mfd: Add support for twl6030 irq framework

This patch adds support for phoenix interrupt framework. New iInterrupt
status register A, B, C are introduced in Phoenix and are cleared on write.
Due to the differences in interrupt handling with respect to TWL4030,
twl6030-irq.c is created for TWL6030 PMIC

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

7 files changed, 490 insertions, 21 deletions

diff --git a/arch/arm/plat-omap/include/plat/irqs.h b/arch/arm/plat-omap/include/plat/irqs.h
index ce5dd2d1dc21..97d6c50c3dcb 100644
--- a/arch/arm/plat-omap/include/plat/irqs.h
+++ b/arch/arm/plat-omap/include/plat/irqs.h
@@ -472,8 +472,22 @@
 #endif
 #define TWL4030_GPIO_IRQ_END    (TWL4030_GPIO_IRQ_BASE + TWL4030_GPIO_NR_IRQS)
 
+#define TWL6030_IRQ_BASE        (OMAP_FPGA_IRQ_END)
+#ifdef CONFIG_TWL4030_CORE
+#define TWL6030_BASE_NR_IRQS    20
+#else
+#define TWL6030_BASE_NR_IRQS    0
+#endif
+#define TWL6030_IRQ_END         (TWL6030_IRQ_BASE + TWL6030_BASE_NR_IRQS)
+
 /* Total number of interrupts depends on the enabled blocks above */
-#define NR_IRQS                 TWL4030_GPIO_IRQ_END
+#if (TWL4030_GPIO_IRQ_END > TWL6030_IRQ_END)
+#define TWL_IRQ_END             TWL4030_GPIO_IRQ_END
+#else
+#define TWL_IRQ_END             TWL6030_IRQ_END
+#endif
+
+#define NR_IRQS                 TWL_IRQ_END
 
 #define OMAP_IRQ_BIT(irq)       (1 << ((irq) % 32))
 
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index b23343cdc196..87829789243e 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -103,10 +103,10 @@ config MENELAUS
           cell phones and PDAs.
 
 config TWL4030_CORE
-        bool "Texas Instruments TWL4030/TPS659x0 Support"
+        bool "Texas Instruments TWL4030/TWL5030/TWL6030/TPS659x0 Support"
         depends on I2C=y && GENERIC_HARDIRQS
         help
-          Say yes here if you have TWL4030 family chip on your board.
+          Say yes here if you have TWL4030 / TWL6030 family chip on your board.
           This core driver provides register access and IRQ handling
           facilities, and registers devices for the various functions
           so that function-specific drivers can bind to them.
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index f4d14b7589bf..ca2f2c4ff05e 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -26,7 +26,7 @@ obj-$(CONFIG_MFD_WM8350_I2C)	+= wm8350-i2c.o
 obj-$(CONFIG_TPS65010)          += tps65010.o
 obj-$(CONFIG_MENELAUS)          += menelaus.o
 
-obj-$(CONFIG_TWL4030_CORE)      += twl-core.o twl4030-irq.o
+obj-$(CONFIG_TWL4030_CORE)      += twl-core.o twl4030-irq.o twl6030-irq.o
 obj-$(CONFIG_TWL4030_POWER)    += twl4030-power.o
 obj-$(CONFIG_TWL4030_CODEC)     += twl4030-codec.o
 
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 79946fe800af..c48a6138c575 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -181,6 +181,30 @@
 /* Triton Core internal information (END) */
 
 
+/* subchip/slave 0 0x48 - POWER */
+#define TWL6030_BASEADD_RTC             0x0000
+#define TWL6030_BASEADD_MEM             0x0017
+#define TWL6030_BASEADD_PM_MASTER       0x001F
+#define TWL6030_BASEADD_PM_SLAVE_MISC   0x0030 /* PM_RECEIVER */
+#define TWL6030_BASEADD_PM_MISC         0x00E2
+#define TWL6030_BASEADD_PM_PUPD         0x00F0
+
+/* subchip/slave 1 0x49 - FEATURE */
+#define TWL6030_BASEADD_USB             0x0000
+#define TWL6030_BASEADD_GPADC_CTRL      0x002E
+#define TWL6030_BASEADD_AUX             0x0090
+#define TWL6030_BASEADD_PWM             0x00BA
+#define TWL6030_BASEADD_GASGAUGE        0x00C0
+#define TWL6030_BASEADD_PIH             0x00D0
+#define TWL6030_BASEADD_CHARGER         0x00E0
+
+/* subchip/slave 2 0x4A - DFT */
+#define TWL6030_BASEADD_DIEID           0x00C0
+
+/* subchip/slave 3 0x4B - AUDIO */
+#define TWL6030_BASEADD_AUDIO           0x0000
+#define TWL6030_BASEADD_RSV             0x0000
+
 /* Few power values */
 #define R_CFG_BOOT                      0x05
 #define R_PROTECT_KEY                   0x0E
@@ -202,13 +226,21 @@
 #define TWL4030_VAUX2           BIT(0)  /* pre-5030 voltage ranges */
 #define TPS_SUBSET              BIT(1)  /* tps659[23]0 have fewer LDOs */
 #define TWL5031                 BIT(2)  /* twl5031 has different registers */
+#define TWL6030_CLASS           BIT(3)  /* TWL6030 class */
 
 /*----------------------------------------------------------------------*/
 
 /* is driver active, bound to a chip? */
 static bool inuse;
 
-/* Structure for each TWL4030 Slave */
+static unsigned int twl_id;
+unsigned int twl_rev(void)
+{
+        return twl_id;
+}
+EXPORT_SYMBOL(twl_rev);
+
+/* Structure for each TWL4030/TWL6030 Slave */
 struct twl_client {
         struct i2c_client *client;
         u8 address;
@@ -228,11 +260,12 @@ struct twl_mapping {
         unsigned char sid;      /* Slave ID */
         unsigned char base;     /* base address */
 };
+struct twl_mapping *twl_map;
 
 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
         /*
          * NOTE:  don't change this table without updating the
-         * <linux/i2c/twl4030.h> defines for TWL4030_MODULE_*
+         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
          * so they continue to match the order in this table.
          */
 
@@ -265,6 +298,40 @@ static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
         { 3, TWL4030_BASEADD_SECURED_REG },
 };
 
+static struct twl_mapping twl6030_map[] = {
+        /*
+         * NOTE:  don't change this table without updating the
+         * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
+         * so they continue to match the order in this table.
+         */
+        { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
+        { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
+
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+
+        { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
+        { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
+        { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
+        { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
+        { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
+
+        { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
+        { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
+};
+
 /*----------------------------------------------------------------------*/