sysmo-bts
/
barebox
9
0
Fork 0
Code Releases Activity

mci i.MX: Switch to clock support 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-09-23 17:51:14 +02:00
parent c7cea55e0a
commit 3591842f8a
1 changed files with 12 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/mci/imx.c
View File

@ -25,6 +25,8 @@
#include <clock.h>
#include <init.h>
#include <driver.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <mach/clock.h>
#include <io.h>
@ -103,6 +105,7 @@ struct mxcmci_regs {
struct mxcmci_host {
struct mci_host mci;
struct mxcmci_regs *base;
struct clk *clk;
int irq;
int detect_irq;
int dma;
@ -415,7 +418,7 @@ static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios)
{
unsigned int divider;
int prescaler = 0;
unsigned long clk_in = imx_get_mmcclk();
unsigned long clk_in = clk_get_rate(host->clk);
while (prescaler <= 0x800) {
for (divider = 1; divider <= 0xF; divider++) {
@ -490,9 +493,14 @@ static int mxcmci_init(struct mci_host *mci, struct device_d *dev)
static int mxcmci_probe(struct device_d *dev)
{
struct mxcmci_host *host;
unsigned long rate;
host = xzalloc(sizeof(*host));
host->clk = clk_get(dev, NULL);
if (IS_ERR(host->clk))
return PTR_ERR(host->clk);
host->mci.send_cmd = mxcmci_request;
host->mci.set_ios = mxcmci_set_ios;
host->mci.init = mxcmci_init;
@ -503,8 +511,9 @@ static int mxcmci_probe(struct device_d *dev)
host->mci.voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
host->mci.f_min = imx_get_mmcclk() >> 7;
host->mci.f_max = imx_get_mmcclk() >> 1;
rate = clk_get_rate(host->clk);
host->mci.f_min = rate >> 7;
host->mci.f_max = rate >> 1;
mci_register(&host->mci);