diff options
Diffstat (limited to 'drivers/media/pci/cx88/cx88-tvaudio.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-tvaudio.c | 63 |
1 files changed, 36 insertions, 27 deletions
diff --git a/drivers/media/pci/cx88/cx88-tvaudio.c b/drivers/media/pci/cx88/cx88-tvaudio.c index 20f6924abe35..545ad4c4d1c7 100644 --- a/drivers/media/pci/cx88/cx88-tvaudio.c +++ b/drivers/media/pci/cx88/cx88-tvaudio.c @@ -57,7 +57,8 @@ MODULE_PARM_DESC(always_analog, "force analog audio out"); static unsigned int radio_deemphasis; module_param(radio_deemphasis, int, 0644); -MODULE_PARM_DESC(radio_deemphasis, "Radio deemphasis time constant, 0=None, 1=50us (elsewhere), 2=75us (USA)"); +MODULE_PARM_DESC(radio_deemphasis, + "Radio deemphasis time constant, 0=None, 1=50us (elsewhere), 2=75us (USA)"); #define dprintk(fmt, arg...) do { \ if (audio_debug) \ @@ -141,7 +142,10 @@ static void set_audio_finish(struct cx88_core *core, u32 ctl) if (core->board.mpeg & CX88_MPEG_BLACKBIRD) { cx_write(AUD_I2SINPUTCNTL, 4); cx_write(AUD_BAUDRATE, 1); - /* 'pass-thru mode': this enables the i2s output to the mpeg encoder */ + /* + * 'pass-thru mode': this enables the i2s + * output to the mpeg encoder + */ cx_set(AUD_CTL, EN_I2SOUT_ENABLE); cx_write(AUD_I2SOUTPUTCNTL, 1); cx_write(AUD_I2SCNTL, 0); @@ -634,7 +638,6 @@ static void set_audio_standard_A2(struct cx88_core *core, u32 mode) case WW_M: dprintk("%s Warning: wrong value\n", __func__); return; - break; } mode |= EN_FMRADIO_EN_RDS | EN_DMTRX_SUMDIFF; @@ -691,13 +694,15 @@ static void set_audio_standard_FM(struct cx88_core *core, { /* end of list */ }, }; - /* It is enough to leave default values? */ - /* No, it's not! The deemphasis registers are reset to the 75us + /* + * It is enough to leave default values? + * + * No, it's not! The deemphasis registers are reset to the 75us * values by default. Analyzing the spectrum of the decoded audio * reveals that "no deemphasis" is the same as 75 us, while the 50 us - * setting results in less deemphasis. */ + * setting results in less deemphasis. + */ static const struct rlist fm_no_deemph[] = { - {AUD_POLYPH80SCALEFAC, 0x0003}, { /* end of list */ }, }; @@ -741,7 +746,7 @@ static int cx88_detect_nicam(struct cx88_core *core) } /* wait a little bit for next reading status */ - msleep(10); + usleep_range(10000, 20000); } dprintk("nicam is not detected.\n"); @@ -762,8 +767,10 @@ void cx88_set_tvaudio(struct cx88_core *core) /* prepare all dsp registers */ set_audio_standard_A2(core, EN_A2_FORCE_MONO1); - /* set nicam mode - otherwise - AUD_NICAM_STATUS2 contains wrong values */ + /* + * set nicam mode - otherwise + * AUD_NICAM_STATUS2 contains wrong values + */ set_audio_standard_NICAM(core, EN_NICAM_AUTO_STEREO); if (cx88_detect_nicam(core) == 0) { /* fall back to fm / am mono */ @@ -797,19 +804,22 @@ void cx88_set_tvaudio(struct cx88_core *core) pr_info("unknown tv audio mode [%d]\n", core->tvaudio); break; } - return; } +EXPORT_SYMBOL(cx88_set_tvaudio); void cx88_newstation(struct cx88_core *core) { core->audiomode_manual = UNSET; core->last_change = jiffies; } +EXPORT_SYMBOL(cx88_newstation); void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t) { - static const char * const m[] = { "stereo", "dual mono", "mono", "sap" }; - static const char * const p[] = { "no pilot", "pilot c1", "pilot c2", "?" }; + static const char * const m[] = { "stereo", "dual mono", + "mono", "sap" }; + static const char * const p[] = { "no pilot", "pilot c1", + "pilot c2", "?" }; u32 reg, mode, pilot; reg = cx_read(AUD_STATUS); @@ -866,13 +876,16 @@ void cx88_get_stereo(struct cx88_core *core, struct v4l2_tuner *t) /* If software stereo detection is not supported... */ if (t->rxsubchans == UNSET) { t->rxsubchans = V4L2_TUNER_SUB_MONO; - /* If the hardware itself detected stereo, also return - stereo as an available subchannel */ + /* + * If the hardware itself detected stereo, also return + * stereo as an available subchannel + */ if (t->audmode == V4L2_TUNER_MODE_STEREO) t->rxsubchans |= V4L2_TUNER_SUB_STEREO; } - return; } +EXPORT_SYMBOL(cx88_get_stereo); + void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual) { @@ -928,7 +941,8 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual) break; } } else { - if ((core->tvaudio == WW_I) || (core->tvaudio == WW_L)) { + if ((core->tvaudio == WW_I) || + (core->tvaudio == WW_L)) { /* fall back to fm / am mono */ set_audio_standard_A2(core, EN_A2_FORCE_MONO1); } else { @@ -976,8 +990,8 @@ void cx88_set_stereo(struct cx88_core *core, u32 mode, int manual) cx_read(AUD_CTL), cx_sread(SHADOW_AUD_VOL_CTL)); cx_andor(AUD_CTL, mask, ctl); } - return; } +EXPORT_SYMBOL(cx88_set_stereo); int cx88_audio_thread(void *data) { @@ -1027,8 +1041,10 @@ int cx88_audio_thread(void *data) case WW_FM: case WW_I2SADC: hw_autodetect: - /* stereo autodetection is supported by hardware so - we don't need to do it manually. Do nothing. */ + /* + * stereo autodetection is supported by hardware so + * we don't need to do it manually. Do nothing. + */ break; } } @@ -1036,11 +1052,4 @@ hw_autodetect: dprintk("cx88: tvaudio thread exiting\n"); return 0; } - -/* ----------------------------------------------------------- */ - -EXPORT_SYMBOL(cx88_set_tvaudio); -EXPORT_SYMBOL(cx88_newstation); -EXPORT_SYMBOL(cx88_set_stereo); -EXPORT_SYMBOL(cx88_get_stereo); EXPORT_SYMBOL(cx88_audio_thread); |