#include <linux/tty.h>
#include <linux/serial_8250.h>
#include <linux/serial_reg.h>
+#include <linux/clk.h>
#include <asm/io.h>
#include <asm/mach-types.h>
-#include <asm/hardware/clock.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
static struct clk * uart1_ck = NULL;
static struct clk * uart2_ck = NULL;
static struct platform_device serial_device = {
.name = "serial8250",
- .id = 0,
+ .id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = serial_platform_data,
},
* 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(int ports[OMAP_MAX_NR_PORTS])
+void __init omap_serial_init(void)
{
int i;
+ const struct omap_uart_config *info;
if (cpu_is_omap730()) {
serial_platform_data[0].regshift = 0;
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 < OMAP_MAX_NR_PORTS; i++) {
unsigned char reg;
- if (ports[i] == 0) {
+ if (!((1 << i) & info->enabled_uarts)) {
serial_platform_data[i].membase = NULL;
serial_platform_data[i].mapbase = 0;
continue;
if (IS_ERR(uart1_ck))
printk("Could not get uart1_ck\n");
else {
- clk_use(uart1_ck);
+ clk_enable(uart1_ck);
if (cpu_is_omap1510())
clk_set_rate(uart1_ck, 12000000);
}
if (IS_ERR(uart2_ck))
printk("Could not get uart2_ck\n");
else {
- clk_use(uart2_ck);
+ clk_enable(uart2_ck);
if (cpu_is_omap1510())
clk_set_rate(uart2_ck, 12000000);
else
if (IS_ERR(uart3_ck))
printk("Could not get uart3_ck\n");
else {
- clk_use(uart3_ck);
+ clk_enable(uart3_ck);
if (cpu_is_omap1510())
clk_set_rate(uart3_ck, 12000000);
}
}
}
+#ifdef CONFIG_OMAP_SERIAL_WAKE
+
+static irqreturn_t omap_serial_wake_interrupt(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ /* 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 = omap_request_gpio(gpio_nr);
+ 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);
+ if (ret) {
+ omap_free_gpio(gpio_nr);
+ printk(KERN_ERR "No interrupt for UART wake GPIO: %i\n",
+ gpio_nr);
+ return;
+ }
+ enable_irq_wake(OMAP_GPIO_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)
{
return platform_device_register(&serial_device);