diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-davinci/serial.c')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-davinci/serial.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-davinci/serial.c b/ANDROID_3.4.5/arch/arm/mach-davinci/serial.c deleted file mode 100644 index 1875740f..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-davinci/serial.c +++ /dev/null @@ -1,115 +0,0 @@ -/* - * TI DaVinci serial driver - * - * Copyright (C) 2006 Texas Instruments. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/serial_8250.h> -#include <linux/serial_reg.h> -#include <linux/platform_device.h> -#include <linux/delay.h> -#include <linux/clk.h> -#include <linux/io.h> - -#include <mach/serial.h> -#include <mach/cputype.h> - -static inline unsigned int serial_read_reg(struct plat_serial8250_port *up, - int offset) -{ - offset <<= up->regshift; - - WARN_ONCE(!up->membase, "unmapped read: uart[%d]\n", offset); - - return (unsigned int)__raw_readl(up->membase + offset); -} - -static inline void serial_write_reg(struct plat_serial8250_port *p, int offset, - int value) -{ - offset <<= p->regshift; - - WARN_ONCE(!p->membase, "unmapped write: uart[%d]\n", offset); - - __raw_writel(value, p->membase + offset); -} - -static void __init davinci_serial_reset(struct plat_serial8250_port *p) -{ - unsigned int pwremu = 0; - - serial_write_reg(p, UART_IER, 0); /* disable all interrupts */ - - /* reset both transmitter and receiver: bits 14,13 = UTRST, URRST */ - serial_write_reg(p, UART_DAVINCI_PWREMU, pwremu); - mdelay(10); - - pwremu |= (0x3 << 13); - pwremu |= 0x1; - serial_write_reg(p, UART_DAVINCI_PWREMU, pwremu); - - if (cpu_is_davinci_dm646x()) - serial_write_reg(p, UART_DM646X_SCR, - UART_DM646X_SCR_TX_WATERMARK); -} - -int __init davinci_serial_init(struct davinci_uart_config *info) -{ - int i; - char name[16]; - struct clk *uart_clk; - struct davinci_soc_info *soc_info = &davinci_soc_info; - struct device *dev = &soc_info->serial_dev->dev; - struct plat_serial8250_port *p = dev->platform_data; - - /* - * Make sure the serial ports are muxed on at this point. - * You have to mux them off in device drivers later on if not needed. - */ - for (i = 0; p->flags; i++, p++) { - if (!(info->enabled_uarts & (1 << i))) - continue; - - sprintf(name, "uart%d", i); - uart_clk = clk_get(dev, name); - if (IS_ERR(uart_clk)) { - printk(KERN_ERR "%s:%d: failed to get UART%d clock\n", - __func__, __LINE__, i); - continue; - } - - clk_enable(uart_clk); - p->uartclk = clk_get_rate(uart_clk); - - if (!p->membase && p->mapbase) { - p->membase = ioremap(p->mapbase, SZ_4K); - - if (p->membase) - p->flags &= ~UPF_IOREMAP; - else - pr_err("uart regs ioremap failed\n"); - } - - if (p->membase && p->type != PORT_AR7) - davinci_serial_reset(p); - } - - return platform_device_register(soc_info->serial_dev); -} |