diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2008-07-05 12:02:46 +0400 |
|---|---|---|
| committer | Robert Schwebel <r.schwebel@pengutronix.de> | 2008-07-05 12:02:46 +0400 |
| commit | 38a41fdf94c449c165213e4665c3f8a0d30f8aba (patch) | |
| tree | cde7f6c0da8c9877736a6b66f245e163fa21c2f7 /drivers/mmc/host/imxmmc.c | |
| parent | dbff4e9ea2e83fda89143389bfb229cb29425a32 (diff) | |
| download | linux-38a41fdf94c449c165213e4665c3f8a0d30f8aba.tar.xz | |
IMX: introduce clock API
This patch introduces the clock API for i.MX and converts all
in-Kernel drivers to use it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/mmc/host/imxmmc.c')
| -rw-r--r-- | drivers/mmc/host/imxmmc.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c index 95f33e87a99c..ef2f6fc86541 100644 --- a/drivers/mmc/host/imxmmc.c +++ b/drivers/mmc/host/imxmmc.c @@ -42,6 +42,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/card.h> #include <linux/delay.h> +#include <linux/clk.h> #include <asm/dma.h> #include <asm/io.h> @@ -92,6 +93,8 @@ struct imxmci_host { unsigned char actual_bus_width; int prev_cmd_code; + + struct clk *clk; }; #define IMXMCI_PEND_IRQ_b 0 @@ -841,7 +844,7 @@ static void imxmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) /* The prescaler is 5 for PERCLK2 equal to 96MHz * then 96MHz / 5 = 19.2 MHz */ - clk=imx_get_perclk2(); + clk = clk_get_rate(host->clk); prescaler=(clk+(CLK_RATE*7)/8)/CLK_RATE; switch(prescaler) { case 0: @@ -994,6 +997,13 @@ static int imxmci_probe(struct platform_device *pdev) host->res = r; host->irq = irq; + host->clk = clk_get(&pdev->dev, "perclk2"); + if (IS_ERR(host->clk)) { + ret = PTR_ERR(host->clk); + goto out; + } + clk_enable(host->clk); + imx_gpio_mode(PB8_PF_SD_DAT0); imx_gpio_mode(PB9_PF_SD_DAT1); imx_gpio_mode(PB10_PF_SD_DAT2); @@ -1053,6 +1063,10 @@ out: imx_dma_free(host->dma); host->dma_allocated=0; } + if (host->clk) { + clk_disable(host->clk); + clk_put(host->clk); + } } if (mmc) mmc_free_host(mmc); @@ -1082,6 +1096,9 @@ static int imxmci_remove(struct platform_device *pdev) tasklet_kill(&host->tasklet); + clk_disable(host->clk); + clk_put(host->clk); + release_resource(host->res); mmc_free_host(mmc); |