From 218df4a25a9b828df4bb44c86e35febe40c82e62 Mon Sep 17 00:00:00 2001 From: Hans-Christian Egtvedt Date: Tue, 1 Jul 2008 14:26:45 +0200 Subject: [PATCH] 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 Signed-off-by: Haavard Skinnemoen --- arch/avr32/mach-at32ap/at32ap700x.c | 34 +++++++++++++++++++++------ include/asm-avr32/arch-at32ap/board.h | 10 +++++++- 2 files changed, 36 insertions(+), 8 deletions(-) diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index 4ac38d28891d..30c7cdab28d0 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; } diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h index a3783861cdd2..203cb4ead2c8 100644 --- a/include/asm-avr32/arch-at32ap/board.h +++ b/include/asm-avr32/arch-at32ap/board.h @@ -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); -- 2.39.5