/* * Base driver for Marvell 88PM8607 * * Copyright (C) 2009 Marvell International Ltd. * Haojian Zhuang * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include char pm860x_backlight_name[][MFD_NAME_SIZE] = { "backlight-0", "backlight-1", "backlight-2", }; EXPORT_SYMBOL(pm860x_backlight_name); char pm860x_led_name[][MFD_NAME_SIZE] = { "led0-red", "led0-green", "led0-blue", "led1-red", "led1-green", "led1-blue", }; EXPORT_SYMBOL(pm860x_led_name); #define PM8606_BACKLIGHT_RESOURCE(_i, _x) \ { \ .name = pm860x_backlight_name[_i], \ .start = PM8606_##_x, \ .end = PM8606_##_x, \ .flags = IORESOURCE_IO, \ } static struct resource backlight_resources[] = { PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT1, WLED1A), PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT2, WLED2A), PM8606_BACKLIGHT_RESOURCE(PM8606_BACKLIGHT3, WLED3A), }; #define PM8606_BACKLIGHT_DEVS(_i) \ { \ .name = "88pm860x-backlight", \ .num_resources = 1, \ .resources = &backlight_resources[_i], \ .id = _i, \ } static struct mfd_cell backlight_devs[] = { PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT1), PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT2), PM8606_BACKLIGHT_DEVS(PM8606_BACKLIGHT3), }; #define PM8606_LED_RESOURCE(_i, _x) \ { \ .name = pm860x_led_name[_i], \ .start = PM8606_##_x, \ .end = PM8606_##_x, \ .flags = IORESOURCE_IO, \ } static struct resource led_resources[] = { PM8606_LED_RESOURCE(PM8606_LED1_RED, RGB2B), PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB2C), PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB2D), PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB1B), PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB1C), PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB1D), }; #define PM8606_LED_DEVS(_i) \ { \ .name = "88pm860x-led", \ .num_resources = 1, \ .resources = &led_resources[_i], \ .id = _i, \ } static struct mfd_cell led_devs[] = { PM8606_LED_DEVS(PM8606_LED1_RED), PM8606_LED_DEVS(PM8606_LED1_GREEN), PM8606_LED_DEVS(PM8606_LED1_BLUE), PM8606_LED_DEVS(PM8606_LED2_RED), PM8606_LED_DEVS(PM8606_LED2_GREEN), PM8606_LED_DEVS(PM8606_LED2_BLUE), }; static struct resource touch_resources[] = { { .start = PM8607_IRQ_PEN, .end = PM8607_IRQ_PEN, .flags = IORESOURCE_IRQ, }, }; static struct mfd_cell touch_devs[] = { { .name = "88pm860x-touch", .num_resources = 1, .resources = &touch_resources[0], }, }; #define PM8607_REG_RESOURCE(_start, _end) \ { \ .start = PM8607_##_start, \ .end = PM8607_##_end, \ .flags = IORESOURCE_IO, \ } static struct resource regulator_resources[] = { PM8607_REG_RESOURCE(BUCK1, BUCK1), PM8607_REG_RESOURCE(BUCK2, BUCK2), PM8607_REG_RESOURCE(BUCK3, BUCK3), PM8607_REG_RESOURCE(LDO1, LDO1), PM8607_REG_RESOURCE(LDO2, LDO2), PM8607_REG_RESOURCE(LDO3, LDO3), PM8607_REG_RESOURCE(LDO4, LDO4), PM8607_REG_RESOURCE(LDO5, LDO5), PM8607_REG_RESOURCE(LDO6, LDO6), PM8607_REG_RESOURCE(LDO7, LDO7), PM8607_REG_RESOURCE(LDO8, LDO8), PM8607_REG_RESOURCE(LDO9, LDO9), PM8607_REG_RESOURCE(LDO10, LDO10), PM8607_REG_RESOURCE(LDO12, LDO12), PM8607_REG_RESOURCE(LDO14, LDO14), }; #define PM8607_REG_DEVS(_name, _id) \ { \ .name = "88pm8607-" #_name, \ .num_resources = 1, \ .resources = ®ulator_resources[PM8607_ID_##_id], \ .id = PM8607_ID_##_id, \ } static struct mfd_cell regulator_devs[] = { PM8607_REG_DEVS(buck1, BUCK1), PM8607_REG_DEVS(buck2, BUCK2), PM8607_REG_DEVS(buck3, BUCK3), PM8607_REG_DEVS(ldo1, LDO1), PM8607_REG_DEVS(ldo2, LDO2), PM8607_REG_DEVS(ldo3, LDO3), PM8607_REG_DEVS(ldo4, LDO4), PM8607_REG_DEVS(ldo5, LDO5), PM8607_REG_DEVS(ldo6, LDO6), PM8607_REG_DEVS(ldo7, LDO7), PM8607_REG_DEVS(ldo8, LDO8), PM8607_REG_DEVS(ldo9, LDO9), PM8607_REG_DEVS(ldo10, LDO10), PM8607_REG_DEVS(ldo12, LDO12), PM8607_REG_DEVS(ldo14, LDO14), }; #define CHECK_IRQ(irq) \ do { \ if ((irq < 0) || (irq >= PM860X_NUM_IRQ)) \ return -EINVAL; \ } while (0) /* IRQs only occur on 88PM8607 */ int pm860x_mask_irq(struct pm860x_chip *chip, int irq) { struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ : chip->companion; int offset, data, ret; CHECK_IRQ(irq); offset = (irq >> 3) + PM8607_INT_MASK_1; data = 1 << (irq % 8); ret = pm860x_set_bits(i2c, offset, data, 0); return ret; } EXPORT_SYMBOL(pm860x_mask_irq); int pm860x_unmask_irq(struct pm860x_chip *chip, int irq) { struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ : chip->companion; int offset, data, ret; CHECK_IRQ(irq); offset = (irq >> 3) + PM8607_INT_MASK_1; data = 1 << (irq % 8); ret = pm860x_set_bits(i2c, offset, data, data); return ret; } EXPORT_SYMBOL(pm860x_unmask_irq); #define INT_STATUS_NUM (3) static irqreturn_t pm8607_irq_thread(int irq, void *data) { DECLARE_BITMAP(irq_status, PM860X_NUM_IRQ); struct pm860x_chip *chip = data; struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ : chip->companion; unsigned char status_buf[INT_STATUS_NUM << 1]; unsigned long value; int i, ret; irq_status[0] = 0; /* read out status register */ ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1, INT_STATUS_NUM << 1, status_buf); if (ret < 0) goto out; if (chip->irq_mode) { /* 0, clear by read. 1, clear by write */ ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1, INT_STATUS_NUM, status_buf); if (ret < 0) goto out; } /* clear masked interrupt status */ for (i = 0, value = 0; i < INT_STATUS_NUM; i++) { status_buf[i] &= status_buf[i + INT_STATUS_NUM]; irq_status[0] |= status_buf[i] << (i * 8); } while (!bitmap_empty(irq_status, PM860X_NUM_IRQ)) { irq = find_first_bit(irq_status, PM860X_NUM_IRQ); clear_bit(irq, irq_status); dev_dbg(chip->dev, "Servicing IRQ #%d\n", irq); mutex_lock(&chip->irq_lock); if (chip->irq[irq].handler) chip->irq[irq].handler(irq, chip->irq[irq].data); else { pm860x_mask_irq(chip, irq); dev_err(chip->dev, "Nobody cares IRQ %d. " "Now mask it.\n", irq); for (i = 0; i < (INT_STATUS_NUM << 1); i++) { dev_err(chip->dev, "status[%d]:%x\n", i, status_buf[i]); } } mutex_unlock(&chip->irq_lock); } out: return IRQ_HANDLED; } int pm860x_request_irq(struct pm860x_chip *chip, int irq, irq_handler_t handler, void *data) { CHECK_IRQ(irq); if (!handler) return -EINVAL; mutex_lock(&chip->irq_lock); chip->irq[irq].handler = handler; chip->irq[irq].data = data; mutex_unlock(&chip->irq_lock); return 0; } EXPORT_SYMBOL(pm860x_request_irq); int pm860x_free_irq(struct pm860x_chip *chip, int irq) { CHECK_IRQ(irq); mutex_lock(&chip->irq_lock); chip->irq[irq].handler = NULL; chip->irq[irq].data = NULL; mutex_unlock(&chip->irq_lock); return 0; } EXPORT_SYMBOL(pm860x_free_irq); static int __devinit device_gpadc_init(struct pm860x_chip *chip, struct pm860x_platform_data *pdata) { struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ : chip->companion; int use_gpadc = 0, data, ret; /* initialize GPADC without activating it */ if (pdata && pdata->touch) { /* set GPADC MISC1 register */ data = 0; data |= (pdata->touch->gpadc_prebias << 1) & PM8607_GPADC_PREBIAS_MASK; data |= (pdata->touch->slot_cycle << 3) & PM8607_GPADC_SLOT_CYCLE_MASK; data |= (pdata->touch->off_scale << 5) & PM8607_GPADC_OFF_SCALE_MASK; data |= (pdata->touch->sw_cal << 7) & PM8607_GPADC_SW_CAL_MASK; if (data) { ret = pm860x_reg_write(i2c, PM8607_GPADC_MISC1, data); if (ret < 0) goto out; } /* set tsi prebias time */ if (pdata->touch->tsi_prebias) { data = pdata->touch->tsi_prebias; ret = pm860x_reg_write(i2c, PM8607_TSI_PREBIAS, data); if (ret < 0) goto out; } /* set prebias & prechg time of pen detect */ data = 0; data |= pdata->touch->pen_prebias & PM8607_PD_PREBIAS_MASK; data |= (pdata->touch->pen_prechg << 5) & PM8607_PD_PRECHG_MASK; if (data) { ret = pm860x_reg_write(i2c, PM8607_PD_PREBIAS, data); if (ret < 0) goto out; } use_gpadc = 1; } /* turn on GPADC */ if (use_gpadc) { ret = pm860x_set_bits(i2c, PM8607_GPADC_MISC1, PM8607_GPADC_EN, PM8607_GPADC_EN); } out: return ret; } static int __devinit device_irq_init(struct pm860x_chip *chip, struct pm860x_platform_data *pdata) { struct i2c_client *i2c = (chip->id == CHIP_PM8607) ? chip->client \ : chip->companion; unsigned char status_buf[INT_STATUS_NUM]; int data, mask, ret = -EINVAL; mutex_init(&chip->irq_lock); mask = PM8607_B0_MISC1_INV_INT | PM8607_B0_MISC1_INT_CLEAR | PM8607_B0_MISC1_INT_MASK; data = 0; chip->irq_mode = 0; if (pdata && pdata->irq_mode) { /* * irq_mode defines the way of clearing interrupt. If it's 1, * clear IRQ by write. Otherwise, clear it by read. * This control bit is valid from 88PM8607 B0 steping. */ data |= PM8607_B0_MISC1_INT_CLEAR; chip->irq_mode = 1; } ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, mask, data); if (ret < 0) goto out; /* mask all IRQs */ memset(status_buf, 0, INT_STATUS_NUM); ret = pm860x_bulk_write(i2c, PM8607_INT_MASK_1, INT_STATUS_NUM, status_buf); if (ret < 0) goto out; if (chip->irq_mode) { /* clear interrupt status by write */ memset(status_buf, 0xFF, INT_STATUS_NUM); ret = pm860x_bulk_write(i2c, PM8607_INT_STATUS1, INT_STATUS_NUM, status_buf); } else { /* clear interrupt status by read */ ret = pm860x_bulk_read(i2c, PM8607_INT_STATUS1, INT_STATUS_NUM, status_buf); } if (ret < 0) goto out; memset(chip->irq, 0, sizeof(struct pm860x_irq) * PM860X_NUM_IRQ); ret = request_threaded_irq(i2c->irq, NULL, pm8607_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW, "88PM8607", chip); if (ret < 0) { dev_err(chip->dev, "Failed to request IRQ #%d.\n", i2c->irq); goto out; } chip->chip_irq = i2c->irq; return 0; out: return ret; } static void __devexit device_irq_exit(struct pm860x_chip *chip) { if (chip->chip_irq >= 0) free_irq(chip->chip_irq, chip); } static void __devinit device_8606_init(struct pm860x_chip *chip, struct i2c_client *i2c, struct pm860x_platform_data *pdata) { int ret; if (pdata && pdata->backlight) { ret = mfd_add_devices(chip->dev, 0, &backlight_devs[0], ARRAY_SIZE(backlight_devs), &backlight_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add backlight " "subdev\n"); goto out_dev; } } if (pdata && pdata->led) { ret = mfd_add_devices(chip->dev, 0, &led_devs[0], ARRAY_SIZE(led_devs), &led_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add led " "subdev\n"); goto out_dev; } } return; out_dev: mfd_remove_devices(chip->dev); device_irq_exit(chip); } static void __devinit device_8607_init(struct pm860x_chip *chip, struct i2c_client *i2c, struct pm860x_platform_data *pdata) { int data, ret; ret = pm860x_reg_read(i2c, PM8607_CHIP_ID); if (ret < 0) { dev_err(chip->dev, "Failed to read CHIP ID: %d\n", ret); goto out; } if ((ret & PM8607_VERSION_MASK) == PM8607_VERSION) dev_info(chip->dev, "Marvell 88PM8607 (ID: %02x) detected\n", ret); else { dev_err(chip->dev, "Failed to detect Marvell 88PM8607. " "Chip ID: %02x\n", ret); goto out; } ret = pm860x_reg_read(i2c, PM8607_BUCK3); if (ret < 0) { dev_err(chip->dev, "Failed to read BUCK3 register: %d\n", ret); goto out; } if (ret & PM8607_BUCK3_DOUBLE) chip->buck3_double = 1; ret = pm860x_reg_read(i2c, PM8607_B0_MISC1); if (ret < 0) { dev_err(chip->dev, "Failed to read MISC1 register: %d\n", ret); goto out; } if (pdata && (pdata->i2c_port == PI2C_PORT)) data = PM8607_B0_MISC1_PI2C; else data = 0; ret = pm860x_set_bits(i2c, PM8607_B0_MISC1, PM8607_B0_MISC1_PI2C, data); if (ret < 0) { dev_err(chip->dev, "Failed to access MISC1:%d\n", ret); goto out; } ret = device_gpadc_init(chip, pdata); if (ret < 0) goto out; ret = device_irq_init(chip, pdata); if (ret < 0) goto out; ret = mfd_add_devices(chip->dev, 0, ®ulator_devs[0], ARRAY_SIZE(regulator_devs), ®ulator_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add regulator subdev\n"); goto out_dev; } if (pdata && pdata->touch) { ret = mfd_add_devices(chip->dev, 0, &touch_devs[0], ARRAY_SIZE(touch_devs), &touch_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add touch " "subdev\n"); goto out_dev; } } return; out_dev: mfd_remove_devices(chip->dev); device_irq_exit(chip); out: return; } int pm860x_device_init(struct pm860x_chip *chip, struct pm860x_platform_data *pdata) { chip->chip_irq = -EINVAL; switch (chip->id) { case CHIP_PM8606: device_8606_init(chip, chip->client, pdata); break; case CHIP_PM8607: device_8607_init(chip, chip->client, pdata); break; } if (chip->companion) { switch (chip->id) { case CHIP_PM8607: device_8606_init(chip, chip->companion, pdata); break; case CHIP_PM8606: device_8607_init(chip, chip->companion, pdata); break; } } return 0; } void pm860x_device_exit(struct pm860x_chip *chip) { device_irq_exit(chip); mfd_remove_devices(chip->dev); } MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM860x"); MODULE_AUTHOR("Haojian Zhuang "); MODULE_LICENSE("GPL");