diff options
| author | Govindraj R <govindraj.raja@ti.com> | 2010-08-02 13:18:11 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-08-02 13:18:11 +0300 |
| commit | 5ade4ff593c8f91f7e1288c6bc9aff046b62e0d6 (patch) | |
| tree | fd4cabfef1f84e9e7acb14c4728c4266b41c2dd7 | |
| parent | b075f58b2c0f377b4bfbe11b817e003393bcb489 (diff) | |
omap3: serial: Add context save and restore for mcr
Adds context save/restore for mcr register as state of mcr register
is lost after core off.
Signed-off-by: Govindraj R <govindraj.raja@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
| -rw-r--r-- | arch/arm/mach-omap2/serial.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 3771254dfa8..804dbb21cee 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -74,6 +74,7 @@ struct omap_uart_state { u16 sysc; u16 scr; u16 wer; + u16 mcr; #endif }; @@ -197,6 +198,9 @@ static void omap_uart_save_context(struct omap_uart_state *uart) uart->sysc = serial_read_reg(p, UART_OMAP_SYSC); uart->scr = serial_read_reg(p, UART_OMAP_SCR); uart->wer = serial_read_reg(p, UART_OMAP_WER); + serial_write_reg(p, UART_LCR, 0x80); + uart->mcr = serial_read_reg(p, UART_MCR); + serial_write_reg(p, UART_LCR, lcr); uart->context_valid = 1; } @@ -225,6 +229,8 @@ static void omap_uart_restore_context(struct omap_uart_state *uart) serial_write_reg(p, UART_DLM, uart->dlh); serial_write_reg(p, UART_LCR, 0x0); /* Operational mode */ serial_write_reg(p, UART_IER, uart->ier); + serial_write_reg(p, UART_LCR, 0x80); + serial_write_reg(p, UART_MCR, uart->mcr); serial_write_reg(p, UART_FCR, 0xA1); serial_write_reg(p, UART_LCR, 0xBF); /* Config B mode */ serial_write_reg(p, UART_EFR, efr); |