From: Peter Ma Date: Tue, 31 Mar 2009 17:31:02 +0000 (-0700) Subject: avr32: add RTS/CTS/CLK pin selection for the USARTs X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=bf4861cf3e7df123c0c62f00ae2c301c292f669c;p=linux-2.6-omap-h63xx.git avr32: add RTS/CTS/CLK pin selection for the USARTs Adds extra parameter to AT32 at32_map_usart(), so as to reserve RTS/CTS/CLK pins. All boards under arch/avr32/boards have been updated (trivial change), but not all have been tested. Signed-off-by: Peter Ma Signed-off-by: Haavard Skinnemoen --- diff --git a/arch/avr32/boards/atngw100/setup.c b/arch/avr32/boards/atngw100/setup.c index feac0035800..5b022aad4bd 100644 --- a/arch/avr32/boards/atngw100/setup.c +++ b/arch/avr32/boards/atngw100/setup.c @@ -118,7 +118,7 @@ static void __init set_hw_addr(struct platform_device *pdev) void __init setup_board(void) { - at32_map_usart(1, 0); /* USART 1: /dev/ttyS0, DB9 */ + at32_map_usart(1, 0, 0); /* USART 1: /dev/ttyS0, DB9 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c index 1f33a106905..2adc261c9e3 100644 --- a/arch/avr32/boards/atstk1000/atstk1002.c +++ b/arch/avr32/boards/atstk1000/atstk1002.c @@ -252,12 +252,12 @@ static void __init atstk1002_setup_extdac(void) void __init setup_board(void) { #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM - at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */ + at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */ #else - at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */ + at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */ #endif /* USART 2/unused: expansion connector */ - at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */ + at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/atstk1000/atstk1003.c b/arch/avr32/boards/atstk1000/atstk1003.c index b3a23c88bcf..ff7e2329882 100644 --- a/arch/avr32/boards/atstk1000/atstk1003.c +++ b/arch/avr32/boards/atstk1000/atstk1003.c @@ -115,12 +115,12 @@ static void __init atstk1003_setup_extdac(void) void __init setup_board(void) { #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM - at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */ + at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */ #else - at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */ + at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */ #endif /* USART 2/unused: expansion connector */ - at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */ + at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/atstk1000/atstk1004.c b/arch/avr32/boards/atstk1000/atstk1004.c index 29b35aca96c..69a9f0f08c6 100644 --- a/arch/avr32/boards/atstk1000/atstk1004.c +++ b/arch/avr32/boards/atstk1000/atstk1004.c @@ -120,12 +120,12 @@ static void __init atstk1004_setup_extdac(void) void __init setup_board(void) { #ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM - at32_map_usart(0, 1); /* USART 0/B: /dev/ttyS1, IRDA */ + at32_map_usart(0, 1, 0); /* USART 0/B: /dev/ttyS1, IRDA */ #else - at32_map_usart(1, 0); /* USART 1/A: /dev/ttyS0, DB9 */ + at32_map_usart(1, 0, 0); /* USART 1/A: /dev/ttyS0, DB9 */ #endif /* USART 2/unused: expansion connector */ - at32_map_usart(3, 2); /* USART 3/C: /dev/ttyS2, DB9 */ + at32_map_usart(3, 2, 0); /* USART 3/C: /dev/ttyS2, DB9 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c index cf6e4e5624d..46c9b0a224c 100644 --- a/arch/avr32/boards/favr-32/setup.c +++ b/arch/avr32/boards/favr-32/setup.c @@ -250,7 +250,7 @@ static void __init favr32_setup_atmel_pwm_bl(void) void __init setup_board(void) { - at32_map_usart(3, 0); /* USART 3 => /dev/ttyS0 */ + at32_map_usart(3, 0, 0); /* USART 3 => /dev/ttyS0 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/hammerhead/setup.c b/arch/avr32/boards/hammerhead/setup.c index a5c2da25c4f..dd009875a40 100644 --- a/arch/avr32/boards/hammerhead/setup.c +++ b/arch/avr32/boards/hammerhead/setup.c @@ -165,7 +165,7 @@ static void __init set_hw_addr(struct platform_device *pdev) void __init setup_board(void) { - at32_map_usart(1, 0); /* USART 1: /dev/ttyS0, DB9 */ + at32_map_usart(1, 0, 0); /* USART 1: /dev/ttyS0, DB9 */ at32_setup_serial_console(0); } diff --git a/arch/avr32/boards/merisc/setup.c b/arch/avr32/boards/merisc/setup.c index 58acdb4fc9b..20b300cf105 100644 --- a/arch/avr32/boards/merisc/setup.c +++ b/arch/avr32/boards/merisc/setup.c @@ -231,9 +231,9 @@ static void detect_merisc_board_id(void) void __init setup_board(void) { - at32_map_usart(0, 0); - at32_map_usart(1, 1); - at32_map_usart(3, 3); + at32_map_usart(0, 0, 0); + at32_map_usart(1, 1, 0); + at32_map_usart(3, 3, 0); at32_setup_serial_console(1); } @@ -248,7 +248,7 @@ static int __init merisc_init(void) at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL | (1 << 26)); if (merisc_board_id >= 1) - at32_map_usart(2, 2); + at32_map_usart(2, 2, 0); at32_add_device_usart(0); at32_add_device_usart(1); diff --git a/arch/avr32/boards/mimc200/setup.c b/arch/avr32/boards/mimc200/setup.c index 2b58d61f0af..c1b2175b4fe 100644 --- a/arch/avr32/boards/mimc200/setup.c +++ b/arch/avr32/boards/mimc200/setup.c @@ -175,10 +175,10 @@ static void __init set_hw_addr(struct platform_device *pdev) void __init setup_board(void) { - at32_map_usart(0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */ - at32_map_usart(1, 1); /* USART 1: /dev/ttyS1 (RS232) */ - at32_map_usart(2, 2); /* USART 2: /dev/ttyS2 (RS485) */ - at32_map_usart(3, 3); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */ + at32_map_usart(0, 0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */ + at32_map_usart(1, 1, 0); /* USART 1: /dev/ttyS1 (RS232) */ + at32_map_usart(2, 2, 0); /* USART 2: /dev/ttyS2 (RS485) */ + at32_map_usart(3, 3, 0); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */ } static struct i2c_gpio_platform_data i2c_gpio_data = { diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index 62501d64322..7cc65379832 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -966,56 +966,68 @@ static struct resource atmel_usart3_resource[] = { DEFINE_DEV_DATA(atmel_usart, 3); DEV_CLK(usart, atmel_usart3, pba, 6); -static inline void configure_usart0_pins(void) +static inline void configure_usart0_pins(int flags) { u32 pin_mask = (1 << 8) | (1 << 9); /* RXD & TXD */ + if (flags & ATMEL_USART_RTS) pin_mask |= (1 << 6); + if (flags & ATMEL_USART_CTS) pin_mask |= (1 << 7); + if (flags & ATMEL_USART_CLK) pin_mask |= (1 << 10); select_peripheral(PIOA, pin_mask, PERIPH_B, AT32_GPIOF_PULLUP); } -static inline void configure_usart1_pins(void) +static inline void configure_usart1_pins(int flags) { u32 pin_mask = (1 << 17) | (1 << 18); /* RXD & TXD */ + if (flags & ATMEL_USART_RTS) pin_mask |= (1 << 19); + if (flags & ATMEL_USART_CTS) pin_mask |= (1 << 20); + if (flags & ATMEL_USART_CLK) pin_mask |= (1 << 16); select_peripheral(PIOA, pin_mask, PERIPH_A, AT32_GPIOF_PULLUP); } -static inline void configure_usart2_pins(void) +static inline void configure_usart2_pins(int flags) { u32 pin_mask = (1 << 26) | (1 << 27); /* RXD & TXD */ + if (flags & ATMEL_USART_RTS) pin_mask |= (1 << 30); + if (flags & ATMEL_USART_CTS) pin_mask |= (1 << 29); + if (flags & ATMEL_USART_CLK) pin_mask |= (1 << 28); select_peripheral(PIOB, pin_mask, PERIPH_B, AT32_GPIOF_PULLUP); } -static inline void configure_usart3_pins(void) +static inline void configure_usart3_pins(int flags) { u32 pin_mask = (1 << 18) | (1 << 17); /* RXD & TXD */ + if (flags & ATMEL_USART_RTS) pin_mask |= (1 << 16); + if (flags & ATMEL_USART_CTS) pin_mask |= (1 << 15); + if (flags & ATMEL_USART_CLK) pin_mask |= (1 << 19); select_peripheral(PIOB, pin_mask, PERIPH_B, AT32_GPIOF_PULLUP); } static struct platform_device *__initdata at32_usarts[4]; -void __init at32_map_usart(unsigned int hw_id, unsigned int line) +void __init at32_map_usart(unsigned int hw_id, unsigned int line, int flags) { struct platform_device *pdev; switch (hw_id) { case 0: pdev = &atmel_usart0_device; - configure_usart0_pins(); + configure_usart0_pins(flags); break; case 1: pdev = &atmel_usart1_device; - configure_usart1_pins(); + configure_usart1_pins(flags); break; case 2: pdev = &atmel_usart2_device; - configure_usart2_pins(); + configure_usart2_pins(flags); break; case 3: pdev = &atmel_usart3_device; - configure_usart3_pins(); + configure_usart3_pins(flags); break; default: return; diff --git a/arch/avr32/mach-at32ap/include/mach/board.h b/arch/avr32/mach-at32ap/include/mach/board.h index b363b067b0a..0b816428189 100644 --- a/arch/avr32/mach-at32ap/include/mach/board.h +++ b/arch/avr32/mach-at32ap/include/mach/board.h @@ -26,12 +26,17 @@ static inline void __deprecated at32_add_system_devices(void) #define ATMEL_MAX_UART 4 extern struct platform_device *atmel_default_console_device; +/* Flags for selecting USART extra pins */ +#define ATMEL_USART_RTS 0x01 +#define ATMEL_USART_CTS 0x02 +#define ATMEL_USART_CLK 0x03 + struct atmel_uart_data { short use_dma_tx; /* use transmit DMA? */ short use_dma_rx; /* use receive DMA? */ void __iomem *regs; /* virtual base address, if any */ }; -void at32_map_usart(unsigned int hw_id, unsigned int line); +void at32_map_usart(unsigned int hw_id, unsigned int line, int flags); struct platform_device *at32_add_device_usart(unsigned int id); struct eth_platform_data {