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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-20 20:46:21 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-20 20:46:21 -0400 |
| commit | 70ac4385a13f78bc478f26d317511893741b05bd (patch) | |
| tree | dafc7f3018295fc4ee00339889e4f35d5b9d7743 /arch/arm/mach-pnx4008/serial.c | |
| parent | d59bf96cdde5b874a57bfd1425faa45da915d0b7 (diff) | |
| parent | 077e98945db7e54a9865b5f29a1f02f531eca414 (diff) | |
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
Conflicts:
include/linux/nfs_fs.h
Fixed up conflict with kernel header updates.
Diffstat (limited to 'arch/arm/mach-pnx4008/serial.c')
| -rw-r--r-- | arch/arm/mach-pnx4008/serial.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/arm/mach-pnx4008/serial.c b/arch/arm/mach-pnx4008/serial.c new file mode 100644 index 000000000000..2e1e04cc048c --- /dev/null +++ b/arch/arm/mach-pnx4008/serial.c @@ -0,0 +1,69 @@ +/* + * linux/arch/arm/mach-pnx4008/serial.c + * + * PNX4008 UART initialization + * + * Copyright: MontaVista Software Inc. (c) 2005 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/types.h> + +#include <asm/io.h> + +#include <asm/arch/platform.h> +#include <asm/arch/hardware.h> + +#include <linux/serial_core.h> +#include <linux/serial_reg.h> +#include <asm/arch/pm.h> + +#include <asm/arch/clock.h> + +#define UART_3 0 +#define UART_4 1 +#define UART_5 2 +#define UART_6 3 +#define UART_UNKNOWN (-1) + +#define UART3_BASE_VA IO_ADDRESS(PNX4008_UART3_BASE) +#define UART4_BASE_VA IO_ADDRESS(PNX4008_UART4_BASE) +#define UART5_BASE_VA IO_ADDRESS(PNX4008_UART5_BASE) +#define UART6_BASE_VA IO_ADDRESS(PNX4008_UART6_BASE) + +#define UART_FCR_OFFSET 8 +#define UART_FIFO_SIZE 64 + +void pnx4008_uart_init(void) +{ + u32 tmp; + int i = UART_FIFO_SIZE; + + __raw_writel(0xC1, UART5_BASE_VA + UART_FCR_OFFSET); + __raw_writel(0xC1, UART3_BASE_VA + UART_FCR_OFFSET); + + /* Send a NULL to fix the UART HW bug */ + __raw_writel(0x00, UART5_BASE_VA); + __raw_writel(0x00, UART3_BASE_VA); + + while (i--) { + tmp = __raw_readl(UART5_BASE_VA); + tmp = __raw_readl(UART3_BASE_VA); + } + __raw_writel(0, UART5_BASE_VA + UART_FCR_OFFSET); + __raw_writel(0, UART3_BASE_VA + UART_FCR_OFFSET); + + /* setup wakeup interrupt */ + start_int_set_rising_edge(SE_U3_RX_INT); + start_int_ack(SE_U3_RX_INT); + start_int_umask(SE_U3_RX_INT); + + start_int_set_rising_edge(SE_U5_RX_INT); + start_int_ack(SE_U5_RX_INT); + start_int_umask(SE_U5_RX_INT); +} + |