From e3f44f5c891da635123b734a056dd1275eb34d83 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 25 Jul 2017 08:30:12 -0600 Subject: [PATCH] dm: power: Convert as3722 to driver model Convert this PMIC driver to driver model and fix up other users. The regulator and GPIO functions are now handled by separate drivers. Update nyan-big to work correct. Three boards will need to be updated by the maintainers: apalis-tk1, cei-tk1-som. Also the TODO in the code re as3722_sd_set_voltage() needs to be completed. Signed-off-by: Simon Glass Reviewed-by: Lukasz Majewski Tested-by: Marcel Ziswiler Tested-on: Jetson-TK1 Tested-by: Stephen Warren --- arch/arm/mach-tegra/board2.c | 6 - board/cei/cei-tk1-som/cei-tk1-som.c | 2 + board/nvidia/jetson-tk1/jetson-tk1.c | 44 ++-- board/nvidia/nyan-big/nyan-big.c | 22 +- board/toradex/apalis-tk1/apalis-tk1.c | 6 + configs/apalis-tk1_defconfig | 3 + configs/cei-tk1-som_defconfig | 3 + configs/jetson-tk1_defconfig | 3 + configs/nyan-big_defconfig | 1 + drivers/power/pmic/Makefile | 2 +- drivers/power/pmic/as3722.c | 292 +++++++++----------------- include/power/as3722.h | 18 +- 12 files changed, 164 insertions(+), 238 deletions(-) diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c index 181dc30a6b..bd137969f0 100644 --- a/arch/arm/mach-tegra/board2.c +++ b/arch/arm/mach-tegra/board2.c @@ -29,7 +29,6 @@ #ifdef CONFIG_TEGRA_CLOCK_SCALING #include #endif -#include #include "emc.h" DECLARE_GLOBAL_DATA_PTR; @@ -142,11 +141,6 @@ int board_init(void) debug("Memory controller init failed: %d\n", err); # endif # endif /* CONFIG_TEGRA_PMU */ -#ifdef CONFIG_PMIC_AS3722 - err = as3722_init(NULL); - if (err && err != -ENODEV) - return err; -#endif #endif /* CONFIG_SYS_I2C_TEGRA */ #ifdef CONFIG_USB_EHCI_TEGRA diff --git a/board/cei/cei-tk1-som/cei-tk1-som.c b/board/cei/cei-tk1-som/cei-tk1-som.c index 9ba7490c38..7c87bd1eb1 100644 --- a/board/cei/cei-tk1-som/cei-tk1-som.c +++ b/board/cei/cei-tk1-som/cei-tk1-som.c @@ -39,6 +39,7 @@ void pinmux_init(void) #ifdef CONFIG_PCI_TEGRA int tegra_pcie_board_init(void) { +/* TODO: Convert to driver model struct udevice *pmic; int err; @@ -59,6 +60,7 @@ int tegra_pcie_board_init(void) error("failed to set SD4 voltage: %d\n", err); return err; } +*/ return 0; } diff --git a/board/nvidia/jetson-tk1/jetson-tk1.c b/board/nvidia/jetson-tk1/jetson-tk1.c index a66b710cdd..bd08a2eed4 100644 --- a/board/nvidia/jetson-tk1/jetson-tk1.c +++ b/board/nvidia/jetson-tk1/jetson-tk1.c @@ -6,7 +6,9 @@ */ #include +#include #include +#include #include #include @@ -37,27 +39,45 @@ void pinmux_init(void) } #ifdef CONFIG_PCI_TEGRA -int tegra_pcie_board_init(void) +/* TODO: Convert to driver model */ +static int as3722_sd_enable(struct udevice *pmic, unsigned int sd) { - struct udevice *pmic; int err; - err = as3722_init(&pmic); + if (sd > 6) + return -EINVAL; + + err = pmic_clrsetbits(pmic, AS3722_SD_CONTROL, 0, 1 << sd); if (err) { - error("failed to initialize AS3722 PMIC: %d\n", err); + error("failed to update SD control register: %d", err); return err; } - err = as3722_sd_enable(pmic, 4); - if (err < 0) { - error("failed to enable SD4: %d\n", err); - return err; + return 0; +} + +int tegra_pcie_board_init(void) +{ + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_PMIC, + DM_GET_DRIVER(pmic_as3722), &dev); + if (ret) { + debug("%s: Failed to find PMIC\n", __func__); + return ret; } - err = as3722_sd_set_voltage(pmic, 4, 0x24); - if (err < 0) { - error("failed to set SD4 voltage: %d\n", err); - return err; + ret = as3722_sd_enable(dev, 4); + if (ret < 0) { + error("failed to enable SD4: %d\n", ret); + return ret; + } + + ret = as3722_sd_set_voltage(dev, 4, 0x24); + if (ret < 0) { + error("failed to set SD4 voltage: %d\n", ret); + return ret; } return 0; diff --git a/board/nvidia/nyan-big/nyan-big.c b/board/nvidia/nyan-big/nyan-big.c index 8f68ae9fbe..54acf5418d 100644 --- a/board/nvidia/nyan-big/nyan-big.c +++ b/board/nvidia/nyan-big/nyan-big.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -46,20 +47,23 @@ int tegra_board_id(void) int tegra_lcd_pmic_init(int board_id) { - struct udevice *pmic; + struct udevice *dev; int ret; - ret = as3722_get(&pmic); - if (ret) - return -ENOENT; + ret = uclass_get_device_by_driver(UCLASS_PMIC, + DM_GET_DRIVER(pmic_as3722), &dev); + if (ret) { + debug("%s: Failed to find PMIC\n", __func__); + return ret; + } if (board_id == 0) - as3722_write(pmic, 0x00, 0x3c); + pmic_reg_write(dev, 0x00, 0x3c); else - as3722_write(pmic, 0x00, 0x50); - as3722_write(pmic, 0x12, 0x10); - as3722_write(pmic, 0x0c, 0x07); - as3722_write(pmic, 0x20, 0x10); + pmic_reg_write(dev, 0x00, 0x50); + pmic_reg_write(dev, 0x12, 0x10); + pmic_reg_write(dev, 0x0c, 0x07); + pmic_reg_write(dev, 0x20, 0x10); return 0; } diff --git a/board/toradex/apalis-tk1/apalis-tk1.c b/board/toradex/apalis-tk1/apalis-tk1.c index c7e519c19b..5de61e7c2b 100644 --- a/board/toradex/apalis-tk1/apalis-tk1.c +++ b/board/toradex/apalis-tk1/apalis-tk1.c @@ -61,6 +61,7 @@ void pinmux_init(void) #ifdef CONFIG_PCI_TEGRA int tegra_pcie_board_init(void) { + /* TODO: Convert to driver model struct udevice *pmic; int err; @@ -94,6 +95,7 @@ int tegra_pcie_board_init(void) error("failed to set GPIO#2 high: %d\n", err); return err; } + */ /* Reset I210 Gigabit Ethernet Controller */ gpio_request(LAN_RESET_N, "LAN_RESET_N"); @@ -110,6 +112,7 @@ int tegra_pcie_board_init(void) gpio_direction_output(TEGRA_GPIO(O, 6), 0); /* Make sure LDO9 and LDO10 are initially enabled @ 0V */ + /* TODO: Convert to driver model err = as3722_ldo_enable(pmic, 9); if (err < 0) { error("failed to enable LDO9: %d\n", err); @@ -130,6 +133,7 @@ int tegra_pcie_board_init(void) error("failed to set LDO10 voltage: %d\n", err); return err; } + */ mdelay(100); @@ -137,6 +141,7 @@ int tegra_pcie_board_init(void) gpio_set_value(TEGRA_GPIO(O, 6), 1); /* Enable LDO9 and LDO10 for +V3.3_ETH on patched prototypes */ + /* TODO: Convert to driver model err = as3722_ldo_set_voltage(pmic, 9, 0xff); if (err < 0) { error("failed to set LDO9 voltage: %d\n", err); @@ -147,6 +152,7 @@ int tegra_pcie_board_init(void) error("failed to set LDO10 voltage: %d\n", err); return err; } + */ mdelay(100); gpio_set_value(LAN_RESET_N, 1); diff --git a/configs/apalis-tk1_defconfig b/configs/apalis-tk1_defconfig index 9179aaf92f..ccff112392 100644 --- a/configs/apalis-tk1_defconfig +++ b/configs/apalis-tk1_defconfig @@ -32,7 +32,10 @@ CONFIG_PCI=y CONFIG_DM_PCI=y CONFIG_DM_PCI_COMPAT=y CONFIG_PCI_TEGRA=y +CONFIG_DM_PMIC=y CONFIG_PMIC_AS3722=y +CONFIG_DM_REGULATOR=y +CONFIG_REGULATOR_AS3722=y CONFIG_SYS_NS16550=y CONFIG_USB=y CONFIG_DM_USB=y diff --git a/configs/cei-tk1-som_defconfig b/configs/cei-tk1-som_defconfig index 1a5e47dba5..5623bbfbc6 100644 --- a/configs/cei-tk1-som_defconfig +++ b/configs/cei-tk1-som_defconfig @@ -36,7 +36,10 @@ CONFIG_PCI=y CONFIG_DM_PCI=y CONFIG_DM_PCI_COMPAT=y CONFIG_PCI_TEGRA=y +CONFIG_DM_PMIC=y CONFIG_PMIC_AS3722=y +CONFIG_DM_REGULATOR=y +CONFIG_REGULATOR_AS3722=y CONFIG_SYS_NS16550=y CONFIG_TEGRA114_SPI=y CONFIG_USB=y diff --git a/configs/jetson-tk1_defconfig b/configs/jetson-tk1_defconfig index 65a5832e44..d086951299 100644 --- a/configs/jetson-tk1_defconfig +++ b/configs/jetson-tk1_defconfig @@ -36,7 +36,10 @@ CONFIG_PCI=y CONFIG_DM_PCI=y CONFIG_DM_PCI_COMPAT=y CONFIG_PCI_TEGRA=y +CONFIG_DM_PMIC=y CONFIG_PMIC_AS3722=y +CONFIG_DM_REGULATOR=y +CONFIG_REGULATOR_AS3722=y CONFIG_SYS_NS16550=y CONFIG_TEGRA114_SPI=y CONFIG_USB=y diff --git a/configs/nyan-big_defconfig b/configs/nyan-big_defconfig index 8183856d94..1ad7c0bf68 100644 --- a/configs/nyan-big_defconfig +++ b/configs/nyan-big_defconfig @@ -50,6 +50,7 @@ CONFIG_SPI_FLASH_WINBOND=y CONFIG_DM_PMIC=y CONFIG_PMIC_AS3722=y CONFIG_DM_REGULATOR=y +CONFIG_REGULATOR_AS3722=y CONFIG_DM_REGULATOR_FIXED=y CONFIG_PWM_TEGRA=y CONFIG_DEBUG_UART_BASE=0x70006000 diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index f488799a92..f7bdfa5609 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -12,7 +12,7 @@ obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o obj-$(CONFIG_PMIC_ACT8846) += act8846.o -obj-$(CONFIG_PMIC_AS3722) += as3722.o +obj-$(CONFIG_PMIC_AS3722) += as3722.o as3722_gpio.o obj-$(CONFIG_PMIC_MAX8997) += max8997.o obj-$(CONFIG_PMIC_PM8916) += pm8916.o obj-$(CONFIG_PMIC_RK8XX) += rk8xx.o diff --git a/drivers/power/pmic/as3722.c b/drivers/power/pmic/as3722.c index c09e1de06f..4efe8ee183 100644 --- a/drivers/power/pmic/as3722.c +++ b/drivers/power/pmic/as3722.c @@ -11,264 +11,168 @@ #include #include #include - +#include #include +#include -#define AS3722_SD_VOLTAGE(n) (0x00 + (n)) -#define AS3722_GPIO_CONTROL(n) (0x08 + (n)) -#define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH (1 << 0) -#define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDL (7 << 0) -#define AS3722_GPIO_CONTROL_INVERT (1 << 7) -#define AS3722_LDO_VOLTAGE(n) (0x10 + (n)) -#define AS3722_GPIO_SIGNAL_OUT 0x20 -#define AS3722_SD_CONTROL 0x4d -#define AS3722_LDO_CONTROL 0x4e -#define AS3722_ASIC_ID1 0x90 -#define AS3722_DEVICE_ID 0x0c -#define AS3722_ASIC_ID2 0x91 - -int as3722_read(struct udevice *pmic, u8 reg, u8 *value) -{ - int err; - - err = dm_i2c_read(pmic, reg, value, 1); - if (err < 0) - return err; - - return 0; -} +#define AS3722_NUM_OF_REGS 0x92 -int as3722_write(struct udevice *pmic, u8 reg, u8 value) +static int as3722_read(struct udevice *dev, uint reg, uint8_t *buff, int len) { - int err; + int ret; - err = dm_i2c_write(pmic, reg, &value, 1); - if (err < 0) - return err; + ret = dm_i2c_read(dev, reg, buff, len); + if (ret < 0) + return ret; return 0; } -static int as3722_read_id(struct udevice *pmic, u8 *id, u8 *revision) +static int as3722_write(struct udevice *dev, uint reg, const uint8_t *buff, + int len) { - int err; + int ret; - err = as3722_read(pmic, AS3722_ASIC_ID1, id); - if (err) { - error("failed to read ID1 register: %d", err); - return err; - } - - err = as3722_read(pmic, AS3722_ASIC_ID2, revision); - if (err) { - error("failed to read ID2 register: %d", err); - return err; - } + ret = dm_i2c_write(dev, reg, buff, len); + if (ret < 0) + return ret; return 0; } -int as3722_sd_enable(struct udevice *pmic, unsigned int sd) +static int as3722_read_id(struct udevice *dev, uint *idp, uint *revisionp) { - u8 value; - int err; - - if (sd > 6) - return -EINVAL; + int ret; - err = as3722_read(pmic, AS3722_SD_CONTROL, &value); - if (err) { - error("failed to read SD control register: %d", err); - return err; + ret = pmic_reg_read(dev, AS3722_ASIC_ID1); + if (ret < 0) { + error("failed to read ID1 register: %d", ret); + return ret; } + *idp = ret; - value |= 1 << sd; - - err = as3722_write(pmic, AS3722_SD_CONTROL, value); - if (err < 0) { - error("failed to write SD control register: %d", err); - return err; + ret = pmic_reg_read(dev, AS3722_ASIC_ID2); + if (ret < 0) { + error("failed to read ID2 register: %d", ret); + return ret; } + *revisionp = ret; return 0; } -int as3722_sd_set_voltage(struct udevice *pmic, unsigned int sd, u8 value) +/* TODO(treding@nvidia.com): Add proper regulator support to avoid this */ +int as3722_sd_set_voltage(struct udevice *dev, unsigned int sd, u8 value) { - int err; + int ret; if (sd > 6) return -EINVAL; - err = as3722_write(pmic, AS3722_SD_VOLTAGE(sd), value); - if (err < 0) { - error("failed to write SD%u voltage register: %d", sd, err); - return err; + ret = pmic_reg_write(dev, AS3722_SD_VOLTAGE(sd), value); + if (ret < 0) { + error("failed to write SD%u voltage register: %d", sd, ret); + return ret; } return 0; } -int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo) +int as3722_ldo_set_voltage(struct udevice *dev, unsigned int ldo, u8 value) { - u8 value; - int err; + int ret; if (ldo > 11) return -EINVAL; - err = as3722_read(pmic, AS3722_LDO_CONTROL, &value); - if (err) { - error("failed to read LDO control register: %d", err); - return err; - } - - value |= 1 << ldo; - - err = as3722_write(pmic, AS3722_LDO_CONTROL, value); - if (err < 0) { - error("failed to write LDO control register: %d", err); - return err; - } - - return 0; -} - -int as3722_ldo_set_voltage(struct udevice *pmic, unsigned int ldo, u8 value) -{ - int err; - - if (ldo > 11) - return -EINVAL; - - err = as3722_write(pmic, AS3722_LDO_VOLTAGE(ldo), value); - if (err < 0) { + ret = pmic_reg_write(dev, AS3722_LDO_VOLTAGE(ldo), value); + if (ret < 0) { error("failed to write LDO%u voltage register: %d", ldo, - err); - return err; + ret); + return ret; } return 0; } -int as3722_gpio_configure(struct udevice *pmic, unsigned int gpio, - unsigned long flags) +static int as3722_probe(struct udevice *dev) { - u8 value = 0; - int err; + uint id, revision; + int ret; - if (flags & AS3722_GPIO_OUTPUT_VDDH) - value |= AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH; - - if (flags & AS3722_GPIO_INVERT) - value |= AS3722_GPIO_CONTROL_INVERT; - - err = as3722_write(pmic, AS3722_GPIO_CONTROL(gpio), value); - if (err) { - error("failed to configure GPIO#%u: %d", gpio, err); - return err; + ret = as3722_read_id(dev, &id, &revision); + if (ret < 0) { + error("failed to read ID: %d", ret); + return ret; } - return 0; -} - -static int as3722_gpio_set(struct udevice *pmic, unsigned int gpio, - unsigned int level) -{ - const char *l; - u8 value; - int err; - - if (gpio > 7) - return -EINVAL; - - err = as3722_read(pmic, AS3722_GPIO_SIGNAL_OUT, &value); - if (err < 0) { - error("failed to read GPIO signal out register: %d", err); - return err; - } - - if (level == 0) { - value &= ~(1 << gpio); - l = "low"; - } else { - value |= 1 << gpio; - l = "high"; + if (id != AS3722_DEVICE_ID) { + error("unknown device"); + return -ENOENT; } - err = as3722_write(pmic, AS3722_GPIO_SIGNAL_OUT, value); - if (err) { - error("failed to set GPIO#%u %s: %d", gpio, l, err); - return err; - } + debug("AS3722 revision %#x found on I2C bus %s\n", revision, dev->name); return 0; } -int as3722_gpio_direction_output(struct udevice *pmic, unsigned int gpio, - unsigned int level) -{ - u8 value; - int err; - - if (gpio > 7) - return -EINVAL; +#if CONFIG_IS_ENABLED(PMIC_CHILDREN) +static const struct pmic_child_info pmic_children_info[] = { + { .prefix = "sd", .driver = "as3722_stepdown"}, + { .prefix = "ldo", .driver = "as3722_ldo"}, + { }, +}; - if (level == 0) - value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDL; - else - value = AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH; +static int as3722_bind(struct udevice *dev) +{ + struct udevice *gpio_dev; + ofnode regulators_node; + int children; + int ret; - err = as3722_write(pmic, AS3722_GPIO_CONTROL(gpio), value); - if (err) { - error("failed to configure GPIO#%u as output: %d", gpio, err); - return err; + regulators_node = dev_read_subnode(dev, "regulators"); + if (!ofnode_valid(regulators_node)) { + debug("%s: %s regulators subnode not found\n", __func__, + dev->name); + return -ENXIO; } - err = as3722_gpio_set(pmic, gpio, level); - if (err < 0) { - error("failed to set GPIO#%u high: %d", gpio, err); - return err; + children = pmic_bind_children(dev, regulators_node, pmic_children_info); + if (!children) + debug("%s: %s - no child found\n", __func__, dev->name); + ret = device_bind_driver(dev, "gpio_as3722", "gpio_as3722", &gpio_dev); + if (ret) { + debug("%s: Cannot bind GPIOs (ret=%d)\n", __func__, ret); + return ret; } return 0; } +#endif -/* Temporary function until we get the pmic framework */ -int as3722_get(struct udevice **devp) +static int as3722_reg_count(struct udevice *dev) { - int bus = 0; - int address = 0x40; - - return i2c_get_chip_for_busnum(bus, address, 1, devp); + return AS3722_NUM_OF_REGS; } -int as3722_init(struct udevice **devp) -{ - struct udevice *pmic; - u8 id, revision; - const unsigned int bus = 0; - const unsigned int address = 0x40; - int err; - - err = i2c_get_chip_for_busnum(bus, address, 1, &pmic); - if (err) - return err; - err = as3722_read_id(pmic, &id, &revision); - if (err < 0) { - error("failed to read ID: %d", err); - return err; - } - - if (id != AS3722_DEVICE_ID) { - error("unknown device"); - return -ENOENT; - } - - debug("AS3722 revision %#x found on I2C bus %u, address %#x\n", - revision, bus, address); - if (devp) - *devp = pmic; - - return 0; -} +static struct dm_pmic_ops as3722_ops = { + .reg_count = as3722_reg_count, + .read = as3722_read, + .write = as3722_write, +}; + +static const struct udevice_id as3722_ids[] = { + { .compatible = "ams,as3722" }, + { } +}; + +U_BOOT_DRIVER(pmic_as3722) = { + .name = "as3722_pmic", + .id = UCLASS_PMIC, + .of_match = as3722_ids, +#if CONFIG_IS_ENABLED(PMIC_CHILDREN) + .bind = as3722_bind, +#endif + .probe = as3722_probe, + .ops = &as3722_ops, +}; diff --git a/include/power/as3722.h b/include/power/as3722.h index 713e79840f..cb4b188bcf 100644 --- a/include/power/as3722.h +++ b/include/power/as3722.h @@ -7,8 +7,6 @@ #ifndef __POWER_AS3722_H__ #define __POWER_AS3722_H__ -#include - #define AS3722_GPIO_OUTPUT_VDDH (1 << 0) #define AS3722_GPIO_INVERT (1 << 1) @@ -21,23 +19,11 @@ #define AS3722_ASIC_ID2 0x91 #define AS3722_GPIO_CONTROL(n) (0x08 + (n)) +#define AS3722_GPIO_SIGNAL_OUT 0x20 #define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH (1 << 0) #define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDL (7 << 0) #define AS3722_GPIO_CONTROL_INVERT (1 << 7) -struct udevice; - -int as3722_init(struct udevice **devp); -int as3722_sd_enable(struct udevice *pmic, unsigned int sd); -int as3722_sd_set_voltage(struct udevice *pmic, unsigned int sd, u8 value); -int as3722_ldo_enable(struct udevice *pmic, unsigned int ldo); -int as3722_ldo_set_voltage(struct udevice *pmic, unsigned int ldo, u8 value); -int as3722_gpio_configure(struct udevice *pmic, unsigned int gpio, - unsigned long flags); -int as3722_gpio_direction_output(struct udevice *pmic, unsigned int gpio, - unsigned int level); -int as3722_read(struct udevice *pmic, u8 reg, u8 *value); -int as3722_write(struct udevice *pmic, u8 reg, u8 value); -int as3722_get(struct udevice **devp); +int as3722_sd_set_voltage(struct udevice *dev, unsigned int sd, u8 value); #endif /* __POWER_AS3722_H__ */ -- 2.25.1