| /* |
| * Base driver for Marvell 88PM800 |
| * |
| * Copyright (C) 2012 Marvell International Ltd. |
| * Haojian Zhuang <haojian.zhuang@marvell.com> |
| * Joseph(Yossi) Hanin <yhanin@marvell.com> |
| * Qiao Zhou <zhouqiao@marvell.com> |
| * |
| * This file is subject to the terms and conditions of the GNU General |
| * Public License. See the file "COPYING" in the main directory of this |
| * archive for more details. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/err.h> |
| #include <linux/i2c.h> |
| #include <linux/mfd/core.h> |
| #include <linux/mfd/88pm80x.h> |
| #include <linux/slab.h> |
| |
| /* Interrupt Registers */ |
| #define PM800_INT_STATUS1 (0x05) |
| #define PM800_ONKEY_INT_STS1 (1 << 0) |
| #define PM800_EXTON_INT_STS1 (1 << 1) |
| #define PM800_CHG_INT_STS1 (1 << 2) |
| #define PM800_BAT_INT_STS1 (1 << 3) |
| #define PM800_RTC_INT_STS1 (1 << 4) |
| #define PM800_CLASSD_OC_INT_STS1 (1 << 5) |
| |
| #define PM800_INT_STATUS2 (0x06) |
| #define PM800_VBAT_INT_STS2 (1 << 0) |
| #define PM800_VSYS_INT_STS2 (1 << 1) |
| #define PM800_VCHG_INT_STS2 (1 << 2) |
| #define PM800_TINT_INT_STS2 (1 << 3) |
| #define PM800_GPADC0_INT_STS2 (1 << 4) |
| #define PM800_TBAT_INT_STS2 (1 << 5) |
| #define PM800_GPADC2_INT_STS2 (1 << 6) |
| #define PM800_GPADC3_INT_STS2 (1 << 7) |
| |
| #define PM800_INT_STATUS3 (0x07) |
| |
| #define PM800_INT_STATUS4 (0x08) |
| #define PM800_GPIO0_INT_STS4 (1 << 0) |
| #define PM800_GPIO1_INT_STS4 (1 << 1) |
| #define PM800_GPIO2_INT_STS4 (1 << 2) |
| #define PM800_GPIO3_INT_STS4 (1 << 3) |
| #define PM800_GPIO4_INT_STS4 (1 << 4) |
| |
| #define PM800_INT_ENA_1 (0x09) |
| #define PM800_ONKEY_INT_ENA1 (1 << 0) |
| #define PM800_EXTON_INT_ENA1 (1 << 1) |
| #define PM800_CHG_INT_ENA1 (1 << 2) |
| #define PM800_BAT_INT_ENA1 (1 << 3) |
| #define PM800_RTC_INT_ENA1 (1 << 4) |
| #define PM800_CLASSD_OC_INT_ENA1 (1 << 5) |
| |
| #define PM800_INT_ENA_2 (0x0A) |
| #define PM800_VBAT_INT_ENA2 (1 << 0) |
| #define PM800_VSYS_INT_ENA2 (1 << 1) |
| #define PM800_VCHG_INT_ENA2 (1 << 2) |
| #define PM800_TINT_INT_ENA2 (1 << 3) |
| |
| #define PM800_INT_ENA_3 (0x0B) |
| #define PM800_GPADC0_INT_ENA3 (1 << 0) |
| #define PM800_GPADC1_INT_ENA3 (1 << 1) |
| #define PM800_GPADC2_INT_ENA3 (1 << 2) |
| #define PM800_GPADC3_INT_ENA3 (1 << 3) |
| #define PM800_GPADC4_INT_ENA3 (1 << 4) |
| |
| #define PM800_INT_ENA_4 (0x0C) |
| #define PM800_GPIO0_INT_ENA4 (1 << 0) |
| #define PM800_GPIO1_INT_ENA4 (1 << 1) |
| #define PM800_GPIO2_INT_ENA4 (1 << 2) |
| #define PM800_GPIO3_INT_ENA4 (1 << 3) |
| #define PM800_GPIO4_INT_ENA4 (1 << 4) |
| |
| /* number of INT_ENA & INT_STATUS regs */ |
| #define PM800_INT_REG_NUM (4) |
| |
| /* Interrupt Number in 88PM800 */ |
| enum { |
| PM800_IRQ_ONKEY, /*EN1b0 *//*0 */ |
| PM800_IRQ_EXTON, /*EN1b1 */ |
| PM800_IRQ_CHG, /*EN1b2 */ |
| PM800_IRQ_BAT, /*EN1b3 */ |
| PM800_IRQ_RTC, /*EN1b4 */ |
| PM800_IRQ_CLASSD, /*EN1b5 *//*5 */ |
| PM800_IRQ_VBAT, /*EN2b0 */ |
| PM800_IRQ_VSYS, /*EN2b1 */ |
| PM800_IRQ_VCHG, /*EN2b2 */ |
| PM800_IRQ_TINT, /*EN2b3 */ |
| PM800_IRQ_GPADC0, /*EN3b0 *//*10 */ |
| PM800_IRQ_GPADC1, /*EN3b1 */ |
| PM800_IRQ_GPADC2, /*EN3b2 */ |
| PM800_IRQ_GPADC3, /*EN3b3 */ |
| PM800_IRQ_GPADC4, /*EN3b4 */ |
| PM800_IRQ_GPIO0, /*EN4b0 *//*15 */ |
| PM800_IRQ_GPIO1, /*EN4b1 */ |
| PM800_IRQ_GPIO2, /*EN4b2 */ |
| PM800_IRQ_GPIO3, /*EN4b3 */ |
| PM800_IRQ_GPIO4, /*EN4b4 *//*19 */ |
| PM800_MAX_IRQ, |
| }; |
| |
| /* PM800: generation identification number */ |
| #define PM800_CHIP_GEN_ID_NUM 0x3 |
| |
| static const struct i2c_device_id pm80x_id_table[] = { |
| {"88PM800", 0}, |
| {} /* NULL terminated */ |
| }; |
| MODULE_DEVICE_TABLE(i2c, pm80x_id_table); |
| |
| static struct resource rtc_resources[] = { |
| { |
| .name = "88pm80x-rtc", |
| .start = PM800_IRQ_RTC, |
| .end = PM800_IRQ_RTC, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct mfd_cell rtc_devs[] = { |
| { |
| .name = "88pm80x-rtc", |
| .num_resources = ARRAY_SIZE(rtc_resources), |
| .resources = &rtc_resources[0], |
| .id = -1, |
| }, |
| }; |
| |
| static struct resource onkey_resources[] = { |
| { |
| .name = "88pm80x-onkey", |
| .start = PM800_IRQ_ONKEY, |
| .end = PM800_IRQ_ONKEY, |
| .flags = IORESOURCE_IRQ, |
| }, |
| }; |
| |
| static struct mfd_cell onkey_devs[] = { |
| { |
| .name = "88pm80x-onkey", |
| .num_resources = 1, |
| .resources = &onkey_resources[0], |
| .id = -1, |
| }, |
| }; |
| |
| static struct mfd_cell regulator_devs[] = { |
| { |
| .name = "88pm80x-regulator", |
| .id = -1, |
| }, |
| }; |
| |
| static const struct regmap_irq pm800_irqs[] = { |
| /* INT0 */ |
| [PM800_IRQ_ONKEY] = { |
| .mask = PM800_ONKEY_INT_ENA1, |
| }, |
| [PM800_IRQ_EXTON] = { |
| .mask = PM800_EXTON_INT_ENA1, |
| }, |
| [PM800_IRQ_CHG] = { |
| .mask = PM800_CHG_INT_ENA1, |
| }, |
| [PM800_IRQ_BAT] = { |
| .mask = PM800_BAT_INT_ENA1, |
| }, |
| [PM800_IRQ_RTC] = { |
| .mask = PM800_RTC_INT_ENA1, |
| }, |
| [PM800_IRQ_CLASSD] = { |
| .mask = PM800_CLASSD_OC_INT_ENA1, |
| }, |
| /* INT1 */ |
| [PM800_IRQ_VBAT] = { |
| .reg_offset = 1, |
| .mask = PM800_VBAT_INT_ENA2, |
| }, |
| [PM800_IRQ_VSYS] = { |
| .reg_offset = 1, |
| .mask = PM800_VSYS_INT_ENA2, |
| }, |
| [PM800_IRQ_VCHG] = { |
| .reg_offset = 1, |
| .mask = PM800_VCHG_INT_ENA2, |
| }, |
| [PM800_IRQ_TINT] = { |
| .reg_offset = 1, |
| .mask = PM800_TINT_INT_ENA2, |
| }, |
| /* INT2 */ |
| [PM800_IRQ_GPADC0] = { |
| .reg_offset = 2, |
| .mask = PM800_GPADC0_INT_ENA3, |
| }, |
| [PM800_IRQ_GPADC1] = { |
| .reg_offset = 2, |
| .mask = PM800_GPADC1_INT_ENA3, |
| }, |
| [PM800_IRQ_GPADC2] = { |
| .reg_offset = 2, |
| .mask = PM800_GPADC2_INT_ENA3, |
| }, |
| [PM800_IRQ_GPADC3] = { |
| .reg_offset = 2, |
| .mask = PM800_GPADC3_INT_ENA3, |
| }, |
| [PM800_IRQ_GPADC4] = { |
| .reg_offset = 2, |
| .mask = PM800_GPADC4_INT_ENA3, |
| }, |
| /* INT3 */ |
| [PM800_IRQ_GPIO0] = { |
| .reg_offset = 3, |
| .mask = PM800_GPIO0_INT_ENA4, |
| }, |
| [PM800_IRQ_GPIO1] = { |
| .reg_offset = 3, |
| .mask = PM800_GPIO1_INT_ENA4, |
| }, |
| [PM800_IRQ_GPIO2] = { |
| .reg_offset = 3, |
| .mask = PM800_GPIO2_INT_ENA4, |
| }, |
| [PM800_IRQ_GPIO3] = { |
| .reg_offset = 3, |
| .mask = PM800_GPIO3_INT_ENA4, |
| }, |
| [PM800_IRQ_GPIO4] = { |
| .reg_offset = 3, |
| .mask = PM800_GPIO4_INT_ENA4, |
| }, |
| }; |
| |
| static int device_gpadc_init(struct pm80x_chip *chip, |
| struct pm80x_platform_data *pdata) |
| { |
| struct pm80x_subchip *subchip = chip->subchip; |
| struct regmap *map = subchip->regmap_gpadc; |
| int data = 0, mask = 0, ret = 0; |
| |
| if (!map) { |
| dev_warn(chip->dev, |
| "Warning: gpadc regmap is not available!\n"); |
| return -EINVAL; |
| } |
| /* |
| * initialize GPADC without activating it turn on GPADC |
| * measurments |
| */ |
| ret = regmap_update_bits(map, |
| PM800_GPADC_MISC_CONFIG2, |
| PM800_GPADC_MISC_GPFSM_EN, |
| PM800_GPADC_MISC_GPFSM_EN); |
| if (ret < 0) |
| goto out; |
| /* |
| * This function configures the ADC as requires for |
| * CP implementation.CP does not "own" the ADC configuration |
| * registers and relies on AP. |
| * Reason: enable automatic ADC measurements needed |
| * for CP to get VBAT and RF temperature readings. |
| */ |
| ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1, |
| PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT); |
| if (ret < 0) |
| goto out; |
| ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2, |
| (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN), |
| (PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN)); |
| if (ret < 0) |
| goto out; |
| |
| /* |
| * the defult of PM800 is GPADC operates at 100Ks/s rate |
| * and Number of GPADC slots with active current bias prior |
| * to GPADC sampling = 1 slot for all GPADCs set for |
| * Temprature mesurmants |
| */ |
| mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 | |
| PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3); |
| |
| if (pdata && (pdata->batt_det == 0)) |
| data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 | |
| PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3); |
| else |
| data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 | |
| PM800_GPADC_GP_BIAS_EN3); |
| |
| ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data); |
| if (ret < 0) |
| goto out; |
| |
| dev_info(chip->dev, "pm800 device_gpadc_init: Done\n"); |
| return 0; |
| |
| out: |
| dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n"); |
| return ret; |
| } |
| |
| static int device_onkey_init(struct pm80x_chip *chip, |
| struct pm80x_platform_data *pdata) |
| { |
| int ret; |
| |
| ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0], |
| ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0, |
| NULL); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add onkey subdev\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int device_rtc_init(struct pm80x_chip *chip, |
| struct pm80x_platform_data *pdata) |
| { |
| int ret; |
| |
| rtc_devs[0].platform_data = pdata->rtc; |
| rtc_devs[0].pdata_size = |
| pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0; |
| ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0], |
| ARRAY_SIZE(rtc_devs), NULL, 0, NULL); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add rtc subdev\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int device_regulator_init(struct pm80x_chip *chip, |
| struct pm80x_platform_data *pdata) |
| { |
| int ret; |
| |
| ret = mfd_add_devices(chip->dev, 0, ®ulator_devs[0], |
| ARRAY_SIZE(regulator_devs), NULL, 0, NULL); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add regulator subdev\n"); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int device_irq_init_800(struct pm80x_chip *chip) |
| { |
| struct regmap *map = chip->regmap; |
| unsigned long flags = IRQF_ONESHOT; |
| int data, mask, ret = -EINVAL; |
| |
| if (!map || !chip->irq) { |
| dev_err(chip->dev, "incorrect parameters\n"); |
| return -EINVAL; |
| } |
| |
| /* |
| * irq_mode defines the way of clearing interrupt. it's read-clear by |
| * default. |
| */ |
| mask = |
| PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR | |
| PM800_WAKEUP2_INT_MASK; |
| |
| data = PM800_WAKEUP2_INT_CLEAR; |
| ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data); |
| |
| if (ret < 0) |
| goto out; |
| |
| ret = |
| regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1, |
| chip->regmap_irq_chip, &chip->irq_data); |
| |
| out: |
| return ret; |
| } |
| |
| static void device_irq_exit_800(struct pm80x_chip *chip) |
| { |
| regmap_del_irq_chip(chip->irq, chip->irq_data); |
| } |
| |
| static struct regmap_irq_chip pm800_irq_chip = { |
| .name = "88pm800", |
| .irqs = pm800_irqs, |
| .num_irqs = ARRAY_SIZE(pm800_irqs), |
| |
| .num_regs = 4, |
| .status_base = PM800_INT_STATUS1, |
| .mask_base = PM800_INT_ENA_1, |
| .ack_base = PM800_INT_STATUS1, |
| .mask_invert = 1, |
| }; |
| |
| static int pm800_pages_init(struct pm80x_chip *chip) |
| { |
| struct pm80x_subchip *subchip; |
| struct i2c_client *client = chip->client; |
| |
| int ret = 0; |
| |
| subchip = chip->subchip; |
| if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr) |
| return -ENODEV; |
| |
| /* PM800 block power page */ |
| subchip->power_page = i2c_new_dummy(client->adapter, |
| subchip->power_page_addr); |
| if (subchip->power_page == NULL) { |
| ret = -ENODEV; |
| goto out; |
| } |
| |
| subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page, |
| &pm80x_regmap_config); |
| if (IS_ERR(subchip->regmap_power)) { |
| ret = PTR_ERR(subchip->regmap_power); |
| dev_err(chip->dev, |
| "Failed to allocate regmap_power: %d\n", ret); |
| goto out; |
| } |
| |
| i2c_set_clientdata(subchip->power_page, chip); |
| |
| /* PM800 block GPADC */ |
| subchip->gpadc_page = i2c_new_dummy(client->adapter, |
| subchip->gpadc_page_addr); |
| if (subchip->gpadc_page == NULL) { |
| ret = -ENODEV; |
| goto out; |
| } |
| |
| subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page, |
| &pm80x_regmap_config); |
| if (IS_ERR(subchip->regmap_gpadc)) { |
| ret = PTR_ERR(subchip->regmap_gpadc); |
| dev_err(chip->dev, |
| "Failed to allocate regmap_gpadc: %d\n", ret); |
| goto out; |
| } |
| i2c_set_clientdata(subchip->gpadc_page, chip); |
| |
| out: |
| return ret; |
| } |
| |
| static void pm800_pages_exit(struct pm80x_chip *chip) |
| { |
| struct pm80x_subchip *subchip; |
| |
| subchip = chip->subchip; |
| |
| if (subchip && subchip->power_page) |
| i2c_unregister_device(subchip->power_page); |
| |
| if (subchip && subchip->gpadc_page) |
| i2c_unregister_device(subchip->gpadc_page); |
| } |
| |
| static int device_800_init(struct pm80x_chip *chip, |
| struct pm80x_platform_data *pdata) |
| { |
| int ret; |
| unsigned int val; |
| |
| /* |
| * alarm wake up bit will be clear in device_irq_init(), |
| * read before that |
| */ |
| ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val); |
| if (ret < 0) { |
| dev_err(chip->dev, "Failed to read RTC register: %d\n", ret); |
| goto out; |
| } |
| if (val & PM800_ALARM_WAKEUP) { |
| if (pdata && pdata->rtc) |
| pdata->rtc->rtc_wakeup = 1; |
| } |
| |
| ret = device_gpadc_init(chip, pdata); |
| if (ret < 0) { |
| dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__); |
| goto out; |
| } |
| |
| chip->regmap_irq_chip = &pm800_irq_chip; |
| |
| ret = device_irq_init_800(chip); |
| if (ret < 0) { |
| dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__); |
| goto out; |
| } |
| |
| ret = device_onkey_init(chip, pdata); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add onkey subdev\n"); |
| goto out_dev; |
| } |
| |
| ret = device_rtc_init(chip, pdata); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add rtc subdev\n"); |
| goto out; |
| } |
| |
| ret = device_regulator_init(chip, pdata); |
| if (ret) { |
| dev_err(chip->dev, "Failed to add regulators subdev\n"); |
| goto out; |
| } |
| |
| return 0; |
| out_dev: |
| mfd_remove_devices(chip->dev); |
| device_irq_exit_800(chip); |
| out: |
| return ret; |
| } |
| |
| static int pm800_probe(struct i2c_client *client, |
| const struct i2c_device_id *id) |
| { |
| int ret = 0; |
| struct pm80x_chip *chip; |
| struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev); |
| struct pm80x_subchip *subchip; |
| |
| ret = pm80x_init(client); |
| if (ret) { |
| dev_err(&client->dev, "pm800_init fail\n"); |
| goto out_init; |
| } |
| |
| chip = i2c_get_clientdata(client); |
| |
| /* init subchip for PM800 */ |
| subchip = |
| devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip), |
| GFP_KERNEL); |
| if (!subchip) { |
| ret = -ENOMEM; |
| goto err_subchip_alloc; |
| } |
| |
| /* pm800 has 2 addtional pages to support power and gpadc. */ |
| subchip->power_page_addr = client->addr + 1; |
| subchip->gpadc_page_addr = client->addr + 2; |
| chip->subchip = subchip; |
| |
| ret = pm800_pages_init(chip); |
| if (ret) { |
| dev_err(&client->dev, "pm800_pages_init failed!\n"); |
| goto err_page_init; |
| } |
| |
| ret = device_800_init(chip, pdata); |
| if (ret) { |
| dev_err(chip->dev, "Failed to initialize 88pm800 devices\n"); |
| goto err_device_init; |
| } |
| |
| if (pdata->plat_config) |
| pdata->plat_config(chip, pdata); |
| |
| return 0; |
| |
| err_device_init: |
| pm800_pages_exit(chip); |
| err_page_init: |
| err_subchip_alloc: |
| pm80x_deinit(); |
| out_init: |
| return ret; |
| } |
| |
| static int pm800_remove(struct i2c_client *client) |
| { |
| struct pm80x_chip *chip = i2c_get_clientdata(client); |
| |
| mfd_remove_devices(chip->dev); |
| device_irq_exit_800(chip); |
| |
| pm800_pages_exit(chip); |
| pm80x_deinit(); |
| |
| return 0; |
| } |
| |
| static struct i2c_driver pm800_driver = { |
| .driver = { |
| .name = "88PM800", |
| .owner = THIS_MODULE, |
| .pm = &pm80x_pm_ops, |
| }, |
| .probe = pm800_probe, |
| .remove = pm800_remove, |
| .id_table = pm80x_id_table, |
| }; |
| |
| static int __init pm800_i2c_init(void) |
| { |
| return i2c_add_driver(&pm800_driver); |
| } |
| subsys_initcall(pm800_i2c_init); |
| |
| static void __exit pm800_i2c_exit(void) |
| { |
| i2c_del_driver(&pm800_driver); |
| } |
| module_exit(pm800_i2c_exit); |
| |
| MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800"); |
| MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>"); |
| MODULE_LICENSE("GPL"); |