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path: root/drivers/soc/bcm/bcm63xx/bcm-pmb.c
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Diffstat (limited to 'drivers/soc/bcm/bcm63xx/bcm-pmb.c')
-rw-r--r--drivers/soc/bcm/bcm63xx/bcm-pmb.c364
1 files changed, 0 insertions, 364 deletions
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);
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-05 08:38:36 +0300