Воскресенье, 16 февраля 2014, 22:03 +08:00 от Shawn Guo <shawn.guo@xxxxxxxxxx>:
> For imx50-weim and imx6q-weim type of devices, there might a WEIM CS
> space configuration register in General Purpose Register controller,
> e.g. IOMUXC_GPR1 on i.MX6Q.
...
> +static int __init imx_weim_gpr_setup(struct platform_device *pdev)
> +{
> + struct device_node *np = pdev->dev.of_node;
> + struct property *prop;
> + const __be32 *p;
> + struct regmap *gpr;
> + u32 gprvals[4] = {
> + 05, /* CS0(128M) CS1(0M) CS2(0M) CS3(0M) */
> + 033, /* CS0(64M) CS1(64M) CS2(0M) CS3(0M) */
> + 0113, /* CS0(64M) CS1(32M) CS2(32M) CS3(0M) */
> + 01111, /* CS0(64M) CS1(32M) CS2(32M) CS3(0M) */
> + };
> + u32 gprval = 0;
> + u32 val;
> + int cs = 0;
> + int i = 0;
> +
> + gpr = syscon_regmap_lookup_by_phandle(np, "fsl,weim-cs-gpr");
> + if (IS_ERR(gpr)) {
> + dev_dbg(&pdev->dev, "failed to find weim-cs-gpr\n");
> + return 0;
Only one comment:
You do not use these error codes in the probe(),
so let's declare this function as void.
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