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authorHans-Christian Egtvedt <hcegtvedt@atmel.com>2008-07-01 14:26:45 +0200
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-07-24 13:51:46 +0200
commit218df4a25a9b828df4bb44c86e35febe40c82e62 (patch)
treebcb16ce1f1231def1adcf5f5ed7915fa3a1f40fd /arch/avr32
parentfbfca4b8781757c1950b2225ba67d83072e0bc07 (diff)
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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>
Diffstat (limited to 'arch/avr32')
-rw-r--r--arch/avr32/mach-at32ap/at32ap700x.c34
1 files changed, 27 insertions, 7 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 4ac38d28891..30c7cdab28d 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -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;
+
+ 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;
- 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 (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;
}