#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/slot-gpio.h>
-#include <linux/mmc/tmio.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
host->sdcard_irq_mask &= ~(i & TMIO_MASK_IRQ);
- sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
+ sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
}
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
host->sdcard_irq_mask |= (i & TMIO_MASK_IRQ);
- sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
+ sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
}
static void tmio_mmc_ack_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
- sd_ctrl_write32(host, CTL_STATUS, ~i);
+ sd_ctrl_write32_as_16_and_16(host, CTL_STATUS, ~i);
}
static void tmio_mmc_init_sg(struct tmio_mmc_host *host, struct mmc_data *data)
}
}
-static void tmio_mmc_set_clock(struct tmio_mmc_host *host,
- unsigned int new_clock)
+static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
{
- u32 clk = 0, clock;
-
- if (new_clock) {
- for (clock = host->mmc->f_min, clk = 0x80000080;
- new_clock >= (clock << 1);
- clk >>= 1)
- clock <<= 1;
-
- /* 1/1 clock is option */
- if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) &&
- ((clk >> 22) & 0x1))
- clk |= 0xff;
- }
-
- if (host->set_clk_div)
- host->set_clk_div(host->pdev, (clk >> 22) & 1);
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
+ sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
+ msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 1 : 10);
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
- sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK);
- if (!(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG))
+ if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) {
+ sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100);
msleep(10);
+ }
}
static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 5 : 10);
+ msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 5 : 10);
}
-static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
+static void tmio_mmc_set_clock(struct tmio_mmc_host *host,
+ unsigned int new_clock)
{
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
- sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 1 : 10);
+ u32 clk = 0, clock;
- if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) {
- sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100);
- msleep(10);
+ if (new_clock == 0) {
+ tmio_mmc_clk_stop(host);
+ return;
}
+
+ if (host->clk_update)
+ clock = host->clk_update(host, new_clock) / 512;
+ else
+ clock = host->mmc->f_min;
+
+ for (clk = 0x80000080; new_clock >= (clock << 1); clk >>= 1)
+ clock <<= 1;
+
+ /* 1/1 clock is option */
+ if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) && ((clk >> 22) & 0x1))
+ clk |= 0xff;
+
+ if (host->set_clk_div)
+ host->set_clk_div(host->pdev, (clk >> 22) & 1);
+
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
+ sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK);
+ if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
+ msleep(10);
+
+ tmio_mmc_clk_start(host);
}
static void tmio_mmc_reset(struct tmio_mmc_host *host)
tmio_mmc_abort_dma(host);
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(host->mmc));
- pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
/* called with host->lock held, interrupts disabled */
tmio_mmc_abort_dma(host);
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(host->mmc));
- pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
static void tmio_mmc_done_work(struct work_struct *work)
tmio_mmc_enable_mmc_irqs(host, irq_mask);
/* Fire off the command */
- sd_ctrl_write32(host, CTL_ARG_REG, cmd->arg);
+ sd_ctrl_write32_as_16_and_16(host, CTL_ARG_REG, cmd->arg);
sd_ctrl_write16(host, CTL_SD_CMD, c);
return 0;
goto out;
if (host->chan_tx && (data->flags & MMC_DATA_WRITE) && !host->force_pio) {
- u32 status = sd_ctrl_read32(host, CTL_STATUS);
+ u32 status = sd_ctrl_read16_and_16_as_32(host, CTL_STATUS);
bool done = false;
/*
* waiting for one more interrupt fixes the problem.
*/
if (host->pdata->flags & TMIO_MMC_HAS_IDLE_WAIT) {
- if (status & TMIO_STAT_ILL_FUNC)
+ if (status & TMIO_STAT_SCLKDIVEN)
done = true;
} else {
if (!(status & TMIO_STAT_CMD_BUSY))
*/
for (i = 3, addr = CTL_RESPONSE ; i >= 0 ; i--, addr += 4)
- cmd->resp[i] = sd_ctrl_read32(host, addr);
+ cmd->resp[i] = sd_ctrl_read16_and_16_as_32(host, addr);
if (cmd->flags & MMC_RSP_136) {
cmd->resp[0] = (cmd->resp[0] << 8) | (cmd->resp[1] >> 24);
spin_unlock(&host->lock);
}
-static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host,
- int *ireg, int *status)
-{
- *status = sd_ctrl_read32(host, CTL_STATUS);
- *ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask;
-
- pr_debug_status(*status);
- pr_debug_status(*ireg);
-
- /* Clear the status except the interrupt status */
- sd_ctrl_write32(host, CTL_STATUS, TMIO_MASK_IRQ);
-}
-
static bool __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host,
int ireg, int status)
{
return false;
}
-irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid)
-{
- unsigned int ireg, status;
- struct tmio_mmc_host *host = devid;
-
- tmio_mmc_card_irq_status(host, &ireg, &status);
- __tmio_mmc_card_detect_irq(host, ireg, status);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL(tmio_mmc_card_detect_irq);
-
static bool __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host,
int ireg, int status)
{
return false;
}
-irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid)
-{
- unsigned int ireg, status;
- struct tmio_mmc_host *host = devid;
-
- tmio_mmc_card_irq_status(host, &ireg, &status);
- __tmio_mmc_sdcard_irq(host, ireg, status);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL(tmio_mmc_sdcard_irq);
-
-irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
+static void tmio_mmc_sdio_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
struct mmc_host *mmc = host->mmc;
unsigned int sdio_status;
if (!(pdata->flags & TMIO_MMC_SDIO_IRQ))
- return IRQ_HANDLED;
+ return;
status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask;
if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ)
mmc_signal_sdio_irq(mmc);
-
- return IRQ_HANDLED;
}
-EXPORT_SYMBOL(tmio_mmc_sdio_irq);
irqreturn_t tmio_mmc_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
unsigned int ireg, status;
- pr_debug("MMC IRQ begin\n");
+ status = sd_ctrl_read16_and_16_as_32(host, CTL_STATUS);
+ ireg = status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask;
+
+ pr_debug_status(status);
+ pr_debug_status(ireg);
+
+ /* Clear the status except the interrupt status */
+ sd_ctrl_write32_as_16_and_16(host, CTL_STATUS, TMIO_MASK_IRQ);
- tmio_mmc_card_irq_status(host, &ireg, &status);
if (__tmio_mmc_card_detect_irq(host, ireg, status))
return IRQ_HANDLED;
if (__tmio_mmc_sdcard_irq(host, ireg, status))
spin_unlock_irqrestore(&host->lock, flags);
- pm_runtime_get_sync(mmc_dev(mmc));
-
if (mrq->data) {
ret = tmio_mmc_start_data(host, mrq->data);
if (ret)
host->mrq = NULL;
mrq->cmd->error = ret;
mmc_request_done(mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
-static int tmio_mmc_clk_update(struct tmio_mmc_host *host)
+static int tmio_mmc_clk_enable(struct tmio_mmc_host *host)
{
- struct mmc_host *mmc = host->mmc;
- int ret;
-
if (!host->clk_enable)
return -ENOTSUPP;
- ret = host->clk_enable(host->pdev, &mmc->f_max);
- if (!ret)
- mmc->f_min = mmc->f_max / 512;
-
- return ret;
+ return host->clk_enable(host);
}
static void tmio_mmc_power_on(struct tmio_mmc_host *host, unsigned short vdd)
struct device *dev = &host->pdev->dev;
unsigned long flags;
- pm_runtime_get_sync(mmc_dev(mmc));
-
mutex_lock(&host->ios_lock);
spin_lock_irqsave(&host->lock, flags);
tmio_mmc_clk_stop(host);
break;
case MMC_POWER_UP:
- tmio_mmc_set_clock(host, ios->clock);
tmio_mmc_power_on(host, ios->vdd);
- tmio_mmc_clk_start(host);
+ tmio_mmc_set_clock(host, ios->clock);
tmio_mmc_set_bus_width(host, ios->bus_width);
break;
case MMC_POWER_ON:
tmio_mmc_set_clock(host, ios->clock);
- tmio_mmc_clk_start(host);
tmio_mmc_set_bus_width(host, ios->bus_width);
break;
}
host->clk_cache = ios->clock;
mutex_unlock(&host->ios_lock);
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
static int tmio_mmc_get_ro(struct mmc_host *mmc)
if (ret >= 0)
return ret;
- pm_runtime_get_sync(mmc_dev(mmc));
ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
- (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
+ (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
return ret;
}
return blk_size;
}
-static const struct mmc_host_ops tmio_mmc_ops = {
+static int tmio_mmc_card_busy(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+
+ return !(sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_DAT0);
+}
+
+static struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
.get_cd = mmc_gpio_get_cd,
.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
+ .card_busy = tmio_mmc_card_busy,
.multi_io_quirk = tmio_multi_io_quirk,
};
goto host_free;
}
+ tmio_mmc_ops.start_signal_voltage_switch = _host->start_signal_voltage_switch;
mmc->ops = &tmio_mmc_ops;
+
mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
mmc->caps2 |= pdata->capabilities2;
mmc->max_segs = 32;
mmc->caps & MMC_CAP_NONREMOVABLE ||
mmc->slot.cd_irq >= 0);
- if (tmio_mmc_clk_update(_host) < 0) {
+ if (tmio_mmc_clk_enable(_host) < 0) {
mmc->f_max = pdata->hclk;
mmc->f_min = mmc->f_max / 512;
}
tmio_mmc_clk_stop(_host);
tmio_mmc_reset(_host);
- _host->sdcard_irq_mask = sd_ctrl_read32(_host, CTL_IRQ_MASK);
+ _host->sdcard_irq_mask = sd_ctrl_read16_and_16_as_32(_host, CTL_IRQ_MASK);
tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
/* Unmask the IRQs we want to know about */
tmio_mmc_clk_stop(host);
if (host->clk_disable)
- host->clk_disable(host->pdev);
+ host->clk_disable(host);
return 0;
}
struct tmio_mmc_host *host = mmc_priv(mmc);
tmio_mmc_reset(host);
- tmio_mmc_clk_update(host);
+ tmio_mmc_clk_enable(host);
- if (host->clk_cache) {
+ if (host->clk_cache)
tmio_mmc_set_clock(host, host->clk_cache);
- tmio_mmc_clk_start(host);
- }
tmio_mmc_enable_dma(host, true);
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