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Commit c3e2a79c authored by Haavard Skinnemoen's avatar Haavard Skinnemoen
Browse files

[AVR32] Portmux API update 



Rename portmux_set_func to at32_select_periph, add at32_select_gpio
and add flags parameter to specify the initial state of the pins.

Signed-off-by: default avatarHaavard Skinnemoen <hskinnemoen@atmel.com>
parent 68380b58

arch/avr32/mach-at32ap/at32ap7000.c

+68 −76
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 


#include <asm/io.h>



#include <asm/arch/at32ap7000.h>

#include <asm/arch/board.h>

#include <asm/arch/portmux.h>

#include <asm/arch/sm.h>
@@ -57,6 +58,9 @@ static struct platform_device _name##_id##_device = { \ 
	.num_resources	= ARRAY_SIZE(_name##_id##_resource),	\

}



#define select_peripheral(pin, periph, flags)			\

	at32_select_periph(GPIO_PIN_##pin, GPIO_##periph, flags)



#define DEV_CLK(_name, devname, bus, _index)			\

static struct clk devname##_##_name = {				\

	.name		= #_name,				\
@@ -67,18 +71,6 @@ static struct clk devname##_##_name = { \ 
	.index		= _index,				\

}



enum {

	PIOA,

	PIOB,

	PIOC,

	PIOD,

};



enum {

	FUNC_A,

	FUNC_B,

};



unsigned long at32ap7000_osc_rates[3] = {

	[0] = 32768,

	/* FIXME: these are ATSTK1002-specific */
@@ -569,26 +561,26 @@ DEV_CLK(usart, atmel_usart3, pba, 6); 


static inline void configure_usart0_pins(void)

{

	portmux_set_func(PIOA,  8, FUNC_B);	/* RXD	*/

	portmux_set_func(PIOA,  9, FUNC_B);	/* TXD	*/

	select_peripheral(PA(8),  PERIPH_B, 0);	/* RXD	*/

	select_peripheral(PA(9),  PERIPH_B, 0);	/* TXD	*/

}



static inline void configure_usart1_pins(void)

{

	portmux_set_func(PIOA, 17, FUNC_A);	/* RXD	*/

	portmux_set_func(PIOA, 18, FUNC_A);	/* TXD	*/

	select_peripheral(PA(17), PERIPH_A, 0);	/* RXD	*/

	select_peripheral(PA(18), PERIPH_A, 0);	/* TXD	*/

}



static inline void configure_usart2_pins(void)

{

	portmux_set_func(PIOB, 26, FUNC_B);	/* RXD	*/

	portmux_set_func(PIOB, 27, FUNC_B);	/* TXD	*/

	select_peripheral(PB(26), PERIPH_B, 0);	/* RXD	*/

	select_peripheral(PB(27), PERIPH_B, 0);	/* TXD	*/

}



static inline void configure_usart3_pins(void)

{

	portmux_set_func(PIOB, 18, FUNC_B);	/* RXD	*/

	portmux_set_func(PIOB, 17, FUNC_B);	/* TXD	*/

	select_peripheral(PB(18), PERIPH_B, 0);	/* RXD	*/

	select_peripheral(PB(17), PERIPH_B, 0);	/* TXD	*/

}



static struct platform_device *at32_usarts[4];
@@ -663,27 +655,27 @@ at32_add_device_eth(unsigned int id, struct eth_platform_data *data) 
	case 0:

		pdev = &macb0_device;



		portmux_set_func(PIOC,  3, FUNC_A);	/* TXD0	*/

		portmux_set_func(PIOC,  4, FUNC_A);	/* TXD1	*/

		portmux_set_func(PIOC,  7, FUNC_A);	/* TXEN	*/

		portmux_set_func(PIOC,  8, FUNC_A);	/* TXCK */

		portmux_set_func(PIOC,  9, FUNC_A);	/* RXD0	*/

		portmux_set_func(PIOC, 10, FUNC_A);	/* RXD1	*/

		portmux_set_func(PIOC, 13, FUNC_A);	/* RXER	*/

		portmux_set_func(PIOC, 15, FUNC_A);	/* RXDV	*/

		portmux_set_func(PIOC, 16, FUNC_A);	/* MDC	*/

		portmux_set_func(PIOC, 17, FUNC_A);	/* MDIO	*/

		select_peripheral(PC(3),  PERIPH_A, 0);	/* TXD0	*/

		select_peripheral(PC(4),  PERIPH_A, 0);	/* TXD1	*/

		select_peripheral(PC(7),  PERIPH_A, 0);	/* TXEN	*/

		select_peripheral(PC(8),  PERIPH_A, 0);	/* TXCK */

		select_peripheral(PC(9),  PERIPH_A, 0);	/* RXD0	*/

		select_peripheral(PC(10), PERIPH_A, 0);	/* RXD1	*/

		select_peripheral(PC(13), PERIPH_A, 0);	/* RXER	*/

		select_peripheral(PC(15), PERIPH_A, 0);	/* RXDV	*/

		select_peripheral(PC(16), PERIPH_A, 0);	/* MDC	*/

		select_peripheral(PC(17), PERIPH_A, 0);	/* MDIO	*/



		if (!data->is_rmii) {

			portmux_set_func(PIOC,  0, FUNC_A);	/* COL	*/

			portmux_set_func(PIOC,  1, FUNC_A);	/* CRS	*/

			portmux_set_func(PIOC,  2, FUNC_A);	/* TXER	*/

			portmux_set_func(PIOC,  5, FUNC_A);	/* TXD2	*/

			portmux_set_func(PIOC,  6, FUNC_A);	/* TXD3 */

			portmux_set_func(PIOC, 11, FUNC_A);	/* RXD2	*/

			portmux_set_func(PIOC, 12, FUNC_A);	/* RXD3	*/

			portmux_set_func(PIOC, 14, FUNC_A);	/* RXCK	*/

			portmux_set_func(PIOC, 18, FUNC_A);	/* SPD	*/

			select_peripheral(PC(0),  PERIPH_A, 0);	/* COL	*/

			select_peripheral(PC(1),  PERIPH_A, 0);	/* CRS	*/

			select_peripheral(PC(2),  PERIPH_A, 0);	/* TXER	*/

			select_peripheral(PC(5),  PERIPH_A, 0);	/* TXD2	*/

			select_peripheral(PC(6),  PERIPH_A, 0);	/* TXD3 */

			select_peripheral(PC(11), PERIPH_A, 0);	/* RXD2	*/

			select_peripheral(PC(12), PERIPH_A, 0);	/* RXD3	*/

			select_peripheral(PC(14), PERIPH_A, 0);	/* RXCK	*/

			select_peripheral(PC(18), PERIPH_A, 0);	/* SPD	*/

		}

		break;
@@ -714,12 +706,12 @@ struct platform_device *__init at32_add_device_spi(unsigned int id) 
	switch (id) {

	case 0:

		pdev = &spi0_device;

		portmux_set_func(PIOA,  0, FUNC_A);	/* MISO	 */

		portmux_set_func(PIOA,  1, FUNC_A);	/* MOSI	 */

		portmux_set_func(PIOA,  2, FUNC_A);	/* SCK	 */

		portmux_set_func(PIOA,  3, FUNC_A);	/* NPCS0 */

		portmux_set_func(PIOA,  4, FUNC_A);	/* NPCS1 */

		portmux_set_func(PIOA,  5, FUNC_A);	/* NPCS2 */

		select_peripheral(PA(0),  PERIPH_A, 0);	/* MISO	 */

		select_peripheral(PA(1),  PERIPH_A, 0);	/* MOSI	 */

		select_peripheral(PA(2),  PERIPH_A, 0);	/* SCK	 */

		select_peripheral(PA(3),  PERIPH_A, 0);	/* NPCS0 */

		select_peripheral(PA(4),  PERIPH_A, 0);	/* NPCS1 */

		select_peripheral(PA(5),  PERIPH_A, 0);	/* NPCS2 */

		break;



	default:
@@ -762,37 +754,37 @@ at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data) 
	switch (id) {

	case 0:

		pdev = &lcdc0_device;

		portmux_set_func(PIOC, 19, FUNC_A);	/* CC	  */

		portmux_set_func(PIOC, 20, FUNC_A);	/* HSYNC  */

		portmux_set_func(PIOC, 21, FUNC_A);	/* PCLK	  */

		portmux_set_func(PIOC, 22, FUNC_A);	/* VSYNC  */

		portmux_set_func(PIOC, 23, FUNC_A);	/* DVAL	  */

		portmux_set_func(PIOC, 24, FUNC_A);	/* MODE	  */

		portmux_set_func(PIOC, 25, FUNC_A);	/* PWR	  */

		portmux_set_func(PIOC, 26, FUNC_A);	/* DATA0  */

		portmux_set_func(PIOC, 27, FUNC_A);	/* DATA1  */

		portmux_set_func(PIOC, 28, FUNC_A);	/* DATA2  */

		portmux_set_func(PIOC, 29, FUNC_A);	/* DATA3  */

		portmux_set_func(PIOC, 30, FUNC_A);	/* DATA4  */

		portmux_set_func(PIOC, 31, FUNC_A);	/* DATA5  */

		portmux_set_func(PIOD,  0, FUNC_A);	/* DATA6  */

		portmux_set_func(PIOD,  1, FUNC_A);	/* DATA7  */

		portmux_set_func(PIOD,  2, FUNC_A);	/* DATA8  */

		portmux_set_func(PIOD,  3, FUNC_A);	/* DATA9  */

		portmux_set_func(PIOD,  4, FUNC_A);	/* DATA10 */

		portmux_set_func(PIOD,  5, FUNC_A);	/* DATA11 */

		portmux_set_func(PIOD,  6, FUNC_A);	/* DATA12 */

		portmux_set_func(PIOD,  7, FUNC_A);	/* DATA13 */

		portmux_set_func(PIOD,  8, FUNC_A);	/* DATA14 */

		portmux_set_func(PIOD,  9, FUNC_A);	/* DATA15 */

		portmux_set_func(PIOD, 10, FUNC_A);	/* DATA16 */

		portmux_set_func(PIOD, 11, FUNC_A);	/* DATA17 */

		portmux_set_func(PIOD, 12, FUNC_A);	/* DATA18 */

		portmux_set_func(PIOD, 13, FUNC_A);	/* DATA19 */

		portmux_set_func(PIOD, 14, FUNC_A);	/* DATA20 */

		portmux_set_func(PIOD, 15, FUNC_A);	/* DATA21 */

		portmux_set_func(PIOD, 16, FUNC_A);	/* DATA22 */

		portmux_set_func(PIOD, 17, FUNC_A);	/* DATA23 */

		select_peripheral(PC(19), PERIPH_A, 0);	/* CC	  */

		select_peripheral(PC(20), PERIPH_A, 0);	/* HSYNC  */

		select_peripheral(PC(21), PERIPH_A, 0);	/* PCLK	  */

		select_peripheral(PC(22), PERIPH_A, 0);	/* VSYNC  */

		select_peripheral(PC(23), PERIPH_A, 0);	/* DVAL	  */

		select_peripheral(PC(24), PERIPH_A, 0);	/* MODE	  */

		select_peripheral(PC(25), PERIPH_A, 0);	/* PWR	  */

		select_peripheral(PC(26), PERIPH_A, 0);	/* DATA0  */

		select_peripheral(PC(27), PERIPH_A, 0);	/* DATA1  */

		select_peripheral(PC(28), PERIPH_A, 0);	/* DATA2  */

		select_peripheral(PC(29), PERIPH_A, 0);	/* DATA3  */

		select_peripheral(PC(30), PERIPH_A, 0);	/* DATA4  */

		select_peripheral(PC(31), PERIPH_A, 0);	/* DATA5  */

		select_peripheral(PD(0),  PERIPH_A, 0);	/* DATA6  */

		select_peripheral(PD(1),  PERIPH_A, 0);	/* DATA7  */

		select_peripheral(PD(2),  PERIPH_A, 0);	/* DATA8  */

		select_peripheral(PD(3),  PERIPH_A, 0);	/* DATA9  */

		select_peripheral(PD(4),  PERIPH_A, 0);	/* DATA10 */

		select_peripheral(PD(5),  PERIPH_A, 0);	/* DATA11 */

		select_peripheral(PD(6),  PERIPH_A, 0);	/* DATA12 */

		select_peripheral(PD(7),  PERIPH_A, 0);	/* DATA13 */

		select_peripheral(PD(8),  PERIPH_A, 0);	/* DATA14 */

		select_peripheral(PD(9),  PERIPH_A, 0);	/* DATA15 */

		select_peripheral(PD(10), PERIPH_A, 0);	/* DATA16 */

		select_peripheral(PD(11), PERIPH_A, 0);	/* DATA17 */

		select_peripheral(PD(12), PERIPH_A, 0);	/* DATA18 */

		select_peripheral(PD(13), PERIPH_A, 0);	/* DATA19 */

		select_peripheral(PD(14), PERIPH_A, 0);	/* DATA20 */

		select_peripheral(PD(15), PERIPH_A, 0);	/* DATA21 */

		select_peripheral(PD(16), PERIPH_A, 0);	/* DATA22 */

		select_peripheral(PD(17), PERIPH_A, 0);	/* DATA23 */



		clk_set_parent(&lcdc0_pixclk, &pll0);

		clk_set_rate(&lcdc0_pixclk, clk_get_rate(&pll0));

arch/avr32/mach-at32ap/pio.c

+78 −7
Original line number Diff line number Diff line
@@ -25,27 +25,98 @@ struct pio_device { 
	void __iomem *regs;

	const struct platform_device *pdev;

	struct clk *clk;

	u32 alloc_mask;

	u32 pinmux_mask;

	char name[32];

};



static struct pio_device pio_dev[MAX_NR_PIO_DEVICES];



void portmux_set_func(unsigned int portmux_id, unsigned int pin_id,

		      unsigned int function_id)

static struct pio_device *gpio_to_pio(unsigned int gpio)

{

	struct pio_device *pio;

	u32 mask = 1 << pin_id;

	unsigned int index;



	BUG_ON(portmux_id >= MAX_NR_PIO_DEVICES);

	index = gpio >> 5;

	if (index >= MAX_NR_PIO_DEVICES)

		return NULL;

	pio = &pio_dev[index];

	if (!pio->regs)

		return NULL;



	pio = &pio_dev[portmux_id];

	return pio;

}



/* Pin multiplexing API */



void __init at32_select_periph(unsigned int pin, unsigned int periph,

			       unsigned long flags)

{

	struct pio_device *pio;

	unsigned int pin_index = pin & 0x1f;

	u32 mask = 1 << pin_index;



	pio = gpio_to_pio(pin);

	if (unlikely(!pio)) {

		printk("pio: invalid pin %u\n", pin);

		goto fail;

	}



	if (function_id)

	if (unlikely(test_and_set_bit(pin_index, &pio->pinmux_mask))) {

		printk("%s: pin %u is busy\n", pio->name, pin_index);

		goto fail;

	}



	pio_writel(pio, PUER, mask);

	if (periph)

		pio_writel(pio, BSR, mask);

	else

		pio_writel(pio, ASR, mask);



	pio_writel(pio, PDR, mask);

	if (!(flags & AT32_GPIOF_PULLUP))

		pio_writel(pio, PUDR, mask);



	return;



fail:

	dump_stack();

}



void __init at32_select_gpio(unsigned int pin, unsigned long flags)

{

	struct pio_device *pio;

	unsigned int pin_index = pin & 0x1f;

	u32 mask = 1 << pin_index;



	pio = gpio_to_pio(pin);

	if (unlikely(!pio)) {

		printk("pio: invalid pin %u\n", pin);

		goto fail;

	}



	if (unlikely(test_and_set_bit(pin_index, &pio->pinmux_mask))) {

		printk("%s: pin %u is busy\n", pio->name, pin_index);

		goto fail;

	}



	pio_writel(pio, PUER, mask);

	if (flags & AT32_GPIOF_HIGH)

		pio_writel(pio, SODR, mask);

	else

		pio_writel(pio, CODR, mask);

	if (flags & AT32_GPIOF_OUTPUT)

		pio_writel(pio, OER, mask);

	else

		pio_writel(pio, ODR, mask);



	pio_writel(pio, PER, mask);

	if (!(flags & AT32_GPIOF_PULLUP))

		pio_writel(pio, PUDR, mask);



	return;



fail:

	dump_stack();

}



static int __init pio_probe(struct platform_device *pdev)

include/asm-avr32/arch-at32ap/at32ap7000.h

0 → 100644
+33 −0
Original line number Diff line number Diff line 
/*

 * Pin definitions for AT32AP7000.

 *

 * Copyright (C) 2006 Atmel Corporation

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef __ASM_ARCH_AT32AP7000_H__

#define __ASM_ARCH_AT32AP7000_H__



#define GPIO_PERIPH_A	0

#define GPIO_PERIPH_B	1



#define NR_GPIO_CONTROLLERS	4



/*

 * Pin numbers identifying specific GPIO pins on the chip. They can

 * also be converted to IRQ numbers by passing them through

 * gpio_to_irq().

 */

#define GPIO_PIOA_BASE	(0)

#define GPIO_PIOB_BASE	(GPIO_PIOA_BASE + 32)

#define GPIO_PIOC_BASE	(GPIO_PIOB_BASE + 32)

#define GPIO_PIOD_BASE	(GPIO_PIOC_BASE + 32)



#define GPIO_PIN_PA(N)	(GPIO_PIOA_BASE + (N))

#define GPIO_PIN_PB(N)	(GPIO_PIOB_BASE + (N))

#define GPIO_PIN_PC(N)	(GPIO_PIOC_BASE + (N))

#define GPIO_PIN_PD(N)	(GPIO_PIOD_BASE + (N))



#endif /* __ASM_ARCH_AT32AP7000_H__ */

include/asm-avr32/arch-at32ap/portmux.h

+15 −5
Original line number Diff line number Diff line
@@ -7,10 +7,20 @@ 
 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef __ASM_AVR32_AT32_PORTMUX_H__

#define __ASM_AVR32_AT32_PORTMUX_H__

#ifndef __ASM_ARCH_PORTMUX_H__

#define __ASM_ARCH_PORTMUX_H__



void portmux_set_func(unsigned int portmux_id, unsigned int pin_id,

		      unsigned int function_id);

/*

 * Set up pin multiplexing, called from board init only.

 *

 * The following flags determine the initial state of the pin.

 */

#define AT32_GPIOF_PULLUP	0x00000001	/* Enable pull-up */

#define AT32_GPIOF_OUTPUT	0x00000002	/* Enable output driver */

#define AT32_GPIOF_HIGH		0x00000004	/* Set output high */



void at32_select_periph(unsigned int pin, unsigned int periph,

			unsigned long flags);

void at32_select_gpio(unsigned int pin, unsigned long flags);



#endif /* __ASM_AVR32_AT32_PORTMUX_H__ */
 
#endif /* __ASM_ARCH_PORTMUX_H__ */