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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /drivers/mmc/host/dw_mmc.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/mmc/host/dw_mmc.c')
-rw-r--r--drivers/mmc/host/dw_mmc.c63
1 files changed, 24 insertions, 39 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 5f5adafb2..40e9d8e45 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1236,11 +1236,15 @@ static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
+ const struct dw_mci_drv_data *drv_data = host->drv_data;
u32 uhs;
u32 v18 = SDMMC_UHS_18V << slot->id;
int min_uv, max_uv;
int ret;
+ if (drv_data && drv_data->switch_voltage)
+ return drv_data->switch_voltage(mmc, ios);
+
/*
* Program the voltage. Note that some instances of dw_mmc may use
* the UHS_REG for this. For other instances (like exynos) the UHS_REG
@@ -1278,10 +1282,7 @@ static int dw_mci_get_ro(struct mmc_host *mmc)
int gpio_ro = mmc_gpio_get_ro(mmc);
/* Use platform get_ro function, else try on board write protect */
- if ((slot->quirks & DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT) ||
- (slot->host->quirks & DW_MCI_QUIRK_NO_WRITE_PROTECT))
- read_only = 0;
- else if (!IS_ERR_VALUE(gpio_ro))
+ if (!IS_ERR_VALUE(gpio_ro))
read_only = gpio_ro;
else
read_only =
@@ -2280,9 +2281,10 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
}
#ifdef CONFIG_OF
-/* given a slot id, find out the device node representing that slot */
-static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot)
+/* given a slot, find out the device node representing that slot */
+static struct device_node *dw_mci_of_find_slot_node(struct dw_mci_slot *slot)
{
+ struct device *dev = slot->mmc->parent;
struct device_node *np;
const __be32 *addr;
int len;
@@ -2294,42 +2296,28 @@ static struct device_node *dw_mci_of_find_slot_node(struct device *dev, u8 slot)
addr = of_get_property(np, "reg", &len);
if (!addr || (len < sizeof(int)))
continue;
- if (be32_to_cpup(addr) == slot)
+ if (be32_to_cpup(addr) == slot->id)
return np;
}
return NULL;
}
-static struct dw_mci_of_slot_quirks {
- char *quirk;
- int id;
-} of_slot_quirks[] = {
- {
- .quirk = "disable-wp",
- .id = DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT,
- },
-};
-
-static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot)
+static void dw_mci_slot_of_parse(struct dw_mci_slot *slot)
{
- struct device_node *np = dw_mci_of_find_slot_node(dev, slot);
- int quirks = 0;
- int idx;
+ struct device_node *np = dw_mci_of_find_slot_node(slot);
- /* get quirks */
- for (idx = 0; idx < ARRAY_SIZE(of_slot_quirks); idx++)
- if (of_get_property(np, of_slot_quirks[idx].quirk, NULL)) {
- dev_warn(dev, "Slot quirk %s is deprecated\n",
- of_slot_quirks[idx].quirk);
- quirks |= of_slot_quirks[idx].id;
- }
+ if (!np)
+ return;
- return quirks;
+ if (of_property_read_bool(np, "disable-wp")) {
+ slot->mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
+ dev_warn(slot->mmc->parent,
+ "Slot quirk 'disable-wp' is deprecated\n");
+ }
}
#else /* CONFIG_OF */
-static int dw_mci_of_get_slot_quirks(struct device *dev, u8 slot)
+static void dw_mci_slot_of_parse(struct dw_mci_slot *slot)
{
- return 0;
}
#endif /* CONFIG_OF */
@@ -2352,8 +2340,6 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
slot->host = host;
host->slot[id] = slot;
- slot->quirks = dw_mci_of_get_slot_quirks(host->dev, slot->id);
-
mmc->ops = &dw_mci_ops;
if (of_property_read_u32_array(host->dev->of_node,
"clock-freq-min-max", freq, 2)) {
@@ -2391,6 +2377,8 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
if (host->pdata->caps2)
mmc->caps2 = host->pdata->caps2;
+ dw_mci_slot_of_parse(slot);
+
ret = mmc_of_parse(mmc);
if (ret)
goto err_host_allocated;
@@ -2618,9 +2606,6 @@ static struct dw_mci_of_quirks {
{
.quirk = "broken-cd",
.id = DW_MCI_QUIRK_BROKEN_CARD_DETECTION,
- }, {
- .quirk = "disable-wp",
- .id = DW_MCI_QUIRK_NO_WRITE_PROTECT,
},
};
@@ -2941,15 +2926,15 @@ void dw_mci_remove(struct dw_mci *host)
{
int i;
- mci_writel(host, RINTSTS, 0xFFFFFFFF);
- mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
-
for (i = 0; i < host->num_slots; i++) {
dev_dbg(host->dev, "remove slot %d\n", i);
if (host->slot[i])
dw_mci_cleanup_slot(host->slot[i], i);
}
+ mci_writel(host, RINTSTS, 0xFFFFFFFF);
+ mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */
+
/* disable clock to CIU */
mci_writel(host, CLKENA, 0);
mci_writel(host, CLKSRC, 0);