summaryrefslogtreecommitdiff
path: root/drivers/bus
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/imx-weim.c41
1 files changed, 14 insertions, 27 deletions
diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
index 349f14e886b7..0c0e6fea129f 100644
--- a/drivers/bus/imx-weim.c
+++ b/drivers/bus/imx-weim.c
@@ -12,11 +12,6 @@
#include <linux/io.h>
#include <linux/of_device.h>
-struct imx_weim {
- void __iomem *base;
- struct clk *clk;
-};
-
static const struct of_device_id weim_id_table[] = {
{ .compatible = "fsl,imx6q-weim", },
{}
@@ -27,10 +22,8 @@ MODULE_DEVICE_TABLE(of, weim_id_table);
#define CS_REG_RANGE 0x18
/* Parse and set the timing for this device. */
-static int
-weim_timing_setup(struct platform_device *pdev, struct device_node *np)
+static int weim_timing_setup(struct device_node *np, void __iomem *base)
{
- struct imx_weim *weim = platform_get_drvdata(pdev);
u32 value[CS_TIMING_LEN];
u32 cs_idx;
int ret;
@@ -52,11 +45,11 @@ weim_timing_setup(struct platform_device *pdev, struct device_node *np)
/* set the timing for WEIM */
for (i = 0; i < CS_TIMING_LEN; i++)
- writel(value[i], weim->base + cs_idx * CS_REG_RANGE + i * 4);
+ writel(value[i], base + cs_idx * CS_REG_RANGE + i * 4);
return 0;
}
-static int weim_parse_dt(struct platform_device *pdev)
+static int weim_parse_dt(struct platform_device *pdev, void __iomem *base)
{
struct device_node *child;
int ret;
@@ -65,7 +58,7 @@ static int weim_parse_dt(struct platform_device *pdev)
if (!child->name)
continue;
- ret = weim_timing_setup(pdev, child);
+ ret = weim_timing_setup(child, base);
if (ret) {
dev_err(&pdev->dev, "%s set timing failed.\n",
child->full_name);
@@ -82,38 +75,32 @@ static int weim_parse_dt(struct platform_device *pdev)
static int weim_probe(struct platform_device *pdev)
{
- struct imx_weim *weim;
struct resource *res;
+ struct clk *clk;
+ void __iomem *base;
int ret = -EINVAL;
- weim = devm_kzalloc(&pdev->dev, sizeof(*weim), GFP_KERNEL);
- if (!weim) {
- ret = -ENOMEM;
- goto weim_err;
- }
- platform_set_drvdata(pdev, weim);
-
/* get the resource */
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- weim->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(weim->base)) {
- ret = PTR_ERR(weim->base);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base)) {
+ ret = PTR_ERR(base);
goto weim_err;
}
/* get the clock */
- weim->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(weim->clk))
+ clk = devm_clk_get(&pdev->dev, NULL);
+ if (IS_ERR(clk))
goto weim_err;
- ret = clk_prepare_enable(weim->clk);
+ ret = clk_prepare_enable(clk);
if (ret)
goto weim_err;
/* parse the device node */
- ret = weim_parse_dt(pdev);
+ ret = weim_parse_dt(pdev, base);
if (ret) {
- clk_disable_unprepare(weim->clk);
+ clk_disable_unprepare(clk);
goto weim_err;
}