For the early console probing we had avoided hwmod reset and idling
and uart was idled using hwmod API and enabled back using omap_device API
after omap_device registration.
Now since we are using runtime API's to enable back uart move hwmod idling and
use runtime API to enable back UART.
Signed-off-by: Govindraj.R <govindraj.raja@xxxxxx>
---
arch/arm/mach-omap2/serial.c | 26 ++++++++----------------
arch/arm/plat-omap/include/plat/omap-serial.h | 1 +
drivers/tty/serial/omap-serial.c | 1 +
3 files changed, 11 insertions(+), 17 deletions(-)
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 57d063a..87696bf 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -24,13 +24,11 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
-#include <linux/console.h>
#include <plat/omap-serial.h>
#include <plat/common.h>
#include <plat/board.h>
#include <plat/dma.h>
-#include <plat/omap_hwmod.h>
#include <plat/omap_device.h>
#include <plat/omap-pm.h>
@@ -244,10 +242,16 @@ static void omap_uart_set_forceidle(struct platform_device *pdev)
omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_FORCE);
}
+static void omap_uart_hwmod_idle(struct platform_device *pdev)
+{
+ struct omap_device *od = to_omap_device(pdev);
+
+ omap_hwmod_idle(od->hwmods[0]);
+}
+
#else
static void omap_uart_set_forceidle(struct platform_device *pdev) {}
-static void omap_uart_enable_wakeup(struct platform_device *pdev, bool enable)
-{}
+static void omap_uart_hwmod_idle(struct platform_device *pdev) {}
#endif /* CONFIG_PM */
struct omap_hwmod *omap_uart_hwmod_lookup(int num)
@@ -338,6 +342,7 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
pdata->enable_wakeup = omap_uart_enable_wakeup;
pdata->get_context_loss_count = omap_pm_get_dev_context_loss_count;
pdata->set_force_idle = omap_uart_set_forceidle;
+ pdata->hwmod_idle = omap_uart_hwmod_idle;
pdata->dma_enabled = info->dma_enabled;
pdata->dma_rx_buf_size = info->dma_rx_buf_size;
pdata->dma_rx_poll_rate = info->dma_rx_poll_rate;
@@ -356,19 +361,6 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt);
- console_lock(); /* in case the earlycon is on the UART */
-
- /*
- * Because of early UART probing, UART did not get idled
- * on init. Now that omap_device is ready, ensure full idle
- * before doing omap_device_enable().
- */
- omap_hwmod_idle(oh);
-
- omap_device_enable(pdev);
-
- console_unlock();
-
if ((cpu_is_omap34xx() && bdata->pads))
device_init_wakeup(&pdev->dev, true);
diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index de8de87..800f215 100644
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -71,6 +71,7 @@ struct omap_uart_port_info {
void (*enable_wakeup)(struct platform_device *, bool);
u32 (*get_context_loss_count)(struct device *);
void (*set_force_idle)(struct platform_device *);
+ void (*hwmod_idle)(struct platform_device *);
};
struct uart_omap_dma {
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 92a1f10..8125a89 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1394,6 +1394,7 @@ static int serial_omap_probe(struct platform_device *pdev)
pm_runtime_irq_safe(&pdev->dev);
if (device_may_wakeup(&pdev->dev)) {
pm_runtime_enable(&pdev->dev);
+ omap_up_info->hwmod_idle(pdev);
pm_runtime_get_sync(&pdev->dev);
}
--
1.7.4.1
--
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