dmaengine: imx-sdma: Add i.MX7 support

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

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

2 files changed, 27 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
index 175f0e44ed85..3c9a57a8443b 100644
--- a/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
+++ b/Documentation/devicetree/bindings/dma/fsl-imx-sdma.txt
@@ -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.
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 5f55c5a6708b..6eade3828aca 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -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",
@@ -499,6 +517,9 @@ 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;