forked from Minki/linux
[ARM] 4757/1: [AT91] UART initialization
Modify the UART initialization to allow the board-initialization code to specify which pins are connected, and which pins should therefore be initialized. The current at91_init_serial() will continue to work as-is, but is marked as "deprecated" and will be removed once the board-specific files has been updated to use the new interface. As in the AVR32 code, we assume that the TX and RX pins will always be initialized. Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Andrew Victor
Russell King
parent
b7b272a882
commit
c8f385a631
@ -884,17 +884,21 @@ static struct platform_device at91rm9200_uart0_device = {
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.num_resources = ARRAY_SIZE(uart0_resources),
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};
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static inline void configure_usart0_pins(void)
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static inline void configure_usart0_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PA17, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PA18, 0); /* RXD0 */
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at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
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/*
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* AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
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* We need to drive the pin manually. Default is off (RTS is active low).
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*/
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at91_set_gpio_output(AT91_PIN_PA21, 1);
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PA20, 0); /* CTS0 */
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if (pins & ATMEL_UART_RTS) {
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/*
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* AT91RM9200 Errata #39 - RTS0 is not internally connected to PA21.
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* We need to drive the pin manually. Default is off (RTS is active low).
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*/
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at91_set_gpio_output(AT91_PIN_PA21, 1);
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}
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}
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static struct resource uart1_resources[] = {
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@ -929,16 +933,23 @@ static struct platform_device at91rm9200_uart1_device = {
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.num_resources = ARRAY_SIZE(uart1_resources),
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};
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static inline void configure_usart1_pins(void)
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static inline void configure_usart1_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
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at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
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at91_set_A_periph(AT91_PIN_PB20, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PB21, 0); /* RXD1 */
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at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
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at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
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at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
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at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
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if (pins & ATMEL_UART_RI)
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at91_set_A_periph(AT91_PIN_PB18, 0); /* RI1 */
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if (pins & ATMEL_UART_DTR)
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at91_set_A_periph(AT91_PIN_PB19, 0); /* DTR1 */
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if (pins & ATMEL_UART_DCD)
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at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD1 */
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PB24, 0); /* CTS1 */
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if (pins & ATMEL_UART_DSR)
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at91_set_A_periph(AT91_PIN_PB25, 0); /* DSR1 */
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if (pins & ATMEL_UART_RTS)
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at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS1 */
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}
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static struct resource uart2_resources[] = {
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@ -973,10 +984,15 @@ static struct platform_device at91rm9200_uart2_device = {
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.num_resources = ARRAY_SIZE(uart2_resources),
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};
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static inline void configure_usart2_pins(void)
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static inline void configure_usart2_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PA22, 0); /* RXD2 */
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at91_set_A_periph(AT91_PIN_PA23, 1); /* TXD2 */
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if (pins & ATMEL_UART_CTS)
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at91_set_B_periph(AT91_PIN_PA30, 0); /* CTS2 */
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if (pins & ATMEL_UART_RTS)
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at91_set_B_periph(AT91_PIN_PA31, 0); /* RTS2 */
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}
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static struct resource uart3_resources[] = {
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@ -1011,16 +1027,21 @@ static struct platform_device at91rm9200_uart3_device = {
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.num_resources = ARRAY_SIZE(uart3_resources),
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};
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static inline void configure_usart3_pins(void)
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static inline void configure_usart3_pins(unsigned pins)
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{
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at91_set_B_periph(AT91_PIN_PA5, 1); /* TXD3 */
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at91_set_B_periph(AT91_PIN_PA6, 0); /* RXD3 */
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if (pins & ATMEL_UART_CTS)
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at91_set_B_periph(AT91_PIN_PB1, 0); /* CTS3 */
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if (pins & ATMEL_UART_RTS)
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at91_set_B_periph(AT91_PIN_PB0, 0); /* RTS3 */
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}
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static struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
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struct platform_device *atmel_default_console_device; /* the serial console device */
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void __init at91_init_serial(struct at91_uart_config *config)
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void __init __deprecated at91_init_serial(struct at91_uart_config *config)
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{
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int i;
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@ -1028,22 +1049,22 @@ void __init at91_init_serial(struct at91_uart_config *config)
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for (i = 0; i < config->nr_tty; i++) {
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switch (config->tty_map[i]) {
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case 0:
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configure_usart0_pins();
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configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
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at91_uarts[i] = &at91rm9200_uart0_device;
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at91_clock_associate("usart0_clk", &at91rm9200_uart0_device.dev, "usart");
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break;
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case 1:
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configure_usart1_pins();
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configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
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at91_uarts[i] = &at91rm9200_uart1_device;
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at91_clock_associate("usart1_clk", &at91rm9200_uart1_device.dev, "usart");
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break;
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case 2:
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configure_usart2_pins();
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configure_usart2_pins(0);
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at91_uarts[i] = &at91rm9200_uart2_device;
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at91_clock_associate("usart2_clk", &at91rm9200_uart2_device.dev, "usart");
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break;
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case 3:
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configure_usart3_pins();
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configure_usart3_pins(0);
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at91_uarts[i] = &at91rm9200_uart3_device;
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at91_clock_associate("usart3_clk", &at91rm9200_uart3_device.dev, "usart");
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break;
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@ -1065,6 +1086,53 @@ void __init at91_init_serial(struct at91_uart_config *config)
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printk(KERN_INFO "AT91: No default serial console defined.\n");
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}
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void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
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{
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struct platform_device *pdev;
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switch (id) {
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case 0: /* DBGU */
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pdev = &at91rm9200_dbgu_device;
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configure_dbgu_pins();
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at91_clock_associate("mck", &pdev->dev, "usart");
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break;
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case AT91RM9200_ID_US0:
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pdev = &at91rm9200_uart0_device;
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configure_usart0_pins(pins);
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at91_clock_associate("usart0_clk", &pdev->dev, "usart");
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break;
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case AT91RM9200_ID_US1:
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pdev = &at91rm9200_uart1_device;
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configure_usart1_pins(pins);
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at91_clock_associate("usart1_clk", &pdev->dev, "usart");
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break;
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case AT91RM9200_ID_US2:
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pdev = &at91rm9200_uart2_device;
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configure_usart2_pins(pins);
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at91_clock_associate("usart2_clk", &pdev->dev, "usart");
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break;
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case AT91RM9200_ID_US3:
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pdev = &at91rm9200_uart3_device;
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configure_usart3_pins(pins);
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at91_clock_associate("usart3_clk", &pdev->dev, "usart");
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break;
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default:
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return;
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}
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pdev->id = portnr; /* update to mapped ID */
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if (portnr < ATMEL_MAX_UART)
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at91_uarts[portnr] = pdev;
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}
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void __init at91_set_serial_console(unsigned portnr)
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{
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if (portnr < ATMEL_MAX_UART)
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atmel_default_console_device = at91_uarts[portnr];
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if (!atmel_default_console_device)
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printk(KERN_INFO "AT91: No default serial console defined.\n");
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}
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void __init at91_add_device_serial(void)
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{
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int i;
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@ -1075,7 +1143,9 @@ void __init at91_add_device_serial(void)
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}
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}
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#else
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void __init at91_init_serial(struct at91_uart_config *config) {}
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void __init __deprecated at91_init_serial(struct at91_uart_config *config) {}
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void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {}
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void __init at91_set_serial_console(unsigned portnr) {}
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void __init at91_add_device_serial(void) {}
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#endif
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@ -760,16 +760,23 @@ static struct platform_device at91sam9260_uart0_device = {
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.num_resources = ARRAY_SIZE(uart0_resources),
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};
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static inline void configure_usart0_pins(void)
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static inline void configure_usart0_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PB4, 1); /* TXD0 */
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at91_set_A_periph(AT91_PIN_PB5, 0); /* RXD0 */
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at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
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at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
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at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
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at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
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at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
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at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
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if (pins & ATMEL_UART_RTS)
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at91_set_A_periph(AT91_PIN_PB26, 0); /* RTS0 */
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PB27, 0); /* CTS0 */
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if (pins & ATMEL_UART_DTR)
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at91_set_A_periph(AT91_PIN_PB24, 0); /* DTR0 */
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if (pins & ATMEL_UART_DSR)
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at91_set_A_periph(AT91_PIN_PB22, 0); /* DSR0 */
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if (pins & ATMEL_UART_DCD)
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at91_set_A_periph(AT91_PIN_PB23, 0); /* DCD0 */
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if (pins & ATMEL_UART_RI)
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at91_set_A_periph(AT91_PIN_PB25, 0); /* RI0 */
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}
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static struct resource uart1_resources[] = {
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@ -804,12 +811,15 @@ static struct platform_device at91sam9260_uart1_device = {
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.num_resources = ARRAY_SIZE(uart1_resources),
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};
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static inline void configure_usart1_pins(void)
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static inline void configure_usart1_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PB6, 1); /* TXD1 */
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at91_set_A_periph(AT91_PIN_PB7, 0); /* RXD1 */
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at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
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at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
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if (pins & ATMEL_UART_RTS)
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at91_set_A_periph(AT91_PIN_PB28, 0); /* RTS1 */
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PB29, 0); /* CTS1 */
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}
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static struct resource uart2_resources[] = {
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@ -844,10 +854,15 @@ static struct platform_device at91sam9260_uart2_device = {
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.num_resources = ARRAY_SIZE(uart2_resources),
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};
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static inline void configure_usart2_pins(void)
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static inline void configure_usart2_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PB8, 1); /* TXD2 */
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at91_set_A_periph(AT91_PIN_PB9, 0); /* RXD2 */
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if (pins & ATMEL_UART_RTS)
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at91_set_A_periph(AT91_PIN_PA4, 0); /* RTS2 */
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if (pins & ATMEL_UART_CTS)
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at91_set_A_periph(AT91_PIN_PA5, 0); /* CTS2 */
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}
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static struct resource uart3_resources[] = {
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@ -882,10 +897,15 @@ static struct platform_device at91sam9260_uart3_device = {
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.num_resources = ARRAY_SIZE(uart3_resources),
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};
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static inline void configure_usart3_pins(void)
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static inline void configure_usart3_pins(unsigned pins)
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{
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at91_set_A_periph(AT91_PIN_PB10, 1); /* TXD3 */
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at91_set_A_periph(AT91_PIN_PB11, 0); /* RXD3 */
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if (pins & ATMEL_UART_RTS)
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at91_set_B_periph(AT91_PIN_PC8, 0); /* RTS3 */
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if (pins & ATMEL_UART_CTS)
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at91_set_B_periph(AT91_PIN_PC10, 0); /* CTS3 */
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}
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static struct resource uart4_resources[] = {
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@ -967,7 +987,7 @@ static inline void configure_usart5_pins(void)
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static struct platform_device *at91_uarts[ATMEL_MAX_UART]; /* the UARTs to use */
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struct platform_device *atmel_default_console_device; /* the serial console device */
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void __init at91_init_serial(struct at91_uart_config *config)
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void __init __deprecated at91_init_serial(struct at91_uart_config *config)
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{
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int i;
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@ -975,22 +995,22 @@ void __init at91_init_serial(struct at91_uart_config *config)
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for (i = 0; i < config->nr_tty; i++) {
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switch (config->tty_map[i]) {
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case 0:
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configure_usart0_pins();
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configure_usart0_pins(ATMEL_UART_CTS | ATMEL_UART_RTS | ATMEL_UART_DSR | ATMEL_UART_DTR | ATMEL_UART_DCD | ATMEL_UART_RI);
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at91_uarts[i] = &at91sam9260_uart0_device;
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at91_clock_associate("usart0_clk", &at91sam9260_uart0_device.dev, "usart");
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break;
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case 1:
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configure_usart1_pins();
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configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
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at91_uarts[i] = &at91sam9260_uart1_device;
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at91_clock_associate("usart1_clk", &at91sam9260_uart1_device.dev, "usart");
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break;
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case 2:
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configure_usart2_pins();
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configure_usart2_pins(0);
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at91_uarts[i] = &at91sam9260_uart2_device;
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at91_clock_associate("usart2_clk", &at91sam9260_uart2_device.dev, "usart");
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break;
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case 3:
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configure_usart3_pins();
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configure_usart3_pins(0);
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at91_uarts[i] = &at91sam9260_uart3_device;
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at91_clock_associate("usart3_clk", &at91sam9260_uart3_device.dev, "usart");
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break;
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@ -1022,6 +1042,63 @@ void __init at91_init_serial(struct at91_uart_config *config)
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printk(KERN_INFO "AT91: No default serial console defined.\n");
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}
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void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins)
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{
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struct platform_device *pdev;
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switch (id) {
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case 0: /* DBGU */
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pdev = &at91sam9260_dbgu_device;
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configure_dbgu_pins();
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at91_clock_associate("mck", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US0:
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pdev = &at91sam9260_uart0_device;
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configure_usart0_pins(pins);
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at91_clock_associate("usart0_clk", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US1:
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pdev = &at91sam9260_uart1_device;
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configure_usart1_pins(pins);
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at91_clock_associate("usart1_clk", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US2:
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pdev = &at91sam9260_uart2_device;
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configure_usart2_pins(pins);
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at91_clock_associate("usart2_clk", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US3:
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pdev = &at91sam9260_uart3_device;
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configure_usart3_pins(pins);
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at91_clock_associate("usart3_clk", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US4:
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pdev = &at91sam9260_uart4_device;
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configure_usart4_pins();
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at91_clock_associate("usart4_clk", &pdev->dev, "usart");
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break;
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case AT91SAM9260_ID_US5:
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pdev = &at91sam9260_uart5_device;
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configure_usart5_pins();
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at91_clock_associate("usart5_clk", &pdev->dev, "usart");
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break;
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default:
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return;
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}
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pdev->id = portnr; /* update to mapped ID */
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if (portnr < ATMEL_MAX_UART)
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at91_uarts[portnr] = pdev;
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}
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void __init at91_set_serial_console(unsigned portnr)
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{
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if (portnr < ATMEL_MAX_UART)
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atmel_default_console_device = at91_uarts[portnr];
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if (!atmel_default_console_device)
|
||||
printk(KERN_INFO "AT91: No default serial console defined.\n");
|
||||
}
|
||||
|
||||
void __init at91_add_device_serial(void)
|
||||
{
|
||||
int i;
|
||||
@ -1032,7 +1109,9 @@ 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
|
||||
|
||||
|
||||
@ -867,12 +867,15 @@ static struct platform_device at91sam9261_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_PC8, 1); /* TXD0 */
|
||||
at91_set_A_periph(AT91_PIN_PC9, 0); /* RXD0 */
|
||||
at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
|
||||
at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_A_periph(AT91_PIN_PC10, 0); /* RTS0 */
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_A_periph(AT91_PIN_PC11, 0); /* CTS0 */
|
||||
}
|
||||
|
||||
static struct resource uart1_resources[] = {
|
||||
@ -907,10 +910,15 @@ static struct platform_device at91sam9261_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_PC12, 1); /* TXD1 */
|
||||
at91_set_A_periph(AT91_PIN_PC13, 0); /* RXD1 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_B_periph(AT91_PIN_PA12, 0); /* RTS1 */
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_B_periph(AT91_PIN_PA13, 0); /* CTS1 */
|
||||
}
|
||||
|
||||
static struct resource uart2_resources[] = {
|
||||
@ -945,16 +953,21 @@ static struct platform_device at91sam9261_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_PC15, 0); /* RXD2 */
|
||||
at91_set_A_periph(AT91_PIN_PC14, 1); /* TXD2 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_B_periph(AT91_PIN_PA15, 0); /* RTS2*/
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_B_periph(AT91_PIN_PA16, 0); /* CTS2 */
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
@ -962,17 +975,17 @@ 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] = &at91sam9261_uart0_device;
|
||||
at91_clock_associate("usart0_clk", &at91sam9261_uart0_device.dev, "usart");
|
||||
break;
|
||||
case 1:
|
||||
configure_usart1_pins();
|
||||
configure_usart1_pins(0);
|
||||
at91_uarts[i] = &at91sam9261_uart1_device;
|
||||
at91_clock_associate("usart1_clk", &at91sam9261_uart1_device.dev, "usart");
|
||||
break;
|
||||
case 2:
|
||||
configure_usart2_pins();
|
||||
configure_usart2_pins(0);
|
||||
at91_uarts[i] = &at91sam9261_uart2_device;
|
||||
at91_clock_associate("usart2_clk", &at91sam9261_uart2_device.dev, "usart");
|
||||
break;
|
||||
@ -994,6 +1007,48 @@ 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 = &at91sam9261_dbgu_device;
|
||||
configure_dbgu_pins();
|
||||
at91_clock_associate("mck", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9261_ID_US0:
|
||||
pdev = &at91sam9261_uart0_device;
|
||||
configure_usart0_pins(pins);
|
||||
at91_clock_associate("usart0_clk", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9261_ID_US1:
|
||||
pdev = &at91sam9261_uart1_device;
|
||||
configure_usart1_pins(pins);
|
||||
at91_clock_associate("usart1_clk", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9261_ID_US2:
|
||||
pdev = &at91sam9261_uart2_device;
|
||||
configure_usart2_pins(pins);
|
||||
at91_clock_associate("usart2_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;
|
||||
@ -1004,7 +1059,9 @@ 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
|
||||
|
||||
|
||||
@ -1071,12 +1071,15 @@ static struct platform_device at91sam9263_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_PA26, 1); /* TXD0 */
|
||||
at91_set_A_periph(AT91_PIN_PA27, 0); /* RXD0 */
|
||||
at91_set_A_periph(AT91_PIN_PA28, 0); /* RTS0 */
|
||||
at91_set_A_periph(AT91_PIN_PA29, 0); /* CTS0 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_A_periph(AT91_PIN_PA28, 0); /* RTS0 */
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_A_periph(AT91_PIN_PA29, 0); /* CTS0 */
|
||||
}
|
||||
|
||||
static struct resource uart1_resources[] = {
|
||||
@ -1111,12 +1114,15 @@ static struct platform_device at91sam9263_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_PD0, 1); /* TXD1 */
|
||||
at91_set_A_periph(AT91_PIN_PD1, 0); /* RXD1 */
|
||||
at91_set_B_periph(AT91_PIN_PD7, 0); /* RTS1 */
|
||||
at91_set_B_periph(AT91_PIN_PD8, 0); /* CTS1 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_B_periph(AT91_PIN_PD7, 0); /* RTS1 */
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_B_periph(AT91_PIN_PD8, 0); /* CTS1 */
|
||||
}
|
||||
|
||||
static struct resource uart2_resources[] = {
|
||||
@ -1151,18 +1157,21 @@ static struct platform_device at91sam9263_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_PD2, 1); /* TXD2 */
|
||||
at91_set_A_periph(AT91_PIN_PD3, 0); /* RXD2 */
|
||||
at91_set_B_periph(AT91_PIN_PD5, 0); /* RTS2 */
|
||||
at91_set_B_periph(AT91_PIN_PD6, 0); /* CTS2 */
|
||||
|
||||
if (pins & ATMEL_UART_RTS)
|
||||
at91_set_B_periph(AT91_PIN_PD5, 0); /* RTS2 */
|
||||
if (pins & ATMEL_UART_CTS)
|
||||
at91_set_B_periph(AT91_PIN_PD6, 0); /* CTS2 */
|
||||
}
|
||||
|
||||
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;
|
||||
|
||||
@ -1170,17 +1179,17 @@ 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] = &at91sam9263_uart0_device;
|
||||
at91_clock_associate("usart0_clk", &at91sam9263_uart0_device.dev, "usart");
|
||||
break;
|
||||
case 1:
|
||||
configure_usart1_pins();
|
||||
configure_usart1_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
|
||||
at91_uarts[i] = &at91sam9263_uart1_device;
|
||||
at91_clock_associate("usart1_clk", &at91sam9263_uart1_device.dev, "usart");
|
||||
break;
|
||||
case 2:
|
||||
configure_usart2_pins();
|
||||
configure_usart2_pins(ATMEL_UART_CTS | ATMEL_UART_RTS);
|
||||
at91_uarts[i] = &at91sam9263_uart2_device;
|
||||
at91_clock_associate("usart2_clk", &at91sam9263_uart2_device.dev, "usart");
|
||||
break;
|
||||
@ -1202,6 +1211,48 @@ 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 = &at91sam9263_dbgu_device;
|
||||
configure_dbgu_pins();
|
||||
at91_clock_associate("mck", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9263_ID_US0:
|
||||
pdev = &at91sam9263_uart0_device;
|
||||
configure_usart0_pins(pins);
|
||||
at91_clock_associate("usart0_clk", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9263_ID_US1:
|
||||
pdev = &at91sam9263_uart1_device;
|
||||
configure_usart1_pins(pins);
|
||||
at91_clock_associate("usart1_clk", &pdev->dev, "usart");
|
||||
break;
|
||||
case AT91SAM9263_ID_US2:
|
||||
pdev = &at91sam9263_uart2_device;
|
||||
configure_usart2_pins(pins);
|
||||
at91_clock_associate("usart2_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;
|
||||
@ -1213,6 +1264,8 @@ void __init at91_add_device_serial(void)
|
||||
}
|
||||
#else
|
||||
void __init 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
|
||||
|
||||
|
||||
@ -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
|
||||
|
||||
|
||||
@ -101,13 +101,23 @@ extern void __init at91_add_device_i2c(struct i2c_board_info *devices, int nr_de
|
||||
extern void __init at91_add_device_spi(struct spi_board_info *devices, int nr_devices);
|
||||
|
||||
/* Serial */
|
||||
#define ATMEL_UART_CTS 0x01
|
||||
#define ATMEL_UART_RTS 0x02
|
||||
#define ATMEL_UART_DSR 0x04
|
||||
#define ATMEL_UART_DTR 0x08
|
||||
#define ATMEL_UART_DCD 0x10
|
||||
#define ATMEL_UART_RI 0x20
|
||||
|
||||
extern void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins);
|
||||
extern void __init at91_set_serial_console(unsigned portnr);
|
||||
|
||||
struct at91_uart_config {
|
||||
unsigned short console_tty; /* tty number of serial console */
|
||||
unsigned short nr_tty; /* number of serial tty's */
|
||||
short tty_map[]; /* map UART to tty number */
|
||||
};
|
||||
extern struct platform_device *atmel_default_console_device;
|
||||
extern void __init at91_init_serial(struct at91_uart_config *config);
|
||||
extern void __init __deprecated at91_init_serial(struct at91_uart_config *config);
|
||||
|
||||
struct atmel_uart_data {
|
||||
short use_dma_tx; /* use transmit DMA? */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user