diff options
author | Ulf Hansson <ulf.hansson@linaro.org> | 2023-07-05 01:36:24 +0300 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2023-07-11 16:30:09 +0300 |
commit | aded002384c13a473af7d519e38ff59bf6056289 (patch) | |
tree | 83af7b64abbd0b191450b7a0e6dce064219dff07 /drivers/soc/bcm | |
parent | 869b9dd3339a719d41c10870f9aaec39953edd86 (diff) | |
download | linux-aded002384c13a473af7d519e38ff59bf6056289.tar.xz |
soc: bcm: Move power-domain drivers to the genpd dir
To simplify with maintenance let's move the bcm power-domain drivers to the
new genpd directory. Going forward, patches are intended to be managed
through a separate git tree, according to MAINTAINERS.
While moving the drivers, we end up with a directory for bcm63xx that only
contains a Kconfig file, which seems a bit silly. Let's therefore also move
the Kconfig options into the Kconfig file a directory above, as it allows
us to drop the directory too.
Cc: Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: <linux-mips@vger.kernel.org>
Cc: <linux-rpi-kernel@lists.infradead.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/soc/bcm')
-rw-r--r-- | drivers/soc/bcm/Kconfig | 22 | ||||
-rw-r--r-- | drivers/soc/bcm/Makefile | 3 | ||||
-rw-r--r-- | drivers/soc/bcm/bcm2835-power.c | 713 | ||||
-rw-r--r-- | drivers/soc/bcm/bcm63xx/Kconfig | 21 | ||||
-rw-r--r-- | drivers/soc/bcm/bcm63xx/Makefile | 3 | ||||
-rw-r--r-- | drivers/soc/bcm/bcm63xx/bcm-pmb.c | 364 | ||||
-rw-r--r-- | drivers/soc/bcm/bcm63xx/bcm63xx-power.c | 376 | ||||
-rw-r--r-- | drivers/soc/bcm/raspberrypi-power.c | 245 |
8 files changed, 21 insertions, 1726 deletions
diff --git a/drivers/soc/bcm/Kconfig b/drivers/soc/bcm/Kconfig index 24f92a6e882a..f96906795fa6 100644 --- a/drivers/soc/bcm/Kconfig +++ b/drivers/soc/bcm/Kconfig @@ -42,7 +42,27 @@ config SOC_BRCMSTB If unsure, say N. -source "drivers/soc/bcm/bcm63xx/Kconfig" +config BCM_PMB + bool "Broadcom PMB (Power Management Bus) driver" + depends on ARCH_BCMBCA || (COMPILE_TEST && OF) + default ARCH_BCMBCA + select PM_GENERIC_DOMAINS if PM + help + This enables support for the Broadcom's PMB (Power Management Bus) that + is used for disabling and enabling SoC devices. + +if SOC_BCM63XX + +config BCM63XX_POWER + bool "BCM63xx power domain driver" + depends on BMIPS_GENERIC || (COMPILE_TEST && OF) + select PM_GENERIC_DOMAINS if PM + help + This enables support for the BCM63xx power domains controller on + BCM6318, BCM6328, BCM6362 and BCM63268 SoCs. + +endif # SOC_BCM63XX + source "drivers/soc/bcm/brcmstb/Kconfig" endmenu diff --git a/drivers/soc/bcm/Makefile b/drivers/soc/bcm/Makefile index 0f0efa28d92b..32424b1032c7 100644 --- a/drivers/soc/bcm/Makefile +++ b/drivers/soc/bcm/Makefile @@ -1,5 +1,2 @@ # SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_BCM2835_POWER) += bcm2835-power.o -obj-$(CONFIG_RASPBERRYPI_POWER) += raspberrypi-power.o -obj-y += bcm63xx/ obj-$(CONFIG_SOC_BRCMSTB) += brcmstb/ diff --git a/drivers/soc/bcm/bcm2835-power.c b/drivers/soc/bcm/bcm2835-power.c deleted file mode 100644 index 1a179d4e011c..000000000000 --- a/drivers/soc/bcm/bcm2835-power.c +++ /dev/null @@ -1,713 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Power domain driver for Broadcom BCM2835 - * - * Copyright (C) 2018 Broadcom - */ - -#include <dt-bindings/soc/bcm2835-pm.h> -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/io.h> -#include <linux/mfd/bcm2835-pm.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <linux/reset-controller.h> -#include <linux/types.h> - -#define PM_GNRIC 0x00 -#define PM_AUDIO 0x04 -#define PM_STATUS 0x18 -#define PM_RSTC 0x1c -#define PM_RSTS 0x20 -#define PM_WDOG 0x24 -#define PM_PADS0 0x28 -#define PM_PADS2 0x2c -#define PM_PADS3 0x30 -#define PM_PADS4 0x34 -#define PM_PADS5 0x38 -#define PM_PADS6 0x3c -#define PM_CAM0 0x44 -#define PM_CAM0_LDOHPEN BIT(2) -#define PM_CAM0_LDOLPEN BIT(1) -#define PM_CAM0_CTRLEN BIT(0) - -#define PM_CAM1 0x48 -#define PM_CAM1_LDOHPEN BIT(2) -#define PM_CAM1_LDOLPEN BIT(1) -#define PM_CAM1_CTRLEN BIT(0) - -#define PM_CCP2TX 0x4c -#define PM_CCP2TX_LDOEN BIT(1) -#define PM_CCP2TX_CTRLEN BIT(0) - -#define PM_DSI0 0x50 -#define PM_DSI0_LDOHPEN BIT(2) -#define PM_DSI0_LDOLPEN BIT(1) -#define PM_DSI0_CTRLEN BIT(0) - -#define PM_DSI1 0x54 -#define PM_DSI1_LDOHPEN BIT(2) -#define PM_DSI1_LDOLPEN BIT(1) -#define PM_DSI1_CTRLEN BIT(0) - -#define PM_HDMI 0x58 -#define PM_HDMI_RSTDR BIT(19) -#define PM_HDMI_LDOPD BIT(1) -#define PM_HDMI_CTRLEN BIT(0) - -#define PM_USB 0x5c -/* The power gates must be enabled with this bit before enabling the LDO in the - * USB block. - */ -#define PM_USB_CTRLEN BIT(0) - -#define PM_PXLDO 0x60 -#define PM_PXBG 0x64 -#define PM_DFT 0x68 -#define PM_SMPS 0x6c -#define PM_XOSC 0x70 -#define PM_SPAREW 0x74 -#define PM_SPARER 0x78 -#define PM_AVS_RSTDR 0x7c -#define PM_AVS_STAT 0x80 -#define PM_AVS_EVENT 0x84 -#define PM_AVS_INTEN 0x88 -#define PM_DUMMY 0xfc - -#define PM_IMAGE 0x108 -#define PM_GRAFX 0x10c -#define PM_PROC 0x110 -#define PM_ENAB BIT(12) -#define PM_ISPRSTN BIT(8) -#define PM_H264RSTN BIT(7) -#define PM_PERIRSTN BIT(6) -#define PM_V3DRSTN BIT(6) -#define PM_ISFUNC BIT(5) -#define PM_MRDONE BIT(4) -#define PM_MEMREP BIT(3) -#define PM_ISPOW BIT(2) -#define PM_POWOK BIT(1) -#define PM_POWUP BIT(0) -#define PM_INRUSH_SHIFT 13 -#define PM_INRUSH_3_5_MA 0 -#define PM_INRUSH_5_MA 1 -#define PM_INRUSH_10_MA 2 -#define PM_INRUSH_20_MA 3 -#define PM_INRUSH_MASK (3 << PM_INRUSH_SHIFT) - -#define PM_PASSWORD 0x5a000000 - -#define PM_WDOG_TIME_SET 0x000fffff -#define PM_RSTC_WRCFG_CLR 0xffffffcf -#define PM_RSTS_HADWRH_SET 0x00000040 -#define PM_RSTC_WRCFG_SET 0x00000030 -#define PM_RSTC_WRCFG_FULL_RESET 0x00000020 -#define PM_RSTC_RESET 0x00000102 - -#define PM_READ(reg) readl(power->base + (reg)) -#define PM_WRITE(reg, val) writel(PM_PASSWORD | (val), power->base + (reg)) - -#define ASB_BRDG_VERSION 0x00 -#define ASB_CPR_CTRL 0x04 - -#define ASB_V3D_S_CTRL 0x08 -#define ASB_V3D_M_CTRL 0x0c -#define ASB_ISP_S_CTRL 0x10 -#define ASB_ISP_M_CTRL 0x14 -#define ASB_H264_S_CTRL 0x18 -#define ASB_H264_M_CTRL 0x1c - -#define ASB_REQ_STOP BIT(0) -#define ASB_ACK BIT(1) -#define ASB_EMPTY BIT(2) -#define ASB_FULL BIT(3) - -#define ASB_AXI_BRDG_ID 0x20 - -#define BCM2835_BRDG_ID 0x62726467 - -struct bcm2835_power_domain { - struct generic_pm_domain base; - struct bcm2835_power *power; - u32 domain; - struct clk *clk; -}; - -struct bcm2835_power { - struct device *dev; - /* PM registers. */ - void __iomem *base; - /* AXI Async bridge registers. */ - void __iomem *asb; - /* RPiVid bridge registers. */ - void __iomem *rpivid_asb; - - struct genpd_onecell_data pd_xlate; - struct bcm2835_power_domain domains[BCM2835_POWER_DOMAIN_COUNT]; - struct reset_controller_dev reset; -}; - -static int bcm2835_asb_control(struct bcm2835_power *power, u32 reg, bool enable) -{ - void __iomem *base = power->asb; - u64 start; - u32 val; - - switch (reg) { - case 0: - return 0; - case ASB_V3D_S_CTRL: - case ASB_V3D_M_CTRL: - if (power->rpivid_asb) - base = power->rpivid_asb; - break; - } - - start = ktime_get_ns(); - - /* Enable the module's async AXI bridges. */ - if (enable) { - val = readl(base + reg) & ~ASB_REQ_STOP; - } else { - val = readl(base + reg) | ASB_REQ_STOP; - } - writel(PM_PASSWORD | val, base + reg); - - while (readl(base + reg) & ASB_ACK) { - cpu_relax(); - if (ktime_get_ns() - start >= 1000) - return -ETIMEDOUT; - } - - return 0; -} - -static int bcm2835_asb_enable(struct bcm2835_power *power, u32 reg) -{ - return bcm2835_asb_control(power, reg, true); -} - -static int bcm2835_asb_disable(struct bcm2835_power *power, u32 reg) -{ - return bcm2835_asb_control(power, reg, false); -} - -static int bcm2835_power_power_off(struct bcm2835_power_domain *pd, u32 pm_reg) -{ - struct bcm2835_power *power = pd->power; - - /* We don't run this on BCM2711 */ - if (power->rpivid_asb) - return 0; - - /* Enable functional isolation */ - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISFUNC); - - /* Enable electrical isolation */ - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISPOW); - - /* Open the power switches. */ - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_POWUP); - - return 0; -} - -static int bcm2835_power_power_on(struct bcm2835_power_domain *pd, u32 pm_reg) -{ - struct bcm2835_power *power = pd->power; - struct device *dev = power->dev; - u64 start; - int ret; - int inrush; - bool powok; - - /* We don't run this on BCM2711 */ - if (power->rpivid_asb) - return 0; - - /* If it was already powered on by the fw, leave it that way. */ - if (PM_READ(pm_reg) & PM_POWUP) - return 0; - - /* Enable power. Allowing too much current at once may result - * in POWOK never getting set, so start low and ramp it up as - * necessary to succeed. - */ - powok = false; - for (inrush = PM_INRUSH_3_5_MA; inrush <= PM_INRUSH_20_MA; inrush++) { - PM_WRITE(pm_reg, - (PM_READ(pm_reg) & ~PM_INRUSH_MASK) | - (inrush << PM_INRUSH_SHIFT) | - PM_POWUP); - - start = ktime_get_ns(); - while (!(powok = !!(PM_READ(pm_reg) & PM_POWOK))) { - cpu_relax(); - if (ktime_get_ns() - start >= 3000) - break; - } - } - if (!powok) { - dev_err(dev, "Timeout waiting for %s power OK\n", - pd->base.name); - ret = -ETIMEDOUT; - goto err_disable_powup; - } - - /* Disable electrical isolation */ - PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_ISPOW); - - /* Repair memory */ - PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_MEMREP); - start = ktime_get_ns(); - while (!(PM_READ(pm_reg) & PM_MRDONE)) { - cpu_relax(); - if (ktime_get_ns() - start >= 1000) { - dev_err(dev, "Timeout waiting for %s memory repair\n", - pd->base.name); - ret = -ETIMEDOUT; - goto err_disable_ispow; - } - } - - /* Disable functional isolation */ - PM_WRITE(pm_reg, PM_READ(pm_reg) | PM_ISFUNC); - - return 0; - -err_disable_ispow: - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~PM_ISPOW); -err_disable_powup: - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~(PM_POWUP | PM_INRUSH_MASK)); - return ret; -} - -static int bcm2835_asb_power_on(struct bcm2835_power_domain *pd, - u32 pm_reg, - u32 asb_m_reg, - u32 asb_s_reg, - u32 reset_flags) -{ - struct bcm2835_power *power = pd->power; - int ret; - - ret = clk_prepare_enable(pd->clk); - if (ret) { - dev_err(power->dev, "Failed to enable clock for %s\n", - pd->base.name); - return ret; - } - - /* Wait 32 clocks for reset to propagate, 1 us will be enough */ - udelay(1); - - clk_disable_unprepare(pd->clk); - - /* Deassert the resets. */ - PM_WRITE(pm_reg, PM_READ(pm_reg) | reset_flags); - - ret = clk_prepare_enable(pd->clk); - if (ret) { - dev_err(power->dev, "Failed to enable clock for %s\n", - pd->base.name); - goto err_enable_resets; - } - - ret = bcm2835_asb_enable(power, asb_m_reg); - if (ret) { - dev_err(power->dev, "Failed to enable ASB master for %s\n", - pd->base.name); - goto err_disable_clk; - } - ret = bcm2835_asb_enable(power, asb_s_reg); - if (ret) { - dev_err(power->dev, "Failed to enable ASB slave for %s\n", - pd->base.name); - goto err_disable_asb_master; - } - - return 0; - -err_disable_asb_master: - bcm2835_asb_disable(power, asb_m_reg); -err_disable_clk: - clk_disable_unprepare(pd->clk); -err_enable_resets: - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~reset_flags); - return ret; -} - -static int bcm2835_asb_power_off(struct bcm2835_power_domain *pd, - u32 pm_reg, - u32 asb_m_reg, - u32 asb_s_reg, - u32 reset_flags) -{ - struct bcm2835_power *power = pd->power; - int ret; - - ret = bcm2835_asb_disable(power, asb_s_reg); - if (ret) { - dev_warn(power->dev, "Failed to disable ASB slave for %s\n", - pd->base.name); - return ret; - } - ret = bcm2835_asb_disable(power, asb_m_reg); - if (ret) { - dev_warn(power->dev, "Failed to disable ASB master for %s\n", - pd->base.name); - bcm2835_asb_enable(power, asb_s_reg); - return ret; - } - - clk_disable_unprepare(pd->clk); - - /* Assert the resets. */ - PM_WRITE(pm_reg, PM_READ(pm_reg) & ~reset_flags); - - return 0; -} - -static int bcm2835_power_pd_power_on(struct generic_pm_domain *domain) -{ - struct bcm2835_power_domain *pd = - container_of(domain, struct bcm2835_power_domain, base); - struct bcm2835_power *power = pd->power; - - switch (pd->domain) { - case BCM2835_POWER_DOMAIN_GRAFX: - return bcm2835_power_power_on(pd, PM_GRAFX); - - case BCM2835_POWER_DOMAIN_GRAFX_V3D: - return bcm2835_asb_power_on(pd, PM_GRAFX, - ASB_V3D_M_CTRL, ASB_V3D_S_CTRL, - PM_V3DRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE: - return bcm2835_power_power_on(pd, PM_IMAGE); - - case BCM2835_POWER_DOMAIN_IMAGE_PERI: - return bcm2835_asb_power_on(pd, PM_IMAGE, - 0, 0, - PM_PERIRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE_ISP: - return bcm2835_asb_power_on(pd, PM_IMAGE, - ASB_ISP_M_CTRL, ASB_ISP_S_CTRL, - PM_ISPRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE_H264: - return bcm2835_asb_power_on(pd, PM_IMAGE, - ASB_H264_M_CTRL, ASB_H264_S_CTRL, - PM_H264RSTN); - - case BCM2835_POWER_DOMAIN_USB: - PM_WRITE(PM_USB, PM_USB_CTRLEN); - return 0; - - case BCM2835_POWER_DOMAIN_DSI0: - PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN); - PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN | PM_DSI0_LDOHPEN); - return 0; - - case BCM2835_POWER_DOMAIN_DSI1: - PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN); - PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN | PM_DSI1_LDOHPEN); - return 0; - - case BCM2835_POWER_DOMAIN_CCP2TX: - PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN); - PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN | PM_CCP2TX_LDOEN); - return 0; - - case BCM2835_POWER_DOMAIN_HDMI: - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_RSTDR); - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_CTRLEN); - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_LDOPD); - usleep_range(100, 200); - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_RSTDR); - return 0; - - default: - dev_err(power->dev, "Invalid domain %d\n", pd->domain); - return -EINVAL; - } -} - -static int bcm2835_power_pd_power_off(struct generic_pm_domain *domain) -{ - struct bcm2835_power_domain *pd = - container_of(domain, struct bcm2835_power_domain, base); - struct bcm2835_power *power = pd->power; - - switch (pd->domain) { - case BCM2835_POWER_DOMAIN_GRAFX: - return bcm2835_power_power_off(pd, PM_GRAFX); - - case BCM2835_POWER_DOMAIN_GRAFX_V3D: - return bcm2835_asb_power_off(pd, PM_GRAFX, - ASB_V3D_M_CTRL, ASB_V3D_S_CTRL, - PM_V3DRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE: - return bcm2835_power_power_off(pd, PM_IMAGE); - - case BCM2835_POWER_DOMAIN_IMAGE_PERI: - return bcm2835_asb_power_off(pd, PM_IMAGE, - 0, 0, - PM_PERIRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE_ISP: - return bcm2835_asb_power_off(pd, PM_IMAGE, - ASB_ISP_M_CTRL, ASB_ISP_S_CTRL, - PM_ISPRSTN); - - case BCM2835_POWER_DOMAIN_IMAGE_H264: - return bcm2835_asb_power_off(pd, PM_IMAGE, - ASB_H264_M_CTRL, ASB_H264_S_CTRL, - PM_H264RSTN); - - case BCM2835_POWER_DOMAIN_USB: - PM_WRITE(PM_USB, 0); - return 0; - - case BCM2835_POWER_DOMAIN_DSI0: - PM_WRITE(PM_DSI0, PM_DSI0_CTRLEN); - PM_WRITE(PM_DSI0, 0); - return 0; - - case BCM2835_POWER_DOMAIN_DSI1: - PM_WRITE(PM_DSI1, PM_DSI1_CTRLEN); - PM_WRITE(PM_DSI1, 0); - return 0; - - case BCM2835_POWER_DOMAIN_CCP2TX: - PM_WRITE(PM_CCP2TX, PM_CCP2TX_CTRLEN); - PM_WRITE(PM_CCP2TX, 0); - return 0; - - case BCM2835_POWER_DOMAIN_HDMI: - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) | PM_HDMI_LDOPD); - PM_WRITE(PM_HDMI, PM_READ(PM_HDMI) & ~PM_HDMI_CTRLEN); - return 0; - - default: - dev_err(power->dev, "Invalid domain %d\n", pd->domain); - return -EINVAL; - } -} - -static int -bcm2835_init_power_domain(struct bcm2835_power *power, - int pd_xlate_index, const char *name) -{ - struct device *dev = power->dev; - struct bcm2835_power_domain *dom = &power->domains[pd_xlate_index]; - - dom->clk = devm_clk_get(dev->parent, name); - if (IS_ERR(dom->clk)) { - int ret = PTR_ERR(dom->clk); - - if (ret == -EPROBE_DEFER) - return ret; - - /* Some domains don't have a clk, so make sure that we - * don't deref an error pointer later. - */ - dom->clk = NULL; - } - - dom->base.name = name; - dom->base.power_on = bcm2835_power_pd_power_on; - dom->base.power_off = bcm2835_power_pd_power_off; - - dom->domain = pd_xlate_index; - dom->power = power; - - /* XXX: on/off at boot? */ - pm_genpd_init(&dom->base, NULL, true); - - power->pd_xlate.domains[pd_xlate_index] = &dom->base; - - return 0; -} - -/** bcm2835_reset_reset - Resets a block that has a reset line in the - * PM block. - * - * The consumer of the reset controller must have the power domain up - * -- there's no reset ability with the power domain down. To reset - * the sub-block, we just disable its access to memory through the - * ASB, reset, and re-enable. - */ -static int bcm2835_reset_reset(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct bcm2835_power *power = container_of(rcdev, struct bcm2835_power, - reset); - struct bcm2835_power_domain *pd; - int ret; - - switch (id) { - case BCM2835_RESET_V3D: - pd = &power->domains[BCM2835_POWER_DOMAIN_GRAFX_V3D]; - break; - case BCM2835_RESET_H264: - pd = &power->domains[BCM2835_POWER_DOMAIN_IMAGE_H264]; - break; - case BCM2835_RESET_ISP: - pd = &power->domains[BCM2835_POWER_DOMAIN_IMAGE_ISP]; - break; - default: - dev_err(power->dev, "Bad reset id %ld\n", id); - return -EINVAL; - } - - ret = bcm2835_power_pd_power_off(&pd->base); - if (ret) - return ret; - - return bcm2835_power_pd_power_on(&pd->base); -} - -static int bcm2835_reset_status(struct reset_controller_dev *rcdev, - unsigned long id) -{ - struct bcm2835_power *power = container_of(rcdev, struct bcm2835_power, - reset); - - switch (id) { - case BCM2835_RESET_V3D: - return !PM_READ(PM_GRAFX & PM_V3DRSTN); - case BCM2835_RESET_H264: - return !PM_READ(PM_IMAGE & PM_H264RSTN); - case BCM2835_RESET_ISP: - return !PM_READ(PM_IMAGE & PM_ISPRSTN); - default: - return -EINVAL; - } -} - -static const struct reset_control_ops bcm2835_reset_ops = { - .reset = bcm2835_reset_reset, - .status = bcm2835_reset_status, -}; - -static const char *const power_domain_names[] = { - [BCM2835_POWER_DOMAIN_GRAFX] = "grafx", - [BCM2835_POWER_DOMAIN_GRAFX_V3D] = "v3d", - - [BCM2835_POWER_DOMAIN_IMAGE] = "image", - [BCM2835_POWER_DOMAIN_IMAGE_PERI] = "peri_image", - [BCM2835_POWER_DOMAIN_IMAGE_H264] = "h264", - [BCM2835_POWER_DOMAIN_IMAGE_ISP] = "isp", - - [BCM2835_POWER_DOMAIN_USB] = "usb", - [BCM2835_POWER_DOMAIN_DSI0] = "dsi0", - [BCM2835_POWER_DOMAIN_DSI1] = "dsi1", - [BCM2835_POWER_DOMAIN_CAM0] = "cam0", - [BCM2835_POWER_DOMAIN_CAM1] = "cam1", - [BCM2835_POWER_DOMAIN_CCP2TX] = "ccp2tx", - [BCM2835_POWER_DOMAIN_HDMI] = "hdmi", -}; - -static int bcm2835_power_probe(struct platform_device *pdev) -{ - struct bcm2835_pm *pm = dev_get_drvdata(pdev->dev.parent); - struct device *dev = &pdev->dev; - struct bcm2835_power *power; - static const struct { - int parent, child; - } domain_deps[] = { - { BCM2835_POWER_DOMAIN_GRAFX, BCM2835_POWER_DOMAIN_GRAFX_V3D }, - { BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_PERI }, - { BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_H264 }, - { BCM2835_POWER_DOMAIN_IMAGE, BCM2835_POWER_DOMAIN_IMAGE_ISP }, - { BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_USB }, - { BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM0 }, - { BCM2835_POWER_DOMAIN_IMAGE_PERI, BCM2835_POWER_DOMAIN_CAM1 }, - }; - int ret = 0, i; - u32 id; - - power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL); - if (!power) - return -ENOMEM; - platform_set_drvdata(pdev, power); - - power->dev = dev; - power->base = pm->base; - power->asb = pm->asb; - power->rpivid_asb = pm->rpivid_asb; - - id = readl(power->asb + ASB_AXI_BRDG_ID); - if (id != BCM2835_BRDG_ID /* "BRDG" */) { - dev_err(dev, "ASB register ID returned 0x%08x\n", id); - return -ENODEV; - } - - if (power->rpivid_asb) { - id = readl(power->rpivid_asb + ASB_AXI_BRDG_ID); - if (id != BCM2835_BRDG_ID /* "BRDG" */) { - dev_err(dev, "RPiVid ASB register ID returned 0x%08x\n", - id); - return -ENODEV; - } - } - - power->pd_xlate.domains = devm_kcalloc(dev, - ARRAY_SIZE(power_domain_names), - sizeof(*power->pd_xlate.domains), - GFP_KERNEL); - if (!power->pd_xlate.domains) - return -ENOMEM; - - power->pd_xlate.num_domains = ARRAY_SIZE(power_domain_names); - - for (i = 0; i < ARRAY_SIZE(power_domain_names); i++) { - ret = bcm2835_init_power_domain(power, i, power_domain_names[i]); - if (ret) - goto fail; - } - - for (i = 0; i < ARRAY_SIZE(domain_deps); i++) { - pm_genpd_add_subdomain(&power->domains[domain_deps[i].parent].base, - &power->domains[domain_deps[i].child].base); - } - - power->reset.owner = THIS_MODULE; - power->reset.nr_resets = BCM2835_RESET_COUNT; - power->reset.ops = &bcm2835_reset_ops; - power->reset.of_node = dev->parent->of_node; - - ret = devm_reset_controller_register(dev, &power->reset); - if (ret) - goto fail; - - of_genpd_add_provider_onecell(dev->parent->of_node, &power->pd_xlate); - - dev_info(dev, "Broadcom BCM2835 power domains driver"); - return 0; - -fail: - for (i = 0; i < ARRAY_SIZE(power_domain_names); i++) { - struct generic_pm_domain *dom = &power->domains[i].base; - - if (dom->name) - pm_genpd_remove(dom); - } - return ret; -} - -static struct platform_driver bcm2835_power_driver = { - .probe = bcm2835_power_probe, - .driver = { - .name = "bcm2835-power", - }, -}; -module_platform_driver(bcm2835_power_driver); - -MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); -MODULE_DESCRIPTION("Driver for Broadcom BCM2835 PM power domains and reset"); diff --git a/drivers/soc/bcm/bcm63xx/Kconfig b/drivers/soc/bcm/bcm63xx/Kconfig deleted file mode 100644 index 355c34482076..000000000000 --- a/drivers/soc/bcm/bcm63xx/Kconfig +++ /dev/null @@ -1,21 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -if SOC_BCM63XX - -config BCM63XX_POWER - bool "BCM63xx power domain driver" - depends on BMIPS_GENERIC || (COMPILE_TEST && OF) - select PM_GENERIC_DOMAINS if PM - help - This enables support for the BCM63xx power domains controller on - BCM6318, BCM6328, BCM6362 and BCM63268 SoCs. - -endif # SOC_BCM63XX - -config BCM_PMB - bool "Broadcom PMB (Power Management Bus) driver" - depends on ARCH_BCMBCA || (COMPILE_TEST && OF) - default ARCH_BCMBCA - select PM_GENERIC_DOMAINS if PM - help - This enables support for the Broadcom's PMB (Power Management Bus) that - is used for disabling and enabling SoC devices. diff --git a/drivers/soc/bcm/bcm63xx/Makefile b/drivers/soc/bcm/bcm63xx/Makefile deleted file mode 100644 index 557eed3d67bd..000000000000 --- a/drivers/soc/bcm/bcm63xx/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -obj-$(CONFIG_BCM63XX_POWER) += bcm63xx-power.o -obj-$(CONFIG_BCM_PMB) += bcm-pmb.o diff --git a/drivers/soc/bcm/bcm63xx/bcm-pmb.c b/drivers/soc/bcm/bcm63xx/bcm-pmb.c deleted file mode 100644 index 9407cac47fdb..000000000000 --- a/drivers/soc/bcm/bcm63xx/bcm-pmb.c +++ /dev/null @@ -1,364 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright (c) 2013 Broadcom - * Copyright (C) 2020 Rafał Miłecki <rafal@milecki.pl> - */ - -#include <dt-bindings/soc/bcm-pmb.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <linux/reset/bcm63xx_pmb.h> - -#define BPCM_ID_REG 0x00 -#define BPCM_CAPABILITIES 0x04 -#define BPCM_CAP_NUM_ZONES 0x000000ff -#define BPCM_CAP_SR_REG_BITS 0x0000ff00 -#define BPCM_CAP_PLLTYPE 0x00030000 -#define BPCM_CAP_UBUS 0x00080000 -#define BPCM_CONTROL 0x08 -#define BPCM_STATUS 0x0c -#define BPCM_ROSC_CONTROL 0x10 -#define BPCM_ROSC_THRESH_H 0x14 -#define BPCM_ROSC_THRESHOLD_BCM6838 0x14 -#define BPCM_ROSC_THRESH_S 0x18 -#define BPCM_ROSC_COUNT_BCM6838 0x18 -#define BPCM_ROSC_COUNT 0x1c -#define BPCM_PWD_CONTROL_BCM6838 0x1c -#define BPCM_PWD_CONTROL 0x20 -#define BPCM_SR_CONTROL_BCM6838 0x20 -#define BPCM_PWD_ACCUM_CONTROL 0x24 -#define BPCM_SR_CONTROL 0x28 -#define BPCM_GLOBAL_CONTROL 0x2c -#define BPCM_MISC_CONTROL 0x30 -#define BPCM_MISC_CONTROL2 0x34 -#define BPCM_SGPHY_CNTL 0x38 -#define BPCM_SGPHY_STATUS 0x3c -#define BPCM_ZONE0 0x40 -#define BPCM_ZONE_CONTROL 0x00 -#define BPCM_ZONE_CONTROL_MANUAL_CLK_EN 0x00000001 -#define BPCM_ZONE_CONTROL_MANUAL_RESET_CTL 0x00000002 -#define BPCM_ZONE_CONTROL_FREQ_SCALE_USED 0x00000004 /* R/O */ -#define BPCM_ZONE_CONTROL_DPG_CAPABLE 0x00000008 /* R/O */ -#define BPCM_ZONE_CONTROL_MANUAL_MEM_PWR 0x00000030 -#define BPCM_ZONE_CONTROL_MANUAL_ISO_CTL 0x00000040 -#define BPCM_ZONE_CONTROL_MANUAL_CTL 0x00000080 -#define BPCM_ZONE_CONTROL_DPG_CTL_EN 0x00000100 -#define BPCM_ZONE_CONTROL_PWR_DN_REQ 0x00000200 -#define BPCM_ZONE_CONTROL_PWR_UP_REQ 0x00000400 -#define BPCM_ZONE_CONTROL_MEM_PWR_CTL_EN 0x00000800 -#define BPCM_ZONE_CONTROL_BLK_RESET_ASSERT 0x00001000 -#define BPCM_ZONE_CONTROL_MEM_STBY 0x00002000 -#define BPCM_ZONE_CONTROL_RESERVED 0x0007c000 -#define BPCM_ZONE_CONTROL_PWR_CNTL_STATE 0x00f80000 -#define BPCM_ZONE_CONTROL_FREQ_SCALAR_DYN_SEL 0x01000000 /* R/O */ -#define BPCM_ZONE_CONTROL_PWR_OFF_STATE 0x02000000 /* R/O */ -#define BPCM_ZONE_CONTROL_PWR_ON_STATE 0x04000000 /* R/O */ -#define BPCM_ZONE_CONTROL_PWR_GOOD 0x08000000 /* R/O */ -#define BPCM_ZONE_CONTROL_DPG_PWR_STATE 0x10000000 /* R/O */ -#define BPCM_ZONE_CONTROL_MEM_PWR_STATE 0x20000000 /* R/O */ -#define BPCM_ZONE_CONTROL_ISO_STATE 0x40000000 /* R/O */ -#define BPCM_ZONE_CONTROL_RESET_STATE 0x80000000 /* R/O */ -#define BPCM_ZONE_CONFIG1 0x04 -#define BPCM_ZONE_CONFIG2 0x08 -#define BPCM_ZONE_FREQ_SCALAR_CONTROL 0x0c -#define BPCM_ZONE_SIZE 0x10 - -struct bcm_pmb { - struct device *dev; - void __iomem *base; - spinlock_t lock; - bool little_endian; - struct genpd_onecell_data genpd_onecell_data; -}; - -struct bcm_pmb_pd_data { - const char * const name; - int id; - u8 bus; - u8 device; -}; - -struct bcm_pmb_pm_domain { - struct bcm_pmb *pmb; - const struct bcm_pmb_pd_data *data; - struct generic_pm_domain genpd; -}; - -static int bcm_pmb_bpcm_read(struct bcm_pmb *pmb, int bus, u8 device, - int offset, u32 *val) -{ - void __iomem *base = pmb->base + bus * 0x20; - unsigned long flags; - int err; - - spin_lock_irqsave(&pmb->lock, flags); - err = bpcm_rd(base, device, offset, val); - spin_unlock_irqrestore(&pmb->lock, flags); - - if (!err) - *val = pmb->little_endian ? le32_to_cpu(*val) : be32_to_cpu(*val); - - return err; -} - -static int bcm_pmb_bpcm_write(struct bcm_pmb *pmb, int bus, u8 device, - int offset, u32 val) -{ - void __iomem *base = pmb->base + bus * 0x20; - unsigned long flags; - int err; - - val = pmb->little_endian ? cpu_to_le32(val) : cpu_to_be32(val); - - spin_lock_irqsave(&pmb->lock, flags); - err = bpcm_wr(base, device, offset, val); - spin_unlock_irqrestore(&pmb->lock, flags); - - return err; -} - -static int bcm_pmb_power_off_zone(struct bcm_pmb *pmb, int bus, u8 device, - int zone) -{ - int offset; - u32 val; - int err; - - offset = BPCM_ZONE0 + zone * BPCM_ZONE_SIZE + BPCM_ZONE_CONTROL; - - err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val); - if (err) - return err; - - val |= BPCM_ZONE_CONTROL_PWR_DN_REQ; - val &= ~BPCM_ZONE_CONTROL_PWR_UP_REQ; - - err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val); - - return err; -} - -static int bcm_pmb_power_on_zone(struct bcm_pmb *pmb, int bus, u8 device, - int zone) -{ - int offset; - u32 val; - int err; - - offset = BPCM_ZONE0 + zone * BPCM_ZONE_SIZE + BPCM_ZONE_CONTROL; - - err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val); - if (err) - return err; - - if (!(val & BPCM_ZONE_CONTROL_PWR_ON_STATE)) { - val &= ~BPCM_ZONE_CONTROL_PWR_DN_REQ; - val |= BPCM_ZONE_CONTROL_DPG_CTL_EN; - val |= BPCM_ZONE_CONTROL_PWR_UP_REQ; - val |= BPCM_ZONE_CONTROL_MEM_PWR_CTL_EN; - val |= BPCM_ZONE_CONTROL_BLK_RESET_ASSERT; - - err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val); - } - - return err; -} - -static int bcm_pmb_power_off_device(struct bcm_pmb *pmb, int bus, u8 device) -{ - int offset; - u32 val; - int err; - - /* Entire device can be powered off by powering off the 0th zone */ - offset = BPCM_ZONE0 + BPCM_ZONE_CONTROL; - - err = bcm_pmb_bpcm_read(pmb, bus, device, offset, &val); - if (err) - return err; - - if (!(val & BPCM_ZONE_CONTROL_PWR_OFF_STATE)) { - val = BPCM_ZONE_CONTROL_PWR_DN_REQ; - - err = bcm_pmb_bpcm_write(pmb, bus, device, offset, val); - } - - return err; -} - -static int bcm_pmb_power_on_device(struct bcm_pmb *pmb, int bus, u8 device) -{ - u32 val; - int err; - int i; - - err = bcm_pmb_bpcm_read(pmb, bus, device, BPCM_CAPABILITIES, &val); - if (err) - return err; - - for (i = 0; i < (val & BPCM_CAP_NUM_ZONES); i++) { - err = bcm_pmb_power_on_zone(pmb, bus, device, i); - if (err) - return err; - } - - return err; -} - -static int bcm_pmb_power_on_sata(struct bcm_pmb *pmb, int bus, u8 device) -{ - int err; - - err = bcm_pmb_power_on_zone(pmb, bus, device, 0); - if (err) - return err; - - /* Does not apply to the BCM963158 */ - err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_MISC_CONTROL, 0); - if (err) - return err; - - err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0xffffffff); - if (err) - return err; - - err = bcm_pmb_bpcm_write(pmb, bus, device, BPCM_SR_CONTROL, 0); - - return err; -} - -static int bcm_pmb_power_on(struct generic_pm_domain *genpd) -{ - struct bcm_pmb_pm_domain *pd = container_of(genpd, struct bcm_pmb_pm_domain, genpd); - const struct bcm_pmb_pd_data *data = pd->data; - struct bcm_pmb *pmb = pd->pmb; - - switch (data->id) { - case BCM_PMB_PCIE0: - case BCM_PMB_PCIE1: - case BCM_PMB_PCIE2: - return bcm_pmb_power_on_zone(pmb, data->bus, data->device, 0); - case BCM_PMB_HOST_USB: - return bcm_pmb_power_on_device(pmb, data->bus, data->device); - case BCM_PMB_SATA: - return bcm_pmb_power_on_sata(pmb, data->bus, data->device); - default: - dev_err(pmb->dev, "unsupported device id: %d\n", data->id); - return -EINVAL; - } -} - -static int bcm_pmb_power_off(struct generic_pm_domain *genpd) -{ - struct bcm_pmb_pm_domain *pd = container_of(genpd, struct bcm_pmb_pm_domain, genpd); - const struct bcm_pmb_pd_data *data = pd->data; - struct bcm_pmb *pmb = pd->pmb; - - switch (data->id) { - case BCM_PMB_PCIE0: - case BCM_PMB_PCIE1: - case BCM_PMB_PCIE2: - return bcm_pmb_power_off_zone(pmb, data->bus, data->device, 0); - case BCM_PMB_HOST_USB: - return bcm_pmb_power_off_device(pmb, data->bus, data->device); - default: - dev_err(pmb->dev, "unsupported device id: %d\n", data->id); - return -EINVAL; - } -} - -static int bcm_pmb_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - const struct bcm_pmb_pd_data *table; - const struct bcm_pmb_pd_data *e; - struct bcm_pmb *pmb; - int max_id; - int err; - - pmb = devm_kzalloc(dev, sizeof(*pmb), GFP_KERNEL); - if (!pmb) - return -ENOMEM; - - pmb->dev = dev; - - pmb->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(pmb->base)) - return PTR_ERR(pmb->base); - - spin_lock_init(&pmb->lock); - - pmb->little_endian = !of_device_is_big_endian(dev->of_node); - - table = of_device_get_match_data(dev); - if (!table) - return -EINVAL; - - max_id = 0; - for (e = table; e->name; e++) - max_id = max(max_id, e->id); - - pmb->genpd_onecell_data.num_domains = max_id + 1; - pmb->genpd_onecell_data.domains = - devm_kcalloc(dev, pmb->genpd_onecell_data.num_domains, - sizeof(struct generic_pm_domain *), GFP_KERNEL); - if (!pmb->genpd_onecell_data.domains) - return -ENOMEM; - - for (e = table; e->name; e++) { - struct bcm_pmb_pm_domain *pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); - - if (!pd) - return -ENOMEM; - - pd->pmb = pmb; - pd->data = e; - pd->genpd.name = e->name; - pd->genpd.power_on = bcm_pmb_power_on; - pd->genpd.power_off = bcm_pmb_power_off; - - pm_genpd_init(&pd->genpd, NULL, true); - pmb->genpd_onecell_data.domains[e->id] = &pd->genpd; - } - - err = of_genpd_add_provider_onecell(dev->of_node, &pmb->genpd_onecell_data); - if (err) { - dev_err(dev, "failed to add genpd provider: %d\n", err); - return err; - } - - return 0; -} - -static const struct bcm_pmb_pd_data bcm_pmb_bcm4908_data[] = { - { .name = "pcie2", .id = BCM_PMB_PCIE2, .bus = 0, .device = 2, }, - { .name = "pcie0", .id = BCM_PMB_PCIE0, .bus = 1, .device = 14, }, - { .name = "pcie1", .id = BCM_PMB_PCIE1, .bus = 1, .device = 15, }, - { .name = "usb", .id = BCM_PMB_HOST_USB, .bus = 1, .device = 17, }, - { }, -}; - -static const struct bcm_pmb_pd_data bcm_pmb_bcm63138_data[] = { - { .name = "sata", .id = BCM_PMB_SATA, .bus = 0, .device = 3, }, - { }, -}; - -static const struct of_device_id bcm_pmb_of_match[] = { - { .compatible = "brcm,bcm4908-pmb", .data = &bcm_pmb_bcm4908_data, }, - { .compatible = "brcm,bcm63138-pmb", .data = &bcm_pmb_bcm63138_data, }, - { }, -}; - -static struct platform_driver bcm_pmb_driver = { - .driver = { - .name = "bcm-pmb", - .of_match_table = bcm_pmb_of_match, - }, - .probe = bcm_pmb_probe, -}; - -builtin_platform_driver(bcm_pmb_driver); diff --git a/drivers/soc/bcm/bcm63xx/bcm63xx-power.c b/drivers/soc/bcm/bcm63xx/bcm63xx-power.c deleted file mode 100644 index aa72e13d5d0e..000000000000 --- a/drivers/soc/bcm/bcm63xx/bcm63xx-power.c +++ /dev/null @@ -1,376 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * BCM63xx Power Domain Controller Driver - * - * Copyright (C) 2020 Álvaro Fernández Rojas <noltari@gmail.com> - */ - -#include <dt-bindings/soc/bcm6318-pm.h> -#include <dt-bindings/soc/bcm6328-pm.h> -#include <dt-bindings/soc/bcm6362-pm.h> -#include <dt-bindings/soc/bcm63268-pm.h> -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <linux/of.h> -#include <linux/of_device.h> - -struct bcm63xx_power_dev { - struct generic_pm_domain genpd; - struct bcm63xx_power *power; - uint32_t mask; -}; - -struct bcm63xx_power { - void __iomem *base; - spinlock_t lock; - struct bcm63xx_power_dev *dev; - struct genpd_onecell_data genpd_data; - struct generic_pm_domain **genpd; -}; - -struct bcm63xx_power_data { - const char * const name; - uint8_t bit; - unsigned int flags; -}; - -static int bcm63xx_power_get_state(struct bcm63xx_power_dev *pmd, bool *is_on) -{ - struct bcm63xx_power *power = pmd->power; - - if (!pmd->mask) { - *is_on = false; - return -EINVAL; - } - - *is_on = !(__raw_readl(power->base) & pmd->mask); - - return 0; -} - -static int bcm63xx_power_set_state(struct bcm63xx_power_dev *pmd, bool on) -{ - struct bcm63xx_power *power = pmd->power; - unsigned long flags; - uint32_t val; - - if (!pmd->mask) - return -EINVAL; - - spin_lock_irqsave(&power->lock, flags); - val = __raw_readl(power->base); - if (on) - val &= ~pmd->mask; - else - val |= pmd->mask; - __raw_writel(val, power->base); - spin_unlock_irqrestore(&power->lock, flags); - - return 0; -} - -static int bcm63xx_power_on(struct generic_pm_domain *genpd) -{ - struct bcm63xx_power_dev *pmd = container_of(genpd, - struct bcm63xx_power_dev, genpd); - - return bcm63xx_power_set_state(pmd, true); -} - -static int bcm63xx_power_off(struct generic_pm_domain *genpd) -{ - struct bcm63xx_power_dev *pmd = container_of(genpd, - struct bcm63xx_power_dev, genpd); - - return bcm63xx_power_set_state(pmd, false); -} - -static int bcm63xx_power_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - const struct bcm63xx_power_data *entry, *table; - struct bcm63xx_power *power; - unsigned int ndom; - uint8_t max_bit = 0; - int ret; - - power = devm_kzalloc(dev, sizeof(*power), GFP_KERNEL); - if (!power) - return -ENOMEM; - - power->base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(power->base)) - return PTR_ERR(power->base); - - table = of_device_get_match_data(dev); - if (!table) - return -EINVAL; - - power->genpd_data.num_domains = 0; - ndom = 0; - for (entry = table; entry->name; entry++) { - max_bit = max(max_bit, entry->bit); - ndom++; - } - - if (!ndom) - return -ENODEV; - - power->genpd_data.num_domains = max_bit + 1; - - power->dev = devm_kcalloc(dev, power->genpd_data.num_domains, - sizeof(struct bcm63xx_power_dev), - GFP_KERNEL); - if (!power->dev) - return -ENOMEM; - - power->genpd = devm_kcalloc(dev, power->genpd_data.num_domains, - sizeof(struct generic_pm_domain *), - GFP_KERNEL); - if (!power->genpd) - return -ENOMEM; - - power->genpd_data.domains = power->genpd; - - ndom = 0; - for (entry = table; entry->name; entry++) { - struct bcm63xx_power_dev *pmd = &power->dev[ndom]; - bool is_on; - - pmd->power = power; - pmd->mask = BIT(entry->bit); - pmd->genpd.name = entry->name; - pmd->genpd.flags = entry->flags; - - ret = bcm63xx_power_get_state(pmd, &is_on); - if (ret) - dev_warn(dev, "unable to get current state for %s\n", - pmd->genpd.name); - - pmd->genpd.power_on = bcm63xx_power_on; - pmd->genpd.power_off = bcm63xx_power_off; - - pm_genpd_init(&pmd->genpd, NULL, !is_on); - power->genpd[entry->bit] = &pmd->genpd; - - ndom++; - } - - spin_lock_init(&power->lock); - - ret = of_genpd_add_provider_onecell(np, &power->genpd_data); - if (ret) { - dev_err(dev, "failed to register genpd driver: %d\n", ret); - return ret; - } - - dev_info(dev, "registered %u power domains\n", ndom); - - return 0; -} - -static const struct bcm63xx_power_data bcm6318_power_domains[] = { - { - .name = "pcie", - .bit = BCM6318_POWER_DOMAIN_PCIE, - }, { - .name = "usb", - .bit = BCM6318_POWER_DOMAIN_USB, - }, { - .name = "ephy0", - .bit = BCM6318_POWER_DOMAIN_EPHY0, - }, { - .name = "ephy1", - .bit = BCM6318_POWER_DOMAIN_EPHY1, - }, { - .name = "ephy2", - .bit = BCM6318_POWER_DOMAIN_EPHY2, - }, { - .name = "ephy3", - .bit = BCM6318_POWER_DOMAIN_EPHY3, - }, { - .name = "ldo2p5", - .bit = BCM6318_POWER_DOMAIN_LDO2P5, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "ldo2p9", - .bit = BCM6318_POWER_DOMAIN_LDO2P9, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "sw1p0", - .bit = BCM6318_POWER_DOMAIN_SW1P0, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "pad", - .bit = BCM6318_POWER_DOMAIN_PAD, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm6328_power_domains[] = { - { - .name = "adsl2-mips", - .bit = BCM6328_POWER_DOMAIN_ADSL2_MIPS, - }, { - .name = "adsl2-phy", - .bit = BCM6328_POWER_DOMAIN_ADSL2_PHY, - }, { - .name = "adsl2-afe", - .bit = BCM6328_POWER_DOMAIN_ADSL2_AFE, - }, { - .name = "sar", - .bit = BCM6328_POWER_DOMAIN_SAR, - }, { - .name = "pcm", - .bit = BCM6328_POWER_DOMAIN_PCM, - }, { - .name = "usbd", - .bit = BCM6328_POWER_DOMAIN_USBD, - }, { - .name = "usbh", - .bit = BCM6328_POWER_DOMAIN_USBH, - }, { - .name = "pcie", - .bit = BCM6328_POWER_DOMAIN_PCIE, - }, { - .name = "robosw", - .bit = BCM6328_POWER_DOMAIN_ROBOSW, - }, { - .name = "ephy", - .bit = BCM6328_POWER_DOMAIN_EPHY, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm6362_power_domains[] = { - { - .name = "sar", - .bit = BCM6362_POWER_DOMAIN_SAR, - }, { - .name = "ipsec", - .bit = BCM6362_POWER_DOMAIN_IPSEC, - }, { - .name = "mips", - .bit = BCM6362_POWER_DOMAIN_MIPS, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "dect", - .bit = BCM6362_POWER_DOMAIN_DECT, - }, { - .name = "usbh", - .bit = BCM6362_POWER_DOMAIN_USBH, - }, { - .name = "usbd", - .bit = BCM6362_POWER_DOMAIN_USBD, - }, { - .name = "robosw", - .bit = BCM6362_POWER_DOMAIN_ROBOSW, - }, { - .name = "pcm", - .bit = BCM6362_POWER_DOMAIN_PCM, - }, { - .name = "periph", - .bit = BCM6362_POWER_DOMAIN_PERIPH, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "adsl-phy", - .bit = BCM6362_POWER_DOMAIN_ADSL_PHY, - }, { - .name = "gmii-pads", - .bit = BCM6362_POWER_DOMAIN_GMII_PADS, - }, { - .name = "fap", - .bit = BCM6362_POWER_DOMAIN_FAP, - }, { - .name = "pcie", - .bit = BCM6362_POWER_DOMAIN_PCIE, - }, { - .name = "wlan-pads", - .bit = BCM6362_POWER_DOMAIN_WLAN_PADS, - }, { - /* sentinel */ - }, -}; - -static const struct bcm63xx_power_data bcm63268_power_domains[] = { - { - .name = "sar", - .bit = BCM63268_POWER_DOMAIN_SAR, - }, { - .name = "ipsec", - .bit = BCM63268_POWER_DOMAIN_IPSEC, - }, { - .name = "mips", - .bit = BCM63268_POWER_DOMAIN_MIPS, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "dect", - .bit = BCM63268_POWER_DOMAIN_DECT, - }, { - .name = "usbh", - .bit = BCM63268_POWER_DOMAIN_USBH, - }, { - .name = "usbd", - .bit = BCM63268_POWER_DOMAIN_USBD, - }, { - .name = "robosw", - .bit = BCM63268_POWER_DOMAIN_ROBOSW, - }, { - .name = "pcm", - .bit = BCM63268_POWER_DOMAIN_PCM, - }, { - .name = "periph", - .bit = BCM63268_POWER_DOMAIN_PERIPH, - .flags = GENPD_FLAG_ALWAYS_ON, - }, { - .name = "vdsl-phy", - .bit = BCM63268_POWER_DOMAIN_VDSL_PHY, - }, { - .name = "vdsl-mips", - .bit = BCM63268_POWER_DOMAIN_VDSL_MIPS, - }, { - .name = "fap", - .bit = BCM63268_POWER_DOMAIN_FAP, - }, { - .name = "pcie", - .bit = BCM63268_POWER_DOMAIN_PCIE, - }, { - .name = "wlan-pads", - .bit = BCM63268_POWER_DOMAIN_WLAN_PADS, - }, { - /* sentinel */ - }, -}; - -static const struct of_device_id bcm63xx_power_of_match[] = { - { - .compatible = "brcm,bcm6318-power-controller", - .data = &bcm6318_power_domains, - }, { - .compatible = "brcm,bcm6328-power-controller", - .data = &bcm6328_power_domains, - }, { - .compatible = "brcm,bcm6362-power-controller", - .data = &bcm6362_power_domains, - }, { - .compatible = "brcm,bcm63268-power-controller", - .data = &bcm63268_power_domains, - }, { - /* sentinel */ - } -}; - -static struct platform_driver bcm63xx_power_driver = { - .driver = { - .name = "bcm63xx-power-controller", - .of_match_table = bcm63xx_power_of_match, - }, - .probe = bcm63xx_power_probe, -}; -builtin_platform_driver(bcm63xx_power_driver); diff --git a/drivers/soc/bcm/raspberrypi-power.c b/drivers/soc/bcm/raspberrypi-power.c deleted file mode 100644 index 58175af982a0..000000000000 --- a/drivers/soc/bcm/raspberrypi-power.c +++ /dev/null @@ -1,245 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* (C) 2015 Pengutronix, Alexander Aring <aar@pengutronix.de> - * - * Authors: - * Alexander Aring <aar@pengutronix.de> - * Eric Anholt <eric@anholt.net> - */ - -#include <linux/module.h> -#include <linux/of_platform.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <dt-bindings/power/raspberrypi-power.h> -#include <soc/bcm2835/raspberrypi-firmware.h> - -/* - * Firmware indices for the old power domains interface. Only a few - * of them were actually implemented. - */ -#define RPI_OLD_POWER_DOMAIN_USB 3 -#define RPI_OLD_POWER_DOMAIN_V3D 10 - -struct rpi_power_domain { - u32 domain; - bool enabled; - bool old_interface; - struct generic_pm_domain base; - struct rpi_firmware *fw; -}; - -struct rpi_power_domains { - bool has_new_interface; - struct genpd_onecell_data xlate; - struct rpi_firmware *fw; - struct rpi_power_domain domains[RPI_POWER_DOMAIN_COUNT]; -}; - -/* - * Packet definition used by RPI_FIRMWARE_SET_POWER_STATE and - * RPI_FIRMWARE_SET_DOMAIN_STATE - */ -struct rpi_power_domain_packet { - u32 domain; - u32 on; -}; - -/* - * Asks the firmware to enable or disable power on a specific power - * domain. - */ -static int rpi_firmware_set_power(struct rpi_power_domain *rpi_domain, bool on) -{ - struct rpi_power_domain_packet packet; - - packet.domain = rpi_domain->domain; - packet.on = on; - return rpi_firmware_property(rpi_domain->fw, - rpi_domain->old_interface ? - RPI_FIRMWARE_SET_POWER_STATE : - RPI_FIRMWARE_SET_DOMAIN_STATE, - &packet, sizeof(packet)); -} - -static int rpi_domain_off(struct generic_pm_domain *domain) -{ - struct rpi_power_domain *rpi_domain = - container_of(domain, struct rpi_power_domain, base); - - return rpi_firmware_set_power(rpi_domain, false); -} - -static int rpi_domain_on(struct generic_pm_domain *domain) -{ - struct rpi_power_domain *rpi_domain = - container_of(domain, struct rpi_power_domain, base); - - return rpi_firmware_set_power(rpi_domain, true); -} - -static void rpi_common_init_power_domain(struct rpi_power_domains *rpi_domains, - int xlate_index, const char *name) -{ - struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index]; - - dom->fw = rpi_domains->fw; - - dom->base.name = name; - dom->base.power_on = rpi_domain_on; - dom->base.power_off = rpi_domain_off; - - /* - * Treat all power domains as off at boot. - * - * The firmware itself may be keeping some domains on, but - * from Linux's perspective all we control is the refcounts - * that we give to the firmware, and we can't ask the firmware - * to turn off something that we haven't ourselves turned on. - */ - pm_genpd_init(&dom->base, NULL, true); - - rpi_domains->xlate.domains[xlate_index] = &dom->base; -} - -static void rpi_init_power_domain(struct rpi_power_domains *rpi_domains, - int xlate_index, const char *name) -{ - struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index]; - - if (!rpi_domains->has_new_interface) - return; - - /* The DT binding index is the firmware's domain index minus one. */ - dom->domain = xlate_index + 1; - - rpi_common_init_power_domain(rpi_domains, xlate_index, name); -} - -static void rpi_init_old_power_domain(struct rpi_power_domains *rpi_domains, - int xlate_index, int domain, - const char *name) -{ - struct rpi_power_domain *dom = &rpi_domains->domains[xlate_index]; - - dom->old_interface = true; - dom->domain = domain; - - rpi_common_init_power_domain(rpi_domains, xlate_index, name); -} - -/* - * Detects whether the firmware supports the new power domains interface. - * - * The firmware doesn't actually return an error on an unknown tag, - * and just skips over it, so we do the detection by putting an - * unexpected value in the return field and checking if it was - * unchanged. - */ -static bool -rpi_has_new_domain_support(struct rpi_power_domains *rpi_domains) -{ - struct rpi_power_domain_packet packet; - int ret; - - packet.domain = RPI_POWER_DOMAIN_ARM; - packet.on = ~0; - - ret = rpi_firmware_property(rpi_domains->fw, - RPI_FIRMWARE_GET_DOMAIN_STATE, - &packet, sizeof(packet)); - - return ret == 0 && packet.on != ~0; -} - -static int rpi_power_probe(struct platform_device *pdev) -{ - struct device_node *fw_np; - struct device *dev = &pdev->dev; - struct rpi_power_domains *rpi_domains; - - rpi_domains = devm_kzalloc(dev, sizeof(*rpi_domains), GFP_KERNEL); - if (!rpi_domains) - return -ENOMEM; - - rpi_domains->xlate.domains = - devm_kcalloc(dev, - RPI_POWER_DOMAIN_COUNT, - sizeof(*rpi_domains->xlate.domains), - GFP_KERNEL); - if (!rpi_domains->xlate.domains) - return -ENOMEM; - - rpi_domains->xlate.num_domains = RPI_POWER_DOMAIN_COUNT; - - fw_np = of_parse_phandle(pdev->dev.of_node, "firmware", 0); - if (!fw_np) { - dev_err(&pdev->dev, "no firmware node\n"); - return -ENODEV; - } - - rpi_domains->fw = devm_rpi_firmware_get(&pdev->dev, fw_np); - of_node_put(fw_np); - if (!rpi_domains->fw) - return -EPROBE_DEFER; - - rpi_domains->has_new_interface = - rpi_has_new_domain_support(rpi_domains); - - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C0, "I2C0"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C1, "I2C1"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_I2C2, "I2C2"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VIDEO_SCALER, - "VIDEO_SCALER"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VPU1, "VPU1"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_HDMI, "HDMI"); - - /* - * Use the old firmware interface for USB power, so that we - * can turn it on even if the firmware hasn't been updated. - */ - rpi_init_old_power_domain(rpi_domains, RPI_POWER_DOMAIN_USB, - RPI_OLD_POWER_DOMAIN_USB, "USB"); - - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_VEC, "VEC"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_JPEG, "JPEG"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_H264, "H264"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_V3D, "V3D"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ISP, "ISP"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM0, "UNICAM0"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_UNICAM1, "UNICAM1"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2RX, "CCP2RX"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CSI2, "CSI2"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CPI, "CPI"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI0, "DSI0"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_DSI1, "DSI1"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_TRANSPOSER, - "TRANSPOSER"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CCP2TX, "CCP2TX"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_CDP, "CDP"); - rpi_init_power_domain(rpi_domains, RPI_POWER_DOMAIN_ARM, "ARM"); - - of_genpd_add_provider_onecell(dev->of_node, &rpi_domains->xlate); - - platform_set_drvdata(pdev, rpi_domains); - - return 0; -} - -static const struct of_device_id rpi_power_of_match[] = { - { .compatible = "raspberrypi,bcm2835-power", }, - {}, -}; -MODULE_DEVICE_TABLE(of, rpi_power_of_match); - -static struct platform_driver rpi_power_driver = { - .driver = { - .name = "raspberrypi-power", - .of_match_table = rpi_power_of_match, - }, - .probe = rpi_power_probe, -}; -builtin_platform_driver(rpi_power_driver); - -MODULE_AUTHOR("Alexander Aring <aar@pengutronix.de>"); -MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); -MODULE_DESCRIPTION("Raspberry Pi power domain driver"); |