static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
{
struct sh_mmcif_host *host = dev_id;
u32 state, mask;
state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
mask = sh_mmcif_readl(host->addr, MMCIF_CE_INT_MASK);
if (host->ccs_enable)
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~(state & mask));
else
sh_mmcif_writel(host->addr, MMCIF_CE_INT, INT_CCS | ~(state & mask));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state & MASK_CLEAN);
if (state & ~MASK_CLEAN)
dev_dbg(&host->pd->dev, "IRQ state = 0x%08x incompletely cleared\n",
state);
if (state & INT_ERR_STS || state & ~INT_ALL) {
host->sd_error = true;
dev_dbg(&host->pd->dev, "int err state = 0x%08x\n", state);
}
if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
if (!host->mrq)
dev_dbg(&host->pd->dev, "NULL IRQ state = 0x%08x\n", state);
if (!host->dma_active)
return IRQ_WAKE_THREAD;
else if (host->sd_error)
mmcif_dma_complete(host);
} else {
dev_dbg(&host->pd->dev, "Unexpected IRQ 0x%x\n", state);
}
return IRQ_HANDLED;
}
static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
{
struct sh_mmcif_host *host = dev_id;
u32 state = 0;
int err = 0;
state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
if (state & INT_RBSYE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_RBSYE | INT_CRSPE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
} else if (state & INT_CRSPE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE);
} else if (state & INT_BUFREN) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
} else if (state & INT_BUFWEN) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
} else if (state & INT_CMD12DRE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_CMD12DRE | INT_CMD12RBE |
INT_CMD12CRE | INT_BUFRE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
} else if (state & INT_BUFRE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
} else if (state & INT_DTRANE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_DTRANE);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
} else if (state & INT_CMD12RBE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_CMD12RBE | INT_CMD12CRE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
} else if (state & INT_ERR_STS) {
/* err interrupts */
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
} else {
pr_debug("%s: Not support int\n", DRIVER_NAME);
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
}
if (err) {
host->sd_error = 1;
pr_debug("%s: int err state = %08x\n", DRIVER_NAME, state);
}
host->wait_int = 1;
wake_up(&host->intr_wait);
return IRQ_HANDLED;
}
static void sh_mmcif_sync_reset(struct sh_mmcif_host *host)
{
u32 tmp;
tmp = 0x010f0000 & sh_mmcif_readl(host->addr, MMCIF_CE_CLK_CTRL);
sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_ON);
sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_OFF);
sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, tmp |
SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29);
/* byte swap on */
sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP);
}
static int sh_mmcif_single_write(struct sh_mmcif_host *host,
struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
long time;
u32 blocksize, i, *p = sg_virt(data->sg);
host->wait_int = 0;
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
/* buf write enable */
time = wait_event_interruptible_timeout(host->intr_wait,
host->wait_int == 1 ||
host->sd_error == 1, host->timeout);
if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
return sh_mmcif_error_manage(host);
host->wait_int = 0;
blocksize = (BLOCK_SIZE_MASK &
sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3;
for (i = 0; i < blocksize / 4; i++)
sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
/* buffer write end */
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
time = wait_event_interruptible_timeout(host->intr_wait,
host->wait_int == 1 ||
host->sd_error == 1, host->timeout);
if (host->wait_int != 1 && (time == 0 || host->sd_error != 0))
return sh_mmcif_error_manage(host);
host->wait_int = 0;
return 0;
}
static int sh_mmcif_multi_write(struct sh_mmcif_host *host,
struct mmc_request *mrq)
{
struct mmc_data *data = mrq->data;
long time;
u32 i, sec, j, blocksize, *p;
blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr,
MMCIF_CE_BLOCK_SET);
for (j = 0; j < data->sg_len; j++) {
p = sg_virt(data->sg);
host->wait_int = 0;
for (sec = 0; sec < data->sg->length / blocksize; sec++) {
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
/* buf write enable*/
time = wait_event_interruptible_timeout(host->intr_wait,
host->wait_int == 1 ||
host->sd_error == 1, host->timeout);
if (host->wait_int != 1 &&
(time == 0 || host->sd_error != 0))
return sh_mmcif_error_manage(host);
host->wait_int = 0;
for (i = 0; i < blocksize / 4; i++)
sh_mmcif_writel(host->addr,
MMCIF_CE_DATA, *p++);
}
if (j < data->sg_len - 1)
data->sg++;
}
return 0;
}
static int sh_mmcif_remove(struct platform_device *pdev)
{
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
host->dying = true;
clk_prepare_enable(host->hclk);
pm_runtime_get_sync(&pdev->dev);
dev_pm_qos_hide_latency_limit(&pdev->dev);
mmc_remove_host(host->mmc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
/*
* FIXME: cancel_delayed_work(_sync)() and free_irq() race with the
* mmc_remove_host() call above. But swapping order doesn't help either
* (a query on the linux-mmc mailing list didn't bring any replies).
*/
cancel_delayed_work_sync(&host->timeout_work);
clk_disable_unprepare(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
static int sh_mmcif_suspend(struct device *dev)
{
struct sh_mmcif_host *host = dev_get_drvdata(dev);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
return 0;
}
static int sh_mmcif_suspend(struct device *dev)
{
struct sh_mmcif_host *host = dev_get_drvdata(dev);
int ret = mmc_suspend_host(host->mmc);
if (!ret)
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
return ret;
}
static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
struct mmc_request *mrq)
{
struct mmc_command *cmd = mrq->cmd;
u32 opc = cmd->opcode;
u32 mask;
unsigned long flags;
switch (opc) {
/* response busy check */
case MMC_SLEEP_AWAKE:
case MMC_SWITCH:
case MMC_STOP_TRANSMISSION:
case MMC_SET_WRITE_PROT:
case MMC_CLR_WRITE_PROT:
case MMC_ERASE:
mask = MASK_START_CMD | MASK_MRBSYE;
break;
default:
mask = MASK_START_CMD | MASK_MCRSPE;
break;
}
if (host->ccs_enable)
mask |= MASK_MCCSTO;
if (mrq->data) {
sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0);
sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET,
mrq->data->blksz);
}
opc = sh_mmcif_set_cmd(host, mrq);
if (host->ccs_enable)
sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0);
else
sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0 | INT_CCS);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask);
/* set arg */
sh_mmcif_writel(host->addr, MMCIF_CE_ARG, cmd->arg);
/* set cmd */
spin_lock_irqsave(&host->lock, flags);
sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc);
host->wait_for = MMCIF_WAIT_FOR_CMD;
schedule_delayed_work(&host->timeout_work, host->timeout);
spin_unlock_irqrestore(&host->lock, flags);
}
static int __devexit sh_mmcif_remove(struct platform_device *pdev)
{
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
int irq[2];
host->dying = true;
clk_enable(host->hclk);
pm_runtime_get_sync(&pdev->dev);
dev_pm_qos_hide_latency_limit(&pdev->dev);
if (pd && pd->use_cd_gpio)
mmc_gpio_free_cd(host->mmc);
mmc_remove_host(host->mmc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
/*
* FIXME: cancel_delayed_work(_sync)() and free_irq() race with the
* mmc_remove_host() call above. But swapping order doesn't help either
* (a query on the linux-mmc mailing list didn't bring any replies).
*/
cancel_delayed_work_sync(&host->timeout_work);
if (host->addr)
iounmap(host->addr);
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
free_irq(irq[0], host);
free_irq(irq[1], host);
platform_set_drvdata(pdev, NULL);
clk_disable(host->hclk);
mmc_free_host(host->mmc);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
return 0;
}
static bool sh_mmcif_write_block(struct sh_mmcif_host *host)
{
struct mmc_data *data = host->mrq->data;
u32 *p = sg_virt(data->sg);
int i;
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
return false;
}
for (i = 0; i < host->blocksize / 4; i++)
sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
/* buffer write end */
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
host->wait_for = MMCIF_WAIT_FOR_WRITE_END;
return true;
}
static int __devexit sh_mmcif_remove(struct platform_device *pdev)
{
struct sh_mmcif_host *host = platform_get_drvdata(pdev);
int irq[2];
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
if (host->addr)
iounmap(host->addr);
platform_set_drvdata(pdev, NULL);
mmc_remove_host(host->mmc);
free_irq(irq[0], host);
free_irq(irq[1], host);
clk_disable(host->hclk);
mmc_free_host(host->mmc);
return 0;
}
static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host)
{
struct mmc_data *data = host->mrq->data;
u32 *p = host->pio_ptr;
int i;
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
dev_dbg(&host->pd->dev, "%s(): %d\n", __func__, data->error);
return false;
}
BUG_ON(!data->sg->length);
for (i = 0; i < host->blocksize / 4; i++)
sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
if (!sh_mmcif_next_block(host, p))
return false;
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
return true;
}
static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host)
{
struct mmc_data *data = host->mrq->data;
u32 *p = host->pio_ptr;
int i;
if (host->sd_error) {
data->error = sh_mmcif_error_manage(host);
return false;
}
BUG_ON(!data->sg->length);
for (i = 0; i < host->blocksize / 4; i++)
sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++);
if (!sh_mmcif_next_block(host, p))
return false;
schedule_delayed_work(&host->timeout_work, host->timeout);
sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
return true;
}
static int __devinit sh_mmcif_probe(struct platform_device *pdev)
{
int ret = 0, irq[2];
struct mmc_host *mmc;
struct sh_mmcif_host *host = NULL;
struct sh_mmcif_plat_data *pd = NULL;
struct resource *res;
void __iomem *reg;
char clk_name[8];
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
if (irq[0] < 0 || irq[1] < 0) {
pr_err(DRIVER_NAME": Get irq error\n");
return -ENXIO;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "platform_get_resource error.\n");
return -ENXIO;
}
reg = ioremap(res->start, resource_size(res));
if (!reg) {
dev_err(&pdev->dev, "ioremap error.\n");
return -ENOMEM;
}
pd = (struct sh_mmcif_plat_data *)(pdev->dev.platform_data);
if (!pd) {
dev_err(&pdev->dev, "sh_mmcif plat data error.\n");
ret = -ENXIO;
goto clean_up;
}
mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
goto clean_up;
}
host = mmc_priv(mmc);
host->mmc = mmc;
host->addr = reg;
host->timeout = 1000;
snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id);
host->hclk = clk_get(&pdev->dev, clk_name);
if (IS_ERR(host->hclk)) {
dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
ret = PTR_ERR(host->hclk);
goto clean_up1;
}
clk_enable(host->hclk);
host->clk = clk_get_rate(host->hclk);
host->pd = pdev;
init_waitqueue_head(&host->intr_wait);
mmc->ops = &sh_mmcif_ops;
mmc->f_max = host->clk;
/* close to 400KHz */
if (mmc->f_max < 51200000)
mmc->f_min = mmc->f_max / 128;
else if (mmc->f_max < 102400000)
mmc->f_min = mmc->f_max / 256;
else
mmc->f_min = mmc->f_max / 512;
if (pd->ocr)
mmc->ocr_avail = pd->ocr;
mmc->caps = MMC_CAP_MMC_HIGHSPEED;
if (pd->caps)
mmc->caps |= pd->caps;
mmc->max_phys_segs = 128;
mmc->max_hw_segs = 128;
mmc->max_blk_size = 512;
mmc->max_blk_count = 65535;
mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
sh_mmcif_sync_reset(host);
platform_set_drvdata(pdev, host);
mmc_add_host(mmc);
ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host);
if (ret) {
pr_err(DRIVER_NAME": request_irq error (sh_mmc:error)\n");
goto clean_up2;
}
ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host);
if (ret) {
free_irq(irq[0], host);
pr_err(DRIVER_NAME": request_irq error (sh_mmc:int)\n");
goto clean_up2;
}
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
sh_mmcif_detect(host->mmc);
pr_info("%s: driver version %s\n", DRIVER_NAME, DRIVER_VERSION);
pr_debug("%s: chip ver H'%04x\n", DRIVER_NAME,
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
return ret;
clean_up2:
clk_disable(host->hclk);
clean_up1:
mmc_free_host(mmc);
clean_up:
if (reg)
iounmap(reg);
return ret;
}
static irqreturn_t sh_mmcif_intr(int irq, void *dev_id)
{
struct sh_mmcif_host *host = dev_id;
u32 state;
int err = 0;
state = sh_mmcif_readl(host->addr, MMCIF_CE_INT);
if (state & INT_ERR_STS) {
/* error interrupts - process first */
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
} else if (state & INT_RBSYE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_RBSYE | INT_CRSPE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE);
} else if (state & INT_CRSPE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE);
} else if (state & INT_BUFREN) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN);
} else if (state & INT_BUFWEN) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN);
} else if (state & INT_CMD12DRE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_CMD12DRE | INT_CMD12RBE |
INT_CMD12CRE | INT_BUFRE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE);
} else if (state & INT_BUFRE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE);
} else if (state & INT_DTRANE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_CMD12DRE | INT_CMD12RBE |
INT_CMD12CRE | INT_DTRANE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE);
} else if (state & INT_CMD12RBE) {
sh_mmcif_writel(host->addr, MMCIF_CE_INT,
~(INT_CMD12RBE | INT_CMD12CRE));
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE);
} else {
dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state);
sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state);
sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state);
err = 1;
}
if (err) {
host->sd_error = true;
dev_dbg(&host->pd->dev, "int err state = %08x\n", state);
}
if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) {
if (!host->dma_active)
return IRQ_WAKE_THREAD;
else if (host->sd_error)
mmcif_dma_complete(host);
} else {
dev_dbg(&host->pd->dev, "Unexpected IRQ 0x%x\n", state);
}
return IRQ_HANDLED;
}
static void sh_mmcif_start_cmd(struct sh_mmcif_host *host,
struct mmc_request *mrq, struct mmc_command *cmd)
{
long time;
int ret = 0, mask = 0;
u32 opc = cmd->opcode;
host->cmd = cmd;
switch (opc) {
/* respons busy check */
case MMC_SWITCH:
case MMC_STOP_TRANSMISSION:
case MMC_SET_WRITE_PROT:
case MMC_CLR_WRITE_PROT:
case MMC_ERASE:
case MMC_GEN_CMD:
mask = MASK_MRBSYE;
break;
default:
mask = MASK_MCRSPE;
break;
}
mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR |
MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR |
MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO |
MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO;
if (host->data) {
sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0);
sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET,
mrq->data->blksz);
}
opc = sh_mmcif_set_cmd(host, mrq, cmd, opc);
sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask);
/* set arg */
sh_mmcif_writel(host->addr, MMCIF_CE_ARG, cmd->arg);
host->wait_int = 0;
/* set cmd */
sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc);
time = wait_event_interruptible_timeout(host->intr_wait,
host->wait_int == 1 || host->sd_error == 1, host->timeout);
if (host->wait_int != 1 && time == 0) {
cmd->error = sh_mmcif_error_manage(host);
return;
}
if (host->sd_error) {
switch (cmd->opcode) {
case MMC_ALL_SEND_CID:
case MMC_SELECT_CARD:
case MMC_APP_CMD:
cmd->error = -ETIMEDOUT;
break;
default:
pr_debug("%s: Cmd(d'%d) err\n",
DRIVER_NAME, cmd->opcode);
cmd->error = sh_mmcif_error_manage(host);
break;
}
host->sd_error = 0;
host->wait_int = 0;
return;
}
if (!(cmd->flags & MMC_RSP_PRESENT)) {
cmd->error = ret;
host->wait_int = 0;
return;
}
if (host->wait_int == 1) {
sh_mmcif_get_response(host, cmd);
host->wait_int = 0;
}
if (host->data) {
ret = sh_mmcif_data_trans(host, mrq, cmd->opcode);
if (ret < 0)
mrq->data->bytes_xfered = 0;
else
mrq->data->bytes_xfered =
mrq->data->blocks * mrq->data->blksz;
}
cmd->error = ret;
}
static int sh_mmcif_probe(struct platform_device *pdev)
{
int ret = 0, irq[2];
struct mmc_host *mmc;
struct sh_mmcif_host *host;
struct sh_mmcif_plat_data *pd = pdev->dev.platform_data;
struct resource *res;
void __iomem *reg;
const char *name;
irq[0] = platform_get_irq(pdev, 0);
irq[1] = platform_get_irq(pdev, 1);
if (irq[0] < 0) {
dev_err(&pdev->dev, "Get irq error\n");
return -ENXIO;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "platform_get_resource error.\n");
return -ENXIO;
}
reg = ioremap(res->start, resource_size(res));
if (!reg) {
dev_err(&pdev->dev, "ioremap error.\n");
return -ENOMEM;
}
mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
goto ealloch;
}
ret = mmc_of_parse(mmc);
if (ret < 0)
goto eofparse;
host = mmc_priv(mmc);
host->mmc = mmc;
host->addr = reg;
host->timeout = msecs_to_jiffies(10000);
host->ccs_enable = !pd || !pd->ccs_unsupported;
host->clk_ctrl2_enable = pd && pd->clk_ctrl2_present;
host->pd = pdev;
spin_lock_init(&host->lock);
mmc->ops = &sh_mmcif_ops;
sh_mmcif_init_ocr(host);
mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_WAIT_WHILE_BUSY;
if (pd && pd->caps)
mmc->caps |= pd->caps;
mmc->max_segs = 32;
mmc->max_blk_size = 512;
mmc->max_req_size = PAGE_CACHE_SIZE * mmc->max_segs;
mmc->max_blk_count = mmc->max_req_size / mmc->max_blk_size;
mmc->max_seg_size = mmc->max_req_size;
platform_set_drvdata(pdev, host);
pm_runtime_enable(&pdev->dev);
host->power = false;
host->hclk = clk_get(&pdev->dev, NULL);
if (IS_ERR(host->hclk)) {
ret = PTR_ERR(host->hclk);
dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
goto eclkget;
}
ret = sh_mmcif_clk_update(host);
if (ret < 0)
goto eclkupdate;
ret = pm_runtime_resume(&pdev->dev);
if (ret < 0)
goto eresume;
INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work);
sh_mmcif_sync_reset(host);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
name = irq[1] < 0 ? dev_name(&pdev->dev) : "sh_mmc:error";
ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, name, host);
if (ret) {
dev_err(&pdev->dev, "request_irq error (%s)\n", name);
goto ereqirq0;
}
if (irq[1] >= 0) {
ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt,
0, "sh_mmc:int", host);
if (ret) {
dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n");
goto ereqirq1;
}
}
if (pd && pd->use_cd_gpio) {
ret = mmc_gpio_request_cd(mmc, pd->cd_gpio, 0);
if (ret < 0)
goto erqcd;
}
mutex_init(&host->thread_lock);
clk_disable_unprepare(host->hclk);
ret = mmc_add_host(mmc);
if (ret < 0)
goto emmcaddh;
dev_pm_qos_expose_latency_limit(&pdev->dev, 100);
dev_info(&pdev->dev, "driver version %s\n", DRIVER_VERSION);
dev_dbg(&pdev->dev, "chip ver H'%04x\n",
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff);
return ret;
emmcaddh:
erqcd:
if (irq[1] >= 0)
free_irq(irq[1], host);
ereqirq1:
free_irq(irq[0], host);
ereqirq0:
pm_runtime_suspend(&pdev->dev);
eresume:
clk_disable_unprepare(host->hclk);
eclkupdate:
clk_put(host->hclk);
eclkget:
pm_runtime_disable(&pdev->dev);
eofparse:
mmc_free_host(mmc);
ealloch:
iounmap(reg);
return ret;
}
