On Wed, 2015-08-12 at 17:49 +0200, Ludovic Desroches wrote:
> Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx>
> ---
>
> Hi,
>
> Here is a rough draft to fix the regression. I have only compiled it.
> I will
> update all the boards later.
>
> I have removed the mci_dma_data since it is no more used for ARM
> platforms.
I will test it later, though few comments below.
>
> arch/avr32/boards/atngw100/setup.c | 1 +
> arch/avr32/mach-at32ap/at32ap700x.c | 31
> +++++++++++++++++++++--------
> arch/avr32/mach-at32ap/include/mach/board.h | 2 ++
> drivers/mmc/host/atmel-mci.c | 16 +++++++++++++--
> include/linux/atmel-mci.h | 2 ++
> include/linux/platform_data/mmc-atmel-mci.h | 22 -------------------
> -
> 6 files changed, 42 insertions(+), 32 deletions(-)
> delete mode 100644 include/linux/platform_data/mmc-atmel-mci.h
>
> diff --git a/arch/avr32/boards/atngw100/setup.c
> b/arch/avr32/boards/atngw100/setup.c
> index afeae89..8b4f3d1 100644
> --- a/arch/avr32/boards/atngw100/setup.c
> +++ b/arch/avr32/boards/atngw100/setup.c
> @@ -131,6 +131,7 @@ static struct mci_platform_data __initdata
> mci0_data = {
> .wp_pin = GPIO_PIN_PE(0),
> #endif
> },
> + .dma_filter = &atmci_filter,
> };
>
> static struct usba_platform_data atngw100_usba_data __initdata = {
> diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach
> -at32ap/at32ap700x.c
> index 1d8b147..8c6f77e 100644
> --- a/arch/avr32/mach-at32ap/at32ap700x.c
> +++ b/arch/avr32/mach-at32ap/at32ap700x.c
> @@ -7,6 +7,7 @@
> */
> #include <linux/clk.h>
> #include <linux/delay.h>
> +#include <linux/dmaengine.h>
> #include <linux/platform_data/dma-dw.h>
> #include <linux/fb.h>
> #include <linux/init.h>
> @@ -17,7 +18,6 @@
> #include <linux/spi/spi.h>
> #include <linux/usb/atmel_usba_udc.h>
>
> -#include <linux/platform_data/mmc-atmel-mci.h>
> #include <linux/atmel-mci.h>
>
> #include <asm/io.h>
> @@ -1332,7 +1332,7 @@ struct platform_device *__init
> at32_add_device_mci(unsigned int id, struct mci_platform_data *data)
> {
> struct platform_device *pdev;
> - struct mci_dma_data *slave;
> + struct dw_dma_slave *slave;
> u32 pioa_mask;
> u32 piob_mask;
>
> @@ -1351,15 +1351,15 @@ at32_add_device_mci(unsigned int id, struct
> mci_platform_data *data)
> ARRAY_SIZE(atmel_mci0_resource)))
> goto fail;
>
> - slave = kzalloc(sizeof(struct mci_dma_data), GFP_KERNEL);
> + slave = kzalloc(sizeof(*slave), GFP_KERNEL);
> if (!slave)
> goto fail;
>
> - slave->sdata.dma_dev = &dw_dmac0_device.dev;
> - slave->sdata.src_id = 0;
> - slave->sdata.dst_id = 1;
> - slave->sdata.src_master = 1;
> - slave->sdata.dst_master = 0;
> + slave->dma_dev = &dw_dmac0_device.dev;
> + slave->src_id = 0;
> + slave->dst_id = 1;
> + slave->src_master = 1;
> + slave->dst_master = 0;
>
> data->dma_slave = slave;
>
> @@ -1435,6 +1435,21 @@ fail:
> return NULL;
> }
>
> +bool atmci_filter(struct dma_chan *chan, void *pdata)
> +{
> + struct dw_dma_slave *sl_pdata = pdata;
I would prefer dws name for struct dw_dma_slave here.
> + if (!sl_pdata)
> + return false;
> +
> + if (sl_pdata->dma_dev == chan->device->dev) {
> + chan->private = sl_pdata;
> + return true;
> + } else {
> + return false;
> + }
> +}
> +
> /* -----------------------------------------------------------------
> ---
> * LCDC
> * -----------------------------------------------------------------
> --- */
> diff --git a/arch/avr32/mach-at32ap/include/mach/board.h
> b/arch/avr32/mach-at32ap/include/mach/board.h
> index f1a316d..e6f9e56 100644
> --- a/arch/avr32/mach-at32ap/include/mach/board.h
> +++ b/arch/avr32/mach-at32ap/include/mach/board.h
> @@ -4,6 +4,7 @@
> #ifndef __ASM_ARCH_BOARD_H
> #define __ASM_ARCH_BOARD_H
>
> +#include <linux/dmaengine.h>
> #include <linux/types.h>
> #include <linux/serial.h>
> #include <linux/platform_data/macb.h>
> @@ -86,6 +87,7 @@ struct platform_device
> *at32_add_device_twi(unsigned int id,
> struct mci_platform_data;
> struct platform_device *
> at32_add_device_mci(unsigned int id, struct mci_platform_data
> *data);
> +bool atmci_filter(struct dma_chan *chan, void *pdata);
Maybe at32_mci_filter() ?
>
> struct ac97c_platform_data;
> struct platform_device *
> diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel
> -mci.c
> index 9a39e0b..1d80135 100644
> --- a/drivers/mmc/host/atmel-mci.c
> +++ b/drivers/mmc/host/atmel-mci.c
> @@ -30,7 +30,6 @@
> #include <linux/stat.h>
> #include <linux/types.h>
> #include <linux/platform_data/atmel.h>
> -#include <linux/platform_data/mmc-atmel-mci.h>
>
> #include <linux/mmc/host.h>
> #include <linux/mmc/sdio.h>
> @@ -2281,8 +2280,21 @@ static int atmci_configure_dma(struct
> atmel_mci *host)
> {
> host->dma.chan = dma_request_slave_channel_reason(&host
> ->pdev->dev,
> "rxtx");
> - if (IS_ERR(host->dma.chan))
> + if (IS_ERR(host->dma.chan) == -ENODEV) {
IS_ERR() returns boolean. It wouldn't be comparable with -Exxx.
> + dma_cap_mask_t mask;
> + struct mci_platform_data *pdata = host->pdev
> ->dev.platform_data;
> + /* */
> + dma_cap_zero(mask);
> + dma_cap_set(DMA_SLAVE, mask);
> +
> + host->dma.chan = dma_request_channel(mask,
> + pdata
> ->dma_filter,
> + pdata
> ->dma_slave);
> + if (!host->dma.chan)
> + return -ENODEV;
> + } else {
> return PTR_ERR(host->dma.chan);
> + }
>
> dev_info(&host->pdev->dev, "using %s for DMA transfers\n",
> dma_chan_name(host->dma.chan));
> diff --git a/include/linux/atmel-mci.h b/include/linux/atmel-mci.h
> index 9177947..fe5d72f 100644
> --- a/include/linux/atmel-mci.h
> +++ b/include/linux/atmel-mci.h
> @@ -1,6 +1,7 @@
> #ifndef __LINUX_ATMEL_MCI_H
> #define __LINUX_ATMEL_MCI_H
>
> +#include <linux/dmaengine.h>
You need only struct dma_chan. Why not
struct dma_chan;
?
> #include <linux/types.h>
>
> #define ATMCI_MAX_NR_SLOTS 2
> @@ -38,6 +39,7 @@ struct mci_slot_pdata {
> struct mci_platform_data {
> struct mci_dma_data *dma_slave;
Should be above line left?
> struct mci_slot_pdata slot[ATMCI_MAX_NR_SLOTS];
> + bool (*dma_filter) (struct dma_chan *chan, void
> *pdata);
> };
>
> #endif /* __LINUX_ATMEL_MCI_H */
> diff --git a/include/linux/platform_data/mmc-atmel-mci.h
> b/include/linux/platform_data/mmc-atmel-mci.h
> deleted file mode 100644
> index 399a2d5..0000000
> --- a/include/linux/platform_data/mmc-atmel-mci.h
> +++ /dev/null
> @@ -1,22 +0,0 @@
> -#ifndef __MMC_ATMEL_MCI_H
> -#define __MMC_ATMEL_MCI_H
> -
> -#include <linux/platform_data/dma-atmel.h>
> -#include <linux/platform_data/dma-dw.h>
> -
> -/**
> - * struct mci_dma_data - DMA data for MCI interface
> - */
> -struct mci_dma_data {
> -#ifdef CONFIG_ARM
> - struct at_dma_slave sdata;
> -#else
> - struct dw_dma_slave sdata;
> -#endif
> -};
> -
> -/* accessor macros */
> -#define slave_data_ptr(s) (&(s)->sdata)
> -#define find_slave_dev(s) ((s)->sdata.dma_dev)
> -
> -#endif /* __MMC_ATMEL_MCI_H */
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy
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