diff options
Diffstat (limited to 'drivers/mfd/syscon.c')
| -rw-r--r-- | drivers/mfd/syscon.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c index b7aabeefab07..2f2225e845ef 100644 --- a/drivers/mfd/syscon.c +++ b/drivers/mfd/syscon.c @@ -36,7 +36,7 @@ struct syscon { struct list_head list; }; -static struct regmap_config syscon_regmap_config = { +static const struct regmap_config syscon_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, @@ -50,6 +50,7 @@ static struct syscon *of_syscon_register(struct device_node *np) u32 reg_io_width; int ret; struct regmap_config syscon_config = syscon_regmap_config; + struct resource res; if (!of_device_is_compatible(np, "syscon")) return ERR_PTR(-EINVAL); @@ -58,7 +59,12 @@ static struct syscon *of_syscon_register(struct device_node *np) if (!syscon) return ERR_PTR(-ENOMEM); - base = of_iomap(np, 0); + if (of_address_to_resource(np, 0, &res)) { + ret = -ENOMEM; + goto err_map; + } + + base = ioremap(res.start, resource_size(&res)); if (!base) { ret = -ENOMEM; goto err_map; @@ -81,6 +87,7 @@ static struct syscon *of_syscon_register(struct device_node *np) syscon_config.reg_stride = reg_io_width; syscon_config.val_bits = reg_io_width * 8; + syscon_config.max_register = resource_size(&res) - reg_io_width; regmap = regmap_init_mmio(NULL, base, &syscon_config); if (IS_ERR(regmap)) { @@ -192,6 +199,7 @@ static int syscon_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct syscon_platform_data *pdata = dev_get_platdata(dev); struct syscon *syscon; + struct regmap_config syscon_config = syscon_regmap_config; struct resource *res; void __iomem *base; @@ -207,11 +215,10 @@ static int syscon_probe(struct platform_device *pdev) if (!base) return -ENOMEM; - syscon_regmap_config.max_register = res->end - res->start - 3; + syscon_config.max_register = res->end - res->start - 3; if (pdata) - syscon_regmap_config.name = pdata->label; - syscon->regmap = devm_regmap_init_mmio(dev, base, - &syscon_regmap_config); + syscon_config.name = pdata->label; + syscon->regmap = devm_regmap_init_mmio(dev, base, &syscon_config); if (IS_ERR(syscon->regmap)) { dev_err(dev, "regmap init failed\n"); return PTR_ERR(syscon->regmap); |