[PATCH v5 3/9] pinctrl: actions: Add Actions S900 pinctrl driver

[Manivannan Sadhasivam]

Add pinctrl driver for Actions Semi S900 SoC. The driver supports
pinctrl, pinmux and pinconf functionalities through a range of registers
common to both gpio driver and pinctrl driver.

Pinmux functionality is available only for the pin groups while the
pinconf functionality is available for both pin groups and individual
pins.

Signed-off-by: Manivannan Sadhasivam 
---
 drivers/pinctrl/Kconfig|1 +
 drivers/pinctrl/Makefile   |1 +
 drivers/pinctrl/actions/Kconfig|   12 +
 drivers/pinctrl/actions/Makefile   |2 +
 drivers/pinctrl/actions/pinctrl-owl.c  |  579 ++
 drivers/pinctrl/actions/pinctrl-owl.h  |  142 +++
 drivers/pinctrl/actions/pinctrl-s900.c | 1861 
 7 files changed, 2598 insertions(+)
 create mode 100644 drivers/pinctrl/actions/Kconfig
 create mode 100644 drivers/pinctrl/actions/Makefile
 create mode 100644 drivers/pinctrl/actions/pinctrl-owl.c
 create mode 100644 drivers/pinctrl/actions/pinctrl-owl.h
 create mode 100644 drivers/pinctrl/actions/pinctrl-s900.c

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 0f254b35c378..838c8fff8c24 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -368,6 +368,7 @@ config PINCTRL_OCELOT
select GENERIC_PINMUX_FUNCTIONS
select REGMAP_MMIO
 
+source "drivers/pinctrl/actions/Kconfig"
 source "drivers/pinctrl/aspeed/Kconfig"
 source "drivers/pinctrl/bcm/Kconfig"
 source "drivers/pinctrl/berlin/Kconfig"
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index d3692633e9ed..fb3497c1a4cb 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_INGENIC) += pinctrl-ingenic.o
 obj-$(CONFIG_PINCTRL_RK805)+= pinctrl-rk805.o
 obj-$(CONFIG_PINCTRL_OCELOT)   += pinctrl-ocelot.o
 
+obj-y  += actions/
 obj-$(CONFIG_ARCH_ASPEED)  += aspeed/
 obj-y  += bcm/
 obj-$(CONFIG_PINCTRL_BERLIN)   += berlin/
diff --git a/drivers/pinctrl/actions/Kconfig b/drivers/pinctrl/actions/Kconfig
new file mode 100644
index ..1c7309c90f0d
--- /dev/null
+++ b/drivers/pinctrl/actions/Kconfig
@@ -0,0 +1,12 @@
+config PINCTRL_OWL
+   bool
+   depends on (ARCH_ACTIONS || COMPILE_TEST) && OF
+   select PINMUX
+   select PINCONF
+   select GENERIC_PINCONF
+
+config PINCTRL_S900
+   bool "Actions Semi S900 pinctrl driver"
+   select PINCTRL_OWL
+   help
+ Say Y here to enable Actions Semi S900 pinctrl driver
diff --git a/drivers/pinctrl/actions/Makefile b/drivers/pinctrl/actions/Makefile
new file mode 100644
index ..bd232d28400f
--- /dev/null
+++ b/drivers/pinctrl/actions/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_PINCTRL_OWL)  += pinctrl-owl.o
+obj-$(CONFIG_PINCTRL_S900) += pinctrl-s900.o
diff --git a/drivers/pinctrl/actions/pinctrl-owl.c 
b/drivers/pinctrl/actions/pinctrl-owl.c
new file mode 100644
index ..1a526abebf91
--- /dev/null
+++ b/drivers/pinctrl/actions/pinctrl-owl.c
@@ -0,0 +1,579 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * OWL SoC's Pinctrl driver
+ *
+ * Copyright (c) 2014 Actions Semi Inc.
+ * Author: David Liu 
+ *
+ * Copyright (c) 2018 Linaro Ltd.
+ * Author: Manivannan Sadhasivam 
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+#include "pinctrl-owl.h"
+
+/**
+ * struct owl_pinctrl - pinctrl state of the device
+ * @dev: device handle
+ * @pctrldev: pinctrl handle
+ * @lock: spinlock to protect registers
+ * @soc: reference to soc_data
+ * @base: pinctrl register base address
+ */
+struct owl_pinctrl {
+   struct device *dev;
+   struct pinctrl_dev *pctrldev;
+   raw_spinlock_t lock;
+   struct clk *clk;
+   const struct owl_pinctrl_soc_data *soc;
+   void __iomem *base;
+};
+
+static void owl_update_bits(void __iomem *base, u32 mask, u32 val)
+{
+   u32 reg_val;
+
+   reg_val = readl_relaxed(base);
+
+   reg_val &= ~mask;
+   reg_val |= val;
+
+   writel_relaxed(reg_val, base);
+}
+
+static int owl_get_groups_count(struct pinctrl_dev *pctrldev)
+{
+   struct owl_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctrldev);
+
+   return pctrl->soc->ngroups;
+}
+
+static const char *owl_get_group_name(struct pinctrl_dev *pctrldev,
+   unsigned int group)
+{
+   struct owl_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctrldev);
+
+   return pctrl->soc->groups[group].name;
+}
+
+static int owl_get_group_pins(struct pinctrl_dev *pctrldev,
+   unsigned int group,
+   const unsigned int **pins,
+   unsigned int *num_pins)
+{
+   struct 

[PATCH v5 3/9] pinctrl: actions: Add Actions S900 pinctrl driver

[Manivannan Sadhasivam]

Add pinctrl driver for Actions Semi S900 SoC. The driver supports
pinctrl, pinmux and pinconf functionalities through a range of registers
common to both gpio driver and pinctrl driver.

Pinmux functionality is available only for the pin groups while the
pinconf functionality is available for both pin groups and individual
pins.

Signed-off-by: Manivannan Sadhasivam 
---
 drivers/pinctrl/Kconfig|1 +
 drivers/pinctrl/Makefile   |1 +
 drivers/pinctrl/actions/Kconfig|   12 +
 drivers/pinctrl/actions/Makefile   |2 +
 drivers/pinctrl/actions/pinctrl-owl.c  |  579 ++
 drivers/pinctrl/actions/pinctrl-owl.h  |  142 +++
 drivers/pinctrl/actions/pinctrl-s900.c | 1861 
 7 files changed, 2598 insertions(+)
 create mode 100644 drivers/pinctrl/actions/Kconfig
 create mode 100644 drivers/pinctrl/actions/Makefile
 create mode 100644 drivers/pinctrl/actions/pinctrl-owl.c
 create mode 100644 drivers/pinctrl/actions/pinctrl-owl.h
 create mode 100644 drivers/pinctrl/actions/pinctrl-s900.c

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 0f254b35c378..838c8fff8c24 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -368,6 +368,7 @@ config PINCTRL_OCELOT
select GENERIC_PINMUX_FUNCTIONS
select REGMAP_MMIO
 
+source "drivers/pinctrl/actions/Kconfig"
 source "drivers/pinctrl/aspeed/Kconfig"
 source "drivers/pinctrl/bcm/Kconfig"
 source "drivers/pinctrl/berlin/Kconfig"
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index d3692633e9ed..fb3497c1a4cb 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_INGENIC) += pinctrl-ingenic.o
 obj-$(CONFIG_PINCTRL_RK805)+= pinctrl-rk805.o
 obj-$(CONFIG_PINCTRL_OCELOT)   += pinctrl-ocelot.o
 
+obj-y  += actions/
 obj-$(CONFIG_ARCH_ASPEED)  += aspeed/
 obj-y  += bcm/
 obj-$(CONFIG_PINCTRL_BERLIN)   += berlin/
diff --git a/drivers/pinctrl/actions/Kconfig b/drivers/pinctrl/actions/Kconfig
new file mode 100644
index ..1c7309c90f0d
--- /dev/null
+++ b/drivers/pinctrl/actions/Kconfig
@@ -0,0 +1,12 @@
+config PINCTRL_OWL
+   bool
+   depends on (ARCH_ACTIONS || COMPILE_TEST) && OF
+   select PINMUX
+   select PINCONF
+   select GENERIC_PINCONF
+
+config PINCTRL_S900
+   bool "Actions Semi S900 pinctrl driver"
+   select PINCTRL_OWL
+   help
+ Say Y here to enable Actions Semi S900 pinctrl driver
diff --git a/drivers/pinctrl/actions/Makefile b/drivers/pinctrl/actions/Makefile
new file mode 100644
index ..bd232d28400f
--- /dev/null
+++ b/drivers/pinctrl/actions/Makefile
@@ -0,0 +1,2 @@
+obj-$(CONFIG_PINCTRL_OWL)  += pinctrl-owl.o
+obj-$(CONFIG_PINCTRL_S900) += pinctrl-s900.o
diff --git a/drivers/pinctrl/actions/pinctrl-owl.c 
b/drivers/pinctrl/actions/pinctrl-owl.c
new file mode 100644
index ..1a526abebf91
--- /dev/null
+++ b/drivers/pinctrl/actions/pinctrl-owl.c
@@ -0,0 +1,579 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * OWL SoC's Pinctrl driver
+ *
+ * Copyright (c) 2014 Actions Semi Inc.
+ * Author: David Liu 
+ *
+ * Copyright (c) 2018 Linaro Ltd.
+ * Author: Manivannan Sadhasivam 
+ */
+
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+#include 
+
+#include "../core.h"
+#include "../pinctrl-utils.h"
+#include "pinctrl-owl.h"
+
+/**
+ * struct owl_pinctrl - pinctrl state of the device
+ * @dev: device handle
+ * @pctrldev: pinctrl handle
+ * @lock: spinlock to protect registers
+ * @soc: reference to soc_data
+ * @base: pinctrl register base address
+ */
+struct owl_pinctrl {
+   struct device *dev;
+   struct pinctrl_dev *pctrldev;
+   raw_spinlock_t lock;
+   struct clk *clk;
+   const struct owl_pinctrl_soc_data *soc;
+   void __iomem *base;
+};
+
+static void owl_update_bits(void __iomem *base, u32 mask, u32 val)
+{
+   u32 reg_val;
+
+   reg_val = readl_relaxed(base);
+
+   reg_val &= ~mask;
+   reg_val |= val;
+
+   writel_relaxed(reg_val, base);
+}
+
+static int owl_get_groups_count(struct pinctrl_dev *pctrldev)
+{
+   struct owl_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctrldev);
+
+   return pctrl->soc->ngroups;
+}
+
+static const char *owl_get_group_name(struct pinctrl_dev *pctrldev,
+   unsigned int group)
+{
+   struct owl_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctrldev);
+
+   return pctrl->soc->groups[group].name;
+}
+
+static int owl_get_group_pins(struct pinctrl_dev *pctrldev,
+   unsigned int group,
+   const unsigned int **pins,
+   unsigned int *num_pins)
+{
+   struct owl_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctrldev);
+
+   *pins =