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Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
3491a88e | 2 | /* SF16-FMR2 and SF16-FMD2 radio driver for Linux |
9e8fa0e6 | 3 | * Copyright (c) 2011 Ondrej Zary |
1da177e4 | 4 | * |
9e8fa0e6 OZ |
5 | * Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com |
6 | * but almost nothing remained here after conversion to generic TEA575x | |
7 | * implementation | |
1da177e4 LT |
8 | */ |
9 | ||
9e8fa0e6 | 10 | #include <linux/delay.h> |
6e6a8b5a | 11 | #include <linux/module.h> /* Modules */ |
1da177e4 | 12 | #include <linux/init.h> /* Initdata */ |
d4ecc83b | 13 | #include <linux/slab.h> |
fb911ee8 | 14 | #include <linux/ioport.h> /* request_region */ |
c32a9d71 | 15 | #include <linux/io.h> /* outb, outb_p */ |
d4ecc83b | 16 | #include <linux/isa.h> |
3491a88e | 17 | #include <linux/pnp.h> |
d647f0b7 | 18 | #include <media/drv-intf/tea575x.h> |
1da177e4 | 19 | |
9e8fa0e6 | 20 | MODULE_AUTHOR("Ondrej Zary"); |
3491a88e | 21 | MODULE_DESCRIPTION("MediaForte SF16-FMR2 and SF16-FMD2 FM radio card driver"); |
c32a9d71 HV |
22 | MODULE_LICENSE("GPL"); |
23 | ||
3491a88e OZ |
24 | /* these cards can only use two different ports (0x384 and 0x284) */ |
25 | #define FMR2_MAX 2 | |
26 | ||
27 | static int radio_nr[FMR2_MAX] = { [0 ... (FMR2_MAX - 1)] = -1 }; | |
28 | module_param_array(radio_nr, int, NULL, 0444); | |
29 | MODULE_PARM_DESC(radio_nr, "Radio device numbers"); | |
d4ecc83b | 30 | |
9e8fa0e6 | 31 | struct fmr2 { |
c32a9d71 | 32 | int io; |
d4ecc83b | 33 | struct v4l2_device v4l2_dev; |
9e8fa0e6 OZ |
34 | struct snd_tea575x tea; |
35 | struct v4l2_ctrl *volume; | |
36 | struct v4l2_ctrl *balance; | |
3491a88e | 37 | bool is_fmd2; |
1da177e4 LT |
38 | }; |
39 | ||
3491a88e OZ |
40 | static int num_fmr2_cards; |
41 | static struct fmr2 *fmr2_cards[FMR2_MAX]; | |
42 | static bool isa_registered; | |
43 | static bool pnp_registered; | |
44 | ||
45 | /* the port is hardwired on SF16-FMR2 */ | |
9e8fa0e6 | 46 | #define FMR2_PORT 0x384 |
1da177e4 | 47 | |
9e8fa0e6 OZ |
48 | /* TEA575x tuner pins */ |
49 | #define STR_DATA (1 << 0) | |
50 | #define STR_CLK (1 << 1) | |
51 | #define STR_WREN (1 << 2) | |
52 | #define STR_MOST (1 << 3) | |
53 | /* PT2254A/TC9154A volume control pins */ | |
54 | #define PT_ST (1 << 4) | |
55 | #define PT_CK (1 << 5) | |
56 | #define PT_DATA (1 << 6) | |
57 | /* volume control presence pin */ | |
58 | #define FMR2_HASVOL (1 << 7) | |
1da177e4 | 59 | |
9e8fa0e6 | 60 | static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) |
1da177e4 | 61 | { |
9e8fa0e6 OZ |
62 | struct fmr2 *fmr2 = tea->private_data; |
63 | u8 bits = 0; | |
1da177e4 | 64 | |
9e8fa0e6 OZ |
65 | bits |= (pins & TEA575X_DATA) ? STR_DATA : 0; |
66 | bits |= (pins & TEA575X_CLK) ? STR_CLK : 0; | |
67 | /* WRITE_ENABLE is inverted, DATA must be high during read */ | |
68 | bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA; | |
1da177e4 | 69 | |
9e8fa0e6 | 70 | outb(bits, fmr2->io); |
1da177e4 LT |
71 | } |
72 | ||
9e8fa0e6 | 73 | static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea) |
1da177e4 | 74 | { |
9e8fa0e6 OZ |
75 | struct fmr2 *fmr2 = tea->private_data; |
76 | u8 bits = inb(fmr2->io); | |
34ab962d | 77 | |
b5c2e0ab DC |
78 | return ((bits & STR_DATA) ? TEA575X_DATA : 0) | |
79 | ((bits & STR_MOST) ? TEA575X_MOST : 0); | |
34ab962d | 80 | } |
acda0e71 | 81 | |
9e8fa0e6 | 82 | static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output) |
34ab962d | 83 | { |
34ab962d | 84 | } |
acda0e71 | 85 | |
22dbec26 | 86 | static const struct snd_tea575x_ops fmr2_tea_ops = { |
9e8fa0e6 OZ |
87 | .set_pins = fmr2_tea575x_set_pins, |
88 | .get_pins = fmr2_tea575x_get_pins, | |
89 | .set_direction = fmr2_tea575x_set_direction, | |
90 | }; | |
acda0e71 | 91 | |
9e8fa0e6 OZ |
92 | /* TC9154A/PT2254A volume control */ |
93 | ||
94 | /* 18-bit shift register bit definitions */ | |
95 | #define TC9154A_ATT_MAJ_0DB (1 << 0) | |
96 | #define TC9154A_ATT_MAJ_10DB (1 << 1) | |
97 | #define TC9154A_ATT_MAJ_20DB (1 << 2) | |
98 | #define TC9154A_ATT_MAJ_30DB (1 << 3) | |
99 | #define TC9154A_ATT_MAJ_40DB (1 << 4) | |
100 | #define TC9154A_ATT_MAJ_50DB (1 << 5) | |
101 | #define TC9154A_ATT_MAJ_60DB (1 << 6) | |
102 | ||
103 | #define TC9154A_ATT_MIN_0DB (1 << 7) | |
104 | #define TC9154A_ATT_MIN_2DB (1 << 8) | |
105 | #define TC9154A_ATT_MIN_4DB (1 << 9) | |
106 | #define TC9154A_ATT_MIN_6DB (1 << 10) | |
107 | #define TC9154A_ATT_MIN_8DB (1 << 11) | |
108 | /* bit 12 is ignored */ | |
109 | #define TC9154A_CHANNEL_LEFT (1 << 13) | |
110 | #define TC9154A_CHANNEL_RIGHT (1 << 14) | |
111 | /* bits 15, 16, 17 must be 0 */ | |
112 | ||
113 | #define TC9154A_ATT_MAJ(x) (1 << x) | |
114 | #define TC9154A_ATT_MIN(x) (1 << (7 + x)) | |
115 | ||
116 | static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins) | |
117 | { | |
118 | if (!fmr2->tea.mute) | |
119 | pins |= STR_WREN; | |
120 | ||
121 | outb(pins, fmr2->io); | |
122 | } | |
123 | ||
124 | static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel) | |
125 | { | |
126 | int i; | |
127 | u32 reg; | |
128 | u8 bit; | |
129 | ||
130 | reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2); | |
131 | reg |= channel; | |
132 | /* write 18-bit shift register, LSB first */ | |
133 | for (i = 0; i < 18; i++) { | |
134 | bit = reg & (1 << i) ? PT_DATA : 0; | |
135 | tc9154a_set_pins(fmr2, bit); | |
136 | udelay(5); | |
137 | tc9154a_set_pins(fmr2, bit | PT_CK); | |
138 | udelay(5); | |
139 | tc9154a_set_pins(fmr2, bit); | |
34ab962d | 140 | } |
acda0e71 | 141 | |
9e8fa0e6 OZ |
142 | /* latch register data */ |
143 | udelay(5); | |
144 | tc9154a_set_pins(fmr2, PT_ST); | |
145 | udelay(5); | |
146 | tc9154a_set_pins(fmr2, 0); | |
34ab962d DL |
147 | } |
148 | ||
9e8fa0e6 | 149 | static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl) |
34ab962d | 150 | { |
9e8fa0e6 OZ |
151 | struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler); |
152 | struct fmr2 *fmr2 = tea->private_data; | |
153 | int volume, balance, left, right; | |
34ab962d DL |
154 | |
155 | switch (ctrl->id) { | |
34ab962d | 156 | case V4L2_CID_AUDIO_VOLUME: |
9e8fa0e6 OZ |
157 | volume = ctrl->val; |
158 | balance = fmr2->balance->cur.val; | |
34ab962d | 159 | break; |
9e8fa0e6 OZ |
160 | case V4L2_CID_AUDIO_BALANCE: |
161 | balance = ctrl->val; | |
162 | volume = fmr2->volume->cur.val; | |
34ab962d DL |
163 | break; |
164 | default: | |
165 | return -EINVAL; | |
166 | } | |
167 | ||
9e8fa0e6 OZ |
168 | left = right = volume; |
169 | if (balance < 0) | |
170 | right = max(0, right + balance); | |
171 | if (balance > 0) | |
172 | left = max(0, left - balance); | |
1da177e4 | 173 | |
9e8fa0e6 OZ |
174 | tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT); |
175 | tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT); | |
34ab962d | 176 | |
34ab962d | 177 | return 0; |
1da177e4 LT |
178 | } |
179 | ||
9e8fa0e6 OZ |
180 | static const struct v4l2_ctrl_ops fmr2_ctrl_ops = { |
181 | .s_ctrl = fmr2_s_ctrl, | |
182 | }; | |
183 | ||
184 | static int fmr2_tea_ext_init(struct snd_tea575x *tea) | |
c32a9d71 | 185 | { |
9e8fa0e6 | 186 | struct fmr2 *fmr2 = tea->private_data; |
1da177e4 | 187 | |
3491a88e OZ |
188 | /* FMR2 can have volume control, FMD2 can't (uses SB16 mixer) */ |
189 | if (!fmr2->is_fmd2 && inb(fmr2->io) & FMR2_HASVOL) { | |
9e8fa0e6 OZ |
190 | fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56); |
191 | fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0); | |
192 | if (tea->ctrl_handler.error) { | |
bdb2c41f | 193 | printk(KERN_ERR "radio-sf16fmr2: can't initialize controls\n"); |
9e8fa0e6 OZ |
194 | return tea->ctrl_handler.error; |
195 | } | |
196 | } | |
1da177e4 | 197 | |
9e8fa0e6 OZ |
198 | return 0; |
199 | } | |
1da177e4 | 200 | |
db4a8505 | 201 | static const struct pnp_device_id fmr2_pnp_ids[] = { |
3491a88e OZ |
202 | { .id = "MFRad13" }, /* tuner subdevice of SF16-FMD2 */ |
203 | { .id = "" } | |
204 | }; | |
205 | MODULE_DEVICE_TABLE(pnp, fmr2_pnp_ids); | |
206 | ||
4c62e976 | 207 | static int fmr2_probe(struct fmr2 *fmr2, struct device *pdev, int io) |
1da177e4 | 208 | { |
3491a88e OZ |
209 | int err, i; |
210 | char *card_name = fmr2->is_fmd2 ? "SF16-FMD2" : "SF16-FMR2"; | |
d4ecc83b | 211 | |
3491a88e OZ |
212 | /* avoid errors if a card was already registered at given port */ |
213 | for (i = 0; i < num_fmr2_cards; i++) | |
214 | if (io == fmr2_cards[i]->io) | |
215 | return -EBUSY; | |
c32a9d71 | 216 | |
c0decac1 MCC |
217 | strscpy(fmr2->v4l2_dev.name, "radio-sf16fmr2", |
218 | sizeof(fmr2->v4l2_dev.name)), | |
3491a88e | 219 | fmr2->io = io; |
c32a9d71 | 220 | |
d4ecc83b | 221 | if (!request_region(fmr2->io, 2, fmr2->v4l2_dev.name)) { |
9e8fa0e6 | 222 | printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io); |
1da177e4 LT |
223 | return -EBUSY; |
224 | } | |
225 | ||
d4ecc83b HV |
226 | dev_set_drvdata(pdev, fmr2); |
227 | err = v4l2_device_register(pdev, &fmr2->v4l2_dev); | |
228 | if (err < 0) { | |
229 | v4l2_err(&fmr2->v4l2_dev, "Could not register v4l2_device\n"); | |
230 | release_region(fmr2->io, 2); | |
d4ecc83b HV |
231 | return err; |
232 | } | |
233 | fmr2->tea.v4l2_dev = &fmr2->v4l2_dev; | |
9e8fa0e6 | 234 | fmr2->tea.private_data = fmr2; |
3491a88e | 235 | fmr2->tea.radio_nr = radio_nr[num_fmr2_cards]; |
9e8fa0e6 OZ |
236 | fmr2->tea.ops = &fmr2_tea_ops; |
237 | fmr2->tea.ext_init = fmr2_tea_ext_init; | |
c0decac1 | 238 | strscpy(fmr2->tea.card, card_name, sizeof(fmr2->tea.card)); |
3491a88e OZ |
239 | snprintf(fmr2->tea.bus_info, sizeof(fmr2->tea.bus_info), "%s:%s", |
240 | fmr2->is_fmd2 ? "PnP" : "ISA", dev_name(pdev)); | |
1da177e4 | 241 | |
5daf53a6 | 242 | if (snd_tea575x_init(&fmr2->tea, THIS_MODULE)) { |
9e8fa0e6 | 243 | printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n"); |
c32a9d71 | 244 | release_region(fmr2->io, 2); |
9e8fa0e6 | 245 | return -ENODEV; |
c32a9d71 | 246 | } |
b2cb200f | 247 | |
3491a88e OZ |
248 | printk(KERN_INFO "radio-sf16fmr2: %s radio card at 0x%x.\n", |
249 | card_name, fmr2->io); | |
1da177e4 LT |
250 | return 0; |
251 | } | |
252 | ||
4c62e976 | 253 | static int fmr2_isa_match(struct device *pdev, unsigned int ndev) |
3491a88e OZ |
254 | { |
255 | struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); | |
256 | if (!fmr2) | |
257 | return 0; | |
258 | ||
259 | if (fmr2_probe(fmr2, pdev, FMR2_PORT)) { | |
260 | kfree(fmr2); | |
261 | return 0; | |
262 | } | |
263 | dev_set_drvdata(pdev, fmr2); | |
264 | fmr2_cards[num_fmr2_cards++] = fmr2; | |
265 | ||
266 | return 1; | |
267 | } | |
268 | ||
4c62e976 | 269 | static int fmr2_pnp_probe(struct pnp_dev *pdev, 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 | ||
4c62e976 | 288 | static void fmr2_remove(struct fmr2 *fmr2) |
3491a88e | 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 | ||
4c62e976 | 296 | static int fmr2_isa_remove(struct device *pdev, unsigned int ndev) |
3491a88e OZ |
297 | { |
298 | fmr2_remove(dev_get_drvdata(pdev)); | |
3491a88e | 299 | |
d4ecc83b HV |
300 | return 0; |
301 | } | |
302 | ||
4c62e976 | 303 | static void fmr2_pnp_remove(struct pnp_dev *pdev) |
3491a88e OZ |
304 | { |
305 | fmr2_remove(pnp_get_drvdata(pdev)); | |
306 | pnp_set_drvdata(pdev, NULL); | |
307 | } | |
308 | ||
25fb62b6 | 309 | static struct isa_driver fmr2_isa_driver = { |
3491a88e | 310 | .match = fmr2_isa_match, |
4c62e976 | 311 | .remove = fmr2_isa_remove, |
d4ecc83b HV |
312 | .driver = { |
313 | .name = "radio-sf16fmr2", | |
314 | }, | |
315 | }; | |
316 | ||
25fb62b6 | 317 | static struct pnp_driver fmr2_pnp_driver = { |
3491a88e OZ |
318 | .name = "radio-sf16fmr2", |
319 | .id_table = fmr2_pnp_ids, | |
320 | .probe = fmr2_pnp_probe, | |
4c62e976 | 321 | .remove = fmr2_pnp_remove, |
3491a88e OZ |
322 | }; |
323 | ||
d4ecc83b HV |
324 | static int __init fmr2_init(void) |
325 | { | |
3491a88e OZ |
326 | int ret; |
327 | ||
328 | ret = pnp_register_driver(&fmr2_pnp_driver); | |
329 | if (!ret) | |
330 | pnp_registered = true; | |
331 | ret = isa_register_driver(&fmr2_isa_driver, 1); | |
332 | if (!ret) | |
333 | isa_registered = true; | |
334 | ||
335 | return (pnp_registered || isa_registered) ? 0 : ret; | |
d4ecc83b HV |
336 | } |
337 | ||
338 | static void __exit fmr2_exit(void) | |
339 | { | |
3491a88e OZ |
340 | if (pnp_registered) |
341 | pnp_unregister_driver(&fmr2_pnp_driver); | |
342 | if (isa_registered) | |
343 | isa_unregister_driver(&fmr2_isa_driver); | |
1da177e4 LT |
344 | } |
345 | ||
346 | module_init(fmr2_init); | |
c32a9d71 | 347 | module_exit(fmr2_exit); |