dmaengine: imx-sdma: Add i2c dma support

New sdma script (sdma-6q: v3.6, sdma-7d: v4.6) support i2c at imx8mp and
imx6ull. So add I2C dma support.

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Acked-by: Clark Wang <xiaoning.wang@nxp.com>
Reviewed-by: Joy Zou <joy.zou@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20240419150729.1071904-3-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 4a4d44ed03c8bd13dbbb508ea3582da208f04d46..003e1580b9023b7f8f8e1fe7f3034837a9d49a1d 100644 (file)
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -251,6 +251,8 @@ 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 */
        union { s32 v3_end; s32 mcu_2_zqspi_addr; };
        /* End of v4 array */
@@ -1082,6 +1084,11 @@ 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 cfec5f946e2376e5cadb83d943dda4a641eeb665..76a8de9ae151752ef0ad1d947f66f5c88a06a326 100644 (file)
--- 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 {