Commit | Line | Data |
---|---|---|
3491a88e | 1 | /* SF16-FMR2 and SF16-FMD2 radio driver for Linux |
9e8fa0e6 | 2 | * Copyright (c) 2011 Ondrej Zary |
1da177e4 | 3 | * |
9e8fa0e6 OZ |
4 | * Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com |
5 | * but almost nothing remained here after conversion to generic TEA575x | |
6 | * implementation | |
1da177e4 LT |
7 | */ |
8 | ||
9e8fa0e6 | 9 | #include <linux/delay.h> |
1da177e4 LT |
10 | #include <linux/module.h> /* Modules */ |
11 | #include <linux/init.h> /* Initdata */ | |
d4ecc83b | 12 | #include <linux/slab.h> |
fb911ee8 | 13 | #include <linux/ioport.h> /* request_region */ |
c32a9d71 | 14 | #include <linux/io.h> /* outb, outb_p */ |
d4ecc83b | 15 | #include <linux/isa.h> |
3491a88e | 16 | #include <linux/pnp.h> |
9e8fa0e6 | 17 | #include <sound/tea575x-tuner.h> |
1da177e4 | 18 | |
9e8fa0e6 | 19 | MODULE_AUTHOR("Ondrej Zary"); |
3491a88e | 20 | MODULE_DESCRIPTION("MediaForte SF16-FMR2 and SF16-FMD2 FM radio card driver"); |
c32a9d71 HV |
21 | MODULE_LICENSE("GPL"); |
22 | ||
3491a88e OZ |
23 | /* these cards can only use two different ports (0x384 and 0x284) */ |
24 | #define FMR2_MAX 2 | |
25 | ||
26 | static int radio_nr[FMR2_MAX] = { [0 ... (FMR2_MAX - 1)] = -1 }; | |
27 | module_param_array(radio_nr, int, NULL, 0444); | |
28 | MODULE_PARM_DESC(radio_nr, "Radio device numbers"); | |
d4ecc83b | 29 | |
9e8fa0e6 | 30 | struct fmr2 { |
c32a9d71 | 31 | int io; |
d4ecc83b | 32 | struct v4l2_device v4l2_dev; |
9e8fa0e6 OZ |
33 | struct snd_tea575x tea; |
34 | struct v4l2_ctrl *volume; | |
35 | struct v4l2_ctrl *balance; | |
3491a88e | 36 | bool is_fmd2; |
1da177e4 LT |
37 | }; |
38 | ||
3491a88e OZ |
39 | static int num_fmr2_cards; |
40 | static struct fmr2 *fmr2_cards[FMR2_MAX]; | |
41 | static bool isa_registered; | |
42 | static bool pnp_registered; | |
43 | ||
44 | /* the port is hardwired on SF16-FMR2 */ | |
9e8fa0e6 | 45 | #define FMR2_PORT 0x384 |
1da177e4 | 46 | |
9e8fa0e6 OZ |
47 | /* TEA575x tuner pins */ |
48 | #define STR_DATA (1 << 0) | |
49 | #define STR_CLK (1 << 1) | |
50 | #define STR_WREN (1 << 2) | |
51 | #define STR_MOST (1 << 3) | |
52 | /* PT2254A/TC9154A volume control pins */ | |
53 | #define PT_ST (1 << 4) | |
54 | #define PT_CK (1 << 5) | |
55 | #define PT_DATA (1 << 6) | |
56 | /* volume control presence pin */ | |
57 | #define FMR2_HASVOL (1 << 7) | |
1da177e4 | 58 | |
9e8fa0e6 | 59 | static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) |
1da177e4 | 60 | { |
9e8fa0e6 OZ |
61 | struct fmr2 *fmr2 = tea->private_data; |
62 | u8 bits = 0; | |
1da177e4 | 63 | |
9e8fa0e6 OZ |
64 | bits |= (pins & TEA575X_DATA) ? STR_DATA : 0; |
65 | bits |= (pins & TEA575X_CLK) ? STR_CLK : 0; | |
66 | /* WRITE_ENABLE is inverted, DATA must be high during read */ | |
67 | bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA; | |
1da177e4 | 68 | |
9e8fa0e6 | 69 | outb(bits, fmr2->io); |
1da177e4 LT |
70 | } |
71 | ||
9e8fa0e6 | 72 | static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea) |
1da177e4 | 73 | { |
9e8fa0e6 OZ |
74 | struct fmr2 *fmr2 = tea->private_data; |
75 | u8 bits = inb(fmr2->io); | |
34ab962d | 76 | |
9e8fa0e6 OZ |
77 | return (bits & STR_DATA) ? TEA575X_DATA : 0 | |
78 | (bits & STR_MOST) ? TEA575X_MOST : 0; | |
34ab962d | 79 | } |
acda0e71 | 80 | |
9e8fa0e6 | 81 | static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output) |
34ab962d | 82 | { |
34ab962d | 83 | } |
acda0e71 | 84 | |
9e8fa0e6 OZ |
85 | static struct snd_tea575x_ops fmr2_tea_ops = { |
86 | .set_pins = fmr2_tea575x_set_pins, | |
87 | .get_pins = fmr2_tea575x_get_pins, | |
88 | .set_direction = fmr2_tea575x_set_direction, | |
89 | }; | |
acda0e71 | 90 | |
9e8fa0e6 OZ |
91 | /* TC9154A/PT2254A volume control */ |
92 | ||
93 | /* 18-bit shift register bit definitions */ | |
94 | #define TC9154A_ATT_MAJ_0DB (1 << 0) | |
95 | #define TC9154A_ATT_MAJ_10DB (1 << 1) | |
96 | #define TC9154A_ATT_MAJ_20DB (1 << 2) | |
97 | #define TC9154A_ATT_MAJ_30DB (1 << 3) | |
98 | #define TC9154A_ATT_MAJ_40DB (1 << 4) | |
99 | #define TC9154A_ATT_MAJ_50DB (1 << 5) | |
100 | #define TC9154A_ATT_MAJ_60DB (1 << 6) | |
101 | ||
102 | #define TC9154A_ATT_MIN_0DB (1 << 7) | |
103 | #define TC9154A_ATT_MIN_2DB (1 << 8) | |
104 | #define TC9154A_ATT_MIN_4DB (1 << 9) | |
105 | #define TC9154A_ATT_MIN_6DB (1 << 10) | |
106 | #define TC9154A_ATT_MIN_8DB (1 << 11) | |
107 | /* bit 12 is ignored */ | |
108 | #define TC9154A_CHANNEL_LEFT (1 << 13) | |
109 | #define TC9154A_CHANNEL_RIGHT (1 << 14) | |
110 | /* bits 15, 16, 17 must be 0 */ | |
111 | ||
112 | #define TC9154A_ATT_MAJ(x) (1 << x) | |
113 | #define TC9154A_ATT_MIN(x) (1 << (7 + x)) | |
114 | ||
115 | static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins) | |
116 | { | |
117 | if (!fmr2->tea.mute) | |
118 | pins |= STR_WREN; | |
119 | ||
120 | outb(pins, fmr2->io); | |
121 | } | |
122 | ||
123 | static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel) | |
124 | { | |
125 | int i; | |
126 | u32 reg; | |
127 | u8 bit; | |
128 | ||
129 | reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2); | |
130 | reg |= channel; | |
131 | /* write 18-bit shift register, LSB first */ | |
132 | for (i = 0; i < 18; i++) { | |
133 | bit = reg & (1 << i) ? PT_DATA : 0; | |
134 | tc9154a_set_pins(fmr2, bit); | |
135 | udelay(5); | |
136 | tc9154a_set_pins(fmr2, bit | PT_CK); | |
137 | udelay(5); | |
138 | tc9154a_set_pins(fmr2, bit); | |
34ab962d | 139 | } |
acda0e71 | 140 | |
9e8fa0e6 OZ |
141 | /* latch register data */ |
142 | udelay(5); | |
143 | tc9154a_set_pins(fmr2, PT_ST); | |
144 | udelay(5); | |
145 | tc9154a_set_pins(fmr2, 0); | |
34ab962d DL |
146 | } |
147 | ||
9e8fa0e6 | 148 | static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl) |
34ab962d | 149 | { |
9e8fa0e6 OZ |
150 | struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler); |
151 | struct fmr2 *fmr2 = tea->private_data; | |
152 | int volume, balance, left, right; | |
34ab962d DL |
153 | |
154 | switch (ctrl->id) { | |
34ab962d | 155 | case V4L2_CID_AUDIO_VOLUME: |
9e8fa0e6 OZ |
156 | volume = ctrl->val; |
157 | balance = fmr2->balance->cur.val; | |
34ab962d | 158 | break; |
9e8fa0e6 OZ |
159 | case V4L2_CID_AUDIO_BALANCE: |
160 | balance = ctrl->val; | |
161 | volume = fmr2->volume->cur.val; | |
34ab962d DL |
162 | break; |
163 | default: | |
164 | return -EINVAL; | |
165 | } | |
166 | ||
9e8fa0e6 OZ |
167 | left = right = volume; |
168 | if (balance < 0) | |
169 | right = max(0, right + balance); | |
170 | if (balance > 0) | |
171 | left = max(0, left - balance); | |
1da177e4 | 172 | |
9e8fa0e6 OZ |
173 | tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT); |
174 | tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT); | |
34ab962d | 175 | |
34ab962d | 176 | return 0; |
1da177e4 LT |
177 | } |
178 | ||
9e8fa0e6 OZ |
179 | static const struct v4l2_ctrl_ops fmr2_ctrl_ops = { |
180 | .s_ctrl = fmr2_s_ctrl, | |
181 | }; | |
182 | ||
183 | static int fmr2_tea_ext_init(struct snd_tea575x *tea) | |
c32a9d71 | 184 | { |
9e8fa0e6 | 185 | struct fmr2 *fmr2 = tea->private_data; |
1da177e4 | 186 | |
3491a88e OZ |
187 | /* FMR2 can have volume control, FMD2 can't (uses SB16 mixer) */ |
188 | if (!fmr2->is_fmd2 && inb(fmr2->io) & FMR2_HASVOL) { | |
9e8fa0e6 OZ |
189 | fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56); |
190 | fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0); | |
191 | if (tea->ctrl_handler.error) { | |
bdb2c41f | 192 | printk(KERN_ERR "radio-sf16fmr2: can't initialize controls\n"); |
9e8fa0e6 OZ |
193 | return tea->ctrl_handler.error; |
194 | } | |
195 | } | |
1da177e4 | 196 | |
9e8fa0e6 OZ |
197 | return 0; |
198 | } | |
1da177e4 | 199 | |
3491a88e OZ |
200 | static struct pnp_device_id fmr2_pnp_ids[] __devinitdata = { |
201 | { .id = "MFRad13" }, /* tuner subdevice of SF16-FMD2 */ | |
202 | { .id = "" } | |
203 | }; | |
204 | MODULE_DEVICE_TABLE(pnp, fmr2_pnp_ids); | |
205 | ||
206 | static int __devinit fmr2_probe(struct fmr2 *fmr2, struct device *pdev, int io) | |
1da177e4 | 207 | { |
3491a88e OZ |
208 | int err, i; |
209 | char *card_name = fmr2->is_fmd2 ? "SF16-FMD2" : "SF16-FMR2"; | |
d4ecc83b | 210 | |
3491a88e OZ |
211 | /* avoid errors if a card was already registered at given port */ |
212 | for (i = 0; i < num_fmr2_cards; i++) | |
213 | if (io == fmr2_cards[i]->io) | |
214 | return -EBUSY; | |
c32a9d71 | 215 | |
3491a88e OZ |
216 | strlcpy(fmr2->v4l2_dev.name, "radio-sf16fmr2", |
217 | sizeof(fmr2->v4l2_dev.name)), | |
218 | fmr2->io = io; | |
c32a9d71 | 219 | |
d4ecc83b | 220 | if (!request_region(fmr2->io, 2, fmr2->v4l2_dev.name)) { |
9e8fa0e6 | 221 | printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io); |
1da177e4 LT |
222 | return -EBUSY; |
223 | } | |
224 | ||
d4ecc83b HV |
225 | dev_set_drvdata(pdev, fmr2); |
226 | err = v4l2_device_register(pdev, &fmr2->v4l2_dev); | |
227 | if (err < 0) { | |
228 | v4l2_err(&fmr2->v4l2_dev, "Could not register v4l2_device\n"); | |
229 | release_region(fmr2->io, 2); | |
d4ecc83b HV |
230 | return err; |
231 | } | |
232 | fmr2->tea.v4l2_dev = &fmr2->v4l2_dev; | |
9e8fa0e6 | 233 | fmr2->tea.private_data = fmr2; |
3491a88e | 234 | fmr2->tea.radio_nr = radio_nr[num_fmr2_cards]; |
9e8fa0e6 OZ |
235 | fmr2->tea.ops = &fmr2_tea_ops; |
236 | fmr2->tea.ext_init = fmr2_tea_ext_init; | |
3491a88e OZ |
237 | strlcpy(fmr2->tea.card, card_name, sizeof(fmr2->tea.card)); |
238 | snprintf(fmr2->tea.bus_info, sizeof(fmr2->tea.bus_info), "%s:%s", | |
239 | fmr2->is_fmd2 ? "PnP" : "ISA", dev_name(pdev)); | |
1da177e4 | 240 | |
5daf53a6 | 241 | if (snd_tea575x_init(&fmr2->tea, THIS_MODULE)) { |
9e8fa0e6 | 242 | printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n"); |
c32a9d71 | 243 | release_region(fmr2->io, 2); |
9e8fa0e6 | 244 | return -ENODEV; |
c32a9d71 | 245 | } |
b2cb200f | 246 | |
3491a88e OZ |
247 | printk(KERN_INFO "radio-sf16fmr2: %s radio card at 0x%x.\n", |
248 | card_name, fmr2->io); | |
1da177e4 LT |
249 | return 0; |
250 | } | |
251 | ||
3491a88e OZ |
252 | static int __devinit fmr2_isa_match(struct device *pdev, unsigned int ndev) |
253 | { | |
254 | struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); | |
255 | if (!fmr2) | |
256 | return 0; | |
257 | ||
258 | if (fmr2_probe(fmr2, pdev, FMR2_PORT)) { | |
259 | kfree(fmr2); | |
260 | return 0; | |
261 | } | |
262 | dev_set_drvdata(pdev, fmr2); | |
263 | fmr2_cards[num_fmr2_cards++] = fmr2; | |
264 | ||
265 | return 1; | |
266 | } | |
267 | ||
268 | static int __devinit fmr2_pnp_probe(struct pnp_dev *pdev, | |
269 | const struct pnp_device_id *id) | |
1da177e4 | 270 | { |
3491a88e OZ |
271 | int ret; |
272 | struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); | |
273 | if (!fmr2) | |
274 | return -ENOMEM; | |
c32a9d71 | 275 | |
3491a88e OZ |
276 | fmr2->is_fmd2 = true; |
277 | ret = fmr2_probe(fmr2, &pdev->dev, pnp_port_start(pdev, 0)); | |
278 | if (ret) { | |
279 | kfree(fmr2); | |
280 | return ret; | |
281 | } | |
282 | pnp_set_drvdata(pdev, fmr2); | |
283 | fmr2_cards[num_fmr2_cards++] = fmr2; | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | static void __devexit fmr2_remove(struct fmr2 *fmr2) | |
289 | { | |
9e8fa0e6 | 290 | snd_tea575x_exit(&fmr2->tea); |
c32a9d71 | 291 | release_region(fmr2->io, 2); |
d4ecc83b HV |
292 | v4l2_device_unregister(&fmr2->v4l2_dev); |
293 | kfree(fmr2); | |
3491a88e OZ |
294 | } |
295 | ||
296 | static int __devexit fmr2_isa_remove(struct device *pdev, unsigned int ndev) | |
297 | { | |
298 | fmr2_remove(dev_get_drvdata(pdev)); | |
299 | dev_set_drvdata(pdev, NULL); | |
300 | ||
d4ecc83b HV |
301 | return 0; |
302 | } | |
303 | ||
3491a88e OZ |
304 | static void __devexit fmr2_pnp_remove(struct pnp_dev *pdev) |
305 | { | |
306 | fmr2_remove(pnp_get_drvdata(pdev)); | |
307 | pnp_set_drvdata(pdev, NULL); | |
308 | } | |
309 | ||
310 | struct isa_driver fmr2_isa_driver = { | |
311 | .match = fmr2_isa_match, | |
312 | .remove = __devexit_p(fmr2_isa_remove), | |
d4ecc83b HV |
313 | .driver = { |
314 | .name = "radio-sf16fmr2", | |
315 | }, | |
316 | }; | |
317 | ||
3491a88e OZ |
318 | struct pnp_driver fmr2_pnp_driver = { |
319 | .name = "radio-sf16fmr2", | |
320 | .id_table = fmr2_pnp_ids, | |
321 | .probe = fmr2_pnp_probe, | |
322 | .remove = __devexit_p(fmr2_pnp_remove), | |
323 | }; | |
324 | ||
d4ecc83b HV |
325 | static int __init fmr2_init(void) |
326 | { | |
3491a88e OZ |
327 | int ret; |
328 | ||
329 | ret = pnp_register_driver(&fmr2_pnp_driver); | |
330 | if (!ret) | |
331 | pnp_registered = true; | |
332 | ret = isa_register_driver(&fmr2_isa_driver, 1); | |
333 | if (!ret) | |
334 | isa_registered = true; | |
335 | ||
336 | return (pnp_registered || isa_registered) ? 0 : ret; | |
d4ecc83b HV |
337 | } |
338 | ||
339 | static void __exit fmr2_exit(void) | |
340 | { | |
3491a88e OZ |
341 | if (pnp_registered) |
342 | pnp_unregister_driver(&fmr2_pnp_driver); | |
343 | if (isa_registered) | |
344 | isa_unregister_driver(&fmr2_isa_driver); | |
1da177e4 LT |
345 | } |
346 | ||
347 | module_init(fmr2_init); | |
c32a9d71 | 348 | module_exit(fmr2_exit); |