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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2016-02-25 18:23:07 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2016-03-08 09:54:03 +0100 |
| commit | 8626ada871f123390b39910d47de84ab3cf67443 (patch) | |
| tree | c318e9b2463ca88ff06e12df8e4d76538bb3a788 /drivers/pinctrl/freescale/pinctrl-imx.c | |
| parent | pinctrl-bcm2835: Fix cut-and-paste error in "pull" parsing (diff) | |
| download | linux-8626ada871f123390b39910d47de84ab3cf67443.tar.xz linux-8626ada871f123390b39910d47de84ab3cf67443.zip | |
pinctrl: imx: attach iomuxc device to gpr syscon
Commit bdb0066df96e ("mfd: syscon: Decouple syscon interface from platform
devices") added the possibility to register syscon devices without
associated platform device. This also removed regmap debugfs facilities,
which don't work without a device. This patch associates the syscon regmap
that handles the IOMUX controller's general purpose registers with the
pinctrl device so that the GPR registers appear in the regmap debugfs
directory again. For example, on i.MX6Q the GPR registers now can be
read from /sys/kernel/debug/regmap/20e0000.iomuxc-gpr/registers.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/freescale/pinctrl-imx.c')
| -rw-r--r-- | drivers/pinctrl/freescale/pinctrl-imx.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index 4c435cfa5d6e..46210512d8ec 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -15,6 +15,7 @@ #include <linux/err.h> #include <linux/init.h> #include <linux/io.h> +#include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> @@ -24,6 +25,7 @@ #include <linux/pinctrl/pinctrl.h> #include <linux/pinctrl/pinmux.h> #include <linux/slab.h> +#include <linux/regmap.h> #include "../core.h" #include "pinctrl-imx.h" @@ -718,10 +720,12 @@ static int imx_pinctrl_probe_dt(struct platform_device *pdev, int imx_pinctrl_probe(struct platform_device *pdev, struct imx_pinctrl_soc_info *info) { + struct regmap_config config = { .name = "gpr" }; struct device_node *dev_np = pdev->dev.of_node; struct device_node *np; struct imx_pinctrl *ipctl; struct resource *res; + struct regmap *gpr; int ret, i; if (!info || !info->pins || !info->npins) { @@ -730,6 +734,12 @@ int imx_pinctrl_probe(struct platform_device *pdev, } info->dev = &pdev->dev; + if (info->gpr_compatible) { + gpr = syscon_regmap_lookup_by_compatible(info->gpr_compatible); + if (!IS_ERR(gpr)) + regmap_attach_dev(&pdev->dev, gpr, &config); + } + /* Create state holders etc for this driver */ ipctl = devm_kzalloc(&pdev->dev, sizeof(*ipctl), GFP_KERNEL); if (!ipctl) |