// 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 #define WCD934X_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 wcd934x_devices[] = { { .name = "wcd934x-codec", }, { .name = "wcd934x-gpio", .of_compatible = "qcom,wcd9340-gpio", }, { .name = "wcd934x-soundwire", .of_compatible = "qcom,soundwire-v1.3.0", }, }; static const struct regmap_irq wcd934x_irqs[] = { WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_SLIMBUS, 0, BIT(0)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_HPH_PA_OCPL_FAULT, 0, BIT(2)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_HPH_PA_OCPR_FAULT, 0, BIT(3)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_MBHC_SW_DET, 1, BIT(0)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_MBHC_ELECT_INS_REM_DET, 1, BIT(1)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_MBHC_BUTTON_PRESS_DET, 1, BIT(2)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_MBHC_BUTTON_RELEASE_DET, 1, BIT(3)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_MBHC_ELECT_INS_REM_LEG_DET, 1, BIT(4)), WCD934X_REGMAP_IRQ_REG(WCD934X_IRQ_SOUNDWIRE, 2, BIT(4)), }; static const unsigned int wcd934x_config_regs[] = { WCD934X_INTR_LEVEL0, }; static const struct regmap_irq_chip wcd934x_regmap_irq_chip = { .name = "wcd934x_irq", .status_base = WCD934X_INTR_PIN1_STATUS0, .mask_base = WCD934X_INTR_PIN1_MASK0, .ack_base = WCD934X_INTR_PIN1_CLEAR0, .num_regs = 4, .irqs = wcd934x_irqs, .num_irqs = ARRAY_SIZE(wcd934x_irqs), .config_base = wcd934x_config_regs, .num_config_bases = ARRAY_SIZE(wcd934x_config_regs), .num_config_regs = 4, .set_type_config = regmap_irq_set_type_config_simple, }; static bool wcd934x_is_volatile_register(struct device *dev, unsigned int reg) { switch (reg) { case WCD934X_INTR_PIN1_STATUS0...WCD934X_INTR_PIN2_CLEAR3: case WCD934X_SWR_AHB_BRIDGE_RD_DATA_0: case WCD934X_SWR_AHB_BRIDGE_RD_DATA_1: case WCD934X_SWR_AHB_BRIDGE_RD_DATA_2: case WCD934X_SWR_AHB_BRIDGE_RD_DATA_3: case WCD934X_SWR_AHB_BRIDGE_ACCESS_STATUS: case WCD934X_ANA_MBHC_RESULT_3: case WCD934X_ANA_MBHC_RESULT_2: case WCD934X_ANA_MBHC_RESULT_1: case WCD934X_ANA_MBHC_MECH: case WCD934X_ANA_MBHC_ELECT: case WCD934X_ANA_MBHC_ZDET: case WCD934X_ANA_MICB2: case WCD934X_ANA_RCO: case WCD934X_ANA_BIAS: return true; default: return false; } }; static const struct regmap_range_cfg wcd934x_ranges[] = { { .name = "WCD934X", .range_min = 0x0, .range_max = WCD934X_MAX_REGISTER, .selector_reg = WCD934X_SEL_REGISTER, .selector_mask = WCD934X_SEL_MASK, .selector_shift = WCD934X_SEL_SHIFT, .window_start = WCD934X_WINDOW_START, .window_len = WCD934X_WINDOW_LENGTH, }, }; static const struct regmap_config wcd934x_regmap_config = { .reg_bits = 16, .val_bits = 8, .cache_type = REGCACHE_MAPLE, .max_register = 0xffff, .can_multi_write = true, .ranges = wcd934x_ranges, .num_ranges = ARRAY_SIZE(wcd934x_ranges), .volatile_reg = wcd934x_is_volatile_register, }; static int wcd934x_bring_up(struct wcd934x_ddata *ddata) { struct regmap *regmap = ddata->regmap; u16 id_minor, id_major; int ret; ret = regmap_bulk_read(regmap, WCD934X_CHIP_TIER_CTRL_CHIP_ID_BYTE0, (u8 *)&id_minor, sizeof(u16)); if (ret) return ret; ret = regmap_bulk_read(regmap, WCD934X_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, WCD934X_CODEC_RPM_RST_CTL, 0x01); regmap_write(regmap, WCD934X_SIDO_NEW_VOUT_A_STARTUP, 0x19); regmap_write(regmap, WCD934X_SIDO_NEW_VOUT_D_STARTUP, 0x15); /* Add 1msec delay for VOUT to settle */ usleep_range(1000, 1100); regmap_write(regmap, WCD934X_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x5); regmap_write(regmap, WCD934X_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x7); regmap_write(regmap, WCD934X_CODEC_RPM_RST_CTL, 0x3); regmap_write(regmap, WCD934X_CODEC_RPM_RST_CTL, 0x7); regmap_write(regmap, WCD934X_CODEC_RPM_PWR_CDC_DIG_HM_CTL, 0x3); return 0; } static int wcd934x_slim_status_up(struct slim_device *sdev) { struct device *dev = &sdev->dev; struct wcd934x_ddata *ddata; int ret; ddata = dev_get_drvdata(dev); ddata->regmap = regmap_init_slimbus(sdev, &wcd934x_regmap_config); if (IS_ERR(ddata->regmap)) { dev_err(dev, "Error allocating slim regmap\n"); return PTR_ERR(ddata->regmap); } ret = wcd934x_bring_up(ddata); if (ret) { dev_err(dev, "Failed to bring up WCD934X: err = %d\n", ret); return ret; } ret = devm_regmap_add_irq_chip(dev, ddata->regmap, ddata->irq, IRQF_TRIGGER_HIGH, 0, &wcd934x_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, wcd934x_devices, ARRAY_SIZE(wcd934x_devices), NULL, 0, NULL); if (ret) { dev_err(dev, "Failed to add child devices: err = %d\n", ret); return ret; } return ret; } static int wcd934x_slim_status(struct slim_device *sdev, enum slim_device_status status) { switch (status) { case SLIM_DEVICE_STATUS_UP: return wcd934x_slim_status_up(sdev); case SLIM_DEVICE_STATUS_DOWN: mfd_remove_devices(&sdev->dev); break; default: return -EINVAL; } return 0; } static int wcd934x_slim_probe(struct slim_device *sdev) { struct device *dev = &sdev->dev; struct device_node *np = dev->of_node; struct wcd934x_ddata *ddata; struct gpio_desc *reset_gpio; int 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"); ddata->extclk = devm_clk_get(dev, "extclk"); if (IS_ERR(ddata->extclk)) return dev_err_probe(dev, PTR_ERR(ddata->extclk), "Failed to get 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, WCD934X_MAX_SUPPLY, ddata->supplies); if (ret) return dev_err_probe(dev, ret, "Failed to get supplies\n"); ret = regulator_bulk_enable(WCD934X_MAX_SUPPLY, ddata->supplies); if (ret) return dev_err_probe(dev, ret, "Failed to enable supplies\n"); /* * For WCD934X, 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); reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(reset_gpio)) { ret = dev_err_probe(dev, PTR_ERR(reset_gpio), "Failed to get reset gpio\n"); goto err_disable_regulators; } msleep(20); gpiod_set_value(reset_gpio, 1); msleep(20); ddata->dev = dev; dev_set_drvdata(dev, ddata); return 0; err_disable_regulators: regulator_bulk_disable(WCD934X_MAX_SUPPLY, ddata->supplies); return ret; } static void wcd934x_slim_remove(struct slim_device *sdev) { struct wcd934x_ddata *ddata = dev_get_drvdata(&sdev->dev); regulator_bulk_disable(WCD934X_MAX_SUPPLY, ddata->supplies); mfd_remove_devices(&sdev->dev); } static const struct slim_device_id wcd934x_slim_id[] = { { SLIM_MANF_ID_QCOM, SLIM_PROD_CODE_WCD9340, SLIM_DEV_IDX_WCD9340, SLIM_DEV_INSTANCE_ID_WCD9340 }, {} }; static struct slim_driver wcd934x_slim_driver = { .driver = { .name = "wcd934x-slim", }, .probe = wcd934x_slim_probe, .remove = wcd934x_slim_remove, .device_status = wcd934x_slim_status, .id_table = wcd934x_slim_id, }; module_slim_driver(wcd934x_slim_driver); MODULE_DESCRIPTION("WCD934X slim driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("slim:217:250:*"); MODULE_AUTHOR("Srinivas Kandagatla ");