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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 <pma@mediamatech.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This commit is contained in:
Peter Ma 2009-03-31 10:31:02 -07:00 committed by Haavard Skinnemoen
parent a6b6b5ff8f
commit bf4861cf3e
10 changed files with 47 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/avr32/boards/atngw100/setup.c
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@ -118,7 +118,7 @@ static void __init set_hw_addr(struct platform_device *pdev)
void __init setup_board(void) 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); at32_setup_serial_console(0);
} }

6
arch/avr32/boards/atstk1000/atstk1002.c
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@ -252,12 +252,12 @@ static void __init atstk1002_setup_extdac(void)
void __init setup_board(void) void __init setup_board(void)
{ {
#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM #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 #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 #endif
/* USART 2/unused: expansion connector */ /* 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); at32_setup_serial_console(0);
} }

6
arch/avr32/boards/atstk1000/atstk1003.c
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@ -115,12 +115,12 @@ static void __init atstk1003_setup_extdac(void)
void __init setup_board(void) void __init setup_board(void)
{ {
#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM #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 #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 #endif
/* USART 2/unused: expansion connector */ /* 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); at32_setup_serial_console(0);
} }

6
arch/avr32/boards/atstk1000/atstk1004.c
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@ -120,12 +120,12 @@ static void __init atstk1004_setup_extdac(void)
void __init setup_board(void) void __init setup_board(void)
{ {
#ifdef CONFIG_BOARD_ATSTK100X_SW2_CUSTOM #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 #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 #endif
/* USART 2/unused: expansion connector */ /* 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); at32_setup_serial_console(0);
} }

2
arch/avr32/boards/favr-32/setup.c
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@ -250,7 +250,7 @@ static void __init favr32_setup_atmel_pwm_bl(void)
void __init setup_board(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); at32_setup_serial_console(0);
} }

2
arch/avr32/boards/hammerhead/setup.c
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@ -165,7 +165,7 @@ static void __init set_hw_addr(struct platform_device *pdev)
void __init setup_board(void) 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); at32_setup_serial_console(0);
} }

8
arch/avr32/boards/merisc/setup.c
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@ -231,9 +231,9 @@ static void detect_merisc_board_id(void)
void __init setup_board(void) void __init setup_board(void)
{ {
at32_map_usart(0, 0); at32_map_usart(0, 0, 0);
at32_map_usart(1, 1); at32_map_usart(1, 1, 0);
at32_map_usart(3, 3); at32_map_usart(3, 3, 0);
at32_setup_serial_console(1); 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)); at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL | (1 << 26));
if (merisc_board_id >= 1) 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(0);
at32_add_device_usart(1); at32_add_device_usart(1);

8
arch/avr32/boards/mimc200/setup.c
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@ -175,10 +175,10 @@ static void __init set_hw_addr(struct platform_device *pdev)
void __init setup_board(void) void __init setup_board(void)
{ {
at32_map_usart(0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */ at32_map_usart(0, 0, 0); /* USART 0: /dev/ttyS0 (TTL --> Altera) */
at32_map_usart(1, 1); /* USART 1: /dev/ttyS1 (RS232) */ at32_map_usart(1, 1, 0); /* USART 1: /dev/ttyS1 (RS232) */
at32_map_usart(2, 2); /* USART 2: /dev/ttyS2 (RS485) */ at32_map_usart(2, 2, 0); /* USART 2: /dev/ttyS2 (RS485) */
at32_map_usart(3, 3); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */ at32_map_usart(3, 3, 0); /* USART 3: /dev/ttyS3 (RS422 Multidrop) */
} }
static struct i2c_gpio_platform_data i2c_gpio_data = { static struct i2c_gpio_platform_data i2c_gpio_data = {

30
arch/avr32/mach-at32ap/at32ap700x.c
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@ -966,56 +966,68 @@ static struct resource atmel_usart3_resource[] = {
DEFINE_DEV_DATA(atmel_usart, 3); DEFINE_DEV_DATA(atmel_usart, 3);
DEV_CLK(usart, atmel_usart3, pba, 6); 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 */ 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); 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 */ 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); 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 */ 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); 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 */ 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); select_peripheral(PIOB, pin_mask, PERIPH_B, AT32_GPIOF_PULLUP);
} }
static struct platform_device *__initdata at32_usarts[4]; 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; struct platform_device *pdev;
switch (hw_id) { switch (hw_id) {
case 0: case 0:
pdev = &atmel_usart0_device; pdev = &atmel_usart0_device;
configure_usart0_pins(); configure_usart0_pins(flags);
break; break;
case 1: case 1:
pdev = &atmel_usart1_device; pdev = &atmel_usart1_device;
configure_usart1_pins(); configure_usart1_pins(flags);
break; break;
case 2: case 2:
pdev = &atmel_usart2_device; pdev = &atmel_usart2_device;
configure_usart2_pins(); configure_usart2_pins(flags);
break; break;
case 3: case 3:
pdev = &atmel_usart3_device; pdev = &atmel_usart3_device;
configure_usart3_pins(); configure_usart3_pins(flags);
break; break;
default: default:
return; return;

7
arch/avr32/mach-at32ap/include/mach/board.h
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@ -26,12 +26,17 @@ static inline void __deprecated at32_add_system_devices(void)
#define ATMEL_MAX_UART 4 #define ATMEL_MAX_UART 4
extern struct platform_device *atmel_default_console_device; 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 { struct atmel_uart_data {
short use_dma_tx; /* use transmit DMA? */ short use_dma_tx; /* use transmit DMA? */
short use_dma_rx; /* use receive DMA? */ short use_dma_rx; /* use receive DMA? */
void __iomem *regs; /* virtual base address, if any */ 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 platform_device *at32_add_device_usart(unsigned int id);
struct eth_platform_data { struct eth_platform_data {