> -----Original Message-----
> From: Linuxppc-dev [mailto:linuxppc-dev-
> [email protected]] On Behalf Of Nicolin
> Chen
> Sent: Friday, November 08, 2013 4:20 PM
> To: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected]
> Cc: [email protected]; [email protected]; alsa-devel@alsa-
> project.org; [email protected]; [email protected];
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; linuxppc-
> [email protected]; [email protected]
> Subject: [PATCH v4 1/4] dma: imx-sdma: Add sdma firmware version 2 support
>
> On i.MX5/6 series, SDMA is using new version firmware to support SSI dual FIFO
> feature and HDMI Audio (i.MX6Q/DL only). Thus add it.
>
> Signed-off-by: Nicolin Chen <[email protected]>
> ---
> drivers/dma/imx-sdma.c | 15 ++++++++++++++-
> include/linux/platform_data/dma-imx-sdma.h | 5 +++++
> 2 files changed, 19 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index
> fc43603..c7ece8d 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -323,6 +323,7 @@ struct sdma_engine {
> struct clk *clk_ipg;
> struct clk *clk_ahb;
> spinlock_t channel_0_lock;
> + u32 script_number;
> struct sdma_script_start_addrs *script_addrs;
> const struct sdma_driver_data *drvdata;
> };
> @@ -1238,6 +1239,7 @@ static void sdma_issue_pending(struct dma_chan *chan) }
>
> #define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1 34
> +#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2 38
>
> static void sdma_add_scripts(struct sdma_engine *sdma,
> const struct sdma_script_start_addrs *addr) @@ -1246,7 +1248,7
> @@
> static void sdma_add_scripts(struct sdma_engine *sdma,
> s32 *saddr_arr = (u32 *)sdma->script_addrs;
> int i;
>
> - for (i = 0; i < SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1; i++)
> + for (i = 0; i < sdma->script_number; i++)
> if (addr_arr[i] > 0)
> saddr_arr[i] = addr_arr[i];
> }
> @@ -1272,6 +1274,17 @@ static void sdma_load_firmware(const struct firmware
> *fw,
> void *context)
> goto err_firmware;
> if (header->ram_code_start + header->ram_code_size > fw->size)
> goto err_firmware;
> + switch (header->version_major) {
> + case 1:
> + sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V1;
> + break;
> + case 2:
> + sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V2;
> + break;
> + default:
> + dev_err(sdma->dev, "unknown firmware version\n");
> + return;
Why return and not "goto err_firmware" ?
-Bharat
> + }
>
> addr = (void *)header + header->script_addrs_start;
> ram_code = (void *)header + header->ram_code_start; diff --git
> a/include/linux/platform_data/dma-imx-sdma.h
> b/include/linux/platform_data/dma-
> imx-sdma.h
> index 3a39428..eabac4e 100644
> --- a/include/linux/platform_data/dma-imx-sdma.h
> +++ b/include/linux/platform_data/dma-imx-sdma.h
> @@ -43,6 +43,11 @@ struct sdma_script_start_addrs {
> s32 dptc_dvfs_addr;
> s32 utra_addr;
> s32 ram_code_start_addr;
> + /* End of v1 array */
> + s32 mcu_2_ssish_addr;
> + s32 ssish_2_mcu_addr;
> + s32 hdmi_dma_addr;
> + /* End of v2 array */
> };
>
> /**
> --
> 1.8.4
>
>
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