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avr32: Add platform data for AC97C platform device 

This patch adds platform data to the AC97C platform device. This will
let the board add a GPIO line which is connected to the external codecs
reset line.

The platform data, ac97c_platform_data, must also contain the DMA
controller ID, RX channel ID and TX channel ID.

Tested with Wolfson WM9712 and AP7000.

Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This commit is contained in:
Hans-Christian Egtvedt 2008-07-01 14:26:45 +02:00 committed by Haavard Skinnemoen
parent fbfca4b878
commit 218df4a25a
2 changed files with 36 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
arch/avr32/mach-at32ap/at32ap700x.c
View File

@ -1883,9 +1883,11 @@ static struct clk atmel_ac97c0_pclk = {
.index = 10,
};
struct platform_device *__init at32_add_device_ac97c(unsigned int id)
struct platform_device *__init
at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data)
{
struct platform_device *pdev;
struct ac97c_platform_data _data;
if (id != 0)
return NULL;
@ -1896,19 +1898,37 @@ struct platform_device *__init at32_add_device_ac97c(unsigned int id)
if (platform_device_add_resources(pdev, atmel_ac97c0_resource,
ARRAY_SIZE(atmel_ac97c0_resource)))
goto err_add_resources;
goto fail;
select_peripheral(PB(20), PERIPH_B, 0); /* SYNC */
select_peripheral(PB(21), PERIPH_B, 0); /* SDO */
select_peripheral(PB(22), PERIPH_B, 0); /* SDI */
select_peripheral(PB(23), PERIPH_B, 0); /* SCLK */
if (!data) {
data = &_data;
memset(data, 0, sizeof(struct ac97c_platform_data));
data->reset_pin = GPIO_PIN_NONE;
}
data->dma_rx_periph_id = 3;
data->dma_tx_periph_id = 4;
data->dma_controller_id = 0;
if (platform_device_add_data(pdev, data,
sizeof(struct ac97c_platform_data)))
goto fail;
select_peripheral(PB(20), PERIPH_B, 0); /* SDO */
select_peripheral(PB(21), PERIPH_B, 0); /* SYNC */
select_peripheral(PB(22), PERIPH_B, 0); /* SCLK */
select_peripheral(PB(23), PERIPH_B, 0); /* SDI */
/* TODO: gpio_is_valid(data->reset_pin) with kernel 2.6.26. */
if (data->reset_pin != GPIO_PIN_NONE)
at32_select_gpio(data->reset_pin, 0);
atmel_ac97c0_pclk.dev = &pdev->dev;
platform_device_add(pdev);
return pdev;
err_add_resources:
fail:
platform_device_put(pdev);
return NULL;
}

10
include/asm-avr32/arch-at32ap/board.h
View File

@ -82,7 +82,15 @@ struct mci_platform_data;
struct platform_device *
at32_add_device_mci(unsigned int id, struct mci_platform_data *data);
struct platform_device *at32_add_device_ac97c(unsigned int id);
struct ac97c_platform_data {
unsigned short dma_rx_periph_id;
unsigned short dma_tx_periph_id;
unsigned short dma_controller_id;
int reset_pin;
};
struct platform_device *
at32_add_device_ac97c(unsigned int id, struct ac97c_platform_data *data);
struct platform_device *at32_add_device_abdac(unsigned int id);
struct platform_device *at32_add_device_psif(unsigned int id);