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authorOmar Ramirez Luna <omar.ramirez@ti.com>2011-02-24 12:51:33 -0800
committerTony Lindgren <tony@atomide.com>2011-02-24 12:51:33 -0800
commit82d2a5db5296834a4317e554f57b8883d7abb86d (patch)
treed05605dfd2a2192a3c2fffba2c2fd2ee1c3bf6dd /arch/arm/mach-omap2/mailbox.c
parent69dbf857c80e9697621ecb0d4323385999449663 (diff)
OMAP: mailbox: use runtime pm for clk and sysc handling
Use runtime pm APIs to enable/disable mailbox clocks and to configure SYSC register. Based on the patch sent by Felipe Contreras: https://patchwork.kernel.org/patch/101662/ Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/mailbox.c')
-rw-r--r--arch/arm/mach-omap2/mailbox.c65
1 files changed, 5 insertions, 60 deletions
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index de352bdbcd0..9a61e1f907a 100644
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -14,12 +14,11 @@
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+#include <linux/pm_runtime.h>
#include <plat/mailbox.h>
#include <mach/irqs.h>
#define MAILBOX_REVISION 0x000
-#define MAILBOX_SYSCONFIG 0x010
-#define MAILBOX_SYSSTATUS 0x014
#define MAILBOX_MESSAGE(m) (0x040 + 4 * (m))
#define MAILBOX_FIFOSTATUS(m) (0x080 + 4 * (m))
#define MAILBOX_MSGSTATUS(m) (0x0c0 + 4 * (m))
@@ -33,17 +32,6 @@
#define MAILBOX_IRQ_NEWMSG(m) (1 << (2 * (m)))
#define MAILBOX_IRQ_NOTFULL(m) (1 << (2 * (m) + 1))
-/* SYSCONFIG: register bit definition */
-#define AUTOIDLE (1 << 0)
-#define SOFTRESET (1 << 1)
-#define SMARTIDLE (2 << 3)
-#define OMAP4_SOFTRESET (1 << 0)
-#define OMAP4_NOIDLE (1 << 2)
-#define OMAP4_SMARTIDLE (2 << 2)
-
-/* SYSSTATUS: register bit definition */
-#define RESETDONE (1 << 0)
-
#define MBOX_REG_SIZE 0x120
#define OMAP4_MBOX_REG_SIZE 0x130
@@ -70,8 +58,6 @@ struct omap_mbox2_priv {
unsigned long irqdisable;
};
-static struct clk *mbox_ick_handle;
-
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
omap_mbox_type_t irq);
@@ -89,53 +75,13 @@ static inline void mbox_write_reg(u32 val, size_t ofs)
static int omap2_mbox_startup(struct omap_mbox *mbox)
{
u32 l;
- unsigned long timeout;
- mbox_ick_handle = clk_get(NULL, "mailboxes_ick");
- if (IS_ERR(mbox_ick_handle)) {
- printk(KERN_ERR "Could not get mailboxes_ick: %ld\n",
- PTR_ERR(mbox_ick_handle));
- return PTR_ERR(mbox_ick_handle);
- }
- clk_enable(mbox_ick_handle);
-
- if (cpu_is_omap44xx()) {
- mbox_write_reg(OMAP4_SOFTRESET, MAILBOX_SYSCONFIG);
- timeout = jiffies + msecs_to_jiffies(20);
- do {
- l = mbox_read_reg(MAILBOX_SYSCONFIG);
- if (!(l & OMAP4_SOFTRESET))
- break;
- } while (!time_after(jiffies, timeout));
-
- if (l & OMAP4_SOFTRESET) {
- pr_err("Can't take mailbox out of reset\n");
- return -ENODEV;
- }
- } else {
- mbox_write_reg(SOFTRESET, MAILBOX_SYSCONFIG);
- timeout = jiffies + msecs_to_jiffies(20);
- do {
- l = mbox_read_reg(MAILBOX_SYSSTATUS);
- if (l & RESETDONE)
- break;
- } while (!time_after(jiffies, timeout));
-
- if (!(l & RESETDONE)) {
- pr_err("Can't take mailbox out of reset\n");
- return -ENODEV;
- }
- }
+ pm_runtime_enable(mbox->dev->parent);
+ pm_runtime_get_sync(mbox->dev->parent);
l = mbox_read_reg(MAILBOX_REVISION);
pr_debug("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
- if (cpu_is_omap44xx())
- l = OMAP4_SMARTIDLE;
- else
- l = SMARTIDLE | AUTOIDLE;
- mbox_write_reg(l, MAILBOX_SYSCONFIG);
-
omap2_mbox_enable_irq(mbox, IRQ_RX);
return 0;
@@ -143,9 +89,8 @@ static int omap2_mbox_startup(struct omap_mbox *mbox)
static void omap2_mbox_shutdown(struct omap_mbox *mbox)
{
- clk_disable(mbox_ick_handle);
- clk_put(mbox_ick_handle);
- mbox_ick_handle = NULL;
+ pm_runtime_put_sync(mbox->dev->parent);
+ pm_runtime_disable(mbox->dev->parent);
}
/* Mailbox FIFO handle functions */