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path: root/drivers/mmc/host/msm_sdcc.c
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Diffstat (limited to 'drivers/mmc/host/msm_sdcc.c')
-rw-r--r--drivers/mmc/host/msm_sdcc.c86
1 files changed, 58 insertions, 28 deletions
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index a4c865a5286b..80d8eb143b48 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -213,7 +213,8 @@ msmsdcc_dma_exec_func(struct msm_dmov_cmd *cmd)
msmsdcc_writel(host, host->cmd_timeout, MMCIDATATIMER);
msmsdcc_writel(host, (unsigned int)host->curr.xfer_size,
MMCIDATALENGTH);
- msmsdcc_writel(host, host->cmd_pio_irqmask, MMCIMASK1);
+ msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
+ (~MCI_IRQ_PIO)) | host->cmd_pio_irqmask, MMCIMASK0);
msmsdcc_writel(host, host->cmd_datactrl, MMCIDATACTRL);
if (host->cmd_cmd) {
@@ -388,7 +389,7 @@ static int msmsdcc_config_dma(struct msmsdcc_host *host, struct mmc_data *data)
n = dma_map_sg(mmc_dev(host->mmc), host->dma.sg,
host->dma.num_ents, host->dma.dir);
if (n == 0) {
- printk(KERN_ERR "%s: Unable to map in all sg elements\n",
+ pr_err("%s: Unable to map in all sg elements\n",
mmc_hostname(host->mmc));
host->dma.sg = NULL;
host->dma.num_ents = 0;
@@ -474,7 +475,7 @@ msmsdcc_start_command_deferred(struct msmsdcc_host *host,
*c |= MCI_CSPM_MCIABORT;
if (host->curr.cmd != NULL) {
- printk(KERN_ERR "%s: Overlapping command requests\n",
+ pr_err("%s: Overlapping command requests\n",
mmc_hostname(host->mmc));
}
host->curr.cmd = cmd;
@@ -543,7 +544,9 @@ msmsdcc_start_data(struct msmsdcc_host *host, struct mmc_data *data,
msmsdcc_writel(host, host->curr.xfer_size, MMCIDATALENGTH);
- msmsdcc_writel(host, pio_irqmask, MMCIMASK1);
+ msmsdcc_writel(host, (msmsdcc_readl(host, MMCIMASK0) &
+ (~MCI_IRQ_PIO)) | pio_irqmask, MMCIMASK0);
+
msmsdcc_writel(host, datactrl, MMCIDATACTRL);
if (cmd) {
@@ -659,8 +662,13 @@ msmsdcc_pio_irq(int irq, void *dev_id)
{
struct msmsdcc_host *host = dev_id;
uint32_t status;
+ u32 mci_mask0;
status = msmsdcc_readl(host, MMCISTATUS);
+ mci_mask0 = msmsdcc_readl(host, MMCIMASK0);
+
+ if (((mci_mask0 & status) & MCI_IRQ_PIO) == 0)
+ return IRQ_NONE;
do {
unsigned long flags;
@@ -719,10 +727,12 @@ msmsdcc_pio_irq(int irq, void *dev_id)
} while (1);
if (status & MCI_RXACTIVE && host->curr.xfer_remain < MCI_FIFOSIZE)
- msmsdcc_writel(host, MCI_RXDATAAVLBLMASK, MMCIMASK1);
+ msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) |
+ MCI_RXDATAAVLBLMASK, MMCIMASK0);
if (!host->curr.xfer_remain)
- msmsdcc_writel(host, 0, MMCIMASK1);
+ msmsdcc_writel(host, (mci_mask0 & (~MCI_IRQ_PIO)) | 0,
+ MMCIMASK0);
return IRQ_HANDLED;
}
@@ -854,6 +864,8 @@ msmsdcc_irq(int irq, void *dev_id)
do {
status = msmsdcc_readl(host, MMCISTATUS);
status &= msmsdcc_readl(host, MMCIMASK0);
+ if ((status & (~MCI_IRQ_PIO)) == 0)
+ break;
msmsdcc_writel(host, status, MMCICLEAR);
if (status & MCI_SDIOINTR)
@@ -939,7 +951,7 @@ static void msmsdcc_setup_gpio(struct msmsdcc_host *host, bool enable)
struct msm_mmc_gpio_data *curr;
int i, rc = 0;
- if (!host->plat->gpio_data && host->gpio_config_status == enable)
+ if (!host->plat->gpio_data || host->gpio_config_status == enable)
return;
curr = host->plat->gpio_data;
@@ -1052,10 +1064,19 @@ static void msmsdcc_enable_sdio_irq(struct mmc_host *mmc, int enable)
spin_unlock_irqrestore(&host->lock, flags);
}
+static void msmsdcc_init_card(struct mmc_host *mmc, struct mmc_card *card)
+{
+ struct msmsdcc_host *host = mmc_priv(mmc);
+
+ if (host->plat->init_card)
+ host->plat->init_card(card);
+}
+
static const struct mmc_host_ops msmsdcc_ops = {
.request = msmsdcc_request,
.set_ios = msmsdcc_set_ios,
.enable_sdio_irq = msmsdcc_enable_sdio_irq,
+ .init_card = msmsdcc_init_card,
};
static void
@@ -1092,7 +1113,7 @@ msmsdcc_platform_status_irq(int irq, void *dev_id)
{
struct msmsdcc_host *host = dev_id;
- printk(KERN_DEBUG "%s: %d\n", __func__, irq);
+ pr_debug("%s: %d\n", __func__, irq);
msmsdcc_check_status((unsigned long) host);
return IRQ_HANDLED;
}
@@ -1102,7 +1123,7 @@ msmsdcc_status_notify_cb(int card_present, void *dev_id)
{
struct msmsdcc_host *host = dev_id;
- printk(KERN_DEBUG "%s: card_present %d\n", mmc_hostname(host->mmc),
+ pr_debug("%s: card_present %d\n", mmc_hostname(host->mmc),
card_present);
msmsdcc_check_status((unsigned long) host);
}
@@ -1150,7 +1171,6 @@ msmsdcc_probe(struct platform_device *pdev)
struct msmsdcc_host *host;
struct mmc_host *mmc;
struct resource *cmd_irqres = NULL;
- struct resource *pio_irqres = NULL;
struct resource *stat_irqres = NULL;
struct resource *memres = NULL;
struct resource *dmares = NULL;
@@ -1175,12 +1195,10 @@ msmsdcc_probe(struct platform_device *pdev)
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
cmd_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
"cmd_irq");
- pio_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
- "pio_irq");
stat_irqres = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
"status_irq");
- if (!cmd_irqres || !pio_irqres || !memres) {
+ if (!cmd_irqres || !memres) {
pr_err("%s: Invalid resource\n", __func__);
return -ENXIO;
}
@@ -1200,17 +1218,20 @@ msmsdcc_probe(struct platform_device *pdev)
host->plat = plat;
host->mmc = mmc;
host->curr.cmd = NULL;
+ init_timer(&host->busclk_timer);
+ host->busclk_timer.data = (unsigned long) host;
+ host->busclk_timer.function = msmsdcc_busclk_expired;
+
host->cmdpoll = 1;
host->base = ioremap(memres->start, PAGE_SIZE);
if (!host->base) {
ret = -ENOMEM;
- goto out;
+ goto host_free;
}
host->cmd_irqres = cmd_irqres;
- host->pio_irqres = pio_irqres;
host->memres = memres;
host->dmares = dmares;
spin_lock_init(&host->lock);
@@ -1221,13 +1242,19 @@ msmsdcc_probe(struct platform_device *pdev)
/*
* Setup DMA
*/
- msmsdcc_init_dma(host);
+ if (host->dmares) {
+ ret = msmsdcc_init_dma(host);
+ if (ret)
+ goto ioremap_free;
+ } else {
+ host->dma.channel = -1;
+ }
/* Get our clocks */
host->pclk = clk_get(&pdev->dev, "sdc_pclk");
if (IS_ERR(host->pclk)) {
ret = PTR_ERR(host->pclk);
- goto host_free;
+ goto dma_free;
}
host->clk = clk_get(&pdev->dev, "sdc_clk");
@@ -1236,17 +1263,17 @@ msmsdcc_probe(struct platform_device *pdev)
goto pclk_put;
}
- /* Enable clocks */
- ret = msmsdcc_enable_clocks(host);
- if (ret)
- goto clk_put;
-
ret = clk_set_rate(host->clk, msmsdcc_fmin);
if (ret) {
pr_err("%s: Clock rate set failed (%d)\n", __func__, ret);
- goto clk_disable;
+ goto clk_put;
}
+ /* Enable clocks */
+ ret = msmsdcc_enable_clocks(host);
+ if (ret)
+ goto clk_put;
+
host->pclk_rate = clk_get_rate(host->pclk);
host->clk_rate = clk_get_rate(host->clk);
@@ -1316,16 +1343,12 @@ msmsdcc_probe(struct platform_device *pdev)
host->eject = !host->oldstat;
}
- init_timer(&host->busclk_timer);
- host->busclk_timer.data = (unsigned long) host;
- host->busclk_timer.function = msmsdcc_busclk_expired;
-
ret = request_irq(cmd_irqres->start, msmsdcc_irq, IRQF_SHARED,
DRIVER_NAME " (cmd)", host);
if (ret)
goto stat_irq_free;
- ret = request_irq(pio_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
+ ret = request_irq(cmd_irqres->start, msmsdcc_pio_irq, IRQF_SHARED,
DRIVER_NAME " (pio)", host);
if (ret)
goto cmd_irq_free;
@@ -1368,6 +1391,13 @@ msmsdcc_probe(struct platform_device *pdev)
clk_put(host->clk);
pclk_put:
clk_put(host->pclk);
+dma_free:
+ if (host->dmares)
+ dma_free_coherent(NULL, sizeof(struct msmsdcc_nc_dmadata),
+ host->dma.nc, host->dma.nc_busaddr);
+ioremap_free:
+ tasklet_kill(&host->dma_tlet);
+ iounmap(host->base);
host_free:
mmc_free_host(mmc);
out:
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-10 09:15:14 +0000