| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Baolin Wang | 1133 | 90.28% | 3 | 27.27% |
| Chunyan Zhang | 51 | 4.06% | 2 | 18.18% |
| Mark Brown | 38 | 3.03% | 1 | 9.09% |
| Cixi Geng | 23 | 1.83% | 2 | 18.18% |
| Kees Cook | 5 | 0.40% | 1 | 9.09% |
| Lee Jones | 3 | 0.24% | 1 | 9.09% |
| Thomas Gleixner | 2 | 0.16% | 1 | 9.09% |
| Total | 1255 | 11 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2017 Spreadtrum Communications Inc. */ #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mfd/core.h> #include <linux/mfd/sc27xx-pmic.h> #include <linux/of_device.h> #include <linux/of_platform.h> #include <linux/regmap.h> #include <linux/spi/spi.h> #include <uapi/linux/usb/charger.h> #define SPRD_PMIC_INT_MASK_STATUS 0x0 #define SPRD_PMIC_INT_RAW_STATUS 0x4 #define SPRD_PMIC_INT_EN 0x8 #define SPRD_SC2730_IRQ_BASE 0x80 #define SPRD_SC2730_IRQ_NUMS 10 #define SPRD_SC2730_CHG_DET 0x1b9c #define SPRD_SC2731_IRQ_BASE 0x140 #define SPRD_SC2731_IRQ_NUMS 16 #define SPRD_SC2731_CHG_DET 0xedc /* PMIC charger detection definition */ #define SPRD_PMIC_CHG_DET_DELAY_US 200000 #define SPRD_PMIC_CHG_DET_TIMEOUT 2000000 #define SPRD_PMIC_CHG_DET_DONE BIT(11) #define SPRD_PMIC_SDP_TYPE BIT(7) #define SPRD_PMIC_DCP_TYPE BIT(6) #define SPRD_PMIC_CDP_TYPE BIT(5) #define SPRD_PMIC_CHG_TYPE_MASK GENMASK(7, 5) struct sprd_pmic { struct regmap *regmap; struct device *dev; struct regmap_irq *irqs; struct regmap_irq_chip irq_chip; struct regmap_irq_chip_data *irq_data; const struct sprd_pmic_data *pdata; int irq; }; struct sprd_pmic_data { u32 irq_base; u32 num_irqs; u32 charger_det; }; /* * Since different PMICs of SC27xx series can have different interrupt * base address and irq number, we should save irq number and irq base * in the device data structure. */ static const struct sprd_pmic_data sc2730_data = { .irq_base = SPRD_SC2730_IRQ_BASE, .num_irqs = SPRD_SC2730_IRQ_NUMS, .charger_det = SPRD_SC2730_CHG_DET, }; static const struct sprd_pmic_data sc2731_data = { .irq_base = SPRD_SC2731_IRQ_BASE, .num_irqs = SPRD_SC2731_IRQ_NUMS, .charger_det = SPRD_SC2731_CHG_DET, }; enum usb_charger_type sprd_pmic_detect_charger_type(struct device *dev) { struct spi_device *spi = to_spi_device(dev); struct sprd_pmic *ddata = spi_get_drvdata(spi); const struct sprd_pmic_data *pdata = ddata->pdata; enum usb_charger_type type; u32 val; int ret; ret = regmap_read_poll_timeout(ddata->regmap, pdata->charger_det, val, (val & SPRD_PMIC_CHG_DET_DONE), SPRD_PMIC_CHG_DET_DELAY_US, SPRD_PMIC_CHG_DET_TIMEOUT); if (ret) { dev_err(&spi->dev, "failed to detect charger type\n"); return UNKNOWN_TYPE; } switch (val & SPRD_PMIC_CHG_TYPE_MASK) { case SPRD_PMIC_CDP_TYPE: type = CDP_TYPE; break; case SPRD_PMIC_DCP_TYPE: type = DCP_TYPE; break; case SPRD_PMIC_SDP_TYPE: type = SDP_TYPE; break; default: type = UNKNOWN_TYPE; break; } return type; } EXPORT_SYMBOL_GPL(sprd_pmic_detect_charger_type); static int sprd_pmic_spi_write(void *context, const void *data, size_t count) { struct device *dev = context; struct spi_device *spi = to_spi_device(dev); return spi_write(spi, data, count); } static int sprd_pmic_spi_read(void *context, const void *reg, size_t reg_size, void *val, size_t val_size) { struct device *dev = context; struct spi_device *spi = to_spi_device(dev); u32 rx_buf[2] = { 0 }; int ret; /* Now we only support one PMIC register to read every time. */ if (reg_size != sizeof(u32) || val_size != sizeof(u32)) return -EINVAL; /* Copy address to read from into first element of SPI buffer. */ memcpy(rx_buf, reg, sizeof(u32)); ret = spi_read(spi, rx_buf, 1); if (ret < 0) return ret; memcpy(val, rx_buf, val_size); return 0; } static struct regmap_bus sprd_pmic_regmap = { .write = sprd_pmic_spi_write, .read = sprd_pmic_spi_read, .reg_format_endian_default = REGMAP_ENDIAN_NATIVE, .val_format_endian_default = REGMAP_ENDIAN_NATIVE, }; static const struct regmap_config sprd_pmic_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .max_register = 0xffff, }; static int sprd_pmic_probe(struct spi_device *spi) { struct sprd_pmic *ddata; const struct sprd_pmic_data *pdata; int ret, i; pdata = of_device_get_match_data(&spi->dev); if (!pdata) { dev_err(&spi->dev, "No matching driver data found\n"); return -EINVAL; } ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); if (!ddata) return -ENOMEM; ddata->regmap = devm_regmap_init(&spi->dev, &sprd_pmic_regmap, &spi->dev, &sprd_pmic_config); if (IS_ERR(ddata->regmap)) { ret = PTR_ERR(ddata->regmap); dev_err(&spi->dev, "Failed to allocate register map %d\n", ret); return ret; } spi_set_drvdata(spi, ddata); ddata->dev = &spi->dev; ddata->irq = spi->irq; ddata->pdata = pdata; ddata->irq_chip.name = dev_name(&spi->dev); ddata->irq_chip.status_base = pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS; ddata->irq_chip.mask_base = pdata->irq_base + SPRD_PMIC_INT_EN; ddata->irq_chip.ack_base = 0; ddata->irq_chip.num_regs = 1; ddata->irq_chip.num_irqs = pdata->num_irqs; ddata->irq_chip.mask_invert = true; ddata->irqs = devm_kcalloc(&spi->dev, pdata->num_irqs, sizeof(struct regmap_irq), GFP_KERNEL); if (!ddata->irqs) return -ENOMEM; ddata->irq_chip.irqs = ddata->irqs; for (i = 0; i < pdata->num_irqs; i++) ddata->irqs[i].mask = BIT(i); ret = devm_regmap_add_irq_chip(&spi->dev, ddata->regmap, ddata->irq, IRQF_ONESHOT, 0, &ddata->irq_chip, &ddata->irq_data); if (ret) { dev_err(&spi->dev, "Failed to add PMIC irq chip %d\n", ret); return ret; } ret = devm_of_platform_populate(&spi->dev); if (ret) { dev_err(&spi->dev, "Failed to populate sub-devices %d\n", ret); return ret; } device_init_wakeup(&spi->dev, true); return 0; } #ifdef CONFIG_PM_SLEEP static int sprd_pmic_suspend(struct device *dev) { struct sprd_pmic *ddata = dev_get_drvdata(dev); if (device_may_wakeup(dev)) enable_irq_wake(ddata->irq); return 0; } static int sprd_pmic_resume(struct device *dev) { struct sprd_pmic *ddata = dev_get_drvdata(dev); if (device_may_wakeup(dev)) disable_irq_wake(ddata->irq); return 0; } #endif static SIMPLE_DEV_PM_OPS(sprd_pmic_pm_ops, sprd_pmic_suspend, sprd_pmic_resume); static const struct of_device_id sprd_pmic_match[] = { { .compatible = "sprd,sc2730", .data = &sc2730_data }, { .compatible = "sprd,sc2731", .data = &sc2731_data }, {}, }; MODULE_DEVICE_TABLE(of, sprd_pmic_match); static const struct spi_device_id sprd_pmic_spi_ids[] = { { .name = "sc2730", .driver_data = (unsigned long)&sc2730_data }, { .name = "sc2731", .driver_data = (unsigned long)&sc2731_data }, {}, }; MODULE_DEVICE_TABLE(spi, sprd_pmic_spi_ids); static struct spi_driver sprd_pmic_driver = { .driver = { .name = "sc27xx-pmic", .of_match_table = sprd_pmic_match, .pm = &sprd_pmic_pm_ops, }, .probe = sprd_pmic_probe, .id_table = sprd_pmic_spi_ids, }; static int __init sprd_pmic_init(void) { return spi_register_driver(&sprd_pmic_driver); } subsys_initcall(sprd_pmic_init); static void __exit sprd_pmic_exit(void) { spi_unregister_driver(&sprd_pmic_driver); } module_exit(sprd_pmic_exit); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Spreadtrum SC27xx PMICs driver"); MODULE_AUTHOR("Baolin Wang <baolin.wang@spreadtrum.com>");
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