diff options
Diffstat (limited to 'drivers/mfd/arizona-core.c')
| -rw-r--r-- | drivers/mfd/arizona-core.c | 1438 |
1 files changed, 1438 insertions, 0 deletions
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c new file mode 100644 index 000000000..b1c53e040 --- /dev/null +++ b/drivers/mfd/arizona-core.c @@ -0,0 +1,1438 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Arizona core driver + * + * Copyright 2012 Wolfson Microelectronics plc + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/gpio/consumer.h> +#include <linux/interrupt.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/regulator/machine.h> +#include <linux/slab.h> +#include <linux/ktime.h> +#include <linux/platform_device.h> + +#include <linux/mfd/arizona/core.h> +#include <linux/mfd/arizona/registers.h> + +#include "arizona.h" + +static const char * const 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) { + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + ret = pm_runtime_resume_and_get(arizona->dev); + if (ret != 0) + goto err_ref; + ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]); + if (ret != 0) { + pm_runtime_put_sync(arizona->dev); + goto err_ref; + } + break; + case ARIZONA_32KZ_MCLK2: + ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK2]); + if (ret != 0) + goto err_ref; + break; + } + + ret = regmap_update_bits(arizona->regmap, ARIZONA_CLOCK_32K_1, + ARIZONA_CLK_32K_ENA, + ARIZONA_CLK_32K_ENA); + } + +err_ref: + 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) +{ + mutex_lock(&arizona->clk_lock); + + WARN_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); + + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + pm_runtime_put_sync(arizona->dev); + clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK1]); + break; + case ARIZONA_32KZ_MCLK2: + clk_disable_unprepare(arizona->mclk[ARIZONA_MCLK2]); + break; + } + } + + mutex_unlock(&arizona->clk_lock); + + return 0; +} +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_AIF2_UNDERCLOCKED_STS) + dev_err(arizona->dev, "AIF2 underclocked\n"); + if (val & ARIZONA_AIF1_UNDERCLOCKED_STS) + dev_err(arizona->dev, "AIF1 underclocked\n"); + if (val & ARIZONA_ISRC3_UNDERCLOCKED_STS) + dev_err(arizona->dev, "ISRC3 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 dropped sample\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_overclocked(int irq, void *data) +{ + struct arizona *arizona = data; + unsigned int val[3]; + int ret; + + ret = regmap_bulk_read(arizona->regmap, ARIZONA_INTERRUPT_RAW_STATUS_6, + &val[0], 3); + if (ret != 0) { + dev_err(arizona->dev, "Failed to read overclock status: %d\n", + ret); + return IRQ_NONE; + } + + switch (arizona->type) { + case WM8998: + case WM1814: + /* Some bits are shifted on WM8998, + * rearrange to match the standard bit layout + */ + val[0] = ((val[0] & 0x60e0) >> 1) | + ((val[0] & 0x1e00) >> 2) | + (val[0] & 0x000f); + break; + default: + break; + } + + 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_ISRC3_OVERCLOCKED_STS) + dev_err(arizona->dev, "ISRC3 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"); + + if (val[2] & ARIZONA_SPDIF_OVERCLOCKED_STS) + dev_err(arizona->dev, "SPDIF overclocked\n"); + + return IRQ_HANDLED; +} + +#define ARIZONA_REG_POLL_DELAY_US 7500 + +static inline bool arizona_poll_reg_delay(ktime_t timeout) +{ + if (ktime_compare(ktime_get(), timeout) > 0) + return false; + + usleep_range(ARIZONA_REG_POLL_DELAY_US / 2, ARIZONA_REG_POLL_DELAY_US); + + return true; +} + +static int arizona_poll_reg(struct arizona *arizona, + int timeout_ms, unsigned int reg, + unsigned int mask, unsigned int target) +{ + ktime_t timeout = ktime_add_us(ktime_get(), timeout_ms * USEC_PER_MSEC); + unsigned int val = 0; + int ret; + + do { + ret = regmap_read(arizona->regmap, reg, &val); + + if ((val & mask) == target) + return 0; + } while (arizona_poll_reg_delay(timeout)); + + if (ret) { + dev_err(arizona->dev, "Failed polling reg 0x%x: %d\n", + reg, ret); + return ret; + } + + dev_err(arizona->dev, "Polling reg 0x%x timed out: %x\n", reg, val); + return -ETIMEDOUT; +} + +static int arizona_wait_for_boot(struct arizona *arizona) +{ + int ret; + + /* + * 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. + */ + ret = arizona_poll_reg(arizona, 30, ARIZONA_INTERRUPT_RAW_STATUS_5, + ARIZONA_BOOT_DONE_STS, ARIZONA_BOOT_DONE_STS); + + if (!ret) + regmap_write(arizona->regmap, ARIZONA_INTERRUPT_STATUS_5, + ARIZONA_BOOT_DONE_STS); + + pm_runtime_mark_last_busy(arizona->dev); + + return ret; +} + +static inline void arizona_enable_reset(struct arizona *arizona) +{ + if (arizona->pdata.reset) + gpiod_set_raw_value_cansleep(arizona->pdata.reset, 0); +} + +static void arizona_disable_reset(struct arizona *arizona) +{ + if (arizona->pdata.reset) { + switch (arizona->type) { + case WM5110: + case WM8280: + /* Meet requirements for minimum reset duration */ + usleep_range(5000, 10000); + break; + default: + break; + } + + gpiod_set_raw_value_cansleep(arizona->pdata.reset, 1); + usleep_range(1000, 5000); + } +} + +struct arizona_sysclk_state { + unsigned int fll; + unsigned int sysclk; +}; + +static int arizona_enable_freerun_sysclk(struct arizona *arizona, + struct arizona_sysclk_state *state) +{ + int ret, err; + + /* Cache existing FLL and SYSCLK settings */ + ret = regmap_read(arizona->regmap, ARIZONA_FLL1_CONTROL_1, &state->fll); + if (ret) { + dev_err(arizona->dev, "Failed to cache FLL settings: %d\n", + ret); + return ret; + } + ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, + &state->sysclk); + if (ret) { + dev_err(arizona->dev, "Failed to cache SYSCLK settings: %d\n", + ret); + return ret; + } + + /* Start up SYSCLK using the FLL in free running mode */ + ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, + ARIZONA_FLL1_ENA | ARIZONA_FLL1_FREERUN); + if (ret) { + dev_err(arizona->dev, + "Failed to start FLL in freerunning mode: %d\n", + ret); + return ret; + } + ret = arizona_poll_reg(arizona, 180, ARIZONA_INTERRUPT_RAW_STATUS_5, + ARIZONA_FLL1_CLOCK_OK_STS, + ARIZONA_FLL1_CLOCK_OK_STS); + if (ret) + goto err_fll; + + ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, 0x0144); + if (ret) { + dev_err(arizona->dev, "Failed to start SYSCLK: %d\n", ret); + goto err_fll; + } + + return 0; + +err_fll: + err = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll); + if (err) + dev_err(arizona->dev, + "Failed to re-apply old FLL settings: %d\n", err); + + return ret; +} + +static int arizona_disable_freerun_sysclk(struct arizona *arizona, + struct arizona_sysclk_state *state) +{ + int ret; + + ret = regmap_write(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, + state->sysclk); + if (ret) { + dev_err(arizona->dev, + "Failed to re-apply old SYSCLK settings: %d\n", ret); + return ret; + } + + ret = regmap_write(arizona->regmap, ARIZONA_FLL1_CONTROL_1, state->fll); + if (ret) { + dev_err(arizona->dev, + "Failed to re-apply old FLL settings: %d\n", ret); + return ret; + } + + return 0; +} + +static int wm5102_apply_hardware_patch(struct arizona *arizona) +{ + struct arizona_sysclk_state state; + int err, ret; + + ret = arizona_enable_freerun_sysclk(arizona, &state); + if (ret) + return ret; + + /* Start the write sequencer and wait for it to finish */ + ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0, + ARIZONA_WSEQ_ENA | ARIZONA_WSEQ_START | 160); + if (ret) { + dev_err(arizona->dev, "Failed to start write sequencer: %d\n", + ret); + goto err; + } + + ret = arizona_poll_reg(arizona, 30, ARIZONA_WRITE_SEQUENCER_CTRL_1, + ARIZONA_WSEQ_BUSY, 0); + if (ret) + regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_0, + ARIZONA_WSEQ_ABORT); + +err: + err = arizona_disable_freerun_sysclk(arizona, &state); + + return ret ?: err; +} + +/* + * Register patch to some of the CODECs internal write sequences + * to ensure a clean exit from the low power sleep state. + */ +static const struct reg_sequence wm5110_sleep_patch[] = { + { 0x337A, 0xC100 }, + { 0x337B, 0x0041 }, + { 0x3300, 0xA210 }, + { 0x3301, 0x050C }, +}; + +static int wm5110_apply_sleep_patch(struct arizona *arizona) +{ + struct arizona_sysclk_state state; + int err, ret; + + ret = arizona_enable_freerun_sysclk(arizona, &state); + if (ret) + return ret; + + ret = regmap_multi_reg_write_bypassed(arizona->regmap, + wm5110_sleep_patch, + ARRAY_SIZE(wm5110_sleep_patch)); + + err = arizona_disable_freerun_sysclk(arizona, &state); + + return ret ?: err; +} + +static int wm5102_clear_write_sequencer(struct arizona *arizona) +{ + int ret; + + ret = regmap_write(arizona->regmap, ARIZONA_WRITE_SEQUENCER_CTRL_3, + 0x0); + if (ret) { + dev_err(arizona->dev, + "Failed to clear write sequencer state: %d\n", ret); + return ret; + } + + arizona_enable_reset(arizona); + regulator_disable(arizona->dcvdd); + + msleep(20); + + ret = regulator_enable(arizona->dcvdd); + if (ret) { + dev_err(arizona->dev, "Failed to re-enable DCVDD: %d\n", ret); + return ret; + } + arizona_disable_reset(arizona); + + return 0; +} + +#ifdef CONFIG_PM +static int arizona_isolate_dcvdd(struct arizona *arizona) +{ + int ret; + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_ISOLATION_CONTROL, + ARIZONA_ISOLATE_DCVDD1, + ARIZONA_ISOLATE_DCVDD1); + if (ret != 0) + dev_err(arizona->dev, "Failed to isolate DCVDD: %d\n", ret); + + return ret; +} + +static int arizona_connect_dcvdd(struct arizona *arizona) +{ + int ret; + + ret = regmap_update_bits(arizona->regmap, + ARIZONA_ISOLATION_CONTROL, + ARIZONA_ISOLATE_DCVDD1, 0); + if (ret != 0) + dev_err(arizona->dev, "Failed to connect DCVDD: %d\n", ret); + + return ret; +} + +static int arizona_is_jack_det_active(struct arizona *arizona) +{ + unsigned int val; + int ret; + + ret = regmap_read(arizona->regmap, ARIZONA_JACK_DETECT_ANALOGUE, &val); + if (ret) { + dev_err(arizona->dev, + "Failed to check jack det status: %d\n", ret); + return ret; + } else if (val & ARIZONA_JD1_ENA) { + return 1; + } else { + return 0; + } +} + +static int arizona_runtime_resume(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + int ret; + + dev_dbg(arizona->dev, "Leaving AoD mode\n"); + + if (arizona->has_fully_powered_off) { + dev_dbg(arizona->dev, "Re-enabling core supplies\n"); + + ret = regulator_bulk_enable(arizona->num_core_supplies, + arizona->core_supplies); + if (ret) { + dev_err(dev, "Failed to enable core supplies: %d\n", + ret); + return ret; + } + } + + ret = regulator_enable(arizona->dcvdd); + if (ret != 0) { + dev_err(arizona->dev, "Failed to enable DCVDD: %d\n", ret); + if (arizona->has_fully_powered_off) + regulator_bulk_disable(arizona->num_core_supplies, + arizona->core_supplies); + return ret; + } + + if (arizona->has_fully_powered_off) { + arizona_disable_reset(arizona); + enable_irq(arizona->irq); + arizona->has_fully_powered_off = false; + } + + regcache_cache_only(arizona->regmap, false); + + switch (arizona->type) { + case WM5102: + if (arizona->external_dcvdd) { + ret = arizona_connect_dcvdd(arizona); + if (ret != 0) + goto err; + } + + ret = wm5102_patch(arizona); + if (ret != 0) { + dev_err(arizona->dev, "Failed to apply patch: %d\n", + ret); + goto err; + } + + ret = wm5102_apply_hardware_patch(arizona); + if (ret) { + dev_err(arizona->dev, + "Failed to apply hardware patch: %d\n", + ret); + goto err; + } + break; + case WM5110: + case WM8280: + ret = arizona_wait_for_boot(arizona); + if (ret) + goto err; + + if (arizona->external_dcvdd) { + ret = arizona_connect_dcvdd(arizona); + if (ret != 0) + goto err; + } else { + /* + * As this is only called for the internal regulator + * (where we know voltage ranges available) it is ok + * to request an exact range. + */ + ret = regulator_set_voltage(arizona->dcvdd, + 1200000, 1200000); + if (ret < 0) { + dev_err(arizona->dev, + "Failed to set resume voltage: %d\n", + ret); + goto err; + } + } + + ret = wm5110_apply_sleep_patch(arizona); + if (ret) { + dev_err(arizona->dev, + "Failed to re-apply sleep patch: %d\n", + ret); + goto err; + } + break; + case WM1831: + case CS47L24: + ret = arizona_wait_for_boot(arizona); + if (ret != 0) + goto err; + break; + default: + ret = arizona_wait_for_boot(arizona); + if (ret != 0) + goto err; + + if (arizona->external_dcvdd) { + ret = arizona_connect_dcvdd(arizona); + if (ret != 0) + goto err; + } + break; + } + + ret = regcache_sync(arizona->regmap); + if (ret != 0) { + dev_err(arizona->dev, "Failed to restore register cache\n"); + goto err; + } + + return 0; + +err: + regcache_cache_only(arizona->regmap, true); + regulator_disable(arizona->dcvdd); + return ret; +} + +static int arizona_runtime_suspend(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + int jd_active = 0; + int ret; + + dev_dbg(arizona->dev, "Entering AoD mode\n"); + + switch (arizona->type) { + case WM5110: + case WM8280: + jd_active = arizona_is_jack_det_active(arizona); + if (jd_active < 0) + return jd_active; + + if (arizona->external_dcvdd) { + ret = arizona_isolate_dcvdd(arizona); + if (ret != 0) + return ret; + } else { + /* + * As this is only called for the internal regulator + * (where we know voltage ranges available) it is ok + * to request an exact range. + */ + ret = regulator_set_voltage(arizona->dcvdd, + 1175000, 1175000); + if (ret < 0) { + dev_err(arizona->dev, + "Failed to set suspend voltage: %d\n", + ret); + return ret; + } + } + break; + case WM5102: + jd_active = arizona_is_jack_det_active(arizona); + if (jd_active < 0) + return jd_active; + + if (arizona->external_dcvdd) { + ret = arizona_isolate_dcvdd(arizona); + if (ret != 0) + return ret; + } + + if (!jd_active) { + ret = regmap_write(arizona->regmap, + ARIZONA_WRITE_SEQUENCER_CTRL_3, 0x0); + if (ret) { + dev_err(arizona->dev, + "Failed to clear write sequencer: %d\n", + ret); + return ret; + } + } + break; + case WM1831: + case CS47L24: + break; + default: + jd_active = arizona_is_jack_det_active(arizona); + if (jd_active < 0) + return jd_active; + + if (arizona->external_dcvdd) { + ret = arizona_isolate_dcvdd(arizona); + if (ret != 0) + return ret; + } + break; + } + + regcache_cache_only(arizona->regmap, true); + regcache_mark_dirty(arizona->regmap); + regulator_disable(arizona->dcvdd); + + /* Allow us to completely power down if no jack detection */ + if (!jd_active) { + dev_dbg(arizona->dev, "Fully powering off\n"); + + arizona->has_fully_powered_off = true; + + disable_irq_nosync(arizona->irq); + arizona_enable_reset(arizona); + regulator_bulk_disable(arizona->num_core_supplies, + arizona->core_supplies); + } + + return 0; +} +#endif + +#ifdef CONFIG_PM_SLEEP +static int arizona_suspend(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + + dev_dbg(arizona->dev, "Suspend, disabling IRQ\n"); + disable_irq(arizona->irq); + + return 0; +} + +static int arizona_suspend_noirq(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + + dev_dbg(arizona->dev, "Late suspend, reenabling IRQ\n"); + enable_irq(arizona->irq); + + return 0; +} + +static int arizona_resume_noirq(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + + dev_dbg(arizona->dev, "Early resume, disabling IRQ\n"); + disable_irq(arizona->irq); + + return 0; +} + +static int arizona_resume(struct device *dev) +{ + struct arizona *arizona = dev_get_drvdata(dev); + + dev_dbg(arizona->dev, "Resume, reenabling IRQ\n"); + enable_irq(arizona->irq); + + return 0; +} +#endif + +const struct dev_pm_ops arizona_pm_ops = { + SET_RUNTIME_PM_OPS(arizona_runtime_suspend, + arizona_runtime_resume, + NULL) + SET_SYSTEM_SLEEP_PM_OPS(arizona_suspend, arizona_resume) + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(arizona_suspend_noirq, + arizona_resume_noirq) +}; +EXPORT_SYMBOL_GPL(arizona_pm_ops); + +#ifdef CONFIG_OF +static int arizona_of_get_core_pdata(struct arizona *arizona) +{ + struct arizona_pdata *pdata = &arizona->pdata; + int ret, i; + + /* Handle old non-standard DT binding */ + pdata->reset = devm_gpiod_get(arizona->dev, "wlf,reset", GPIOD_OUT_LOW); + if (IS_ERR(pdata->reset)) { + ret = PTR_ERR(pdata->reset); + + /* + * Reset missing will be caught when other binding is read + * but all other errors imply this binding is in use but has + * encountered a problem so should be handled. + */ + if (ret == -EPROBE_DEFER) + return ret; + else if (ret != -ENOENT && ret != -ENOSYS) + dev_err(arizona->dev, "Reset GPIO malformed: %d\n", + ret); + + pdata->reset = NULL; + } + + ret = of_property_read_u32_array(arizona->dev->of_node, + "wlf,gpio-defaults", + pdata->gpio_defaults, + ARRAY_SIZE(pdata->gpio_defaults)); + if (ret >= 0) { + /* + * All values are literal except out of range values + * which are chip default, translate into platform + * data which uses 0 as chip default and out of range + * as zero. + */ + for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) { + if (pdata->gpio_defaults[i] > 0xffff) + pdata->gpio_defaults[i] = 0; + else if (pdata->gpio_defaults[i] == 0) + pdata->gpio_defaults[i] = 0x10000; + } + } else { + dev_err(arizona->dev, "Failed to parse GPIO defaults: %d\n", + ret); + } + + return 0; +} +#else +static inline int arizona_of_get_core_pdata(struct arizona *arizona) +{ + return 0; +} +#endif + +static const struct mfd_cell early_devs[] = { + { .name = "arizona-ldo1" }, +}; + +static const char * const wm5102_supplies[] = { + "MICVDD", + "DBVDD2", + "DBVDD3", + "CPVDD", + "SPKVDDL", + "SPKVDDR", +}; + +static const struct mfd_cell wm5102_devs[] = { + { .name = "arizona-micsupp" }, + { .name = "arizona-gpio" }, + { .name = "arizona-haptics" }, + { .name = "arizona-pwm" }, + { + .name = "wm5102-codec", + .parent_supplies = wm5102_supplies, + .num_parent_supplies = ARRAY_SIZE(wm5102_supplies), + }, +}; + +static const struct mfd_cell wm5110_devs[] = { + { .name = "arizona-micsupp" }, + { .name = "arizona-gpio" }, + { .name = "arizona-haptics" }, + { .name = "arizona-pwm" }, + { + .name = "wm5110-codec", + .parent_supplies = wm5102_supplies, + .num_parent_supplies = ARRAY_SIZE(wm5102_supplies), + }, +}; + +static const char * const cs47l24_supplies[] = { + "MICVDD", + "CPVDD", + "SPKVDD", +}; + +static const struct mfd_cell cs47l24_devs[] = { + { .name = "arizona-gpio" }, + { .name = "arizona-haptics" }, + { .name = "arizona-pwm" }, + { + .name = "cs47l24-codec", + .parent_supplies = cs47l24_supplies, + .num_parent_supplies = ARRAY_SIZE(cs47l24_supplies), + }, +}; + +static const char * const wm8997_supplies[] = { + "MICVDD", + "DBVDD2", + "CPVDD", + "SPKVDD", +}; + +static const struct mfd_cell wm8997_devs[] = { + { .name = "arizona-micsupp" }, + { .name = "arizona-gpio" }, + { .name = "arizona-haptics" }, + { .name = "arizona-pwm" }, + { + .name = "wm8997-codec", + .parent_supplies = wm8997_supplies, + .num_parent_supplies = ARRAY_SIZE(wm8997_supplies), + }, +}; + +static const struct mfd_cell wm8998_devs[] = { + { .name = "arizona-micsupp" }, + { .name = "arizona-gpio" }, + { .name = "arizona-haptics" }, + { .name = "arizona-pwm" }, + { + .name = "wm8998-codec", + .parent_supplies = wm5102_supplies, + .num_parent_supplies = ARRAY_SIZE(wm5102_supplies), + }, +}; + +int arizona_dev_init(struct arizona *arizona) +{ + static const char * const mclk_name[] = { "mclk1", "mclk2" }; + struct device *dev = arizona->dev; + const char *type_name = NULL; + unsigned int reg, val; + int (*apply_patch)(struct arizona *) = NULL; + const struct mfd_cell *subdevs = NULL; + int n_subdevs = 0, 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)); + } else { + ret = arizona_of_get_core_pdata(arizona); + if (ret < 0) + return ret; + } + + BUILD_BUG_ON(ARRAY_SIZE(arizona->mclk) != ARRAY_SIZE(mclk_name)); + for (i = 0; i < ARRAY_SIZE(arizona->mclk); i++) { + arizona->mclk[i] = devm_clk_get(arizona->dev, mclk_name[i]); + if (IS_ERR(arizona->mclk[i])) { + dev_info(arizona->dev, "Failed to get %s: %ld\n", + mclk_name[i], PTR_ERR(arizona->mclk[i])); + arizona->mclk[i] = NULL; + } + } + + regcache_cache_only(arizona->regmap, true); + + switch (arizona->type) { + case WM5102: + case WM5110: + case WM8280: + case WM8997: + case WM8998: + case WM1814: + case WM1831: + case CS47L24: + 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 -ENODEV; + } + + /* Mark DCVDD as external, LDO1 driver will clear if internal */ + arizona->external_dcvdd = true; + + switch (arizona->type) { + case WM1831: + case CS47L24: + break; /* No LDO1 regulator */ + default: + ret = mfd_add_devices(arizona->dev, -1, early_devs, + ARRAY_SIZE(early_devs), NULL, 0, NULL); + if (ret != 0) { + dev_err(dev, "Failed to add early children: %d\n", ret); + return ret; + } + break; + } + + 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; + } + + /** + * Don't use devres here because the only device we have to get + * against is the MFD device and DCVDD will likely be supplied by + * one of its children. Meaning that the regulator will be + * destroyed by the time devres calls regulator put. + */ + arizona->dcvdd = 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; + } + + if (!arizona->pdata.reset) { + /* Start out with /RESET low to put the chip into reset */ + arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(arizona->pdata.reset)) { + ret = PTR_ERR(arizona->pdata.reset); + if (ret == -EPROBE_DEFER) + goto err_dcvdd; + + dev_err(arizona->dev, + "Reset GPIO missing/malformed: %d\n", ret); + + arizona->pdata.reset = NULL; + } + } + + 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_dcvdd; + } + + ret = regulator_enable(arizona->dcvdd); + if (ret != 0) { + dev_err(dev, "Failed to enable DCVDD: %d\n", ret); + goto err_enable; + } + + arizona_disable_reset(arizona); + + regcache_cache_only(arizona->regmap, false); + + /* Verify that this is a chip we know about */ + 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; + } + + switch (reg) { + case 0x5102: + case 0x5110: + case 0x6349: + case 0x6363: + case 0x8997: + break; + default: + dev_err(arizona->dev, "Unknown device ID: %x\n", reg); + ret = -ENODEV; + goto err_reset; + } + + /* 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; + } + + usleep_range(1000, 5000); + } + + /* Ensure device startup is complete */ + switch (arizona->type) { + case WM5102: + ret = regmap_read(arizona->regmap, + ARIZONA_WRITE_SEQUENCER_CTRL_3, &val); + if (ret) { + dev_err(dev, + "Failed to check write sequencer state: %d\n", + ret); + } else if (val & 0x01) { + ret = wm5102_clear_write_sequencer(arizona); + if (ret) + return ret; + } + break; + default: + break; + } + + ret = arizona_wait_for_boot(arizona); + if (ret) { + dev_err(arizona->dev, "Device failed initial boot: %d\n", ret); + goto err_reset; + } + + /* Read the device ID information & do device specific stuff */ + 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) { + case 0x5102: + if (IS_ENABLED(CONFIG_MFD_WM5102)) { + type_name = "WM5102"; + if (arizona->type != WM5102) { + dev_warn(arizona->dev, + "WM5102 registered as %d\n", + arizona->type); + arizona->type = WM5102; + } + + apply_patch = wm5102_patch; + arizona->rev &= 0x7; + subdevs = wm5102_devs; + n_subdevs = ARRAY_SIZE(wm5102_devs); + } + break; + case 0x5110: + if (IS_ENABLED(CONFIG_MFD_WM5110)) { + switch (arizona->type) { + case WM5110: + type_name = "WM5110"; + break; + case WM8280: + type_name = "WM8280"; + break; + default: + type_name = "WM5110"; + dev_warn(arizona->dev, + "WM5110 registered as %d\n", + arizona->type); + arizona->type = WM5110; + break; + } + + apply_patch = wm5110_patch; + subdevs = wm5110_devs; + n_subdevs = ARRAY_SIZE(wm5110_devs); + } + break; + case 0x6363: + if (IS_ENABLED(CONFIG_MFD_CS47L24)) { + switch (arizona->type) { + case CS47L24: + type_name = "CS47L24"; + break; + + case WM1831: + type_name = "WM1831"; + break; + + default: + dev_warn(arizona->dev, + "CS47L24 registered as %d\n", + arizona->type); + arizona->type = CS47L24; + break; + } + + apply_patch = cs47l24_patch; + subdevs = cs47l24_devs; + n_subdevs = ARRAY_SIZE(cs47l24_devs); + } + break; + case 0x8997: + if (IS_ENABLED(CONFIG_MFD_WM8997)) { + type_name = "WM8997"; + if (arizona->type != WM8997) { + dev_warn(arizona->dev, + "WM8997 registered as %d\n", + arizona->type); + arizona->type = WM8997; + } + + apply_patch = wm8997_patch; + subdevs = wm8997_devs; + n_subdevs = ARRAY_SIZE(wm8997_devs); + } + break; + case 0x6349: + if (IS_ENABLED(CONFIG_MFD_WM8998)) { + switch (arizona->type) { + case WM8998: + type_name = "WM8998"; + break; + + case WM1814: + type_name = "WM1814"; + break; + + default: + type_name = "WM8998"; + dev_warn(arizona->dev, + "WM8998 registered as %d\n", + arizona->type); + arizona->type = WM8998; + } + + apply_patch = wm8998_patch; + subdevs = wm8998_devs; + n_subdevs = ARRAY_SIZE(wm8998_devs); + } + break; + default: + dev_err(arizona->dev, "Unknown device ID %x\n", reg); + ret = -ENODEV; + goto err_reset; + } + + if (!subdevs) { + dev_err(arizona->dev, + "No kernel support for device ID %x\n", reg); + ret = -ENODEV; + goto err_reset; + } + + dev_info(dev, "%s revision %c\n", type_name, arizona->rev + 'A'); + + if (apply_patch) { + ret = apply_patch(arizona); + if (ret != 0) { + dev_err(arizona->dev, "Failed to apply patch: %d\n", + ret); + goto err_reset; + } + + switch (arizona->type) { + case WM5102: + ret = wm5102_apply_hardware_patch(arizona); + if (ret) { + dev_err(arizona->dev, + "Failed to apply hardware patch: %d\n", + ret); + goto err_reset; + } + break; + case WM5110: + case WM8280: + ret = wm5110_apply_sleep_patch(arizona); + if (ret) { + dev_err(arizona->dev, + "Failed to apply sleep patch: %d\n", + ret); + goto err_reset; + } + break; + default: + break; + } + } + + 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]); + } + + /* 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); + arizona_clk32k_enable(arizona); + 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_MICBIAS; i++) { + if (!arizona->pdata.micbias[i].mV && + !arizona->pdata.micbias[i].bypass) + continue; + + /* Apply default for bypass mode */ + if (!arizona->pdata.micbias[i].mV) + arizona->pdata.micbias[i].mV = 2800; + + val = (arizona->pdata.micbias[i].mV - 1500) / 100; + + val <<= ARIZONA_MICB1_LVL_SHIFT; + + if (arizona->pdata.micbias[i].ext_cap) + val |= ARIZONA_MICB1_EXT_CAP; + + if (arizona->pdata.micbias[i].discharge) + val |= ARIZONA_MICB1_DISCH; + + if (arizona->pdata.micbias[i].soft_start) + val |= ARIZONA_MICB1_RATE; + + if (arizona->pdata.micbias[i].bypass) + val |= ARIZONA_MICB1_BYPASS; + + regmap_update_bits(arizona->regmap, + ARIZONA_MIC_BIAS_CTRL_1 + i, + ARIZONA_MICB1_LVL_MASK | + ARIZONA_MICB1_EXT_CAP | + ARIZONA_MICB1_DISCH | + ARIZONA_MICB1_BYPASS | + ARIZONA_MICB1_RATE, val); + } + + pm_runtime_set_active(arizona->dev); + pm_runtime_enable(arizona->dev); + + /* Set up for interrupts */ + ret = arizona_irq_init(arizona); + if (ret != 0) + goto err_pm; + + pm_runtime_set_autosuspend_delay(arizona->dev, 100); + pm_runtime_use_autosuspend(arizona->dev); + + 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); + + ret = mfd_add_devices(arizona->dev, PLATFORM_DEVID_NONE, + subdevs, n_subdevs, NULL, 0, NULL); + + if (ret) { + dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret); + goto err_irq; + } + + return 0; + +err_irq: + arizona_irq_exit(arizona); +err_pm: + pm_runtime_disable(arizona->dev); + + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } +err_reset: + arizona_enable_reset(arizona); + regulator_disable(arizona->dcvdd); +err_enable: + regulator_bulk_disable(arizona->num_core_supplies, + arizona->core_supplies); +err_dcvdd: + regulator_put(arizona->dcvdd); +err_early: + mfd_remove_devices(dev); + return ret; +} +EXPORT_SYMBOL_GPL(arizona_dev_init); + +int arizona_dev_exit(struct arizona *arizona) +{ + disable_irq(arizona->irq); + pm_runtime_disable(arizona->dev); + + regulator_disable(arizona->dcvdd); + regulator_put(arizona->dcvdd); + + switch (arizona->pdata.clk32k_src) { + case ARIZONA_32KZ_MCLK1: + case ARIZONA_32KZ_MCLK2: + arizona_clk32k_disable(arizona); + break; + default: + break; + } + + 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); + arizona_irq_exit(arizona); + arizona_enable_reset(arizona); + + regulator_bulk_disable(arizona->num_core_supplies, + arizona->core_supplies); + return 0; +} +EXPORT_SYMBOL_GPL(arizona_dev_exit); + +MODULE_LICENSE("GPL v2"); |