diff options
Diffstat (limited to 'drivers/media/tuners/tuner-xc2028.c')
| -rw-r--r-- | drivers/media/tuners/tuner-xc2028.c | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/drivers/media/tuners/tuner-xc2028.c b/drivers/media/tuners/tuner-xc2028.c index 878d2c4d9e8..6ef93ee1fdc 100644 --- a/drivers/media/tuners/tuner-xc2028.c +++ b/drivers/media/tuners/tuner-xc2028.c @@ -24,6 +24,9 @@ #include <linux/dvb/frontend.h> #include "dvb_frontend.h" +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 80 + /* Registers (Write-only) */ #define XREG_INIT 0x00 #define XREG_RF_FREQ 0x02 @@ -131,15 +134,6 @@ struct xc2028_data { _rc; \ }) -#define i2c_rcv(priv, buf, size) ({ \ - int _rc; \ - _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \ - if (size != _rc) \ - tuner_err("i2c input error: rc = %d (should be %d)\n", \ - _rc, (int)size); \ - _rc; \ -}) - #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \ int _rc; \ _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \ @@ -273,6 +267,7 @@ static int check_device_status(struct xc2028_data *priv) case XC2028_WAITING_FIRMWARE: return -EAGAIN; case XC2028_ACTIVE: + return 1; case XC2028_SLEEP: return 0; case XC2028_NODEV: @@ -547,7 +542,10 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type, { struct xc2028_data *priv = fe->tuner_priv; int pos, rc; - unsigned char *p, *endp, buf[priv->ctrl.max_len]; + unsigned char *p, *endp, buf[MAX_XFER_SIZE]; + + if (priv->ctrl.max_len > sizeof(buf)) + priv->ctrl.max_len = sizeof(buf); tuner_dbg("%s called\n", __func__); @@ -572,7 +570,7 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type, return -EINVAL; } - size = le16_to_cpu(*(__u16 *) p); + size = le16_to_cpu(*(__le16 *) p); p += sizeof(size); if (size == 0xffff) @@ -683,7 +681,7 @@ static int load_scode(struct dvb_frontend *fe, unsigned int type, /* 16 SCODE entries per file; each SCODE entry is 12 bytes and * has a 2-byte size header in the firmware format. */ if (priv->firm[pos].size != 14 * 16 || scode >= 16 || - le16_to_cpu(*(__u16 *)(p + 14 * scode)) != 12) + le16_to_cpu(*(__le16 *)(p + 14 * scode)) != 12) return -EINVAL; p += 14 * scode + 2; } @@ -712,6 +710,8 @@ static int load_scode(struct dvb_frontend *fe, unsigned int type, return 0; } +static int xc2028_sleep(struct dvb_frontend *fe); + static int check_firmware(struct dvb_frontend *fe, unsigned int type, v4l2_std_id std, __u16 int_freq) { @@ -884,7 +884,7 @@ read_not_reliable: return 0; fail: - priv->state = XC2028_SLEEP; + priv->state = XC2028_NO_FIRMWARE; memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); if (retry_count < 8) { @@ -894,6 +894,9 @@ fail: goto retry; } + /* Firmware didn't load. Put the device to sleep */ + xc2028_sleep(fe); + if (rc == -ENOENT) rc = -EINVAL; return rc; @@ -911,6 +914,12 @@ static int xc2028_signal(struct dvb_frontend *fe, u16 *strength) if (rc < 0) return rc; + /* If the device is sleeping, no channel is tuned */ + if (!rc) { + *strength = 0; + return 0; + } + mutex_lock(&priv->lock); /* Sync Lock Indicator */ @@ -958,6 +967,12 @@ static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc) if (rc < 0) return rc; + /* If the device is sleeping, no channel is tuned */ + if (!rc) { + *afc = 0; + return 0; + } + mutex_lock(&priv->lock); /* Sync Lock Indicator */ @@ -1092,6 +1107,10 @@ static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, offset += 200000; } #endif + break; + default: + tuner_err("Unsupported tuner type %d.\n", new_type); + break; } div = (freq - offset + DIV / 2) / DIV; @@ -1275,6 +1294,10 @@ static int xc2028_sleep(struct dvb_frontend *fe) if (rc < 0) return rc; + /* Device is already in sleep mode */ + if (!rc) + return 0; + /* Avoid firmware reload on slow devices or if PM disabled */ if (no_poweroff || priv->ctrl.disable_power_mgmt) return 0; @@ -1292,7 +1315,8 @@ static int xc2028_sleep(struct dvb_frontend *fe) else rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00}); - priv->state = XC2028_SLEEP; + if (rc >= 0) + priv->state = XC2028_SLEEP; mutex_unlock(&priv->lock); @@ -1360,7 +1384,7 @@ static void load_firmware_cb(const struct firmware *fw, if (rc < 0) return; - priv->state = XC2028_SLEEP; + priv->state = XC2028_ACTIVE; } static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg) |