regulator Added regulator for sysclkreq and connected BT and WLANu8500-android-2.3_v0.48

ST-Ericsson Linux next: -
ST-Ericsson ID: ER 324615
ST-Ericsson FOSS-OUT ID: Trivial

Change-Id: I616eda9d8e292c05dd8094d8085f5b488ee90396
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/19533
Reviewed-by: Par-Gunnar HJALMDAHL <par-gunnar.p.hjalmdahl@stericsson.com>
Reviewed-by: Yvan FILLION <yvan.fillion@stericsson.com>
Tested-by: Yvan FILLION <yvan.fillion@stericsson.com>
Reviewed-by: Henrik CARLING <henrik.carling@stericsson.com>

7 files changed, 296 insertions, 52 deletions

diff --git a/arch/arm/mach-ux500/board-mop500-regulators.c b/arch/arm/mach-ux500/board-mop500-regulators.c
index 40ddd4745a7..7e742dc40f4 100644
--- a/arch/arm/mach-ux500/board-mop500-regulators.c
+++ b/arch/arm/mach-ux500/board-mop500-regulators.c
@@ -260,7 +260,7 @@ static struct regulator_consumer_supply ab8500_vana_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.10",
+		.dev_name = "reg-virt-consumer.9",
 		.supply = "ana",
 	},
 #endif
@@ -474,6 +474,34 @@ static struct regulator_consumer_supply ab8500_vintcore_consumers[] = {
 
 };
 
+/* supply for CG2900 */
+static struct regulator_consumer_supply ab8500_sysclkreq_2_consumers[] = {
+	{
+		.dev_name = "cg2900-uart.0",
+		.supply = "gbf_1v8",
+	},
+#ifdef CONFIG_U8500_REGULATOR_DEBUG
+	{
+		.dev_name = "reg-virt-consumer.10",
+		.supply = "sysclkreq-2",
+	},
+#endif
+};
+
+/* supply for CW1200 */
+static struct regulator_consumer_supply ab8500_sysclkreq_4_consumers[] = {
+	{
+		.dev_name = "cw1200",
+		.supply = "wlan_1v8",
+	},
+#ifdef CONFIG_U8500_REGULATOR_DEBUG
+	{
+		.dev_name = "reg-virt-consumer.11",
+		.supply = "sysclkreq-4",
+	},
+#endif
+};
+
 /*
  * AB8500 regulators
  */
@@ -581,6 +609,26 @@ struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS] = {
 		.num_consumer_supplies = ARRAY_SIZE(ab8500_vana_consumers),
 		.consumer_supplies = ab8500_vana_consumers,
 	},
+	/* sysclkreq 2 pin */
+	[AB8500_SYSCLKREQ_2] = {
+		.constraints = {
+			.name = "ab8500-sysclkreq-2",
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies =
+			ARRAY_SIZE(ab8500_sysclkreq_2_consumers),
+		.consumer_supplies = ab8500_sysclkreq_2_consumers,
+	},
+	/* sysclkreq 4 pin */
+	[AB8500_SYSCLKREQ_4] = {
+		.constraints = {
+			.name = "ab8500-sysclkreq-4",
+			.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+		},
+		.num_consumer_supplies =
+			ARRAY_SIZE(ab8500_sysclkreq_4_consumers),
+		.consumer_supplies = ab8500_sysclkreq_4_consumers,
+	},
 };
 
 /*
@@ -652,7 +700,7 @@ static struct regulator_consumer_supply u8500_vape_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.10",
+		.dev_name = "reg-virt-consumer.12",
 		.supply = "test",
 	},
 #endif
@@ -678,7 +726,7 @@ struct regulator_init_data u8500_vape_regulator = {
 static struct regulator_consumer_supply u8500_varm_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.11",
+		.dev_name = "reg-virt-consumer.13",
 		.supply = "test",
 	},
 #endif
@@ -697,7 +745,7 @@ struct regulator_init_data u8500_varm_regulator = {
 static struct regulator_consumer_supply u8500_vmodem_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.12",
+		.dev_name = "reg-virt-consumer.14",
 		.supply = "test",
 	},
 #endif
@@ -716,7 +764,7 @@ struct regulator_init_data u8500_vmodem_regulator = {
 static struct regulator_consumer_supply u8500_vpll_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.13",
+		.dev_name = "reg-virt-consumer.15",
 		.supply = "test",
 	},
 #endif
@@ -735,7 +783,7 @@ struct regulator_init_data u8500_vpll_regulator = {
 static struct regulator_consumer_supply u8500_vsmps1_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.14",
+		.dev_name = "reg-virt-consumer.16",
 		.supply = "test",
 	},
 #endif
@@ -753,14 +801,6 @@ struct regulator_init_data u8500_vsmps1_regulator = {
 /* vsmsp2 regulator configuration */
 static struct regulator_consumer_supply u8500_vsmps2_consumers[] = {
 	{
-		.dev_name = "cg2900-uart.0",
-		.supply = "gbf_1v8",
-	},
-	{
-		.dev_name = "cw1200",
-		.supply = "wlan_1v8",
-	},
-	{
 		.dev_name = "ab8500-usb.0",
 		.supply = "musb_1v8",
 	},
@@ -770,7 +810,7 @@ static struct regulator_consumer_supply u8500_vsmps2_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.15",
+		.dev_name = "reg-virt-consumer.17",
 		.supply = "test",
 	},
 #endif
@@ -789,7 +829,7 @@ struct regulator_init_data u8500_vsmps2_regulator = {
 static struct regulator_consumer_supply u8500_vsmps3_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.16",
+		.dev_name = "reg-virt-consumer.18",
 		.supply = "test",
 	},
 #endif
@@ -808,7 +848,7 @@ struct regulator_init_data u8500_vsmps3_regulator = {
 static struct regulator_consumer_supply u8500_vrf1_consumers[] = {
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.17",
+		.dev_name = "reg-virt-consumer.19",
 		.supply = "test",
 	},
 #endif
@@ -839,7 +879,7 @@ static struct regulator_consumer_supply u8500_svammdsp_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.18",
+		.dev_name = "reg-virt-consumer.20",
 		.supply = "test",
 	},
 #endif
@@ -863,7 +903,7 @@ static struct regulator_consumer_supply u8500_svammdspret_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.19",
+		.dev_name = "reg-virt-consumer.21",
 		.supply = "test",
 	},
 #endif
@@ -891,7 +931,7 @@ static struct regulator_consumer_supply u8500_svapipe_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.20",
+		.dev_name = "reg-virt-consumer.22",
 		.supply = "test",
 	},
 #endif
@@ -919,7 +959,7 @@ static struct regulator_consumer_supply u8500_siammdsp_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.21",
+		.dev_name = "reg-virt-consumer.23",
 		.supply = "test",
 	},
 #endif
@@ -943,7 +983,7 @@ static struct regulator_consumer_supply u8500_siammdspret_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.22",
+		.dev_name = "reg-virt-consumer.24",
 		.supply = "test",
 	},
 #endif
@@ -971,7 +1011,7 @@ static struct regulator_consumer_supply u8500_siapipe_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.23",
+		.dev_name = "reg-virt-consumer.25",
 		.supply = "test",
 	},
 #endif
@@ -1003,7 +1043,7 @@ static struct regulator_consumer_supply u8500_sga_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.24",
+		.dev_name = "reg-virt-consumer.26",
 		.supply = "test",
 	},
 #endif
@@ -1039,7 +1079,7 @@ static struct regulator_consumer_supply u8500_b2r2_mcde_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.25",
+		.dev_name = "reg-virt-consumer.27",
 		.supply = "test",
 	},
 #endif
@@ -1071,7 +1111,7 @@ static struct regulator_consumer_supply u8500_esram12_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.26",
+		.dev_name = "reg-virt-consumer.28",
 		.supply = "test",
 	},
 #endif
@@ -1099,7 +1139,7 @@ static struct regulator_consumer_supply u8500_esram12ret_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.27",
+		.dev_name = "reg-virt-consumer.29",
 		.supply = "test",
 	},
 #endif
@@ -1134,7 +1174,7 @@ static struct regulator_consumer_supply u8500_esram34_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.28",
+		.dev_name = "reg-virt-consumer.30",
 		.supply = "test",
 	},
 #endif
@@ -1162,7 +1202,7 @@ static struct regulator_consumer_supply u8500_esram34ret_consumers[] = {
 	},
 #ifdef CONFIG_U8500_REGULATOR_DEBUG
 	{
-		.dev_name = "reg-virt-consumer.29",
+		.dev_name = "reg-virt-consumer.31",
 		.supply = "test",
 	},
 #endif
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 7abdb59f6ae..215b033380f 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -767,7 +767,9 @@ static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
 	 * register. This is the array of 7 configuration settings.
 	 * One has to compile time decide these settings. Below is the
 	 * explaination of these setting
-	 * GpioSel1 = 0x02 => Pin GPIO2 (SysClkReq3) is configured as GPIO
+	 * GpioSel1 = 0x07 => Pin GPIO1 (SysClkReq2)
+	 *                    Pin GPIO2 (SysClkReq3)
+	 *                    Pin GPIO3 (SysClkReq4) are configured as GPIO
 	 * GpioSel2 = 0x1E => Pins GPIO10 to GPIO13 are configured as GPIO
 	 * GpioSel3 = 0x80 => Pin GPIO24 is configured as GPIO
 	 * GpioSel4 = 0x01 => Pin GPIo25 is configured as GPIO
@@ -776,7 +778,7 @@ static struct ab8500_gpio_platform_data ab8500_gpio_pdata = {
 	 * AlternaFunction = 0x00 => If Pins GPIO10 to 13 are not configured
 	 * as GPIO then this register selectes the alternate fucntions
 	 */
-	.config_reg		= {0x02, 0x1E, 0x80, 0x01,
+	.config_reg		= {0x07, 0x1E, 0x80, 0x01,
 					0x7A, 0x02, 0x00},
 };
 #endif
diff --git a/arch/arm/mach-ux500/virt-regulator-u8500.c b/arch/arm/mach-ux500/virt-regulator-u8500.c
index d02d30ec9aa..4915a4cf636 100644
--- a/arch/arm/mach-ux500/virt-regulator-u8500.c
+++ b/arch/arm/mach-ux500/virt-regulator-u8500.c
@@ -96,12 +96,28 @@ static struct platform_device u8500_ana_virtual_regulator_device = {
 	},
 };
 
+static struct platform_device u8500_sysclkreq_2_virtual_regulator_device = {
+	.name = "reg-virt-consumer",
+	.id = 10,
+	.dev = {
+		.platform_data = "sysclkreq-2",
+	},
+};
+
+static struct platform_device u8500_sysclkreq_4_virtual_regulator_device = {
+	.name = "reg-virt-consumer",
+	.id = 11,
+	.dev = {
+		.platform_data = "sysclkreq-4",
+	},
+};
+
 /*
  * Configuration for other U8500 virtual regulators
  */
 static struct platform_device u8500_ape_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 10,
+	.id = 12,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -109,7 +125,7 @@ static struct platform_device u8500_ape_virtual_regulator_device = {
 
 static struct platform_device u8500_arm_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 11,
+	.id = 13,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -117,7 +133,7 @@ static struct platform_device u8500_arm_virtual_regulator_device = {
 
 static struct platform_device u8500_modem_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 12,
+	.id = 14,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -125,7 +141,7 @@ static struct platform_device u8500_modem_virtual_regulator_device = {
 
 static struct platform_device u8500_pll_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 13,
+	.id = 15,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -133,7 +149,7 @@ static struct platform_device u8500_pll_virtual_regulator_device = {
 
 static struct platform_device u8500_smps1_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 14,
+	.id = 16,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -141,7 +157,7 @@ static struct platform_device u8500_smps1_virtual_regulator_device = {
 
 static struct platform_device u8500_smps2_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 15,
+	.id = 17,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -149,7 +165,7 @@ static struct platform_device u8500_smps2_virtual_regulator_device = {
 
 static struct platform_device u8500_smps3_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 16,
+	.id = 18,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -157,7 +173,7 @@ static struct platform_device u8500_smps3_virtual_regulator_device = {
 
 static struct platform_device u8500_rf1_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 17,
+	.id = 19,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -168,7 +184,7 @@ static struct platform_device u8500_rf1_virtual_regulator_device = {
  */
 static struct platform_device u8500_sva_mmdsp_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 18,
+	.id = 20,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -176,7 +192,7 @@ static struct platform_device u8500_sva_mmdsp_virtual_regulator_device = {
 
 static struct platform_device u8500_sva_mmdsp_ret_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 19,
+	.id = 21,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -184,7 +200,7 @@ static struct platform_device u8500_sva_mmdsp_ret_virtual_regulator_device = {
 
 static struct platform_device u8500_sva_pipe_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 20,
+	.id = 22,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -192,7 +208,7 @@ static struct platform_device u8500_sva_pipe_virtual_regulator_device = {
 
 static struct platform_device u8500_sia_mmdsp_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 21,
+	.id = 23,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -200,7 +216,7 @@ static struct platform_device u8500_sia_mmdsp_virtual_regulator_device = {
 
 static struct platform_device u8500_sia_mmdsp_ret_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 22,
+	.id = 24,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -208,7 +224,7 @@ static struct platform_device u8500_sia_mmdsp_ret_virtual_regulator_device = {
 
 static struct platform_device u8500_sia_pipe_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 23,
+	.id = 25,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -216,7 +232,7 @@ static struct platform_device u8500_sia_pipe_virtual_regulator_device = {
 
 static struct platform_device u8500_sga_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 24,
+	.id = 26,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -224,7 +240,7 @@ static struct platform_device u8500_sga_virtual_regulator_device = {
 
 static struct platform_device u8500_b2r2_mcde_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 25,
+	.id = 27,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -232,7 +248,7 @@ static struct platform_device u8500_b2r2_mcde_virtual_regulator_device = {
 
 static struct platform_device u8500_esram12_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 26,
+	.id = 28,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -240,7 +256,7 @@ static struct platform_device u8500_esram12_virtual_regulator_device = {
 
 static struct platform_device u8500_esram12_ret_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 27,
+	.id = 29,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -248,7 +264,7 @@ static struct platform_device u8500_esram12_ret_virtual_regulator_device = {
 
 static struct platform_device u8500_esram34_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 28,
+	.id = 30,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -256,7 +272,7 @@ static struct platform_device u8500_esram34_virtual_regulator_device = {
 
 static struct platform_device u8500_esram34_ret_virtual_regulator_device = {
 	.name = "reg-virt-consumer",
-	.id = 29,
+	.id = 31,
 	.dev = {
 		.platform_data = "test",
 	},
@@ -273,6 +289,8 @@ static struct platform_device *u8500_virtual_regulator_devices[] = {
 	&u8500_anamic2_virtual_regulator_device,
 	&u8500_dmic_virtual_regulator_device,
 	&u8500_ana_virtual_regulator_device,
+	&u8500_sysclkreq_2_virtual_regulator_device,
+	&u8500_sysclkreq_4_virtual_regulator_device,
 	&u8500_ape_virtual_regulator_device,
 	&u8500_arm_virtual_regulator_device,
 	&u8500_modem_virtual_regulator_device,
diff --git a/drivers/gpio/ab8500-gpio.c b/drivers/gpio/ab8500-gpio.c
index e276bea49b9..262151a7400 100644
--- a/drivers/gpio/ab8500-gpio.c
+++ b/drivers/gpio/ab8500-gpio.c
@@ -506,6 +506,69 @@ int ab8500_config_pull_up_or_down(struct device *dev,
 }
 EXPORT_SYMBOL(ab8500_config_pull_up_or_down);
 
+/*
+ * ab8500_gpio_config_select()
+ *
+ * Configure functionality of pin, either specific use or GPIO.
+ * @dev: device pointer
+ * @gpio: gpio number
+ * @gpio_select: true if the pin should be used as GPIO
+ */
+int ab8500_gpio_config_select(struct device *dev,
+			      unsigned gpio, bool gpio_select)
+{
+	u8 offset = gpio - AB8500_PIN_GPIO1;
+	u8 reg = AB8500_GPIO_SEL1_REG + (offset / 8);
+	u8 pos = offset % 8;
+	u8 val = gpio_select ? 1 : 0;
+	int ret;
+
+	ret = abx500_mask_and_set_register_interruptible(dev,
+		AB8500_MISC, reg, 1 << pos, val << pos);
+	if (ret < 0)
+		dev_err(dev, "%s write failed\n", __func__);
+
+	dev_vdbg(dev, "%s (bank, addr, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+		__func__, AB8500_MISC, reg, 1 << pos, val << pos);
+
+	return ret;
+}
+
+/*
+ * ab8500_gpio_config_get_select()
+ *
+ * Configure functionality of pin, either specific use or GPIO.
+ * @dev: device pointer
+ * @gpio: gpio number
+ * @gpio_select: pointer to pin selection status
+ */
+int ab8500_gpio_config_get_select(struct device *dev,
+				  unsigned gpio, bool *gpio_select)
+{
+	u8 offset =  gpio - AB8500_PIN_GPIO1;
+	u8 reg = AB8500_GPIO_SEL1_REG + (offset / 8);
+	u8 pos = offset % 8;
+	u8 val;
+	int ret;
+
+	ret = abx500_get_register_interruptible(dev,
+				AB8500_MISC, reg, &val);
+	if (ret < 0) {
+		dev_err(dev, "%s read failed\n", __func__);
+		return ret;
+	}
+
+	if (val & (1 << pos))
+		*gpio_select = true;
+	else
+		*gpio_select = false;
+
+	dev_vdbg(dev, "%s (bank, addr, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
+		__func__, AB8500_MISC, reg, 1 << pos, val);
+
+	return 0;
+}
+
 static struct platform_driver ab8500_gpio_driver = {
 	.driver = {
 		.name = "ab8500-gpio",
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index d4d8c641378..6cc76430824 100644
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -21,6 +21,8 @@
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/ab8500.h>
+#include <linux/mfd/ab8500/ab8500-gpio.h> /* for sysclkreq pins */
+#include <mach/gpio.h> /* for sysclkreq pins */
 
 /**
  * struct ab8500_regulator_info - ab8500 regulator information
@@ -40,6 +42,7 @@
  * @voltages: supported voltage table
  * @voltages_len: number of supported voltages for the regulator
  * @delay: startup delay in ms
+ * @gpio_pin: gpio pin number (for sysclkreq regulator only)
  */
 struct ab8500_regulator_info {
 	struct device		*dev;
@@ -58,6 +61,7 @@ struct ab8500_regulator_info {
 	int const *voltages;
 	int voltages_len;
 	unsigned int delay;
+	unsigned int gpio_pin;
 };
 
 /* voltage tables for the vauxn/vintcore supplies */
@@ -325,6 +329,88 @@ static struct regulator_ops ab8500_regulator_fixed_ops = {
 	.list_voltage	= ab8500_list_voltage,
 };
 
+static int ab8500_sysclkreq_enable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = ab8500_gpio_config_select(info->dev, info->gpio_pin, false);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't set sysclkreq pin selection\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		"%s-enable (gpio_pin, gpio_select): %i, false\n",
+		info->desc.name, info->gpio_pin);
+
+	return ret;
+}
+
+static int ab8500_sysclkreq_disable(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = ab8500_gpio_config_select(info->dev, info->gpio_pin, true);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't set gpio pin selection\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		"%s-disable (gpio_pin, gpio_select): %i, true\n",
+		info->desc.name, info->gpio_pin);
+
+	return ret;
+}
+
+static int ab8500_sysclkreq_is_enabled(struct regulator_dev *rdev)
+{
+	int ret;
+	struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
+	bool gpio_select;
+
+	if (info == NULL) {
+		dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
+		return -EINVAL;
+	}
+
+	ret = ab8500_gpio_config_get_select(info->dev, info->gpio_pin,
+		&gpio_select);
+	if (ret < 0) {
+		dev_err(rdev_get_dev(rdev),
+			"couldn't read gpio pin selection\n");
+		return ret;
+	}
+
+	dev_vdbg(rdev_get_dev(rdev),
+		"%s-is_enabled (gpio_pin, is_enabled): %i, %i\n",
+		info->desc.name, info->gpio_pin, !gpio_select);
+
+	return !gpio_select;
+}
+
+static struct regulator_ops ab8500_sysclkreq_ops = {
+	.enable		= ab8500_sysclkreq_enable,
+	.disable	= ab8500_sysclkreq_disable,
+	.is_enabled	= ab8500_sysclkreq_is_enabled,
+	.get_voltage	= ab8500_fixed_get_voltage,
+	.list_voltage	= ab8500_list_voltage,
+};
+
 static struct ab8500_regulator_info
 		ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
 	/*
@@ -510,7 +596,33 @@ static struct ab8500_regulator_info
 		.update_val_enable	= 0x04,
 	},
 
-
+	/*
+	 * SysClkReq regulators
+	 */
+	[AB8500_SYSCLKREQ_2] = {
+		.desc = {
+			.name		= "SYSCLKREQ-2",
+			.ops		= &ab8500_sysclkreq_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_SYSCLKREQ_2,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.fixed_uV		= 1, /* bogus value */
+		.gpio_pin		= AB8500_PIN_GPIO1,
+	},
+	[AB8500_SYSCLKREQ_4] = {
+		.desc = {
+			.name		= "SYSCLKREQ-4",
+			.ops		= &ab8500_sysclkreq_ops,
+			.type		= REGULATOR_VOLTAGE,
+			.id		= AB8500_SYSCLKREQ_4,
+			.owner		= THIS_MODULE,
+			.n_voltages	= 1,
+		},
+		.fixed_uV		= 1, /* bogus value */
+		.gpio_pin		= AB8500_PIN_GPIO3,
+	},
 };
 
 struct ab8500_reg_init {
diff --git a/include/linux/mfd/ab8500/ab8500-gpio.h b/include/linux/mfd/ab8500/ab8500-gpio.h
index 472de6a2ee2..abb407cd57f 100644
--- a/include/linux/mfd/ab8500/ab8500-gpio.h
+++ b/include/linux/mfd/ab8500/ab8500-gpio.h
@@ -20,4 +20,11 @@ struct ab8500_gpio_platform_data {
 
 int ab8500_config_pull_up_or_down(struct device *dev,
 				unsigned gpio, bool enable);
+
+int ab8500_gpio_config_select(struct device *dev,
+			      unsigned gpio, bool gpio_select);
+
+int ab8500_gpio_config_get_select(struct device *dev,
+				  unsigned gpio, bool *gpio_select);
+
 #endif /* _AB8500_GPIO_H */
diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index 81573443588..cfc307d73ff 100644
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -22,6 +22,8 @@ enum ab8500_regulator_id {
 	AB8500_LDO_ANAMIC2,
 	AB8500_LDO_DMIC,
 	AB8500_LDO_ANA,
+	AB8500_SYSCLKREQ_2,
+	AB8500_SYSCLKREQ_4,
 	AB8500_NUM_REGULATORS,
 };