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.raja@xxxxxx>
---
arch/arm/mach-omap2/serial.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 55903f0..5e3bbce 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -64,6 +64,7 @@ struct omap_uart_state {
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 */
@@ -308,6 +309,10 @@ 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
@@ -400,7 +405,9 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
od->pm_lats = console_uart_latency;
}
- omap_device_disable_idle_on_suspend(pdev);
+ if (no_console_suspend)
+ 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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