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[209.132.180.67]) by mx.google.com with ESMTP id wl10si4591516pab.143.2014.03.06.02.08.12; Thu, 06 Mar 2014 02:08:12 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752721AbaCFKIE (ORCPT + 26 others); Thu, 6 Mar 2014 05:08:04 -0500 Received: from mail-pd0-f179.google.com ([209.85.192.179]:56002 "EHLO mail-pd0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752481AbaCFKHE (ORCPT ); Thu, 6 Mar 2014 05:07:04 -0500 Received: by mail-pd0-f179.google.com with SMTP id w10so2363719pde.10 for ; Thu, 06 Mar 2014 02:07:04 -0800 (PST) X-Received: by 10.66.142.107 with SMTP id rv11mr13314365pab.17.1394100424037; Thu, 06 Mar 2014 02:07:04 -0800 (PST) Received: from linaro.sisodomain.com ([115.113.119.130]) by mx.google.com with ESMTPSA id lh13sm34041003pab.4.2014.03.06.02.07.01 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 06 Mar 2014 02:07:03 -0800 (PST) From: Sachin Kamat To: linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, sachin.kamat@linaro.org Subject: [PATCH v3 Resend 2/3] regulator: Add support for S2MPA01 regulator Date: Thu, 6 Mar 2014 15:30:56 +0530 Message-Id: <1394100057-32677-2-git-send-email-sachin.kamat@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1394100057-32677-1-git-send-email-sachin.kamat@linaro.org> References: <1394100057-32677-1-git-send-email-sachin.kamat@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: sachin.kamat@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.220.173 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Add support for S2MPA01 voltage and current regulator. Signed-off-by: Sachin Kamat Acked-by: Mark Brown --- drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/s2mpa01.c | 483 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 491 insertions(+) create mode 100644 drivers/regulator/s2mpa01.c diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 4ddfb6c065c7..5b08ea927870 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -425,6 +425,13 @@ config REGULATOR_RC5T583 through regulator interface. The device supports multiple DCDC/LDO outputs which can be controlled by i2c communication. +config REGULATOR_S2MPA01 + tristate "Samsung S2MPA01 voltage regulator" + depends on MFD_SEC_CORE + help + This driver controls Samsung S2MPA01 voltage output regulator + via I2C bus. S2MPA01 has 10 Bucks and 26 LDO outputs. + config REGULATOR_S2MPS11 tristate "Samsung S2MPS11 voltage regulator" depends on MFD_SEC_CORE diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index c624dbcdcc76..2d14f7580304 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -58,6 +58,7 @@ obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o obj-$(CONFIG_REGULATOR_RC5T583) += rc5t583-regulator.o +obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o diff --git a/drivers/regulator/s2mpa01.c b/drivers/regulator/s2mpa01.c new file mode 100644 index 000000000000..6ac6e8205a05 --- /dev/null +++ b/drivers/regulator/s2mpa01.c @@ -0,0 +1,483 @@ +/* + * Copyright (c) 2013 Samsung Electronics Co., Ltd + * http://www.samsung.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define S2MPA01_REGULATOR_CNT ARRAY_SIZE(regulators) + +struct s2mpa01_info { + struct regulator_dev *rdev[S2MPA01_REGULATOR_MAX]; + + int ramp_delay24; + int ramp_delay3; + int ramp_delay5; + int ramp_delay16; + int ramp_delay7; + int ramp_delay8910; +}; + +static int get_ramp_delay(int ramp_delay) +{ + unsigned char cnt = 0; + + ramp_delay /= 6250; + + while (true) { + ramp_delay = ramp_delay >> 1; + if (ramp_delay == 0) + break; + cnt++; + } + + if (cnt > 3) + cnt = 3; + + return cnt; +} + +static int s2mpa01_regulator_set_voltage_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev); + unsigned int ramp_delay = 0; + int old_volt, new_volt; + + switch (rdev->desc->id) { + case S2MPA01_BUCK2: + case S2MPA01_BUCK4: + ramp_delay = s2mpa01->ramp_delay24; + break; + case S2MPA01_BUCK3: + ramp_delay = s2mpa01->ramp_delay3; + break; + case S2MPA01_BUCK5: + ramp_delay = s2mpa01->ramp_delay5; + break; + case S2MPA01_BUCK1: + case S2MPA01_BUCK6: + ramp_delay = s2mpa01->ramp_delay16; + break; + case S2MPA01_BUCK7: + ramp_delay = s2mpa01->ramp_delay7; + break; + case S2MPA01_BUCK8: + case S2MPA01_BUCK9: + case S2MPA01_BUCK10: + ramp_delay = s2mpa01->ramp_delay8910; + break; + } + + if (ramp_delay == 0) + ramp_delay = rdev->desc->ramp_delay; + + old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector); + new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector); + + return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay); +} + +static int s2mpa01_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) +{ + struct s2mpa01_info *s2mpa01 = rdev_get_drvdata(rdev); + unsigned int ramp_val, ramp_shift, ramp_reg = S2MPA01_REG_RAMP2; + unsigned int ramp_enable = 1, enable_shift = 0; + int ret; + + switch (rdev->desc->id) { + case S2MPA01_BUCK1: + enable_shift = S2MPA01_BUCK1_RAMP_EN_SHIFT; + if (!ramp_delay) { + ramp_enable = 0; + break; + } + + if (ramp_delay > s2mpa01->ramp_delay16) + s2mpa01->ramp_delay16 = ramp_delay; + else + ramp_delay = s2mpa01->ramp_delay16; + + ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT; + ramp_reg = S2MPA01_REG_RAMP1; + break; + case S2MPA01_BUCK2: + enable_shift = S2MPA01_BUCK2_RAMP_EN_SHIFT; + if (!ramp_delay) { + ramp_enable = 0; + break; + } + + if (ramp_delay > s2mpa01->ramp_delay24) + s2mpa01->ramp_delay24 = ramp_delay; + else + ramp_delay = s2mpa01->ramp_delay24; + + ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT; + ramp_reg = S2MPA01_REG_RAMP1; + break; + case S2MPA01_BUCK3: + enable_shift = S2MPA01_BUCK3_RAMP_EN_SHIFT; + if (!ramp_delay) { + ramp_enable = 0; + break; + } + + s2mpa01->ramp_delay3 = ramp_delay; + ramp_shift = S2MPA01_BUCK3_RAMP_SHIFT; + ramp_reg = S2MPA01_REG_RAMP1; + break; + case S2MPA01_BUCK4: + enable_shift = S2MPA01_BUCK4_RAMP_EN_SHIFT; + if (!ramp_delay) { + ramp_enable = 0; + break; + } + + if (ramp_delay > s2mpa01->ramp_delay24) + s2mpa01->ramp_delay24 = ramp_delay; + else + ramp_delay = s2mpa01->ramp_delay24; + + ramp_shift = S2MPA01_BUCK24_RAMP_SHIFT; + ramp_reg = S2MPA01_REG_RAMP1; + break; + case S2MPA01_BUCK5: + s2mpa01->ramp_delay5 = ramp_delay; + ramp_shift = S2MPA01_BUCK5_RAMP_SHIFT; + break; + case S2MPA01_BUCK6: + if (ramp_delay > s2mpa01->ramp_delay16) + s2mpa01->ramp_delay16 = ramp_delay; + else + ramp_delay = s2mpa01->ramp_delay16; + + ramp_shift = S2MPA01_BUCK16_RAMP_SHIFT; + break; + case S2MPA01_BUCK7: + s2mpa01->ramp_delay7 = ramp_delay; + ramp_shift = S2MPA01_BUCK7_RAMP_SHIFT; + break; + case S2MPA01_BUCK8: + case S2MPA01_BUCK9: + case S2MPA01_BUCK10: + if (ramp_delay > s2mpa01->ramp_delay8910) + s2mpa01->ramp_delay8910 = ramp_delay; + else + ramp_delay = s2mpa01->ramp_delay8910; + + ramp_shift = S2MPA01_BUCK8910_RAMP_SHIFT; + break; + default: + return 0; + } + + if (!ramp_enable) + goto ramp_disable; + + if (enable_shift) { + ret = regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1, + 1 << enable_shift, 1 << enable_shift); + if (ret) { + dev_err(&rdev->dev, "failed to enable ramp rate\n"); + return ret; + } + } + + ramp_val = get_ramp_delay(ramp_delay); + + return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift, + ramp_val << ramp_shift); + +ramp_disable: + return regmap_update_bits(rdev->regmap, S2MPA01_REG_RAMP1, + 1 << enable_shift, 0); +} + +static struct regulator_ops s2mpa01_ldo_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, +}; + +static struct regulator_ops s2mpa01_buck_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .set_voltage_time_sel = s2mpa01_regulator_set_voltage_time_sel, + .set_ramp_delay = s2mpa01_set_ramp_delay, +}; + +#define regulator_desc_ldo1(num) { \ + .name = "LDO"#num, \ + .id = S2MPA01_LDO##num, \ + .ops = &s2mpa01_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_LDO_MIN, \ + .uV_step = S2MPA01_LDO_STEP1, \ + .n_voltages = S2MPA01_LDO_N_VOLTAGES, \ + .vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \ + .vsel_mask = S2MPA01_LDO_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_L1CTRL + num - 1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} +#define regulator_desc_ldo2(num) { \ + .name = "LDO"#num, \ + .id = S2MPA01_LDO##num, \ + .ops = &s2mpa01_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_LDO_MIN, \ + .uV_step = S2MPA01_LDO_STEP2, \ + .n_voltages = S2MPA01_LDO_N_VOLTAGES, \ + .vsel_reg = S2MPA01_REG_L1CTRL + num - 1, \ + .vsel_mask = S2MPA01_LDO_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_L1CTRL + num - 1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck1_4(num) { \ + .name = "BUCK"#num, \ + .id = S2MPA01_BUCK##num, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN1, \ + .uV_step = S2MPA01_BUCK_STEP1, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B1CTRL2 + (num - 1) * 2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B1CTRL1 + (num - 1) * 2, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck5 { \ + .name = "BUCK5", \ + .id = S2MPA01_BUCK5, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN2, \ + .uV_step = S2MPA01_BUCK_STEP1, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B5CTRL2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B5CTRL1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck6_7(num) { \ + .name = "BUCK"#num, \ + .id = S2MPA01_BUCK##num, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN1, \ + .uV_step = S2MPA01_BUCK_STEP1, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B6CTRL2 + (num - 6) * 2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B6CTRL1 + (num - 6) * 2, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck8 { \ + .name = "BUCK8", \ + .id = S2MPA01_BUCK8, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN2, \ + .uV_step = S2MPA01_BUCK_STEP2, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B8CTRL2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B8CTRL1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck9 { \ + .name = "BUCK9", \ + .id = S2MPA01_BUCK9, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN4, \ + .uV_step = S2MPA01_BUCK_STEP2, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B9CTRL2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B9CTRL1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +#define regulator_desc_buck10 { \ + .name = "BUCK10", \ + .id = S2MPA01_BUCK10, \ + .ops = &s2mpa01_buck_ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = S2MPA01_BUCK_MIN3, \ + .uV_step = S2MPA01_BUCK_STEP2, \ + .n_voltages = S2MPA01_BUCK_N_VOLTAGES, \ + .ramp_delay = S2MPA01_RAMP_DELAY, \ + .vsel_reg = S2MPA01_REG_B10CTRL2, \ + .vsel_mask = S2MPA01_BUCK_VSEL_MASK, \ + .enable_reg = S2MPA01_REG_B10CTRL1, \ + .enable_mask = S2MPA01_ENABLE_MASK \ +} + +static struct regulator_desc regulators[] = { + regulator_desc_ldo2(1), + regulator_desc_ldo1(2), + regulator_desc_ldo1(3), + regulator_desc_ldo1(4), + regulator_desc_ldo1(5), + regulator_desc_ldo2(6), + regulator_desc_ldo1(7), + regulator_desc_ldo1(8), + regulator_desc_ldo1(9), + regulator_desc_ldo1(10), + regulator_desc_ldo2(11), + regulator_desc_ldo1(12), + regulator_desc_ldo1(13), + regulator_desc_ldo1(14), + regulator_desc_ldo1(15), + regulator_desc_ldo1(16), + regulator_desc_ldo1(17), + regulator_desc_ldo1(18), + regulator_desc_ldo1(19), + regulator_desc_ldo1(20), + regulator_desc_ldo1(21), + regulator_desc_ldo2(22), + regulator_desc_ldo2(23), + regulator_desc_ldo1(24), + regulator_desc_ldo1(25), + regulator_desc_ldo1(26), + regulator_desc_buck1_4(1), + regulator_desc_buck1_4(2), + regulator_desc_buck1_4(3), + regulator_desc_buck1_4(4), + regulator_desc_buck5, + regulator_desc_buck6_7(6), + regulator_desc_buck6_7(7), + regulator_desc_buck8, + regulator_desc_buck9, + regulator_desc_buck10, +}; + +static int s2mpa01_pmic_probe(struct platform_device *pdev) +{ + struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct sec_platform_data *pdata = dev_get_platdata(iodev->dev); + struct of_regulator_match rdata[S2MPA01_REGULATOR_MAX]; + struct device_node *reg_np = NULL; + struct regulator_config config = { }; + struct s2mpa01_info *s2mpa01; + int i, ret; + + s2mpa01 = devm_kzalloc(&pdev->dev, sizeof(*s2mpa01), GFP_KERNEL); + if (!s2mpa01) + return -ENOMEM; + + for (i = 0; i < S2MPA01_REGULATOR_CNT; i++) + rdata[i].name = regulators[i].name; + + if (iodev->dev->of_node) { + reg_np = of_get_child_by_name(iodev->dev->of_node, + "regulators"); + if (!reg_np) { + dev_err(&pdev->dev, + "could not find regulators sub-node\n"); + return -EINVAL; + } + + of_regulator_match(&pdev->dev, reg_np, rdata, + S2MPA01_REGULATOR_MAX); + of_node_put(reg_np); + } + + platform_set_drvdata(pdev, s2mpa01); + + config.dev = &pdev->dev; + config.regmap = iodev->regmap_pmic; + config.driver_data = s2mpa01; + + for (i = 0; i < S2MPA01_REGULATOR_MAX; i++) { + if (pdata) + config.init_data = pdata->regulators[i].initdata; + else + config.init_data = rdata[i].init_data; + + if (reg_np) + config.of_node = rdata[i].of_node; + + s2mpa01->rdev[i] = devm_regulator_register(&pdev->dev, + ®ulators[i], &config); + if (IS_ERR(s2mpa01->rdev[i])) { + ret = PTR_ERR(s2mpa01->rdev[i]); + dev_err(&pdev->dev, "regulator init failed for %d\n", + i); + return ret; + } + } + + return 0; +} + +static const struct platform_device_id s2mpa01_pmic_id[] = { + { "s2mpa01-pmic", 0}, + { }, +}; +MODULE_DEVICE_TABLE(platform, s2mpa01_pmic_id); + +static struct platform_driver s2mpa01_pmic_driver = { + .driver = { + .name = "s2mpa01-pmic", + .owner = THIS_MODULE, + }, + .probe = s2mpa01_pmic_probe, + .id_table = s2mpa01_pmic_id, +}; + +module_platform_driver(s2mpa01_pmic_driver); + +/* Module information */ +MODULE_AUTHOR("Sangbeom Kim "); +MODULE_AUTHOR("Sachin Kamat "); +MODULE_DESCRIPTION("SAMSUNG S2MPA01 Regulator Driver"); +MODULE_LICENSE("GPL");