mmc: dw_mmc: remove the loop about finding slots
dwmmc controller has used the only one slot. It doesn't need to check the other slots. Remove the loop about finding slots. Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
parent
d30a8f7bdf
commit
58870241a6
|
@ -2563,26 +2563,21 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
|
|||
|
||||
static void dw_mci_handle_cd(struct dw_mci *host)
|
||||
{
|
||||
int i;
|
||||
int i = 0;
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
for (i = 0; i < host->num_slots; i++) {
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
if (!slot)
|
||||
continue;
|
||||
|
||||
if (slot->mmc->ops->card_event)
|
||||
slot->mmc->ops->card_event(slot->mmc);
|
||||
mmc_detect_change(slot->mmc,
|
||||
msecs_to_jiffies(host->pdata->detect_delay_ms));
|
||||
}
|
||||
if (slot->mmc->ops->card_event)
|
||||
slot->mmc->ops->card_event(slot->mmc);
|
||||
mmc_detect_change(slot->mmc,
|
||||
msecs_to_jiffies(host->pdata->detect_delay_ms));
|
||||
}
|
||||
|
||||
static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
struct dw_mci *host = dev_id;
|
||||
u32 pending;
|
||||
int i;
|
||||
int i = 0;
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
pending = mci_readl(host, MINTSTS); /* read-only mask reg */
|
||||
|
||||
|
@ -2659,19 +2654,11 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
|
|||
dw_mci_handle_cd(host);
|
||||
}
|
||||
|
||||
/* Handle SDIO Interrupts */
|
||||
for (i = 0; i < host->num_slots; i++) {
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
if (!slot)
|
||||
continue;
|
||||
|
||||
if (pending & SDMMC_INT_SDIO(slot->sdio_id)) {
|
||||
mci_writel(host, RINTSTS,
|
||||
SDMMC_INT_SDIO(slot->sdio_id));
|
||||
__dw_mci_enable_sdio_irq(slot, 0);
|
||||
sdio_signal_irq(slot->mmc);
|
||||
}
|
||||
if (pending & SDMMC_INT_SDIO(slot->sdio_id)) {
|
||||
mci_writel(host, RINTSTS,
|
||||
SDMMC_INT_SDIO(slot->sdio_id));
|
||||
__dw_mci_enable_sdio_irq(slot, 0);
|
||||
sdio_signal_irq(slot->mmc);
|
||||
}
|
||||
|
||||
}
|
||||
|
@ -3011,29 +2998,24 @@ static void dw_mci_enable_cd(struct dw_mci *host)
|
|||
{
|
||||
unsigned long irqflags;
|
||||
u32 temp;
|
||||
int i;
|
||||
int i = 0;
|
||||
struct dw_mci_slot *slot;
|
||||
|
||||
/*
|
||||
* No need for CD if all slots have a non-error GPIO
|
||||
* as well as broken card detection is found.
|
||||
*/
|
||||
for (i = 0; i < host->num_slots; i++) {
|
||||
slot = host->slot[i];
|
||||
if (slot->mmc->caps & MMC_CAP_NEEDS_POLL)
|
||||
return;
|
||||
|
||||
if (mmc_gpio_get_cd(slot->mmc) < 0)
|
||||
break;
|
||||
}
|
||||
if (i == host->num_slots)
|
||||
slot = host->slot[i];
|
||||
if (slot->mmc->caps & MMC_CAP_NEEDS_POLL)
|
||||
return;
|
||||
|
||||
spin_lock_irqsave(&host->irq_lock, irqflags);
|
||||
temp = mci_readl(host, INTMASK);
|
||||
temp |= SDMMC_INT_CD;
|
||||
mci_writel(host, INTMASK, temp);
|
||||
spin_unlock_irqrestore(&host->irq_lock, irqflags);
|
||||
if (mmc_gpio_get_cd(slot->mmc) < 0) {
|
||||
spin_lock_irqsave(&host->irq_lock, irqflags);
|
||||
temp = mci_readl(host, INTMASK);
|
||||
temp |= SDMMC_INT_CD;
|
||||
mci_writel(host, INTMASK, temp);
|
||||
spin_unlock_irqrestore(&host->irq_lock, irqflags);
|
||||
}
|
||||
}
|
||||
|
||||
int dw_mci_probe(struct dw_mci *host)
|
||||
|
@ -3041,7 +3023,6 @@ int dw_mci_probe(struct dw_mci *host)
|
|||
const struct dw_mci_drv_data *drv_data = host->drv_data;
|
||||
int width, i, ret = 0;
|
||||
u32 fifo_size;
|
||||
int init_slots = 0;
|
||||
|
||||
if (!host->pdata) {
|
||||
host->pdata = dw_mci_parse_dt(host);
|
||||
|
@ -3204,13 +3185,6 @@ int dw_mci_probe(struct dw_mci *host)
|
|||
if (ret)
|
||||
goto err_dmaunmap;
|
||||
|
||||
/*
|
||||
* Even though dwmmc IP is provided the multiple slots,
|
||||
* there is no use case in mmc subsystem.
|
||||
* dwmmc host controller needs to initialize the one slot per an IP.
|
||||
*/
|
||||
host->num_slots = 1;
|
||||
|
||||
/*
|
||||
* Enable interrupts for command done, data over, data empty,
|
||||
* receive ready and error such as transmit, receive timeout, crc error
|
||||
|
@ -3226,20 +3200,9 @@ int dw_mci_probe(struct dw_mci *host)
|
|||
host->irq, width, fifo_size);
|
||||
|
||||
/* We need at least one slot to succeed */
|
||||
for (i = 0; i < host->num_slots; i++) {
|
||||
ret = dw_mci_init_slot(host, i);
|
||||
if (ret)
|
||||
dev_dbg(host->dev, "slot %d init failed\n", i);
|
||||
else
|
||||
init_slots++;
|
||||
}
|
||||
|
||||
if (init_slots) {
|
||||
dev_info(host->dev, "%d slots initialized\n", init_slots);
|
||||
} else {
|
||||
dev_dbg(host->dev,
|
||||
"attempted to initialize %d slots, but failed on all\n",
|
||||
host->num_slots);
|
||||
ret = dw_mci_init_slot(host, 0);
|
||||
if (ret) {
|
||||
dev_dbg(host->dev, "slot %d init failed\n", i);
|
||||
goto err_dmaunmap;
|
||||
}
|
||||
|
||||
|
@ -3267,13 +3230,11 @@ EXPORT_SYMBOL(dw_mci_probe);
|
|||
|
||||
void dw_mci_remove(struct dw_mci *host)
|
||||
{
|
||||
int i;
|
||||
int i = 0;
|
||||
|
||||
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);
|
||||
}
|
||||
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 */
|
||||
|
@ -3316,8 +3277,9 @@ EXPORT_SYMBOL(dw_mci_runtime_suspend);
|
|||
|
||||
int dw_mci_runtime_resume(struct device *dev)
|
||||
{
|
||||
int i, ret = 0;
|
||||
int i = 0, ret = 0;
|
||||
struct dw_mci *host = dev_get_drvdata(dev);
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
if (host->cur_slot &&
|
||||
(mmc_can_gpio_cd(host->cur_slot->mmc) ||
|
||||
|
@ -3356,17 +3318,12 @@ int dw_mci_runtime_resume(struct device *dev)
|
|||
DW_MCI_ERROR_FLAGS);
|
||||
mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
|
||||
|
||||
for (i = 0; i < host->num_slots; i++) {
|
||||
struct dw_mci_slot *slot = host->slot[i];
|
||||
|
||||
if (!slot)
|
||||
continue;
|
||||
if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER)
|
||||
dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
|
||||
if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER)
|
||||
dw_mci_set_ios(slot->mmc, &slot->mmc->ios);
|
||||
|
||||
/* Force setup bus to guarantee available clock output */
|
||||
dw_mci_setup_bus(slot, true);
|
||||
}
|
||||
/* Force setup bus to guarantee available clock output */
|
||||
dw_mci_setup_bus(slot, true);
|
||||
|
||||
/* Now that slots are all setup, we can enable card detect */
|
||||
dw_mci_enable_cd(host);
|
||||
|
|
Loading…
Reference in New Issue