diff options
| author | Rajanikanth H.V <rajanikanth.hv@stericsson.com> | 2011-08-30 12:49:34 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@stericsson.com> | 2011-09-19 16:05:54 +0200 |
| commit | 9af16c52799521c3df8bb4cef36f5c894c7cffe5 (patch) | |
| tree | 17b7ae47587266a24d6f5b71548d71f02f194d0e /drivers/tty/serial/amba-pl011.c | |
| parent | 40ce868021c2a13c772b46223b85af0b774d11da (diff) | |
pl011: migrate pl011 changes from 2.3v3.2
Ref:
ARM: ux500: uart: context save/restore uses relaxed
pl011: add ifdef
pl011: don't touch registers when clock is off
ux500: pl011: Workaround for UART registers lockup
Migrated Changes from: e1f512c, 852b78d, c2195fa, ac87c0e
Diffstat (limited to 'drivers/tty/serial/amba-pl011.c')
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index ff4761e482c..73bd1bc59df 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -1236,7 +1236,7 @@ static irqreturn_t pl011_int(int irq, void *dev_id) do { writew(status & ~(UART011_TXIS|UART011_RTIS| UART011_RXIS), - uap->port.membase + UART011_ICR); + uap->port.membase + UART011_ICR); if (status & (UART011_RTIS|UART011_RXIS)) { if (pl011_dma_rx_running(uap)) @@ -1723,8 +1723,6 @@ static struct uart_ops amba_pl011_pops = { #endif }; -static struct uart_amba_port *amba_ports[UART_NR]; - #ifdef CONFIG_SERIAL_AMBA_PL011_CONSOLE static void pl011_console_putchar(struct uart_port *port, int ch) @@ -1961,7 +1959,12 @@ static int pl011_suspend(struct amba_device *dev, pm_message_t state) if (!uap) return -EINVAL; +#ifdef CONFIG_SERIAL_AMBA_PL011_CLOCK_CONTROL + cancel_delayed_work_sync(&uap->clk_off_work); + if (uap->clk_state == PL011_CLK_OFF) + return 0; +#endif return uart_suspend_port(&amba_reg, &uap->port); } @@ -1971,6 +1974,10 @@ static int pl011_resume(struct amba_device *dev) if (!uap) return -EINVAL; +#ifdef CONFIG_SERIAL_AMBA_PL011_CLOCK_CONTROL + if (uap->clk_state == PL011_CLK_OFF) + return 0; +#endif return uart_resume_port(&amba_reg, &uap->port); } |