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[54.88.144.211]) by gmr-mx.google.com with ESMTP id k7si83322qcm.2.2014.09.01.02.40.05 for ; Mon, 01 Sep 2014 02:40:05 -0700 (PDT) Received-SPF: pass (google.com: domain of zyw@rock-chips.com designates 54.88.144.211 as permitted sender) client-ip=54.88.144.211; Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by vasmtpcom.263.net (Postfix) with ESMTP id 38B877F979; Mon, 1 Sep 2014 17:39:55 +0800 (CST) X-RL-SENDER: zyw@rock-chips.com X-FST-TO: robh+dt@kernel.org X-SENDER-IP: 127.0.0.1 X-LOGIN-NAME: zyw@rock-chips.com X-UNIQUE-TAG: <3382f6131c8e77208a0a27d630e34ef5> X-ATTACHMENT-NUM: 0 X-SENDER: zyw@rock-chips.com X-DNS-TYPE: 1 Received: from localhost.localdomain (localhost [127.0.0.1]) by vasmtpcom.263.net (Postfix) whith ESMTP id 25657WLO2T7; Mon, 01 Sep 2014 17:39:55 +0800 (CST) From: Chris Zhong To: robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, sameo@linux.intel.com, lee.jones@linaro.org, lgirdwood@gmail.com, a.zummo@towertech.it, mturquette@linaro.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, rtc-linux@googlegroups.com, grant.likely@linaro.org, hl@rock-chips.com, huangtao@rock-chips.com, cf@rock-chips.com, zhangqing@rock-chips.com, xxx@rock-chips.com, dianders@chromium.org, heiko@sntech.de, olof@lixom.net, sonnyrao@chromium.org, dtor@chromium.org, javier.martinez@collabora.co.uk, kever.yang@rock-chips.com, Chris Zhong Subject: [rtc-linux] [PATCH v7 2/5] MFD: RK808: Add new mfd driver for RK808 Date: Mon, 1 Sep 2014 17:39:44 +0800 Message-Id: <1409564384-18380-1-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1409562468-16586-1-git-send-email-zyw@rock-chips.com> References: <1409562468-16586-1-git-send-email-zyw@rock-chips.com> X-Original-Sender: zyw@rock-chips.com X-Original-Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of zyw@rock-chips.com designates 54.88.144.211 as permitted sender) smtp.mail=zyw@rock-chips.com Reply-To: rtc-linux@googlegroups.com Precedence: list Mailing-list: list rtc-linux@googlegroups.com; contact rtc-linux+owners@googlegroups.com List-ID: X-Google-Group-Id: 712029733259 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , The RK808 chip is a power management IC for multimedia and handheld devices. It contains the following components: - Regulators - RTC - Clkout The RK808 core driver is registered as a platform driver and provides communication through I2C with the host device for the different components. Signed-off-by: Chris Zhong Signed-off-by: Zhang Qing Acked-by: Lee Jones --- Changes in v7: Adviced by Lee Jones - coding style - remove rk808_pre_init function Adviced by Doug - add "&& OF" to the dependencies - add .init_ack_masked = true in rk808_irq_chip Changes in v6: Adviced by Lee Jones in v2 - rk808_i2c_client instead of g_rk808 - remove pdata form struct rk808 Changes in v5: None Changes in v4: Adviced by Lee Jones in v2 - modify the description in Kconfig - remove some unnecessary header files - remove dev from struct rk808 - use enum for define RK808_ID... Changes in v3: - fix compile err Changes in v2: Adviced by Mark Browm: - use defines for register setting value - remove rtc alarm disable in shutdown - remove while(1) in shutdown - remove read 0x2f in probe drivers/mfd/Kconfig | 13 +++ drivers/mfd/Makefile | 1 + drivers/mfd/rk808.c | 243 +++++++++++++++++++++++++++++++++++++++++++++ include/linux/mfd/rk808.h | 196 ++++++++++++++++++++++++++++++++++++ 4 files changed, 453 insertions(+) create mode 100644 drivers/mfd/rk808.c create mode 100644 include/linux/mfd/rk808.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index de5abf2..4097793 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -582,6 +582,19 @@ config MFD_RC5T583 Additional drivers must be enabled in order to use the different functionality of the device. +config MFD_RK808 + tristate "Rockchip RK808 Power Management chip" + depends on I2C && OF + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + help + If you say yes here you get support for the RK808 + Power Management chips. + This driver provides common support for accessing the device + through I2C interface. The device supports multiple sub-devices + including interrupts, RTC, LDO & DCDC regulators, and onkey. + config MFD_SEC_CORE bool "SAMSUNG Electronics PMIC Series Support" depends on I2C=y diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f001487..dbc28e7 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -160,6 +160,7 @@ obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o obj-$(CONFIG_MFD_PALMAS) += palmas.o obj-$(CONFIG_MFD_VIPERBOARD) += viperboard.o obj-$(CONFIG_MFD_RC5T583) += rc5t583.o rc5t583-irq.o +obj-$(CONFIG_MFD_RK808) += rk808.o obj-$(CONFIG_MFD_SEC_CORE) += sec-core.o sec-irq.o obj-$(CONFIG_MFD_SYSCON) += syscon.o obj-$(CONFIG_MFD_LM3533) += lm3533-core.o lm3533-ctrlbank.o diff --git a/drivers/mfd/rk808.c b/drivers/mfd/rk808.c new file mode 100644 index 0000000..869b144 --- /dev/null +++ b/drivers/mfd/rk808.c @@ -0,0 +1,243 @@ +/* + * MFD core driver for Rockchip RK808 + * + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include +#include +#include +#include +#include +#include + +struct rk808_reg_data { + int addr; + int mask; + int value; +}; + +static const struct regmap_config rk808_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = RK808_IO_POL_REG, +}; + +static struct resource rtc_resources[] = { + { + .start = RK808_IRQ_RTC_ALARM, + .end = RK808_IRQ_RTC_ALARM, + .flags = IORESOURCE_IRQ, + } +}; + +static const struct mfd_cell rk808s[] = { + { .name = "rk808-clkout", }, + { .name = "rk808-regulator", }, + { + .name = "rk808-rtc", + .num_resources = ARRAY_SIZE(rtc_resources), + .resources = &rtc_resources[0], + }, +}; + +static const struct rk808_reg_data pre_init_reg[] = { + { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA }, + { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA }, + { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA }, + { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA }, + { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA }, + { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT | + VB_LO_SEL_3500MV }, +}; + +static const struct regmap_irq rk808_irqs[] = { + /* INT_STS */ + [RK808_IRQ_VOUT_LO] = { + .mask = RK808_IRQ_VOUT_LO_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_VB_LO] = { + .mask = RK808_IRQ_VB_LO_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_PWRON] = { + .mask = RK808_IRQ_PWRON_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_PWRON_LP] = { + .mask = RK808_IRQ_PWRON_LP_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_HOTDIE] = { + .mask = RK808_IRQ_HOTDIE_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_RTC_ALARM] = { + .mask = RK808_IRQ_RTC_ALARM_MSK, + .reg_offset = 0, + }, + [RK808_IRQ_RTC_PERIOD] = { + .mask = RK808_IRQ_RTC_PERIOD_MSK, + .reg_offset = 0, + }, + + /* INT_STS2 */ + [RK808_IRQ_PLUG_IN_INT] = { + .mask = RK808_IRQ_PLUG_IN_INT_MSK, + .reg_offset = 1, + }, + [RK808_IRQ_PLUG_OUT_INT] = { + .mask = RK808_IRQ_PLUG_OUT_INT_MSK, + .reg_offset = 1, + }, +}; + +static struct regmap_irq_chip rk808_irq_chip = { + .name = "rk808", + .irqs = rk808_irqs, + .num_irqs = ARRAY_SIZE(rk808_irqs), + .num_regs = 2, + .irq_reg_stride = 2, + .status_base = RK808_INT_STS_REG1, + .mask_base = RK808_INT_STS_MSK_REG1, + .ack_base = RK808_INT_STS_REG1, + .init_ack_masked = true, +}; + +static struct i2c_client *rk808_i2c_client; +static void rk808_device_shutdown(void) +{ + int ret; + struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client); + + if (!rk808) { + dev_warn(&rk808_i2c_client->dev, + "have no rk808, so do nothing here\n"); + return; + } + + ret = regmap_update_bits(rk808->regmap, + RK808_DEVCTRL_REG, + DEV_OFF_RST, DEV_OFF_RST); + if (ret) + dev_err(&rk808_i2c_client->dev, "power off error!\n"); +} + +static int rk808_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int i; + int ret; + int pm_off = 0; + struct rk808 *rk808; + struct device_node *np = client->dev.of_node; + + if (!client->irq) { + dev_err(&client->dev, "No interrupt support, no core IRQ\n"); + return -EINVAL; + } + + rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL); + if (!rk808) + return -ENOMEM; + + rk808->regmap = devm_regmap_init_i2c(client, &rk808_regmap_config); + if (IS_ERR(rk808->regmap)) { + dev_err(&client->dev, "regmap initialization failed\n"); + return PTR_ERR(rk808->regmap); + } + + for (i = 0; i < ARRAY_SIZE(pre_init_reg); i++) { + ret = regmap_update_bits(rk808->regmap, pre_init_reg[i].addr, + pre_init_reg[i].mask, + pre_init_reg[i].value); + if (ret) { + dev_err(&client->dev, + "0x%x write err\n", pre_init_reg[i].addr); + return ret; + } + } + + ret = regmap_add_irq_chip(rk808->regmap, client->irq, + IRQF_ONESHOT, -1, + &rk808_irq_chip, &rk808->irq_data); + if (ret) { + dev_err(&client->dev, "Failed to add irq_chip %d\n", ret); + return ret; + } + + rk808->i2c = client; + i2c_set_clientdata(client, rk808); + ret = mfd_add_devices(&client->dev, -1, + rk808s, ARRAY_SIZE(rk808s), + NULL, 0, regmap_irq_get_domain(rk808->irq_data)); + if (ret) { + dev_err(&client->dev, "failed to add MFD devices %d\n", ret); + goto err_irq; + } + + if (np) { + pm_off = of_property_read_bool(np, + "rockchip,system-power-controller"); + if (pm_off && !pm_power_off) { + rk808_i2c_client = client; + pm_power_off = rk808_device_shutdown; + } + } + + return 0; + +err_irq: + regmap_del_irq_chip(client->irq, rk808->irq_data); + return ret; +} + +static int rk808_remove(struct i2c_client *client) +{ + struct rk808 *rk808 = i2c_get_clientdata(client); + + regmap_del_irq_chip(client->irq, rk808->irq_data); + mfd_remove_devices(&client->dev); + pm_power_off = NULL; + + return 0; +} + +static struct of_device_id rk808_of_match[] = { + { .compatible = "rockchip,rk808" }, + { }, +}; +MODULE_DEVICE_TABLE(of, rk808_of_match); + +static const struct i2c_device_id rk808_ids[] = { + { "rk808" }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, rk808_ids); + +static struct i2c_driver rk808_i2c_driver = { + .driver = { + .name = "rk808", + .of_match_table = of_match_ptr(rk808_of_match), + }, + .probe = rk808_probe, + .remove = rk808_remove, + .id_table = rk808_ids, +}; + +module_i2c_driver(rk808_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Chris Zhong "); +MODULE_AUTHOR("Zhang Qing "); +MODULE_DESCRIPTION("RK808 PMIC driver"); diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h new file mode 100644 index 0000000..fb09312 --- /dev/null +++ b/include/linux/mfd/rk808.h @@ -0,0 +1,196 @@ +/* + * rk808.h for Rockchip RK808 + * + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd + * + * Author: Chris Zhong + * Author: Zhang Qing + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#ifndef __LINUX_REGULATOR_rk808_H +#define __LINUX_REGULATOR_rk808_H + +#include +#include + +/* + * rk808 Global Register Map. + */ + +#define RK808_DCDC1 0 /* (0+RK808_START) */ +#define RK808_LDO1 4 /* (4+RK808_START) */ +#define RK808_NUM_REGULATORS 14 + +enum rk808_reg { + RK808_ID_DCDC1, + RK808_ID_DCDC2, + RK808_ID_DCDC3, + RK808_ID_DCDC4, + RK808_ID_LDO1, + RK808_ID_LDO2, + RK808_ID_LDO3, + RK808_ID_LDO4, + RK808_ID_LDO5, + RK808_ID_LDO6, + RK808_ID_LDO7, + RK808_ID_LDO8, + RK808_ID_SWITCH1, + RK808_ID_SWITCH2, +}; + +#define RK808_SECONDS_REG 0x00 +#define RK808_MINUTES_REG 0x01 +#define RK808_HOURS_REG 0x02 +#define RK808_DAYS_REG 0x03 +#define RK808_MONTHS_REG 0x04 +#define RK808_YEARS_REG 0x05 +#define RK808_WEEKS_REG 0x06 +#define RK808_ALARM_SECONDS_REG 0x08 +#define RK808_ALARM_MINUTES_REG 0x09 +#define RK808_ALARM_HOURS_REG 0x0a +#define RK808_ALARM_DAYS_REG 0x0b +#define RK808_ALARM_MONTHS_REG 0x0c +#define RK808_ALARM_YEARS_REG 0x0d +#define RK808_RTC_CTRL_REG 0x10 +#define RK808_RTC_STATUS_REG 0x11 +#define RK808_RTC_INT_REG 0x12 +#define RK808_RTC_COMP_LSB_REG 0x13 +#define RK808_RTC_COMP_MSB_REG 0x14 +#define RK808_CLK32OUT_REG 0x20 +#define RK808_VB_MON_REG 0x21 +#define RK808_THERMAL_REG 0x22 +#define RK808_DCDC_EN_REG 0x23 +#define RK808_LDO_EN_REG 0x24 +#define RK808_SLEEP_SET_OFF_REG1 0x25 +#define RK808_SLEEP_SET_OFF_REG2 0x26 +#define RK808_DCDC_UV_STS_REG 0x27 +#define RK808_DCDC_UV_ACT_REG 0x28 +#define RK808_LDO_UV_STS_REG 0x29 +#define RK808_LDO_UV_ACT_REG 0x2a +#define RK808_DCDC_PG_REG 0x2b +#define RK808_LDO_PG_REG 0x2c +#define RK808_VOUT_MON_TDB_REG 0x2d +#define RK808_BUCK1_CONFIG_REG 0x2e +#define RK808_BUCK1_ON_VSEL_REG 0x2f +#define RK808_BUCK1_SLP_VSEL_REG 0x30 +#define RK808_BUCK1_DVS_VSEL_REG 0x31 +#define RK808_BUCK2_CONFIG_REG 0x32 +#define RK808_BUCK2_ON_VSEL_REG 0x33 +#define RK808_BUCK2_SLP_VSEL_REG 0x34 +#define RK808_BUCK2_DVS_VSEL_REG 0x35 +#define RK808_BUCK3_CONFIG_REG 0x36 +#define RK808_BUCK4_CONFIG_REG 0x37 +#define RK808_BUCK4_ON_VSEL_REG 0x38 +#define RK808_BUCK4_SLP_VSEL_REG 0x39 +#define RK808_BOOST_CONFIG_REG 0x3a +#define RK808_LDO1_ON_VSEL_REG 0x3b +#define RK808_LDO1_SLP_VSEL_REG 0x3c +#define RK808_LDO2_ON_VSEL_REG 0x3d +#define RK808_LDO2_SLP_VSEL_REG 0x3e +#define RK808_LDO3_ON_VSEL_REG 0x3f +#define RK808_LDO3_SLP_VSEL_REG 0x40 +#define RK808_LDO4_ON_VSEL_REG 0x41 +#define RK808_LDO4_SLP_VSEL_REG 0x42 +#define RK808_LDO5_ON_VSEL_REG 0x43 +#define RK808_LDO5_SLP_VSEL_REG 0x44 +#define RK808_LDO6_ON_VSEL_REG 0x45 +#define RK808_LDO6_SLP_VSEL_REG 0x46 +#define RK808_LDO7_ON_VSEL_REG 0x47 +#define RK808_LDO7_SLP_VSEL_REG 0x48 +#define RK808_LDO8_ON_VSEL_REG 0x49 +#define RK808_LDO8_SLP_VSEL_REG 0x4a +#define RK808_DEVCTRL_REG 0x4b +#define RK808_INT_STS_REG1 0x4c +#define RK808_INT_STS_MSK_REG1 0x4d +#define RK808_INT_STS_REG2 0x4e +#define RK808_INT_STS_MSK_REG2 0x4f +#define RK808_IO_POL_REG 0x50 + +/* IRQ Definitions */ +#define RK808_IRQ_VOUT_LO 0 +#define RK808_IRQ_VB_LO 1 +#define RK808_IRQ_PWRON 2 +#define RK808_IRQ_PWRON_LP 3 +#define RK808_IRQ_HOTDIE 4 +#define RK808_IRQ_RTC_ALARM 5 +#define RK808_IRQ_RTC_PERIOD 6 +#define RK808_IRQ_PLUG_IN_INT 7 +#define RK808_IRQ_PLUG_OUT_INT 8 +#define RK808_NUM_IRQ 9 + +#define RK808_IRQ_VOUT_LO_MSK BIT(0) +#define RK808_IRQ_VB_LO_MSK BIT(1) +#define RK808_IRQ_PWRON_MSK BIT(2) +#define RK808_IRQ_PWRON_LP_MSK BIT(3) +#define RK808_IRQ_HOTDIE_MSK BIT(4) +#define RK808_IRQ_RTC_ALARM_MSK BIT(5) +#define RK808_IRQ_RTC_PERIOD_MSK BIT(6) +#define RK808_IRQ_PLUG_IN_INT_MSK BIT(0) +#define RK808_IRQ_PLUG_OUT_INT_MSK BIT(1) + +#define RK808_VBAT_LOW_2V8 0x00 +#define RK808_VBAT_LOW_2V9 0x01 +#define RK808_VBAT_LOW_3V0 0x02 +#define RK808_VBAT_LOW_3V1 0x03 +#define RK808_VBAT_LOW_3V2 0x04 +#define RK808_VBAT_LOW_3V3 0x05 +#define RK808_VBAT_LOW_3V4 0x06 +#define RK808_VBAT_LOW_3V5 0x07 +#define VBAT_LOW_VOL_MASK (0x07 << 0) +#define EN_VABT_LOW_SHUT_DOWN (0x00 << 4) +#define EN_VBAT_LOW_IRQ (0x1 << 4) +#define VBAT_LOW_ACT_MASK (0x1 << 4) + +#define BUCK_ILMIN_MASK (7 << 0) +#define BOOST_ILMIN_MASK (7 << 0) +#define BUCK1_RATE_MASK (3 << 3) +#define BUCK2_RATE_MASK (3 << 3) +#define MASK_ALL 0xff + +#define SWITCH2_EN BIT(6) +#define SWITCH1_EN BIT(5) +#define DEV_OFF_RST BIT(3) + +#define VB_LO_ACT BIT(4) +#define VB_LO_SEL_3500MV (7 << 0) + +#define VOUT_LO_INT BIT(0) +#define CLK32KOUT2_EN BIT(0) + +enum { + BUCK_ILMIN_50MA, + BUCK_ILMIN_100MA, + BUCK_ILMIN_150MA, + BUCK_ILMIN_200MA, + BUCK_ILMIN_250MA, + BUCK_ILMIN_300MA, + BUCK_ILMIN_350MA, + BUCK_ILMIN_400MA, +}; + +enum { + BOOST_ILMIN_75MA, + BOOST_ILMIN_100MA, + BOOST_ILMIN_125MA, + BOOST_ILMIN_150MA, + BOOST_ILMIN_175MA, + BOOST_ILMIN_200MA, + BOOST_ILMIN_225MA, + BOOST_ILMIN_250MA, +}; + +struct rk808 { + struct i2c_client *i2c; + struct regmap_irq_chip_data *irq_data; + struct regmap *regmap; +}; +#endif /* __LINUX_REGULATOR_rk808_H */