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Commit b7d2648a authored by Fabio Estevam's avatar Fabio Estevam Committed by Vinod Koul
Browse files

dmaengine: imx-sdma: Add i.MX7 support 



Allow i.MX7 to work with the imx-sdma driver.

Signed-off-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Tested-by: default avatarStefan Agner <stefan@agner.ch>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent e4b75760

Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt

+1 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ Required properties: 
      "fsl,imx51-sdma"

      "fsl,imx53-sdma"

      "fsl,imx6q-sdma"

      "fsl,imx7d-sdma"

  The -to variants should be preferred since they allow to determine the

  correct ROM script addresses needed for the driver to work without additional

  firmware.

drivers/dma/imx-sdma.c

+26 −0
Original line number Diff line number Diff line
@@ -479,6 +479,24 @@ static struct sdma_driver_data sdma_imx6q = { 
	.script_addrs = &sdma_script_imx6q,

};



static struct sdma_script_start_addrs sdma_script_imx7d = {

	.ap_2_ap_addr = 644,

	.uart_2_mcu_addr = 819,

	.mcu_2_app_addr = 749,

	.uartsh_2_mcu_addr = 1034,

	.mcu_2_shp_addr = 962,

	.app_2_mcu_addr = 685,

	.shp_2_mcu_addr = 893,

	.spdif_2_mcu_addr = 1102,

	.mcu_2_spdif_addr = 1136,

};



static struct sdma_driver_data sdma_imx7d = {

	.chnenbl0 = SDMA_CHNENBL0_IMX35,

	.num_events = 48,

	.script_addrs = &sdma_script_imx7d,

};



static const struct platform_device_id sdma_devtypes[] = {

	{

		.name = "imx25-sdma",
@@ -498,6 +516,9 @@ static const struct platform_device_id sdma_devtypes[] = { 
	}, {

		.name = "imx6q-sdma",

		.driver_data = (unsigned long)&sdma_imx6q,

	}, {

		.name = "imx7d-sdma",

		.driver_data = (unsigned long)&sdma_imx7d,

	}, {

		/* sentinel */

	}
@@ -511,6 +532,7 @@ static const struct of_device_id sdma_dt_ids[] = { 
	{ .compatible = "fsl,imx35-sdma", .data = &sdma_imx35, },

	{ .compatible = "fsl,imx31-sdma", .data = &sdma_imx31, },

	{ .compatible = "fsl,imx25-sdma", .data = &sdma_imx25, },

	{ .compatible = "fsl,imx7d-sdma", .data = &sdma_imx7d, },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, sdma_dt_ids);
@@ -1375,6 +1397,7 @@ 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

#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3	41

#define SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V4	42



static void sdma_add_scripts(struct sdma_engine *sdma,

		const struct sdma_script_start_addrs *addr)
@@ -1424,6 +1447,9 @@ static void sdma_load_firmware(const struct firmware *fw, void *context) 
	case 3:

		sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V3;

		break;

	case 4:

		sdma->script_number = SDMA_SCRIPT_ADDRS_ARRAY_SIZE_V4;

		break;

	default:

		dev_err(sdma->dev, "unknown firmware version\n");

		goto err_firmware;