[PATCH 03/17] MMC: OMAP: Fix timeout calculation for MMC multislot support

Carlos Aguiar
2007-11-26T16:01:13Z

From: Juha Yrjola <juha.yrjola@solidboot.com>

Fix the data timeout calculation for MMC multislot support.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
---
drivers/mmc/host/omap.c | 9 ++++-----
1 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 51b3bcb..be93ab4 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -882,13 +882,12 @@ static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_reques

static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)
{
- int timeout;
+ unsigned int timeout, cycle_ns;
u16 reg;

- /* Convert ns to clock cycles by assuming 20MHz frequency
- * 1 cycle at 20MHz = 500 ns
- */
- timeout = req->data->timeout_clks + req->data->timeout_ns / 500;
+ cycle_ns = 1000000000 / host->current_slot->fclk_freq;
+ timeout = req->data->timeout_ns / cycle_ns;
+ timeout += req->data->timeout_clks;

/* Check if we need to use timeout multiplier register */
reg = OMAP_MMC_READ(host, SDIO);
-- 1.5.3.GIT