diff options
Diffstat (limited to 'arch/arm/mach-at91/at91sam9rl_devices.c')
| -rw-r--r-- | arch/arm/mach-at91/at91sam9rl_devices.c | 99 |
1 files changed, 87 insertions, 12 deletions
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index e886cdfe919d..a942b9e35560 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -676,12 +676,23 @@ static struct platform_device at91sam9rl_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_PA6, 1); /* TXD0 */ at91_set_A_periph(AT91_PIN_PA7, 0); /* RXD0 */ - at91_set_A_periph(AT91_PIN_PA9, 0); /* RTS0 */ - at91_set_A_periph(AT91_PIN_PA10, 0); /* CTS0 */ + + if (pins & ATMEL_UART_RTS) + at91_set_A_periph(AT91_PIN_PA9, 0); /* RTS0 */ + if (pins & ATMEL_UART_CTS) + at91_set_A_periph(AT91_PIN_PA10, 0); /* CTS0 */ + if (pins & ATMEL_UART_DSR) + at91_set_A_periph(AT91_PIN_PD14, 0); /* DSR0 */ + if (pins & ATMEL_UART_DTR) + at91_set_A_periph(AT91_PIN_PD15, 0); /* DTR0 */ + if (pins & ATMEL_UART_DCD) + at91_set_A_periph(AT91_PIN_PD16, 0); /* DCD0 */ + if (pins & ATMEL_UART_RI) + at91_set_A_periph(AT91_PIN_PD17, 0); /* RI0 */ } static struct resource uart1_resources[] = { @@ -716,10 +727,15 @@ static struct platform_device at91sam9rl_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_PA11, 1); /* TXD1 */ at91_set_A_periph(AT91_PIN_PA12, 0); /* RXD1 */ + + if (pins & ATMEL_UART_RTS) + at91_set_B_periph(AT91_PIN_PA18, 0); /* RTS1 */ + if (pins & ATMEL_UART_CTS) + at91_set_B_periph(AT91_PIN_PA19, 0); /* CTS1 */ } static struct resource uart2_resources[] = { @@ -754,10 +770,15 @@ static struct platform_device at91sam9rl_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_PA13, 1); /* TXD2 */ at91_set_A_periph(AT91_PIN_PA14, 0); /* RXD2 */ + + if (pins & ATMEL_UART_RTS) + at91_set_A_periph(AT91_PIN_PA29, 0); /* RTS2 */ + if (pins & ATMEL_UART_CTS) + at91_set_A_periph(AT91_PIN_PA30, 0); /* CTS2 */ } static struct resource uart3_resources[] = { @@ -792,16 +813,21 @@ static struct platform_device at91sam9rl_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_A_periph(AT91_PIN_PB0, 1); /* TXD3 */ at91_set_A_periph(AT91_PIN_PB1, 0); /* RXD3 */ + + if (pins & ATMEL_UART_RTS) + at91_set_B_periph(AT91_PIN_PD4, 0); /* RTS3 */ + if (pins & ATMEL_UART_CTS) + at91_set_B_periph(AT91_PIN_PD3, 0); /* CTS3 */ } 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; @@ -809,22 +835,22 @@ 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] = &at91sam9rl_uart0_device; at91_clock_associate("usart0_clk", &at91sam9rl_uart0_device.dev, "usart"); break; case 1: - configure_usart1_pins(); + configure_usart1_pins(0); at91_uarts[i] = &at91sam9rl_uart1_device; at91_clock_associate("usart1_clk", &at91sam9rl_uart1_device.dev, "usart"); break; case 2: - configure_usart2_pins(); + configure_usart2_pins(0); at91_uarts[i] = &at91sam9rl_uart2_device; at91_clock_associate("usart2_clk", &at91sam9rl_uart2_device.dev, "usart"); break; case 3: - configure_usart3_pins(); + configure_usart3_pins(0); at91_uarts[i] = &at91sam9rl_uart3_device; at91_clock_associate("usart3_clk", &at91sam9rl_uart3_device.dev, "usart"); break; @@ -846,6 +872,53 @@ 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 = &at91sam9rl_dbgu_device; + configure_dbgu_pins(); + at91_clock_associate("mck", &pdev->dev, "usart"); + break; + case AT91SAM9RL_ID_US0: + pdev = &at91sam9rl_uart0_device; + configure_usart0_pins(pins); + at91_clock_associate("usart0_clk", &pdev->dev, "usart"); + break; + case AT91SAM9RL_ID_US1: + pdev = &at91sam9rl_uart1_device; + configure_usart1_pins(pins); + at91_clock_associate("usart1_clk", &pdev->dev, "usart"); + break; + case AT91SAM9RL_ID_US2: + pdev = &at91sam9rl_uart2_device; + configure_usart2_pins(pins); + at91_clock_associate("usart2_clk", &pdev->dev, "usart"); + break; + case AT91SAM9RL_ID_US3: + pdev = &at91sam9rl_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; @@ -856,7 +929,9 @@ 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 |