diff options
Diffstat (limited to 'arch/arm/mach-zx/zx296702-pm-domain.c')
| -rw-r--r-- | arch/arm/mach-zx/zx296702-pm-domain.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/arch/arm/mach-zx/zx296702-pm-domain.c b/arch/arm/mach-zx/zx296702-pm-domain.c deleted file mode 100644 index 7a08bf9dd792..000000000000 --- a/arch/arm/mach-zx/zx296702-pm-domain.c +++ /dev/null @@ -1,202 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Copyright (C) 2015 Linaro Ltd. - * - * Author: Jun Nie <jun.nie@linaro.org> - */ -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/platform_device.h> -#include <linux/pm_domain.h> -#include <linux/slab.h> - -#define PCU_DM_CLKEN 0x18 -#define PCU_DM_RSTEN 0x1C -#define PCU_DM_ISOEN 0x20 -#define PCU_DM_PWRDN 0x24 -#define PCU_DM_ACK_SYNC 0x28 - -enum { - PCU_DM_NEON0 = 0, - PCU_DM_NEON1, - PCU_DM_GPU, - PCU_DM_DECPPU, - PCU_DM_VOU, - PCU_DM_R2D, - PCU_DM_TOP, -}; - -static void __iomem *pcubase; - -struct zx_pm_domain { - struct generic_pm_domain dm; - unsigned int bit; -}; - -static int normal_power_off(struct generic_pm_domain *domain) -{ - struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain; - unsigned long loop = 1000; - u32 tmp; - - tmp = readl_relaxed(pcubase + PCU_DM_CLKEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp, pcubase + PCU_DM_CLKEN); - udelay(5); - - tmp = readl_relaxed(pcubase + PCU_DM_ISOEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_ISOEN); - udelay(5); - - tmp = readl_relaxed(pcubase + PCU_DM_RSTEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp, pcubase + PCU_DM_RSTEN); - udelay(5); - - tmp = readl_relaxed(pcubase + PCU_DM_PWRDN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_PWRDN); - do { - tmp = readl_relaxed(pcubase + PCU_DM_ACK_SYNC) & BIT(zpd->bit); - } while (--loop && !tmp); - - if (!loop) { - pr_err("Error: %s %s fail\n", __func__, domain->name); - return -EIO; - } - - return 0; -} - -static int normal_power_on(struct generic_pm_domain *domain) -{ - struct zx_pm_domain *zpd = (struct zx_pm_domain *)domain; - unsigned long loop = 10000; - u32 tmp; - - tmp = readl_relaxed(pcubase + PCU_DM_PWRDN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp, pcubase + PCU_DM_PWRDN); - do { - tmp = readl_relaxed(pcubase + PCU_DM_ACK_SYNC) & BIT(zpd->bit); - } while (--loop && tmp); - - if (!loop) { - pr_err("Error: %s %s fail\n", __func__, domain->name); - return -EIO; - } - - tmp = readl_relaxed(pcubase + PCU_DM_RSTEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_RSTEN); - udelay(5); - - tmp = readl_relaxed(pcubase + PCU_DM_ISOEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp, pcubase + PCU_DM_ISOEN); - udelay(5); - - tmp = readl_relaxed(pcubase + PCU_DM_CLKEN); - tmp &= ~BIT(zpd->bit); - writel_relaxed(tmp | BIT(zpd->bit), pcubase + PCU_DM_CLKEN); - udelay(5); - return 0; -} - -static struct zx_pm_domain gpu_domain = { - .dm = { - .name = "gpu_domain", - .power_off = normal_power_off, - .power_on = normal_power_on, - }, - .bit = PCU_DM_GPU, -}; - -static struct zx_pm_domain decppu_domain = { - .dm = { - .name = "decppu_domain", - .power_off = normal_power_off, - .power_on = normal_power_on, - }, - .bit = PCU_DM_DECPPU, -}; - -static struct zx_pm_domain vou_domain = { - .dm = { - .name = "vou_domain", - .power_off = normal_power_off, - .power_on = normal_power_on, - }, - .bit = PCU_DM_VOU, -}; - -static struct zx_pm_domain r2d_domain = { - .dm = { - .name = "r2d_domain", - .power_off = normal_power_off, - .power_on = normal_power_on, - }, - .bit = PCU_DM_R2D, -}; - -static struct generic_pm_domain *zx296702_pm_domains[] = { - &vou_domain.dm, - &gpu_domain.dm, - &decppu_domain.dm, - &r2d_domain.dm, -}; - -static int zx296702_pd_probe(struct platform_device *pdev) -{ - struct genpd_onecell_data *genpd_data; - struct resource *res; - int i; - - genpd_data = devm_kzalloc(&pdev->dev, sizeof(*genpd_data), GFP_KERNEL); - if (!genpd_data) - return -ENOMEM; - - genpd_data->domains = zx296702_pm_domains; - genpd_data->num_domains = ARRAY_SIZE(zx296702_pm_domains); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no memory resource defined\n"); - return -ENODEV; - } - - pcubase = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(pcubase)) { - dev_err(&pdev->dev, "ioremap fail.\n"); - return -EIO; - } - - for (i = 0; i < ARRAY_SIZE(zx296702_pm_domains); ++i) - pm_genpd_init(zx296702_pm_domains[i], NULL, false); - - of_genpd_add_provider_onecell(pdev->dev.of_node, genpd_data); - return 0; -} - -static const struct of_device_id zx296702_pm_domain_matches[] __initconst = { - { .compatible = "zte,zx296702-pcu", }, - { }, -}; - -static struct platform_driver zx296702_pd_driver __initdata = { - .driver = { - .name = "zx-powerdomain", - .owner = THIS_MODULE, - .of_match_table = zx296702_pm_domain_matches, - }, - .probe = zx296702_pd_probe, -}; - -static int __init zx296702_pd_init(void) -{ - return platform_driver_register(&zx296702_pd_driver); -} -subsys_initcall(zx296702_pd_init); |