/* * 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 #include #define INT_STATUS_NUM 3 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, RGB1B), PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB1C), PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB1D), PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB2B), PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB2C), PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB2D), }; #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 power_supply_resources[] = { { .name = "88pm860x-power", .start = PM8607_IRQ_CHG, .end = PM8607_IRQ_CHG, .flags = IORESOURCE_IRQ, }, }; static struct mfd_cell power_devs[] = { { .name = "88pm860x-power", .num_resources = 1, .resources = &power_supply_resources[0], .id = -1, }, }; static struct resource onkey_resources[] = { { .name = "88pm860x-onkey", .start = PM8607_IRQ_ONKEY, .end = PM8607_IRQ_ONKEY, .flags = IORESOURCE_IRQ, }, }; static struct mfd_cell onkey_devs[] = { { .name = "88pm860x-onkey", .num_resources = 1, .resources = &onkey_resources[0], .id = -1, }, }; 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(VIBRATOR_SET, VIBRATOR_SET), PM8607_REG_RESOURCE(LDO14, LDO14), }; #define PM8607_REG_DEVS(_id) \ { \ .name = "88pm860x-regulator", \ .num_resources = 1, \ .resources = ®ulator_resources[PM8607_ID_##_id], \ .id = PM8607_ID_##_id, \ } static struct mfd_cell regulator_devs[] = { PM8607_REG_DEVS(BUCK1), PM8607_REG_DEVS(BUCK2), PM8607_REG_DEVS(BUCK3), PM8607_REG_DEVS(LDO1), PM8607_REG_DEVS(LDO2), PM8607_REG_DEVS(LDO3), PM8607_REG_DEVS(LDO4), PM8607_REG_DEVS(LDO5), PM8607_REG_DEVS(LDO6), PM8607_REG_DEVS(LDO7), PM8607_REG_DEVS(LDO8), PM8607_REG_DEVS(LDO9), PM8607_REG_DEVS(LDO10), PM8607_REG_DEVS(LDO12), PM8607_REG_DEVS(LDO13), PM8607_REG_DEVS(LDO14), }; struct pm860x_irq_data { int reg; int mask_reg; int enable; /* enable or not */ int offs; /* bit offset in mask register */ }; static struct pm860x_irq_data pm860x_irqs[] = { [PM8607_IRQ_ONKEY] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 0, }, [PM8607_IRQ_EXTON] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 1, }, [PM8607_IRQ_CHG] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 2, }, [PM8607_IRQ_BAT] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 3, }, [PM8607_IRQ_RTC] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 4, }, [PM8607_IRQ_CC] = { .reg = PM8607_INT_STATUS1, .mask_reg = PM8607_INT_MASK_1, .offs = 1 << 5, }, [PM8607_IRQ_VBAT] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 0, }, [PM8607_IRQ_VCHG] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 1, }, [PM8607_IRQ_VSYS] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 2, }, [PM8607_IRQ_TINT] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 3, }, [PM8607_IRQ_GPADC0] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 4, }, [PM8607_IRQ_GPADC1] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 5, }, [PM8607_IRQ_GPADC2] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 6, }, [PM8607_IRQ_GPADC3] = { .reg = PM8607_INT_STATUS2, .mask_reg = PM8607_INT_MASK_2, .offs = 1 << 7, }, [PM8607_IRQ_AUDIO_SHORT] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 0, }, [PM8607_IRQ_PEN] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 1, }, [PM8607_IRQ_HEADSET] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 2, }, [PM8607_IRQ_HOOK] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 3, }, [PM8607_IRQ_MICIN] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 4, }, [PM8607_IRQ_CHG_FAIL] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 5, }, [PM8607_IRQ_CHG_DONE] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 6, }, [PM8607_IRQ_CHG_FAULT] = { .reg = PM8607_INT_STATUS3, .mask_reg = PM8607_INT_MASK_3, .offs = 1 << 7, }, }; static inline struct pm860x_irq_data *irq_to_pm860x(struct pm860x_chip *chip, int irq) { return &pm860x_irqs[irq - chip->irq_base]; } static irqreturn_t pm860x_irq(int irq, void *data) { struct pm860x_chip *chip = data; struct pm860x_irq_data *irq_data; struct i2c_client *i2c; int read_reg = -1, value = 0; int i; i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) { irq_data = &pm860x_irqs[i]; if (read_reg != irq_data->reg) { read_reg = irq_data->reg; value = pm860x_reg_read(i2c, irq_data->reg); } if (value & irq_data->enable) handle_nested_irq(chip->irq_base + i); } return IRQ_HANDLED; } static void pm860x_irq_lock(unsigned int irq) { struct pm860x_chip *chip = get_irq_chip_data(irq); mutex_lock(&chip->irq_lock); } static void pm860x_irq_sync_unlock(unsigned int irq) { struct pm860x_chip *chip = get_irq_chip_data(irq); struct pm860x_irq_data *irq_data; struct i2c_client *i2c; static unsigned char cached[3] = {0x0, 0x0, 0x0}; unsigned char mask[3]; int i; i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion; /* Load cached value. In initial, all IRQs are masked */ for (i = 0; i < 3; i++) mask[i] = cached[i]; for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) { irq_data = &pm860x_irqs[i]; switch (irq_data->mask_reg) { case PM8607_INT_MASK_1: mask[0] &= ~irq_data->offs; mask[0] |= irq_data->enable; break; case PM8607_INT_MASK_2: mask[1] &= ~irq_data->offs; mask[1] |= irq_data->enable; break; case PM8607_INT_MASK_3: mask[2] &= ~irq_data->offs; mask[2] |= irq_data->enable; break; default: dev_err(chip->dev, "wrong IRQ\n"); break; } } /* update mask into registers */ for (i = 0; i < 3; i++) { if (mask[i] != cached[i]) { cached[i] = mask[i]; pm860x_reg_write(i2c, PM8607_INT_MASK_1 + i, mask[i]); } } mutex_unlock(&chip->irq_lock); } static void pm860x_irq_enable(unsigned int irq) { struct pm860x_chip *chip = get_irq_chip_data(irq); pm860x_irqs[irq - chip->irq_base].enable = pm860x_irqs[irq - chip->irq_base].offs; } static void pm860x_irq_disable(unsigned int irq) { struct pm860x_chip *chip = get_irq_chip_data(irq); pm860x_irqs[irq - chip->irq_base].enable = 0; } static struct irq_chip pm860x_irq_chip = { .name = "88pm860x", .bus_lock = pm860x_irq_lock, .bus_sync_unlock = pm860x_irq_sync_unlock, .enable = pm860x_irq_enable, .disable = pm860x_irq_disable, }; 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 data; int ret; /* initialize GPADC without activating it */ if (!pdata || !pdata->touch) return -EINVAL; /* 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; } 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]; unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT; struct irq_desc *desc; int i, data, mask, ret = -EINVAL; int __irq; if (!pdata || !pdata->irq_base) { dev_warn(chip->dev, "No interrupt support on IRQ base\n"); return -EINVAL; } 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; mutex_init(&chip->irq_lock); chip->irq_base = pdata->irq_base; chip->core_irq = i2c->irq; if (!chip->core_irq) goto out; desc = irq_to_desc(chip->core_irq); /* register IRQ by genirq */ for (i = 0; i < ARRAY_SIZE(pm860x_irqs); i++) { __irq = i + chip->irq_base; set_irq_chip_data(__irq, chip); set_irq_chip_and_handler(__irq, &pm860x_irq_chip, handle_edge_irq); set_irq_nested_thread(__irq, 1); #ifdef CONFIG_ARM set_irq_flags(__irq, IRQF_VALID); #else set_irq_noprobe(__irq); #endif } ret = request_threaded_irq(chip->core_irq, NULL, pm860x_irq, flags, "88pm860x", chip); if (ret) { dev_err(chip->dev, "Failed to request IRQ: %d\n", ret); chip->core_irq = 0; } return 0; out: chip->core_irq = 0; return ret; } static void device_irq_exit(struct pm860x_chip *chip) { if (chip->core_irq) free_irq(chip->core_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; } } if (pdata && pdata->power) { ret = mfd_add_devices(chip->dev, 0, &power_devs[0], ARRAY_SIZE(power_devs), &power_supply_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add power supply " "subdev\n"); goto out_dev; } } ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0], ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0); if (ret < 0) { dev_err(chip->dev, "Failed to add onkey subdev\n"); goto out_dev; } return; out_dev: mfd_remove_devices(chip->dev); device_irq_exit(chip); out: return; } int __devinit pm860x_device_init(struct pm860x_chip *chip, struct pm860x_platform_data *pdata) { chip->core_irq = 0; 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 __devexit 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");