omap: reuse omap3 gpio support in omap4

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

arch/arm/cpu/armv7/omap-common/Makefile

@@ -29,6 +29,7 @@ SOBJS	:= reset.o
 
 COBJS	:= timer.o
 COBJS	+= utils.o
+COBJS	+= gpio.o
 
 ifdef CONFIG_SPL_BUILD
 COBJS	+= spl.o

arch/arm/cpu/armv7/omap3/gpio.c → arch/arm/cpu/armv7/omap-common/gpio.c

@@ -36,24 +36,13 @@
  * published by the Free Software Foundation.
  */
 #include <common.h>
-#include <asm/arch/gpio.h>
+#include <asm/omap_gpio.h>
 #include <asm/io.h>
 #include <asm/errno.h>
 
-static struct gpio_bank gpio_bank_34xx[6] = {
-	{ (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
-	{ (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
-	{ (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
-	{ (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
-	{ (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
-	{ (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
-};
-
-static struct gpio_bank *gpio_bank = &gpio_bank_34xx[0];
-
-static inline struct gpio_bank *get_gpio_bank(int gpio)
+static inline const struct gpio_bank *get_gpio_bank(int gpio)
 {
-	return &gpio_bank[gpio >> 5];
+	return &omap_gpio_bank[gpio >> 5];
 }
 
 static inline int get_gpio_index(int gpio)
@@ -79,14 +68,15 @@ static int check_gpio(int gpio)
 	return 0;
 }
 
-static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
+static void _set_gpio_direction(const struct gpio_bank *bank, int gpio,
+				int is_input)
 {
 	void *reg = bank->base;
 	u32 l;
 
 	switch (bank->method) {
 	case METHOD_GPIO_24XX:
-		reg += OMAP24XX_GPIO_OE;
+		reg += OMAP_GPIO_OE;
 		break;
 	default:
 		return;
@@ -101,7 +91,7 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
 
 void omap_set_gpio_direction(int gpio, int is_input)
 {
-	struct gpio_bank *bank;
+	const struct gpio_bank *bank;
 
 	if (check_gpio(gpio) < 0)
 		return;
@@ -109,7 +99,8 @@ void omap_set_gpio_direction(int gpio, int is_input)
 	_set_gpio_direction(bank, get_gpio_index(gpio), is_input);
 }
 
-static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
+static void _set_gpio_dataout(const struct gpio_bank *bank, int gpio,
+				int enable)
 {
 	void *reg = bank->base;
 	u32 l = 0;
@@ -117,9 +108,9 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
 	switch (bank->method) {
 	case METHOD_GPIO_24XX:
 		if (enable)
-			reg += OMAP24XX_GPIO_SETDATAOUT;
+			reg += OMAP_GPIO_SETDATAOUT;
 		else
-			reg += OMAP24XX_GPIO_CLEARDATAOUT;
+			reg += OMAP_GPIO_CLEARDATAOUT;
 		l = 1 << gpio;
 		break;
 	default:
@@ -132,7 +123,7 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
 
 void omap_set_gpio_dataout(int gpio, int enable)
 {
-	struct gpio_bank *bank;
+	const struct gpio_bank *bank;
 
 	if (check_gpio(gpio) < 0)
 		return;
@@ -142,7 +133,7 @@ void omap_set_gpio_dataout(int gpio, int enable)
 
 int omap_get_gpio_datain(int gpio)
 {
-	struct gpio_bank *bank;
+	const struct gpio_bank *bank;
 	void *reg;
 
 	if (check_gpio(gpio) < 0)
@@ -151,7 +142,7 @@ int omap_get_gpio_datain(int gpio)
 	reg = bank->base;
 	switch (bank->method) {
 	case METHOD_GPIO_24XX:
-		reg += OMAP24XX_GPIO_DATAIN;
+		reg += OMAP_GPIO_DATAIN;
 		break;
 	default:
 		return -EINVAL;
@@ -160,7 +151,7 @@ int omap_get_gpio_datain(int gpio)
 			& (1 << get_gpio_index(gpio))) != 0;
 }
 
-static void _reset_gpio(struct gpio_bank *bank, int gpio)
+static void _reset_gpio(const struct gpio_bank *bank, int gpio)
 {
 	_set_gpio_direction(bank, get_gpio_index(gpio), 1);
 }
@@ -175,7 +166,7 @@ int omap_request_gpio(int gpio)
 
 void omap_free_gpio(int gpio)
 {
-	struct gpio_bank *bank;
+	const struct gpio_bank *bank;
 
 	if (check_gpio(gpio) < 0)
 		return;

arch/arm/cpu/armv7/omap3/Makefile

@@ -29,7 +29,6 @@ SOBJS	:= lowlevel_init.o
 
 COBJS	+= board.o
 COBJS	+= clock.o
-COBJS	+= gpio.o
 COBJS	+= mem.o
 COBJS	+= sys_info.o
 

arch/arm/cpu/armv7/omap3/board.c

@@ -38,12 +38,24 @@
 #include <asm/arch/mem.h>
 #include <asm/cache.h>
 #include <asm/armv7.h>
+#include <asm/omap_gpio.h>
 
 /* Declarations */
 extern omap3_sysinfo sysinfo;
 static void omap3_setup_aux_cr(void);
 static void omap3_invalidate_l2_cache_secure(void);
 
+static const struct gpio_bank gpio_bank_34xx[6] = {
+	{ (void *)OMAP34XX_GPIO1_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP34XX_GPIO2_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP34XX_GPIO3_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP34XX_GPIO4_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP34XX_GPIO5_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP34XX_GPIO6_BASE, METHOD_GPIO_24XX },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_34xx;
+
 /******************************************************************************
  * Routine: delay
  * Description: spinning delay to use before udelay works

arch/arm/cpu/armv7/omap4/board.c

@@ -33,12 +33,24 @@
 #include <asm/arch/sys_proto.h>
 #include <asm/sizes.h>
 #include <asm/arch/emif.h>
+#include <asm/omap_gpio.h>
 #include "omap4_mux_data.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
 u32 *const omap4_revision = (u32 *)OMAP4_SRAM_SCRATCH_OMAP4_REV;
 
+static const struct gpio_bank gpio_bank_44xx[6] = {
+	{ (void *)OMAP44XX_GPIO1_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO2_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO3_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO4_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO5_BASE, METHOD_GPIO_24XX },
+	{ (void *)OMAP44XX_GPIO6_BASE, METHOD_GPIO_24XX },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_44xx;
+
 #ifdef CONFIG_SPL_BUILD
 /*
  * We use static variables because global data is not ready yet.

arch/arm/cpu/armv7/omap4/clocks.c

@@ -830,9 +830,9 @@ void prcm_init(void)
 	case OMAP_INIT_CONTEXT_SPL:
 	case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR:
 	case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH:
+		enable_basic_clocks();
 		scale_vcores();
 		setup_dplls();
-		enable_basic_clocks();
 		setup_non_essential_dplls();
 		enable_non_essential_clocks();
 		break;

arch/arm/include/asm/arch-omap3/cpu.h

@@ -498,4 +498,30 @@ struct pm {
 /* MUSB base */
 #define MUSB_BASE		(OMAP34XX_CORE_L4_IO_BASE + 0xAB000)
 
+/* OMAP3 GPIO registers */
+#define OMAP_GPIO_REVISION		0x0000
+#define OMAP_GPIO_SYSCONFIG		0x0010
+#define OMAP_GPIO_SYSSTATUS		0x0014
+#define OMAP_GPIO_IRQSTATUS1		0x0018
+#define OMAP_GPIO_IRQSTATUS2		0x0028
+#define OMAP_GPIO_IRQENABLE2		0x002c
+#define OMAP_GPIO_IRQENABLE1		0x001c
+#define OMAP_GPIO_WAKE_EN		0x0020
+#define OMAP_GPIO_CTRL			0x0030
+#define OMAP_GPIO_OE			0x0034
+#define OMAP_GPIO_DATAIN		0x0038
+#define OMAP_GPIO_DATAOUT		0x003c
+#define OMAP_GPIO_LEVELDETECT0		0x0040
+#define OMAP_GPIO_LEVELDETECT1		0x0044
+#define OMAP_GPIO_RISINGDETECT		0x0048
+#define OMAP_GPIO_FALLINGDETECT		0x004c
+#define OMAP_GPIO_DEBOUNCE_EN		0x0050
+#define OMAP_GPIO_DEBOUNCE_VAL		0x0054
+#define OMAP_GPIO_CLEARIRQENABLE1	0x0060
+#define OMAP_GPIO_SETIRQENABLE1		0x0064
+#define OMAP_GPIO_CLEARWKUENA		0x0080
+#define OMAP_GPIO_SETWKUENA		0x0084
+#define OMAP_GPIO_CLEARDATAOUT		0x0090
+#define OMAP_GPIO_SETDATAOUT		0x0094
+
 #endif /* _CPU_H */

arch/arm/include/asm/arch-omap4/cpu.h

@@ -142,4 +142,30 @@ struct watchdog {
 /* MUSB base */
 #define MUSB_BASE		(OMAP44XX_L4_CORE_BASE + 0xAB000)
 
+/* OMAP4 GPIO registers */
+#define OMAP_GPIO_REVISION		0x0000
+#define OMAP_GPIO_SYSCONFIG		0x0010
+#define OMAP_GPIO_SYSSTATUS		0x0114
+#define OMAP_GPIO_IRQSTATUS1		0x0118
+#define OMAP_GPIO_IRQSTATUS2		0x0128
+#define OMAP_GPIO_IRQENABLE2		0x012c
+#define OMAP_GPIO_IRQENABLE1		0x011c
+#define OMAP_GPIO_WAKE_EN		0x0120
+#define OMAP_GPIO_CTRL			0x0130
+#define OMAP_GPIO_OE			0x0134
+#define OMAP_GPIO_DATAIN		0x0138
+#define OMAP_GPIO_DATAOUT		0x013c
+#define OMAP_GPIO_LEVELDETECT0		0x0140
+#define OMAP_GPIO_LEVELDETECT1		0x0144
+#define OMAP_GPIO_RISINGDETECT		0x0148
+#define OMAP_GPIO_FALLINGDETECT		0x014c
+#define OMAP_GPIO_DEBOUNCE_EN		0x0150
+#define OMAP_GPIO_DEBOUNCE_VAL		0x0154
+#define OMAP_GPIO_CLEARIRQENABLE1	0x0160
+#define OMAP_GPIO_SETIRQENABLE1		0x0164
+#define OMAP_GPIO_CLEARWKUENA		0x0180
+#define OMAP_GPIO_SETWKUENA		0x0184
+#define OMAP_GPIO_CLEARDATAOUT		0x0190
+#define OMAP_GPIO_SETDATAOUT		0x0194
+
 #endif /* _CPU_H */

arch/arm/include/asm/arch-omap4/omap4.h

@@ -153,4 +153,12 @@ struct s32ktimer {
 #define DEV_DATA_PTR_OFFSET	0x18
 #define BOOT_MODE_OFFSET	0x8
 
+/* GPIO */
+#define OMAP44XX_GPIO1_BASE		0x4A310000
+#define OMAP44XX_GPIO2_BASE		0x48055000
+#define OMAP44XX_GPIO3_BASE		0x48057000
+#define OMAP44XX_GPIO4_BASE		0x48059000
+#define OMAP44XX_GPIO5_BASE		0x4805B000
+#define OMAP44XX_GPIO6_BASE		0x4805D000
+
 #endif

arch/arm/include/asm/arch-omap3/gpio.h → arch/arm/include/asm/omap_gpio.h

@@ -38,36 +38,15 @@
 #ifndef _GPIO_H
 #define _GPIO_H
 
-#define OMAP24XX_GPIO_REVISION		0x0000
-#define OMAP24XX_GPIO_SYSCONFIG		0x0010
-#define OMAP24XX_GPIO_SYSSTATUS		0x0014
-#define OMAP24XX_GPIO_IRQSTATUS1	0x0018
-#define OMAP24XX_GPIO_IRQSTATUS2	0x0028
-#define OMAP24XX_GPIO_IRQENABLE2	0x002c
-#define OMAP24XX_GPIO_IRQENABLE1	0x001c
-#define OMAP24XX_GPIO_WAKE_EN		0x0020
-#define OMAP24XX_GPIO_CTRL		0x0030
-#define OMAP24XX_GPIO_OE		0x0034
-#define OMAP24XX_GPIO_DATAIN		0x0038
-#define OMAP24XX_GPIO_DATAOUT		0x003c
-#define OMAP24XX_GPIO_LEVELDETECT0	0x0040
-#define OMAP24XX_GPIO_LEVELDETECT1	0x0044
-#define OMAP24XX_GPIO_RISINGDETECT	0x0048
-#define OMAP24XX_GPIO_FALLINGDETECT	0x004c
-#define OMAP24XX_GPIO_DEBOUNCE_EN	0x0050
-#define OMAP24XX_GPIO_DEBOUNCE_VAL	0x0054
-#define OMAP24XX_GPIO_CLEARIRQENABLE1	0x0060
-#define OMAP24XX_GPIO_SETIRQENABLE1	0x0064
-#define OMAP24XX_GPIO_CLEARWKUENA	0x0080
-#define OMAP24XX_GPIO_SETWKUENA		0x0084
-#define OMAP24XX_GPIO_CLEARDATAOUT	0x0090
-#define OMAP24XX_GPIO_SETDATAOUT	0x0094
+#include <asm/arch/cpu.h>
 
 struct gpio_bank {
 	void *base;
 	int method;
 };
 
+extern const struct gpio_bank *const omap_gpio_bank;
+
 #define METHOD_GPIO_24XX	4
 
 /* This is the interface */