[media] tea575x: Move from sound to media
Move tea575x from sound/i2c/other to drivers/media/radio Includes Kconfig changes by Hans Verkuil. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
这个提交包含在：
Ondrej Zary
@@ -8,10 +8,8 @@ snd-ak4117-objs := ak4117.o
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snd-ak4113-objs := ak4113.o
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snd-ak4xxx-adda-objs := ak4xxx-adda.o
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snd-pt2258-objs := pt2258.o
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snd-tea575x-tuner-objs := tea575x-tuner.o
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# Module Dependency
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obj-$(CONFIG_SND_PDAUDIOCF) += snd-ak4117.o
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obj-$(CONFIG_SND_ICE1712) += snd-ak4xxx-adda.o
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obj-$(CONFIG_SND_ICE1724) += snd-ak4114.o snd-ak4113.o snd-ak4xxx-adda.o snd-pt2258.o
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obj-$(CONFIG_SND_TEA575X) += snd-tea575x-tuner.o
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@@ -1,584 +0,0 @@
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/*
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* ALSA driver for TEA5757/5759 Philips AM/FM radio tuner chips
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*
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* Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <asm/io.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.h>
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#include <media/tea575x.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("Routines for control of TEA5757/5759 Philips AM/FM radio tuner chips");
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MODULE_LICENSE("GPL");
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/*
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* definitions
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*/
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#define TEA575X_BIT_SEARCH (1<<24) /* 1 = search action, 0 = tuned */
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#define TEA575X_BIT_UPDOWN (1<<23) /* 0 = search down, 1 = search up */
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#define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */
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#define TEA575X_BIT_BAND_MASK (3<<20)
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#define TEA575X_BIT_BAND_FM (0<<20)
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#define TEA575X_BIT_BAND_MW (1<<20)
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#define TEA575X_BIT_BAND_LW (2<<20)
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#define TEA575X_BIT_BAND_SW (3<<20)
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#define TEA575X_BIT_PORT_0 (1<<19) /* user bit */
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#define TEA575X_BIT_PORT_1 (1<<18) /* user bit */
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#define TEA575X_BIT_SEARCH_MASK (3<<16) /* search level */
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#define TEA575X_BIT_SEARCH_5_28 (0<<16) /* FM >5uV, AM >28uV */
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#define TEA575X_BIT_SEARCH_10_40 (1<<16) /* FM >10uV, AM > 40uV */
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#define TEA575X_BIT_SEARCH_30_63 (2<<16) /* FM >30uV, AM > 63uV */
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#define TEA575X_BIT_SEARCH_150_1000 (3<<16) /* FM > 150uV, AM > 1000uV */
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#define TEA575X_BIT_DUMMY (1<<15) /* buffer */
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#define TEA575X_BIT_FREQ_MASK 0x7fff
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enum { BAND_FM, BAND_FM_JAPAN, BAND_AM };
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static const struct v4l2_frequency_band bands[] = {
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{
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.type = V4L2_TUNER_RADIO,
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.index = 0,
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.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
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V4L2_TUNER_CAP_FREQ_BANDS,
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.rangelow = 87500 * 16,
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.rangehigh = 108000 * 16,
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.modulation = V4L2_BAND_MODULATION_FM,
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},
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{
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.type = V4L2_TUNER_RADIO,
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.index = 0,
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.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
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V4L2_TUNER_CAP_FREQ_BANDS,
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.rangelow = 76000 * 16,
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.rangehigh = 91000 * 16,
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.modulation = V4L2_BAND_MODULATION_FM,
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},
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{
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.type = V4L2_TUNER_RADIO,
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.index = 1,
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.capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_FREQ_BANDS,
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.rangelow = 530 * 16,
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.rangehigh = 1710 * 16,
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.modulation = V4L2_BAND_MODULATION_AM,
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},
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};
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/*
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* lowlevel part
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*/
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static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val)
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{
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u16 l;
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u8 data;
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if (tea->ops->write_val)
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return tea->ops->write_val(tea, val);
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tea->ops->set_direction(tea, 1);
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udelay(16);
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for (l = 25; l > 0; l--) {
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data = (val >> 24) & TEA575X_DATA;
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val <<= 1; /* shift data */
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tea->ops->set_pins(tea, data | TEA575X_WREN);
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udelay(2);
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tea->ops->set_pins(tea, data | TEA575X_WREN | TEA575X_CLK);
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udelay(2);
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tea->ops->set_pins(tea, data | TEA575X_WREN);
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udelay(2);
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}
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if (!tea->mute)
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tea->ops->set_pins(tea, 0);
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}
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static u32 snd_tea575x_read(struct snd_tea575x *tea)
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{
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u16 l, rdata;
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u32 data = 0;
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if (tea->ops->read_val)
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return tea->ops->read_val(tea);
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tea->ops->set_direction(tea, 0);
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tea->ops->set_pins(tea, 0);
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udelay(16);
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for (l = 24; l--;) {
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tea->ops->set_pins(tea, TEA575X_CLK);
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udelay(2);
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if (!l)
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tea->tuned = tea->ops->get_pins(tea) & TEA575X_MOST ? 0 : 1;
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tea->ops->set_pins(tea, 0);
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udelay(2);
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data <<= 1; /* shift data */
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rdata = tea->ops->get_pins(tea);
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if (!l)
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tea->stereo = (rdata & TEA575X_MOST) ? 0 : 1;
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if (rdata & TEA575X_DATA)
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data++;
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udelay(2);
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}
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if (tea->mute)
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tea->ops->set_pins(tea, TEA575X_WREN);
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return data;
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}
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static u32 snd_tea575x_val_to_freq(struct snd_tea575x *tea, u32 val)
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{
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u32 freq = val & TEA575X_BIT_FREQ_MASK;
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if (freq == 0)
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return freq;
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switch (tea->band) {
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case BAND_FM:
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/* freq *= 12.5 */
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freq *= 125;
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freq /= 10;
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/* crystal fixup */
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freq -= TEA575X_FMIF;
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break;
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case BAND_FM_JAPAN:
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/* freq *= 12.5 */
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freq *= 125;
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freq /= 10;
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/* crystal fixup */
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freq += TEA575X_FMIF;
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break;
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case BAND_AM:
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/* crystal fixup */
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freq -= TEA575X_AMIF;
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break;
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}
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return clamp(freq * 16, bands[tea->band].rangelow,
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bands[tea->band].rangehigh); /* from kHz */
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}
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static u32 snd_tea575x_get_freq(struct snd_tea575x *tea)
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{
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return snd_tea575x_val_to_freq(tea, snd_tea575x_read(tea));
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}
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void snd_tea575x_set_freq(struct snd_tea575x *tea)
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{
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u32 freq = tea->freq / 16; /* to kHz */
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u32 band = 0;
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switch (tea->band) {
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case BAND_FM:
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band = TEA575X_BIT_BAND_FM;
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/* crystal fixup */
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freq += TEA575X_FMIF;
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/* freq /= 12.5 */
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freq *= 10;
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freq /= 125;
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break;
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case BAND_FM_JAPAN:
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band = TEA575X_BIT_BAND_FM;
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/* crystal fixup */
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freq -= TEA575X_FMIF;
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/* freq /= 12.5 */
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freq *= 10;
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freq /= 125;
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break;
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case BAND_AM:
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band = TEA575X_BIT_BAND_MW;
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/* crystal fixup */
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freq += TEA575X_AMIF;
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break;
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}
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tea->val &= ~(TEA575X_BIT_FREQ_MASK | TEA575X_BIT_BAND_MASK);
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tea->val |= band;
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tea->val |= freq & TEA575X_BIT_FREQ_MASK;
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snd_tea575x_write(tea, tea->val);
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tea->freq = snd_tea575x_val_to_freq(tea, tea->val);
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}
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/*
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* Linux Video interface
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*/
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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strlcpy(v->driver, tea->v4l2_dev->name, sizeof(v->driver));
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strlcpy(v->card, tea->card, sizeof(v->card));
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strlcat(v->card, tea->tea5759 ? " TEA5759" : " TEA5757", sizeof(v->card));
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strlcpy(v->bus_info, tea->bus_info, sizeof(v->bus_info));
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v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
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if (!tea->cannot_read_data)
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v->device_caps |= V4L2_CAP_HW_FREQ_SEEK;
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v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
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return 0;
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}
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static int vidioc_enum_freq_bands(struct file *file, void *priv,
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struct v4l2_frequency_band *band)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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int index;
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if (band->tuner != 0)
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return -EINVAL;
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switch (band->index) {
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case 0:
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if (tea->tea5759)
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index = BAND_FM_JAPAN;
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else
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index = BAND_FM;
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break;
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case 1:
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if (tea->has_am) {
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index = BAND_AM;
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break;
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}
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/* Fall through */
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default:
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return -EINVAL;
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}
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*band = bands[index];
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if (!tea->cannot_read_data)
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band->capability |= V4L2_TUNER_CAP_HWSEEK_BOUNDED;
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return 0;
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}
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static int vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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struct v4l2_frequency_band band_fm = { 0, };
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if (v->index > 0)
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return -EINVAL;
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snd_tea575x_read(tea);
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vidioc_enum_freq_bands(file, priv, &band_fm);
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memset(v, 0, sizeof(*v));
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strlcpy(v->name, tea->has_am ? "FM/AM" : "FM", sizeof(v->name));
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v->type = V4L2_TUNER_RADIO;
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v->capability = band_fm.capability;
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v->rangelow = tea->has_am ? bands[BAND_AM].rangelow : band_fm.rangelow;
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v->rangehigh = band_fm.rangehigh;
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v->rxsubchans = tea->stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
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v->audmode = (tea->val & TEA575X_BIT_MONO) ?
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V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO;
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v->signal = tea->tuned ? 0xffff : 0;
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return 0;
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}
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static int vidioc_s_tuner(struct file *file, void *priv,
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const struct v4l2_tuner *v)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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u32 orig_val = tea->val;
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if (v->index)
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return -EINVAL;
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tea->val &= ~TEA575X_BIT_MONO;
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if (v->audmode == V4L2_TUNER_MODE_MONO)
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tea->val |= TEA575X_BIT_MONO;
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/* Only apply changes if currently tuning FM */
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if (tea->band != BAND_AM && tea->val != orig_val)
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snd_tea575x_set_freq(tea);
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return 0;
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}
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static int vidioc_g_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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if (f->tuner != 0)
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return -EINVAL;
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f->type = V4L2_TUNER_RADIO;
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f->frequency = tea->freq;
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return 0;
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}
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static int vidioc_s_frequency(struct file *file, void *priv,
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const struct v4l2_frequency *f)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
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return -EINVAL;
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if (tea->has_am && f->frequency < (20000 * 16))
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tea->band = BAND_AM;
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else if (tea->tea5759)
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tea->band = BAND_FM_JAPAN;
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else
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tea->band = BAND_FM;
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tea->freq = clamp_t(u32, f->frequency, bands[tea->band].rangelow,
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bands[tea->band].rangehigh);
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snd_tea575x_set_freq(tea);
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return 0;
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}
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static int vidioc_s_hw_freq_seek(struct file *file, void *fh,
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const struct v4l2_hw_freq_seek *a)
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{
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struct snd_tea575x *tea = video_drvdata(file);
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unsigned long timeout;
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int i, spacing;
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if (tea->cannot_read_data)
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return -ENOTTY;
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if (a->tuner || a->wrap_around)
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return -EINVAL;
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if (file->f_flags & O_NONBLOCK)
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return -EWOULDBLOCK;
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if (a->rangelow || a->rangehigh) {
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for (i = 0; i < ARRAY_SIZE(bands); i++) {
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if ((i == BAND_FM && tea->tea5759) ||
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(i == BAND_FM_JAPAN && !tea->tea5759) ||
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(i == BAND_AM && !tea->has_am))
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continue;
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if (bands[i].rangelow == a->rangelow &&
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bands[i].rangehigh == a->rangehigh)
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break;
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}
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if (i == ARRAY_SIZE(bands))
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return -EINVAL; /* No matching band found */
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if (i != tea->band) {
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tea->band = i;
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tea->freq = clamp(tea->freq, bands[i].rangelow,
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bands[i].rangehigh);
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snd_tea575x_set_freq(tea);
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}
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}
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spacing = (tea->band == BAND_AM) ? 5 : 50; /* kHz */
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/* clear the frequency, HW will fill it in */
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tea->val &= ~TEA575X_BIT_FREQ_MASK;
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tea->val |= TEA575X_BIT_SEARCH;
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if (a->seek_upward)
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tea->val |= TEA575X_BIT_UPDOWN;
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else
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tea->val &= ~TEA575X_BIT_UPDOWN;
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snd_tea575x_write(tea, tea->val);
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timeout = jiffies + msecs_to_jiffies(10000);
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for (;;) {
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if (time_after(jiffies, timeout))
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break;
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if (schedule_timeout_interruptible(msecs_to_jiffies(10))) {
|
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/* some signal arrived, stop search */
|
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tea->val &= ~TEA575X_BIT_SEARCH;
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snd_tea575x_set_freq(tea);
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return -ERESTARTSYS;
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}
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if (!(snd_tea575x_read(tea) & TEA575X_BIT_SEARCH)) {
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u32 freq;
|
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|
||||
/* Found a frequency, wait until it can be read */
|
||||
for (i = 0; i < 100; i++) {
|
||||
msleep(10);
|
||||
freq = snd_tea575x_get_freq(tea);
|
||||
if (freq) /* available */
|
||||
break;
|
||||
}
|
||||
if (freq == 0) /* shouldn't happen */
|
||||
break;
|
||||
/*
|
||||
* if we moved by less than the spacing, or in the
|
||||
* wrong direction, continue seeking
|
||||
*/
|
||||
if (abs(tea->freq - freq) < 16 * spacing ||
|
||||
(a->seek_upward && freq < tea->freq) ||
|
||||
(!a->seek_upward && freq > tea->freq)) {
|
||||
snd_tea575x_write(tea, tea->val);
|
||||
continue;
|
||||
}
|
||||
tea->freq = freq;
|
||||
tea->val &= ~TEA575X_BIT_SEARCH;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
tea->val &= ~TEA575X_BIT_SEARCH;
|
||||
snd_tea575x_set_freq(tea);
|
||||
return -ENODATA;
|
||||
}
|
||||
|
||||
static int tea575x_s_ctrl(struct v4l2_ctrl *ctrl)
|
||||
{
|
||||
struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler);
|
||||
|
||||
switch (ctrl->id) {
|
||||
case V4L2_CID_AUDIO_MUTE:
|
||||
tea->mute = ctrl->val;
|
||||
snd_tea575x_set_freq(tea);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations tea575x_fops = {
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
.open = v4l2_fh_open,
|
||||
.release = v4l2_fh_release,
|
||||
.poll = v4l2_ctrl_poll,
|
||||
};
|
||||
|
||||
static const struct v4l2_ioctl_ops tea575x_ioctl_ops = {
|
||||
.vidioc_querycap = vidioc_querycap,
|
||||
.vidioc_g_tuner = vidioc_g_tuner,
|
||||
.vidioc_s_tuner = vidioc_s_tuner,
|
||||
.vidioc_g_frequency = vidioc_g_frequency,
|
||||
.vidioc_s_frequency = vidioc_s_frequency,
|
||||
.vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek,
|
||||
.vidioc_enum_freq_bands = vidioc_enum_freq_bands,
|
||||
.vidioc_log_status = v4l2_ctrl_log_status,
|
||||
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
||||
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
||||
};
|
||||
|
||||
static const struct video_device tea575x_radio = {
|
||||
.ioctl_ops = &tea575x_ioctl_ops,
|
||||
.release = video_device_release_empty,
|
||||
};
|
||||
|
||||
static const struct v4l2_ctrl_ops tea575x_ctrl_ops = {
|
||||
.s_ctrl = tea575x_s_ctrl,
|
||||
};
|
||||
|
||||
|
||||
int snd_tea575x_hw_init(struct snd_tea575x *tea)
|
||||
{
|
||||
tea->mute = true;
|
||||
|
||||
/* Not all devices can or know how to read the data back.
|
||||
Such devices can set cannot_read_data to true. */
|
||||
if (!tea->cannot_read_data) {
|
||||
snd_tea575x_write(tea, 0x55AA);
|
||||
if (snd_tea575x_read(tea) != 0x55AA)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
tea->val = TEA575X_BIT_BAND_FM | TEA575X_BIT_SEARCH_5_28;
|
||||
tea->freq = 90500 * 16; /* 90.5Mhz default */
|
||||
snd_tea575x_set_freq(tea);
|
||||
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(snd_tea575x_hw_init);
|
||||
|
||||
int snd_tea575x_init(struct snd_tea575x *tea, struct module *owner)
|
||||
{
|
||||
int retval = snd_tea575x_hw_init(tea);
|
||||
|
||||
if (retval)
|
||||
return retval;
|
||||
|
||||
tea->vd = tea575x_radio;
|
||||
video_set_drvdata(&tea->vd, tea);
|
||||
mutex_init(&tea->mutex);
|
||||
strlcpy(tea->vd.name, tea->v4l2_dev->name, sizeof(tea->vd.name));
|
||||
tea->vd.lock = &tea->mutex;
|
||||
tea->vd.v4l2_dev = tea->v4l2_dev;
|
||||
tea->fops = tea575x_fops;
|
||||
tea->fops.owner = owner;
|
||||
tea->vd.fops = &tea->fops;
|
||||
set_bit(V4L2_FL_USE_FH_PRIO, &tea->vd.flags);
|
||||
/* disable hw_freq_seek if we can't use it */
|
||||
if (tea->cannot_read_data)
|
||||
v4l2_disable_ioctl(&tea->vd, VIDIOC_S_HW_FREQ_SEEK);
|
||||
|
||||
if (!tea->cannot_mute) {
|
||||
tea->vd.ctrl_handler = &tea->ctrl_handler;
|
||||
v4l2_ctrl_handler_init(&tea->ctrl_handler, 1);
|
||||
v4l2_ctrl_new_std(&tea->ctrl_handler, &tea575x_ctrl_ops,
|
||||
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
|
||||
retval = tea->ctrl_handler.error;
|
||||
if (retval) {
|
||||
v4l2_err(tea->v4l2_dev, "can't initialize controls\n");
|
||||
v4l2_ctrl_handler_free(&tea->ctrl_handler);
|
||||
return retval;
|
||||
}
|
||||
|
||||
if (tea->ext_init) {
|
||||
retval = tea->ext_init(tea);
|
||||
if (retval) {
|
||||
v4l2_ctrl_handler_free(&tea->ctrl_handler);
|
||||
return retval;
|
||||
}
|
||||
}
|
||||
|
||||
v4l2_ctrl_handler_setup(&tea->ctrl_handler);
|
||||
}
|
||||
|
||||
retval = video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->radio_nr);
|
||||
if (retval) {
|
||||
v4l2_err(tea->v4l2_dev, "can't register video device!\n");
|
||||
v4l2_ctrl_handler_free(tea->vd.ctrl_handler);
|
||||
return retval;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void snd_tea575x_exit(struct snd_tea575x *tea)
|
||||
{
|
||||
video_unregister_device(&tea->vd);
|
||||
v4l2_ctrl_handler_free(tea->vd.ctrl_handler);
|
||||
}
|
||||
|
||||
static int __init alsa_tea575x_module_init(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit alsa_tea575x_module_exit(void)
|
||||
{
|
||||
}
|
||||
|
||||
module_init(alsa_tea575x_module_init)
|
||||
module_exit(alsa_tea575x_module_exit)
|
||||
|
||||
EXPORT_SYMBOL(snd_tea575x_init);
|
||||
EXPORT_SYMBOL(snd_tea575x_exit);
|
||||
EXPORT_SYMBOL(snd_tea575x_set_freq);
|
||||
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