| /* |
| * Arizona core driver |
| * |
| * Copyright 2012 Wolfson Microelectronics plc |
| * |
| * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| * |
| * 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 <linux/delay.h> |
| #include <linux/err.h> |
| #include <linux/gpio.h> |
| #include <linux/interrupt.h> |
| #include <linux/mfd/core.h> |
| #include <linux/module.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/slab.h> |
| |
| #include <linux/mfd/arizona/core.h> |
| #include <linux/mfd/arizona/registers.h> |
| |
| #include "arizona.h" |
| |
| static const char *wm5102_core_supplies[] = { |
| "AVDD", |
| "DBVDD1", |
| }; |
| |
| int arizona_clk32k_enable(struct arizona *arizona) |
| { |
| int ret = 0; |
| |
| mutex_lock(&arizona->clk_lock); |
| |
| arizona->clk32k_ref++; |
| |
| if (arizona->clk32k_ref == 1) |
| ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1, |
| ARIZONA_CLK_32K_ENA, |
| ARIZONA_CLK_32K_ENA); |
| |
| if (ret != 0) |
| arizona->clk32k_ref--; |
| |
| mutex_unlock(&arizona->clk_lock); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(arizona_clk32k_enable); |
| |
| int arizona_clk32k_disable(struct arizona *arizona) |
| { |
| int ret = 0; |
| |
| mutex_lock(&arizona->clk_lock); |
| |
| BUG_ON(arizona->clk32k_ref <= 0); |
| |
| arizona->clk32k_ref--; |
| |
| if (arizona->clk32k_ref == 0) |
| regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1, |
| ARIZONA_CLK_32K_ENA, 0); |
| |
| mutex_unlock(&arizona->clk_lock); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(arizona_clk32k_disable); |
| |
| static irqreturn_t arizona_clkgen_err(int irq, void *data) |
| { |
| struct arizona *arizona = data; |
| |
| dev_err(arizona->dev, "CLKGEN error\n"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t arizona_underclocked(int irq, void *data) |
| { |
| struct arizona *arizona = data; |
| unsigned int val; |
| int ret; |
| |
| ret = regmap_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_8, |
| &val); |
| if (ret != 0) { |
| dev_err(arizona->dev, "Failed to read underclock status: %d\n", |
| ret); |
| return IRQ_NONE; |
| } |
| |
| if (val & ARIZONA_AIF3_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF3 underclocked\n"); |
| if (val & ARIZONA_AIF3_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF3 underclocked\n"); |
| if (val & ARIZONA_AIF2_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF1 underclocked\n"); |
| if (val & ARIZONA_ISRC2_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "ISRC2 underclocked\n"); |
| if (val & ARIZONA_ISRC1_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "ISRC1 underclocked\n"); |
| if (val & ARIZONA_FX_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "FX underclocked\n"); |
| if (val & ARIZONA_ASRC_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "ASRC underclocked\n"); |
| if (val & ARIZONA_DAC_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "DAC underclocked\n"); |
| if (val & ARIZONA_ADC_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "ADC underclocked\n"); |
| if (val & ARIZONA_MIXER_UNDERCLOCKED_STS) |
| dev_err(arizona->dev, "Mixer underclocked\n"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t arizona_overclocked(int irq, void *data) |
| { |
| struct arizona *arizona = data; |
| unsigned int val[2]; |
| int ret; |
| |
| ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6, |
| &val[0], 2); |
| if (ret != 0) { |
| dev_err(arizona->dev, "Failed to read overclock status: %d\n", |
| ret); |
| return IRQ_NONE; |
| } |
| |
| if (val[0] & ARIZONA_PWM_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "PWM overclocked\n"); |
| if (val[0] & ARIZONA_FX_CORE_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "FX core overclocked\n"); |
| if (val[0] & ARIZONA_DAC_SYS_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "DAC SYS overclocked\n"); |
| if (val[0] & ARIZONA_DAC_WARP_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "DAC WARP overclocked\n"); |
| if (val[0] & ARIZONA_ADC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ADC overclocked\n"); |
| if (val[0] & ARIZONA_MIXER_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "Mixer overclocked\n"); |
| if (val[0] & ARIZONA_AIF3_SYNC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF3 overclocked\n"); |
| if (val[0] & ARIZONA_AIF2_SYNC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF2 overclocked\n"); |
| if (val[0] & ARIZONA_AIF1_SYNC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "AIF1 overclocked\n"); |
| if (val[0] & ARIZONA_PAD_CTRL_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "Pad control overclocked\n"); |
| |
| if (val[1] & ARIZONA_SLIMBUS_SUBSYS_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "Slimbus subsystem overclocked\n"); |
| if (val[1] & ARIZONA_SLIMBUS_ASYNC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "Slimbus async overclocked\n"); |
| if (val[1] & ARIZONA_SLIMBUS_SYNC_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "Slimbus sync overclocked\n"); |
| if (val[1] & ARIZONA_ASRC_ASYNC_SYS_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ASRC async system overclocked\n"); |
| if (val[1] & ARIZONA_ASRC_ASYNC_WARP_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ASRC async WARP overclocked\n"); |
| if (val[1] & ARIZONA_ASRC_SYNC_SYS_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ASRC sync system overclocked\n"); |
| if (val[1] & ARIZONA_ASRC_SYNC_WARP_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ASRC sync WARP overclocked\n"); |
| if (val[1] & ARIZONA_ADSP2_1_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "DSP1 overclocked\n"); |
| if (val[1] & ARIZONA_ISRC2_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ISRC2 overclocked\n"); |
| if (val[1] & ARIZONA_ISRC1_OVERCLOCKED_STS) |
| dev_err(arizona->dev, "ISRC1 overclocked\n"); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int arizona_wait_for_boot(struct arizona *arizona) |
| { |
| unsigned int reg; |
| int ret, i; |
| |
| /* |
| * We can't use an interrupt as we need to runtime resume to do so, |
| * we won't race with the interrupt handler as it'll be blocked on |
| * runtime resume. |
| */ |
| for (i = 0; i < 5; i++) { |
| msleep(1); |
| |
| ret = regmap_read(arizona->regmap, |
| ARIZONA_INTERRUPT_RAW_STATUS_5, ®); |
| if (ret != 0) { |
| dev_err(arizona->dev, "Failed to read boot state: %d\n", |
| ret); |
| continue; |
| } |
| |
| if (reg & ARIZONA_BOOT_DONE_STS) |
| break; |
| } |
| |
| if (reg & ARIZONA_BOOT_DONE_STS) { |
| regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5, |
| ARIZONA_BOOT_DONE_STS); |
| } else { |
| dev_err(arizona->dev, "Device boot timed out: %x\n", reg); |
| return -ETIMEDOUT; |
| } |
| |
| pm_runtime_mark_last_busy(arizona->dev); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_RUNTIME |
| static int arizona_runtime_resume(struct device *dev) |
| { |
| struct arizona *arizona = dev_get_drvdata(dev); |
| int ret; |
| |
| ret = regulator_enable(arizona->dcvdd); |
| if (ret != 0) { |
| dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret); |
| return ret; |
| } |
| |
| regcache_cache_only(arizona->regmap, false); |
| |
| ret = arizona_wait_for_boot(arizona); |
| if (ret != 0) { |
| regulator_disable(arizona->dcvdd); |
| return ret; |
| } |
| |
| regcache_sync(arizona->regmap); |
| |
| return 0; |
| } |
| |
| static int arizona_runtime_suspend(struct device *dev) |
| { |
| struct arizona *arizona = dev_get_drvdata(dev); |
| |
| regulator_disable(arizona->dcvdd); |
| regcache_cache_only(arizona->regmap, true); |
| regcache_mark_dirty(arizona->regmap); |
| |
| return 0; |
| } |
| #endif |
| |
| const struct dev_pm_ops arizona_pm_ops = { |
| SET_RUNTIME_PM_OPS(arizona_runtime_suspend, |
| arizona_runtime_resume, |
| NULL) |
| }; |
| EXPORT_SYMBOL_GPL(arizona_pm_ops); |
| |
| static struct mfd_cell early_devs[] = { |
| { .name = "arizona-ldo1" }, |
| }; |
| |
| static struct mfd_cell wm5102_devs[] = { |
| { .name = "arizona-extcon" }, |
| { .name = "arizona-gpio" }, |
| { .name = "arizona-micsupp" }, |
| { .name = "arizona-pwm" }, |
| { .name = "wm5102-codec" }, |
| }; |
| |
| static struct mfd_cell wm5110_devs[] = { |
| { .name = "arizona-extcon" }, |
| { .name = "arizona-gpio" }, |
| { .name = "arizona-micsupp" }, |
| { .name = "arizona-pwm" }, |
| { .name = "wm5110-codec" }, |
| }; |
| |
| int __devinit arizona_dev_init(struct arizona *arizona) |
| { |
| struct device *dev = arizona->dev; |
| const char *type_name; |
| unsigned int reg, val; |
| int ret, i; |
| |
| dev_set_drvdata(arizona->dev, arizona); |
| mutex_init(&arizona->clk_lock); |
| |
| if (dev_get_platdata(arizona->dev)) |
| memcpy(&arizona->pdata, dev_get_platdata(arizona->dev), |
| sizeof(arizona->pdata)); |
| |
| regcache_cache_only(arizona->regmap, true); |
| |
| switch (arizona->type) { |
| case WM5102: |
| case WM5110: |
| for (i = 0; i < ARRAY_SIZE(wm5102_core_supplies); i++) |
| arizona->core_supplies[i].supply |
| = wm5102_core_supplies[i]; |
| arizona->num_core_supplies = ARRAY_SIZE(wm5102_core_supplies); |
| break; |
| default: |
| dev_err(arizona->dev, "Unknown device type %d\n", |
| arizona->type); |
| return -EINVAL; |
| } |
| |
| ret = mfd_add_devices(arizona->dev, -1, early_devs, |
| ARRAY_SIZE(early_devs), NULL, 0); |
| if (ret != 0) { |
| dev_err(dev, "Failed to add early children: %d\n", ret); |
| return ret; |
| } |
| |
| ret = devm_regulator_bulk_get(dev, arizona->num_core_supplies, |
| arizona->core_supplies); |
| if (ret != 0) { |
| dev_err(dev, "Failed to request core supplies: %d\n", |
| ret); |
| goto err_early; |
| } |
| |
| arizona->dcvdd = devm_regulator_get(arizona->dev, "DCVDD"); |
| if (IS_ERR(arizona->dcvdd)) { |
| ret = PTR_ERR(arizona->dcvdd); |
| dev_err(dev, "Failed to request DCVDD: %d\n", ret); |
| goto err_early; |
| } |
| |
| ret = regulator_bulk_enable(arizona->num_core_supplies, |
| arizona->core_supplies); |
| if (ret != 0) { |
| dev_err(dev, "Failed to enable core supplies: %d\n", |
| ret); |
| goto err_early; |
| } |
| |
| ret = regulator_enable(arizona->dcvdd); |
| if (ret != 0) { |
| dev_err(dev, "Failed to enable DCVDD: %d\n", ret); |
| goto err_enable; |
| } |
| |
| if (arizona->pdata.reset) { |
| /* Start out with /RESET low to put the chip into reset */ |
| ret = gpio_request_one(arizona->pdata.reset, |
| GPIOF_DIR_OUT | GPIOF_INIT_LOW, |
| "arizona /RESET"); |
| if (ret != 0) { |
| dev_err(dev, "Failed to request /RESET: %d\n", ret); |
| goto err_dcvdd; |
| } |
| |
| gpio_set_value_cansleep(arizona->pdata.reset, 1); |
| } |
| |
| regcache_cache_only(arizona->regmap, false); |
| |
| ret = regmap_read(arizona->regmap, ARIZONA_SOFTWARE_RESET, ®); |
| if (ret != 0) { |
| dev_err(dev, "Failed to read ID register: %d\n", ret); |
| goto err_reset; |
| } |
| |
| ret = regmap_read(arizona->regmap, ARIZONA_DEVICE_REVISION, |
| &arizona->rev); |
| if (ret != 0) { |
| dev_err(dev, "Failed to read revision register: %d\n", ret); |
| goto err_reset; |
| } |
| arizona->rev &= ARIZONA_DEVICE_REVISION_MASK; |
| |
| switch (reg) { |
| #ifdef CONFIG_MFD_WM5102 |
| case 0x5102: |
| type_name = "WM5102"; |
| if (arizona->type != WM5102) { |
| dev_err(arizona->dev, "WM5102 registered as %d\n", |
| arizona->type); |
| arizona->type = WM5102; |
| } |
| ret = wm5102_patch(arizona); |
| break; |
| #endif |
| #ifdef CONFIG_MFD_WM5110 |
| case 0x5110: |
| type_name = "WM5110"; |
| if (arizona->type != WM5110) { |
| dev_err(arizona->dev, "WM5110 registered as %d\n", |
| arizona->type); |
| arizona->type = WM5110; |
| } |
| ret = wm5110_patch(arizona); |
| break; |
| #endif |
| default: |
| dev_err(arizona->dev, "Unknown device ID %x\n", reg); |
| goto err_reset; |
| } |
| |
| dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A'); |
| |
| if (ret != 0) |
| dev_err(arizona->dev, "Failed to apply patch: %d\n", ret); |
| |
| /* If we have a /RESET GPIO we'll already be reset */ |
| if (!arizona->pdata.reset) { |
| ret = regmap_write(arizona->regmap, ARIZONA_SOFTWARE_RESET, 0); |
| if (ret != 0) { |
| dev_err(dev, "Failed to reset device: %d\n", ret); |
| goto err_reset; |
| } |
| } |
| |
| ret = arizona_wait_for_boot(arizona); |
| if (ret != 0) { |
| dev_err(arizona->dev, "Device failed initial boot: %d\n", ret); |
| goto err_reset; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(arizona->pdata.gpio_defaults); i++) { |
| if (!arizona->pdata.gpio_defaults[i]) |
| continue; |
| |
| regmap_write(arizona->regmap, ARIZONA_GPIO1_CTRL + i, |
| arizona->pdata.gpio_defaults[i]); |
| } |
| |
| pm_runtime_set_autosuspend_delay(arizona->dev, 100); |
| pm_runtime_use_autosuspend(arizona->dev); |
| pm_runtime_enable(arizona->dev); |
| |
| /* Chip default */ |
| if (!arizona->pdata.clk32k_src) |
| arizona->pdata.clk32k_src = ARIZONA_32KZ_MCLK2; |
| |
| switch (arizona->pdata.clk32k_src) { |
| case ARIZONA_32KZ_MCLK1: |
| case ARIZONA_32KZ_MCLK2: |
| regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1, |
| ARIZONA_CLK_32K_SRC_MASK, |
| arizona->pdata.clk32k_src - 1); |
| break; |
| case ARIZONA_32KZ_NONE: |
| regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1, |
| ARIZONA_CLK_32K_SRC_MASK, 2); |
| break; |
| default: |
| dev_err(arizona->dev, "Invalid 32kHz clock source: %d\n", |
| arizona->pdata.clk32k_src); |
| ret = -EINVAL; |
| goto err_reset; |
| } |
| |
| for (i = 0; i < ARIZONA_MAX_INPUT; i++) { |
| /* Default for both is 0 so noop with defaults */ |
| val = arizona->pdata.dmic_ref[i] |
| << ARIZONA_IN1_DMIC_SUP_SHIFT; |
| val |= arizona->pdata.inmode[i] << ARIZONA_IN1_MODE_SHIFT; |
| |
| regmap_update_bits(arizona->regmap, |
| ARIZONA_IN1L_CONTROL + (i * 8), |
| ARIZONA_IN1_DMIC_SUP_MASK | |
| ARIZONA_IN1_MODE_MASK, val); |
| } |
| |
| for (i = 0; i < ARIZONA_MAX_OUTPUT; i++) { |
| /* Default is 0 so noop with defaults */ |
| if (arizona->pdata.out_mono[i]) |
| val = ARIZONA_OUT1_MONO; |
| else |
| val = 0; |
| |
| regmap_update_bits(arizona->regmap, |
| ARIZONA_OUTPUT_PATH_CONFIG_1L + (i * 8), |
| ARIZONA_OUT1_MONO, val); |
| } |
| |
| for (i = 0; i < ARIZONA_MAX_PDM_SPK; i++) { |
| if (arizona->pdata.spk_mute[i]) |
| regmap_update_bits(arizona->regmap, |
| ARIZONA_PDM_SPK1_CTRL_1 + (i * 2), |
| ARIZONA_SPK1_MUTE_ENDIAN_MASK | |
| ARIZONA_SPK1_MUTE_SEQ1_MASK, |
| arizona->pdata.spk_mute[i]); |
| |
| if (arizona->pdata.spk_fmt[i]) |
| regmap_update_bits(arizona->regmap, |
| ARIZONA_PDM_SPK1_CTRL_2 + (i * 2), |
| ARIZONA_SPK1_FMT_MASK, |
| arizona->pdata.spk_fmt[i]); |
| } |
| |
| /* Set up for interrupts */ |
| ret = arizona_irq_init(arizona); |
| if (ret != 0) |
| goto err_reset; |
| |
| arizona_request_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, "CLKGEN error", |
| arizona_clkgen_err, arizona); |
| arizona_request_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, "Overclocked", |
| arizona_overclocked, arizona); |
| arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked", |
| arizona_underclocked, arizona); |
| |
| switch (arizona->type) { |
| case WM5102: |
| ret = mfd_add_devices(arizona->dev, -1, wm5102_devs, |
| ARRAY_SIZE(wm5102_devs), NULL, 0); |
| break; |
| case WM5110: |
| ret = mfd_add_devices(arizona->dev, -1, wm5110_devs, |
| ARRAY_SIZE(wm5102_devs), NULL, 0); |
| break; |
| } |
| |
| if (ret != 0) { |
| dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret); |
| goto err_irq; |
| } |
| |
| #ifdef CONFIG_PM_RUNTIME |
| regulator_disable(arizona->dcvdd); |
| #endif |
| |
| return 0; |
| |
| err_irq: |
| arizona_irq_exit(arizona); |
| err_reset: |
| if (arizona->pdata.reset) { |
| gpio_set_value_cansleep(arizona->pdata.reset, 1); |
| gpio_free(arizona->pdata.reset); |
| } |
| err_dcvdd: |
| regulator_disable(arizona->dcvdd); |
| err_enable: |
| regulator_bulk_disable(arizona->num_core_supplies, |
| arizona->core_supplies); |
| err_early: |
| mfd_remove_devices(dev); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(arizona_dev_init); |
| |
| int __devexit arizona_dev_exit(struct arizona *arizona) |
| { |
| mfd_remove_devices(arizona->dev); |
| arizona_free_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, arizona); |
| arizona_free_irq(arizona, ARIZONA_IRQ_OVERCLOCKED, arizona); |
| arizona_free_irq(arizona, ARIZONA_IRQ_CLKGEN_ERR, arizona); |
| pm_runtime_disable(arizona->dev); |
| arizona_irq_exit(arizona); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(arizona_dev_exit); |