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OMAP2+: VC: support PMICs with separate voltage and command registers 

The VC layer can support PMICs with separate voltage and command
registers by putting the different registers in the PRM_VC_SMPS_VOL_RA
and PRCM_VC_SMPS_CMD_RA registers respectively.

The PMIC data must supply at least a voltage register address
(volt_reg_addr).  The command register address (cmd_reg_addr) is
optional.  If the PMIC data does not supply a separate command
register address, the VC will use the voltage register address for both.

Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Kevin Hilman 2011-03-22 14:12:37 -07:00
parent 01f48d308d
commit e74e44054f
3 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/mach-omap2/omap_twl.c
View File

@ -158,7 +158,7 @@ static struct omap_volt_pmic_info omap3_mpu_volt_info = {
.vp_vddmax = OMAP3430_VP1_VLIMITTO_VDDMAX,
.vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
.pmic_reg = OMAP3_VDD_MPU_SR_CONTROL_REG,
.volt_reg_addr = OMAP3_VDD_MPU_SR_CONTROL_REG,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
@ -178,7 +178,7 @@ static struct omap_volt_pmic_info omap3_core_volt_info = {
.vp_vddmax = OMAP3430_VP2_VLIMITTO_VDDMAX,
.vp_timeout_us = OMAP3_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP3_SRI2C_SLAVE_ADDR,
.pmic_reg = OMAP3_VDD_CORE_SR_CONTROL_REG,
.volt_reg_addr = OMAP3_VDD_CORE_SR_CONTROL_REG,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
@ -198,7 +198,7 @@ static struct omap_volt_pmic_info omap4_mpu_volt_info = {
.vp_vddmax = OMAP4_VP_MPU_VLIMITTO_VDDMAX,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.pmic_reg = OMAP4_VDD_MPU_SR_VOLT_REG,
.volt_reg_addr = OMAP4_VDD_MPU_SR_VOLT_REG,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
@ -218,7 +218,7 @@ static struct omap_volt_pmic_info omap4_iva_volt_info = {
.vp_vddmax = OMAP4_VP_IVA_VLIMITTO_VDDMAX,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.pmic_reg = OMAP4_VDD_IVA_SR_VOLT_REG,
.volt_reg_addr = OMAP4_VDD_IVA_SR_VOLT_REG,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
@ -238,7 +238,7 @@ static struct omap_volt_pmic_info omap4_core_volt_info = {
.vp_vddmax = OMAP4_VP_CORE_VLIMITTO_VDDMAX,
.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
.i2c_slave_addr = OMAP4_SRI2C_SLAVE_ADDR,
.pmic_reg = OMAP4_VDD_CORE_SR_VOLT_REG,
.volt_reg_addr = OMAP4_VDD_CORE_SR_VOLT_REG,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};

4
arch/arm/mach-omap2/vc.c
View File

@ -115,7 +115,7 @@ int omap_vc_bypass_scale(struct voltagedomain *voltdm,
vc_valid = vc->common->valid;
vc_bypass_val_reg = vc->common->bypass_val_reg;
vc_bypass_value = (target_vsel << vc->common->data_shift) |
(vdd->pmic_info->pmic_reg <<
(vdd->pmic_info->volt_reg_addr <<
vc->common->regaddr_shift) |
(vdd->pmic_info->i2c_slave_addr <<
vc->common->slaveaddr_shift);
@ -264,7 +264,7 @@ void __init omap_vc_init_channel(struct voltagedomain *voltdm)
vc_val = vdd->read_reg(vc->common->prm_mod,
vc->common->smps_volra_reg);
vc_val &= ~vc->smps_volra_mask;
vc_val |= vdd->pmic_info->pmic_reg << vc->smps_volra_shift;
vc_val |= vdd->pmic_info->volt_reg_addr << vc->smps_volra_shift;
vdd->write_reg(vc_val, vc->common->prm_mod,
vc->common->smps_volra_reg);

5
arch/arm/mach-omap2/voltage.h
View File

@ -96,6 +96,8 @@ struct omap_volt_data {
* @step_size: PMIC voltage step size (in uv)
* @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
*/
struct omap_volt_pmic_info {
int slew_rate;
@ -112,7 +114,8 @@ struct omap_volt_pmic_info {
u8 vp_vddmax;
u8 vp_timeout_us;
u8 i2c_slave_addr;
u8 pmic_reg;
u8 volt_reg_addr;
u8 cmd_reg_addr;
unsigned long (*vsel_to_uv) (const u8 vsel);
u8 (*uv_to_vsel) (unsigned long uV);
};