linux-kernel - RE: [PATCH 4/4] dmaengine: imx-sdma: Add i2c dma support

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Date: Thu, 7 Mar 2024 08:34:53 +0000
From: Joy Zou <joy.zou@....com>
To: Frank Li <frank.li@....com>, Vinod Koul <vkoul@...nel.org>, Shawn Guo
	<shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix
 Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>,
	dl-linux-imx <linux-imx@....com>
CC: "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	Robin Gong <yibin.gong@....com>, Clark Wang <xiaoning.wang@....com>
Subject: RE: [PATCH 4/4] dmaengine: imx-sdma: Add i2c dma support



> -----Original Message-----
> From: Frank Li <frank.li@....com>
> Sent: 2024年3月4日 12:33
> To: Vinod Koul <vkoul@...nel.org>; Shawn Guo <shawnguo@...nel.org>;
> Sascha Hauer <s.hauer@...gutronix.de>; Pengutronix Kernel Team
> <kernel@...gutronix.de>; Fabio Estevam <festevam@...il.com>;
> dl-linux-imx <linux-imx@....com>
> Cc: dmaengine@...r.kernel.org; linux-arm-kernel@...ts.infradead.org;
> linux-kernel@...r.kernel.org; imx@...ts.linux.dev; Frank Li
> <frank.li@....com>; Robin Gong <yibin.gong@....com>; Clark Wang
> <xiaoning.wang@....com>
> Subject: [PATCH 4/4] dmaengine: imx-sdma: Add i2c dma support
> 
> From: Robin Gong <yibin.gong@....com>
> 
> New sdma script support i2c. So add I2C dma support.
> 
> Signed-off-by: Robin Gong <yibin.gong@....com>
> Acked-by: Clark Wang <xiaoning.wang@....com>
> Signed-off-by: Frank Li <Frank.Li@....com>

Reviewed-by: Joy Zou <joy.zou@....com>
BR
Joy Zou
> ---
>  drivers/dma/imx-sdma.c      | 7 +++++++
>  include/linux/dma/imx-dma.h | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index
> 9b133990afa39..832be7eccb335 100644
> --- a/drivers/dma/imx-sdma.c
> +++ b/drivers/dma/imx-sdma.c
> @@ -247,6 +247,8 @@ struct sdma_script_start_addrs {
>  	s32 sai_2_mcu_addr;
>  	s32 uart_2_mcu_rom_addr;
>  	s32 uartsh_2_mcu_rom_addr;
> +	s32 i2c_2_mcu_addr;
> +	s32 mcu_2_i2c_addr;
>  	/* End of v3 array */
>  	s32 mcu_2_zqspi_addr;
>  	/* End of v4 array */
> @@ -1078,6 +1080,11 @@ static int sdma_get_pc(struct sdma_channel
> *sdmac,
>  		per_2_emi = sdma->script_addrs->sai_2_mcu_addr;
>  		emi_2_per = sdma->script_addrs->mcu_2_sai_addr;
>  		break;
> +	case IMX_DMATYPE_I2C:
> +		per_2_emi = sdma->script_addrs->i2c_2_mcu_addr;
> +		emi_2_per = sdma->script_addrs->mcu_2_i2c_addr;
> +		sdmac->is_ram_script = true;
> +		break;
>  	case IMX_DMATYPE_HDMI:
>  		emi_2_per = sdma->script_addrs->hdmi_dma_addr;
>  		sdmac->is_ram_script = true;
> diff --git a/include/linux/dma/imx-dma.h b/include/linux/dma/imx-dma.h
> index cfec5f946e237..76a8de9ae1517 100644
> --- a/include/linux/dma/imx-dma.h
> +++ b/include/linux/dma/imx-dma.h
> @@ -41,6 +41,7 @@ enum sdma_peripheral_type {
>  	IMX_DMATYPE_SAI,	/* SAI */
>  	IMX_DMATYPE_MULTI_SAI,	/* MULTI FIFOs For Audio */
>  	IMX_DMATYPE_HDMI,       /* HDMI Audio */
> +	IMX_DMATYPE_I2C,	/* I2C */
>  };
> 
>  enum imx_dma_prio {
> 
> --
> 2.34.1