diff options
author | Axel Lin <axel.lin@gmail.com> | 2012-03-13 02:40:48 +0400 |
---|---|---|
committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-03-14 03:19:34 +0400 |
commit | 42b5efe4f9aa40b3b0a20149fd7357d9d6c96959 (patch) | |
tree | 7282449043edf9ef4bd22efdc5068126063d9448 | |
parent | 585993932ccc44ab6a8c6dc590a2f3d6b2facb41 (diff) | |
download | linux-42b5efe4f9aa40b3b0a20149fd7357d9d6c96959.tar.xz |
regulator: tps65912: Use simple equations to get register address
The address of ctrl and sel registers can be calculated by simple equations.
This patch simplifies the implementation in tps65912_get_ctrl_register and
implements tps65912_get_sel_register to replace tps65912_get_dcdc_sel_register
and tps65912_get_ldo_sel_register.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r-- | drivers/regulator/tps65912-regulator.c | 162 |
1 files changed, 18 insertions, 144 deletions
diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c index 3ab1722c78b7..ede688b1a56f 100644 --- a/drivers/regulator/tps65912-regulator.c +++ b/drivers/regulator/tps65912-regulator.c @@ -201,146 +201,30 @@ static unsigned long tps65912_vsel_to_uv_ldo(u8 vsel) static int tps65912_get_ctrl_register(int id) { - switch (id) { - case TPS65912_REG_DCDC1: - return TPS65912_DCDC1_AVS; - case TPS65912_REG_DCDC2: - return TPS65912_DCDC2_AVS; - case TPS65912_REG_DCDC3: - return TPS65912_DCDC3_AVS; - case TPS65912_REG_DCDC4: - return TPS65912_DCDC4_AVS; - case TPS65912_REG_LDO1: - return TPS65912_LDO1_AVS; - case TPS65912_REG_LDO2: - return TPS65912_LDO2_AVS; - case TPS65912_REG_LDO3: - return TPS65912_LDO3_AVS; - case TPS65912_REG_LDO4: - return TPS65912_LDO4_AVS; - case TPS65912_REG_LDO5: - return TPS65912_LDO5; - case TPS65912_REG_LDO6: - return TPS65912_LDO6; - case TPS65912_REG_LDO7: - return TPS65912_LDO7; - case TPS65912_REG_LDO8: - return TPS65912_LDO8; - case TPS65912_REG_LDO9: - return TPS65912_LDO9; - case TPS65912_REG_LDO10: - return TPS65912_LDO10; - default: + if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4) + return id * 3 + TPS65912_DCDC1_AVS; + else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10) + return id - TPS65912_REG_LDO5 + TPS65912_LDO5; + else return -EINVAL; - } } -static int tps65912_get_dcdc_sel_register(struct tps65912_reg *pmic, int id) +static int tps65912_get_sel_register(struct tps65912_reg *pmic, int id) { struct tps65912 *mfd = pmic->mfd; - int opvsel = 0, sr = 0; + int opvsel; u8 reg = 0; - if (id < TPS65912_REG_DCDC1 || id > TPS65912_REG_DCDC4) - return -EINVAL; - - switch (id) { - case TPS65912_REG_DCDC1: - opvsel = tps65912_reg_read(mfd, TPS65912_DCDC1_OP); - sr = ((opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT); - if (sr) - reg = TPS65912_DCDC1_AVS; + if (id >= TPS65912_REG_DCDC1 && id <= TPS65912_REG_LDO4) { + opvsel = tps65912_reg_read(mfd, id * 3 + TPS65912_DCDC1_OP); + if (opvsel & OP_SELREG_MASK) + reg = id * 3 + TPS65912_DCDC1_AVS; else - reg = TPS65912_DCDC1_OP; - break; - case TPS65912_REG_DCDC2: - opvsel = tps65912_reg_read(mfd, TPS65912_DCDC2_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_DCDC2_AVS; - else - reg = TPS65912_DCDC2_OP; - break; - case TPS65912_REG_DCDC3: - opvsel = tps65912_reg_read(mfd, TPS65912_DCDC3_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_DCDC3_AVS; - else - reg = TPS65912_DCDC3_OP; - break; - case TPS65912_REG_DCDC4: - opvsel = tps65912_reg_read(mfd, TPS65912_DCDC4_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_DCDC4_AVS; - else - reg = TPS65912_DCDC4_OP; - break; - } - return reg; -} - -static int tps65912_get_ldo_sel_register(struct tps65912_reg *pmic, int id) -{ - struct tps65912 *mfd = pmic->mfd; - int opvsel = 0, sr = 0; - u8 reg = 0; - - if (id < TPS65912_REG_LDO1 || id > TPS65912_REG_LDO10) + reg = id * 3 + TPS65912_DCDC1_OP; + } else if (id >= TPS65912_REG_LDO5 && id <= TPS65912_REG_LDO10) { + reg = id - TPS65912_REG_LDO5 + TPS65912_LDO5; + } else { return -EINVAL; - - switch (id) { - case TPS65912_REG_LDO1: - opvsel = tps65912_reg_read(mfd, TPS65912_LDO1_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_LDO1_AVS; - else - reg = TPS65912_LDO1_OP; - break; - case TPS65912_REG_LDO2: - opvsel = tps65912_reg_read(mfd, TPS65912_LDO2_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_LDO2_AVS; - else - reg = TPS65912_LDO2_OP; - break; - case TPS65912_REG_LDO3: - opvsel = tps65912_reg_read(mfd, TPS65912_LDO3_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_LDO3_AVS; - else - reg = TPS65912_LDO3_OP; - break; - case TPS65912_REG_LDO4: - opvsel = tps65912_reg_read(mfd, TPS65912_LDO4_OP); - sr = (opvsel & OP_SELREG_MASK) >> OP_SELREG_SHIFT; - if (sr) - reg = TPS65912_LDO4_AVS; - else - reg = TPS65912_LDO4_OP; - break; - case TPS65912_REG_LDO5: - reg = TPS65912_LDO5; - break; - case TPS65912_REG_LDO6: - reg = TPS65912_LDO6; - break; - case TPS65912_REG_LDO7: - reg = TPS65912_LDO7; - break; - case TPS65912_REG_LDO8: - reg = TPS65912_LDO8; - break; - case TPS65912_REG_LDO9: - reg = TPS65912_LDO9; - break; - case TPS65912_REG_LDO10: - reg = TPS65912_LDO10; - break; } return reg; @@ -567,7 +451,7 @@ static int tps65912_set_voltage_dcdc_sel(struct regulator_dev *dev, int value; u8 reg; - reg = tps65912_get_dcdc_sel_register(pmic, id); + reg = tps65912_get_sel_register(pmic, id); value = tps65912_reg_read(mfd, reg); value &= 0xC0; return tps65912_reg_write(mfd, reg, selector | value); @@ -581,7 +465,7 @@ static int tps65912_get_voltage_ldo(struct regulator_dev *dev) int vsel = 0; u8 reg; - reg = tps65912_get_ldo_sel_register(pmic, id); + reg = tps65912_get_sel_register(pmic, id); vsel = tps65912_reg_read(mfd, reg); vsel &= 0x3F; @@ -595,7 +479,7 @@ static int tps65912_set_voltage_ldo_sel(struct regulator_dev *dev, struct tps65912 *mfd = pmic->mfd; int id = rdev_get_id(dev), reg, value; - reg = tps65912_get_ldo_sel_register(pmic, id); + reg = tps65912_get_sel_register(pmic, id); value = tps65912_reg_read(mfd, reg); value &= 0xC0; return tps65912_reg_write(mfd, reg, selector | value); @@ -718,22 +602,12 @@ static struct platform_driver tps65912_driver = { .remove = __devexit_p(tps65912_remove), }; -/** - * tps65912_init - * - * Module init function - */ static int __init tps65912_init(void) { return platform_driver_register(&tps65912_driver); } subsys_initcall(tps65912_init); -/** - * tps65912_cleanup - * - * Module exit function - */ static void __exit tps65912_cleanup(void) { platform_driver_unregister(&tps65912_driver); |