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Diffstat (limited to 'arch/arm/mach-omap2/omap_twl.c')
-rw-r--r--arch/arm/mach-omap2/omap_twl.c209
1 files changed, 62 insertions, 147 deletions
diff --git a/arch/arm/mach-omap2/omap_twl.c b/arch/arm/mach-omap2/omap_twl.c
index 07d6140baa9..6bf62670055 100644
--- a/arch/arm/mach-omap2/omap_twl.c
+++ b/arch/arm/mach-omap2/omap_twl.c
@@ -18,6 +18,7 @@
#include <linux/kernel.h>
#include <linux/i2c/twl.h>
+#include "soc.h"
#include "voltage.h"
#include "pm.h"
@@ -30,44 +31,23 @@
#define OMAP3_VP_VSTEPMAX_VSTEPMAX 0x04
#define OMAP3_VP_VLIMITTO_TIMEOUT_US 200
-#define OMAP3430_VP1_VLIMITTO_VDDMIN 0x14
-#define OMAP3430_VP1_VLIMITTO_VDDMAX 0x42
-#define OMAP3430_VP2_VLIMITTO_VDDMIN 0x18
-#define OMAP3430_VP2_VLIMITTO_VDDMAX 0x2c
-
-#define OMAP3630_VP1_VLIMITTO_VDDMIN 0x18
-#define OMAP3630_VP1_VLIMITTO_VDDMAX 0x3c
-#define OMAP3630_VP2_VLIMITTO_VDDMIN 0x18
-#define OMAP3630_VP2_VLIMITTO_VDDMAX 0x30
-
#define OMAP4_SRI2C_SLAVE_ADDR 0x12
#define OMAP4_VDD_MPU_SR_VOLT_REG 0x55
+#define OMAP4_VDD_MPU_SR_CMD_REG 0x56
#define OMAP4_VDD_IVA_SR_VOLT_REG 0x5B
+#define OMAP4_VDD_IVA_SR_CMD_REG 0x5C
#define OMAP4_VDD_CORE_SR_VOLT_REG 0x61
+#define OMAP4_VDD_CORE_SR_CMD_REG 0x62
#define OMAP4_VP_CONFIG_ERROROFFSET 0x00
#define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01
#define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04
#define OMAP4_VP_VLIMITTO_TIMEOUT_US 200
-#define OMAP4_VP_MPU_VLIMITTO_VDDMIN 0xA
-#define OMAP4_VP_MPU_VLIMITTO_VDDMAX 0x39
-#define OMAP4_VP_IVA_VLIMITTO_VDDMIN 0xA
-#define OMAP4_VP_IVA_VLIMITTO_VDDMAX 0x2D
-#define OMAP4_VP_CORE_VLIMITTO_VDDMIN 0xA
-#define OMAP4_VP_CORE_VLIMITTO_VDDMAX 0x28
-
static bool is_offset_valid;
static u8 smps_offset;
-/*
- * Flag to ensure Smartreflex bit in TWL
- * being cleared in board file is not overwritten.
- */
-static bool __initdata twl_sr_enable_autoinit;
-#define TWL4030_DCDC_GLOBAL_CFG 0x06
#define REG_SMPS_OFFSET 0xE0
-#define SMARTREFLEX_ENABLE BIT(3)
static unsigned long twl4030_vsel_to_uv(const u8 vsel)
{
@@ -95,6 +75,8 @@ static unsigned long twl6030_vsel_to_uv(const u8 vsel)
is_offset_valid = true;
}
+ if (!vsel)
+ return 0;
/*
* There is no specific formula for voltage to vsel
* conversion above 1.3V. There are special hardcoded
@@ -106,9 +88,9 @@ static unsigned long twl6030_vsel_to_uv(const u8 vsel)
return 1350000;
if (smps_offset & 0x8)
- return ((((vsel - 1) * 125) + 7000)) * 100;
+ return ((((vsel - 1) * 1266) + 70900)) * 10;
else
- return ((((vsel - 1) * 125) + 6000)) * 100;
+ return ((((vsel - 1) * 1266) + 60770)) * 10;
}
static u8 twl6030_uv_to_vsel(unsigned long uv)
@@ -127,6 +109,8 @@ static u8 twl6030_uv_to_vsel(unsigned long uv)
is_offset_valid = true;
}
+ if (!uv)
+ return 0x00;
/*
* There is no specific formula for voltage to vsel
* conversion above 1.3V. There are special hardcoded
@@ -134,111 +118,102 @@ static u8 twl6030_uv_to_vsel(unsigned long uv)
* hardcoding only for 1.35 V which is used for 1GH OPP for
* OMAP4430.
*/
- if (uv == 1350000)
+ if (uv > twl6030_vsel_to_uv(0x39)) {
+ if (uv == 1350000)
+ return 0x3A;
+ pr_err("%s:OUT OF RANGE! non mapped vsel for %ld Vs max %ld\n",
+ __func__, uv, twl6030_vsel_to_uv(0x39));
return 0x3A;
+ }
if (smps_offset & 0x8)
- return DIV_ROUND_UP(uv - 700000, 12500) + 1;
+ return DIV_ROUND_UP(uv - 709000, 12660) + 1;
else
- return DIV_ROUND_UP(uv - 600000, 12500) + 1;
+ return DIV_ROUND_UP(uv - 607700, 12660) + 1;
}
-static struct omap_volt_pmic_info omap3_mpu_volt_info = {
+static struct omap_voltdm_pmic omap3_mpu_pmic = {
.slew_rate = 4000,
.step_size = 12500,
- .on_volt = 1200000,
- .onlp_volt = 1000000,
- .ret_volt = 975000,
- .off_volt = 600000,
- .volt_setup_time = 0xfff,
.vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
- .vp_vddmin = OMAP3430_VP1_VLIMITTO_VDDMIN,
- .vp_vddmax = OMAP3430_VP1_VLIMITTO_VDDMAX,
+ .vddmin = 600000,
+ .vddmax = 1450000,
.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,
+ .i2c_high_speed = true,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
-static struct omap_volt_pmic_info omap3_core_volt_info = {
+static struct omap_voltdm_pmic omap3_core_pmic = {
.slew_rate = 4000,
.step_size = 12500,
- .on_volt = 1200000,
- .onlp_volt = 1000000,
- .ret_volt = 975000,
- .off_volt = 600000,
- .volt_setup_time = 0xfff,
.vp_erroroffset = OMAP3_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP3_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP3_VP_VSTEPMAX_VSTEPMAX,
- .vp_vddmin = OMAP3430_VP2_VLIMITTO_VDDMIN,
- .vp_vddmax = OMAP3430_VP2_VLIMITTO_VDDMAX,
+ .vddmin = 600000,
+ .vddmax = 1450000,
.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,
+ .i2c_high_speed = true,
.vsel_to_uv = twl4030_vsel_to_uv,
.uv_to_vsel = twl4030_uv_to_vsel,
};
-static struct omap_volt_pmic_info omap4_mpu_volt_info = {
+static struct omap_voltdm_pmic omap4_mpu_pmic = {
.slew_rate = 4000,
- .step_size = 12500,
- .on_volt = 1350000,
- .onlp_volt = 1350000,
- .ret_volt = 837500,
- .off_volt = 600000,
- .volt_setup_time = 0,
+ .step_size = 12660,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
- .vp_vddmin = OMAP4_VP_MPU_VLIMITTO_VDDMIN,
- .vp_vddmax = OMAP4_VP_MPU_VLIMITTO_VDDMAX,
+ .vddmin = 0,
+ .vddmax = 2100000,
.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,
+ .cmd_reg_addr = OMAP4_VDD_MPU_SR_CMD_REG,
+ .i2c_high_speed = true,
+ .i2c_pad_load = 3,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
-static struct omap_volt_pmic_info omap4_iva_volt_info = {
+static struct omap_voltdm_pmic omap4_iva_pmic = {
.slew_rate = 4000,
- .step_size = 12500,
- .on_volt = 1100000,
- .onlp_volt = 1100000,
- .ret_volt = 837500,
- .off_volt = 600000,
- .volt_setup_time = 0,
+ .step_size = 12660,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
- .vp_vddmin = OMAP4_VP_IVA_VLIMITTO_VDDMIN,
- .vp_vddmax = OMAP4_VP_IVA_VLIMITTO_VDDMAX,
+ .vddmin = 0,
+ .vddmax = 2100000,
.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,
+ .cmd_reg_addr = OMAP4_VDD_IVA_SR_CMD_REG,
+ .i2c_high_speed = true,
+ .i2c_pad_load = 3,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
-static struct omap_volt_pmic_info omap4_core_volt_info = {
+static struct omap_voltdm_pmic omap4_core_pmic = {
.slew_rate = 4000,
- .step_size = 12500,
- .on_volt = 1100000,
- .onlp_volt = 1100000,
- .ret_volt = 837500,
- .off_volt = 600000,
- .volt_setup_time = 0,
+ .step_size = 12660,
.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
- .vp_vddmin = OMAP4_VP_CORE_VLIMITTO_VDDMIN,
- .vp_vddmax = OMAP4_VP_CORE_VLIMITTO_VDDMAX,
+ .vddmin = 0,
+ .vddmax = 2100000,
.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,
+ .cmd_reg_addr = OMAP4_VDD_CORE_SR_CMD_REG,
+ .i2c_high_speed = true,
+ .i2c_pad_load = 3,
.vsel_to_uv = twl6030_vsel_to_uv,
.uv_to_vsel = twl6030_uv_to_vsel,
};
@@ -250,14 +225,14 @@ int __init omap4_twl_init(void)
if (!cpu_is_omap44xx())
return -ENODEV;
- voltdm = omap_voltage_domain_lookup("mpu");
- omap_voltage_register_pmic(voltdm, &omap4_mpu_volt_info);
+ voltdm = voltdm_lookup("mpu");
+ omap_voltage_register_pmic(voltdm, &omap4_mpu_pmic);
- voltdm = omap_voltage_domain_lookup("iva");
- omap_voltage_register_pmic(voltdm, &omap4_iva_volt_info);
+ voltdm = voltdm_lookup("iva");
+ omap_voltage_register_pmic(voltdm, &omap4_iva_pmic);
- voltdm = omap_voltage_domain_lookup("core");
- omap_voltage_register_pmic(voltdm, &omap4_core_volt_info);
+ voltdm = voltdm_lookup("core");
+ omap_voltage_register_pmic(voltdm, &omap4_core_pmic);
return 0;
}
@@ -269,71 +244,11 @@ int __init omap3_twl_init(void)
if (!cpu_is_omap34xx())
return -ENODEV;
- if (cpu_is_omap3630()) {
- omap3_mpu_volt_info.vp_vddmin = OMAP3630_VP1_VLIMITTO_VDDMIN;
- omap3_mpu_volt_info.vp_vddmax = OMAP3630_VP1_VLIMITTO_VDDMAX;
- omap3_core_volt_info.vp_vddmin = OMAP3630_VP2_VLIMITTO_VDDMIN;
- omap3_core_volt_info.vp_vddmax = OMAP3630_VP2_VLIMITTO_VDDMAX;
- }
-
- /*
- * The smartreflex bit on twl4030 specifies if the setting of voltage
- * is done over the I2C_SR path. Since this setting is independent of
- * the actual usage of smartreflex AVS module, we enable TWL SR bit
- * by default irrespective of whether smartreflex AVS module is enabled
- * on the OMAP side or not. This is because without this bit enabled,
- * the voltage scaling through vp forceupdate/bypass mechanism of
- * voltage scaling will not function on TWL over I2C_SR.
- */
- if (!twl_sr_enable_autoinit)
- omap3_twl_set_sr_bit(true);
+ voltdm = voltdm_lookup("mpu_iva");
+ omap_voltage_register_pmic(voltdm, &omap3_mpu_pmic);
- voltdm = omap_voltage_domain_lookup("mpu");
- omap_voltage_register_pmic(voltdm, &omap3_mpu_volt_info);
-
- voltdm = omap_voltage_domain_lookup("core");
- omap_voltage_register_pmic(voltdm, &omap3_core_volt_info);
+ voltdm = voltdm_lookup("core");
+ omap_voltage_register_pmic(voltdm, &omap3_core_pmic);
return 0;
}
-
-/**
- * omap3_twl_set_sr_bit() - Set/Clear SR bit on TWL
- * @enable: enable SR mode in twl or not
- *
- * If 'enable' is true, enables Smartreflex bit on TWL 4030 to make sure
- * voltage scaling through OMAP SR works. Else, the smartreflex bit
- * on twl4030 is cleared as there are platforms which use OMAP3 and T2 but
- * use Synchronized Scaling Hardware Strategy (ENABLE_VMODE=1) and Direct
- * Strategy Software Scaling Mode (ENABLE_VMODE=0), for setting the voltages,
- * in those scenarios this bit is to be cleared (enable = false).
- *
- * Returns 0 on success, error is returned if I2C read/write fails.
- */
-int __init omap3_twl_set_sr_bit(bool enable)
-{
- u8 temp;
- int ret;
- if (twl_sr_enable_autoinit)
- pr_warning("%s: unexpected multiple calls\n", __func__);
-
- ret = twl_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &temp,
- TWL4030_DCDC_GLOBAL_CFG);
- if (ret)
- goto err;
-
- if (enable)
- temp |= SMARTREFLEX_ENABLE;
- else
- temp &= ~SMARTREFLEX_ENABLE;
-
- ret = twl_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, temp,
- TWL4030_DCDC_GLOBAL_CFG);
- if (!ret) {
- twl_sr_enable_autoinit = true;
- return 0;
- }
-err:
- pr_err("%s: Error access to TWL4030 (%d)\n", __func__, ret);
- return ret;
-}
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