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Diffstat (limited to 'target/linux/bcm4908/patches-5.4/082-v5.12-0002-soc-bcm-add-PM-driver-for-Broadcom-s-PMB.patch')
-rw-r--r--target/linux/bcm4908/patches-5.4/082-v5.12-0002-soc-bcm-add-PM-driver-for-Broadcom-s-PMB.patch414
1 files changed, 0 insertions, 414 deletions
diff --git a/target/linux/bcm4908/patches-5.4/082-v5.12-0002-soc-bcm-add-PM-driver-for-Broadcom-s-PMB.patch b/target/linux/bcm4908/patches-5.4/082-v5.12-0002-soc-bcm-add-PM-driver-for-Broadcom-s-PMB.patch
deleted file mode 100644
index 40126a968b..0000000000
--- a/target/linux/bcm4908/patches-5.4/082-v5.12-0002-soc-bcm-add-PM-driver-for-Broadcom-s-PMB.patch
+++ /dev/null
@@ -1,414 +0,0 @@
-From 8bcac4011ebe0dbdd46fd55b036ee855c95702d3 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
-Date: Mon, 14 Dec 2020 19:07:43 +0100
-Subject: [PATCH] soc: bcm: add PM driver for Broadcom's PMB
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-PMB originally comes from BCM63138 but can be also found on many other
-chipsets (e.g. BCM4908). It's needed to power on and off SoC blocks like
-PCIe, SATA, USB.
-
-Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
-Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
-Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
----
- MAINTAINERS | 10 +
- drivers/soc/bcm/Makefile | 2 +-
- drivers/soc/bcm/bcm63xx/Kconfig | 9 +
- drivers/soc/bcm/bcm63xx/Makefile | 1 +
- drivers/soc/bcm/bcm63xx/bcm-pmb.c | 333 ++++++++++++++++++++++++++++++
- 5 files changed, 354 insertions(+), 1 deletion(-)
- create mode 100644 drivers/soc/bcm/bcm63xx/bcm-pmb.c
-
---- a/MAINTAINERS
-+++ b/MAINTAINERS
-@@ -3415,6 +3415,16 @@ L: linux-mips@vger.kernel.org
- S: Maintained
- F: drivers/firmware/broadcom/*
-
-+BROADCOM PMB (POWER MANAGEMENT BUS) DRIVER
-+M: Rafał Miłecki <rafal@milecki.pl>
-+M: Florian Fainelli <f.fainelli@gmail.com>
-+M: bcm-kernel-feedback-list@broadcom.com
-+L: linux-pm@vger.kernel.org
-+S: Maintained
-+T: git git://github.com/broadcom/stblinux.git
-+F: drivers/soc/bcm/bcm-pmb.c
-+F: include/dt-bindings/soc/bcm-pmb.h
-+
- BROADCOM SPECIFIC AMBA DRIVER (BCMA)
- M: Rafał Miłecki <zajec5@gmail.com>
- L: linux-wireless@vger.kernel.org
---- /dev/null
-+++ b/drivers/soc/bcm/bcm63xx/Kconfig
-@@ -0,0 +1,9 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+config BCM_PMB
-+ bool "Broadcom PMB (Power Management Bus) driver"
-+ depends on ARCH_BCM4908 || (COMPILE_TEST && OF)
-+ default ARCH_BCM4908
-+ 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.
---- /dev/null
-+++ b/drivers/soc/bcm/bcm63xx/Makefile
-@@ -0,0 +1,2 @@
-+# SPDX-License-Identifier: GPL-2.0-only
-+obj-$(CONFIG_BCM_PMB) += bcm-pmb.o
---- /dev/null
-+++ b/drivers/soc/bcm/bcm63xx/bcm-pmb.c
-@@ -0,0 +1,333 @@
-+// 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(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);
-+ 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 resource *res;
-+ struct bcm_pmb *pmb;
-+ int max_id;
-+ int err;
-+
-+ pmb = devm_kzalloc(dev, sizeof(*pmb), GFP_KERNEL);
-+ if (!pmb)
-+ return -ENOMEM;
-+
-+ pmb->dev = dev;
-+
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ pmb->base = devm_ioremap_resource(&pdev->dev, res);
-+ 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);
-+
-+ 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 of_device_id bcm_pmb_of_match[] = {
-+ { .compatible = "brcm,bcm4908-pmb", .data = &bcm_pmb_bcm4908_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);
---- a/drivers/soc/bcm/Kconfig
-+++ b/drivers/soc/bcm/Kconfig
-@@ -33,6 +33,7 @@ config SOC_BRCMSTB
-
- If unsure, say N.
-
-+source "drivers/soc/bcm/bcm63xx/Kconfig"
- source "drivers/soc/bcm/brcmstb/Kconfig"
-
- endmenu
---- a/drivers/soc/bcm/Makefile
-+++ b/drivers/soc/bcm/Makefile
-@@ -1,4 +1,5 @@
- # 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/
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 14:32:56 +0000