diff options
Diffstat (limited to 'arch/arm/mach-omap2/mailbox.c')
| -rw-r--r-- | arch/arm/mach-omap2/mailbox.c | 47 |
1 files changed, 34 insertions, 13 deletions
diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c index 281ab634244..52a981cb8fd 100644 --- a/arch/arm/mach-omap2/mailbox.c +++ b/arch/arm/mach-omap2/mailbox.c @@ -40,6 +40,9 @@ #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) @@ -93,29 +96,47 @@ static int omap2_mbox_startup(struct omap_mbox *mbox) mbox_ick_handle = clk_get(NULL, "mailboxes_ick"); if (IS_ERR(mbox_ick_handle)) { - printk(KERN_ERR "Could not get mailboxes_ick: %d\n", + 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); - 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 mmu out of reset\n"); - return -ENODEV; + 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); pr_info("omap mailbox rev %d.%d\n", (l & 0xf0) >> 4, (l & 0x0f)); - l = SMARTIDLE | AUTOIDLE; + if (cpu_is_omap44xx()) + l = OMAP4_SMARTIDLE; + else + l = SMARTIDLE | AUTOIDLE; mbox_write_reg(l, MAILBOX_SYSCONFIG); omap2_mbox_enable_irq(mbox, IRQ_RX); |