[patch-v2.6.34 7/9] usb: musb: use only clk framework for clk handling
Felipe Balbi
felipe.balbi at nokia.com
Tue Dec 29 17:59:25 EST 2009
get rid of the set_clock hackery.
Cc: linux-usb at vger.kernel.org
Signed-off-by: Felipe Balbi <felipe.balbi at nokia.com>
---
Greg, I'll send this patch to you shortly, it's
only here so that Tony can have it in linux-omap-2.6
to avoid breaking any of his boards.
drivers/usb/musb/musb_core.c | 48 ++++++++++++++----------------------------
drivers/usb/musb/musb_core.h | 2 -
drivers/usb/musb/omap2430.c | 10 +-------
drivers/usb/musb/tusb6010.c | 16 +++++--------
include/linux/usb/musb.h | 4 +-
5 files changed, 26 insertions(+), 54 deletions(-)
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 5eb9318..37ca87d 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -977,10 +977,8 @@ static void musb_shutdown(struct platform_device *pdev)
spin_lock_irqsave(&musb->lock, flags);
musb_platform_disable(musb);
musb_generic_disable(musb);
- if (musb->clock) {
- clk_put(musb->clock);
- musb->clock = NULL;
- }
+ clk_put(musb->clock);
+ musb->clock = NULL;
spin_unlock_irqrestore(&musb->lock, flags);
/* FIXME power down */
@@ -1864,10 +1862,8 @@ static void musb_free(struct musb *musb)
musb_platform_exit(musb);
musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
- if (musb->clock) {
- clk_disable(musb->clock);
- clk_put(musb->clock);
- }
+ clk_disable(musb->clock);
+ clk_put(musb->clock);
#ifdef CONFIG_USB_MUSB_HDRC_HCD
usb_put_hcd(musb_to_hcd(musb));
@@ -1930,7 +1926,6 @@ bad_config:
spin_lock_init(&musb->lock);
musb->board_mode = plat->mode;
musb->board_set_power = plat->set_power;
- musb->set_clock = plat->set_clock;
musb->min_power = plat->min_power;
/* Clock usage is chip-specific ... functional clock (DaVinci,
@@ -1938,15 +1933,17 @@ bad_config:
* code does is make sure a clock handle is available; platform
* code manages it during start/stop and suspend/resume.
*/
- if (plat->clock) {
- musb->clock = clk_get(dev, plat->clock);
- if (IS_ERR(musb->clock)) {
- status = PTR_ERR(musb->clock);
- musb->clock = NULL;
- goto fail;
- }
+ musb->clock = clk_get(dev, "ick");
+ if (IS_ERR(musb->clock)) {
+ status = PTR_ERR(musb->clock);
+ musb->clock = NULL;
+ goto fail;
}
+ status = clk_enable(musb->clock);
+ if (status < 0)
+ goto fail;
+
/* The musb_platform_init() call:
* - adjusts musb->mregs and musb->isr if needed,
* - may initialize an integrated tranceiver
@@ -2104,8 +2101,7 @@ fail:
dev_err(musb->controller,
"musb_init_controller failed with status %d\n", status);
- if (musb->clock)
- clk_put(musb->clock);
+ clk_put(musb->clock);
device_init_wakeup(dev, 0);
musb_free(musb);
@@ -2179,9 +2175,6 @@ static int musb_suspend(struct device *dev)
unsigned long flags;
struct musb *musb = dev_to_musb(&pdev->dev);
- if (!musb->clock)
- return 0;
-
spin_lock_irqsave(&musb->lock, flags);
if (is_peripheral_active(musb)) {
@@ -2194,10 +2187,7 @@ static int musb_suspend(struct device *dev)
*/
}
- if (musb->set_clock)
- musb->set_clock(musb->clock, 0);
- else
- clk_disable(musb->clock);
+ clk_disable(musb->clock);
spin_unlock_irqrestore(&musb->lock, flags);
return 0;
}
@@ -2207,13 +2197,7 @@ static int musb_resume_noirq(struct device *dev)
struct platform_device *pdev = to_platform_device(dev);
struct musb *musb = dev_to_musb(&pdev->dev);
- if (!musb->clock)
- return 0;
-
- if (musb->set_clock)
- musb->set_clock(musb->clock, 1);
- else
- clk_enable(musb->clock);
+ clk_enable(musb->clock);
/* for static cmos like DaVinci, register values were preserved
* unless for some reason the whole soc powered down or the USB
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 03d5090..3816d79 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -394,8 +394,6 @@ struct musb {
u8 board_mode; /* enum musb_mode */
int (*board_set_power)(int state);
- int (*set_clock)(struct clk *clk, int is_active);
-
u8 min_power; /* vbus for periph, in mA/2 */
bool is_host;
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 83beeac..b8e2451 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -273,10 +273,7 @@ int musb_platform_suspend(struct musb *musb)
otg_set_suspend(musb->xceiv, 1);
- if (musb->set_clock)
- musb->set_clock(musb->clock, 0);
- else
- clk_disable(musb->clock);
+ clk_disable(musb->clock);
return 0;
}
@@ -290,10 +287,7 @@ static int musb_platform_resume(struct musb *musb)
otg_set_suspend(musb->xceiv, 0);
- if (musb->set_clock)
- musb->set_clock(musb->clock, 1);
- else
- clk_enable(musb->clock);
+ clk_enable(musb->clock);
l = omap_readl(OTG_SYSCONFIG);
l &= ~ENABLEWAKEUP; /* disable wakeup */
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 88b587c..67ba2b9 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -279,12 +279,10 @@ static int tusb_draw_power(struct otg_transceiver *x, unsigned mA)
* Keep clock active when enabled. Note that this is not tied to
* drawing VBUS, as with OTG mA can be less than musb->min_power.
*/
- if (musb->set_clock) {
- if (mA)
- musb->set_clock(musb->clock, 1);
- else
- musb->set_clock(musb->clock, 0);
- }
+ if (mA)
+ clk_enable(musb->clock);
+ else
+ clk_disable(musb->clock);
/* tps65030 seems to consume max 100mA, with maybe 60mA available
* (measured on one board) for things other than tps and tusb.
@@ -531,8 +529,7 @@ static void tusb_source_power(struct musb *musb, int is_on)
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if (is_on) {
- if (musb->set_clock)
- musb->set_clock(musb->clock, 1);
+ clk_enable(musb->clock);
timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE);
musb->xceiv->default_a = 1;
musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
@@ -571,8 +568,7 @@ static void tusb_source_power(struct musb *musb, int is_on)
devctl &= ~MUSB_DEVCTL_SESSION;
conf &= ~TUSB_DEV_CONF_USB_HOST_MODE;
- if (musb->set_clock)
- musb->set_clock(musb->clock, 0);
+ clk_disable(musb->clock);
}
prcm &= ~(TUSB_PRCM_MNGMT_15_SW_EN | TUSB_PRCM_MNGMT_33_SW_EN);
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index d437556..50d5441 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -62,7 +62,7 @@ struct musb_hdrc_platform_data {
u8 mode;
/* for clk_get() */
- const char *clock;
+ const char *clock __deprecated;
/* (HOST or OTG) switch VBUS on/off */
int (*set_vbus)(struct device *dev, int is_on);
@@ -80,7 +80,7 @@ struct musb_hdrc_platform_data {
int (*set_power)(int state);
/* Turn device clock on or off */
- int (*set_clock)(struct clk *clock, int is_on);
+ int (*set_clock)(struct clk *clock, int is_on) __deprecated;
/* MUSB configuration-specific details */
struct musb_hdrc_config *config;
--
1.6.6.35.g1d85d
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