OMAP3+: VC: cleanup PMIC register address configuration

- support both voltage register address and command register address
  for each VC channel
- add fields for voltage register address (volra) and command register
  address (cmdra) to struct omap_vc_channel
- use VC/VP register access read/modify/write helper
- remove volra_shift field (use __ffs(mask) for shift value)
- I2C addresses 10-bit, change size to u16
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/vc.c

@@ -243,17 +243,24 @@ void __init omap_vc_init_channel(struct voltagedomain *voltdm)
 
 	/* get PMIC/board specific settings */
 	vc->i2c_slave_addr = vdd->pmic_info->i2c_slave_addr;
+	vc->volt_reg_addr = vdd->pmic_info->volt_reg_addr;
+	vc->cmd_reg_addr = vdd->pmic_info->cmd_reg_addr;
 
 	/* Configure the i2c slave address for this VC */
 	voltdm->rmw(vc->smps_sa_mask,
 		    vc->i2c_slave_addr << __ffs(vc->smps_sa_mask),
 		    vc->common->smps_sa_reg);
 
-	/* Setup the VOLRA(pmic reg addr) in VC */
-	vc_val = voltdm->read(vc->common->smps_volra_reg);
-	vc_val &= ~vc->smps_volra_mask;
-	vc_val |= vdd->pmic_info->volt_reg_addr << vc->smps_volra_shift;
-	voltdm->write(vc_val, vc->common->smps_volra_reg);
+	/*
+	 * Configure the PMIC register addresses.
+	 */
+	voltdm->rmw(vc->smps_volra_mask,
+		    vc->volt_reg_addr << __ffs(vc->smps_volra_mask),
+		    vc->common->smps_volra_reg);
+	if (vc->cmd_reg_addr)
+		voltdm->rmw(vc->smps_cmdra_mask,
+			    vc->cmd_reg_addr << __ffs(vc->smps_cmdra_mask),
+			    vc->common->smps_cmdra_reg);
 
 	/* Configure the setup times */
 	vc_val = voltdm->read(vdd->vfsm->voltsetup_reg);

arch/arm/mach-omap2/vc.h

@@ -27,6 +27,7 @@ struct voltagedomain;
  * @valid: VALID bitmask in PRM_VC_BYPASS_VAL register
  * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start
  * @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start
+ * @smps_cmdra_reg: Offset of PRM_VC_SMPS_CMD_RA reg from PRM start
  * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
  * @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register
  * @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register
@@ -44,6 +45,7 @@ struct omap_vc_common {
 	u32 valid;
 	u8 smps_sa_reg;
 	u8 smps_volra_reg;
+	u8 smps_cmdra_reg;
 	u8 bypass_val_reg;
 	u8 data_shift;
 	u8 slaveaddr_shift;
@@ -57,24 +59,26 @@ struct omap_vc_common {
 /**
  * struct omap_vc_channel - VC per-instance data
  * @i2c_slave_addr: I2C slave address of PMIC for this VC channel
+ * @volt_reg_addr: voltage configuration register address
+ * @cmd_reg_addr: command configuration register address
  * @common: pointer to VC common data for this platform
  * @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register
  * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register
- * @smps_volra_shift: VOLRA* field shift in the PRM_VC_VOL_RA register
- *
- * XXX It is not necessary to have both a *_mask and a *_shift -
- *     remove one
+ * @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register
+ * @cmdval_reg: register for on/ret/off voltage level values for this channel
  */
 struct omap_vc_channel {
 	/* channel state */
 	u16 i2c_slave_addr;
+	u16 volt_reg_addr;
+	u16 cmd_reg_addr;
 
 	/* register access data */
 	const struct omap_vc_common *common;
 	u32 smps_sa_mask;
 	u32 smps_volra_mask;
+	u32 smps_cmdra_mask;
 	u8 cmdval_reg;
-	u8 smps_volra_shift;
 };
 
 extern struct omap_vc_channel omap3_vc_mpu;

arch/arm/mach-omap2/vc3xxx_data.c

@@ -32,6 +32,7 @@
 static struct omap_vc_common omap3_vc_common = {
 	.smps_sa_reg	 = OMAP3_PRM_VC_SMPS_SA_OFFSET,
 	.smps_volra_reg	 = OMAP3_PRM_VC_SMPS_VOL_RA_OFFSET,
+	.smps_cmdra_reg	 = OMAP3_PRM_VC_SMPS_CMD_RA_OFFSET,
 	.bypass_val_reg	 = OMAP3_PRM_VC_BYPASS_VAL_OFFSET,
 	.data_shift	 = OMAP3430_DATA_SHIFT,
 	.slaveaddr_shift = OMAP3430_SLAVEADDR_SHIFT,
@@ -48,14 +49,14 @@ struct omap_vc_channel omap3_vc_mpu = {
 	.common = &omap3_vc_common,
 	.cmdval_reg = OMAP3_PRM_VC_CMD_VAL_0_OFFSET,
 	.smps_sa_mask = OMAP3430_PRM_VC_SMPS_SA_SA0_MASK,
-	.smps_volra_shift = OMAP3430_VOLRA0_SHIFT,
 	.smps_volra_mask = OMAP3430_VOLRA0_MASK,
+	.smps_cmdra_mask = OMAP3430_CMDRA0_MASK,
 };
 
 struct omap_vc_channel omap3_vc_core = {
 	.common = &omap3_vc_common,
 	.cmdval_reg = OMAP3_PRM_VC_CMD_VAL_1_OFFSET,
 	.smps_sa_mask = OMAP3430_PRM_VC_SMPS_SA_SA1_MASK,
-	.smps_volra_shift = OMAP3430_VOLRA1_SHIFT,
 	.smps_volra_mask = OMAP3430_VOLRA1_MASK,
+	.smps_cmdra_mask = OMAP3430_CMDRA1_MASK,
 };

arch/arm/mach-omap2/vc44xx_data.c

@@ -33,6 +33,7 @@
 static const struct omap_vc_common omap4_vc_common = {
 	.smps_sa_reg = OMAP4_PRM_VC_SMPS_SA_OFFSET,
 	.smps_volra_reg = OMAP4_PRM_VC_VAL_SMPS_RA_VOL_OFFSET,
+	.smps_cmdra_reg = OMAP4_PRM_VC_VAL_SMPS_RA_CMD_OFFSET,
 	.bypass_val_reg = OMAP4_PRM_VC_VAL_BYPASS_OFFSET,
 	.data_shift = OMAP4430_DATA_SHIFT,
 	.slaveaddr_shift = OMAP4430_SLAVEADDR_SHIFT,
@@ -50,23 +51,23 @@ struct omap_vc_channel omap4_vc_mpu = {
 	.common = &omap4_vc_common,
 	.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_MPU_L_OFFSET,
 	.smps_sa_mask = OMAP4430_SA_VDD_MPU_L_PRM_VC_SMPS_SA_MASK,
-	.smps_volra_shift = OMAP4430_VOLRA_VDD_MPU_L_SHIFT,
 	.smps_volra_mask = OMAP4430_VOLRA_VDD_MPU_L_MASK,
+	.smps_cmdra_mask = OMAP4430_CMDRA_VDD_MPU_L_MASK,
 };
 
 struct omap_vc_channel omap4_vc_iva = {
 	.common = &omap4_vc_common,
 	.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_IVA_L_OFFSET,
 	.smps_sa_mask = OMAP4430_SA_VDD_IVA_L_PRM_VC_SMPS_SA_MASK,
-	.smps_volra_shift = OMAP4430_VOLRA_VDD_IVA_L_SHIFT,
 	.smps_volra_mask = OMAP4430_VOLRA_VDD_IVA_L_MASK,
+	.smps_cmdra_mask = OMAP4430_CMDRA_VDD_IVA_L_MASK,
 };
 
 struct omap_vc_channel omap4_vc_core = {
 	.common = &omap4_vc_common,
 	.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_CORE_L_OFFSET,
 	.smps_sa_mask = OMAP4430_SA_VDD_CORE_L_0_6_MASK,
-	.smps_volra_shift = OMAP4430_VOLRA_VDD_CORE_L_SHIFT,
 	.smps_volra_mask = OMAP4430_VOLRA_VDD_CORE_L_MASK,
+	.smps_cmdra_mask = OMAP4430_CMDRA_VDD_CORE_L_MASK,
 };
 

arch/arm/mach-omap2/voltage.h

@@ -103,10 +103,10 @@ struct omap_volt_data {
  * @slew_rate:	PMIC slew rate (in uv/us)
  * @step_size:	PMIC voltage step size (in uv)
  * @i2c_slave_addr: I2C slave address of PMIC
- * @vsel_to_uv:	PMIC API to convert vsel value to actual voltage in uV.
- * @uv_to_vsel:	PMIC API to convert voltage in uV to vsel value.
  * @volt_reg_addr: voltage configuration register address
  * @cmd_reg_addr: command (on, on-LP, ret, off) configuration register address
+ * @vsel_to_uv:	PMIC API to convert vsel value to actual voltage in uV.
+ * @uv_to_vsel:	PMIC API to convert voltage in uV to vsel value.
  */
 struct omap_volt_pmic_info {
 	int slew_rate;
@@ -117,14 +117,14 @@ struct omap_volt_pmic_info {
 	u32 off_volt;
 	u16 volt_setup_time;
 	u16 i2c_slave_addr;
+	u16 volt_reg_addr;
+	u16 cmd_reg_addr;
 	u8 vp_erroroffset;
 	u8 vp_vstepmin;
 	u8 vp_vstepmax;
 	u8 vp_vddmin;
 	u8 vp_vddmax;
 	u8 vp_timeout_us;
-	u8 volt_reg_addr;
-	u8 cmd_reg_addr;
 	unsigned long (*vsel_to_uv) (const u8 vsel);
 	u8 (*uv_to_vsel) (unsigned long uV);
 };