Merge branch 'pm-upstream/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-stable

6 files changed, 186 insertions, 74 deletions

diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index dff5528fbfb5..e26af837510b 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -51,6 +51,7 @@
 
 #define OVERO_GPIO_BT_XGATE     15
 #define OVERO_GPIO_W2W_NRESET   16
+#define OVERO_GPIO_PENDOWN      114
 #define OVERO_GPIO_BT_NRESET    164
 #define OVERO_GPIO_USBH_CPEN    168
 #define OVERO_GPIO_USBH_NRESET  183
diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
index 1d3c93bf86d3..f3c91a1ca391 100644
--- a/arch/arm/mach-omap2/cm.h
+++ b/arch/arm/mach-omap2/cm.h
@@ -29,9 +29,9 @@
  * These registers appear once per CM module.
  */
 
-#define OMAP3430_CM_REVISION            OMAP_CM_REGADDR(OCP_MOD, 0x0000)
-#define OMAP3430_CM_SYSCONFIG           OMAP_CM_REGADDR(OCP_MOD, 0x0010)
-#define OMAP3430_CM_POLCTRL             OMAP_CM_REGADDR(OCP_MOD, 0x009c)
+#define OMAP3430_CM_REVISION            OMAP34XX_CM_REGADDR(OCP_MOD, 0x0000)
+#define OMAP3430_CM_SYSCONFIG           OMAP34XX_CM_REGADDR(OCP_MOD, 0x0010)
+#define OMAP3430_CM_POLCTRL             OMAP34XX_CM_REGADDR(OCP_MOD, 0x009c)
 
 #define OMAP3_CM_CLKOUT_CTRL_OFFSET     0x0070
 #define OMAP3430_CM_CLKOUT_CTRL         OMAP_CM_REGADDR(OMAP3430_CCR_MOD, 0x0070)
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index f7b3baf76678..21201cd4117b 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -11,9 +11,6 @@
 #ifndef __ARCH_ARM_MACH_OMAP2_PM_H
 #define __ARCH_ARM_MACH_OMAP2_PM_H
 
-extern int omap2_pm_init(void);
-extern int omap3_pm_init(void);
-
 #ifdef CONFIG_PM_DEBUG
 extern void omap2_pm_dump(int mode, int resume, unsigned int us);
 extern int omap2_pm_debug;
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c
index db1025562fb0..528dbdc26e23 100644
--- a/arch/arm/mach-omap2/pm24xx.c
+++ b/arch/arm/mach-omap2/pm24xx.c
@@ -470,7 +470,7 @@ static void __init prcm_setup_regs(void)
                           WKUP_MOD, PM_WKEN);
 }
 
-int __init omap2_pm_init(void)
+static int __init omap2_pm_init(void)
 {
         u32 l;
 
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 841d4c5ed8be..488d595d8e4b 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -39,7 +39,9 @@
 struct power_state {
         struct powerdomain *pwrdm;
         u32 next_state;
+#ifdef CONFIG_SUSPEND
         u32 saved_state;
+#endif
         struct list_head node;
 };
 
@@ -293,6 +295,9 @@ out:
         local_irq_enable();
 }
 
+#ifdef CONFIG_SUSPEND
+static suspend_state_t suspend_state;
+
 static int omap3_pm_prepare(void)
 {
         disable_hlt();
@@ -321,7 +326,6 @@ static int omap3_pm_suspend(void)
 restore:
         /* Restore next_pwrsts */
         list_for_each_entry(pwrst, &pwrst_list, node) {
-                set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
                 state = pwrdm_read_prev_pwrst(pwrst->pwrdm);
                 if (state > pwrst->next_state) {
                         printk(KERN_INFO "Powerdomain (%s) didn't enter "
@@ -329,6 +333,7 @@ restore:
                                pwrst->pwrdm->name, pwrst->next_state);
                         ret = -1;
                 }
+                set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
         }
         if (ret)
                 printk(KERN_ERR "Could not enter target state in pm_suspend\n");
@@ -339,11 +344,11 @@ restore:
         return ret;
 }
 
-static int omap3_pm_enter(suspend_state_t state)
+static int omap3_pm_enter(suspend_state_t unused)
 {
         int ret = 0;
 
-        switch (state) {
+        switch (suspend_state) {
         case PM_SUSPEND_STANDBY:
         case PM_SUSPEND_MEM:
                 ret = omap3_pm_suspend();
@@ -360,12 +365,30 @@ static void omap3_pm_finish(void)
         enable_hlt();
 }
 
+/* Hooks to enable / disable UART interrupts during suspend */
+static int omap3_pm_begin(suspend_state_t state)
+{
+        suspend_state = state;
+        omap_uart_enable_irqs(0);
+        return 0;
+}
+
+static void omap3_pm_end(void)
+{
+        suspend_state = PM_SUSPEND_ON;
+        omap_uart_enable_irqs(1);
+        return;
+}
+
 static struct platform_suspend_ops omap_pm_ops = {
+        .begin          = omap3_pm_begin,
+        .end            = omap3_pm_end,
         .prepare        = omap3_pm_prepare,
         .enter          = omap3_pm_enter,
         .finish         = omap3_pm_finish,
         .valid          = suspend_valid_only_mem,
 };
+#endif /* CONFIG_SUSPEND */
 
 
 /**
@@ -613,6 +636,24 @@ static void __init prcm_setup_regs(void)
         /* Clear any pending PRCM interrupts */
         prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
 
+        /* Don't attach IVA interrupts */
+        prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
+        prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
+        prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
+        prm_write_mod_reg(0, OMAP3430_PER_MOD, OMAP3430_PM_IVAGRPSEL);
+
+        /* Clear any pending 'reset' flags */
+        prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST);
+        prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST);
+
+        /* Clear any pending PRCM interrupts */
+        prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
+
         omap3_iva_idle();
         omap3_d2d_idle();
 }
@@ -652,7 +693,7 @@ static int __init clkdms_setup(struct clockdomain *clkdm)
         return 0;
 }
 
-int __init omap3_pm_init(void)
+static int __init omap3_pm_init(void)
 {
         struct power_state *pwrst, *tmp;
         int ret;
@@ -692,7 +733,9 @@ int __init omap3_pm_init(void)
         _omap_sram_idle = omap_sram_push(omap34xx_cpu_suspend,
                                          omap34xx_cpu_suspend_sz);
 
+#ifdef CONFIG_SUSPEND
         suspend_set_ops(&omap_pm_ops);
+#endif /* CONFIG_SUSPEND */
 
         pm_idle = omap3_pm_idle;
 
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index c0bea75f13f8..ce22344b94e7 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -54,6 +54,7 @@ struct omap_uart_state {
 
         struct plat_serial8250_port *p;
         struct list_head node;
+        struct platform_device pdev;
 
 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
         int context_valid;
@@ -68,10 +69,9 @@ struct omap_uart_state {
 #endif
 };
 
-static struct omap_uart_state omap_uart[OMAP_MAX_NR_PORTS];
 static LIST_HEAD(uart_list);
 
-static struct plat_serial8250_port serial_platform_data[] = {
+static struct plat_serial8250_port serial_platform_data0[] = {
         {
                 .membase        = IO_ADDRESS(OMAP_UART1_BASE),
                 .mapbase        = OMAP_UART1_BASE,
@@ -81,6 +81,12 @@ static struct plat_serial8250_port serial_platform_data[] = {
                 .regshift       = 2,
                 .uartclk        = OMAP24XX_BASE_BAUD * 16,
         }, {
+                .flags          = 0
+        }
+};
+
+static struct plat_serial8250_port serial_platform_data1[] = {
+        {
                 .membase        = IO_ADDRESS(OMAP_UART2_BASE),
                 .mapbase        = OMAP_UART2_BASE,
                 .irq            = 73,
@@ -89,6 +95,12 @@ static struct plat_serial8250_port serial_platform_data[] = {
                 .regshift       = 2,
                 .uartclk        = OMAP24XX_BASE_BAUD * 16,
         }, {
+                .flags          = 0
+        }
+};
+
+static struct plat_serial8250_port serial_platform_data2[] = {
+        {
                 .membase        = IO_ADDRESS(OMAP_UART3_BASE),
                 .mapbase        = OMAP_UART3_BASE,
                 .irq            = 74,
@@ -227,6 +239,40 @@ static inline void omap_uart_disable_clocks(struct omap_uart_state *uart)
         clk_disable(uart->fck);
 }
 
+static void omap_uart_enable_wakeup(struct omap_uart_state *uart)
+{
+        /* Set wake-enable bit */
+        if (uart->wk_en && uart->wk_mask) {
+                u32 v = __raw_readl(uart->wk_en);
+                v |= uart->wk_mask;
+                __raw_writel(v, uart->wk_en);
+        }
+
+        /* Ensure IOPAD wake-enables are set */
+        if (cpu_is_omap34xx() && uart->padconf) {
+                u16 v = omap_ctrl_readw(uart->padconf);
+                v |= OMAP3_PADCONF_WAKEUPENABLE0;
+                omap_ctrl_writew(v, uart->padconf);
+        }
+}
+
+static void omap_uart_disable_wakeup(struct omap_uart_state *uart)
+{
+        /* Clear wake-enable bit */
+        if (uart->wk_en && uart->wk_mask) {
+                u32 v = __raw_readl(uart->wk_en);
+                v &= ~uart->wk_mask;
+                __raw_writel(v, uart->wk_en);
+        }
+
+        /* Ensure IOPAD wake-enables are cleared */
+        if (cpu_is_omap34xx() && uart->padconf) {
+                u16 v = omap_ctrl_readw(uart->padconf);
+                v &= ~OMAP3_PADCONF_WAKEUPENABLE0;
+                omap_ctrl_writew(v, uart->padconf);
+        }
+}
+
 static void omap_uart_smart_idle_enable(struct omap_uart_state *uart,
                                           int enable)
 {
@@ -256,6 +302,11 @@ static void omap_uart_block_sleep(struct omap_uart_state *uart)
 
 static void omap_uart_allow_sleep(struct omap_uart_state *uart)
 {
+        if (device_may_wakeup(&uart->pdev.dev))
+                omap_uart_enable_wakeup(uart);
+        else
+                omap_uart_disable_wakeup(uart);
+
         if (!uart->clocked)
                 return;
 
@@ -302,7 +353,6 @@ void omap_uart_resume_idle(int num)
                         /* Check for normal UART wakeup */
                         if (__raw_readl(uart->wk_st) & uart->wk_mask)
                                 omap_uart_block_sleep(uart);
-
                         return;
                 }
         }
@@ -356,16 +406,13 @@ static irqreturn_t omap_uart_interrupt(int irq, void *dev_id)
         return IRQ_NONE;
 }
 
-static u32 sleep_timeout = DEFAULT_TIMEOUT;
-
 static void omap_uart_idle_init(struct omap_uart_state *uart)
 {
-        u32 v;
         struct plat_serial8250_port *p = uart->p;
         int ret;
 
         uart->can_sleep = 0;
-        uart->timeout = sleep_timeout;
+        uart->timeout = DEFAULT_TIMEOUT;
         setup_timer(&uart->timer, omap_uart_idle_timer,
                     (unsigned long) uart);
         mod_timer(&uart->timer, jiffies + uart->timeout);
@@ -423,76 +470,101 @@ static void omap_uart_idle_init(struct omap_uart_state *uart)
                 uart->padconf = 0;
         }
 
-        /* Set wake-enable bit */
-        if (uart->wk_en && uart->wk_mask) {
-                v = __raw_readl(uart->wk_en);
-                v |= uart->wk_mask;
-                __raw_writel(v, uart->wk_en);
-        }
-
-        /* Ensure IOPAD wake-enables are set */
-        if (cpu_is_omap34xx() && uart->padconf) {
-                u16 v;
-
-                v = omap_ctrl_readw(uart->padconf);
-                v |= OMAP3_PADCONF_WAKEUPENABLE0;
-                omap_ctrl_writew(v, uart->padconf);
-        }
-
         p->flags |= UPF_SHARE_IRQ;
         ret = request_irq(p->irq, omap_uart_interrupt, IRQF_SHARED,
                           "serial idle", (void *)uart);
         WARN_ON(ret);
 }
 
-static ssize_t sleep_timeout_show(struct kobject *kobj,
-                                  struct kobj_attribute *attr,
+void omap_uart_enable_irqs(int enable)
+{
+        int ret;
+        struct omap_uart_state *uart;
+
+        list_for_each_entry(uart, &uart_list, node) {
+                if (enable)
+                        ret = request_irq(uart->p->irq, omap_uart_interrupt,
+                                IRQF_SHARED, "serial idle", (void *)uart);
+                else
+                        free_irq(uart->p->irq, (void *)uart);
+        }
+}
+
+static ssize_t sleep_timeout_show(struct device *dev,
+                                  struct device_attribute *attr,
                                   char *buf)
 {
-        return sprintf(buf, "%u\n", sleep_timeout / HZ);
+        struct platform_device *pdev = container_of(dev,
+                                        struct platform_device, dev);
+        struct omap_uart_state *uart = container_of(pdev,
+                                        struct omap_uart_state, pdev);
+
+        return sprintf(buf, "%u\n", uart->timeout / HZ);
 }
 
-static ssize_t sleep_timeout_store(struct kobject *kobj,
-                                   struct kobj_attribute *attr,
+static ssize_t sleep_timeout_store(struct device *dev,
+                                   struct device_attribute *attr,
                                    const char *buf, size_t n)
 {
-        struct omap_uart_state *uart;
+        struct platform_device *pdev = container_of(dev,
+                                        struct platform_device, dev);
+        struct omap_uart_state *uart = container_of(pdev,
+                                        struct omap_uart_state, pdev);
         unsigned int value;
 
         if (sscanf(buf, "%u", &value) != 1) {
                 printk(KERN_ERR "sleep_timeout_store: Invalid value\n");
                 return -EINVAL;
         }
-        sleep_timeout = value * HZ;
-        list_for_each_entry(uart, &uart_list, node) {
-                uart->timeout = sleep_timeout;
-                if (uart->timeout)
-                        mod_timer(&uart->timer, jiffies + uart->timeout);
-                else
-                        /* A zero value means disable timeout feature */
-                        omap_uart_block_sleep(uart);
-        }
+
+        uart->timeout = value * HZ;
+        if (uart->timeout)
+                mod_timer(&uart->timer, jiffies + uart->timeout);
+        else
+                /* A zero value means disable timeout feature */
+                omap_uart_block_sleep(uart);
+
         return n;
 }
 
-static struct kobj_attribute sleep_timeout_attr =
-        __ATTR(sleep_timeout, 0644, sleep_timeout_show, sleep_timeout_store);
-
+DEVICE_ATTR(sleep_timeout, 0644, sleep_timeout_show, sleep_timeout_store);
+#define DEV_CREATE_FILE(dev, attr) WARN_ON(device_create_file(dev, attr))
 #else
 static inline void omap_uart_idle_init(struct omap_uart_state *uart) {}
+#define DEV_CREATE_FILE(dev, attr)
 #endif /* CONFIG_PM */
 
-static struct platform_device serial_device = {
-        .name                   = "serial8250",
-        .id                     = PLAT8250_DEV_PLATFORM,
-        .dev                    = {
-                .platform_data  = serial_platform_data,
+static struct omap_uart_state omap_uart[OMAP_MAX_NR_PORTS] = {
+        {
+                .pdev = {
+                        .name                   = "serial8250",
+                        .id                     = PLAT8250_DEV_PLATFORM,
+                        .dev                    = {
+                                .platform_data  = serial_platform_data0,
+                        },
+                },
+        }, {
+                .pdev = {
+                        .name                   = "serial8250",
+                        .id                     = PLAT8250_DEV_PLATFORM1,
+                        .dev                    = {
+                                .platform_data  = serial_platform_data1,
+                        },
+                },
+        }, {
+                .pdev = {
+                        .name                   = "serial8250",
+                        .id                     = PLAT8250_DEV_PLATFORM2,
+                        .dev                    = {
+                                .platform_data  = serial_platform_data2,
+                        },
+                },
         },
 };
 
 void __init omap_serial_init(void)
 {
-        int i, err;
+        int i;
         const struct omap_uart_config *info;
         char name[16];
 
@@ -506,14 +578,12 @@ void __init omap_serial_init(void)
 
         if (info == NULL)
                 return;
-        if (cpu_is_omap44xx()) {
-                for (i = 0; i < OMAP_MAX_NR_PORTS; i++)
-                        serial_platform_data[i].irq += 32;
-        }
 
         for (i = 0; i < OMAP_MAX_NR_PORTS; i++) {
-                struct plat_serial8250_port *p = serial_platform_data + i;
                 struct omap_uart_state *uart = &omap_uart[i];
+                struct platform_device *pdev = &uart->pdev;
+                struct device *dev = &pdev->dev;
+                struct plat_serial8250_port *p = dev->platform_data;
 
                 if (!(info->enabled_uarts & (1 << i))) {
                         p->membase = NULL;
@@ -541,20 +611,21 @@ void __init omap_serial_init(void)
                 uart->num = i;
                 p->private_data = uart;
                 uart->p = p;
-                list_add(&uart->node, &uart_list);
+                list_add_tail(&uart->node, &uart_list);
+
+                if (cpu_is_omap44xx())
+                        p->irq += 32;
 
                 omap_uart_enable_clocks(uart);
                 omap_uart_reset(uart);
                 omap_uart_idle_init(uart);
-        }
-
-        err = platform_device_register(&serial_device);
-
-#ifdef CONFIG_PM
-        if (!err)
-                err = sysfs_create_file(&serial_device.dev.kobj,
-                                        &sleep_timeout_attr.attr);
-#endif
 
+                if (WARN_ON(platform_device_register(pdev)))
+                        continue;
+                if ((cpu_is_omap34xx() && uart->padconf) ||
+                    (uart->wk_en && uart->wk_mask)) {
+                        device_init_wakeup(dev, true);
+                        DEV_CREATE_FILE(dev, &dev_attr_sleep_timeout);
+                }
+        }
 }
-