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path: root/drivers/media/dvb
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Diffstat (limited to 'drivers/media/dvb')
-rw-r--r--drivers/media/dvb/frontends/tda1004x.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/tda1004x.c b/drivers/media/dvb/frontends/tda1004x.c
index ecfa8c7a978..0beb370792a 100644
--- a/drivers/media/dvb/frontends/tda1004x.c
+++ b/drivers/media/dvb/frontends/tda1004x.c
@@ -49,6 +49,7 @@ struct tda1004x_state {
/* private demod data */
u8 initialised;
enum tda1004x_demod demod_type;
+ u8 fw_version;
};
@@ -380,6 +381,25 @@ static int tda10045_fwupload(struct dvb_frontend* fe)
return tda1004x_check_upload_ok(state, 0x2c);
}
+static int tda10046_get_fw_version(struct tda1004x_state *state,
+ const struct firmware *fw)
+{
+ const unsigned char pattern[] = { 0x67, 0x00, 0x50, 0x62, 0x5e, 0x18, 0x67 };
+ unsigned int i;
+
+ /* area guessed from firmware v20, v21 and v25 */
+ for (i = 0x660; i < 0x700; i++) {
+ if (!memcmp(&fw->data[i], pattern, sizeof(pattern))) {
+ state->fw_version = fw->data[i + sizeof(pattern)];
+ printk(KERN_INFO "tda1004x: using firmware v%02x\n",
+ state->fw_version);
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+
static int tda10046_fwupload(struct dvb_frontend* fe)
{
struct tda1004x_state* state = fe->demodulator_priv;
@@ -393,7 +413,7 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
msleep(100);
/* don't re-upload unless necessary */
- if (tda1004x_check_upload_ok(state, 0x20) == 0)
+ if (tda1004x_check_upload_ok(state, state->fw_version) == 0)
return 0;
/* request the firmware, this will block until someone uploads it */
@@ -404,6 +424,17 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
return ret;
}
+ if (fw->size < 24478) { /* size of firmware v20, which is the smallest of v20, v21 and v25 */
+ printk("tda1004x: firmware file seems to be too small (%d bytes)\n", fw->size);
+ return -EINVAL;
+ }
+
+ ret = tda10046_get_fw_version(state, fw);
+ if (ret < 0) {
+ printk("tda1004x: unable to find firmware version\n");
+ return ret;
+ }
+
/* set parameters */
tda1004x_write_byteI(state, TDA10046H_CONFPLL2, 10);
tda1004x_write_byteI(state, TDA10046H_CONFPLL3, state->config->n_i2c);
@@ -427,7 +458,7 @@ static int tda10046_fwupload(struct dvb_frontend* fe)
msleep(1);
}
- return tda1004x_check_upload_ok(state, 0x20);
+ return tda1004x_check_upload_ok(state, state->fw_version);
}
static int tda1004x_encode_fec(int fec)
@@ -1185,6 +1216,7 @@ struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config,
memcpy(&state->ops, &tda10046_ops, sizeof(struct dvb_frontend_ops));
state->initialised = 0;
state->demod_type = TDA1004X_DEMOD_TDA10046;
+ state->fw_version = 0x20; /* dummy default value */
/* check if the demod is there */
if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x46) {