If no_console_suspend is used we have prevent uart idling during suspend
to provide debug prints.
Power domain hooks can idle uarts if left enabled during system wide suspend
so re-use the omap_device_disable_idle_on_suspend API's to ensure console_uart
is not idled during suspend.
omap_device_disable_idle_on_suspend API was used on all uarts since the uart
driver was not runtime adapted, now with runtime adaptation we can re-use this
API only for no_console_suspend use cases.
Signed-off-by: Govindraj.R <govindraj.r...@ti.com>
---
arch/arm/mach-omap2/serial.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 631d72a..5d910ef 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -65,6 +65,7 @@ static struct omap_device_pm_latency *default_uart_latency;
static LIST_HEAD(uart_list);
static u8 num_uarts;
static u8 console_uart_id = -1;
+static u8 no_console_suspend;
#define DEFAULT_RXDMA_POLLRATE 1 /* RX DMA polling rate (us) */
#define DEFAULT_RXDMA_BUFSIZE 4096 /* RX DMA buffer size */
@@ -327,6 +328,10 @@ static int __init omap_serial_early_init(void)
if (cmdline_find_option(uart_name)) {
console_uart_id = uart->num;
+
+ if (cmdline_find_option("no_console_suspend"))
+ no_console_suspend = true;
+
/*
* omap-uart can be used for earlyprintk logs
* So if omap-uart is used as console then prevent
@@ -417,9 +422,10 @@ void __init omap_serial_init_port(struct omap_board_data
*bdata,
od = to_omap_device(pdev);
default_uart_latency = od->pm_lats;
od->pm_lats = console_uart_latency;
+ if (no_console_suspend)
+ omap_device_disable_idle_on_suspend(pdev);
}
- omap_device_disable_idle_on_suspend(pdev);
oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt);
uart->pdev = pdev;
--
1.7.4.1
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