diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2010-07-21 15:55:18 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-07-29 18:40:32 +0400 |
| commit | 4380c14fd77338bac9d1da4dc5dd9f6eb4966c82 (patch) | |
| tree | 1042ee4eec5b78c646fb75f6f8bb71328eb52673 | |
| parent | 4956e10903fd3459306dd9438c1e714ba3068a2a (diff) | |
| download | linux-4380c14fd77338bac9d1da4dc5dd9f6eb4966c82.tar.xz | |
ARM: 6245/1: mmci: enable hardware flow control on Ux500 variants
Although both the U300 and Ux500 use ST variants, the HWFCEN bits are at
different positions, so use the variant_data to store the information.
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | drivers/mmc/host/mmci.c | 8 | ||||
| -rw-r--r-- | drivers/mmc/host/mmci.h | 2 |
2 files changed, 6 insertions, 4 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index fd2e7acbed39..379af904bf6c 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -39,19 +39,23 @@ static unsigned int fmax = 515633; /** * struct variant_data - MMCI variant-specific quirks * @clkreg: default value for MCICLOCK register + * @clkreg_enable: enable value for MMCICLOCK register */ struct variant_data { unsigned int clkreg; + unsigned int clkreg_enable; }; static struct variant_data variant_arm = { }; static struct variant_data variant_u300 = { + .clkreg_enable = 1 << 13, /* HWFCEN */ }; static struct variant_data variant_ux500 = { .clkreg = MCI_CLK_ENABLE, + .clkreg_enable = 1 << 14, /* HWFCEN */ }; /* * This must be called with host->lock held @@ -71,8 +75,8 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) clk = 255; host->cclk = host->mclk / (2 * (clk + 1)); } - if (host->hw_designer == AMBA_VENDOR_ST) - clk |= MCI_ST_FCEN; /* Bug fix in ST IP block */ + + clk |= variant->clkreg_enable; clk |= MCI_CLK_ENABLE; /* This hasn't proven to be worthwhile */ /* clk |= MCI_CLK_PWRSAVE; */ diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index b98cc782402a..68970cfb81e1 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -28,8 +28,6 @@ #define MCI_4BIT_BUS (1 << 11) /* 8bit wide buses supported in ST Micro versions */ #define MCI_ST_8BIT_BUS (1 << 12) -/* HW flow control on the ST Micro version */ -#define MCI_ST_FCEN (1 << 13) #define MMCIARGUMENT 0x008 #define MMCICOMMAND 0x00c |