SPEC_200) &&
+ (reg == SDHCI_HOST_VERSION))) {
/* Erratum: Version register is invalid in HW. */
return SDHCI_SPEC_200;
}
@@ -56,6 +75,10 @@ static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg)
static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_tegra *tegra_host = pltfm_host->priv;
+ const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
+
/* Seems like we're getting spurious timeout and crc errors, so
* disable signalling of them. In case of real errors software
* timers should take care of eventually detecting them.
@@ -65,7 +88,8 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
writel(val, host->ioaddr + reg);
- if (unlikely(reg == SDHCI_INT_ENABLE)) {
+ if (unlikely((soc_data->nvquirks & NVQUIRK_ENABLE_BLOCK_GAP_DET) &&
+ (reg == SDHCI_INT_ENABLE))) {
/* Erratum: Must enable block gap interrupt detection */
u8 gap_ctrl = readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL);
if (val & SDHCI_INT_CARD_INT)
@@ -76,10 +100,11 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg)
}
}
-static unsigned int tegra_sdhci_get_ro(struct sdhci_host *sdhci)
+static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host)
{
- struct sdhci_pltfm_host *pltfm_host = sdhci_priv(sdhci);
- struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_tegra *tegra_host = pltfm_host->priv;
+ const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
if (!gpio_is_valid(plat->wp_gpio))
return -1;
@@ -98,7 +123,8 @@ static irqreturn_t carddetect_irq(int irq, void *data)
static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+ struct sdhci_tegra *tegra_host = pltfm_host->priv;
+ const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
u32 ctrl;
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
@@ -124,16 +150,44 @@ static struct sdhci_ops tegra_sdhci_ops = {
.platform_8bit_width = tegra_sdhci_8bit,
};
-static struct sdhci_pltfm_data sdhci_tegra_pdata = {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+static struct sdhci_pltfm_data sdhci_tegra20_pdata = {
+ .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+ SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_NO_HISPD_BIT |
+ SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
+ .ops = &tegra_sdhci_ops,
+};
+
+static struct sdhci_tegra_soc_data soc_data_tegra20 = {
+ .pdata = &sdhci_tegra20_pdata,
+ .nvquirks = NVQUIRK_FORCE_SDHCI_SPEC_200 |
+ NVQUIRK_ENABLE_BLOCK_GAP_DET,
+};
+#endif
+
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+static struct sdhci_pltfm_data sdhci_tegra30_pdata = {
.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+ SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_SINGLE_POWER_WRITE |
SDHCI_QUIRK_NO_HISPD_BIT |
SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC,
.ops = &tegra_sdhci_ops,
};
+static struct sdhci_tegra_soc_data soc_data_tegra30 = {
+ .pdata = &sdhci_tegra30_pdata,
+};
+#endif
+
static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = {
- { .compatible = "nvidia,tegra20-sdhci", },
+#ifdef CONFIG_ARCH_TEGRA_3x_SOC
+ { .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 },
+#endif
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+ { .compatible = "nvidia,tegra20-sdhci", .data = &soc_data_tegra20 },
+#endif
{}
};
MODULE_DEVICE_TABLE(of, sdhci_dt_ids);
@@ -164,13 +218,22 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
{
+ const struct of_device_id *match;
+ const struct sdhci_tegra_soc_data *soc_data;
+ struct sdhci_host *host;
struct sdhci_pltfm_host *pltfm_host;
struct tegra_sdhci_platform_data *plat;
- struct sdhci_host *host;
+ struct sdhci_tegra *tegra_host;
struct clk *clk;
int rc;
- host = sdhci_pltfm_init(pdev, &sdhci_tegra_pdata);
+ match = of_match_device(sdhci_tegra_dt_match, &pdev->dev);
+ if (match)
+ soc_data = match->data;
+ else
+ soc_data = &soc_data_tegra20;
+
+ host = sdhci_pltfm_init(pdev, soc_data->pdata);
if (IS_ERR(host))
return PTR_ERR(host);
@@ -187,7 +250,17 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev)
goto err_no_plat;
}
- pltfm_host->priv = plat;
+ tegra_host = devm_kzalloc(&pdev->dev, sizeof(*tegra_host), GFP_KERNEL);
+ if (!tegra_host) {
+ dev_err(mmc_dev(host->mmc), "failed to allocate tegra_host\n");
+ rc = -ENOMEM;
+ goto err_no_plat;
+ }
+
+ tegra_host->plat = plat;
+ tegra_host->soc_data = soc_data;
+
+ pltfm_host->priv = tegra_host;
if (gpio_is_valid(plat->power_gpio)) {
rc = gpio_request(plat->power_gpio, "sdhci_power");
@@ -283,7 +356,8 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
- struct tegra_sdhci_platform_data *plat = pltfm_host->priv;
+ struct sdhci_tegra *tegra_host = pltfm_host->priv;
+ const struct tegra_sdhci_platform_data *plat = tegra_host->plat;
int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
sdhci_remove_host(host, dead);
@@ -326,5 +400,5 @@ static struct platform_driver sdhci_tegra_driver = {
module_platform_driver(sdhci_tegra_driver);
MODULE_DESCRIPTION("SDHCI driver for Tegra");
-MODULE_AUTHOR(" Google, Inc.");
+MODULE_AUTHOR("Google, Inc.");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-15 21:40:21 +0300