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Merge branch 'for-v5.15/omap-gpmc' into for-next

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This commit is contained in:
Krzysztof Kozlowski 2021-07-29 09:03:32 +02:00
commit c28b584deb
3 changed files with 118 additions and 81 deletions
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5
arch/arm/mach-omap2/pm34xx.c
View File

@ -26,7 +26,6 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/omap-gpmc.h>
#include <trace/events/power.h>
@ -81,8 +80,6 @@ static void omap3_core_save_context(void)
/* Save the Interrupt controller context */
omap_intc_save_context();
/* Save the GPMC context */
omap3_gpmc_save_context();
/* Save the system control module context, padconf already save above*/
omap3_control_save_context();
}
@ -91,8 +88,6 @@ static void omap3_core_restore_context(void)
{
/* Restore the control module context, padconf restored by h/w */
omap3_control_restore_context();
/* Restore the GPMC context */
omap3_gpmc_restore_context();
/* Restore the interrupt controller context */
omap_intc_restore_context();
}

191
drivers/memory/omap-gpmc.c
View File

@ -9,6 +9,7 @@
* Copyright (C) 2009 Texas Instruments
* Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
*/
#include <linux/cpu_pm.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/init.h>
@ -232,7 +233,10 @@ struct gpmc_device {
int irq;
struct irq_chip irq_chip;
struct gpio_chip gpio_chip;
struct notifier_block nb;
struct omap3_gpmc_regs context;
int nirqs;
unsigned int is_suspended:1;
};
static struct irq_domain *gpmc_irq_domain;
@ -2384,6 +2388,106 @@ static int gpmc_gpio_init(struct gpmc_device *gpmc)
return 0;
}
static void omap3_gpmc_save_context(struct gpmc_device *gpmc)
{
struct omap3_gpmc_regs *gpmc_context;
int i;
if (!gpmc || !gpmc_base)
return;
gpmc_context = &gpmc->context;
gpmc_context->sysconfig = gpmc_read_reg(GPMC_SYSCONFIG);
gpmc_context->irqenable = gpmc_read_reg(GPMC_IRQENABLE);
gpmc_context->timeout_ctrl = gpmc_read_reg(GPMC_TIMEOUT_CONTROL);
gpmc_context->config = gpmc_read_reg(GPMC_CONFIG);
gpmc_context->prefetch_config1 = gpmc_read_reg(GPMC_PREFETCH_CONFIG1);
gpmc_context->prefetch_config2 = gpmc_read_reg(GPMC_PREFETCH_CONFIG2);
gpmc_context->prefetch_control = gpmc_read_reg(GPMC_PREFETCH_CONTROL);
for (i = 0; i < gpmc_cs_num; i++) {
gpmc_context->cs_context[i].is_valid = gpmc_cs_mem_enabled(i);
if (gpmc_context->cs_context[i].is_valid) {
gpmc_context->cs_context[i].config1 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG1);
gpmc_context->cs_context[i].config2 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG2);
gpmc_context->cs_context[i].config3 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG3);
gpmc_context->cs_context[i].config4 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG4);
gpmc_context->cs_context[i].config5 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG5);
gpmc_context->cs_context[i].config6 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG6);
gpmc_context->cs_context[i].config7 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG7);
}
}
}
static void omap3_gpmc_restore_context(struct gpmc_device *gpmc)
{
struct omap3_gpmc_regs *gpmc_context;
int i;
if (!gpmc || !gpmc_base)
return;
gpmc_context = &gpmc->context;
gpmc_write_reg(GPMC_SYSCONFIG, gpmc_context->sysconfig);
gpmc_write_reg(GPMC_IRQENABLE, gpmc_context->irqenable);
gpmc_write_reg(GPMC_TIMEOUT_CONTROL, gpmc_context->timeout_ctrl);
gpmc_write_reg(GPMC_CONFIG, gpmc_context->config);
gpmc_write_reg(GPMC_PREFETCH_CONFIG1, gpmc_context->prefetch_config1);
gpmc_write_reg(GPMC_PREFETCH_CONFIG2, gpmc_context->prefetch_config2);
gpmc_write_reg(GPMC_PREFETCH_CONTROL, gpmc_context->prefetch_control);
for (i = 0; i < gpmc_cs_num; i++) {
if (gpmc_context->cs_context[i].is_valid) {
gpmc_cs_write_reg(i, GPMC_CS_CONFIG1,
gpmc_context->cs_context[i].config1);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG2,
gpmc_context->cs_context[i].config2);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG3,
gpmc_context->cs_context[i].config3);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG4,
gpmc_context->cs_context[i].config4);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG5,
gpmc_context->cs_context[i].config5);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG6,
gpmc_context->cs_context[i].config6);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG7,
gpmc_context->cs_context[i].config7);
} else {
gpmc_cs_write_reg(i, GPMC_CS_CONFIG7, 0);
}
}
}
static int omap_gpmc_context_notifier(struct notifier_block *nb,
unsigned long cmd, void *v)
{
struct gpmc_device *gpmc;
gpmc = container_of(nb, struct gpmc_device, nb);
if (gpmc->is_suspended || pm_runtime_suspended(gpmc->dev))
return NOTIFY_OK;
switch (cmd) {
case CPU_CLUSTER_PM_ENTER:
omap3_gpmc_save_context(gpmc);
break;
case CPU_CLUSTER_PM_ENTER_FAILED: /* No need to restore context */
break;
case CPU_CLUSTER_PM_EXIT:
omap3_gpmc_restore_context(gpmc);
break;
}
return NOTIFY_OK;
}
static int gpmc_probe(struct platform_device *pdev)
{
int rc;
@ -2472,6 +2576,9 @@ static int gpmc_probe(struct platform_device *pdev)
gpmc_probe_dt_children(pdev);
gpmc->nb.notifier_call = omap_gpmc_context_notifier;
cpu_pm_register_notifier(&gpmc->nb);
return 0;
gpio_init_failed:
@ -2486,6 +2593,7 @@ static int gpmc_remove(struct platform_device *pdev)
{
struct gpmc_device *gpmc = platform_get_drvdata(pdev);
cpu_pm_unregister_notifier(&gpmc->nb);
gpmc_free_irq(gpmc);
gpmc_mem_exit();
pm_runtime_put_sync(&pdev->dev);
@ -2497,15 +2605,23 @@ static int gpmc_remove(struct platform_device *pdev)
#ifdef CONFIG_PM_SLEEP
static int gpmc_suspend(struct device *dev)
{
omap3_gpmc_save_context();
struct gpmc_device *gpmc = dev_get_drvdata(dev);
omap3_gpmc_save_context(gpmc);
pm_runtime_put_sync(dev);
gpmc->is_suspended = 1;
return 0;
}
static int gpmc_resume(struct device *dev)
{
struct gpmc_device *gpmc = dev_get_drvdata(dev);
pm_runtime_get_sync(dev);
omap3_gpmc_restore_context();
omap3_gpmc_restore_context(gpmc);
gpmc->is_suspended = 0;
return 0;
}
#endif
@ -2527,74 +2643,3 @@ static __init int gpmc_init(void)
return platform_driver_register(&gpmc_driver);
}
postcore_initcall(gpmc_init);
static struct omap3_gpmc_regs gpmc_context;
void omap3_gpmc_save_context(void)
{
int i;
if (!gpmc_base)
return;
gpmc_context.sysconfig = gpmc_read_reg(GPMC_SYSCONFIG);
gpmc_context.irqenable = gpmc_read_reg(GPMC_IRQENABLE);
gpmc_context.timeout_ctrl = gpmc_read_reg(GPMC_TIMEOUT_CONTROL);
gpmc_context.config = gpmc_read_reg(GPMC_CONFIG);
gpmc_context.prefetch_config1 = gpmc_read_reg(GPMC_PREFETCH_CONFIG1);
gpmc_context.prefetch_config2 = gpmc_read_reg(GPMC_PREFETCH_CONFIG2);
gpmc_context.prefetch_control = gpmc_read_reg(GPMC_PREFETCH_CONTROL);
for (i = 0; i < gpmc_cs_num; i++) {
gpmc_context.cs_context[i].is_valid = gpmc_cs_mem_enabled(i);
if (gpmc_context.cs_context[i].is_valid) {
gpmc_context.cs_context[i].config1 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG1);
gpmc_context.cs_context[i].config2 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG2);
gpmc_context.cs_context[i].config3 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG3);
gpmc_context.cs_context[i].config4 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG4);
gpmc_context.cs_context[i].config5 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG5);
gpmc_context.cs_context[i].config6 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG6);
gpmc_context.cs_context[i].config7 =
gpmc_cs_read_reg(i, GPMC_CS_CONFIG7);
}
}
}
void omap3_gpmc_restore_context(void)
{
int i;
if (!gpmc_base)
return;
gpmc_write_reg(GPMC_SYSCONFIG, gpmc_context.sysconfig);
gpmc_write_reg(GPMC_IRQENABLE, gpmc_context.irqenable);
gpmc_write_reg(GPMC_TIMEOUT_CONTROL, gpmc_context.timeout_ctrl);
gpmc_write_reg(GPMC_CONFIG, gpmc_context.config);
gpmc_write_reg(GPMC_PREFETCH_CONFIG1, gpmc_context.prefetch_config1);
gpmc_write_reg(GPMC_PREFETCH_CONFIG2, gpmc_context.prefetch_config2);
gpmc_write_reg(GPMC_PREFETCH_CONTROL, gpmc_context.prefetch_control);
for (i = 0; i < gpmc_cs_num; i++) {
if (gpmc_context.cs_context[i].is_valid) {
gpmc_cs_write_reg(i, GPMC_CS_CONFIG1,
gpmc_context.cs_context[i].config1);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG2,
gpmc_context.cs_context[i].config2);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG3,
gpmc_context.cs_context[i].config3);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG4,
gpmc_context.cs_context[i].config4);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG5,
gpmc_context.cs_context[i].config5);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG6,
gpmc_context.cs_context[i].config6);
gpmc_cs_write_reg(i, GPMC_CS_CONFIG7,
gpmc_context.cs_context[i].config7);
}
}
}

3
include/linux/omap-gpmc.h
View File

@ -81,9 +81,6 @@ extern int gpmc_configure(int cmd, int wval);
extern void gpmc_read_settings_dt(struct device_node *np,
struct gpmc_settings *p);
extern void omap3_gpmc_save_context(void);
extern void omap3_gpmc_restore_context(void);
struct gpmc_timings;
struct omap_nand_platform_data;
struct omap_onenand_platform_data;