regulator: initialization for ab8500 regulators

The regulators on the AB8500 have a lot of custom
hardware control settings pertaining to 8 external
signals, settings which are board-specific and need
be provided from the platform at startup.

Initialization added for regulators Vana, VextSupply1,
VextSupply2, VextSupply3, Vaux1, Vaux2, Vaux3, VTVout,
Vintcore12, Vaudio, Vdmic, Vamic1, Vamic2, VrefDDR.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

diff --git a/arch/arm/mach-ux500/board-mop500-regulators.h b/arch/arm/mach-ux500/board-mop500-regulators.h
index 2675fae..f979b89 100644 (file)
--- a/arch/arm/mach-ux500/board-mop500-regulators.h
+++ b/arch/arm/mach-ux500/board-mop500-regulators.h
@@ -14,6 +14,8 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/ab8500.h>
 
+extern struct ab8500_regulator_reg_init
+ab8500_regulator_reg_init[AB8500_NUM_REGULATOR_REGISTERS];
 extern struct regulator_init_data ab8500_regulators[AB8500_NUM_REGULATORS];
 
 #endif

diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index 8790d98..d007645 100644 (file)
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -20,6 +20,7 @@
 #include <linux/amba/serial.h>
 #include <linux/spi/spi.h>
 #include <linux/mfd/ab8500.h>
+#include <linux/regulator/ab8500.h>
 #include <linux/mfd/tc3589x.h>
 #include <linux/leds-lp5521.h>
 #include <linux/input.h>

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 5a77630..d157146 100644 (file)
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -526,6 +526,186 @@ static struct ab8500_regulator_info
 
 };
 
+struct ab8500_reg_init {
+       u8 bank;
+       u8 addr;
+       u8 mask;
+};
+
+#define REG_INIT(_id, _bank, _addr, _mask)     \
+       [_id] = {                               \
+               .bank = _bank,                  \
+               .addr = _addr,                  \
+               .mask = _mask,                  \
+       }
+
+static struct ab8500_reg_init ab8500_reg_init[] = {
+       /*
+        * 0x30, VanaRequestCtrl
+        * 0x0C, VpllRequestCtrl
+        * 0xc0, VextSupply1RequestCtrl
+        */
+       REG_INIT(AB8500_REGUREQUESTCTRL2,       0x03, 0x04, 0xfc),
+       /*
+        * 0x03, VextSupply2RequestCtrl
+        * 0x0c, VextSupply3RequestCtrl
+        * 0x30, Vaux1RequestCtrl
+        * 0xc0, Vaux2RequestCtrl
+        */
+       REG_INIT(AB8500_REGUREQUESTCTRL3,       0x03, 0x05, 0xff),
+       /*
+        * 0x03, Vaux3RequestCtrl
+        * 0x04, SwHPReq
+        */
+       REG_INIT(AB8500_REGUREQUESTCTRL4,       0x03, 0x06, 0x07),
+       /*
+        * 0x08, VanaSysClkReq1HPValid
+        * 0x20, Vaux1SysClkReq1HPValid
+        * 0x40, Vaux2SysClkReq1HPValid
+        * 0x80, Vaux3SysClkReq1HPValid
+        */
+       REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
+       /*
+        * 0x10, VextSupply1SysClkReq1HPValid
+        * 0x20, VextSupply2SysClkReq1HPValid
+        * 0x40, VextSupply3SysClkReq1HPValid
+        */
+       REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
+       /*
+        * 0x08, VanaHwHPReq1Valid
+        * 0x20, Vaux1HwHPReq1Valid
+        * 0x40, Vaux2HwHPReq1Valid
+        * 0x80, Vaux3HwHPReq1Valid
+        */
+       REG_INIT(AB8500_REGUHWHPREQ1VALID1,     0x03, 0x09, 0xe8),
+       /*
+        * 0x01, VextSupply1HwHPReq1Valid
+        * 0x02, VextSupply2HwHPReq1Valid
+        * 0x04, VextSupply3HwHPReq1Valid
+        */
+       REG_INIT(AB8500_REGUHWHPREQ1VALID2,     0x03, 0x0a, 0x07),
+       /*
+        * 0x08, VanaHwHPReq2Valid
+        * 0x20, Vaux1HwHPReq2Valid
+        * 0x40, Vaux2HwHPReq2Valid
+        * 0x80, Vaux3HwHPReq2Valid
+        */
+       REG_INIT(AB8500_REGUHWHPREQ2VALID1,     0x03, 0x0b, 0xe8),
+       /*
+        * 0x01, VextSupply1HwHPReq2Valid
+        * 0x02, VextSupply2HwHPReq2Valid
+        * 0x04, VextSupply3HwHPReq2Valid
+        */
+       REG_INIT(AB8500_REGUHWHPREQ2VALID2,     0x03, 0x0c, 0x07),
+       /*
+        * 0x20, VanaSwHPReqValid
+        * 0x80, Vaux1SwHPReqValid
+        */
+       REG_INIT(AB8500_REGUSWHPREQVALID1,      0x03, 0x0d, 0xa0),
+       /*
+        * 0x01, Vaux2SwHPReqValid
+        * 0x02, Vaux3SwHPReqValid
+        * 0x04, VextSupply1SwHPReqValid
+        * 0x08, VextSupply2SwHPReqValid
+        * 0x10, VextSupply3SwHPReqValid
+        */
+       REG_INIT(AB8500_REGUSWHPREQVALID2,      0x03, 0x0e, 0x1f),
+       /*
+        * 0x02, SysClkReq2Valid1
+        * ...
+        * 0x80, SysClkReq8Valid1
+        */
+       REG_INIT(AB8500_REGUSYSCLKREQVALID1,    0x03, 0x0f, 0xfe),
+       /*
+        * 0x02, SysClkReq2Valid2
+        * ...
+        * 0x80, SysClkReq8Valid2
+        */
+       REG_INIT(AB8500_REGUSYSCLKREQVALID2,    0x03, 0x10, 0xfe),
+       /*
+        * 0x02, VTVoutEna
+        * 0x04, Vintcore12Ena
+        * 0x38, Vintcore12Sel
+        * 0x40, Vintcore12LP
+        * 0x80, VTVoutLP
+        */
+       REG_INIT(AB8500_REGUMISC1,              0x03, 0x80, 0xfe),
+       /*
+        * 0x02, VaudioEna
+        * 0x04, VdmicEna
+        * 0x08, Vamic1Ena
+        * 0x10, Vamic2Ena
+        */
+       REG_INIT(AB8500_VAUDIOSUPPLY,           0x03, 0x83, 0x1e),
+       /*
+        * 0x01, Vamic1_dzout
+        * 0x02, Vamic2_dzout
+        */
+       REG_INIT(AB8500_REGUCTRL1VAMIC,         0x03, 0x84, 0x03),
+       /*
+        * 0x0c, VanaRegu
+        * 0x03, VpllRegu
+        */
+       REG_INIT(AB8500_VPLLVANAREGU,           0x04, 0x06, 0x0f),
+       /*
+        * 0x01, VrefDDREna
+        * 0x02, VrefDDRSleepMode
+        */
+       REG_INIT(AB8500_VREFDDR,                0x04, 0x07, 0x03),
+       /*
+        * 0x03, VextSupply1Regu
+        * 0x0c, VextSupply2Regu
+        * 0x30, VextSupply3Regu
+        * 0x40, ExtSupply2Bypass
+        * 0x80, ExtSupply3Bypass
+        */
+       REG_INIT(AB8500_EXTSUPPLYREGU,          0x04, 0x08, 0xff),
+       /*
+        * 0x03, Vaux1Regu
+        * 0x0c, Vaux2Regu
+        */
+       REG_INIT(AB8500_VAUX12REGU,             0x04, 0x09, 0x0f),
+       /*
+        * 0x03, Vaux3Regu
+        */
+       REG_INIT(AB8500_VRF1VAUX3REGU,          0x04, 0x0a, 0x03),
+       /*
+        * 0x3f, Vsmps1Sel1
+        */
+       REG_INIT(AB8500_VSMPS1SEL1,             0x04, 0x13, 0x3f),
+       /*
+        * 0x0f, Vaux1Sel
+        */
+       REG_INIT(AB8500_VAUX1SEL,               0x04, 0x1f, 0x0f),
+       /*
+        * 0x0f, Vaux2Sel
+        */
+       REG_INIT(AB8500_VAUX2SEL,               0x04, 0x20, 0x0f),
+       /*
+        * 0x07, Vaux3Sel
+        */
+       REG_INIT(AB8500_VRF1VAUX3SEL,           0x04, 0x21, 0x07),
+       /*
+        * 0x01, VextSupply12LP
+        */
+       REG_INIT(AB8500_REGUCTRL2SPARE,         0x04, 0x22, 0x01),
+       /*
+        * 0x04, Vaux1Disch
+        * 0x08, Vaux2Disch
+        * 0x10, Vaux3Disch
+        * 0x20, Vintcore12Disch
+        * 0x40, VTVoutDisch
+        * 0x80, VaudioDisch
+        */
+       REG_INIT(AB8500_REGUCTRLDISCH,          0x04, 0x43, 0xfc),
+       /*
+        * 0x02, VanaDisch
+        * 0x04, VdmicPullDownEna
+        * 0x10, VdmicDisch
+        */
+       REG_INIT(AB8500_REGUCTRLDISCH2,         0x04, 0x44, 0x16),
+};
+
 static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
 {
        struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
@@ -544,10 +724,51 @@ static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
 
        /* make sure the platform data has the correct size */
        if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
-               dev_err(&pdev->dev, "platform configuration error\n");
+               dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
                return -EINVAL;
        }
 
+       /* initialize registers */
+       for (i = 0; i < pdata->num_regulator_reg_init; i++) {
+               int id;
+               u8 value;
+
+               id = pdata->regulator_reg_init[i].id;
+               value = pdata->regulator_reg_init[i].value;
+
+               /* check for configuration errors */
+               if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
+                       dev_err(&pdev->dev,
+                               "Configuration error: id outside range.\n");
+                       return -EINVAL;
+               }
+               if (value & ~ab8500_reg_init[id].mask) {
+                       dev_err(&pdev->dev,
+                               "Configuration error: value outside mask.\n");
+                       return -EINVAL;
+               }
+
+               /* initialize register */
+               err = abx500_mask_and_set_register_interruptible(&pdev->dev,
+                       ab8500_reg_init[id].bank,
+                       ab8500_reg_init[id].addr,
+                       ab8500_reg_init[id].mask,
+                       value);
+               if (err < 0) {
+                       dev_err(&pdev->dev,
+                               "Failed to initialize 0x%02x, 0x%02x.\n",
+                               ab8500_reg_init[id].bank,
+                               ab8500_reg_init[id].addr);
+                       return err;
+               }
+               dev_vdbg(&pdev->dev,
+                       "  init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
+                       ab8500_reg_init[id].bank,
+                       ab8500_reg_init[id].addr,
+                       ab8500_reg_init[id].mask,
+                       value);
+       }
+
        /* register all regulators */
        for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
                struct ab8500_regulator_info *info = NULL;

diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h
index 56f8dea..6e4f77e 100644 (file)
--- a/include/linux/mfd/ab8500.h
+++ b/include/linux/mfd/ab8500.h
@@ -139,17 +139,23 @@ struct ab8500 {
        u8 oldmask[AB8500_NUM_IRQ_REGS];
 };
 
+struct regulator_reg_init;
 struct regulator_init_data;
 
 /**
  * struct ab8500_platform_data - AB8500 platform data
  * @irq_base: start of AB8500 IRQs, AB8500_NR_IRQS will be used
  * @init: board-specific initialization after detection of ab8500
+ * @num_regulator_reg_init: number of regulator init registers
+ * @regulator_reg_init: regulator init registers
+ * @num_regulator: number of regulators
  * @regulator: machine-specific constraints for regulators
  */
 struct ab8500_platform_data {
        int irq_base;
        void (*init) (struct ab8500 *);
+       int num_regulator_reg_init;
+       struct ab8500_regulator_reg_init *regulator_reg_init;
        int num_regulator;
        struct regulator_init_data *regulator;
 };

diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index d4eacde..76579f9 100644 (file)
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -3,8 +3,8 @@
  *
  * License Terms: GNU General Public License v2
  *
- * Author: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
- *
+ * Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
+ *          Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
  */
 
 #ifndef __LINUX_MFD_AB8500_REGULATOR_H
@@ -25,4 +25,50 @@ enum ab8500_regulator_id {
        AB8500_LDO_ANA,
        AB8500_NUM_REGULATORS,
 };
+
+/* AB8500 register initialization */
+struct ab8500_regulator_reg_init {
+       int id;
+       u8 value;
+};
+
+#define INIT_REGULATOR_REGISTER(_id, _value)   \
+       {                                       \
+               .id = _id,                      \
+               .value = _value,                \
+       }
+
+/* AB8500 registers */
+enum ab8500_regulator_reg {
+       AB8500_REGUREQUESTCTRL2,
+       AB8500_REGUREQUESTCTRL3,
+       AB8500_REGUREQUESTCTRL4,
+       AB8500_REGUSYSCLKREQ1HPVALID1,
+       AB8500_REGUSYSCLKREQ1HPVALID2,
+       AB8500_REGUHWHPREQ1VALID1,
+       AB8500_REGUHWHPREQ1VALID2,
+       AB8500_REGUHWHPREQ2VALID1,
+       AB8500_REGUHWHPREQ2VALID2,
+       AB8500_REGUSWHPREQVALID1,
+       AB8500_REGUSWHPREQVALID2,
+       AB8500_REGUSYSCLKREQVALID1,
+       AB8500_REGUSYSCLKREQVALID2,
+       AB8500_REGUMISC1,
+       AB8500_VAUDIOSUPPLY,
+       AB8500_REGUCTRL1VAMIC,
+       AB8500_VPLLVANAREGU,
+       AB8500_VREFDDR,
+       AB8500_EXTSUPPLYREGU,
+       AB8500_VAUX12REGU,
+       AB8500_VRF1VAUX3REGU,
+       AB8500_VAUX1SEL,
+       AB8500_VAUX2SEL,
+       AB8500_VRF1VAUX3SEL,
+       AB8500_REGUCTRL2SPARE,
+       AB8500_REGUCTRLDISCH,
+       AB8500_REGUCTRLDISCH2,
+       AB8500_VSMPS1SEL1,
+       AB8500_NUM_REGULATOR_REGISTERS,
+};
+
 #endif