diff options
Diffstat (limited to 'drivers/mfd/da9052-core.c')
| -rw-r--r-- | drivers/mfd/da9052-core.c | 382 |
1 files changed, 134 insertions, 248 deletions
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c index 5ddde2a9176..e8af816d73a 100644 --- a/drivers/mfd/da9052-core.c +++ b/drivers/mfd/da9052-core.c @@ -15,8 +15,6 @@ #include <linux/delay.h> #include <linux/input.h> #include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/mutex.h> #include <linux/mfd/core.h> #include <linux/slab.h> #include <linux/module.h> @@ -25,16 +23,6 @@ #include <linux/mfd/da9052/pdata.h> #include <linux/mfd/da9052/reg.h> -#define DA9052_NUM_IRQ_REGS 4 -#define DA9052_IRQ_MASK_POS_1 0x01 -#define DA9052_IRQ_MASK_POS_2 0x02 -#define DA9052_IRQ_MASK_POS_3 0x04 -#define DA9052_IRQ_MASK_POS_4 0x08 -#define DA9052_IRQ_MASK_POS_5 0x10 -#define DA9052_IRQ_MASK_POS_6 0x20 -#define DA9052_IRQ_MASK_POS_7 0x40 -#define DA9052_IRQ_MASK_POS_8 0x80 - static bool da9052_reg_readable(struct device *dev, unsigned int reg) { switch (reg) { @@ -291,6 +279,9 @@ static bool da9052_reg_volatile(struct device *dev, unsigned int reg) case DA9052_EVENT_B_REG: case DA9052_EVENT_C_REG: case DA9052_EVENT_D_REG: + case DA9052_CONTROL_B_REG: + case DA9052_CONTROL_D_REG: + case DA9052_SUPPLY_REG: case DA9052_FAULTLOG_REG: case DA9052_CHG_TIME_REG: case DA9052_ADC_RES_L_REG: @@ -319,75 +310,127 @@ static bool da9052_reg_volatile(struct device *dev, unsigned int reg) } } -static struct resource da9052_rtc_resource = { - .name = "ALM", - .start = DA9052_IRQ_ALARM, - .end = DA9052_IRQ_ALARM, - .flags = IORESOURCE_IRQ, +/* + * TBAT look-up table is computed from the R90 reg (8 bit register) + * reading as below. The battery temperature is in milliCentigrade + * TBAT = (1/(t1+1/298) - 273) * 1000 mC + * where t1 = (1/B)* ln(( ADCval * 2.5)/(R25*ITBAT*255)) + * Default values are R25 = 10e3, B = 3380, ITBAT = 50e-6 + * Example: + * R25=10E3, B=3380, ITBAT=50e-6, ADCVAL=62d calculates + * TBAT = 20015 mili degrees Centrigrade + * +*/ +static const int32_t tbat_lookup[255] = { + 183258, 144221, 124334, 111336, 101826, 94397, 88343, 83257, + 78889, 75071, 71688, 68656, 65914, 63414, 61120, 59001, + 570366, 55204, 53490, 51881, 50364, 48931, 47574, 46285, + 45059, 43889, 42772, 41703, 40678, 39694, 38748, 37838, + 36961, 36115, 35297, 34507, 33743, 33002, 32284, 31588, + 30911, 30254, 29615, 28994, 28389, 27799, 27225, 26664, + 26117, 25584, 25062, 24553, 24054, 23567, 23091, 22624, + 22167, 21719, 21281, 20851, 20429, 20015, 19610, 19211, + 18820, 18436, 18058, 17688, 17323, 16965, 16612, 16266, + 15925, 15589, 15259, 14933, 14613, 14298, 13987, 13681, + 13379, 13082, 12788, 12499, 12214, 11933, 11655, 11382, + 11112, 10845, 10582, 10322, 10066, 9812, 9562, 9315, + 9071, 8830, 8591, 8356, 8123, 7893, 7665, 7440, + 7218, 6998, 6780, 6565, 6352, 6141, 5933, 5726, + 5522, 5320, 5120, 4922, 4726, 4532, 4340, 4149, + 3961, 3774, 3589, 3406, 3225, 3045, 2867, 2690, + 2516, 2342, 2170, 2000, 1831, 1664, 1498, 1334, + 1171, 1009, 849, 690, 532, 376, 221, 67, + -84, -236, -386, -535, -683, -830, -975, -1119, + -1263, -1405, -1546, -1686, -1825, -1964, -2101, -2237, + -2372, -2506, -2639, -2771, -2902, -3033, -3162, -3291, + -3418, -3545, -3671, -3796, -3920, -4044, -4166, -4288, + -4409, -4529, -4649, -4767, -4885, -5002, -5119, -5235, + -5349, -5464, -5577, -5690, -5802, -5913, -6024, -6134, + -6244, -6352, -6461, -6568, -6675, -6781, -6887, -6992, + -7096, -7200, -7303, -7406, -7508, -7609, -7710, -7810, + -7910, -8009, -8108, -8206, -8304, -8401, -8497, -8593, + -8689, -8784, -8878, -8972, -9066, -9159, -9251, -9343, + -9435, -9526, -9617, -9707, -9796, -9886, -9975, -10063, + -10151, -10238, -10325, -10412, -10839, -10923, -11007, -11090, + -11173, -11256, -11338, -11420, -11501, -11583, -11663, -11744, + -11823, -11903, -11982 }; -static struct resource da9052_onkey_resource = { - .name = "ONKEY", - .start = DA9052_IRQ_NONKEY, - .end = DA9052_IRQ_NONKEY, - .flags = IORESOURCE_IRQ, +static const u8 chan_mux[DA9052_ADC_VBBAT + 1] = { + [DA9052_ADC_VDDOUT] = DA9052_ADC_MAN_MUXSEL_VDDOUT, + [DA9052_ADC_ICH] = DA9052_ADC_MAN_MUXSEL_ICH, + [DA9052_ADC_TBAT] = DA9052_ADC_MAN_MUXSEL_TBAT, + [DA9052_ADC_VBAT] = DA9052_ADC_MAN_MUXSEL_VBAT, + [DA9052_ADC_IN4] = DA9052_ADC_MAN_MUXSEL_AD4, + [DA9052_ADC_IN5] = DA9052_ADC_MAN_MUXSEL_AD5, + [DA9052_ADC_IN6] = DA9052_ADC_MAN_MUXSEL_AD6, + [DA9052_ADC_VBBAT] = DA9052_ADC_MAN_MUXSEL_VBBAT }; -static struct resource da9052_bat_resources[] = { - { - .name = "BATT TEMP", - .start = DA9052_IRQ_TBAT, - .end = DA9052_IRQ_TBAT, - .flags = IORESOURCE_IRQ, - }, - { - .name = "DCIN DET", - .start = DA9052_IRQ_DCIN, - .end = DA9052_IRQ_DCIN, - .flags = IORESOURCE_IRQ, - }, - { - .name = "DCIN REM", - .start = DA9052_IRQ_DCINREM, - .end = DA9052_IRQ_DCINREM, - .flags = IORESOURCE_IRQ, - }, - { - .name = "VBUS DET", - .start = DA9052_IRQ_VBUS, - .end = DA9052_IRQ_VBUS, - .flags = IORESOURCE_IRQ, - }, - { - .name = "VBUS REM", - .start = DA9052_IRQ_VBUSREM, - .end = DA9052_IRQ_VBUSREM, - .flags = IORESOURCE_IRQ, - }, - { - .name = "CHG END", - .start = DA9052_IRQ_CHGEND, - .end = DA9052_IRQ_CHGEND, - .flags = IORESOURCE_IRQ, - }, -}; +int da9052_adc_manual_read(struct da9052 *da9052, unsigned char channel) +{ + int ret; + unsigned short calc_data; + unsigned short data; + unsigned char mux_sel; -static struct resource da9052_tsi_resources[] = { - { - .name = "PENDWN", - .start = DA9052_IRQ_PENDOWN, - .end = DA9052_IRQ_PENDOWN, - .flags = IORESOURCE_IRQ, - }, - { - .name = "TSIRDY", - .start = DA9052_IRQ_TSIREADY, - .end = DA9052_IRQ_TSIREADY, - .flags = IORESOURCE_IRQ, - }, -}; + if (channel > DA9052_ADC_VBBAT) + return -EINVAL; + + mutex_lock(&da9052->auxadc_lock); + + /* Channel gets activated on enabling the Conversion bit */ + mux_sel = chan_mux[channel] | DA9052_ADC_MAN_MAN_CONV; + + ret = da9052_reg_write(da9052, DA9052_ADC_MAN_REG, mux_sel); + if (ret < 0) + goto err; + + /* Wait for an interrupt */ + if (!wait_for_completion_timeout(&da9052->done, + msecs_to_jiffies(500))) { + dev_err(da9052->dev, + "timeout waiting for ADC conversion interrupt\n"); + ret = -ETIMEDOUT; + goto err; + } + + ret = da9052_reg_read(da9052, DA9052_ADC_RES_H_REG); + if (ret < 0) + goto err; + + calc_data = (unsigned short)ret; + data = calc_data << 2; + + ret = da9052_reg_read(da9052, DA9052_ADC_RES_L_REG); + if (ret < 0) + goto err; + + calc_data = (unsigned short)(ret & DA9052_ADC_RES_LSB); + data |= calc_data; -static struct mfd_cell __devinitdata da9052_subdev_info[] = { + ret = data; + +err: + mutex_unlock(&da9052->auxadc_lock); + return ret; +} +EXPORT_SYMBOL_GPL(da9052_adc_manual_read); + +int da9052_adc_read_temp(struct da9052 *da9052) +{ + int tbat; + + tbat = da9052_reg_read(da9052, DA9052_TBAT_RES_REG); + if (tbat <= 0) + return tbat; + + /* ARRAY_SIZE check is not needed since TBAT is a 8-bit register */ + return tbat_lookup[tbat - 1]; +} +EXPORT_SYMBOL_GPL(da9052_adc_read_temp); + +static const struct mfd_cell da9052_subdev_info[] = { { .name = "da9052-regulator", .id = 1, @@ -446,13 +489,9 @@ static struct mfd_cell __devinitdata da9052_subdev_info[] = { }, { .name = "da9052-onkey", - .resources = &da9052_onkey_resource, - .num_resources = 1, }, { .name = "da9052-rtc", - .resources = &da9052_rtc_resource, - .num_resources = 1, }, { .name = "da9052-gpio", @@ -474,160 +513,15 @@ static struct mfd_cell __devinitdata da9052_subdev_info[] = { }, { .name = "da9052-tsi", - .resources = da9052_tsi_resources, - .num_resources = ARRAY_SIZE(da9052_tsi_resources), }, { .name = "da9052-bat", - .resources = da9052_bat_resources, - .num_resources = ARRAY_SIZE(da9052_bat_resources), }, { .name = "da9052-watchdog", }, }; -static struct regmap_irq da9052_irqs[] = { - [DA9052_IRQ_DCIN] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_1, - }, - [DA9052_IRQ_VBUS] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_2, - }, - [DA9052_IRQ_DCINREM] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_3, - }, - [DA9052_IRQ_VBUSREM] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_4, - }, - [DA9052_IRQ_VDDLOW] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_5, - }, - [DA9052_IRQ_ALARM] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_6, - }, - [DA9052_IRQ_SEQRDY] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_7, - }, - [DA9052_IRQ_COMP1V2] = { - .reg_offset = 0, - .mask = DA9052_IRQ_MASK_POS_8, - }, - [DA9052_IRQ_NONKEY] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_1, - }, - [DA9052_IRQ_IDFLOAT] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_2, - }, - [DA9052_IRQ_IDGND] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_3, - }, - [DA9052_IRQ_CHGEND] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_4, - }, - [DA9052_IRQ_TBAT] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_5, - }, - [DA9052_IRQ_ADC_EOM] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_6, - }, - [DA9052_IRQ_PENDOWN] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_7, - }, - [DA9052_IRQ_TSIREADY] = { - .reg_offset = 1, - .mask = DA9052_IRQ_MASK_POS_8, - }, - [DA9052_IRQ_GPI0] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_1, - }, - [DA9052_IRQ_GPI1] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_2, - }, - [DA9052_IRQ_GPI2] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_3, - }, - [DA9052_IRQ_GPI3] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_4, - }, - [DA9052_IRQ_GPI4] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_5, - }, - [DA9052_IRQ_GPI5] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_6, - }, - [DA9052_IRQ_GPI6] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_7, - }, - [DA9052_IRQ_GPI7] = { - .reg_offset = 2, - .mask = DA9052_IRQ_MASK_POS_8, - }, - [DA9052_IRQ_GPI8] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_1, - }, - [DA9052_IRQ_GPI9] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_2, - }, - [DA9052_IRQ_GPI10] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_3, - }, - [DA9052_IRQ_GPI11] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_4, - }, - [DA9052_IRQ_GPI12] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_5, - }, - [DA9052_IRQ_GPI13] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_6, - }, - [DA9052_IRQ_GPI14] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_7, - }, - [DA9052_IRQ_GPI15] = { - .reg_offset = 3, - .mask = DA9052_IRQ_MASK_POS_8, - }, -}; - -static struct regmap_irq_chip da9052_regmap_irq_chip = { - .name = "da9052_irq", - .status_base = DA9052_EVENT_A_REG, - .mask_base = DA9052_IRQ_MASK_A_REG, - .ack_base = DA9052_EVENT_A_REG, - .num_regs = DA9052_NUM_IRQ_REGS, - .irqs = da9052_irqs, - .num_irqs = ARRAY_SIZE(da9052_irqs), -}; - struct regmap_config da9052_regmap_config = { .reg_bits = 8, .val_bits = 8, @@ -641,52 +535,44 @@ struct regmap_config da9052_regmap_config = { }; EXPORT_SYMBOL_GPL(da9052_regmap_config); -int __devinit da9052_device_init(struct da9052 *da9052, u8 chip_id) +int da9052_device_init(struct da9052 *da9052, u8 chip_id) { - struct da9052_pdata *pdata = da9052->dev->platform_data; - struct irq_desc *desc; + struct da9052_pdata *pdata = dev_get_platdata(da9052->dev); int ret; - mutex_init(&da9052->io_lock); + mutex_init(&da9052->auxadc_lock); + init_completion(&da9052->done); if (pdata && pdata->init != NULL) pdata->init(da9052); da9052->chip_id = chip_id; - if (!pdata || !pdata->irq_base) - da9052->irq_base = -1; - else - da9052->irq_base = pdata->irq_base; - - ret = regmap_add_irq_chip(da9052->regmap, da9052->chip_irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - da9052->irq_base, &da9052_regmap_irq_chip, - NULL); - if (ret < 0) - goto regmap_err; - - desc = irq_to_desc(da9052->chip_irq); - da9052->irq_base = regmap_irq_chip_get_base(desc->action->dev_id); + ret = da9052_irq_init(da9052); + if (ret != 0) { + dev_err(da9052->dev, "da9052_irq_init failed: %d\n", ret); + return ret; + } ret = mfd_add_devices(da9052->dev, -1, da9052_subdev_info, - ARRAY_SIZE(da9052_subdev_info), NULL, 0); - if (ret) + ARRAY_SIZE(da9052_subdev_info), NULL, 0, NULL); + if (ret) { + dev_err(da9052->dev, "mfd_add_devices failed: %d\n", ret); goto err; + } return 0; err: - mfd_remove_devices(da9052->dev); -regmap_err: + da9052_irq_exit(da9052); + return ret; } void da9052_device_exit(struct da9052 *da9052) { - regmap_del_irq_chip(da9052->chip_irq, - irq_get_irq_data(da9052->irq_base)->chip_data); mfd_remove_devices(da9052->dev); + da9052_irq_exit(da9052); } MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); |