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Message-ID: <20080420083106.GA344@doriath.ww600.siemens.net>
Date: Sun, 20 Apr 2008 12:31:06 +0400
From: Dmitry Baryshkov <dbaryshkov@...il.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org,
Haavard Skinnemoen <haavard.skinnemoen@...el.com>,
Russell King <rmk+lkml@....linux.org.uk>,
Paul Mundt <lethal@...ux-sh.org>,
pHilipp Zabel <philipp.zabel@...il.com>,
Pavel Machek <pavel@....cz>, tony@...mide.com, paul@...an.com,
David Brownell <david-b@...bell.net>
Subject: [PATCH 4/5] Clocklib: support ARM pxa sub-arch.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@...il.com>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-pxa/clock.c | 147 ++++++++++++------------------------
arch/arm/mach-pxa/clock.h | 63 +++++++---------
arch/arm/mach-pxa/pxa25x.c | 79 ++++++++++++-------
arch/arm/mach-pxa/pxa27x.c | 74 ++++++++++--------
arch/arm/mach-pxa/pxa3xx.c | 182 ++++++++++++++++++++++++-------------------
6 files changed, 271 insertions(+), 275 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 113ead3..7ade486 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -404,6 +404,7 @@ config ARCH_PXA
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
select TICK_ONESHOT
+ select HAVE_CLOCK_LIB
help
Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
diff --git a/arch/arm/mach-pxa/clock.c b/arch/arm/mach-pxa/clock.c
index e97dc59..74fedfb 100644
--- a/arch/arm/mach-pxa/clock.c
+++ b/arch/arm/mach-pxa/clock.c
@@ -8,6 +8,7 @@
#include <linux/err.h>
#include <linux/string.h>
#include <linux/clk.h>
+#include <linux/clklib.h>
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
@@ -20,135 +21,83 @@
#include "generic.h"
#include "clock.h"
-static LIST_HEAD(clocks);
-static DEFINE_MUTEX(clocks_mutex);
-static DEFINE_SPINLOCK(clocks_lock);
-
-static struct clk *clk_lookup(struct device *dev, const char *id)
+static int clk_gpio11_set_mode(struct clk *clk, bool enable)
{
- struct clk *p;
-
- list_for_each_entry(p, &clocks, node)
- if (strcmp(id, p->name) == 0 && p->dev == dev)
- return p;
+ if (enable)
+ pxa_gpio_mode(GPIO11_3_6MHz_MD);
- return NULL;
-}
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
- struct clk *p, *clk = ERR_PTR(-ENOENT);
-
- mutex_lock(&clocks_mutex);
- p = clk_lookup(dev, id);
- if (!p)
- p = clk_lookup(NULL, id);
- if (p)
- clk = p;
- mutex_unlock(&clocks_mutex);
-
- return clk;
+ return 0;
}
-EXPORT_SYMBOL(clk_get);
-void clk_put(struct clk *clk)
+static unsigned long clk_gpio11_get_rate(struct clk *clk)
{
+ return 3686400;
}
-EXPORT_SYMBOL(clk_put);
-int clk_enable(struct clk *clk)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&clocks_lock, flags);
- if (clk->enabled++ == 0)
- clk->ops->enable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
-
- if (clk->delay)
- udelay(clk->delay);
+static const struct clk_ops clk_gpio11_ops = {
+ .get_rate = clk_gpio11_get_rate,
+ .set_mode = clk_gpio11_set_mode,
+};
- return 0;
-}
-EXPORT_SYMBOL(clk_enable);
+static struct clk clk_gpio11 = {
+ /* For backwards compatibility untill sa1111 and boards are fixed */
+ .name = "GPIO27_CLK",
+ .ops = &clk_gpio11_ops,
+ .owner = THIS_MODULE,
+};
-void clk_disable(struct clk *clk)
+int clk_cken_set_mode(struct clk *clk, bool enable)
{
- unsigned long flags;
+ struct clk_cken *cclk = container_of(clk, struct clk_cken, clk);
+ int cken = cclk->cken;
- WARN_ON(clk->enabled == 0);
+ if (enable) {
+ CKEN |= 1 << cken;
+ if (cclk->delay)
+ udelay(cclk->delay);
+ } else
+ CKEN &= ~(1 << cken);
- spin_lock_irqsave(&clocks_lock, flags);
- if (--clk->enabled == 0)
- clk->ops->disable(clk);
- spin_unlock_irqrestore(&clocks_lock, flags);
+ return 0;
}
-EXPORT_SYMBOL(clk_disable);
-unsigned long clk_get_rate(struct clk *clk)
+unsigned long clk_cken_get_rate(struct clk *clk)
{
- unsigned long rate;
-
- rate = clk->rate;
- if (clk->ops->getrate)
- rate = clk->ops->getrate(clk);
+ struct clk_cken *cclk = container_of(clk, struct clk_cken, clk);
- return rate;
+ return cclk->rate;
}
-EXPORT_SYMBOL(clk_get_rate);
+const struct clk_ops clk_cken_ops = {
+ .set_mode = clk_cken_set_mode,
+ .get_rate = clk_cken_get_rate,
+};
-static void clk_gpio27_enable(struct clk *clk)
+static int clk_dev_can_get(struct clk *clk, struct device *dev)
{
- pxa_gpio_mode(GPIO11_3_6MHz_MD);
-}
+ struct clk_function *cfunc = container_of(clk, struct clk_function, clk);
-static void clk_gpio27_disable(struct clk *clk)
-{
+ return (dev == cfunc->priv);
}
-static const struct clkops clk_gpio27_ops = {
- .enable = clk_gpio27_enable,
- .disable = clk_gpio27_disable,
-};
-
-
-void clk_cken_enable(struct clk *clk)
+static int clk_dev_format(struct clk *clk, struct seq_file *s)
{
- CKEN |= 1 << clk->cken;
-}
+ struct clk_function *cfunc = container_of(clk, struct clk_function, clk);
-void clk_cken_disable(struct clk *clk)
-{
- CKEN &= ~(1 << clk->cken);
-}
+ BUG_ON(!cfunc->priv);
-const struct clkops clk_cken_ops = {
- .enable = clk_cken_enable,
- .disable = clk_cken_disable,
-};
+ seq_puts(s, " for device ");
+ seq_puts(s, ((struct device *)cfunc->priv)->bus_id);
+ return 0;
+}
-static struct clk common_clks[] = {
- {
- .name = "GPIO27_CLK",
- .ops = &clk_gpio27_ops,
- .rate = 3686400,
- },
+const struct clk_ops clk_dev_ops = {
+ .can_get = clk_dev_can_get,
+ .format = clk_dev_format,
};
-void clks_register(struct clk *clks, size_t num)
-{
- int i;
-
- mutex_lock(&clocks_mutex);
- for (i = 0; i < num; i++)
- list_add(&clks[i].node, &clocks);
- mutex_unlock(&clocks_mutex);
-}
-
static int __init clk_init(void)
{
- clks_register(common_clks, ARRAY_SIZE(common_clks));
- return 0;
+ return clk_register(&clk_gpio11);
}
arch_initcall(clk_init);
diff --git a/arch/arm/mach-pxa/clock.h b/arch/arm/mach-pxa/clock.h
index bc6b77e..976cf8a 100644
--- a/arch/arm/mach-pxa/clock.h
+++ b/arch/arm/mach-pxa/clock.h
@@ -1,43 +1,36 @@
-struct clk;
+#include <linux/clk.h>
+#include <linux/clklib.h>
+#include <linux/seq_file.h>
-struct clkops {
- void (*enable)(struct clk *);
- void (*disable)(struct clk *);
- unsigned long (*getrate)(struct clk *);
-};
+extern int clk_cken_set_mode(struct clk *clk, bool enable);
+extern unsigned long clk_cken_get_rate(struct clk *clk);
+extern const struct clk_ops clk_cken_ops;
-struct clk {
- struct list_head node;
- const char *name;
- struct device *dev;
- const struct clkops *ops;
- unsigned long rate;
- unsigned int cken;
- unsigned int delay;
- unsigned int enabled;
+struct clk_cken {
+ unsigned int cken;
+ unsigned long rate;
+ int delay;
+ struct clk clk;
};
-#define INIT_CKEN(_name, _cken, _rate, _delay, _dev) \
- { \
- .name = _name, \
- .dev = _dev, \
- .ops = &clk_cken_ops, \
+#define INIT_CKEN(_name, _cken, _rate, _delay) \
+ &(struct clk_cken) { \
+ .cken = CKEN_##_cken, \
.rate = _rate, \
- .cken = CKEN_##_cken, \
.delay = _delay, \
- }
-
-#define INIT_CK(_name, _cken, _ops, _dev) \
- { \
- .name = _name, \
- .dev = _dev, \
- .ops = _ops, \
- .cken = CKEN_##_cken, \
- }
-
-extern const struct clkops clk_cken_ops;
+ .clk = { \
+ .name = _name, \
+ .ops = &clk_cken_ops, \
+ }, \
+ }.clk
-void clk_cken_enable(struct clk *clk);
-void clk_cken_disable(struct clk *clk);
+#define INIT_CK(_name, _cken, _ops) \
+ &(struct clk_cken) { \
+ .cken = CKEN_##_cken, \
+ .clk = { \
+ .name = _name, \
+ .ops = _ops, \
+ }, \
+ }.clk
-void clks_register(struct clk *clks, size_t num);
+extern const struct clk_ops clk_dev_ops;
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index e802c79..9f25ca3 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -102,10 +102,9 @@ static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk)
return pxa25x_get_memclk_frequency_10khz() * 10000;
}
-static const struct clkops clk_pxa25x_lcd_ops = {
- .enable = clk_cken_enable,
- .disable = clk_cken_disable,
- .getrate = clk_pxa25x_lcd_getrate,
+static const struct clk_ops clk_pxa25x_lcd_ops = {
+ .set_mode = clk_cken_set_mode,
+ .get_rate = clk_pxa25x_lcd_getrate,
};
/*
@@ -113,31 +112,46 @@ static const struct clkops clk_pxa25x_lcd_ops = {
* 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz
* 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly)
*/
-static struct clk pxa25x_hwuart_clk =
- INIT_CKEN("UARTCLK", HWUART, 14745600, 1, &pxa_device_hwuart.dev)
-;
-
-static struct clk pxa25x_clks[] = {
- INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev),
- INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev),
- INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev),
- INIT_CKEN("UARTCLK", STUART, 14745600, 1, NULL),
- INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev),
- INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev),
- INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev),
-
- INIT_CKEN("SSPCLK", SSP, 3686400, 0, &pxa25x_device_ssp.dev),
- INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev),
- INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev),
- INIT_CKEN("PWMCLK", PWM0, 3686400, 0, &pxa25x_device_pwm0.dev),
- INIT_CKEN("PWMCLK", PWM1, 3686400, 0, &pxa25x_device_pwm1.dev),
-
- INIT_CKEN("AC97CLK", AC97, 24576000, 0, NULL),
+static struct clk *pxa25x_hwuart_cken_clk =
+ INIT_CKEN("HWUARTCLK", HWUART, 14745600, 1);
+
+static struct clk_function pxa25x_hwuart_func =
+ CLK_FUNC("HWUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_hwuart.dev);
+
+
+static struct clk *pxa25x_clks[] = {
+ INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops),
+ INIT_CKEN("FFUARTCLK", FFUART, 14745600, 1),
+ INIT_CKEN("BTUARTCLK", BTUART, 14745600, 1),
+ INIT_CKEN("STUARTCLK", STUART, 14745600, 1),
+ INIT_CKEN("UDCCLK", USB, 47923000, 5),
+ INIT_CKEN("PXAMMCCLK", MMC, 19169000, 0),
+ INIT_CKEN("I2CCLK", I2C, 31949000, 0),
+
+ INIT_CKEN("SSP_CLK", SSP, 3686400, 0),
+ INIT_CKEN("NSSPCLK", NSSP, 3686400, 0),
+ INIT_CKEN("ASSPCLK", ASSP, 3686400, 0),
+ INIT_CKEN("PWM0CLK", PWM0, 3686400, 0),
+ INIT_CKEN("PWM1CLK", PWM1, 3686400, 0),
+
+ INIT_CKEN("AC97CLK", AC97, 24576000, 0),
/*
- INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL),
+ INIT_CKEN("I2SCLK", I2S, 14745600, 0),
*/
- INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL),
+ INIT_CKEN("FICPCLK", FICP, 47923000, 0),
+};
+
+static struct clk_function pxa25x_clk_funcs[] = {
+ CLK_FUNC("FFUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_ffuart.dev),
+ CLK_FUNC("BTUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_btuart.dev),
+ CLK_FUNC("STUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_stuart.dev),
+ CLK_FUNC("PXAMMCCLK", "MMCCLK", &clk_dev_ops, &pxa_device_mci.dev),
+ CLK_FUNC("SSP_CLK", "SSPCLK", &clk_dev_ops, &pxa25x_device_ssp.dev),
+ CLK_FUNC("NSSPCLK", "SSPCLK", &clk_dev_ops, &pxa25x_device_nssp.dev),
+ CLK_FUNC("ASSPCLK", "SSPCLK", &clk_dev_ops, &pxa25x_device_assp.dev),
+ CLK_FUNC("PWM0CLK", "PWMCLK", &clk_dev_ops, &pxa25x_device_pwm0.dev),
+ CLK_FUNC("PWM1CLK", "PWMCLK", &clk_dev_ops, &pxa25x_device_pwm1.dev),
};
#ifdef CONFIG_PM
@@ -279,17 +293,22 @@ static struct sys_device pxa25x_sysdev[] = {
.cls = &pxa_gpio_sysclass,
},
};
-
static int __init pxa25x_init(void)
{
int i, ret = 0;
/* Only add HWUART for PXA255/26x; PXA210/250/27x do not have it. */
- if (cpu_is_pxa25x())
- clks_register(&pxa25x_hwuart_clk, 1);
+ if (cpu_is_pxa25x()) {
+ ret = clk_register(pxa25x_hwuart_cken_clk);
+ if (!ret)
+ ret = clk_alloc_function(
+ pxa25x_hwuart_func.parent,
+ &pxa25x_hwuart_func.clk);
+ }
if (cpu_is_pxa21x() || cpu_is_pxa25x()) {
- clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
+ ret = clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks));
+ ret = clk_alloc_functions(pxa25x_clk_funcs, ARRAY_SIZE(pxa25x_clk_funcs));
if ((ret = pxa_init_dma(16)))
return ret;
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 3291d6f..ecfe887 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -130,48 +130,59 @@ static unsigned long clk_pxa27x_lcd_getrate(struct clk *clk)
return pxa27x_get_lcdclk_frequency_10khz() * 10000;
}
-static const struct clkops clk_pxa27x_lcd_ops = {
- .enable = clk_cken_enable,
- .disable = clk_cken_disable,
- .getrate = clk_pxa27x_lcd_getrate,
+static const struct clk_ops clk_pxa27x_lcd_ops = {
+ .set_mode = clk_cken_set_mode,
+ .get_rate = clk_pxa27x_lcd_getrate,
};
-static struct clk pxa27x_clks[] = {
- INIT_CK("LCDCLK", LCD, &clk_pxa27x_lcd_ops, &pxa_device_fb.dev),
- INIT_CK("CAMCLK", CAMERA, &clk_pxa27x_lcd_ops, NULL),
+static struct clk *pxa27x_clks[] = {
+ INIT_CK("LCDCLK", LCD, &clk_pxa27x_lcd_ops),
+ INIT_CK("CAMCLK", CAMERA, &clk_pxa27x_lcd_ops),
- INIT_CKEN("UARTCLK", FFUART, 14857000, 1, &pxa_device_ffuart.dev),
- INIT_CKEN("UARTCLK", BTUART, 14857000, 1, &pxa_device_btuart.dev),
- INIT_CKEN("UARTCLK", STUART, 14857000, 1, NULL),
+ INIT_CKEN("FFUARTCLK", FFUART, 14857000, 1),
+ INIT_CKEN("BTUARTCLK", BTUART, 14857000, 1),
+ INIT_CKEN("STUARTCLK", STUART, 14857000, 1),
- INIT_CKEN("I2SCLK", I2S, 14682000, 0, &pxa_device_i2s.dev),
- INIT_CKEN("I2CCLK", I2C, 32842000, 0, &pxa_device_i2c.dev),
- INIT_CKEN("UDCCLK", USB, 48000000, 5, &pxa_device_udc.dev),
- INIT_CKEN("MMCCLK", MMC, 19500000, 0, &pxa_device_mci.dev),
- INIT_CKEN("FICPCLK", FICP, 48000000, 0, &pxa_device_ficp.dev),
+ INIT_CKEN("I2SCLK", I2S, 14682000, 0),
+ INIT_CKEN("I2CCLK", I2C, 32842000, 0),
+ INIT_CKEN("UDCCLK", USB, 48000000, 5),
+ INIT_CKEN("PXAMMCCLK", MMC, 19500000, 0),
+ INIT_CKEN("FICPCLK", FICP, 48000000, 0),
- INIT_CKEN("USBCLK", USBHOST, 48000000, 0, &pxa27x_device_ohci.dev),
- INIT_CKEN("I2CCLK", PWRI2C, 13000000, 0, &pxa27x_device_i2c_power.dev),
- INIT_CKEN("KBDCLK", KEYPAD, 32768, 0, &pxa27x_device_keypad.dev),
+ INIT_CKEN("USBCLK", USBHOST, 48000000, 0),
+ INIT_CKEN("I2CCLK", PWRI2C, 13000000, 0),
+ INIT_CKEN("KBDCLK", KEYPAD, 32768, 0),
- INIT_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev),
- INIT_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
- INIT_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
- INIT_CKEN("PWMCLK", PWM0, 13000000, 0, &pxa27x_device_pwm0.dev),
- INIT_CKEN("PWMCLK", PWM1, 13000000, 0, &pxa27x_device_pwm1.dev),
+ INIT_CKEN("SSP1CLK", SSP1, 13000000, 0),
+ INIT_CKEN("SSP2CLK", SSP2, 13000000, 0),
+ INIT_CKEN("SSP3CLK", SSP3, 13000000, 0),
+ INIT_CKEN("PWM0CLK", PWM0, 13000000, 0),
+ INIT_CKEN("PWM1CLK", PWM1, 13000000, 0),
- INIT_CKEN("AC97CLK", AC97, 24576000, 0, NULL),
- INIT_CKEN("AC97CONFCLK", AC97CONF, 24576000, 0, NULL),
+ INIT_CKEN("AC97CLK", AC97, 24576000, 0),
+ INIT_CKEN("AC97CONFCLK", AC97CONF, 24576000, 0),
/*
- INIT_CKEN("MSLCLK", MSL, 48000000, 0, NULL),
- INIT_CKEN("USIMCLK", USIM, 48000000, 0, NULL),
- INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0, NULL),
- INIT_CKEN("IMCLK", IM, 0, 0, NULL),
- INIT_CKEN("MEMCLK", MEMC, 0, 0, NULL),
+ INIT_CKEN("MSLCLK", MSL, 48000000, 0),
+ INIT_CKEN("USIMCLK", USIM, 48000000, 0),
+ INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0),
+ INIT_CKEN("IMCLK", IM, 0, 0),
+ INIT_CKEN("MEMCLK", MEMC, 0, 0),
*/
};
+static struct clk_function pxa27x_clk_funcs[] = {
+ CLK_FUNC("FFUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_ffuart.dev),
+ CLK_FUNC("BTUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_btuart.dev),
+ CLK_FUNC("STUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_stuart.dev),
+ CLK_FUNC("PXAMMCCLK", "MMCCLK", &clk_dev_ops, &pxa_device_mci.dev),
+ CLK_FUNC("SSP1CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp1.dev),
+ CLK_FUNC("SSP2CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp2.dev),
+ CLK_FUNC("SSP3CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp3.dev),
+ CLK_FUNC("PWM0CLK", "PWMCLK", &clk_dev_ops, &pxa27x_device_pwm0.dev),
+ CLK_FUNC("PWM1CLK", "PWMCLK", &clk_dev_ops, &pxa27x_device_pwm1.dev),
+};
+
#ifdef CONFIG_PM
#define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x
@@ -380,7 +391,8 @@ static int __init pxa27x_init(void)
int i, ret = 0;
if (cpu_is_pxa27x()) {
- clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));
+ ret = clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks));
+ ret = clk_alloc_functions(pxa27x_clk_funcs, ARRAY_SIZE(pxa27x_clk_funcs));
if ((ret = pxa_init_dma(32)))
return ret;
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 7c061af..cef6d80 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -20,6 +20,7 @@
#include <linux/platform_device.h>
#include <linux/irq.h>
#include <linux/io.h>
+#include <linux/delay.h>
#include <linux/sysdev.h>
#include <asm/hardware.h>
@@ -144,107 +145,127 @@ static unsigned long clk_pxa3xx_hsio_getrate(struct clk *clk)
return hsio_clk;
}
-static void clk_pxa3xx_cken_enable(struct clk *clk)
+static int clk_pxa3xx_cken_set_mode(struct clk *clk, bool enable)
{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA |= mask;
+ struct clk_cken *cclk = container_of(clk, struct clk_cken, clk);
+ int cken = cclk->cken;
+ unsigned long mask = 1ul << (cken & 0x1f);
+
+ if (cken < 32)
+ if (enable)
+ CKENA |= mask;
+ else
+ CKENA &= ~mask;
else
- CKENB |= mask;
-}
+ if (enable)
+ CKENB |= mask;
+ else
+ CKENB &= ~mask;
-static void clk_pxa3xx_cken_disable(struct clk *clk)
-{
- unsigned long mask = 1ul << (clk->cken & 0x1f);
-
- if (clk->cken < 32)
- CKENA &= ~mask;
- else
- CKENB &= ~mask;
+ return 0;
}
-static const struct clkops clk_pxa3xx_cken_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
+static const struct clk_ops clk_pxa3xx_cken_ops = {
+ .set_mode = clk_pxa3xx_cken_set_mode,
+ .get_rate = clk_cken_get_rate,
};
-static const struct clkops clk_pxa3xx_hsio_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_hsio_getrate,
+static const struct clk_ops clk_pxa3xx_hsio_ops = {
+ .set_mode = clk_pxa3xx_cken_set_mode,
+ .get_rate = clk_pxa3xx_hsio_getrate,
};
-static const struct clkops clk_pxa3xx_ac97_ops = {
- .enable = clk_pxa3xx_cken_enable,
- .disable = clk_pxa3xx_cken_disable,
- .getrate = clk_pxa3xx_ac97_getrate,
+static const struct clk_ops clk_pxa3xx_ac97_ops = {
+ .set_mode = clk_pxa3xx_cken_set_mode,
+ .get_rate = clk_pxa3xx_ac97_getrate,
};
-static void clk_pout_enable(struct clk *clk)
+static int clk_pout_set_mode(struct clk *clk, bool enable)
{
- OSCC |= OSCC_PEN;
-}
+ struct clk_cken *cclk = container_of(clk, struct clk_cken, clk);
+ if (enable) {
+ OSCC |= OSCC_PEN;
+ if (cclk->delay)
+ udelay(cclk->delay);
+ } else
+ OSCC &= ~OSCC_PEN;
-static void clk_pout_disable(struct clk *clk)
-{
- OSCC &= ~OSCC_PEN;
+ return 0;
}
-static const struct clkops clk_pout_ops = {
- .enable = clk_pout_enable,
- .disable = clk_pout_disable,
+static const struct clk_ops clk_pout_ops = {
+ .set_mode = clk_pout_set_mode,
+ .get_rate = clk_cken_get_rate,
};
-#define PXA3xx_CKEN(_name, _cken, _rate, _delay, _dev) \
- { \
- .name = _name, \
- .dev = _dev, \
- .ops = &clk_pxa3xx_cken_ops, \
+#define PXA3xx_CKEN(_name, _cken, _rate, _delay) \
+ &(struct clk_cken) { \
+ .clk = { \
+ .name = _name, \
+ .ops = &clk_pxa3xx_cken_ops, \
+ }, \
.rate = _rate, \
.cken = CKEN_##_cken, \
.delay = _delay, \
- }
-
-#define PXA3xx_CK(_name, _cken, _ops, _dev) \
- { \
- .name = _name, \
- .dev = _dev, \
- .ops = _ops, \
- .cken = CKEN_##_cken, \
- }
-
-static struct clk pxa3xx_clks[] = {
- {
- .name = "CLK_POUT",
- .ops = &clk_pout_ops,
+ }.clk
+
+#define PXA3xx_CK(_name, _cken, _ops) \
+ &(struct clk_cken) { \
+ .cken = CKEN_##_cken, \
+ .clk = { \
+ .name = _name, \
+ .ops = _ops, \
+ }, \
+ }.clk
+
+static struct clk *pxa3xx_clks[] = {
+ &(&(struct clk_cken) {
+ .clk = {
+ .name = "CLK_POUT",
+ .ops = &clk_pout_ops,
+ },
.rate = 13000000,
- .delay = 70,
- },
+ .delay = 70,
+ })->clk,
+
+ PXA3xx_CK("LCDCLK", LCD, &clk_pxa3xx_hsio_ops),
+ PXA3xx_CK("CAMCLK", CAMERA, &clk_pxa3xx_hsio_ops),
+ PXA3xx_CK("AC97CLK", AC97, &clk_pxa3xx_ac97_ops),
+
+ PXA3xx_CKEN("FFUARTCLK", FFUART, 14857000, 1),
+ PXA3xx_CKEN("BTUARTCLK", BTUART, 14857000, 1),
+ PXA3xx_CKEN("STUARTCLK", STUART, 14857000, 1),
+
+ PXA3xx_CKEN("I2CCLK", I2C, 32842000, 0),
+ PXA3xx_CKEN("UDCCLK", UDC, 48000000, 5),
+ PXA3xx_CKEN("USBCLK", USBH, 48000000, 0),
+ PXA3xx_CKEN("KBDCLK", KEYPAD, 32768, 0),
+
+ PXA3xx_CKEN("SSP1CLK", SSP1, 13000000, 0),
+ PXA3xx_CKEN("SSP2CLK", SSP2, 13000000, 0),
+ PXA3xx_CKEN("SSP3CLK", SSP3, 13000000, 0),
+ PXA3xx_CKEN("SSP4CLK", SSP4, 13000000, 0),
+ PXA3xx_CKEN("PWM0CLK", PWM0, 13000000, 0),
+ PXA3xx_CKEN("PWM1CLK", PWM1, 13000000, 0),
+
+ PXA3xx_CKEN("MMC1CLK", MMC1, 19500000, 0),
+ PXA3xx_CKEN("MMC2CLK", MMC2, 19500000, 0),
+ PXA3xx_CKEN("MMC3CLK", MMC3, 19500000, 0),
+};
- PXA3xx_CK("LCDCLK", LCD, &clk_pxa3xx_hsio_ops, &pxa_device_fb.dev),
- PXA3xx_CK("CAMCLK", CAMERA, &clk_pxa3xx_hsio_ops, NULL),
- PXA3xx_CK("AC97CLK", AC97, &clk_pxa3xx_ac97_ops, NULL),
-
- PXA3xx_CKEN("UARTCLK", FFUART, 14857000, 1, &pxa_device_ffuart.dev),
- PXA3xx_CKEN("UARTCLK", BTUART, 14857000, 1, &pxa_device_btuart.dev),
- PXA3xx_CKEN("UARTCLK", STUART, 14857000, 1, NULL),
-
- PXA3xx_CKEN("I2CCLK", I2C, 32842000, 0, &pxa_device_i2c.dev),
- PXA3xx_CKEN("UDCCLK", UDC, 48000000, 5, &pxa_device_udc.dev),
- PXA3xx_CKEN("USBCLK", USBH, 48000000, 0, &pxa27x_device_ohci.dev),
- PXA3xx_CKEN("KBDCLK", KEYPAD, 32768, 0, &pxa27x_device_keypad.dev),
-
- PXA3xx_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev),
- PXA3xx_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev),
- PXA3xx_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev),
- PXA3xx_CKEN("SSPCLK", SSP4, 13000000, 0, &pxa3xx_device_ssp4.dev),
- PXA3xx_CKEN("PWMCLK", PWM0, 13000000, 0, &pxa27x_device_pwm0.dev),
- PXA3xx_CKEN("PWMCLK", PWM1, 13000000, 0, &pxa27x_device_pwm1.dev),
-
- PXA3xx_CKEN("MMCCLK", MMC1, 19500000, 0, &pxa_device_mci.dev),
- PXA3xx_CKEN("MMCCLK", MMC2, 19500000, 0, &pxa3xx_device_mci2.dev),
- PXA3xx_CKEN("MMCCLK", MMC3, 19500000, 0, &pxa3xx_device_mci3.dev),
+static struct clk_function pxa3xx_clk_funcs[] = {
+ CLK_FUNC("FFUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_ffuart.dev),
+ CLK_FUNC("BTUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_btuart.dev),
+ CLK_FUNC("STUARTCLK", "UARTCLK", &clk_dev_ops, &pxa_device_stuart.dev),
+ CLK_FUNC("SSP1CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp1.dev),
+ CLK_FUNC("SSP2CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp2.dev),
+ CLK_FUNC("SSP3CLK", "SSPCLK", &clk_dev_ops, &pxa27x_device_ssp3.dev),
+ CLK_FUNC("SSP4CLK", "SSPCLK", &clk_dev_ops, &pxa3xx_device_ssp4.dev),
+ CLK_FUNC("MMC1CLK", "MMCCLK", &clk_dev_ops, &pxa_device_mci.dev),
+ CLK_FUNC("MMC2CLK", "MMCCLK", &clk_dev_ops, &pxa3xx_device_mci2.dev),
+ CLK_FUNC("MMC3CLK", "MMCCLK", &clk_dev_ops, &pxa3xx_device_mci3.dev),
+ CLK_FUNC("PWM0CLK", "PWMCLK", &clk_dev_ops, &pxa27x_device_pwm0.dev),
+ CLK_FUNC("PWM1CLK", "PWMCLK", &clk_dev_ops, &pxa27x_device_pwm1.dev),
};
#ifdef CONFIG_PM
@@ -556,7 +577,8 @@ static int __init pxa3xx_init(void)
*/
ASCR &= ~(ASCR_RDH | ASCR_D1S | ASCR_D2S | ASCR_D3S);
- clks_register(pxa3xx_clks, ARRAY_SIZE(pxa3xx_clks));
+ ret = clks_register(pxa3xx_clks, ARRAY_SIZE(pxa3xx_clks));
+ ret = clk_alloc_functions(pxa3xx_clk_funcs, ARRAY_SIZE(pxa3xx_clk_funcs));
if ((ret = pxa_init_dma(32)))
return ret;
--
1.5.4.4
--
With best wishes
Dmitry
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