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[178.122.232.167]) by smtp.googlemail.com with ESMTPSA id 4fb4d7f45d1cf-57cb72da156sm7731278a12.22.2024.06.18.07.00.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Jun 2024 07:00:26 -0700 (PDT) From: Dzmitry Sankouski Date: Tue, 18 Jun 2024 16:59:51 +0300 Subject: [PATCH v3 17/23] mfd: add s2dos series core driver Precedence: bulk X-Mailing-List: linux-pwm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240618-starqltechn_integration_upstream-v3-17-e3f6662017ac@gmail.com> References: <20240618-starqltechn_integration_upstream-v3-0-e3f6662017ac@gmail.com> In-Reply-To: <20240618-starqltechn_integration_upstream-v3-0-e3f6662017ac@gmail.com> To: Sebastian Reichel , Bjorn Andersson , Michael Turquette , Stephen Boyd , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Dmitry Torokhov , Pavel Machek , Liam Girdwood , Mark Brown , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Krzysztof Kozlowski , Konrad Dybcio , Chanwoo Choi , phone-devel@vger.kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pwm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Dzmitry Sankouski X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1718719185; l=10509; i=dsankouski@gmail.com; s=20240618; h=from:subject:message-id; bh=IHZAr5+Cdn0wmqhOZ2PeM9l2Gdz/tWq1OFfADxf5XIQ=; b=l66fMD8sHB8UJYTpLpJ1ay3lJvzfpqGlDq6nPosqrMEDYoFHMPD/dy7mDaSAk2An0pOO6QxUi qEyrqTzd98iCKNsZDfsTPkuE8JTVRSRulb9nsxxFrfA4H6vj652yV10 X-Developer-Key: i=dsankouski@gmail.com; a=ed25519; pk=6pMMVVDDReSiRgPCbMOUauN5nS3ty4Sf5b7a2gi4x0M= S2DOS05 is a panel/touchscreen PMIC, often found in Samsung phones. We define 2 sub-devices for which drivers will be added in subsequent patches. Signed-off-by: Dzmitry Sankouski --- MAINTAINERS | 1 + drivers/mfd/Kconfig | 13 +++ drivers/mfd/Makefile | 2 +- drivers/mfd/s2dos-core.c | 141 +++++++++++++++++++++++++++++++++ include/linux/mfd/samsung/s2dos-core.h | 21 +++++ include/linux/mfd/samsung/s2dos05.h | 115 +++++++++++++++++++++++++++ 6 files changed, 292 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index f3c245d432d9..b53462684a30 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19908,6 +19908,7 @@ F: Documentation/devicetree/bindings/regulator/samsung,s2dos*.yaml F: Documentation/devicetree/bindings/regulator/samsung,s2m*.yaml F: Documentation/devicetree/bindings/regulator/samsung,s5m*.yaml F: drivers/clk/clk-s2mps11.c +F: drivers/mfd/s2dos*.c F: drivers/mfd/sec*.c F: drivers/regulator/s2m*.c F: drivers/regulator/s5m*.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index c4eb8ff2dcad..517d8778d7a8 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1278,6 +1278,19 @@ config MFD_RN5T618 additional drivers must be enabled in order to use the functionality of the device. +config MFD_S2DOS_CORE + tristate "Samsung Electronics PMIC Series Support" + depends on I2C=y + depends on OF + select MFD_CORE + select REGMAP_I2C + help + Support for the Samsung Electronics PMIC devices + usually used to power displays. + This driver provides common support for accessing the device, + additional drivers must be enabled in order to use the functionality + of the device. + config MFD_SEC_CORE tristate "Samsung Electronics PMIC Series Support" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index bf65cc36d59c..37c51aab0205 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -228,7 +228,7 @@ obj-$(CONFIG_MFD_RK8XX_I2C) += rk8xx-i2c.o obj-$(CONFIG_MFD_RK8XX_SPI) += rk8xx-spi.o obj-$(CONFIG_MFD_RN5T618) += rn5t618.o obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o -obj-$(CONFIG_MFD_S2DOS05) += s2dos05.o +obj-$(CONFIG_MFD_S2DOS_CORE) += s2dos-core.o obj-$(CONFIG_MFD_SYSCON) += syscon.o obj-$(CONFIG_MFD_LM3533) += lm3533-core.o lm3533-ctrlbank.o obj-$(CONFIG_MFD_VEXPRESS_SYSREG) += vexpress-sysreg.o diff --git a/drivers/mfd/s2dos-core.c b/drivers/mfd/s2dos-core.c new file mode 100644 index 000000000000..a04363b15a2a --- /dev/null +++ b/drivers/mfd/s2dos-core.c @@ -0,0 +1,141 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * s2dos05.c - mfd core driver for the s2dos05 chip + * + * 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. + * + * Copyright (C) 2024 Dzmitry Sankouski + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct dentry *debugfs_file; + +static int s2dos05_debugfs_show(struct seq_file *s, void *data) +{ + struct s2dos_core *s2dos05 = s->private; + struct regmap *regmap = s2dos05->regmap; + unsigned int i, reg, reg_data, pmic_id; + int regs[] = { + S2DOS05_REG_DEV_ID, + S2DOS05_REG_TOPSYS_STAT, + S2DOS05_REG_STAT, + S2DOS05_REG_EN, + S2DOS05_REG_LDO1_CFG, + S2DOS05_REG_LDO2_CFG, + S2DOS05_REG_LDO3_CFG, + S2DOS05_REG_LDO4_CFG, + S2DOS05_REG_BUCK_CFG, + S2DOS05_REG_BUCK_VOUT, + S2DOS05_REG_IRQ_MASK, + S2DOS05_REG_SSD_TSD, + S2DOS05_REG_OCL, + S2DOS05_REG_IRQ + }; + regmap_read(regmap, S2DOS05_REG_DEV_ID, &pmic_id); + seq_printf(s, "S2DOS05, id: %d\n", pmic_id); + seq_puts(s, "===================\n"); + for (i = 0; i < ARRAY_SIZE(regs); i++) { + reg = regs[i]; + regmap_read(regmap, reg, ®_data); + seq_printf(s, "0x%02x:\t0x%02x\n", reg, reg_data); + } + + seq_puts(s, "\n"); + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(s2dos05_debugfs); + +static const struct regmap_config s2dos05_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = S2DOS05_REG_IRQ, +}; + +static struct mfd_cell s2dos05_devs[] = { + { .name = "s2dos05-fg" }, + { + .name = "s2dos05-regulator", + .of_compatible = "samsung,s2dos05-regulator", + }, +}; + + +static int s2dos05_i2c_probe(struct i2c_client *i2c) +{ + struct s2dos_core *s2dos05; + struct regmap *regmap; + struct device *dev = &i2c->dev; + + unsigned int reg_data; + int ret = 0; + + s2dos05 = kzalloc(sizeof(struct s2dos_core), GFP_KERNEL); + if (!s2dos05) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(i2c, &s2dos05_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "Unable to initialise I2C Regmap\n"); + return PTR_ERR(regmap); + } + s2dos05->regmap = regmap; + + if (regmap_read(regmap, S2DOS05_REG_DEV_ID, ®_data) < 0) { + dev_err(dev, + "device not found on this channel (this is not an error)\n"); + ret = -ENODEV; + } else { + dev_info(dev, "%s device found with id: .0x%x\n", + __func__, reg_data); + } + + i2c_set_clientdata(i2c, s2dos05); + + debugfs_file = debugfs_create_file("s2dos05-regs", + 0664, NULL, (void *)s2dos05, + &s2dos05_debugfs_fops); + if (!debugfs_file) + dev_err(dev, "Failed to create debugfs file\n"); + + return mfd_add_devices(dev, -1, s2dos05_devs, + ARRAY_SIZE(s2dos05_devs), NULL, 0, NULL); +} + +static const struct of_device_id s2dos05_i2c_dt_ids[] = { + { .compatible = "samsung,s2dos05-pmic" }, + { }, +}; +MODULE_DEVICE_TABLE(of, s2dos05_i2c_dt_ids); + +static struct i2c_driver s2dos05_i2c_driver = { + .driver = { + .name = "s2dos-core", + .owner = THIS_MODULE, + .of_match_table = s2dos05_i2c_dt_ids, + }, + .probe = s2dos05_i2c_probe, +}; + +module_i2c_driver(s2dos05_i2c_driver); + +MODULE_DESCRIPTION("s2dos core driver"); +MODULE_AUTHOR("Dzmitry Sankouski "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/samsung/s2dos-core.h b/include/linux/mfd/samsung/s2dos-core.h new file mode 100644 index 000000000000..7e84b387063c --- /dev/null +++ b/include/linux/mfd/samsung/s2dos-core.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * s2dos-core.h + * + * Copyright (c) 2016 Samsung Electronics Co., Ltd + * http://www.samsung.com + * Copyright (C) 2024 Dzmitry Sankouski + * + */ + +#ifndef __LINUX_MFD_S2DOS_CORE_H +#define __LINUX_MFD_S2DOS_CORE_H +#include +#include + +struct s2dos_core { + struct device *dev; + struct regmap *regmap; +}; + +#endif /* __LINUX_MFD_S2DOS_CORE_H */ diff --git a/include/linux/mfd/samsung/s2dos05.h b/include/linux/mfd/samsung/s2dos05.h new file mode 100644 index 000000000000..0317dbe56f10 --- /dev/null +++ b/include/linux/mfd/samsung/s2dos05.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * s2dos05.h + * + * Copyright (c) 2016 Samsung Electronics Co., Ltd + * http://www.samsung.com + * + */ + +#ifndef __LINUX_MFD_S2DOS05_H +#define __LINUX_MFD_S2DOS05_H + +/* S2DOS05 registers */ +/* Slave Addr : 0xC0 */ +enum s2dos05_reg { + S2DOS05_REG_DEV_ID, + S2DOS05_REG_TOPSYS_STAT, + S2DOS05_REG_STAT, + S2DOS05_REG_EN, + S2DOS05_REG_LDO1_CFG, + S2DOS05_REG_LDO2_CFG, + S2DOS05_REG_LDO3_CFG, + S2DOS05_REG_LDO4_CFG, + S2DOS05_REG_BUCK_CFG, + S2DOS05_REG_BUCK_VOUT, + S2DOS05_REG_IRQ_MASK = 0x0D, + S2DOS05_REG_SSD_TSD = 0x0E, + S2DOS05_REG_OCL = 0x10, + S2DOS05_REG_IRQ = 0x11 +}; + +/* S2DOS05 regulator ids */ +enum s2dos05_regulators { + S2DOS05_LDO1, + S2DOS05_LDO2, + S2DOS05_LDO3, + S2DOS05_LDO4, + S2DOS05_BUCK1, + S2DOS05_REG_MAX, +}; + +#define S2DOS05_IRQ_PWRMT_MASK BIT(5) +#define S2DOS05_IRQ_TSD_MASK BIT(4) +#define S2DOS05_IRQ_SSD_MASK BIT(3) +#define S2DOS05_IRQ_SCP_MASK BIT(2) +#define S2DOS05_IRQ_UVLO_MASK BIT(1) +#define S2DOS05_IRQ_OCD_MASK BIT(0) + +#define S2DOS05_BUCK_MIN1 506250 +#define S2DOS05_LDO_MIN1 1500000 +#define S2DOS05_LDO_MIN2 2700000 +#define S2DOS05_BUCK_STEP1 6250 +#define S2DOS05_LDO_STEP1 25000 +#define S2DOS05_LDO_VSEL_MASK 0x7F +#define S2DOS05_LDO_FD_MASK BIT(7) +#define S2DOS05_BUCK_VSEL_MASK 0xFF +#define S2DOS05_BUCK_FD_MASK BIT(3) + +#define S2DOS05_ENABLE_MASK_L1 BIT(0) +#define S2DOS05_ENABLE_MASK_L2 BIT(1) +#define S2DOS05_ENABLE_MASK_L3 BIT(2) +#define S2DOS05_ENABLE_MASK_L4 BIT(3) +#define S2DOS05_ENABLE_MASK_B1 BIT(4) + +#define S2DOS05_RAMP_DELAY 12000 + +#define S2DOS05_ENABLE_TIME_LDO 50 +#define S2DOS05_ENABLE_TIME_BUCK 350 + +#define S2DOS05_ENABLE_SHIFT 0x06 +#define S2DOS05_LDO_N_VOLTAGES (S2DOS05_LDO_VSEL_MASK + 1) +#define S2DOS05_BUCK_N_VOLTAGES (S2DOS05_BUCK_VSEL_MASK + 1) + +#define S2DOS05_PMIC_EN_SHIFT 6 +#define S2DOS05_REGULATOR_MAX (S2DOS05_REG_MAX) + +/* ----------power meter ----------*/ +#define S2DOS05_REG_PWRMT_CTRL1 0x0A +#define S2DOS05_REG_PWRMT_CTRL2 0x0B +#define S2DOS05_REG_PWRMT_DATA 0x0C +#define S2DOS05_REG_IRQ_MASK 0x0D + +#define CHANNEL_ELVDD 0 +#define CHANNEL_ELVSS 1 +#define CHANNEL_AVDD 2 +#define CHANNEL_BUCK 3 +#define CHANNEL_L1 4 +#define CHANNEL_L2 5 +#define CHANNEL_L3 6 +#define CHANNEL_L4 7 + +#define POWER_ELVDD 24500 +#define POWER_ELVSS 24500 +#define POWER_AVDD 3060 +#define POWER_BUCK 1525 +#define POWER_L1 5000 +#define POWER_L2 5000 +#define POWER_L3 5000 +#define POWER_L4 5000 + +/* S2DOS05_REG_OCL */ +#define ADC_VALID_MASK BIT(7) +/* S2DOS05_REG_PWRMT_CTRL1 */ +#define ADC_ASYNCRD_MASK BIT(7) +#define PWRMT_EN_CHK BIT(6) +#define SMPNUM_MASK 0x0F +/* S2DOS05_REG_PWRMT_CTRL2 */ +#define ADC_EN_MASK BIT(7) +#define ADC_PTR_MASK 0x0F +#define POWER_MODE BIT(4) +#define RAWCURRENT_MODE BIT(5) + +#define S2DOS05_MAX_ADC_CHANNEL 8 + +#endif /* __LINUX_MFD_S2DOS05_H */