From 74843787158e9dff249f0528e7d4806102cc2c26 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Sat, 9 Jan 2016 12:45:10 +0000 Subject: mmc: atmel-mci: restore dma on AVR32 Commit ecb89f2f5f3e7 ("mmc: atmel-mci: remove compat for non DT board when requesting dma chan") broke dma on AVR32 and any other boards not using DT. This restores a fallback mechanism for such cases. Signed-off-by: Mans Rullgard Acked-by: Hans-Christian Noren Egtvedt Acked-by: Ludovic Desroches Acked-by: Ulf Hansson --- arch/avr32/mach-at32ap/at32ap700x.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'arch/avr32/mach-at32ap') diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c index b4cb3bd89d8a..6e906172dc33 100644 --- a/arch/avr32/mach-at32ap/at32ap700x.c +++ b/arch/avr32/mach-at32ap/at32ap700x.c @@ -1321,6 +1321,21 @@ static struct clk atmel_mci0_pclk = { .index = 9, }; +static bool at32_mci_dma_filter(struct dma_chan *chan, void *pdata) +{ + struct mci_dma_data *sl = pdata; + + if (!sl) + return false; + + if (find_slave_dev(sl) == chan->device->dev) { + chan->private = slave_data_ptr(sl); + return true; + } + + return false; +} + struct platform_device *__init at32_add_device_mci(unsigned int id, struct mci_platform_data *data) { @@ -1355,6 +1370,7 @@ at32_add_device_mci(unsigned int id, struct mci_platform_data *data) slave->sdata.dst_master = 0; data->dma_slave = slave; + data->dma_filter = at32_mci_dma_filter; if (platform_device_add_data(pdev, data, sizeof(struct mci_platform_data))) -- cgit v1.2.3