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Commit 4a5920e8 authored by Maxime Ripard's avatar Maxime Ripard Committed by Greg Kroah-Hartman
Browse files

ARM: AT91: ADC: Add support for the AT91SAM9M10G45-EK board 



This patch adds platform data for the AT91 ADC driver support for
the AT91SAM9M10G45-EK board.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 67b5d7b3

arch/arm/mach-at91/at91sam9g45.c

+9 −0
Original line number Diff line number Diff line
@@ -176,6 +176,12 @@ static struct clk vdec_clk = { 
	.type		= CLK_TYPE_PERIPHERAL,

};



static struct clk adc_op_clk = {

	.name		= "adc_op_clk",

	.type		= CLK_TYPE_PERIPHERAL,

	.rate_hz	= 13200000,

};



static struct clk *periph_clocks[] __initdata = {

	&pioA_clk,

	&pioB_clk,
@@ -204,6 +210,7 @@ static struct clk *periph_clocks[] __initdata = { 
	&isi_clk,

	&udphs_clk,

	&mmc1_clk,

	&adc_op_clk,

	// irq0

};
@@ -242,6 +249,8 @@ static struct clk_lookup periph_clocks_lookups[] = { 
	CLKDEV_CON_ID("pioC", &pioC_clk),

	CLKDEV_CON_ID("pioD", &pioDE_clk),

	CLKDEV_CON_ID("pioE", &pioDE_clk),

	/* Fake adc clock */

	CLKDEV_CON_ID("adc_clk", &tsc_clk),

};



static struct clk_lookup usart_clocks_lookups[] = {

arch/arm/mach-at91/at91sam9g45_devices.c

+101 −0
Original line number Diff line number Diff line
@@ -19,9 +19,12 @@ 
#include <linux/i2c-gpio.h>

#include <linux/atmel-mci.h>



#include <linux/platform_data/at91_adc.h>



#include <linux/fb.h>

#include <video/atmel_lcdc.h>



#include <mach/at91_adc.h>

#include <mach/board.h>

#include <mach/at91sam9g45.h>

#include <mach/at91sam9g45_matrix.h>
@@ -1206,6 +1209,104 @@ void __init at91_add_device_tsadcc(struct at91_tsadcc_data *data) {} 
#endif





/* --------------------------------------------------------------------

 *  ADC

 * -------------------------------------------------------------------- */



#if IS_ENABLED(CONFIG_AT91_ADC)

static struct at91_adc_data adc_data;



static struct resource adc_resources[] = {

	[0] = {

		.start	= AT91SAM9G45_BASE_TSC,

		.end	= AT91SAM9G45_BASE_TSC + SZ_16K - 1,

		.flags	= IORESOURCE_MEM,

	},

	[1] = {

		.start	= AT91SAM9G45_ID_TSC,

		.end	= AT91SAM9G45_ID_TSC,

		.flags	= IORESOURCE_IRQ,

	}

};



static struct platform_device at91_adc_device = {

	.name		= "at91_adc",

	.id		= -1,

	.dev		= {

				.platform_data	= &adc_data,

	},

	.resource	= adc_resources,

	.num_resources	= ARRAY_SIZE(adc_resources),

};



static struct at91_adc_trigger at91_adc_triggers[] = {

	[0] = {

		.name = "external-rising",

		.value = 1,

		.is_external = true,

	},

	[1] = {

		.name = "external-falling",

		.value = 2,

		.is_external = true,

	},

	[2] = {

		.name = "external-any",

		.value = 3,

		.is_external = true,

	},

	[3] = {

		.name = "continuous",

		.value = 6,

		.is_external = false,

	},

};



static struct at91_adc_reg_desc at91_adc_register_g45 = {

	.channel_base = AT91_ADC_CHR(0),

	.drdy_mask = AT91_ADC_DRDY,

	.status_register = AT91_ADC_SR,

	.trigger_register = 0x08,

};



void __init at91_add_device_adc(struct at91_adc_data *data)

{

	if (!data)

		return;



	if (test_bit(0, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD20, 0);

	if (test_bit(1, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD21, 0);

	if (test_bit(2, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD22, 0);

	if (test_bit(3, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD23, 0);

	if (test_bit(4, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD24, 0);

	if (test_bit(5, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD25, 0);

	if (test_bit(6, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD26, 0);

	if (test_bit(7, &data->channels_used))

		at91_set_gpio_input(AT91_PIN_PD27, 0);



	if (data->use_external_triggers)

		at91_set_A_periph(AT91_PIN_PD28, 0);



	data->num_channels = 8;

	data->startup_time = 40;

	data->registers = &at91_adc_register_g45;

	data->trigger_number = 4;

	data->trigger_list = at91_adc_triggers;



	adc_data = *data;

	platform_device_register(&at91_adc_device);

}

#else

void __init at91_add_device_adc(struct at91_adc_data *data) {}

#endif



/* --------------------------------------------------------------------

 *  RTT

 * -------------------------------------------------------------------- */

arch/arm/mach-at91/board-sam9m10g45ek.c

+12 −0
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ 
#include <linux/atmel-mci.h>

#include <linux/delay.h>



#include <linux/platform_data/at91_adc.h>



#include <mach/hardware.h>

#include <video/atmel_lcdc.h>

#include <media/soc_camera.h>
@@ -315,6 +317,14 @@ static struct at91_tsadcc_data ek_tsadcc_data = { 
	.ts_sample_hold_time	= 0x0a,

};



/*

 * ADCs

 */

static struct at91_adc_data ek_adc_data = {

	.channels_used = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7),

	.use_external_triggers = true,

	.vref = 3300,

};



/*

 * GPIO Buttons
@@ -480,6 +490,8 @@ static void __init ek_board_init(void) 
	at91_add_device_lcdc(&ek_lcdc_data);

	/* Touch Screen */

	at91_add_device_tsadcc(&ek_tsadcc_data);

	/* ADC */

	at91_add_device_adc(&ek_adc_data);

	/* Push Buttons */

	ek_add_device_buttons();

	/* AC97 */