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[media] radio-sf16fmr2: convert to generic TEA575x interface
Convert radio-sf16fmr2 to use generic TEA575x implementation. Most of the driver code goes away as SF16-FMR2 is basically just a TEA5757 tuner connected to ISA bus. The card can optionally be equipped with PT2254A volume control (equivalent of TC9154AP) - the volume setting is completely reworked (with balance control added) and tested. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Ondrej Zary
Mauro Carvalho Chehab
parent
d294093010
commit
9e8fa0e644
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@ -1,441 +1,209 @@
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/* SF16FMR2 radio driver for Linux radio support
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* heavily based on fmi driver...
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* (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
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/* SF16-FMR2 radio driver for Linux
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* Copyright (c) 2011 Ondrej Zary
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*
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* Notes on the hardware
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*
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* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
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* No volume control - only mute/unmute - you have to use line volume
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*
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* For read stereo/mono you must wait 0.1 sec after set frequency and
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* card unmuted so I set frequency on unmute
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* Signal handling seem to work only on autoscanning (not implemented)
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*
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* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
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* Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
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* but almost nothing remained here after conversion to generic TEA575x
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* implementation
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*/
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#include <linux/delay.h>
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#include <linux/module.h> /* Modules */
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#include <linux/init.h> /* Initdata */
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#include <linux/ioport.h> /* request_region */
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#include <linux/delay.h> /* udelay */
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#include <linux/videodev2.h> /* kernel radio structs */
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#include <linux/mutex.h>
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#include <linux/version.h> /* for KERNEL_VERSION MACRO */
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#include <linux/io.h> /* outb, outb_p */
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <sound/tea575x-tuner.h>
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MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
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MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
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MODULE_AUTHOR("Ondrej Zary");
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MODULE_DESCRIPTION("MediaForte SF16-FMR2 FM radio card driver");
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MODULE_LICENSE("GPL");
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static int io = 0x384;
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static int radio_nr = -1;
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module_param(io, int, 0);
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MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
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module_param(radio_nr, int, 0);
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#define RADIO_VERSION KERNEL_VERSION(0,0,2)
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#define AUD_VOL_INDEX 1
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#undef DEBUG
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//#define DEBUG 1
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#ifdef DEBUG
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# define debug_print(s) printk s
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#else
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# define debug_print(s)
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#endif
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/* this should be static vars for module size */
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struct fmr2
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{
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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struct mutex lock;
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struct fmr2 {
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int io;
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int curvol; /* 0-15 */
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int mute;
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int stereo; /* card is producing stereo audio */
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unsigned long curfreq; /* freq in kHz */
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int card_type;
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struct snd_tea575x tea;
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struct v4l2_ctrl *volume;
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struct v4l2_ctrl *balance;
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};
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/* the port is hardwired so no need to support multiple cards */
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#define FMR2_PORT 0x384
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static struct fmr2 fmr2_card;
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/* hw precision is 12.5 kHz
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* It is only useful to give freq in interval of 200 (=0.0125Mhz),
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* other bits will be truncated
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*/
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#define RSF16_ENCODE(x) ((x) / 200 + 856)
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#define RSF16_MINFREQ (87 * 16000)
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#define RSF16_MAXFREQ (108 * 16000)
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/* TEA575x tuner pins */
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#define STR_DATA (1 << 0)
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#define STR_CLK (1 << 1)
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#define STR_WREN (1 << 2)
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#define STR_MOST (1 << 3)
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/* PT2254A/TC9154A volume control pins */
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#define PT_ST (1 << 4)
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#define PT_CK (1 << 5)
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#define PT_DATA (1 << 6)
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/* volume control presence pin */
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#define FMR2_HASVOL (1 << 7)
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static inline void wait(int n, int io)
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static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins)
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{
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for (; n; --n)
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inb(io);
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struct fmr2 *fmr2 = tea->private_data;
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u8 bits = 0;
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bits |= (pins & TEA575X_DATA) ? STR_DATA : 0;
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bits |= (pins & TEA575X_CLK) ? STR_CLK : 0;
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/* WRITE_ENABLE is inverted, DATA must be high during read */
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bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA;
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outb(bits, fmr2->io);
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}
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static void outbits(int bits, unsigned int data, int nWait, int io)
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static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea)
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{
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int bit;
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struct fmr2 *fmr2 = tea->private_data;
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u8 bits = inb(fmr2->io);
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for (; --bits >= 0;) {
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bit = (data >> bits) & 1;
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outb(bit, io);
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wait(nWait, io);
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outb(bit | 2, io);
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wait(nWait, io);
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outb(bit, io);
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wait(nWait, io);
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return (bits & STR_DATA) ? TEA575X_DATA : 0 |
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(bits & STR_MOST) ? TEA575X_MOST : 0;
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}
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static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output)
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{
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}
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static struct snd_tea575x_ops fmr2_tea_ops = {
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.set_pins = fmr2_tea575x_set_pins,
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.get_pins = fmr2_tea575x_get_pins,
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.set_direction = fmr2_tea575x_set_direction,
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};
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/* TC9154A/PT2254A volume control */
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/* 18-bit shift register bit definitions */
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#define TC9154A_ATT_MAJ_0DB (1 << 0)
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#define TC9154A_ATT_MAJ_10DB (1 << 1)
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#define TC9154A_ATT_MAJ_20DB (1 << 2)
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#define TC9154A_ATT_MAJ_30DB (1 << 3)
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#define TC9154A_ATT_MAJ_40DB (1 << 4)
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#define TC9154A_ATT_MAJ_50DB (1 << 5)
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#define TC9154A_ATT_MAJ_60DB (1 << 6)
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#define TC9154A_ATT_MIN_0DB (1 << 7)
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#define TC9154A_ATT_MIN_2DB (1 << 8)
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#define TC9154A_ATT_MIN_4DB (1 << 9)
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#define TC9154A_ATT_MIN_6DB (1 << 10)
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#define TC9154A_ATT_MIN_8DB (1 << 11)
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/* bit 12 is ignored */
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#define TC9154A_CHANNEL_LEFT (1 << 13)
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#define TC9154A_CHANNEL_RIGHT (1 << 14)
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/* bits 15, 16, 17 must be 0 */
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#define TC9154A_ATT_MAJ(x) (1 << x)
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#define TC9154A_ATT_MIN(x) (1 << (7 + x))
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static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins)
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{
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if (!fmr2->tea.mute)
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pins |= STR_WREN;
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outb(pins, fmr2->io);
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}
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static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel)
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{
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int i;
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u32 reg;
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u8 bit;
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reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2);
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reg |= channel;
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/* write 18-bit shift register, LSB first */
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for (i = 0; i < 18; i++) {
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bit = reg & (1 << i) ? PT_DATA : 0;
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tc9154a_set_pins(fmr2, bit);
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udelay(5);
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tc9154a_set_pins(fmr2, bit | PT_CK);
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udelay(5);
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tc9154a_set_pins(fmr2, bit);
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}
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/* latch register data */
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udelay(5);
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tc9154a_set_pins(fmr2, PT_ST);
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udelay(5);
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tc9154a_set_pins(fmr2, 0);
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}
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static inline void fmr2_mute(int io)
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static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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outb(0x00, io);
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wait(4, io);
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}
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static inline void fmr2_unmute(int io)
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{
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outb(0x04, io);
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wait(4, io);
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}
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static inline int fmr2_stereo_mode(int io)
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{
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int n = inb(io);
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outb(6, io);
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inb(io);
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n = ((n >> 3) & 1) ^ 1;
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debug_print((KERN_DEBUG "stereo: %d\n", n));
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return n;
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}
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static int fmr2_product_info(struct fmr2 *dev)
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{
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int n = inb(dev->io);
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n &= 0xC1;
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if (n == 0) {
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/* this should support volume set */
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dev->card_type = 12;
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return 0;
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}
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/* not volume (mine is 11) */
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dev->card_type = (n == 128) ? 11 : 0;
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return n;
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}
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static inline int fmr2_getsigstr(struct fmr2 *dev)
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{
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/* !!! works only if scanning freq */
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int res = 0xffff;
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outb(5, dev->io);
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wait(4, dev->io);
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if (!(inb(dev->io) & 1))
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res = 0;
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debug_print((KERN_DEBUG "signal: %d\n", res));
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return res;
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}
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/* set frequency and unmute card */
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static int fmr2_setfreq(struct fmr2 *dev)
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{
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unsigned long freq = dev->curfreq;
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fmr2_mute(dev->io);
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/* 0x42 for mono output
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* 0x102 forward scanning
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* 0x182 scansione avanti
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*/
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outbits(9, 0x2, 3, dev->io);
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outbits(16, RSF16_ENCODE(freq), 2, dev->io);
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fmr2_unmute(dev->io);
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/* wait 0.11 sec */
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msleep(110);
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/* NOTE if mute this stop radio
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you must set freq on unmute */
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dev->stereo = fmr2_stereo_mode(dev->io);
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return 0;
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}
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/* !!! not tested, in my card this doesn't work !!! */
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static int fmr2_setvolume(struct fmr2 *dev)
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{
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int vol[16] = { 0x021, 0x084, 0x090, 0x104,
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0x110, 0x204, 0x210, 0x402,
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0x404, 0x408, 0x410, 0x801,
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0x802, 0x804, 0x808, 0x810 };
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int i, a;
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int n = vol[dev->curvol & 0x0f];
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if (dev->card_type != 11)
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return 1;
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for (i = 12; --i >= 0; ) {
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a = ((n >> i) & 1) << 6; /* if (a==0) a = 0; else a = 0x40; */
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outb(a | 4, dev->io);
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wait(4, dev->io);
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outb(a | 0x24, dev->io);
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wait(4, dev->io);
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outb(a | 4, dev->io);
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wait(4, dev->io);
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}
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for (i = 6; --i >= 0; ) {
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a = ((0x18 >> i) & 1) << 6;
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outb(a | 4, dev->io);
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wait(4, dev->io);
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outb(a | 0x24, dev->io);
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wait(4, dev->io);
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outb(a | 4, dev->io);
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wait(4, dev->io);
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}
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wait(4, dev->io);
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outb(0x14, dev->io);
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return 0;
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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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strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
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strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
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strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
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v->version = RADIO_VERSION;
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v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
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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 fmr2 *fmr2 = video_drvdata(file);
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if (v->index > 0)
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return -EINVAL;
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strlcpy(v->name, "FM", sizeof(v->name));
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v->type = V4L2_TUNER_RADIO;
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v->rangelow = RSF16_MINFREQ;
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v->rangehigh = RSF16_MAXFREQ;
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v->rxsubchans = fmr2->stereo ? V4L2_TUNER_SUB_STEREO :
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V4L2_TUNER_SUB_MONO;
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v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW;
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v->audmode = V4L2_TUNER_MODE_STEREO;
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mutex_lock(&fmr2->lock);
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v->signal = fmr2_getsigstr(fmr2);
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mutex_unlock(&fmr2->lock);
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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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struct v4l2_tuner *v)
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{
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return v->index ? -EINVAL : 0;
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}
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static int vidioc_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct fmr2 *fmr2 = 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 (f->frequency < RSF16_MINFREQ ||
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f->frequency > RSF16_MAXFREQ)
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return -EINVAL;
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/* rounding in steps of 200 to match the freq
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that will be used */
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fmr2->curfreq = (f->frequency / 200) * 200;
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/* set card freq (if not muted) */
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if (fmr2->curvol && !fmr2->mute) {
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mutex_lock(&fmr2->lock);
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fmr2_setfreq(fmr2);
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mutex_unlock(&fmr2->lock);
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}
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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 fmr2 *fmr2 = 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 = fmr2->curfreq;
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return 0;
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}
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static int vidioc_queryctrl(struct file *file, void *priv,
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struct v4l2_queryctrl *qc)
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{
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struct fmr2 *fmr2 = video_drvdata(file);
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switch (qc->id) {
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case V4L2_CID_AUDIO_MUTE:
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return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
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case V4L2_CID_AUDIO_VOLUME:
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/* Only card_type == 11 implements volume */
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if (fmr2->card_type == 11)
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return v4l2_ctrl_query_fill(qc, 0, 15, 1, 0);
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return v4l2_ctrl_query_fill(qc, 0, 1, 1, 0);
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}
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return -EINVAL;
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}
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static int vidioc_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct fmr2 *fmr2 = video_drvdata(file);
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struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler);
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struct fmr2 *fmr2 = tea->private_data;
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int volume, balance, left, right;
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value = fmr2->mute;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = fmr2->curvol;
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return 0;
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}
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return -EINVAL;
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}
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static int vidioc_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct fmr2 *fmr2 = video_drvdata(file);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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fmr2->mute = ctrl->value;
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volume = ctrl->val;
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balance = fmr2->balance->cur.val;
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break;
|
||||
case V4L2_CID_AUDIO_VOLUME:
|
||||
fmr2->curvol = ctrl->value;
|
||||
case V4L2_CID_AUDIO_BALANCE:
|
||||
balance = ctrl->val;
|
||||
volume = fmr2->volume->cur.val;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
if (fmr2->curvol && !fmr2->mute)
|
||||
printk(KERN_DEBUG "unmute\n");
|
||||
else
|
||||
printk(KERN_DEBUG "mute\n");
|
||||
#endif
|
||||
left = right = volume;
|
||||
if (balance < 0)
|
||||
right = max(0, right + balance);
|
||||
if (balance > 0)
|
||||
left = max(0, left - balance);
|
||||
|
||||
tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT);
|
||||
tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT);
|
||||
|
||||
mutex_lock(&fmr2->lock);
|
||||
if (fmr2->curvol && !fmr2->mute) {
|
||||
fmr2_setvolume(fmr2);
|
||||
/* Set frequency and unmute card */
|
||||
fmr2_setfreq(fmr2);
|
||||
} else
|
||||
fmr2_mute(fmr2->io);
|
||||
mutex_unlock(&fmr2->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
|
||||
{
|
||||
*i = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
||||
{
|
||||
return i ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
a->index = 0;
|
||||
strlcpy(a->name, "Radio", sizeof(a->name));
|
||||
a->capability = V4L2_AUDCAP_STEREO;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
return a->index ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations fmr2_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
static const struct v4l2_ctrl_ops fmr2_ctrl_ops = {
|
||||
.s_ctrl = fmr2_s_ctrl,
|
||||
};
|
||||
|
||||
static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
|
||||
.vidioc_querycap = vidioc_querycap,
|
||||
.vidioc_g_tuner = vidioc_g_tuner,
|
||||
.vidioc_s_tuner = vidioc_s_tuner,
|
||||
.vidioc_g_audio = vidioc_g_audio,
|
||||
.vidioc_s_audio = vidioc_s_audio,
|
||||
.vidioc_g_input = vidioc_g_input,
|
||||
.vidioc_s_input = vidioc_s_input,
|
||||
.vidioc_g_frequency = vidioc_g_frequency,
|
||||
.vidioc_s_frequency = vidioc_s_frequency,
|
||||
.vidioc_queryctrl = vidioc_queryctrl,
|
||||
.vidioc_g_ctrl = vidioc_g_ctrl,
|
||||
.vidioc_s_ctrl = vidioc_s_ctrl,
|
||||
};
|
||||
static int fmr2_tea_ext_init(struct snd_tea575x *tea)
|
||||
{
|
||||
struct fmr2 *fmr2 = tea->private_data;
|
||||
|
||||
if (inb(fmr2->io) & FMR2_HASVOL) {
|
||||
fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56);
|
||||
fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0);
|
||||
if (tea->ctrl_handler.error) {
|
||||
printk(KERN_ERR "radio-sf16fmr2: can't initialize contrls\n");
|
||||
return tea->ctrl_handler.error;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init fmr2_init(void)
|
||||
{
|
||||
struct fmr2 *fmr2 = &fmr2_card;
|
||||
struct v4l2_device *v4l2_dev = &fmr2->v4l2_dev;
|
||||
int res;
|
||||
|
||||
strlcpy(v4l2_dev->name, "sf16fmr2", sizeof(v4l2_dev->name));
|
||||
fmr2->io = io;
|
||||
fmr2->stereo = 1;
|
||||
mutex_init(&fmr2->lock);
|
||||
fmr2->io = FMR2_PORT;
|
||||
|
||||
if (!request_region(fmr2->io, 2, "sf16fmr2")) {
|
||||
v4l2_err(v4l2_dev, "request_region failed!\n");
|
||||
if (!request_region(fmr2->io, 2, "SF16-FMR2")) {
|
||||
printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
res = v4l2_device_register(NULL, v4l2_dev);
|
||||
if (res < 0) {
|
||||
fmr2->tea.private_data = fmr2;
|
||||
fmr2->tea.ops = &fmr2_tea_ops;
|
||||
fmr2->tea.ext_init = fmr2_tea_ext_init;
|
||||
strlcpy(fmr2->tea.card, "SF16-FMR2", sizeof(fmr2->tea.card));
|
||||
strcpy(fmr2->tea.bus_info, "ISA");
|
||||
|
||||
if (snd_tea575x_init(&fmr2->tea)) {
|
||||
printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n");
|
||||
release_region(fmr2->io, 2);
|
||||
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
|
||||
return res;
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
strlcpy(fmr2->vdev.name, v4l2_dev->name, sizeof(fmr2->vdev.name));
|
||||
fmr2->vdev.v4l2_dev = v4l2_dev;
|
||||
fmr2->vdev.fops = &fmr2_fops;
|
||||
fmr2->vdev.ioctl_ops = &fmr2_ioctl_ops;
|
||||
fmr2->vdev.release = video_device_release_empty;
|
||||
video_set_drvdata(&fmr2->vdev, fmr2);
|
||||
|
||||
/* mute card - prevents noisy bootups */
|
||||
fmr2_mute(fmr2->io);
|
||||
fmr2_product_info(fmr2);
|
||||
|
||||
if (video_register_device(&fmr2->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
|
||||
v4l2_device_unregister(v4l2_dev);
|
||||
release_region(fmr2->io, 2);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
v4l2_info(v4l2_dev, "SF16FMR2 radio card driver at 0x%x.\n", fmr2->io);
|
||||
debug_print((KERN_DEBUG "card_type %d\n", fmr2->card_type));
|
||||
printk(KERN_INFO "radio-sf16fmr2: SF16-FMR2 radio card at 0x%x.\n", fmr2->io);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -443,22 +211,9 @@ static void __exit fmr2_exit(void)
|
|||
{
|
||||
struct fmr2 *fmr2 = &fmr2_card;
|
||||
|
||||
video_unregister_device(&fmr2->vdev);
|
||||
v4l2_device_unregister(&fmr2->v4l2_dev);
|
||||
snd_tea575x_exit(&fmr2->tea);
|
||||
release_region(fmr2->io, 2);
|
||||
}
|
||||
|
||||
module_init(fmr2_init);
|
||||
module_exit(fmr2_exit);
|
||||
|
||||
#ifndef MODULE
|
||||
|
||||
static int __init fmr2_setup_io(char *str)
|
||||
{
|
||||
get_option(&str, &io);
|
||||
return 1;
|
||||
}
|
||||
|
||||
__setup("sf16fmr2=", fmr2_setup_io);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -565,8 +565,8 @@ config SND_FM801_TEA575X_BOOL
|
|||
|
||||
config SND_TEA575X
|
||||
tristate
|
||||
depends on SND_FM801_TEA575X_BOOL || SND_ES1968_RADIO
|
||||
default SND_FM801 || SND_ES1968
|
||||
depends on SND_FM801_TEA575X_BOOL || SND_ES1968_RADIO || RADIO_SF16FMR2
|
||||
default SND_FM801 || SND_ES1968 || RADIO_SF16FMR2
|
||||
|
||||
source "sound/pci/hda/Kconfig"
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue