diff options
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/serial.c | 100 |
1 files changed, 40 insertions, 60 deletions
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 69651cf0830..78ab2be7024 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -3,7 +3,7 @@ * * OMAP2 serial support. * - * Copyright (C) 2005 Nokia Corporation + * Copyright (C) 2005-2008 Nokia Corporation * Author: Paul Mundt <paul.mundt@nokia.com> * * Based off of arch/arm/mach-omap/omap1/serial.c @@ -23,12 +23,8 @@ #include <mach/common.h> #include <mach/board.h> -static struct clk * uart1_ick = NULL; -static struct clk * uart1_fck = NULL; -static struct clk * uart2_ick = NULL; -static struct clk * uart2_fck = NULL; -static struct clk * uart3_ick = NULL; -static struct clk * uart3_fck = NULL; +static struct clk *uart_ick[OMAP_MAX_NR_PORTS]; +static struct clk *uart_fck[OMAP_MAX_NR_PORTS]; static struct plat_serial8250_port serial_platform_data[] = { { @@ -38,7 +34,7 @@ static struct plat_serial8250_port serial_platform_data[] = { .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, + .uartclk = OMAP24XX_BASE_BAUD * 16, }, { .membase = IO_ADDRESS(OMAP_UART2_BASE), .mapbase = OMAP_UART2_BASE, @@ -46,7 +42,7 @@ static struct plat_serial8250_port serial_platform_data[] = { .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, + .uartclk = OMAP24XX_BASE_BAUD * 16, }, { .membase = IO_ADDRESS(OMAP_UART3_BASE), .mapbase = OMAP_UART3_BASE, @@ -54,7 +50,7 @@ static struct plat_serial8250_port serial_platform_data[] = { .flags = UPF_BOOT_AUTOCONF, .iotype = UPIO_MEM, .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, + .uartclk = OMAP24XX_BASE_BAUD * 16, }, { .flags = 0 } @@ -87,10 +83,27 @@ static inline void __init omap_serial_reset(struct plat_serial8250_port *p) serial_write_reg(p, UART_OMAP_SYSC, (0x02 << 3) | (1 << 2) | (1 << 0)); } -void __init omap_serial_init() +void omap_serial_enable_clocks(int enable) +{ + int i; + for (i = 0; i < OMAP_MAX_NR_PORTS; i++) { + if (uart_ick[i] && uart_fck[i]) { + if (enable) { + clk_enable(uart_ick[i]); + clk_enable(uart_fck[i]); + } else { + clk_disable(uart_ick[i]); + clk_disable(uart_fck[i]); + } + } + } +} + +void __init omap_serial_init(void) { int i; const struct omap_uart_config *info; + char name[16]; /* * Make sure the serial ports are muxed on at this point. @@ -98,8 +111,7 @@ void __init omap_serial_init() * if not needed. */ - info = omap_get_config(OMAP_TAG_UART, - struct omap_uart_config); + info = omap_get_config(OMAP_TAG_UART, struct omap_uart_config); if (info == NULL) return; @@ -113,53 +125,21 @@ void __init omap_serial_init() continue; } - switch (i) { - case 0: - uart1_ick = clk_get(NULL, "uart1_ick"); - if (IS_ERR(uart1_ick)) - printk("Could not get uart1_ick\n"); - else { - clk_enable(uart1_ick); - } - - uart1_fck = clk_get(NULL, "uart1_fck"); - if (IS_ERR(uart1_fck)) - printk("Could not get uart1_fck\n"); - else { - clk_enable(uart1_fck); - } - break; - case 1: - uart2_ick = clk_get(NULL, "uart2_ick"); - if (IS_ERR(uart2_ick)) - printk("Could not get uart2_ick\n"); - else { - clk_enable(uart2_ick); - } - - uart2_fck = clk_get(NULL, "uart2_fck"); - if (IS_ERR(uart2_fck)) - printk("Could not get uart2_fck\n"); - else { - clk_enable(uart2_fck); - } - break; - case 2: - uart3_ick = clk_get(NULL, "uart3_ick"); - if (IS_ERR(uart3_ick)) - printk("Could not get uart3_ick\n"); - else { - clk_enable(uart3_ick); - } - - uart3_fck = clk_get(NULL, "uart3_fck"); - if (IS_ERR(uart3_fck)) - printk("Could not get uart3_fck\n"); - else { - clk_enable(uart3_fck); - } - break; - } + sprintf(name, "uart%d_ick", i+1); + uart_ick[i] = clk_get(NULL, name); + if (IS_ERR(uart_ick[i])) { + printk(KERN_ERR "Could not get uart%d_ick\n", i+1); + uart_ick[i] = NULL; + } else + clk_enable(uart_ick[i]); + + sprintf(name, "uart%d_fck", i+1); + uart_fck[i] = clk_get(NULL, name); + if (IS_ERR(uart_fck[i])) { + printk(KERN_ERR "Could not get uart%d_fck\n", i+1); + uart_fck[i] = NULL; + } else + clk_enable(uart_fck[i]); omap_serial_reset(p); } |