Author: gonzo
Date: Wed Dec 21 01:38:44 2016
New Revision: 310344
URL: https://svnweb.freebsd.org/changeset/base/310344

Log:
  [iMX6] Fix SDMA driver build
  
  - Place const modifiers where required
  - Make sure sdma device is attahched before consumers like SSI
  
  Reviewed by:  br
  MFC after:    1 week
  Differential Revision:        https://reviews.freebsd.org/D8874

Modified:
  head/sys/arm/freescale/imx/imx6_sdma.c
  head/sys/arm/freescale/imx/imx6_sdma.h

Modified: head/sys/arm/freescale/imx/imx6_sdma.c
==============================================================================
--- head/sys/arm/freescale/imx/imx6_sdma.c      Wed Dec 21 01:32:19 2016        
(r310343)
+++ head/sys/arm/freescale/imx/imx6_sdma.c      Wed Dec 21 01:38:44 2016        
(r310344)
@@ -351,7 +351,7 @@ sdma_configure(int chn, struct sdma_conf
 static int
 load_firmware(struct sdma_softc *sc)
 {
-       struct sdma_firmware_header *header;
+       const struct sdma_firmware_header *header;
        const struct firmware *fp;
 
        fp = firmware_get("sdma_fw");
@@ -360,14 +360,14 @@ load_firmware(struct sdma_softc *sc)
                return (-1);
        }
 
-       header = (struct sdma_firmware_header *)fp->data;
+       header = fp->data;
        if (header->magic != FW_HEADER_MAGIC) {
                device_printf(sc->dev, "Can't use firmware.\n");
                return (-1);
        }
 
        sc->fw_header = header;
-       sc->fw_scripts = (void *)((char *)header +
+       sc->fw_scripts = (const void *)((const char *)header +
                                header->script_addrs_start);
 
        return (0);
@@ -377,14 +377,14 @@ static int
 boot_firmware(struct sdma_softc *sc)
 {
        struct sdma_buffer_descriptor *bd0;
-       uint32_t *ram_code;
+       const uint32_t *ram_code;
        int timeout;
        int ret;
        int chn;
        int sz;
        int i;
 
-       ram_code = (void *)((char *)sc->fw_header +
+       ram_code = (const void *)((const char *)sc->fw_header +
                        sc->fw_header->ram_code_start);
 
        /* Make sure SDMA has not started yet */
@@ -514,4 +514,5 @@ static driver_t sdma_driver = {
 
 static devclass_t sdma_devclass;
 
-DRIVER_MODULE(sdma, simplebus, sdma_driver, sdma_devclass, 0, 0);
+EARLY_DRIVER_MODULE(sdma, simplebus, sdma_driver, sdma_devclass, 0, 0,
+    BUS_PASS_RESOURCE);

Modified: head/sys/arm/freescale/imx/imx6_sdma.h
==============================================================================
--- head/sys/arm/freescale/imx/imx6_sdma.h      Wed Dec 21 01:32:19 2016        
(r310343)
+++ head/sys/arm/freescale/imx/imx6_sdma.h      Wed Dec 21 01:38:44 2016        
(r310344)
@@ -221,8 +221,8 @@ struct sdma_softc {
        uint32_t                        num_bd;
        uint32_t                        ccb_phys;
        uint32_t                        context_phys;
-       struct sdma_firmware_header     *fw_header;
-       struct sdma_script_start_addrs  *fw_scripts;
+       const struct sdma_firmware_header       *fw_header;
+       const struct sdma_script_start_addrs    *fw_scripts;
 };
 
 struct sdma_conf {
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