diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap1/serial.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-omap1/serial.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap1/serial.c b/ANDROID_3.4.5/arch/arm/mach-omap1/serial.c deleted file mode 100644 index 93ae8f29..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-omap1/serial.c +++ /dev/null @@ -1,265 +0,0 @@ -/* - * linux/arch/arm/mach-omap1/serial.c - * - * OMAP1 serial support. - * - * 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/gpio.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/delay.h> -#include <linux/serial.h> -#include <linux/tty.h> -#include <linux/serial_8250.h> -#include <linux/serial_reg.h> -#include <linux/clk.h> -#include <linux/io.h> - -#include <asm/mach-types.h> - -#include <plat/board.h> -#include <plat/mux.h> -#include <plat/fpga.h> - -#include "pm.h" - -static struct clk * uart1_ck; -static struct clk * uart2_ck; -static struct clk * uart3_ck; - -static inline unsigned int omap_serial_in(struct plat_serial8250_port *up, - int offset) -{ - offset <<= up->regshift; - return (unsigned int)__raw_readb(up->membase + offset); -} - -static inline void omap_serial_outp(struct plat_serial8250_port *p, int offset, - int value) -{ - offset <<= p->regshift; - __raw_writeb(value, p->membase + offset); -} - -/* - * Internal UARTs need to be initialized for the 8250 autoconfig to work - * properly. Note that the TX watermark initialization may not be needed - * once the 8250.c watermark handling code is merged. - */ -static void __init omap_serial_reset(struct plat_serial8250_port *p) -{ - omap_serial_outp(p, UART_OMAP_MDR1, - UART_OMAP_MDR1_DISABLE); /* disable UART */ - omap_serial_outp(p, UART_OMAP_SCR, 0x08); /* TX watermark */ - omap_serial_outp(p, UART_OMAP_MDR1, - UART_OMAP_MDR1_16X_MODE); /* enable UART */ - - if (!cpu_is_omap15xx()) { - omap_serial_outp(p, UART_OMAP_SYSC, 0x01); - while (!(omap_serial_in(p, UART_OMAP_SYSC) & 0x01)); - } -} - -static struct plat_serial8250_port serial_platform_data[] = { - { - .mapbase = OMAP1_UART1_BASE, - .irq = INT_UART1, - .flags = UPF_BOOT_AUTOCONF, - .iotype = UPIO_MEM, - .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, - }, - { - .mapbase = OMAP1_UART2_BASE, - .irq = INT_UART2, - .flags = UPF_BOOT_AUTOCONF, - .iotype = UPIO_MEM, - .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, - }, - { - .mapbase = OMAP1_UART3_BASE, - .irq = INT_UART3, - .flags = UPF_BOOT_AUTOCONF, - .iotype = UPIO_MEM, - .regshift = 2, - .uartclk = OMAP16XX_BASE_BAUD * 16, - }, - { }, -}; - -static struct platform_device serial_device = { - .name = "serial8250", - .id = PLAT8250_DEV_PLATFORM, - .dev = { - .platform_data = serial_platform_data, - }, -}; - -/* - * Note that on Innovator-1510 UART2 pins conflict with USB2. - * By default UART2 does not work on Innovator-1510 if you have - * USB OHCI enabled. To use UART2, you must disable USB2 first. - */ -void __init omap_serial_init(void) -{ - int i; - - if (cpu_is_omap7xx()) { - serial_platform_data[0].regshift = 0; - serial_platform_data[1].regshift = 0; - serial_platform_data[0].irq = INT_7XX_UART_MODEM_1; - serial_platform_data[1].irq = INT_7XX_UART_MODEM_IRDA_2; - } - - if (cpu_is_omap15xx()) { - serial_platform_data[0].uartclk = OMAP1510_BASE_BAUD * 16; - serial_platform_data[1].uartclk = OMAP1510_BASE_BAUD * 16; - serial_platform_data[2].uartclk = OMAP1510_BASE_BAUD * 16; - } - - for (i = 0; i < ARRAY_SIZE(serial_platform_data) - 1; i++) { - - /* Don't look at UARTs higher than 2 for omap7xx */ - if (cpu_is_omap7xx() && i > 1) { - serial_platform_data[i].membase = NULL; - serial_platform_data[i].mapbase = 0; - continue; - } - - /* Static mapping, never released */ - serial_platform_data[i].membase = - ioremap(serial_platform_data[i].mapbase, SZ_2K); - if (!serial_platform_data[i].membase) { - printk(KERN_ERR "Could not ioremap uart%i\n", i); - continue; - } - switch (i) { - case 0: - uart1_ck = clk_get(NULL, "uart1_ck"); - if (IS_ERR(uart1_ck)) - printk("Could not get uart1_ck\n"); - else { - clk_enable(uart1_ck); - if (cpu_is_omap15xx()) - clk_set_rate(uart1_ck, 12000000); - } - break; - case 1: - uart2_ck = clk_get(NULL, "uart2_ck"); - if (IS_ERR(uart2_ck)) - printk("Could not get uart2_ck\n"); - else { - clk_enable(uart2_ck); - if (cpu_is_omap15xx()) - clk_set_rate(uart2_ck, 12000000); - else - clk_set_rate(uart2_ck, 48000000); - } - break; - case 2: - uart3_ck = clk_get(NULL, "uart3_ck"); - if (IS_ERR(uart3_ck)) - printk("Could not get uart3_ck\n"); - else { - clk_enable(uart3_ck); - if (cpu_is_omap15xx()) - clk_set_rate(uart3_ck, 12000000); - } - break; - } - omap_serial_reset(&serial_platform_data[i]); - } -} - -#ifdef CONFIG_OMAP_SERIAL_WAKE - -static irqreturn_t omap_serial_wake_interrupt(int irq, void *dev_id) -{ - /* Need to do something with serial port right after wake-up? */ - return IRQ_HANDLED; -} - -/* - * Reroutes serial RX lines to GPIO lines for the duration of - * sleep to allow waking up the device from serial port even - * in deep sleep. - */ -void omap_serial_wake_trigger(int enable) -{ - if (!cpu_is_omap16xx()) - return; - - if (uart1_ck != NULL) { - if (enable) - omap_cfg_reg(V14_16XX_GPIO37); - else - omap_cfg_reg(V14_16XX_UART1_RX); - } - if (uart2_ck != NULL) { - if (enable) - omap_cfg_reg(R9_16XX_GPIO18); - else - omap_cfg_reg(R9_16XX_UART2_RX); - } - if (uart3_ck != NULL) { - if (enable) - omap_cfg_reg(L14_16XX_GPIO49); - else - omap_cfg_reg(L14_16XX_UART3_RX); - } -} - -static void __init omap_serial_set_port_wakeup(int gpio_nr) -{ - int ret; - - ret = gpio_request(gpio_nr, "UART wake"); - if (ret < 0) { - printk(KERN_ERR "Could not request UART wake GPIO: %i\n", - gpio_nr); - return; - } - gpio_direction_input(gpio_nr); - ret = request_irq(gpio_to_irq(gpio_nr), &omap_serial_wake_interrupt, - IRQF_TRIGGER_RISING, "serial wakeup", NULL); - if (ret) { - gpio_free(gpio_nr); - printk(KERN_ERR "No interrupt for UART wake GPIO: %i\n", - gpio_nr); - return; - } - enable_irq_wake(gpio_to_irq(gpio_nr)); -} - -static int __init omap_serial_wakeup_init(void) -{ - if (!cpu_is_omap16xx()) - return 0; - - if (uart1_ck != NULL) - omap_serial_set_port_wakeup(37); - if (uart2_ck != NULL) - omap_serial_set_port_wakeup(18); - if (uart3_ck != NULL) - omap_serial_set_port_wakeup(49); - - return 0; -} -late_initcall(omap_serial_wakeup_init); - -#endif /* CONFIG_OMAP_SERIAL_WAKE */ - -static int __init omap_init(void) -{ - if (!cpu_class_is_omap1()) - return -ENODEV; - - return platform_device_register(&serial_device); -} -arch_initcall(omap_init); |