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Commit ed6eae09 authored by himta ram's avatar himta ram Committed by Gerrit - the friendly Code Review server
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radio: RTC6226: add support for set frequency band range 



Add support for set top and bottom frequency for band.

Change-Id: I38dc220f33748b8ef30b74b9786480eefbe365c8
Signed-off-by: default avatarhimta ram <hram@codeaurora.org>
parent 631f8ae4

drivers/media/radio/rtc6226/radio-rtc6226-common.c

+26 −75
Original line number Diff line number Diff line
@@ -120,64 +120,12 @@ 
/* 0: 87.5 - 108 MHz (USA, Europe)*/

/* 1: 76   - 108 MHz (Japan wide band) */

/* 2: 76   -  90 MHz (Japan) */

static unsigned short band;



/* De-emphasis */

/* 0: 75 us (USA) */

/* 1: 50 us (Europe, Australia, Japan) */

static unsigned short de;



static const struct v4l2_frequency_band bands[] = {

	{

		.type = V4L2_TUNER_RADIO,

		.index = 0,

		.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |

			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO |

			    V4L2_TUNER_CAP_FREQ_BANDS |

			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |

			    V4L2_TUNER_CAP_HWSEEK_WRAP,

		.rangelow   =  87500,

		.rangehigh  = 108000,

		.modulation = V4L2_BAND_MODULATION_FM,

	},

	{

		.type = V4L2_TUNER_RADIO,

		.index = 1,

		.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |

			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO |

			    V4L2_TUNER_CAP_FREQ_BANDS |

			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |

			    V4L2_TUNER_CAP_HWSEEK_WRAP,

		.rangelow   =  76000,

		.rangehigh  = 108000,

		.modulation = V4L2_BAND_MODULATION_FM,

	},

	{

		.type = V4L2_TUNER_RADIO,

		.index = 2,

		.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |

			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO |

			    V4L2_TUNER_CAP_FREQ_BANDS |

			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |

			    V4L2_TUNER_CAP_HWSEEK_WRAP,

		.rangelow   =  76000,

		.rangehigh  =  91000,

		.modulation = V4L2_BAND_MODULATION_FM,

	},

	{

		.type = V4L2_TUNER_RADIO,

		.index = 3,

		.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |

			    V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_BLOCK_IO |

			    V4L2_TUNER_CAP_FREQ_BANDS |

			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |

			    V4L2_TUNER_CAP_HWSEEK_WRAP,

		.rangelow   =  64000,

		.rangehigh  =  76000,

		.modulation = V4L2_BAND_MODULATION_FM,

	},

};



wait_queue_head_t rtc6226_wq;

int rtc6226_wq_flag = NO_WAIT;

#ifdef New_VolumeControl
@@ -753,8 +701,8 @@ static bool is_valid_freq(struct rtc6226_device *radio, u32 freq) 
	u32 band_high_limit;

	u8 spacing = 0;



	band_low_limit = bands[radio->band].rangelow;

	band_high_limit = bands[radio->band].rangehigh;

	band_low_limit = radio->recv_conf.band_low_limit * TUNE_STEP_SIZE;

	band_high_limit = radio->recv_conf.band_high_limit * TUNE_STEP_SIZE;



	if (radio->space == 0)

		spacing = CH_SPACING_200;
@@ -2197,6 +2145,8 @@ static int rtc6226_vidioc_s_tuner(struct file *file, void *priv, 
{

	struct rtc6226_device *radio = video_drvdata(file);

	int retval = 0;

	u16 bottom_freq;

	u16 top_freq;



	pr_info("%s entry\n", __func__);
@@ -2214,33 +2164,34 @@ static int rtc6226_vidioc_s_tuner(struct file *file, void *priv, 
		radio->registers[MPXCFG] &= ~MPXCFG_CSR0_MONO; /* try stereo */

		break;

	default:

		goto done;

		pr_debug("%s audmode is not set\n", __func__);

	}



	retval = rtc6226_set_register(radio, MPXCFG);



	pr_info("%s low:%d high:%d\n", __func__,

		tuner->rangelow, tuner->rangehigh);

	/*  unit is 10kHz */

	top_freq = (u16)((tuner->rangehigh / TUNE_PARAM) / TUNE_STEP_SIZE);

	bottom_freq = (u16)((tuner->rangelow / TUNE_PARAM) / TUNE_STEP_SIZE);



	/* set band */

	if (tuner->rangelow || tuner->rangehigh) {

		for (band = 0; band < ARRAY_SIZE(bands); band++) {

			if (bands[band].rangelow  == tuner->rangelow &&

				bands[band].rangehigh == tuner->rangehigh)

				break;

		}

		if (band == ARRAY_SIZE(bands)) {

			pr_err("%s err\n", __func__);

			band = 0;

		}

	} else

		band = 0; /* If nothing is specified seek 87.5 - 108 Mhz */

	pr_debug("%s low:%d high:%d\n", __func__,

		bottom_freq, top_freq);



	if (radio->band != band) {

		radio->registers[CHANNEL] |= (band  << 12);

		rtc6226_set_register(radio, MPXCFG);

		radio->band = band;

	}

	radio->registers[RADIOSEEKCFG1] = top_freq;

	radio->registers[RADIOSEEKCFG2] = bottom_freq;



	retval = rtc6226_set_register(radio, RADIOSEEKCFG1);

	if (retval < 0)

		pr_err("In %s, error %d setting higher limit freq\n",

			__func__, retval);

	else

		radio->recv_conf.band_high_limit = top_freq;



	retval = rtc6226_set_register(radio, RADIOSEEKCFG2);

	if (retval < 0)

		pr_err("In %s, error %d setting lower limit freq\n",

			__func__, retval);

	else

		radio->recv_conf.band_low_limit = bottom_freq;

done:

	pr_info("%s exit %d\n", __func__, retval);

	return retval;