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Subject[PATCH 1/6] pinctrl: spear: spear: Convert to regmap
Date
Resources need to be shared between pinmux and plgpio.

Use regmap (syscon) to access resources to allow an
easy way to share resources.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
drivers/pinctrl/spear/pinctrl-spear.c | 10 +++++++---
drivers/pinctrl/spear/pinctrl-spear.h | 12 ++++++++----
2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/pinctrl/spear/pinctrl-spear.c b/drivers/pinctrl/spear/pinctrl-spear.c
index 948f56abb9ae..e0543c1ad641 100644
--- a/drivers/pinctrl/spear/pinctrl-spear.c
+++ b/drivers/pinctrl/spear/pinctrl-spear.c
@@ -14,6 +14,7 @@
*/

#include <linux/err.h>
+#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_address.h>
@@ -367,9 +368,12 @@ int spear_pinctrl_probe(struct platform_device *pdev,
if (!pmx)
return -ENOMEM;

- pmx->vbase = devm_platform_ioremap_resource(pdev, 0);
- if (IS_ERR(pmx->vbase))
- return PTR_ERR(pmx->vbase);
+ pmx->regmap = device_node_to_regmap(np);
+ if (IS_ERR(pmx->regmap)) {
+ dev_err(&pdev->dev, "Init regmap failed (%pe).\n",
+ pmx->regmap);
+ return PTR_ERR(pmx->regmap);
+ }

pmx->dev = &pdev->dev;
pmx->machdata = machdata;
diff --git a/drivers/pinctrl/spear/pinctrl-spear.h b/drivers/pinctrl/spear/pinctrl-spear.h
index db029b148c87..63a0b5ea56ef 100644
--- a/drivers/pinctrl/spear/pinctrl-spear.h
+++ b/drivers/pinctrl/spear/pinctrl-spear.h
@@ -15,6 +15,7 @@
#include <linux/gpio/driver.h>
#include <linux/io.h>
#include <linux/pinctrl/pinctrl.h>
+#include <linux/regmap.h>
#include <linux/types.h>

struct platform_device;
@@ -172,24 +173,27 @@ struct spear_pinctrl_machdata {
* @dev: pointer to struct dev of platform_device registered
* @pctl: pointer to struct pinctrl_dev
* @machdata: pointer to SoC or machine specific structure
- * @vbase: virtual base address of pinmux controller
+ * @regmap: regmap of pinmux controller
*/
struct spear_pmx {
struct device *dev;
struct pinctrl_dev *pctl;
struct spear_pinctrl_machdata *machdata;
- void __iomem *vbase;
+ struct regmap *regmap;
};

/* exported routines */
static inline u32 pmx_readl(struct spear_pmx *pmx, u32 reg)
{
- return readl_relaxed(pmx->vbase + reg);
+ u32 val;
+
+ regmap_read(pmx->regmap, reg, &val);
+ return val;
}

static inline void pmx_writel(struct spear_pmx *pmx, u32 val, u32 reg)
{
- writel_relaxed(val, pmx->vbase + reg);
+ regmap_write(pmx->regmap, reg, val);
}

void pmx_init_addr(struct spear_pinctrl_machdata *machdata, u16 reg);
--
2.31.1
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