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authorLars-Peter Clausen <lars@metafoo.de>2009-10-10 20:37:42 +0200
committerLars-Peter Clausen <lars@metafoo.de>2009-12-06 08:46:43 +0100
commitf80843a39a47066857363de4270f3c23495095f4 (patch)
treee0758c0456e62eaa88e4a675ac2bfb239431a6cd /drivers/mfd
parent0fd425a2d37c7d6f0dcd5403c0fde2b729026d61 (diff)
glamo-mci: Reset if engine is stalled.
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/glamo/glamo-mci.c45
1 files changed, 23 insertions, 22 deletions
diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c
index a173bbaaea3..948e380700c 100644
--- a/drivers/mfd/glamo/glamo-mci.c
+++ b/drivers/mfd/glamo/glamo-mci.c
@@ -140,6 +140,22 @@ static void glamo_reg_set_bit_mask(struct glamo_mci_host *glamo,
glamo_reg_write(glamo, reg, tmp);
}
+static void glamo_mci_reset(struct glamo_mci_host *host)
+{
+ glamo_engine_reset(host->core, GLAMO_ENGINE_MMC);
+
+ glamo_reg_write(host, GLAMO_REG_MMC_WDATADS1,
+ (uint16_t)(host->data_mem->start));
+ glamo_reg_write(host, GLAMO_REG_MMC_WDATADS2,
+ (uint16_t)(host->data_mem->start >> 16));
+
+ glamo_reg_write(host, GLAMO_REG_MMC_RDATADS1,
+ (uint16_t)(host->data_mem->start));
+ glamo_reg_write(host, GLAMO_REG_MMC_RDATADS2,
+ (uint16_t)(host->data_mem->start >> 16));
+
+}
+
static void glamo_mci_clock_disable(struct glamo_mci_host *host)
{
if (host->clk_enabled) {
@@ -229,8 +245,10 @@ static int glamo_mci_wait_idle(struct glamo_mci_host *host,
status = glamo_reg_read(host, GLAMO_REG_MMC_RB_STAT1);
} while (!(status & GLAMO_STAT1_MMC_IDLE) && jiffies < timeout);
- if (jiffies >= timeout)
+ if (jiffies >= timeout) {
+ glamo_mci_reset(host);
return -ETIMEDOUT;
+ }
return 0;
}
@@ -880,17 +898,8 @@ static int glamo_mci_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mmc);
glamo_engine_enable(host->core, GLAMO_ENGINE_MMC);
- glamo_engine_reset(host->core, GLAMO_ENGINE_MMC);
-
- glamo_reg_write(host, GLAMO_REG_MMC_WDATADS1,
- (uint16_t)(host->data_mem->start));
- glamo_reg_write(host, GLAMO_REG_MMC_WDATADS2,
- (uint16_t)(host->data_mem->start >> 16));
-
- glamo_reg_write(host, GLAMO_REG_MMC_RDATADS1,
- (uint16_t)(host->data_mem->start));
- glamo_reg_write(host, GLAMO_REG_MMC_RDATADS2,
- (uint16_t)(host->data_mem->start >> 16));
+ glamo_mci_reset(host);
+ glamo_engine_disable(host->core, GLAMO_ENGINE_MMC);
setup_timer(&host->disable_timer, glamo_mci_disable_timer,
(unsigned long)host);
@@ -970,18 +979,10 @@ static int glamo_mci_resume(struct device *dev)
struct glamo_mci_host *host = mmc_priv(mmc);
int ret;
- glamo_engine_enable(host->core, GLAMO_ENGINE_MMC);
- glamo_engine_reset(host->core, GLAMO_ENGINE_MMC);
- glamo_reg_write(host, GLAMO_REG_MMC_WDATADS1,
- (uint16_t)(host->data_mem->start));
- glamo_reg_write(host, GLAMO_REG_MMC_WDATADS2,
- (uint16_t)(host->data_mem->start >> 16));
+ glamo_engine_enable(host->core, GLAMO_ENGINE_MMC);
+ glamo_mci_reset(host);
- glamo_reg_write(host, GLAMO_REG_MMC_RDATADS1,
- (uint16_t)(host->data_mem->start));
- glamo_reg_write(host, GLAMO_REG_MMC_RDATADS2,
- (uint16_t)(host->data_mem->start >> 16));
mdelay(5);
ret = mmc_resume_host(host->mmc);