mfd: TWL5030 version checking in twl-core

Added API to get the TWL5030 Si version from the IDCODE register.
It is used for enabling the workaround for TWL erratum 27.

Signed-off-by: Lesly A M <leslyam@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: David Derrick <dderrick@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 4ebd7c32bc59..314218e79c4a 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -150,7 +150,12 @@
 #define MMC_PU                          (0x1 << 3)
 #define MMC_PD                          (0x1 << 2)
 
-
+#define TWL_SIL_TYPE(rev)               ((rev) & 0x00FFFFFF)
+#define TWL_SIL_REV(rev)                ((rev) >> 24)
+#define TWL_SIL_5030                    0x09002F
+#define TWL5030_REV_1_0                 0x00
+#define TWL5030_REV_1_1                 0x10
+#define TWL5030_REV_1_2                 0x30
 
 #define TWL4030_CLASS_ID                0x4030
 #define TWL6030_CLASS_ID                0x6030
@@ -180,6 +185,9 @@ int twl_i2c_read_u8(u8 mod_no, u8 *val, u8 reg);
 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
 
+int twl_get_type(void);
+int twl_get_version(void);
+
 int twl6030_interrupt_unmask(u8 bit_mask, u8 offset);
 int twl6030_interrupt_mask(u8 bit_mask, u8 offset);
 
@@ -279,7 +287,12 @@ static inline int twl6030_mmc_card_detect(struct device *dev, int slot)
  *(Use TWL_4030_MODULE_INTBR)
  */
 
+#define REG_IDCODE_7_0                  0x00
+#define REG_IDCODE_15_8                 0x01
+#define REG_IDCODE_16_23                0x02
+#define REG_IDCODE_31_24                0x03
 #define REG_GPPUPDCTR1                  0x0F
+#define REG_UNLOCK_TEST_REG             0x12
 
 /*I2C1 and I2C4(SR) SDA/SCL pull-up control bits */
 
@@ -288,6 +301,8 @@ static inline int twl6030_mmc_card_detect(struct device *dev, int slot)
 #define SR_I2C_SCL_CTRL_PU              BIT(4)
 #define SR_I2C_SDA_CTRL_PU              BIT(6)
 
+#define TWL_EEPROM_R_UNLOCK             0x49
+
 /*----------------------------------------------------------------------*/
 
 /*