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Subject[PATCH 21/73] regulator: ab8500-ext: Add VextSupply2 regulator
Date
Remove suspend-force settings of VextSupply2 and
add VextSupply2 in the external regulator driver.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
arch/arm/mach-ux500/board-mop500-regulators.c | 63 ++++++++++++++++++++++++-
drivers/regulator/ab8500-ext.c | 18 +++++++
include/linux/regulator/ab8500.h | 1 +
3 files changed, 80 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c
index 38b70d7..5fd8a59 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.c
+++ b/arch/arm/mach-ux500/board-mop500-regulators.c
@@ -280,12 +280,12 @@ static struct ab8500_regulator_reg_init ab8500_reg_init[] = {
INIT_REGULATOR_REGISTER(AB8500_VREFDDR, 0x03, 0x00),
/*
* VextSupply1Regu = force LP
- * VextSupply2Regu = HW control
+ * VextSupply2Regu = force OFF
* VextSupply3Regu = force HP (-> STBB2=LP and TPS=LP)
* ExtSupply2Bypass = ExtSupply12LPn ball is 0 when Ena is 0
* ExtSupply3Bypass = ExtSupply3LPn ball is 0 when Ena is 0
*/
- INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x1b),
+ INIT_REGULATOR_REGISTER(AB8500_EXTSUPPLYREGU, 0xff, 0x13),
/*
* Vaux1Regu = force HP
* Vaux2Regu = force off
@@ -453,6 +453,11 @@ static struct regulator_consumer_supply ab8500_ext_supply3_consumers[] = {
REGULATOR_SUPPLY("vinvsim", "sim-detect.0"),
};

+/* extended configuration for VextSupply2, only used for HREFP_V20 boards */
+static struct ab8500_ext_regulator_cfg ab8500_ext_supply2 = {
+ .hwreq = true,
+};
+
/*
* AB8500 external regulators
*/
@@ -468,6 +473,14 @@ static struct regulator_init_data ab8500_ext_regulators[] = {
.always_on = 1,
},
},
+ /* fixed Vbat supplies VSMPS2_EXT_1V36 and VSMPS5_EXT_1V15 */
+ [AB8500_EXT_SUPPLY2] = {
+ .constraints = {
+ .name = "ab8500-ext-supply2",
+ .min_uV = 1360000,
+ .max_uV = 1360000,
+ },
+ },
/* fixed Vbat supplies VSMPS3_EXT_3V4 and VSMPS4_EXT_3V4 */
[AB8500_EXT_SUPPLY3] = {
.constraints = {
@@ -492,6 +505,24 @@ struct ab8500_regulator_platform_data ab8500_regulator_plat_data = {
.num_ext_regulator = ARRAY_SIZE(ab8500_ext_regulators),
};

+static void ab8500_modify_reg_init(int id, u8 mask, u8 value)
+{
+ int i;
+
+ for (i = ARRAY_SIZE(ab8500_reg_init) - 1; i >= 0; i--) {
+ if (ab8500_reg_init[i].id == id) {
+ u8 initval = ab8500_reg_init[i].value;
+ initval = (initval & ~mask) | (value & mask);
+ ab8500_reg_init[i].value = initval;
+
+ BUG_ON(mask & ~ab8500_reg_init[i].mask);
+ return;
+ }
+ }
+
+ BUG_ON(1);
+}
+
void mop500_regulator_init(void)
{
struct regulator_init_data *regulator;
@@ -506,4 +537,32 @@ void mop500_regulator_init(void)
regulator->constraints.state_mem.disabled = 1;
regulator->constraints.state_standby.disabled = 1;
}
+
+ /*
+ * Handle AB8500_EXT_SUPPLY2 on HREFP_V20_V50 boards (do it for
+ * all HREFP_V20 boards)
+ */
+ if (cpu_is_u8500v20()) {
+ /* VextSupply2RequestCtrl = HP/OFF depending on VxRequest */
+ ab8500_modify_reg_init(AB8500_REGUREQUESTCTRL3, 0x01, 0x01);
+
+ /* VextSupply2SysClkReq1HPValid = SysClkReq1 controlled */
+ ab8500_modify_reg_init(AB8500_REGUSYSCLKREQ1HPVALID2,
+ 0x20, 0x20);
+
+ /* VextSupply2 = force HP at initialization */
+ ab8500_modify_reg_init(AB8500_EXTSUPPLYREGU, 0x0c, 0x04);
+
+ /* enable VextSupply2 during platform active */
+ regulator = &ab8500_ext_regulators[AB8500_EXT_SUPPLY2];
+ regulator->constraints.always_on = 1;
+
+ /* disable VextSupply2 in suspend */
+ regulator = &ab8500_ext_regulators[AB8500_EXT_SUPPLY2];
+ regulator->constraints.state_mem.disabled = 1;
+ regulator->constraints.state_standby.disabled = 1;
+
+ /* enable VextSupply2 HW control (used in suspend) */
+ regulator->driver_data = (void *)&ab8500_ext_supply2;
+ }
}
diff --git a/drivers/regulator/ab8500-ext.c b/drivers/regulator/ab8500-ext.c
index a8fe1cb..3af40fd 100644
--- a/drivers/regulator/ab8500-ext.c
+++ b/drivers/regulator/ab8500-ext.c
@@ -318,6 +318,24 @@ static struct ab8500_ext_regulator_info
.update_val_lp = 0x03,
.update_val_hw = 0x02,
},
+ [AB8500_EXT_SUPPLY2] = {
+ .desc = {
+ .name = "VEXTSUPPLY2",
+ .ops = &ab8500_ext_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = AB8500_EXT_SUPPLY2,
+ .owner = THIS_MODULE,
+ .n_voltages = 1,
+ },
+ .fixed_uV = 1360000,
+ .update_bank = 0x04,
+ .update_reg = 0x08,
+ .update_mask = 0x0c,
+ .update_val = 0x04,
+ .update_val_hp = 0x04,
+ .update_val_lp = 0x0c,
+ .update_val_hw = 0x08,
+ },
[AB8500_EXT_SUPPLY3] = {
.desc = {
.name = "VEXTSUPPLY3",
diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index 33308ff..0a58db2 100644
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -161,6 +161,7 @@ struct ab8500_ext_regulator_cfg {

enum ab8500_ext_regulator_id {
AB8500_EXT_SUPPLY1,
+ AB8500_EXT_SUPPLY2,
AB8500_EXT_SUPPLY3,
AB8500_NUM_EXT_REGULATORS,
};
--
1.7.9.5


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