Add auxiliary reset driver to support StarFive JHB100 SoC. The StarFive JHB100 SoC has discontiguous reset IDs. A new function reset_starfive_register_with_info() is introduced to support both contiguous and discontiguous hardware designs.
Signed-off-by: Changhuang Liang <[email protected]> --- MAINTAINERS | 6 + drivers/reset/starfive/Kconfig | 9 + drivers/reset/starfive/Makefile | 1 + .../reset/starfive/reset-starfive-common.c | 99 +++++- .../reset/starfive/reset-starfive-common.h | 19 ++ .../reset/starfive/reset-starfive-jhb100.c | 302 ++++++++++++++++++ 6 files changed, 425 insertions(+), 11 deletions(-) create mode 100644 drivers/reset/starfive/reset-starfive-jhb100.c diff --git a/MAINTAINERS b/MAINTAINERS index c48b56d0ab94..709600e80951 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -26088,6 +26088,12 @@ S: Supported F: Documentation/devicetree/bindings/interrupt-controller/starfive,jhb100-intc.yaml F: drivers/irqchip/irq-starfive-jhb100-intc.c +STARFIVE JHB100 RESET CONTROLLER DRIVERS +M: Changhuang Liang <[email protected]> +S: Maintained +F: drivers/reset/starfive/reset-starfive-jhb1* +F: include/dt-bindings/reset/starfive,jhb1*.h + STATIC BRANCH/CALL M: Peter Zijlstra <[email protected]> M: Josh Poimboeuf <[email protected]> diff --git a/drivers/reset/starfive/Kconfig b/drivers/reset/starfive/Kconfig index 29fbcf1a7d83..ce00495be6ad 100644 --- a/drivers/reset/starfive/Kconfig +++ b/drivers/reset/starfive/Kconfig @@ -19,3 +19,12 @@ config RESET_STARFIVE_JH7110 default ARCH_STARFIVE help This enables the reset controller driver for the StarFive JH7110 SoC. + +config RESET_STARFIVE_JHB100 + bool "StarFive JHB100 Reset Driver" + depends on CLK_STARFIVE_COMMON || COMPILE_TEST + select AUXILIARY_BUS + select RESET_STARFIVE_COMMON + default ARCH_STARFIVE + help + This enables the reset controller driver for the StarFive JHB100 SoC. diff --git a/drivers/reset/starfive/Makefile b/drivers/reset/starfive/Makefile index 582e4c160bd4..217002302a9f 100644 --- a/drivers/reset/starfive/Makefile +++ b/drivers/reset/starfive/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_RESET_STARFIVE_COMMON) += reset-starfive-common.o obj-$(CONFIG_RESET_STARFIVE_JH7100) += reset-starfive-jh7100.o obj-$(CONFIG_RESET_STARFIVE_JH7110) += reset-starfive-jh7110.o +obj-$(CONFIG_RESET_STARFIVE_JHB100) += reset-starfive-jhb100.o diff --git a/drivers/reset/starfive/reset-starfive-common.c b/drivers/reset/starfive/reset-starfive-common.c index 772bdf6763d1..86dbb33bb216 100644 --- a/drivers/reset/starfive/reset-starfive-common.c +++ b/drivers/reset/starfive/reset-starfive-common.c @@ -14,6 +14,8 @@ #include "reset-starfive-common.h" +#define STARFIVE_RESET_ID_INVALID ULONG_MAX + struct starfive_reset { struct reset_controller_dev rcdev; /* protect registers against concurrent read-modify-write */ @@ -21,6 +23,11 @@ struct starfive_reset { void __iomem *assert; void __iomem *status; const u32 *asserted; + + /* Only exists in reset controllers that use the + * reset_starfive_register_with_info helper. + */ + const struct starfive_reset_info *info; }; static inline struct starfive_reset * @@ -29,19 +36,40 @@ starfive_reset_from(struct reset_controller_dev *rcdev) return container_of(rcdev, struct starfive_reset, rcdev); } +static unsigned long +starfive_reset_id_to_hw_id(const struct starfive_reset_map *map, unsigned int nr_resets, + unsigned long reset_id) +{ + for (u32 i = 0; i < nr_resets; i++) { + if (map[i].reset_id == reset_id) + return map[i].hw_id; + } + + return STARFIVE_RESET_ID_INVALID; +} + static int starfive_reset_update(struct reset_controller_dev *rcdev, unsigned long id, bool assert) { struct starfive_reset *data = starfive_reset_from(rcdev); - unsigned long offset = id / 32; - u32 mask = BIT(id % 32); - void __iomem *reg_assert = data->assert + offset * sizeof(u32); - void __iomem *reg_status = data->status + offset * sizeof(u32); - u32 done = data->asserted ? data->asserted[offset] & mask : 0; - u32 value; - unsigned long flags; + unsigned long offset, flags; + void __iomem *reg_assert; + void __iomem *reg_status; + u32 mask, done, value; int ret; + if (data->info && data->info->discontiguous) { + id = starfive_reset_id_to_hw_id(data->info->map, data->info->nr_resets, id); + if (id == STARFIVE_RESET_ID_INVALID) + return -EINVAL; + } + + offset = id / 32; + mask = BIT(id % 32); + reg_assert = data->assert + offset * sizeof(u32); + reg_status = data->status + offset * sizeof(u32); + done = data->asserted ? data->asserted[offset] & mask : 0; + if (!assert) done ^= mask; @@ -89,10 +117,20 @@ static int starfive_reset_status(struct reset_controller_dev *rcdev, unsigned long id) { struct starfive_reset *data = starfive_reset_from(rcdev); - unsigned long offset = id / 32; - u32 mask = BIT(id % 32); - void __iomem *reg_status = data->status + offset * sizeof(u32); - u32 value = readl(reg_status); + void __iomem *reg_status; + unsigned long offset; + u32 mask, value; + + if (data->info && data->info->discontiguous) { + id = starfive_reset_id_to_hw_id(data->info->map, data->info->nr_resets, id); + if (id == STARFIVE_RESET_ID_INVALID) + return -EINVAL; + } + + offset = id / 32; + mask = BIT(id % 32); + reg_status = data->status + offset * sizeof(u32); + value = readl(reg_status); if (!data->asserted) return !(value & mask); @@ -132,3 +170,42 @@ int reset_starfive_register(struct device *dev, struct device_node *of_node, return devm_reset_controller_register(dev, &data->rcdev); } EXPORT_SYMBOL_GPL(reset_starfive_register); + +int reset_starfive_register_with_info(struct device *dev, struct device_node *of_node, + void __iomem *assert, void __iomem *status, + const u32 *asserted, + const struct starfive_reset_info *info, + struct module *owner) +{ + struct starfive_reset *data; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->rcdev.ops = &starfive_reset_ops; + data->rcdev.owner = owner; + data->rcdev.nr_resets = info->nr_resets; + data->rcdev.dev = dev; + data->rcdev.of_node = of_node; + + spin_lock_init(&data->lock); + data->assert = assert; + data->status = status; + data->asserted = asserted; + data->info = info; + + if (info->discontiguous && (!info->map || !info->nr_resets)) + return dev_err_probe(dev, -EINVAL, + "discontiguous controller without a valid ID map\n"); + + ret = devm_reset_controller_register(dev, &data->rcdev); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to register reset controller"); + + dev_info(dev, "Registered %u resets", data->rcdev.nr_resets); + + return 0; +} +EXPORT_SYMBOL_GPL(reset_starfive_register_with_info); diff --git a/drivers/reset/starfive/reset-starfive-common.h b/drivers/reset/starfive/reset-starfive-common.h index 83461b22ee55..0d4e634de58e 100644 --- a/drivers/reset/starfive/reset-starfive-common.h +++ b/drivers/reset/starfive/reset-starfive-common.h @@ -6,9 +6,28 @@ #ifndef __RESET_STARFIVE_COMMON_H #define __RESET_STARFIVE_COMMON_H +struct starfive_reset_map { + unsigned long reset_id; + unsigned long hw_id; +}; + +struct starfive_reset_info { + unsigned int nr_resets; + unsigned int assert_offset; + unsigned int status_offset; + bool discontiguous; + const struct starfive_reset_map *map; +}; + int reset_starfive_register(struct device *dev, struct device_node *of_node, void __iomem *assert, void __iomem *status, const u32 *asserted, unsigned int nr_resets, struct module *owner); +int reset_starfive_register_with_info(struct device *dev, struct device_node *of_node, + void __iomem *assert, void __iomem *status, + const u32 *asserted, + const struct starfive_reset_info *info, + struct module *owner); + #endif /* __RESET_STARFIVE_COMMON_H */ diff --git a/drivers/reset/starfive/reset-starfive-jhb100.c b/drivers/reset/starfive/reset-starfive-jhb100.c new file mode 100644 index 000000000000..ed8acd34fde2 --- /dev/null +++ b/drivers/reset/starfive/reset-starfive-jhb100.c @@ -0,0 +1,302 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Reset driver for the StarFive JHB100 SoC + * + * Copyright (C) 2024 StarFive Technology Co., Ltd. + * + * Author: Changhuang Liang <[email protected]> + */ + +#include <dt-bindings/reset/starfive,jhb100-crg.h> +#include <linux/auxiliary_bus.h> +#include <soc/starfive/reset-starfive-common.h> + +#include "reset-starfive-common.h" + +#define NUM_RESETS(x) ((x) + 1) + +static const struct starfive_reset_map jhb100_sys0_map[] = { + { JHB100_SYS0RST_RESOURCE_ARB, 0 }, + { JHB100_SYS0RST_SYS0_IOMUX_PRESETN, 3 }, + { JHB100_SYS0RST_SYS0H_IOMUX_PRESETN, 4 }, + { JHB100_SYS0RST_RST_ADAPTOR_TIMEOUT_RSTN, 5 }, + { JHB100_SYS0RST_BMCPCIERP_RSTN_BUS, 14 }, + { JHB100_SYS0RST_BMCPCIERP_RSTN_CRG, 15 }, + { JHB100_SYS0RST_HOSTSS0_RSTN_BUS_ESPI, 16 }, + { JHB100_SYS0RST_HOSTSS0_RSTN_BUS_PCIE, 17 }, + { JHB100_SYS0RST_HOSTSS0_RSTN_CRG, 18 }, + { JHB100_SYS0RST_BMCPERIPH2_RSTN_CRG, 19 }, + { JHB100_SYS0RST_BMCPERIPH2_RSTN_BUS, 20 }, + { JHB100_SYS0RST_VCE_RSTN_CRG, 21 }, + { JHB100_SYS0RST_VCE_RSTN_BUS, 22 }, + { JHB100_SYS0RST_BMCUSB_RSTN_BUS, 23 }, + { JHB100_SYS0RST_BMCUSB_RSTN_CRG, 24 }, +}; + +static const struct starfive_reset_info jhb100_sys0_info = { + .nr_resets = ARRAY_SIZE(jhb100_sys0_map), + .assert_offset = 0x12c, + .status_offset = 0x130, + .discontiguous = true, + .map = jhb100_sys0_map, +}; + +static const struct starfive_reset_map jhb100_sys1_map[] = { + { JHB100_SYS1RST_SYS1_IOMUX_PRESETN, 1 }, + { JHB100_SYS1RST_MAIN_RSTN_CHIPTOP_SENSOR, 5 }, + { JHB100_SYS1RST_VOUT_RSTN_HOST0, 8 }, + { JHB100_SYS1RST_VOUT_RSTN_HOST1, 9 }, + { JHB100_SYS1RST_HOSTSS1_RSTN_BUS_ESPI, 10 }, + { JHB100_SYS1RST_HOSTSS1_RSTN_BUS_PCIE, 11 }, + { JHB100_SYS1RST_HOSTSS1_RSTN_CRG, 12 }, + { JHB100_SYS1RST_BMCPERIPH3_RSTN_CRG, 13 }, + { JHB100_SYS1RST_BMCPERIPH3_RSTN_BUS, 14 }, +}; + +static const struct starfive_reset_info jhb100_sys1_info = { + .nr_resets = ARRAY_SIZE(jhb100_sys1_map), + .assert_offset = 0x54, + .status_offset = 0x58, + .discontiguous = true, + .map = jhb100_sys1_map, +}; + +static const struct starfive_reset_map jhb100_sys2_map[] = { + { JHB100_SYS2RST_JTAG0_MST_WRAP_HRESETN, 2 }, + { JHB100_SYS2RST_JTAG0_MST_WRAP_APB_PRESETN, 3 }, + { JHB100_SYS2RST_JTAG1_MST_WRAP_HRESETN, 4 }, + { JHB100_SYS2RST_JTAG1_MST_WRAP_APB_PRESETN, 5 }, + { JHB100_SYS2RST_HUSBCMN_HOSTCMN_RSTN_BUS_NCNOC_INIT, 8 }, + { JHB100_SYS2RST_HUSBCMN_RSTN_HOSTCMN_CRG, 9 }, + { JHB100_SYS2RST_HUSBCMN_HOSTUSB0_RSTN_BUS_NCNOC_BMC_TARG, 10 }, + { JHB100_SYS2RST_HUSBCMN_HOSTUSB0_RSTN_BUS_NCNOC_HOST_TARG, 11 }, + { JHB100_SYS2RST_HUSBCMN_RSTN_BMC_CRG, 12 }, + { JHB100_SYS2RST_HUSBCMN_RSTN_HOSTUSB0_CRG, 13 }, + { JHB100_SYS2RST_HUSBCMN_HOSTUSB1_RSTN_BUS_NCNOC_BMC_TARG, 14 }, + { JHB100_SYS2RST_HUSBCMN_HOSTUSB1_RSTN_BUS_NCNOC_HOST_TARG, 15 }, + { JHB100_SYS2RST_HUSBCMN_RSTN_HOSTUSB1_CRG, 16 }, + { JHB100_SYS2RST_BMCPERIPH1_RSTN_CRG, 17 }, + { JHB100_SYS2RST_BMCPERIPH1_RSTN_BUS, 18 }, + { JHB100_SYS2RST_BMCPERIPH0_RSTN_CRG, 19 }, + { JHB100_SYS2RST_BMCPERIPH0_RSTN_BUS, 20 }, + { JHB100_SYS2RST_GPU0_RSTN_CRG, 21 }, + { JHB100_SYS2RST_GPU0_RSTN_BUS, 22 }, + { JHB100_SYS2RST_GPU0_HOST_PCIE_RST_N, 23 }, + { JHB100_SYS2RST_GPU1_RSTN_CRG, 24 }, + { JHB100_SYS2RST_GPU1_RSTN_BUS, 25 }, + { JHB100_SYS2RST_GPU1_HOST_PCIE_RST_N, 26 }, +}; +static const struct starfive_reset_info jhb100_sys2_info = { + .nr_resets = ARRAY_SIZE(jhb100_sys2_map), + .assert_offset = 0x88, + .status_offset = 0x8c, + .discontiguous = true, + .map = jhb100_sys2_map, +}; + +static const struct starfive_reset_map jhb100_per0_map[] = { + { JHB100_PER0RST_MAIN_RSTN_UART4, 1 }, + { JHB100_PER0RST_MAIN_RSTN_UART5, 2 }, + { JHB100_PER0RST_MAIN_RSTN_UART6, 3 }, + { JHB100_PER0RST_MAIN_RSTN_UART7, 4 }, + { JHB100_PER0RST_MAIN_RSTN_UART8, 5 }, + { JHB100_PER0RST_MAIN_RSTN_UART9, 6 }, + { JHB100_PER0RST_MAIN_RSTN_UART10, 7 }, + { JHB100_PER0RST_MAIN_RSTN_UART11, 8 }, + { JHB100_PER0RST_MAIN_RSTN_UART12, 9 }, + { JHB100_PER0RST_MAIN_RSTN_UART13, 10 }, + { JHB100_PER0RST_MAIN_RSTN_UART14, 11 }, + { JHB100_PER0RST_MAIN_RSTN_I2C0, 12 }, + { JHB100_PER0RST_MAIN_RSTN_I2C1, 13 }, + { JHB100_PER0RST_MAIN_RSTN_I2C2, 14 }, + { JHB100_PER0RST_MAIN_RSTN_I2C3, 15 }, + { JHB100_PER0RST_MAIN_RSTN_I2C4, 16 }, + { JHB100_PER0RST_MAIN_RSTN_I2C5, 17 }, + { JHB100_PER0RST_MAIN_RSTN_I2C6, 18 }, + { JHB100_PER0RST_MAIN_RSTN_I2C7, 19 }, + { JHB100_PER0RST_MAIN_RSTN_I2C8, 20 }, + { JHB100_PER0RST_MAIN_RSTN_I2C9, 21 }, + { JHB100_PER0RST_MAIN_RSTN_I2C10, 22 }, + { JHB100_PER0RST_MAIN_RSTN_I2C11, 23 }, + { JHB100_PER0RST_MAIN_RSTN_I2C12, 24 }, + { JHB100_PER0RST_MAIN_RSTN_I2C13, 25 }, + { JHB100_PER0RST_MAIN_RSTN_I2C14, 26 }, + { JHB100_PER0RST_MAIN_RSTN_I2C15, 27 }, + { JHB100_PER0RST_MAIN_RSTN_I3C0, 28 }, + { JHB100_PER0RST_MAIN_RSTN_I3C1, 29 }, + { JHB100_PER0RST_MAIN_RSTN_I3C2, 30 }, + { JHB100_PER0RST_MAIN_RSTN_I3C3, 31 }, + { JHB100_PER0RST_MAIN_RSTN_I3C4, 32 }, + { JHB100_PER0RST_MAIN_RSTN_I3C5, 33 }, + { JHB100_PER0RST_MAIN_RSTN_I3C6, 34 }, + { JHB100_PER0RST_MAIN_RSTN_I3C7, 35 }, + { JHB100_PER0RST_MAIN_RSTN_I3C8, 36 }, + { JHB100_PER0RST_MAIN_RSTN_I3C9, 37 }, + { JHB100_PER0RST_MAIN_RSTN_I3C10, 38 }, + { JHB100_PER0RST_MAIN_RSTN_I3C11, 39 }, + { JHB100_PER0RST_MAIN_RSTN_I3C12, 40 }, + { JHB100_PER0RST_MAIN_RSTN_I3C13, 41 }, + { JHB100_PER0RST_MAIN_RSTN_I3C14, 42 }, + { JHB100_PER0RST_MAIN_RSTN_I3C15, 43 }, + { JHB100_PER0RST_MAIN_RSTN_WDT0, 44 }, + { JHB100_PER0RST_MAIN_RSTN_WDT1, 45 }, + { JHB100_PER0RST_MAIN_RSTN_WDT2, 46 }, + { JHB100_PER0RST_MAIN_RSTN_WDT3, 47 }, + { JHB100_PER0RST_MAIN_RSTN_WDT4, 48 }, + { JHB100_PER0RST_MAIN_RSTN_DUALTIMER0, 49 }, + { JHB100_PER0RST_MAIN_RSTN_DUALTIMER1, 50 }, + { JHB100_PER0RST_MAIN_RSTN_DUALTIMER2, 51 }, + { JHB100_PER0RST_MAIN_RSTN_TRNG, 52 }, + { JHB100_PER0RST_MAIN_RSTN_DMAC0, 53 }, + { JHB100_PER0RST_MAIN_RSTN_DMAC1, 54 }, + { JHB100_PER0RST_MAIN_RSTN_DMAC2, 55 }, + { JHB100_PER0RST_MAIN_RSTN_LTPI0, 56 }, + { JHB100_PER0RST_MAIN_RSTN_LTPI1, 57 }, + { JHB100_PER0RST_MAIN_RSTN_SOL4, 58 }, + { JHB100_PER0RST_MAIN_RSTN_SOL5, 59 }, + { JHB100_PER0RST_MAIN_RSTN_SOL6, 60 }, + { JHB100_PER0RST_MAIN_RSTN_SOL7, 61 }, + { JHB100_PER0RST_MAIN_RSTN_SOL8, 62 }, + { JHB100_PER0RST_MAIN_RSTN_SOL9, 63 }, + { JHB100_PER0RST_MAIN_RSTN_SOL10, 64 }, + { JHB100_PER0RST_MAIN_RSTN_SOL11, 65 }, + { JHB100_PER0RST_MAIN_RSTN_SOL12, 66 }, + { JHB100_PER0RST_MAIN_RSTN_SOL13, 67 }, + { JHB100_PER0RST_MAIN_RSTN_SOL14, 68 }, + { JHB100_PER0RST_MAIN_RSTN_LDO0, 69 }, + { JHB100_PER0RST_MAIN_RSTN_LDO1, 70 }, + { JHB100_PER0RST_MAIN_RSTN_PERIPH0_SENSORS, 71 }, + { JHB100_PER0RST_MAIN_RSTN_DMAC0_SENSORS, 72 }, + { JHB100_PER0RST_SYSCON_PRESETN, 73 }, + { JHB100_PER0RST_GPIO_IOMUX_PRESETN, 74 }, + { JHB100_PER0RST_UART_MUX_REG_WRAP, 75 }, +}; + +static const struct starfive_reset_info jhb100_per0_info = { + .nr_resets = ARRAY_SIZE(jhb100_per0_map), + .assert_offset = 0x554, + .status_offset = 0x560, + .discontiguous = true, + .map = jhb100_per0_map, +}; + +static const struct starfive_reset_map jhb100_per1_map[] = { + { JHB100_PER1RST_IOMUX_PRESETN, 0 }, + { JHB100_PER1RST_SYSCON_PRESETN, 1 }, + { JHB100_PER1RST_MAIN_RSTN_SFC0, 2 }, + { JHB100_PER1RST_MAIN_RSTN_SFC1, 3 }, + { JHB100_PER1RST_MAIN_RSTN_SFC2, 4 }, + { JHB100_PER1RST_MAIN_RSTN_SPI0, 5 }, + { JHB100_PER1RST_MAIN_RSTN_PERIPH1_SENSORS, 6 }, + { JHB100_PER1RST_MAIN_RSTN_SGPIO0, 7 }, + { JHB100_PER1RST_MAIN_RSTN_SGPIO1, 8 }, + { JHB100_PER1RST_MAIN_RSTN_EMMC0, 9 }, + { JHB100_PER1RST_MAIN_RSTN_UFS, 11 }, + { JHB100_PER1RST_MAIN_RSTN_UFS_PHY, 12 }, + { JHB100_PER1RST_MAIN_RSTN_DMAC_SFC0, 13 }, + { JHB100_PER1RST_MAIN_RSTN_DMAC_SFC1, 14 }, + { JHB100_PER1RST_MAIN_RSTN_DMAC_SFC2, 15 }, + { JHB100_PER1RST_MAIN_RSTN_DMAC_SPI0, 16 }, + { JHB100_PER1RST_MAIN_RSTN_PERIPH1_RAS, 17 }, +}; + +static const struct starfive_reset_info jhb100_per1_info = { + .nr_resets = ARRAY_SIZE(jhb100_per1_map), + .assert_offset = 0x134, + .status_offset = 0x138, + .discontiguous = true, + .map = jhb100_per1_map, +}; + +static const struct starfive_reset_map jhb100_per2_map[] = { + { JHB100_PER2RST_IOMUX_PRESETN, 0 }, + { JHB100_PER2RST_POK_IOMUX_PRESETN, 1 }, + { JHB100_PER2RST_SYSREG_RSTN, 2 }, + { JHB100_PER2RST_MAIN_RSTN_CAN0, 3 }, + { JHB100_PER2RST_MAIN_RSTN_CAN1, 4 }, + { JHB100_PER2RST_FAN_TACH_PRESETN, 5 }, + { JHB100_PER2RST_MAIN_RSTN_GMAC2, 7 }, + { JHB100_PER2RST_MAIN_RSTN_GMAC3, 8 }, + { JHB100_PER2RST_MAIN_RSTN_DMAC_8CH, 9 }, + { JHB100_PER2RST_MAIN_RSTN_RTC, 10 }, + { JHB100_PER2RST_ADC0_PRESETN, 11 }, + { JHB100_PER2RST_ADC0_IOMUX_PRESETN, 12 }, + { JHB100_PER2RST_ADC1_PRESETN, 13 }, + { JHB100_PER2RST_ADC1_IOMUX_PRESETN, 14 }, + { JHB100_PER2RST_MAIN_RSTN_PERIPH2_SENSORS, 15 }, +}; + +static const struct starfive_reset_info jhb100_per2_info = { + .nr_resets = ARRAY_SIZE(jhb100_per2_map), + .assert_offset = 0x11c, + .status_offset = 0x120, + .discontiguous = true, + .map = jhb100_per2_map, +}; + +static const struct starfive_reset_info jhb100_per3_info = { + .nr_resets = NUM_RESETS(JHB100_PER3RST_IOMUX_PRESETN), + .assert_offset = 0x98, + .status_offset = 0x9c, + .discontiguous = false, +}; + +static int jhb100_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + const struct starfive_reset_info *info = + (const struct starfive_reset_info *)(id->driver_data); + struct starfive_reset_adev *rdev = to_starfive_reset_adev(adev); + void __iomem *base = rdev->base; + + if (!info || !base) + return -ENODEV; + + return reset_starfive_register_with_info(&adev->dev, adev->dev.parent->of_node, + base + info->assert_offset, + base + info->status_offset, + NULL, info, NULL); +} + +static const struct auxiliary_device_id jhb100_reset_ids[] = { + { + .name = "clk_starfive_common.jhb100-r-sys0", + .driver_data = (kernel_ulong_t)&jhb100_sys0_info, + }, + { + .name = "clk_starfive_common.jhb100-r-sys1", + .driver_data = (kernel_ulong_t)&jhb100_sys1_info, + }, + { + .name = "clk_starfive_common.jhb100-r-sys2", + .driver_data = (kernel_ulong_t)&jhb100_sys2_info, + }, + { + .name = "clk_starfive_common.jhb100-r-per0", + .driver_data = (kernel_ulong_t)&jhb100_per0_info, + }, + { + .name = "clk_starfive_common.jhb100-r-per1", + .driver_data = (kernel_ulong_t)&jhb100_per1_info, + }, + { + .name = "clk_starfive_common.jhb100-r-per2", + .driver_data = (kernel_ulong_t)&jhb100_per2_info, + }, + { + .name = "clk_starfive_common.jhb100-r-per3", + .driver_data = (kernel_ulong_t)&jhb100_per3_info, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(auxiliary, jhb100_reset_ids); + +static struct auxiliary_driver jhb100_reset_driver = { + .probe = jhb100_reset_probe, + .id_table = jhb100_reset_ids, +}; +module_auxiliary_driver(jhb100_reset_driver); + +MODULE_AUTHOR("Changhuang Liang <[email protected]>"); +MODULE_DESCRIPTION("StarFive JHB100 reset driver"); +MODULE_LICENSE("GPL"); -- 2.25.1
