From b25732c22beccb5a2ce3ec4174ea084ba0e176ab Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sun, 7 Aug 2016 08:53:00 +0300 Subject: drivers/sysreset: group sysreset drivers Create drivers/sysreset and move sysreset-uclass and all sysreset drivers there. Signed-off-by: Max Filippov Acked-by: Simon Glass --- drivers/sysreset/Kconfig | 16 ++++++ drivers/sysreset/Makefile | 15 +++++ drivers/sysreset/sysreset-uclass.c | 81 ++++++++++++++++++++++++++ drivers/sysreset/sysreset_rk3036.c | 45 +++++++++++++++ drivers/sysreset/sysreset_rk3288.c | 47 +++++++++++++++ drivers/sysreset/sysreset_rk3399.c | 45 +++++++++++++++ drivers/sysreset/sysreset_sandbox.c | 101 +++++++++++++++++++++++++++++++++ drivers/sysreset/sysreset_snapdragon.c | 40 +++++++++++++ 8 files changed, 390 insertions(+) create mode 100644 drivers/sysreset/Kconfig create mode 100644 drivers/sysreset/Makefile create mode 100644 drivers/sysreset/sysreset-uclass.c create mode 100644 drivers/sysreset/sysreset_rk3036.c create mode 100644 drivers/sysreset/sysreset_rk3288.c create mode 100644 drivers/sysreset/sysreset_rk3399.c create mode 100644 drivers/sysreset/sysreset_sandbox.c create mode 100644 drivers/sysreset/sysreset_snapdragon.c (limited to 'drivers/sysreset') diff --git a/drivers/sysreset/Kconfig b/drivers/sysreset/Kconfig new file mode 100644 index 0000000..05a37b9 --- /dev/null +++ b/drivers/sysreset/Kconfig @@ -0,0 +1,16 @@ +# +# System reset devices +# + +menu "System reset device drivers" + +config SYSRESET + bool "Enable support for system reset drivers" + depends on DM + help + Enable system reset drivers which can be used to reset the CPU or + board. Each driver can provide a reset method which will be called + to effect a reset. The uclass will try all available drivers when + reset_walk() is called. + +endmenu diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile new file mode 100644 index 0000000..7db1b69 --- /dev/null +++ b/drivers/sysreset/Makefile @@ -0,0 +1,15 @@ +# +# (C) Copyright 2016 Cadence Design Systems Inc. +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_SYSRESET) += sysreset-uclass.o + +ifndef CONFIG_SPL_BUILD +obj-$(CONFIG_ROCKCHIP_RK3036) += sysreset_rk3036.o +endif +obj-$(CONFIG_ROCKCHIP_RK3288) += sysreset_rk3288.o +obj-$(CONFIG_ROCKCHIP_RK3399) += sysreset_rk3399.o +obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o +obj-$(CONFIG_ARCH_SNAPDRAGON) += sysreset_snapdragon.o diff --git a/drivers/sysreset/sysreset-uclass.c b/drivers/sysreset/sysreset-uclass.c new file mode 100644 index 0000000..3566d17 --- /dev/null +++ b/drivers/sysreset/sysreset-uclass.c @@ -0,0 +1,81 @@ +/* + * Copyright (C) 2015 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct sysreset_ops *ops = sysreset_get_ops(dev); + + if (!ops->request) + return -ENOSYS; + + return ops->request(dev, type); +} + +int sysreset_walk(enum sysreset_t type) +{ + struct udevice *dev; + int ret = -ENOSYS; + + while (ret != -EINPROGRESS && type < SYSRESET_COUNT) { + for (uclass_first_device(UCLASS_SYSRESET, &dev); + dev; + uclass_next_device(&dev)) { + ret = sysreset_request(dev, type); + if (ret == -EINPROGRESS) + break; + } + type++; + } + + return ret; +} + +void sysreset_walk_halt(enum sysreset_t type) +{ + int ret; + + ret = sysreset_walk(type); + + /* Wait for the reset to take effect */ + if (ret == -EINPROGRESS) + mdelay(100); + + /* Still no reset? Give up */ + debug("System reset not supported on this platform\n"); + hang(); +} + +/** + * reset_cpu() - calls sysreset_walk(SYSRESET_WARM) + */ +void reset_cpu(ulong addr) +{ + sysreset_walk_halt(SYSRESET_WARM); +} + + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + sysreset_walk_halt(SYSRESET_WARM); + + return 0; +} + +UCLASS_DRIVER(sysreset) = { + .id = UCLASS_SYSRESET, + .name = "sysreset", +}; diff --git a/drivers/sysreset/sysreset_rk3036.c b/drivers/sysreset/sysreset_rk3036.c new file mode 100644 index 0000000..b3d2113 --- /dev/null +++ b/drivers/sysreset/sysreset_rk3036.c @@ -0,0 +1,45 @@ +/* + * (C) Copyright 2015 Rockchip Electronics Co., Ltd + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int rk3036_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct rk3036_cru *cru = rockchip_get_cru(); + + if (IS_ERR(cru)) + return PTR_ERR(cru); + switch (type) { + case SYSRESET_WARM: + writel(0xeca8, &cru->cru_glb_srst_snd_value); + break; + case SYSRESET_COLD: + writel(0xfdb9, &cru->cru_glb_srst_fst_value); + break; + default: + return -EPROTONOSUPPORT; + } + + return -EINPROGRESS; +} + +static struct sysreset_ops rk3036_sysreset = { + .request = rk3036_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_rk3036) = { + .name = "rk3036_sysreset", + .id = UCLASS_SYSRESET, + .ops = &rk3036_sysreset, +}; diff --git a/drivers/sysreset/sysreset_rk3288.c b/drivers/sysreset/sysreset_rk3288.c new file mode 100644 index 0000000..0aad1c2 --- /dev/null +++ b/drivers/sysreset/sysreset_rk3288.c @@ -0,0 +1,47 @@ +/* + * (C) Copyright 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int rk3288_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct rk3288_cru *cru = rockchip_get_cru(); + + if (IS_ERR(cru)) + return PTR_ERR(cru); + switch (type) { + case SYSRESET_WARM: + rk_clrreg(&cru->cru_mode_con, 0xffff); + writel(0xeca8, &cru->cru_glb_srst_snd_value); + break; + case SYSRESET_COLD: + rk_clrreg(&cru->cru_mode_con, 0xffff); + writel(0xfdb9, &cru->cru_glb_srst_fst_value); + break; + default: + return -EPROTONOSUPPORT; + } + + return -EINPROGRESS; +} + +static struct sysreset_ops rk3288_sysreset = { + .request = rk3288_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_rk3288) = { + .name = "rk3288_sysreset", + .id = UCLASS_SYSRESET, + .ops = &rk3288_sysreset, +}; diff --git a/drivers/sysreset/sysreset_rk3399.c b/drivers/sysreset/sysreset_rk3399.c new file mode 100644 index 0000000..9a55546 --- /dev/null +++ b/drivers/sysreset/sysreset_rk3399.c @@ -0,0 +1,45 @@ +/* + * (C) Copyright 2016 Rockchip Electronics Co., Ltd + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +int rk3399_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct rk3399_cru *cru = rockchip_get_cru(); + + if (IS_ERR(cru)) + return PTR_ERR(cru); + switch (type) { + case SYSRESET_WARM: + writel(0xeca8, &cru->glb_srst_snd_value); + break; + case SYSRESET_COLD: + writel(0xfdb9, &cru->glb_srst_fst_value); + break; + default: + return -EPROTONOSUPPORT; + } + + return -EINPROGRESS; +} + +static struct sysreset_ops rk3399_sysreset = { + .request = rk3399_sysreset_request, +}; + +U_BOOT_DRIVER(sysreset_rk3399) = { + .name = "rk3399_sysreset", + .id = UCLASS_SYSRESET, + .ops = &rk3399_sysreset, +}; diff --git a/drivers/sysreset/sysreset_sandbox.c b/drivers/sysreset/sysreset_sandbox.c new file mode 100644 index 0000000..7ae7f38 --- /dev/null +++ b/drivers/sysreset/sysreset_sandbox.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +static int sandbox_warm_sysreset_request(struct udevice *dev, + enum sysreset_t type) +{ + struct sandbox_state *state = state_get_current(); + + switch (type) { + case SYSRESET_WARM: + state->last_sysreset = type; + break; + default: + return -ENOSYS; + } + if (!state->sysreset_allowed[type]) + return -EACCES; + + return -EINPROGRESS; +} + +static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + struct sandbox_state *state = state_get_current(); + + /* + * If we have a device tree, the device we created from platform data + * (see the U_BOOT_DEVICE() declaration below) should not do anything. + * If we are that device, return an error. + */ + if (state->fdt_fname && dev->of_offset == -1) + return -ENODEV; + + switch (type) { + case SYSRESET_COLD: + state->last_sysreset = type; + break; + case SYSRESET_POWER: + state->last_sysreset = type; + if (!state->sysreset_allowed[type]) + return -EACCES; + sandbox_exit(); + break; + default: + return -ENOSYS; + } + if (!state->sysreset_allowed[type]) + return -EACCES; + + return -EINPROGRESS; +} + +static struct sysreset_ops sandbox_sysreset_ops = { + .request = sandbox_sysreset_request, +}; + +static const struct udevice_id sandbox_sysreset_ids[] = { + { .compatible = "sandbox,reset" }, + { } +}; + +U_BOOT_DRIVER(sysreset_sandbox) = { + .name = "sysreset_sandbox", + .id = UCLASS_SYSRESET, + .of_match = sandbox_sysreset_ids, + .ops = &sandbox_sysreset_ops, +}; + +static struct sysreset_ops sandbox_warm_sysreset_ops = { + .request = sandbox_warm_sysreset_request, +}; + +static const struct udevice_id sandbox_warm_sysreset_ids[] = { + { .compatible = "sandbox,warm-reset" }, + { } +}; + +U_BOOT_DRIVER(warm_sysreset_sandbox) = { + .name = "warm_sysreset_sandbox", + .id = UCLASS_SYSRESET, + .of_match = sandbox_warm_sysreset_ids, + .ops = &sandbox_warm_sysreset_ops, +}; + +/* This is here in case we don't have a device tree */ +U_BOOT_DEVICE(sysreset_sandbox_non_fdt) = { + .name = "sysreset_sandbox", +}; diff --git a/drivers/sysreset/sysreset_snapdragon.c b/drivers/sysreset/sysreset_snapdragon.c new file mode 100644 index 0000000..a6cabfb --- /dev/null +++ b/drivers/sysreset/sysreset_snapdragon.c @@ -0,0 +1,40 @@ +/* + * Qualcomm APQ8016 reset controller driver + * + * (C) Copyright 2015 Mateusz Kulikowski + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +static int msm_sysreset_request(struct udevice *dev, enum sysreset_t type) +{ + phys_addr_t addr = dev_get_addr(dev); + if (!addr) + return -EINVAL; + writel(0, addr); + return -EINPROGRESS; +} + +static struct sysreset_ops msm_sysreset_ops = { + .request = msm_sysreset_request, +}; + +static const struct udevice_id msm_sysreset_ids[] = { + { .compatible = "qcom,pshold" }, + { } +}; + +U_BOOT_DRIVER(msm_reset) = { + .name = "msm_sysreset", + .id = UCLASS_SYSRESET, + .of_match = msm_sysreset_ids, + .ops = &msm_sysreset_ops, +}; -- cgit v1.1