mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-24 02:18:54 +00:00
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>
This commit is contained in:
parent
69dbf857c8
commit
82d2a5db52
@ -14,12 +14,11 @@
|
|||||||
#include <linux/err.h>
|
#include <linux/err.h>
|
||||||
#include <linux/platform_device.h>
|
#include <linux/platform_device.h>
|
||||||
#include <linux/io.h>
|
#include <linux/io.h>
|
||||||
|
#include <linux/pm_runtime.h>
|
||||||
#include <plat/mailbox.h>
|
#include <plat/mailbox.h>
|
||||||
#include <mach/irqs.h>
|
#include <mach/irqs.h>
|
||||||
|
|
||||||
#define MAILBOX_REVISION 0x000
|
#define MAILBOX_REVISION 0x000
|
||||||
#define MAILBOX_SYSCONFIG 0x010
|
|
||||||
#define MAILBOX_SYSSTATUS 0x014
|
|
||||||
#define MAILBOX_MESSAGE(m) (0x040 + 4 * (m))
|
#define MAILBOX_MESSAGE(m) (0x040 + 4 * (m))
|
||||||
#define MAILBOX_FIFOSTATUS(m) (0x080 + 4 * (m))
|
#define MAILBOX_FIFOSTATUS(m) (0x080 + 4 * (m))
|
||||||
#define MAILBOX_MSGSTATUS(m) (0x0c0 + 4 * (m))
|
#define MAILBOX_MSGSTATUS(m) (0x0c0 + 4 * (m))
|
||||||
@ -33,17 +32,6 @@
|
|||||||
#define MAILBOX_IRQ_NEWMSG(m) (1 << (2 * (m)))
|
#define MAILBOX_IRQ_NEWMSG(m) (1 << (2 * (m)))
|
||||||
#define MAILBOX_IRQ_NOTFULL(m) (1 << (2 * (m) + 1))
|
#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 MBOX_REG_SIZE 0x120
|
||||||
|
|
||||||
#define OMAP4_MBOX_REG_SIZE 0x130
|
#define OMAP4_MBOX_REG_SIZE 0x130
|
||||||
@ -70,8 +58,6 @@ struct omap_mbox2_priv {
|
|||||||
unsigned long irqdisable;
|
unsigned long irqdisable;
|
||||||
};
|
};
|
||||||
|
|
||||||
static struct clk *mbox_ick_handle;
|
|
||||||
|
|
||||||
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
|
static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
|
||||||
omap_mbox_type_t irq);
|
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)
|
static int omap2_mbox_startup(struct omap_mbox *mbox)
|
||||||
{
|
{
|
||||||
u32 l;
|
u32 l;
|
||||||
unsigned long timeout;
|
|
||||||
|
|
||||||
mbox_ick_handle = clk_get(NULL, "mailboxes_ick");
|
pm_runtime_enable(mbox->dev->parent);
|
||||||
if (IS_ERR(mbox_ick_handle)) {
|
pm_runtime_get_sync(mbox->dev->parent);
|
||||||
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;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
l = mbox_read_reg(MAILBOX_REVISION);
|
l = mbox_read_reg(MAILBOX_REVISION);
|
||||||
pr_debug("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f));
|
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);
|
omap2_mbox_enable_irq(mbox, IRQ_RX);
|
||||||
|
|
||||||
return 0;
|
return 0;
|
||||||
@ -143,9 +89,8 @@ static int omap2_mbox_startup(struct omap_mbox *mbox)
|
|||||||
|
|
||||||
static void omap2_mbox_shutdown(struct omap_mbox *mbox)
|
static void omap2_mbox_shutdown(struct omap_mbox *mbox)
|
||||||
{
|
{
|
||||||
clk_disable(mbox_ick_handle);
|
pm_runtime_put_sync(mbox->dev->parent);
|
||||||
clk_put(mbox_ick_handle);
|
pm_runtime_disable(mbox->dev->parent);
|
||||||
mbox_ick_handle = NULL;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Mailbox FIFO handle functions */
|
/* Mailbox FIFO handle functions */
|
||||||
|
Loading…
Reference in New Issue
Block a user