diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 8b93856de432..2afb69b45193 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2099,6 +2099,18 @@ config MFD_WCD934X This driver provides common support WCD934x audio codec and its associated Pin Controller, Soundwire Controller and Audio codec. +config MFD_WCD9335 + tristate "Support for WCD9335 Codec" + depends on SLIMBUS + select REGMAP + select REGMAP_SLIMBUS + select REGMAP_IRQ + select MFD_CORE + help + Support for the Qualcomm WCD9335 Codec. + This driver provides common support WCD9335 audio codec and its + associated Pin Controller, Soundwire Controller and Audio codec. + config MFD_ATC260X tristate select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 7ed3ef4a698c..9107e4b203f3 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -61,6 +61,7 @@ ifeq ($(CONFIG_MFD_CS47L24),y) arizona-objs += cs47l24-tables.o endif obj-$(CONFIG_MFD_WCD934X) += wcd934x.o +obj-$(CONFIG_MFD_WCD9335) += wcd9335.o obj-$(CONFIG_MFD_WM8400) += wm8400-core.o wm831x-objs := wm831x-core.o wm831x-irq.o wm831x-otp.o wm831x-objs += wm831x-auxadc.o diff --git a/drivers/mfd/wcd9335.c b/drivers/mfd/wcd9335.c new file mode 100644 index 000000000000..fa8985f97359 --- /dev/null +++ b/drivers/mfd/wcd9335.c @@ -0,0 +1,300 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2019, Linaro Limited + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define WCD9335_REGMAP_IRQ_REG(_irq, _off, _mask) \ + [_irq] = { \ + .reg_offset = (_off), \ + .mask = (_mask), \ + .type = { \ + .type_reg_offset = (_off), \ + .types_supported = IRQ_TYPE_EDGE_BOTH, \ + .type_reg_mask = (_mask), \ + .type_level_low_val = (_mask), \ + .type_level_high_val = (_mask), \ + .type_falling_val = 0, \ + .type_rising_val = 0, \ + }, \ + } + +static const struct mfd_cell wcd9335_devices[] = { + { + .name = "wcd9335-codec", + }, { + .name = "wcd9335-gpio", + .of_compatible = "qcom,wcd9340-gpio", + }, { + .name = "wcd9335-soundwire", + .of_compatible = "qcom,soundwire-v1.3.0", + }, +}; + +static const struct regmap_irq wcd9335_irqs[] = { + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_SLIMBUS, 0, BIT(0)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_HPH_PA_OCPL_FAULT, 0, BIT(2)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_HPH_PA_OCPR_FAULT, 0, BIT(3)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_MBHC_SW_DET, 1, BIT(0)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_MBHC_ELECT_INS_REM_DET, 1, BIT(1)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_MBHC_BUTTON_PRESS_DET, 1, BIT(2)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_MBHC_BUTTON_RELEASE_DET, 1, BIT(3)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_MBHC_ELECT_INS_REM_LEG_DET, 1, BIT(4)), + WCD9335_REGMAP_IRQ_REG(WCD9335_IRQ_SOUNDWIRE, 2, BIT(4)), +}; + +static const struct regmap_irq_chip wcd9335_regmap_irq_chip = { + .name = "wcd9335_irq", + .status_base = WCD9335_INTR_PIN1_STATUS0, + .mask_base = WCD9335_INTR_PIN1_MASK0, + .ack_base = WCD9335_INTR_PIN1_CLEAR0, + .type_base = WCD9335_INTR_LEVEL0, + .num_type_reg = 4, + .type_in_mask = false, + .num_regs = 4, + .irqs = wcd9335_irqs, + .num_irqs = ARRAY_SIZE(wcd9335_irqs), +}; + +static bool wcd9335_is_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WCD9335_INTR_PIN1_STATUS0...WCD9335_INTR_PIN2_CLEAR3: + case WCD9335_SWR_AHB_BRIDGE_RD_DATA_0: + case WCD9335_SWR_AHB_BRIDGE_RD_DATA_1: + case WCD9335_SWR_AHB_BRIDGE_RD_DATA_2: + case WCD9335_SWR_AHB_BRIDGE_RD_DATA_3: + case WCD9335_SWR_AHB_BRIDGE_ACCESS_STATUS: + case WCD9335_ANA_MBHC_RESULT_3: + case WCD9335_ANA_MBHC_RESULT_2: + case WCD9335_ANA_MBHC_RESULT_1: + case WCD9335_ANA_MBHC_MECH: + case WCD9335_ANA_MBHC_ELECT: + case WCD9335_ANA_MBHC_ZDET: + case WCD9335_ANA_MICB2: + case WCD9335_ANA_RCO: + case WCD9335_ANA_BIAS: + return true; + default: + return false; + } +}; + +static const struct regmap_range_cfg wcd9335_ranges[] = { + { .name = "WCD9335", + .range_min = 0x0, + .range_max = WCD9335_MAX_REGISTER, + .selector_reg = WCD9335_SEL_REGISTER, + .selector_mask = WCD9335_SEL_MASK, + .selector_shift = WCD9335_SEL_SHIFT, + .window_start = WCD9335_WINDOW_START, + .window_len = WCD9335_WINDOW_LENGTH, + }, +}; + +static struct regmap_config wcd9335_regmap_config = { + .reg_bits = 16, + .val_bits = 8, + .cache_type = REGCACHE_RBTREE, + .max_register = 0xffff, + .can_multi_write = true, + .ranges = wcd9335_ranges, + .num_ranges = ARRAY_SIZE(wcd9335_ranges), + .volatile_reg = wcd9335_is_volatile_register, +}; + +static int wcd9335_bring_up(struct wcd9335_ddata *ddata) +{ + struct regmap *regmap = ddata->regmap; + u16 id_minor, id_major; + int ret; + + ret = regmap_bulk_read(regmap, WCD9335_CHIP_TIER_CTRL_CHIP_ID_BYTE0, + (u8 *)&id_minor, sizeof(u16)); + if (ret) + return ret; + + ret = regmap_bulk_read(regmap, WCD9335_CHIP_TIER_CTRL_CHIP_ID_BYTE2, + (u8 *)&id_major, sizeof(u16)); + if (ret) + return ret; + + dev_info(ddata->dev, "WCD934x chip id major 0x%x, minor 0x%x\n", + id_major, id_minor); + + regmap_write(regmap, WCD9335_CODEC_RPM_RST_CTL, 0x01); + regmap_write(regmap, WCD9335_SIDO_NEW_VOUT_A_STARTUP, 0x19); + regmap_write(regmap, WCD9335_SIDO_NEW_VOUT_D_STARTUP, 0x15); + /* Add 1msec delay for VOUT to settle */ + usleep_range(1000, 1100); + regmap_write(regmap, WCD9335_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x5); + regmap_write(regmap, WCD9335_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x7); + regmap_write(regmap, WCD9335_CODEC_RPM_RST_CTL, 0x3); + regmap_write(regmap, WCD9335_CODEC_RPM_RST_CTL, 0x7); + regmap_write(regmap, WCD9335_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x3); + + return 0; +} + +static int wcd9335_slim_status_up(struct slim_device *sdev) +{ + struct device *dev = &sdev->dev; + struct wcd9335_ddata *ddata; + int ret; + + ddata = dev_get_drvdata(dev); + + ddata->regmap = regmap_init_slimbus(sdev, &wcd9335_regmap_config); + if (IS_ERR(ddata->regmap)) { + dev_err(dev, "Error allocating slim regmap\n"); + return PTR_ERR(ddata->regmap); + } + + ret = wcd9335_bring_up(ddata); + if (ret) { + dev_err(dev, "Failed to bring up WCD9335: err = %d\n", ret); + return ret; + } + + ret = devm_regmap_add_irq_chip(dev, ddata->regmap, ddata->irq, + IRQF_TRIGGER_HIGH, 0, + &wcd9335_regmap_irq_chip, + &ddata->irq_data); + if (ret) { + dev_err(dev, "Failed to add IRQ chip: err = %d\n", ret); + return ret; + } + + ret = mfd_add_devices(dev, PLATFORM_DEVID_AUTO, wcd9335_devices, + ARRAY_SIZE(wcd9335_devices), NULL, 0, NULL); + if (ret) { + dev_err(dev, "Failed to add child devices: err = %d\n", + ret); + return ret; + } + + return ret; +} + +static int wcd9335_slim_status(struct slim_device *sdev, + enum slim_device_status status) +{ + switch (status) { + case SLIM_DEVICE_STATUS_UP: + return wcd9335_slim_status_up(sdev); + case SLIM_DEVICE_STATUS_DOWN: + mfd_remove_devices(&sdev->dev); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int wcd9335_slim_probe(struct slim_device *sdev) +{ + struct device *dev = &sdev->dev; + struct device_node *np = dev->of_node; + struct wcd9335_ddata *ddata; + int reset_gpio, ret; + + ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + ddata->irq = of_irq_get(np, 0); + if (ddata->irq < 0) + return dev_err_probe(ddata->dev, ddata->irq, + "Failed to get IRQ\n"); + + reset_gpio = of_get_named_gpio(np, "reset-gpios", 0); + if (reset_gpio < 0) { + dev_err(dev, "Failed to get reset gpio: err = %d\n", + reset_gpio); + return reset_gpio; + } + + ddata->extclk = devm_clk_get(dev, "extclk"); + if (IS_ERR(ddata->extclk)) { + dev_err(dev, "Failed to get extclk"); + return PTR_ERR(ddata->extclk); + } + + ddata->supplies[0].supply = "vdd-buck"; + ddata->supplies[1].supply = "vdd-buck-sido"; + ddata->supplies[2].supply = "vdd-tx"; + ddata->supplies[3].supply = "vdd-rx"; + ddata->supplies[4].supply = "vdd-io"; + + ret = regulator_bulk_get(dev, WCD9335_MAX_SUPPLY, ddata->supplies); + if (ret) { + dev_err(dev, "Failed to get supplies: err = %d\n", ret); + return ret; + } + + ret = regulator_bulk_enable(WCD9335_MAX_SUPPLY, ddata->supplies); + if (ret) { + dev_err(dev, "Failed to enable supplies: err = %d\n", ret); + return ret; + } + + /* + * For WCD9335, it takes about 600us for the Vout_A and + * Vout_D to be ready after BUCK_SIDO is powered up. + * SYS_RST_N shouldn't be pulled high during this time + */ + usleep_range(600, 650); + gpio_direction_output(reset_gpio, 0); + msleep(20); + gpio_set_value(reset_gpio, 1); + msleep(20); + + ddata->dev = dev; + dev_set_drvdata(dev, ddata); + + return 0; +} + +static void wcd9335_slim_remove(struct slim_device *sdev) +{ + struct wcd9335_ddata *ddata = dev_get_drvdata(&sdev->dev); + + regulator_bulk_disable(WCD9335_MAX_SUPPLY, ddata->supplies); + mfd_remove_devices(&sdev->dev); +} + +static const struct slim_device_id wcd9335_slim_id[] = { + { SLIM_MANF_ID_QCOM, SLIM_PROD_CODE_WCD9340, + SLIM_DEV_IDX_WCD9340, SLIM_DEV_INSTANCE_ID_WCD9340 }, + {} +}; + +static struct slim_driver wcd9335_slim_driver = { + .driver = { + .name = "wcd9335-slim", + }, + .probe = wcd9335_slim_probe, + .remove = wcd9335_slim_remove, + .device_status = wcd9335_slim_status, + .id_table = wcd9335_slim_id, +}; + +module_slim_driver(wcd9335_slim_driver); +MODULE_DESCRIPTION("WCD9335 slim driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("slim:217:250:*"); +MODULE_AUTHOR("Srinivas Kandagatla ");