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Diffstat (limited to 'arch/arm/mach-at91/at91rm9200_devices.c')
-rw-r--r--arch/arm/mach-at91/at91rm9200_devices.c114
1 files changed, 92 insertions, 22 deletions
diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index a2647265c214..23966229ea9a 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -884,17 +884,21 @@ static struct platform_device at91rm9200_uart0_device = {
.num_resources = ARRAY_SIZE(uart0_resources),
};
-static inline void configure_usart0_pins(void)
+static inline void configure_usart0_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
- at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
- /*
- * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
- * We need to drive the pin manually. Default is off (RTS is active low).
- */
- at91_set_gpio_output(AT91_PIN_PA21, 1);
+ if (pins & ATMEL_UART_CTS)
+ at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
+
+ if (pins & ATMEL_UART_RTS) {
+ /*
+ * AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
+ * We need to drive the pin manually. Default is off (RTS is active low).
+ */
+ at91_set_gpio_output(AT91_PIN_PA21, 1);
+ }
}
static struct resource uart1_resources[] = {
@@ -929,16 +933,23 @@ static struct platform_device at91rm9200_uart1_device = {
.num_resources = ARRAY_SIZE(uart1_resources),
};
-static inline void configure_usart1_pins(void)
+static inline void configure_usart1_pins(unsigned pins)
{
- at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
- at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
- at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
- at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
- at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
- at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
+
+ if (pins & ATMEL_UART_RI)
+ at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
+ if (pins & ATMEL_UART_DTR)
+ at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
+ if (pins & ATMEL_UART_DCD)
+ at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
+ if (pins & ATMEL_UART_CTS)
+ at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
+ if (pins & ATMEL_UART_DSR)
+ at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
+ if (pins & ATMEL_UART_RTS)
+ at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
}
static struct resource uart2_resources[] = {
@@ -973,10 +984,15 @@ static struct platform_device at91rm9200_uart2_device = {
.num_resources = ARRAY_SIZE(uart2_resources),
};
-static inline void configure_usart2_pins(void)
+static inline void configure_usart2_pins(unsigned pins)
{
at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
+
+ if (pins & ATMEL_UART_CTS)
+ at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
+ if (pins & ATMEL_UART_RTS)
+ at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
}
static struct resource uart3_resources[] = {
@@ -1011,16 +1027,21 @@ static struct platform_device at91rm9200_uart3_device = {
.num_resources = ARRAY_SIZE(uart3_resources),
};
-static inline void configure_usart3_pins(void)
+static inline void configure_usart3_pins(unsigned pins)
{
at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
+
+ if (pins & ATMEL_UART_CTS)
+ at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
+ if (pins & ATMEL_UART_RTS)
+ at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
}
static struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
struct platform_device *atmel_default_console_device; /* the serial console device */
-void __init at91_init_serial(struct at91_uart_config *config)
+void __init __deprecated at91_init_serial(struct at91_uart_config *config)
{
int i;
@@ -1028,22 +1049,22 @@ void __init at91_init_serial(struct at91_uart_config *config)
for (i = 0; i < config->nr_tty; i++) {
switch (config->tty_map[i]) {
case 0:
- configure_usart0_pins();
+ configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
at91_uarts[i] = &at91rm9200_uart0_device;
at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
break;
case 1:
- configure_usart1_pins();
+ configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
at91_uarts[i] = &at91rm9200_uart1_device;
at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
break;
case 2:
- configure_usart2_pins();
+ configure_usart2_pins(0);
at91_uarts[i] = &at91rm9200_uart2_device;
at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
break;
case 3:
- configure_usart3_pins();
+ configure_usart3_pins(0);
at91_uarts[i] = &at91rm9200_uart3_device;
at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
break;
@@ -1065,6 +1086,53 @@ void __init at91_init_serial(struct at91_uart_config *config)
printk(KERN_INFO "AT91: No default serial console defined.\n");
}
+void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
+{
+ struct platform_device *pdev;
+
+ switch (id) {
+ case 0: /* DBGU */
+ pdev = &at91rm9200_dbgu_device;
+ configure_dbgu_pins();
+ at91_clock_associate("mck", &pdev->dev, "usart");
+ break;
+ case AT91RM9200_ID_US0:
+ pdev = &at91rm9200_uart0_device;
+ configure_usart0_pins(pins);
+ at91_clock_associate("usart0_clk", &pdev->dev, "usart");
+ break;
+ case AT91RM9200_ID_US1:
+ pdev = &at91rm9200_uart1_device;
+ configure_usart1_pins(pins);
+ at91_clock_associate("usart1_clk", &pdev->dev, "usart");
+ break;
+ case AT91RM9200_ID_US2:
+ pdev = &at91rm9200_uart2_device;
+ configure_usart2_pins(pins);
+ at91_clock_associate("usart2_clk", &pdev->dev, "usart");
+ break;
+ case AT91RM9200_ID_US3:
+ pdev = &at91rm9200_uart3_device;
+ configure_usart3_pins(pins);
+ at91_clock_associate("usart3_clk", &pdev->dev, "usart");
+ break;
+ default:
+ return;
+ }
+ pdev->id = portnr; /* update to mapped ID */
+
+ if (portnr < ATMEL_MAX_UART)
+ at91_uarts[portnr] = pdev;
+}
+
+void __init at91_set_serial_console(unsigned portnr)
+{
+ if (portnr < ATMEL_MAX_UART)
+ atmel_default_console_device = at91_uarts[portnr];
+ if (!atmel_default_console_device)
+ printk(KERN_INFO "AT91: No default serial console defined.\n");
+}
+
void __init at91_add_device_serial(void)
{
int i;
@@ -1075,7 +1143,9 @@ void __init at91_add_device_serial(void)
}
}
#else
-void __init at91_init_serial(struct at91_uart_config *config) {}
+void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
+void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
+void __init at91_set_serial_console(unsigned portnr) {}
void __init at91_add_device_serial(void) {}
#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 08:53:31 +0100