diff options
| author | Heiko Stübner <heiko@sntech.de> | 2014-05-05 11:59:51 (GMT) |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-05-09 09:16:13 (GMT) |
| commit | 1e747e59cc4d1f4e31b0e352eeb0394dc3d56cf0 (patch) | |
| tree | ec9031b4db844103d9cc30c0ab373eeb73551e7b /drivers/pinctrl/pinctrl-rockchip.c | |
| parent | a658efaa85f60422e7731a0dcac3696429f7deac (diff) | |
| download | linux-1e747e59cc4d1f4e31b0e352eeb0394dc3d56cf0.tar.xz | |
pinctrl: rockchip: base regmap supplied by a syscon
This allows the basic registers of the general register files to be supplied
by a syscon instead of being mapped locally.
The GRF registers contain a lot more than pinctrl functions like dma, usb-phy
and general soc control and status registers, intermixed with the iomux, pull
and drive-strength registers.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Max Schwarz <max.schwarz@online.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-rockchip.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-rockchip.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index d6e2401..bb805d5 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -1574,30 +1574,39 @@ static int rockchip_pinctrl_probe(struct platform_device *pdev) } info->ctrl = ctrl; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - rockchip_regmap_config.max_register = resource_size(res) - 4; - rockchip_regmap_config.name = "rockchip,pinctrl"; - info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base, - &rockchip_regmap_config); - - /* to check for the old dt-bindings */ - info->reg_size = resource_size(res); - - /* Honor the old binding, with pull registers as 2nd resource */ - if (ctrl->type == RK3188 && info->reg_size < 0x200) { - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + node = of_parse_phandle(np, "rockchip,grf", 0); + if (node) { + info->regmap_base = syscon_node_to_regmap(node); + if (IS_ERR(info->regmap_base)) + return PTR_ERR(info->regmap_base); + } else { + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) return PTR_ERR(base); rockchip_regmap_config.max_register = resource_size(res) - 4; - rockchip_regmap_config.name = "rockchip,pinctrl-pull"; - info->regmap_pull = devm_regmap_init_mmio(&pdev->dev, base, - &rockchip_regmap_config); + rockchip_regmap_config.name = "rockchip,pinctrl"; + info->regmap_base = devm_regmap_init_mmio(&pdev->dev, base, + &rockchip_regmap_config); + + /* to check for the old dt-bindings */ + info->reg_size = resource_size(res); + + /* Honor the old binding, with pull registers as 2nd resource */ + if (ctrl->type == RK3188 && info->reg_size < 0x200) { + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + rockchip_regmap_config.max_register = + resource_size(res) - 4; + rockchip_regmap_config.name = "rockchip,pinctrl-pull"; + info->regmap_pull = devm_regmap_init_mmio(&pdev->dev, + base, + &rockchip_regmap_config); + } } /* try to find the optional reference to the pmu syscon */ |