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Merge branch 'renesas-soc-core' into renesas-soc 

* renesas-soc-core:
  ARM: shmobile: soc-core: add R-mobile PM domain common APIs
  ARM: mach-shmobile: Convert sh_clk_mstp32_register to sh_clk_mstp_register
  ARM: shmobile: add common DMAEngine definitions
  ARM: shmobile: add common extra gpio functions

Conflicts:
	arch/arm/mach-shmobile/clock-r8a7740.c
This commit is contained in:
Rafael J. Wysocki 2012-07-11 23:01:33 +02:00
parent 31400bb56c 8f45b112fc
commit 992c91eeca
11 changed files with 334 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/mach-shmobile/Makefile
View File

@ -39,6 +39,7 @@ obj-$(CONFIG_ARCH_R8A7740) += entry-intc.o
# PM objects
obj-$(CONFIG_SUSPEND) += suspend.o
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_ARCH_SHMOBILE) += pm-rmobile.o
obj-$(CONFIG_ARCH_SH7372) += pm-sh7372.o sleep-sh7372.o
obj-$(CONFIG_ARCH_R8A7779) += pm-r8a7779.o

2
arch/arm/mach-shmobile/clock-r8a7740.c
View File

@ -628,7 +628,7 @@ void __init r8a7740_clock_init(u8 md_ck)
DIV6_REPARENT_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
ret = clk_register(late_main_clks[k]);

2
arch/arm/mach-shmobile/clock-r8a7779.c
View File

@ -162,7 +162,7 @@ void __init r8a7779_clock_init(void)
ret = sh_clk_div4_register(div4_clks, DIV4_NR, &div4_table);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
ret = clk_register(late_main_clks[k]);

2
arch/arm/mach-shmobile/clock-sh7367.c
View File

@ -344,7 +344,7 @@ void __init sh7367_clock_init(void)
ret = sh_clk_div6_register(div6_clks, DIV6_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
clkdev_add_table(lookups, ARRAY_SIZE(lookups));

2
arch/arm/mach-shmobile/clock-sh7372.c
View File

@ -704,7 +704,7 @@ void __init sh7372_clock_init(void)
ret = sh_clk_div6_reparent_register(div6_reparent_clks, DIV6_REPARENT_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
ret = clk_register(late_main_clks[k]);

2
arch/arm/mach-shmobile/clock-sh7377.c
View File

@ -355,7 +355,7 @@ void __init sh7377_clock_init(void)
ret = sh_clk_div6_register(div6_clks, DIV6_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
clkdev_add_table(lookups, ARRAY_SIZE(lookups));

2
arch/arm/mach-shmobile/clock-sh73a0.c
View File

@ -614,7 +614,7 @@ void __init sh73a0_clock_init(void)
ret = sh_clk_div6_reparent_register(div6_clks, DIV6_NR);
if (!ret)
ret = sh_clk_mstp32_register(mstp_clks, MSTP_NR);
ret = sh_clk_mstp_register(mstp_clks, MSTP_NR);
for (k = 0; !ret && (k < ARRAY_SIZE(late_main_clks)); k++)
ret = clk_register(late_main_clks[k]);

84
arch/arm/mach-shmobile/include/mach/dma-register.h Normal file
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@ -0,0 +1,84 @@
/*
* SH-ARM CPU-specific DMA definitions, used by both DMA drivers
*
* Copyright (C) 2012 Renesas Solutions Corp
*
* Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* Based on arch/sh/include/cpu-sh4/cpu/dma-register.h
* Copyright (C) 2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef DMA_REGISTER_H
#define DMA_REGISTER_H
/*
* Direct Memory Access Controller
*/
/* Transmit sizes and respective CHCR register values */
enum {
XMIT_SZ_8BIT = 0,
XMIT_SZ_16BIT = 1,
XMIT_SZ_32BIT = 2,
XMIT_SZ_64BIT = 7,
XMIT_SZ_128BIT = 3,
XMIT_SZ_256BIT = 4,
XMIT_SZ_512BIT = 5,
};
/* log2(size / 8) - used to calculate number of transfers */
static const unsigned int dma_ts_shift[] = {
[XMIT_SZ_8BIT] = 0,
[XMIT_SZ_16BIT] = 1,
[XMIT_SZ_32BIT] = 2,
[XMIT_SZ_64BIT] = 3,
[XMIT_SZ_128BIT] = 4,
[XMIT_SZ_256BIT] = 5,
[XMIT_SZ_512BIT] = 6,
};
#define TS_LOW_BIT 0x3 /* --xx */
#define TS_HI_BIT 0xc /* xx-- */
#define TS_LOW_SHIFT (3)
#define TS_HI_SHIFT (20 - 2) /* 2 bits for shifted low TS */
#define TS_INDEX2VAL(i) \
((((i) & TS_LOW_BIT) << TS_LOW_SHIFT) |\
(((i) & TS_HI_BIT) << TS_HI_SHIFT))
#define CHCR_TX(xmit_sz) (DM_FIX | SM_INC | 0x800 | TS_INDEX2VAL((xmit_sz)))
#define CHCR_RX(xmit_sz) (DM_INC | SM_FIX | 0x800 | TS_INDEX2VAL((xmit_sz)))
/*
* USB High-Speed DMAC
*/
/* Transmit sizes and respective CHCR register values */
enum {
USBTS_XMIT_SZ_8BYTE = 0,
USBTS_XMIT_SZ_16BYTE = 1,
USBTS_XMIT_SZ_32BYTE = 2,
};
/* log2(size / 8) - used to calculate number of transfers */
static const unsigned int dma_usbts_shift[] = {
[USBTS_XMIT_SZ_8BYTE] = 3,
[USBTS_XMIT_SZ_16BYTE] = 4,
[USBTS_XMIT_SZ_32BYTE] = 5,
};
#define USBTS_LOW_BIT 0x3 /* --xx */
#define USBTS_HI_BIT 0x0 /* ---- */
#define USBTS_LOW_SHIFT 6
#define USBTS_HI_SHIFT 0
#define USBTS_INDEX2VAL(i) (((i) & 3) << 6)
#endif /* DMA_REGISTER_H */

32
arch/arm/mach-shmobile/include/mach/gpio.h
View File

@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/sh_pfc.h>
#include <linux/io.h>
#ifdef CONFIG_GPIOLIB
@ -27,4 +28,35 @@ static inline int irq_to_gpio(unsigned int irq)
#endif /* CONFIG_GPIOLIB */
/*
* FIXME !!
*
* current gpio frame work doesn't have
* the method to control only pull up/down/free.
* this function should be replaced by correct gpio function
*/
static inline void __init gpio_direction_none(u32 addr)
{
__raw_writeb(0x00, addr);
}
static inline void __init gpio_request_pullup(u32 addr)
{
u8 data = __raw_readb(addr);
data &= 0x0F;
data |= 0xC0;
__raw_writeb(data, addr);
}
static inline void __init gpio_request_pulldown(u32 addr)
{
u8 data = __raw_readb(addr);
data &= 0x0F;
data |= 0xA0;
__raw_writeb(data, addr);
}
#endif /* __ASM_ARCH_GPIO_H */

44
arch/arm/mach-shmobile/include/mach/pm-rmobile.h Normal file
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@ -0,0 +1,44 @@
/*
* Copyright (C) 2012 Renesas Solutions Corp.
*
* Kuninori Morimoto <morimoto.kuninori@renesas.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef PM_RMOBILE_H
#define PM_RMOBILE_H
#include <linux/pm_domain.h>
struct platform_device;
struct rmobile_pm_domain {
struct generic_pm_domain genpd;
struct dev_power_governor *gov;
int (*suspend)(void);
void (*resume)(void);
unsigned int bit_shift;
bool no_debug;
};
static inline
struct rmobile_pm_domain *to_rmobile_pd(struct generic_pm_domain *d)
{
return container_of(d, struct rmobile_pm_domain, genpd);
}
#ifdef CONFIG_PM
extern void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd);
extern void rmobile_add_device_to_domain(struct rmobile_pm_domain *rmobile_pd,
struct platform_device *pdev);
extern void rmobile_pm_add_subdomain(struct rmobile_pm_domain *rmobile_pd,
struct rmobile_pm_domain *rmobile_sd);
#else
#define rmobile_init_pm_domain(pd) do { } while (0)
#define rmobile_add_device_to_domain(pd, pdev) do { } while (0)
#define rmobile_pm_add_subdomain(pd, sd) do { } while (0)
#endif /* CONFIG_PM */
#endif /* PM_RMOBILE_H */

167
arch/arm/mach-shmobile/pm-rmobile.c Normal file
View File

@ -0,0 +1,167 @@
/*
* rmobile power management support
*
* Copyright (C) 2012 Renesas Solutions Corp.
* Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* based on pm-sh7372.c
* Copyright (C) 2011 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/console.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/pm_clock.h>
#include <asm/io.h>
#include <mach/pm-rmobile.h>
/* SYSC */
#define SPDCR 0xe6180008
#define SWUCR 0xe6180014
#define PSTR 0xe6180080
#define PSTR_RETRIES 100
#define PSTR_DELAY_US 10
#ifdef CONFIG_PM
static int rmobile_pd_power_down(struct generic_pm_domain *genpd)
{
struct rmobile_pm_domain *rmobile_pd = to_rmobile_pd(genpd);
unsigned int mask = 1 << rmobile_pd->bit_shift;
if (rmobile_pd->suspend) {
int ret = rmobile_pd->suspend();
if (ret)
return ret;
}
if (__raw_readl(PSTR) & mask) {
unsigned int retry_count;
__raw_writel(mask, SPDCR);
for (retry_count = PSTR_RETRIES; retry_count; retry_count--) {
if (!(__raw_readl(SPDCR) & mask))
break;
cpu_relax();
}
}
if (!rmobile_pd->no_debug)
pr_debug("%s: Power off, 0x%08x -> PSTR = 0x%08x\n",
genpd->name, mask, __raw_readl(PSTR));
return 0;
}
static int __rmobile_pd_power_up(struct rmobile_pm_domain *rmobile_pd,
bool do_resume)
{
unsigned int mask = 1 << rmobile_pd->bit_shift;
unsigned int retry_count;
int ret = 0;
if (__raw_readl(PSTR) & mask)
goto out;
__raw_writel(mask, SWUCR);
for (retry_count = 2 * PSTR_RETRIES; retry_count; retry_count--) {
if (!(__raw_readl(SWUCR) & mask))
break;
if (retry_count > PSTR_RETRIES)
udelay(PSTR_DELAY_US);
else
cpu_relax();
}
if (!retry_count)
ret = -EIO;
if (!rmobile_pd->no_debug)
pr_debug("%s: Power on, 0x%08x -> PSTR = 0x%08x\n",
rmobile_pd->genpd.name, mask, __raw_readl(PSTR));
out:
if (ret == 0 && rmobile_pd->resume && do_resume)
rmobile_pd->resume();
return ret;
}
static int rmobile_pd_power_up(struct generic_pm_domain *genpd)
{
return __rmobile_pd_power_up(to_rmobile_pd(genpd), true);
}
static bool rmobile_pd_active_wakeup(struct device *dev)
{
bool (*active_wakeup)(struct device *dev);
active_wakeup = dev_gpd_data(dev)->ops.active_wakeup;
return active_wakeup ? active_wakeup(dev) : true;
}
static int rmobile_pd_stop_dev(struct device *dev)
{
int (*stop)(struct device *dev);
stop = dev_gpd_data(dev)->ops.stop;
if (stop) {
int ret = stop(dev);
if (ret)
return ret;
}
return pm_clk_suspend(dev);
}
static int rmobile_pd_start_dev(struct device *dev)
{
int (*start)(struct device *dev);
int ret;
ret = pm_clk_resume(dev);
if (ret)
return ret;
start = dev_gpd_data(dev)->ops.start;
if (start)
ret = start(dev);
return ret;
}
void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd)
{
struct generic_pm_domain *genpd = &rmobile_pd->genpd;
struct dev_power_governor *gov = rmobile_pd->gov;
pm_genpd_init(genpd, gov ? : &simple_qos_governor, false);
genpd->dev_ops.stop = rmobile_pd_stop_dev;
genpd->dev_ops.start = rmobile_pd_start_dev;
genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup;
genpd->dev_irq_safe = true;
genpd->power_off = rmobile_pd_power_down;
genpd->power_on = rmobile_pd_power_up;
__rmobile_pd_power_up(rmobile_pd, false);
}
void rmobile_add_device_to_domain(struct rmobile_pm_domain *rmobile_pd,
struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
pm_genpd_add_device(&rmobile_pd->genpd, dev);
if (pm_clk_no_clocks(dev))
pm_clk_add(dev, NULL);
}
void rmobile_pm_add_subdomain(struct rmobile_pm_domain *rmobile_pd,
struct rmobile_pm_domain *rmobile_sd)
{
pm_genpd_add_subdomain(&rmobile_pd->genpd, &rmobile_sd->genpd);
}
#endif /* CONFIG_PM */