diff options
| -rw-r--r-- | drivers/media/video/cx18/cx18-av-firmware.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/drivers/media/video/cx18/cx18-av-firmware.c b/drivers/media/video/cx18/cx18-av-firmware.c index 49a55cc8d83..ab99030dc18 100644 --- a/drivers/media/video/cx18/cx18-av-firmware.c +++ b/drivers/media/video/cx18/cx18-av-firmware.c @@ -27,6 +27,48 @@ #define CX18_AUDIO_ENABLE 0xc72014 #define FWFILE "v4l-cx23418-dig.fw" +static int cx18_av_verifyfw(struct cx18 *cx, const struct firmware *fw) +{ + struct v4l2_subdev *sd = &cx->av_state.sd; + int ret = 0; + const u8 *data; + u32 size; + int addr; + u32 expected, dl_control; + + /* Ensure we put the 8051 in reset and enable firmware upload mode */ + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + do { + dl_control &= 0x00ffffff; + dl_control |= 0x0f000000; + cx18_av_write4_noretry(cx, CXADEC_DL_CTL, dl_control); + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + } while ((dl_control & 0xff000000) != 0x0f000000); + + /* Read and auto increment until at address 0x0000 */ + while (dl_control & 0x3fff) + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + + data = fw->data; + size = fw->size; + for (addr = 0; addr < size; addr++) { + dl_control &= 0xffff3fff; /* ignore top 2 bits of address */ + expected = 0x0f000000 | ((u32)data[addr] << 16) | addr; + if (expected != dl_control) { + CX18_ERR_DEV(sd, "verification of %s firmware load " + "failed: expected %#010x got %#010x\n", + FWFILE, expected, dl_control); + ret = -EIO; + break; + } + dl_control = cx18_av_read4(cx, CXADEC_DL_CTL); + } + if (ret == 0) + CX18_INFO_DEV(sd, "verified load of %s firmware (%d bytes)\n", + FWFILE, size); + return ret; +} + int cx18_av_loadfw(struct cx18 *cx) { struct v4l2_subdev *sd = &cx->av_state.sd; @@ -95,6 +137,12 @@ int cx18_av_loadfw(struct cx18 *cx) } cx18_av_write4_expect(cx, CXADEC_DL_CTL, + 0x03000000 | fw->size, 0x03000000, 0x13000000); + + CX18_INFO_DEV(sd, "loaded %s firmware (%d bytes)\n", FWFILE, size); + + if (cx18_av_verifyfw(cx, fw) == 0) + cx18_av_write4_expect(cx, CXADEC_DL_CTL, 0x13000000 | fw->size, 0x13000000, 0x13000000); /* Output to the 416 */ @@ -143,7 +191,5 @@ int cx18_av_loadfw(struct cx18 *cx) cx18_av_write4_expect(cx, CXADEC_STD_DET_CTL, v, v, 0x3F00FFFF); release_firmware(fw); - - CX18_INFO_DEV(sd, "loaded %s firmware (%d bytes)\n", FWFILE, size); return 0; } |