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Diffstat (limited to 'arch/arm/mach-omap1/serial.c')
-rw-r--r--arch/arm/mach-omap1/serial.c120
1 files changed, 47 insertions, 73 deletions
diff --git a/arch/arm/mach-omap1/serial.c b/arch/arm/mach-omap1/serial.c
index e924e0c6a4c..d1ac08016f0 100644
--- a/arch/arm/mach-omap1/serial.c
+++ b/arch/arm/mach-omap1/serial.c
@@ -1,38 +1,34 @@
/*
- * linux/arch/arm/mach-omap1/id.c
+ * linux/arch/arm/mach-omap1/serial.c
*
- * OMAP1 CPU identification code
+ * 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/config.h>
+#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/io.h>
#include <asm/mach-types.h>
-#include <asm/arch/board.h>
-#include <asm/arch/mux.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/fpga.h>
-#ifdef CONFIG_PM
-#include <asm/arch/pm.h>
-#endif
+#include <mach/mux.h>
+
+#include "pm.h"
-static struct clk * uart1_ck = NULL;
-static struct clk * uart2_ck = NULL;
-static struct clk * uart3_ck = NULL;
+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)
@@ -55,11 +51,13 @@ static inline void omap_serial_outp(struct plat_serial8250_port *p, int offset,
*/
static void __init omap_serial_reset(struct plat_serial8250_port *p)
{
- omap_serial_outp(p, UART_OMAP_MDR1, 0x07); /* disable UART */
+ 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, 0x00); /* enable UART */
+ omap_serial_outp(p, UART_OMAP_MDR1,
+ UART_OMAP_MDR1_16X_MODE); /* enable UART */
- if (!cpu_is_omap1510()) {
+ if (!cpu_is_omap15xx()) {
omap_serial_outp(p, UART_OMAP_SYSC, 0x01);
while (!(omap_serial_in(p, UART_OMAP_SYSC) & 0x01));
}
@@ -67,8 +65,7 @@ static void __init omap_serial_reset(struct plat_serial8250_port *p)
static struct plat_serial8250_port serial_platform_data[] = {
{
- .membase = (char*)IO_ADDRESS(OMAP_UART1_BASE),
- .mapbase = (unsigned long)OMAP_UART1_BASE,
+ .mapbase = OMAP1_UART1_BASE,
.irq = INT_UART1,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
@@ -76,8 +73,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
.uartclk = OMAP16XX_BASE_BAUD * 16,
},
{
- .membase = (char*)IO_ADDRESS(OMAP_UART2_BASE),
- .mapbase = (unsigned long)OMAP_UART2_BASE,
+ .mapbase = OMAP1_UART2_BASE,
.irq = INT_UART2,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
@@ -85,8 +81,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
.uartclk = OMAP16XX_BASE_BAUD * 16,
},
{
- .membase = (char*)IO_ADDRESS(OMAP_UART3_BASE),
- .mapbase = (unsigned long)OMAP_UART3_BASE,
+ .mapbase = OMAP1_UART3_BASE,
.irq = INT_UART3,
.flags = UPF_BOOT_AUTOCONF,
.iotype = UPIO_MEM,
@@ -112,34 +107,36 @@ static struct platform_device serial_device = {
void __init omap_serial_init(void)
{
int i;
- const struct omap_uart_config *info;
- if (cpu_is_omap730()) {
+ if (cpu_is_omap7xx()) {
serial_platform_data[0].regshift = 0;
serial_platform_data[1].regshift = 0;
- serial_platform_data[0].irq = INT_730_UART_MODEM_1;
- serial_platform_data[1].irq = INT_730_UART_MODEM_IRDA_2;
+ serial_platform_data[0].irq = INT_7XX_UART_MODEM_1;
+ serial_platform_data[1].irq = INT_7XX_UART_MODEM_IRDA_2;
}
- if (cpu_is_omap1510()) {
+ 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;
}
- info = omap_get_config(OMAP_TAG_UART, struct omap_uart_config);
- if (info == NULL)
- return;
+ for (i = 0; i < ARRAY_SIZE(serial_platform_data) - 1; i++) {
- for (i = 0; i < OMAP_MAX_NR_PORTS; i++) {
- unsigned char reg;
-
- if (!((1 << i) & info->enabled_uarts)) {
+ /* 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");
@@ -147,19 +144,9 @@ void __init omap_serial_init(void)
printk("Could not get uart1_ck\n");
else {
clk_enable(uart1_ck);
- if (cpu_is_omap1510())
+ if (cpu_is_omap15xx())
clk_set_rate(uart1_ck, 12000000);
}
- if (cpu_is_omap1510()) {
- omap_cfg_reg(UART1_TX);
- omap_cfg_reg(UART1_RTS);
- if (machine_is_omap_innovator()) {
- reg = fpga_read(OMAP1510_FPGA_POWER);
- reg |= OMAP1510_FPGA_PCR_COM1_EN;
- fpga_write(reg, OMAP1510_FPGA_POWER);
- udelay(10);
- }
- }
break;
case 1:
uart2_ck = clk_get(NULL, "uart2_ck");
@@ -167,21 +154,11 @@ void __init omap_serial_init(void)
printk("Could not get uart2_ck\n");
else {
clk_enable(uart2_ck);
- if (cpu_is_omap1510())
+ if (cpu_is_omap15xx())
clk_set_rate(uart2_ck, 12000000);
else
clk_set_rate(uart2_ck, 48000000);
}
- if (cpu_is_omap1510()) {
- omap_cfg_reg(UART2_TX);
- omap_cfg_reg(UART2_RTS);
- if (machine_is_omap_innovator()) {
- reg = fpga_read(OMAP1510_FPGA_POWER);
- reg |= OMAP1510_FPGA_PCR_COM2_EN;
- fpga_write(reg, OMAP1510_FPGA_POWER);
- udelay(10);
- }
- }
break;
case 2:
uart3_ck = clk_get(NULL, "uart3_ck");
@@ -189,13 +166,9 @@ void __init omap_serial_init(void)
printk("Could not get uart3_ck\n");
else {
clk_enable(uart3_ck);
- if (cpu_is_omap1510())
+ if (cpu_is_omap15xx())
clk_set_rate(uart3_ck, 12000000);
}
- if (cpu_is_omap1510()) {
- omap_cfg_reg(UART3_TX);
- omap_cfg_reg(UART3_RX);
- }
break;
}
omap_serial_reset(&serial_platform_data[i]);
@@ -204,8 +177,7 @@ void __init omap_serial_init(void)
#ifdef CONFIG_OMAP_SERIAL_WAKE
-static irqreturn_t omap_serial_wake_interrupt(int irq, void *dev_id,
- struct pt_regs *regs)
+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;
@@ -245,25 +217,25 @@ static void __init omap_serial_set_port_wakeup(int gpio_nr)
{
int ret;
- ret = omap_request_gpio(gpio_nr);
+ ret = gpio_request(gpio_nr, "UART wake");
if (ret < 0) {
printk(KERN_ERR "Could not request UART wake GPIO: %i\n",
gpio_nr);
return;
}
- omap_set_gpio_direction(gpio_nr, 1);
- ret = request_irq(OMAP_GPIO_IRQ(gpio_nr), &omap_serial_wake_interrupt,
- SA_TRIGGER_RISING, "serial wakeup", NULL);
+ 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) {
- omap_free_gpio(gpio_nr);
+ gpio_free(gpio_nr);
printk(KERN_ERR "No interrupt for UART wake GPIO: %i\n",
gpio_nr);
return;
}
- enable_irq_wake(OMAP_GPIO_IRQ(gpio_nr));
+ enable_irq_wake(gpio_to_irq(gpio_nr));
}
-static int __init omap_serial_wakeup_init(void)
+int __init omap_serial_wakeup_init(void)
{
if (!cpu_is_omap16xx())
return 0;
@@ -277,12 +249,14 @@ static int __init omap_serial_wakeup_init(void)
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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 19:51:13 +0000