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IMX: introduce clock API

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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>
This commit is contained in:
Sascha Hauer
2008-07-05 10:02:46 +02:00
committed by Robert Schwebel
parent dbff4e9ea2
commit 38a41fdf94
9 changed files with 308 additions and 110 deletions
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19
drivers/mmc/host/imxmmc.c
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@ -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);