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Commit | Line | Data |
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9ea53b74 | 1 | /* |
11b64d31 | 2 | * driver for ENE KB3926 B/C/D/E/F CIR (pnp id: ENE0XXX) |
9ea53b74 ML |
3 | * |
4 | * Copyright (C) 2010 Maxim Levitsky <maximlevitsky@gmail.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License as | |
8 | * published by the Free Software Foundation; either version 2 of the | |
9 | * License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
19 | * USA | |
11b64d31 ML |
20 | * |
21 | * Special thanks to: | |
22 | * Sami R. <maesesami@gmail.com> for lot of help in debugging and therefore | |
23 | * bringing to life support for transmission & learning mode. | |
24 | * | |
25 | * Charlie Andrews <charliethepilot@googlemail.com> for lots of help in | |
26 | * bringing up the support of new firmware buffer that is popular | |
27 | * on latest notebooks | |
28 | * | |
29 | * ENE for partial device documentation | |
30 | * | |
9ea53b74 ML |
31 | */ |
32 | ||
7de3461c JP |
33 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
34 | ||
9ea53b74 ML |
35 | #include <linux/kernel.h> |
36 | #include <linux/module.h> | |
37 | #include <linux/pnp.h> | |
38 | #include <linux/io.h> | |
39 | #include <linux/interrupt.h> | |
40 | #include <linux/sched.h> | |
931e39a1 | 41 | #include <linux/slab.h> |
6bda9644 | 42 | #include <media/rc-core.h> |
931e39a1 | 43 | #include "ene_ir.h" |
9ea53b74 | 44 | |
11b64d31 | 45 | static int sample_period; |
c29bc4d7 | 46 | static bool learning_mode_force; |
9ea53b74 | 47 | static int debug; |
11b64d31 | 48 | static bool txsim; |
9ea53b74 | 49 | |
11b64d31 ML |
50 | static void ene_set_reg_addr(struct ene_device *dev, u16 reg) |
51 | { | |
52 | outb(reg >> 8, dev->hw_io + ENE_ADDR_HI); | |
53 | outb(reg & 0xFF, dev->hw_io + ENE_ADDR_LO); | |
54 | } | |
9ea53b74 ML |
55 | |
56 | /* read a hardware register */ | |
11b64d31 | 57 | static u8 ene_read_reg(struct ene_device *dev, u16 reg) |
9ea53b74 ML |
58 | { |
59 | u8 retval; | |
11b64d31 | 60 | ene_set_reg_addr(dev, reg); |
9ea53b74 | 61 | retval = inb(dev->hw_io + ENE_IO); |
11b64d31 | 62 | dbg_regs("reg %04x == %02x", reg, retval); |
9ea53b74 ML |
63 | return retval; |
64 | } | |
65 | ||
66 | /* write a hardware register */ | |
11b64d31 | 67 | static void ene_write_reg(struct ene_device *dev, u16 reg, u8 value) |
9ea53b74 | 68 | { |
11b64d31 ML |
69 | dbg_regs("reg %04x <- %02x", reg, value); |
70 | ene_set_reg_addr(dev, reg); | |
9ea53b74 | 71 | outb(value, dev->hw_io + ENE_IO); |
9ea53b74 ML |
72 | } |
73 | ||
11b64d31 ML |
74 | /* Set bits in hardware register */ |
75 | static void ene_set_reg_mask(struct ene_device *dev, u16 reg, u8 mask) | |
9ea53b74 | 76 | { |
11b64d31 ML |
77 | dbg_regs("reg %04x |= %02x", reg, mask); |
78 | ene_set_reg_addr(dev, reg); | |
79 | outb(inb(dev->hw_io + ENE_IO) | mask, dev->hw_io + ENE_IO); | |
80 | } | |
9ea53b74 | 81 | |
11b64d31 ML |
82 | /* Clear bits in hardware register */ |
83 | static void ene_clear_reg_mask(struct ene_device *dev, u16 reg, u8 mask) | |
84 | { | |
85 | dbg_regs("reg %04x &= ~%02x ", reg, mask); | |
86 | ene_set_reg_addr(dev, reg); | |
87 | outb(inb(dev->hw_io + ENE_IO) & ~mask, dev->hw_io + ENE_IO); | |
88 | } | |
9ea53b74 | 89 | |
11b64d31 ML |
90 | /* A helper to set/clear a bit in register according to boolean variable */ |
91 | static void ene_set_clear_reg_mask(struct ene_device *dev, u16 reg, u8 mask, | |
92 | bool set) | |
93 | { | |
94 | if (set) | |
95 | ene_set_reg_mask(dev, reg, mask); | |
96 | else | |
97 | ene_clear_reg_mask(dev, reg, mask); | |
9ea53b74 ML |
98 | } |
99 | ||
100 | /* detect hardware features */ | |
101 | static int ene_hw_detect(struct ene_device *dev) | |
102 | { | |
103 | u8 chip_major, chip_minor; | |
104 | u8 hw_revision, old_ver; | |
11b64d31 | 105 | u8 fw_reg2, fw_reg1; |
9ea53b74 | 106 | |
11b64d31 ML |
107 | ene_clear_reg_mask(dev, ENE_ECSTS, ENE_ECSTS_RSRVD); |
108 | chip_major = ene_read_reg(dev, ENE_ECVER_MAJOR); | |
109 | chip_minor = ene_read_reg(dev, ENE_ECVER_MINOR); | |
110 | ene_set_reg_mask(dev, ENE_ECSTS, ENE_ECSTS_RSRVD); | |
9ea53b74 | 111 | |
11b64d31 ML |
112 | hw_revision = ene_read_reg(dev, ENE_ECHV); |
113 | old_ver = ene_read_reg(dev, ENE_HW_VER_OLD); | |
9ea53b74 | 114 | |
11b64d31 ML |
115 | dev->pll_freq = (ene_read_reg(dev, ENE_PLLFRH) << 4) + |
116 | (ene_read_reg(dev, ENE_PLLFRL) >> 4); | |
931e39a1 | 117 | |
11b64d31 ML |
118 | if (sample_period != ENE_DEFAULT_SAMPLE_PERIOD) |
119 | dev->rx_period_adjust = | |
120 | dev->pll_freq == ENE_DEFAULT_PLL_FREQ ? 2 : 4; | |
931e39a1 | 121 | |
9ea53b74 | 122 | if (hw_revision == 0xFF) { |
7de3461c JP |
123 | pr_warn("device seems to be disabled\n"); |
124 | pr_warn("send a mail to lirc-list@lists.sourceforge.net\n"); | |
125 | pr_warn("please attach output of acpidump and dmidecode\n"); | |
9ea53b74 ML |
126 | return -ENODEV; |
127 | } | |
128 | ||
7de3461c JP |
129 | pr_notice("chip is 0x%02x%02x - kbver = 0x%02x, rev = 0x%02x\n", |
130 | chip_major, chip_minor, old_ver, hw_revision); | |
11b64d31 | 131 | |
7de3461c | 132 | pr_notice("PLL freq = %d\n", dev->pll_freq); |
11b64d31 | 133 | |
9ea53b74 | 134 | if (chip_major == 0x33) { |
7de3461c | 135 | pr_warn("chips 0x33xx aren't supported\n"); |
9ea53b74 ML |
136 | return -ENODEV; |
137 | } | |
138 | ||
139 | if (chip_major == 0x39 && chip_minor == 0x26 && hw_revision == 0xC0) { | |
140 | dev->hw_revision = ENE_HW_C; | |
7de3461c | 141 | pr_notice("KB3926C detected\n"); |
9ea53b74 ML |
142 | } else if (old_ver == 0x24 && hw_revision == 0xC0) { |
143 | dev->hw_revision = ENE_HW_B; | |
7de3461c | 144 | pr_notice("KB3926B detected\n"); |
9ea53b74 ML |
145 | } else { |
146 | dev->hw_revision = ENE_HW_D; | |
7de3461c | 147 | pr_notice("KB3926D or higher detected\n"); |
9ea53b74 ML |
148 | } |
149 | ||
9ea53b74 ML |
150 | /* detect features hardware supports */ |
151 | if (dev->hw_revision < ENE_HW_C) | |
152 | return 0; | |
153 | ||
11b64d31 ML |
154 | fw_reg1 = ene_read_reg(dev, ENE_FW1); |
155 | fw_reg2 = ene_read_reg(dev, ENE_FW2); | |
9ea53b74 | 156 | |
7de3461c | 157 | pr_notice("Firmware regs: %02x %02x\n", fw_reg1, fw_reg2); |
9ea53b74 | 158 | |
a06423c9 ML |
159 | dev->hw_use_gpio_0a = !!(fw_reg2 & ENE_FW2_GP0A); |
160 | dev->hw_learning_and_tx_capable = !!(fw_reg2 & ENE_FW2_LEARNING); | |
161 | dev->hw_extra_buffer = !!(fw_reg1 & ENE_FW1_HAS_EXTRA_BUF); | |
162 | ||
163 | if (dev->hw_learning_and_tx_capable) | |
164 | dev->hw_fan_input = !!(fw_reg2 & ENE_FW2_FAN_INPUT); | |
9ea53b74 | 165 | |
7de3461c | 166 | pr_notice("Hardware features:\n"); |
9ea53b74 ML |
167 | |
168 | if (dev->hw_learning_and_tx_capable) { | |
7de3461c JP |
169 | pr_notice("* Supports transmitting & learning mode\n"); |
170 | pr_notice(" This feature is rare and therefore,\n"); | |
171 | pr_notice(" you are welcome to test it,\n"); | |
172 | pr_notice(" and/or contact the author via:\n"); | |
173 | pr_notice(" lirc-list@lists.sourceforge.net\n"); | |
174 | pr_notice(" or maximlevitsky@gmail.com\n"); | |
11b64d31 | 175 | |
7de3461c JP |
176 | pr_notice("* Uses GPIO %s for IR raw input\n", |
177 | dev->hw_use_gpio_0a ? "40" : "0A"); | |
11b64d31 ML |
178 | |
179 | if (dev->hw_fan_input) | |
7de3461c | 180 | pr_notice("* Uses unused fan feedback input as source of demodulated IR data\n"); |
9ea53b74 | 181 | } |
11b64d31 ML |
182 | |
183 | if (!dev->hw_fan_input) | |
7de3461c JP |
184 | pr_notice("* Uses GPIO %s for IR demodulated input\n", |
185 | dev->hw_use_gpio_0a ? "0A" : "40"); | |
11b64d31 ML |
186 | |
187 | if (dev->hw_extra_buffer) | |
7de3461c | 188 | pr_notice("* Uses new style input buffer\n"); |
9ea53b74 ML |
189 | return 0; |
190 | } | |
191 | ||
c29bc4d7 ML |
192 | /* Read properities of hw sample buffer */ |
193 | static void ene_rx_setup_hw_buffer(struct ene_device *dev) | |
194 | { | |
195 | u16 tmp; | |
196 | ||
197 | ene_rx_read_hw_pointer(dev); | |
198 | dev->r_pointer = dev->w_pointer; | |
199 | ||
200 | if (!dev->hw_extra_buffer) { | |
201 | dev->buffer_len = ENE_FW_PACKET_SIZE * 2; | |
202 | return; | |
203 | } | |
204 | ||
205 | tmp = ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER); | |
206 | tmp |= ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER+1) << 8; | |
207 | dev->extra_buf1_address = tmp; | |
208 | ||
209 | dev->extra_buf1_len = ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER + 2); | |
210 | ||
211 | tmp = ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER + 3); | |
212 | tmp |= ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER + 4) << 8; | |
213 | dev->extra_buf2_address = tmp; | |
214 | ||
215 | dev->extra_buf2_len = ene_read_reg(dev, ENE_FW_SAMPLE_BUFFER + 5); | |
216 | ||
217 | dev->buffer_len = dev->extra_buf1_len + dev->extra_buf2_len + 8; | |
218 | ||
7de3461c JP |
219 | pr_notice("Hardware uses 2 extended buffers:\n"); |
220 | pr_notice(" 0x%04x - len : %d\n", | |
221 | dev->extra_buf1_address, dev->extra_buf1_len); | |
222 | pr_notice(" 0x%04x - len : %d\n", | |
223 | dev->extra_buf2_address, dev->extra_buf2_len); | |
c29bc4d7 | 224 | |
7de3461c | 225 | pr_notice("Total buffer len = %d\n", dev->buffer_len); |
c29bc4d7 ML |
226 | |
227 | if (dev->buffer_len > 64 || dev->buffer_len < 16) | |
228 | goto error; | |
229 | ||
230 | if (dev->extra_buf1_address > 0xFBFC || | |
231 | dev->extra_buf1_address < 0xEC00) | |
232 | goto error; | |
233 | ||
234 | if (dev->extra_buf2_address > 0xFBFC || | |
235 | dev->extra_buf2_address < 0xEC00) | |
236 | goto error; | |
237 | ||
238 | if (dev->r_pointer > dev->buffer_len) | |
239 | goto error; | |
240 | ||
241 | ene_set_reg_mask(dev, ENE_FW1, ENE_FW1_EXTRA_BUF_HND); | |
242 | return; | |
243 | error: | |
7de3461c | 244 | pr_warn("Error validating extra buffers, device probably won't work\n"); |
c29bc4d7 ML |
245 | dev->hw_extra_buffer = false; |
246 | ene_clear_reg_mask(dev, ENE_FW1, ENE_FW1_EXTRA_BUF_HND); | |
247 | } | |
248 | ||
249 | ||
250 | /* Restore the pointers to extra buffers - to make module reload work*/ | |
251 | static void ene_rx_restore_hw_buffer(struct ene_device *dev) | |
252 | { | |
253 | if (!dev->hw_extra_buffer) | |
254 | return; | |
255 | ||
256 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 0, | |
257 | dev->extra_buf1_address & 0xFF); | |
258 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 1, | |
259 | dev->extra_buf1_address >> 8); | |
260 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 2, dev->extra_buf1_len); | |
261 | ||
262 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 3, | |
263 | dev->extra_buf2_address & 0xFF); | |
264 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 4, | |
265 | dev->extra_buf2_address >> 8); | |
266 | ene_write_reg(dev, ENE_FW_SAMPLE_BUFFER + 5, | |
267 | dev->extra_buf2_len); | |
268 | ene_clear_reg_mask(dev, ENE_FW1, ENE_FW1_EXTRA_BUF_HND); | |
269 | } | |
270 | ||
271 | /* Read hardware write pointer */ | |
272 | static void ene_rx_read_hw_pointer(struct ene_device *dev) | |
273 | { | |
274 | if (dev->hw_extra_buffer) | |
275 | dev->w_pointer = ene_read_reg(dev, ENE_FW_RX_POINTER); | |
276 | else | |
277 | dev->w_pointer = ene_read_reg(dev, ENE_FW2) | |
278 | & ENE_FW2_BUF_WPTR ? 0 : ENE_FW_PACKET_SIZE; | |
279 | ||
280 | dbg_verbose("RB: HW write pointer: %02x, driver read pointer: %02x", | |
281 | dev->w_pointer, dev->r_pointer); | |
282 | } | |
283 | ||
284 | /* Gets address of next sample from HW ring buffer */ | |
285 | static int ene_rx_get_sample_reg(struct ene_device *dev) | |
286 | { | |
287 | int r_pointer; | |
288 | ||
289 | if (dev->r_pointer == dev->w_pointer) { | |
290 | dbg_verbose("RB: hit end, try update w_pointer"); | |
291 | ene_rx_read_hw_pointer(dev); | |
292 | } | |
293 | ||
294 | if (dev->r_pointer == dev->w_pointer) { | |
295 | dbg_verbose("RB: end of data at %d", dev->r_pointer); | |
296 | return 0; | |
297 | } | |
298 | ||
299 | dbg_verbose("RB: reading at offset %d", dev->r_pointer); | |
300 | r_pointer = dev->r_pointer; | |
301 | ||
302 | dev->r_pointer++; | |
303 | if (dev->r_pointer == dev->buffer_len) | |
304 | dev->r_pointer = 0; | |
305 | ||
306 | dbg_verbose("RB: next read will be from offset %d", dev->r_pointer); | |
307 | ||
308 | if (r_pointer < 8) { | |
309 | dbg_verbose("RB: read at main buffer at %d", r_pointer); | |
310 | return ENE_FW_SAMPLE_BUFFER + r_pointer; | |
311 | } | |
312 | ||
313 | r_pointer -= 8; | |
314 | ||
315 | if (r_pointer < dev->extra_buf1_len) { | |
316 | dbg_verbose("RB: read at 1st extra buffer at %d", r_pointer); | |
317 | return dev->extra_buf1_address + r_pointer; | |
318 | } | |
319 | ||
320 | r_pointer -= dev->extra_buf1_len; | |
321 | ||
322 | if (r_pointer < dev->extra_buf2_len) { | |
323 | dbg_verbose("RB: read at 2nd extra buffer at %d", r_pointer); | |
324 | return dev->extra_buf2_address + r_pointer; | |
325 | } | |
326 | ||
90802ed9 | 327 | dbg("attempt to read beyond ring buffer end"); |
c29bc4d7 ML |
328 | return 0; |
329 | } | |
330 | ||
11b64d31 ML |
331 | /* Sense current received carrier */ |
332 | void ene_rx_sense_carrier(struct ene_device *dev) | |
9ea53b74 | 333 | { |
e1b1ddbe ML |
334 | DEFINE_IR_RAW_EVENT(ev); |
335 | ||
336 | int carrier, duty_cycle; | |
11b64d31 ML |
337 | int period = ene_read_reg(dev, ENE_CIRCAR_PRD); |
338 | int hperiod = ene_read_reg(dev, ENE_CIRCAR_HPRD); | |
11b64d31 ML |
339 | |
340 | if (!(period & ENE_CIRCAR_PRD_VALID)) | |
341 | return; | |
342 | ||
343 | period &= ~ENE_CIRCAR_PRD_VALID; | |
344 | ||
345 | if (!period) | |
346 | return; | |
347 | ||
348 | dbg("RX: hardware carrier period = %02x", period); | |
349 | dbg("RX: hardware carrier pulse period = %02x", hperiod); | |
350 | ||
11b64d31 ML |
351 | carrier = 2000000 / period; |
352 | duty_cycle = (hperiod * 100) / period; | |
353 | dbg("RX: sensed carrier = %d Hz, duty cycle %d%%", | |
e1b1ddbe ML |
354 | carrier, duty_cycle); |
355 | if (dev->carrier_detect_enabled) { | |
356 | ev.carrier_report = true; | |
357 | ev.carrier = carrier; | |
358 | ev.duty_cycle = duty_cycle; | |
d8b4b582 | 359 | ir_raw_event_store(dev->rdev, &ev); |
e1b1ddbe | 360 | } |
9ea53b74 ML |
361 | } |
362 | ||
11b64d31 | 363 | /* this enables/disables the CIR RX engine */ |
c29bc4d7 | 364 | static void ene_rx_enable_cir_engine(struct ene_device *dev, bool enable) |
9ea53b74 | 365 | { |
11b64d31 ML |
366 | ene_set_clear_reg_mask(dev, ENE_CIRCFG, |
367 | ENE_CIRCFG_RX_EN | ENE_CIRCFG_RX_IRQ, enable); | |
9ea53b74 ML |
368 | } |
369 | ||
11b64d31 | 370 | /* this selects input for CIR engine. Ether GPIO 0A or GPIO40*/ |
c29bc4d7 | 371 | static void ene_rx_select_input(struct ene_device *dev, bool gpio_0a) |
9ea53b74 | 372 | { |
11b64d31 | 373 | ene_set_clear_reg_mask(dev, ENE_CIRCFG2, ENE_CIRCFG2_GPIO0A, gpio_0a); |
9ea53b74 ML |
374 | } |
375 | ||
11b64d31 ML |
376 | /* |
377 | * this enables alternative input via fan tachometer sensor and bypasses | |
378 | * the hw CIR engine | |
379 | */ | |
c29bc4d7 | 380 | static void ene_rx_enable_fan_input(struct ene_device *dev, bool enable) |
9ea53b74 | 381 | { |
11b64d31 ML |
382 | if (!dev->hw_fan_input) |
383 | return; | |
9ea53b74 | 384 | |
11b64d31 ML |
385 | if (!enable) |
386 | ene_write_reg(dev, ENE_FAN_AS_IN1, 0); | |
387 | else { | |
388 | ene_write_reg(dev, ENE_FAN_AS_IN1, ENE_FAN_AS_IN1_EN); | |
389 | ene_write_reg(dev, ENE_FAN_AS_IN2, ENE_FAN_AS_IN2_EN); | |
390 | } | |
9ea53b74 ML |
391 | } |
392 | ||
11b64d31 ML |
393 | /* setup the receiver for RX*/ |
394 | static void ene_rx_setup(struct ene_device *dev) | |
9ea53b74 | 395 | { |
c29bc4d7 | 396 | bool learning_mode = dev->learning_mode_enabled || |
11b64d31 ML |
397 | dev->carrier_detect_enabled; |
398 | int sample_period_adjust = 0; | |
9ea53b74 | 399 | |
c29bc4d7 ML |
400 | dbg("RX: setup receiver, learning mode = %d", learning_mode); |
401 | ||
402 | ||
a06423c9 ML |
403 | /* This selects RLC input and clears CFG2 settings */ |
404 | ene_write_reg(dev, ENE_CIRCFG2, 0x00); | |
9ea53b74 | 405 | |
11b64d31 ML |
406 | /* set sample period*/ |
407 | if (sample_period == ENE_DEFAULT_SAMPLE_PERIOD) | |
408 | sample_period_adjust = | |
409 | dev->pll_freq == ENE_DEFAULT_PLL_FREQ ? 1 : 2; | |
9ea53b74 | 410 | |
11b64d31 ML |
411 | ene_write_reg(dev, ENE_CIRRLC_CFG, |
412 | (sample_period + sample_period_adjust) | | |
413 | ENE_CIRRLC_CFG_OVERFLOW); | |
414 | /* revB doesn't support inputs */ | |
415 | if (dev->hw_revision < ENE_HW_C) | |
416 | goto select_timeout; | |
9ea53b74 | 417 | |
a06423c9 ML |
418 | if (learning_mode) { |
419 | ||
420 | WARN_ON(!dev->hw_learning_and_tx_capable); | |
9ea53b74 | 421 | |
11b64d31 ML |
422 | /* Enable the opposite of the normal input |
423 | That means that if GPIO40 is normally used, use GPIO0A | |
424 | and vice versa. | |
425 | This input will carry non demodulated | |
426 | signal, and we will tell the hw to demodulate it itself */ | |
c29bc4d7 | 427 | ene_rx_select_input(dev, !dev->hw_use_gpio_0a); |
11b64d31 | 428 | dev->rx_fan_input_inuse = false; |
9ea53b74 | 429 | |
11b64d31 ML |
430 | /* Enable carrier demodulation */ |
431 | ene_set_reg_mask(dev, ENE_CIRCFG, ENE_CIRCFG_CARR_DEMOD); | |
9ea53b74 | 432 | |
11b64d31 | 433 | /* Enable carrier detection */ |
a06423c9 | 434 | ene_write_reg(dev, ENE_CIRCAR_PULS, 0x63); |
11b64d31 ML |
435 | ene_set_clear_reg_mask(dev, ENE_CIRCFG2, ENE_CIRCFG2_CARR_DETECT, |
436 | dev->carrier_detect_enabled || debug); | |
9ea53b74 | 437 | } else { |
11b64d31 ML |
438 | if (dev->hw_fan_input) |
439 | dev->rx_fan_input_inuse = true; | |
440 | else | |
c29bc4d7 | 441 | ene_rx_select_input(dev, dev->hw_use_gpio_0a); |
11b64d31 ML |
442 | |
443 | /* Disable carrier detection & demodulation */ | |
444 | ene_clear_reg_mask(dev, ENE_CIRCFG, ENE_CIRCFG_CARR_DEMOD); | |
445 | ene_clear_reg_mask(dev, ENE_CIRCFG2, ENE_CIRCFG2_CARR_DETECT); | |
9ea53b74 ML |
446 | } |
447 | ||
11b64d31 | 448 | select_timeout: |
931e39a1 | 449 | if (dev->rx_fan_input_inuse) { |
5aad7242 | 450 | dev->rdev->rx_resolution = US_TO_NS(ENE_FW_SAMPLE_PERIOD_FAN); |
931e39a1 | 451 | |
11b64d31 ML |
452 | /* Fan input doesn't support timeouts, it just ends the |
453 | input with a maximum sample */ | |
d8b4b582 | 454 | dev->rdev->min_timeout = dev->rdev->max_timeout = |
5aad7242 | 455 | US_TO_NS(ENE_FW_SMPL_BUF_FAN_MSK * |
11b64d31 | 456 | ENE_FW_SAMPLE_PERIOD_FAN); |
931e39a1 | 457 | } else { |
5aad7242 | 458 | dev->rdev->rx_resolution = US_TO_NS(sample_period); |
11b64d31 ML |
459 | |
460 | /* Theoreticly timeout is unlimited, but we cap it | |
461 | * because it was seen that on one device, it | |
462 | * would stop sending spaces after around 250 msec. | |
463 | * Besides, this is close to 2^32 anyway and timeout is u32. | |
464 | */ | |
5aad7242 JW |
465 | dev->rdev->min_timeout = US_TO_NS(127 * sample_period); |
466 | dev->rdev->max_timeout = US_TO_NS(200000); | |
931e39a1 | 467 | } |
11b64d31 ML |
468 | |
469 | if (dev->hw_learning_and_tx_capable) | |
5aad7242 | 470 | dev->rdev->tx_resolution = US_TO_NS(sample_period); |
11b64d31 | 471 | |
d8b4b582 DH |
472 | if (dev->rdev->timeout > dev->rdev->max_timeout) |
473 | dev->rdev->timeout = dev->rdev->max_timeout; | |
474 | if (dev->rdev->timeout < dev->rdev->min_timeout) | |
475 | dev->rdev->timeout = dev->rdev->min_timeout; | |
9ea53b74 ML |
476 | } |
477 | ||
478 | /* Enable the device for receive */ | |
479 | static void ene_rx_enable(struct ene_device *dev) | |
480 | { | |
481 | u8 reg_value; | |
482 | ||
11b64d31 | 483 | /* Enable system interrupt */ |
9ea53b74 | 484 | if (dev->hw_revision < ENE_HW_C) { |
11b64d31 ML |
485 | ene_write_reg(dev, ENEB_IRQ, dev->irq << 1); |
486 | ene_write_reg(dev, ENEB_IRQ_UNK1, 0x01); | |
9ea53b74 | 487 | } else { |
11b64d31 ML |
488 | reg_value = ene_read_reg(dev, ENE_IRQ) & 0xF0; |
489 | reg_value |= ENE_IRQ_UNK_EN; | |
490 | reg_value &= ~ENE_IRQ_STATUS; | |
491 | reg_value |= (dev->irq & ENE_IRQ_MASK); | |
492 | ene_write_reg(dev, ENE_IRQ, reg_value); | |
9ea53b74 ML |
493 | } |
494 | ||
a06423c9 | 495 | /* Enable inputs */ |
c29bc4d7 ML |
496 | ene_rx_enable_fan_input(dev, dev->rx_fan_input_inuse); |
497 | ene_rx_enable_cir_engine(dev, !dev->rx_fan_input_inuse); | |
9ea53b74 ML |
498 | |
499 | /* ack any pending irqs - just in case */ | |
500 | ene_irq_status(dev); | |
501 | ||
9ea53b74 | 502 | /* enable firmware bits */ |
11b64d31 | 503 | ene_set_reg_mask(dev, ENE_FW1, ENE_FW1_ENABLE | ENE_FW1_IRQ); |
931e39a1 ML |
504 | |
505 | /* enter idle mode */ | |
d8b4b582 | 506 | ir_raw_event_set_idle(dev->rdev, true); |
11b64d31 | 507 | dev->rx_enabled = true; |
9ea53b74 ML |
508 | } |
509 | ||
931e39a1 | 510 | /* Disable the device receiver */ |
9ea53b74 ML |
511 | static void ene_rx_disable(struct ene_device *dev) |
512 | { | |
513 | /* disable inputs */ | |
c29bc4d7 ML |
514 | ene_rx_enable_cir_engine(dev, false); |
515 | ene_rx_enable_fan_input(dev, false); | |
9ea53b74 ML |
516 | |
517 | /* disable hardware IRQ and firmware flag */ | |
11b64d31 | 518 | ene_clear_reg_mask(dev, ENE_FW1, ENE_FW1_ENABLE | ENE_FW1_IRQ); |
9ea53b74 | 519 | |
d8b4b582 | 520 | ir_raw_event_set_idle(dev->rdev, true); |
11b64d31 | 521 | dev->rx_enabled = false; |
9ea53b74 ML |
522 | } |
523 | ||
25985edc | 524 | /* This resets the receiver. Useful to stop stream of spaces at end of |
c29bc4d7 ML |
525 | * transmission |
526 | */ | |
527 | static void ene_rx_reset(struct ene_device *dev) | |
528 | { | |
529 | ene_clear_reg_mask(dev, ENE_CIRCFG, ENE_CIRCFG_RX_EN); | |
530 | ene_set_reg_mask(dev, ENE_CIRCFG, ENE_CIRCFG_RX_EN); | |
531 | } | |
532 | ||
533 | /* Set up the TX carrier frequency and duty cycle */ | |
534 | static void ene_tx_set_carrier(struct ene_device *dev) | |
535 | { | |
536 | u8 tx_puls_width; | |
537 | unsigned long flags; | |
538 | ||
539 | spin_lock_irqsave(&dev->hw_lock, flags); | |
540 | ||
541 | ene_set_clear_reg_mask(dev, ENE_CIRCFG, | |
542 | ENE_CIRCFG_TX_CARR, dev->tx_period > 0); | |
543 | ||
544 | if (!dev->tx_period) | |
545 | goto unlock; | |
546 | ||
547 | BUG_ON(dev->tx_duty_cycle >= 100 || dev->tx_duty_cycle <= 0); | |
548 | ||
549 | tx_puls_width = dev->tx_period / (100 / dev->tx_duty_cycle); | |
550 | ||
551 | if (!tx_puls_width) | |
552 | tx_puls_width = 1; | |
553 | ||
554 | dbg("TX: pulse distance = %d * 500 ns", dev->tx_period); | |
555 | dbg("TX: pulse width = %d * 500 ns", tx_puls_width); | |
556 | ||
557 | ene_write_reg(dev, ENE_CIRMOD_PRD, dev->tx_period | ENE_CIRMOD_PRD_POL); | |
558 | ene_write_reg(dev, ENE_CIRMOD_HPRD, tx_puls_width); | |
559 | unlock: | |
560 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
561 | } | |
562 | ||
563 | /* Enable/disable transmitters */ | |
564 | static void ene_tx_set_transmitters(struct ene_device *dev) | |
565 | { | |
566 | unsigned long flags; | |
567 | ||
568 | spin_lock_irqsave(&dev->hw_lock, flags); | |
569 | ene_set_clear_reg_mask(dev, ENE_GPIOFS8, ENE_GPIOFS8_GPIO41, | |
570 | !!(dev->transmitter_mask & 0x01)); | |
571 | ene_set_clear_reg_mask(dev, ENE_GPIOFS1, ENE_GPIOFS1_GPIO0D, | |
572 | !!(dev->transmitter_mask & 0x02)); | |
573 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
574 | } | |
575 | ||
9ea53b74 | 576 | /* prepare transmission */ |
c29bc4d7 | 577 | static void ene_tx_enable(struct ene_device *dev) |
9ea53b74 | 578 | { |
11b64d31 ML |
579 | u8 conf1 = ene_read_reg(dev, ENE_CIRCFG); |
580 | u8 fwreg2 = ene_read_reg(dev, ENE_FW2); | |
9ea53b74 | 581 | |
9ea53b74 ML |
582 | dev->saved_conf1 = conf1; |
583 | ||
11b64d31 ML |
584 | /* Show information about currently connected transmitter jacks */ |
585 | if (fwreg2 & ENE_FW2_EMMITER1_CONN) | |
586 | dbg("TX: Transmitter #1 is connected"); | |
9ea53b74 | 587 | |
11b64d31 ML |
588 | if (fwreg2 & ENE_FW2_EMMITER2_CONN) |
589 | dbg("TX: Transmitter #2 is connected"); | |
9ea53b74 | 590 | |
11b64d31 | 591 | if (!(fwreg2 & (ENE_FW2_EMMITER1_CONN | ENE_FW2_EMMITER2_CONN))) |
7de3461c | 592 | pr_warn("TX: transmitter cable isn't connected!\n"); |
11b64d31 | 593 | |
11b64d31 ML |
594 | /* disable receive on revc */ |
595 | if (dev->hw_revision == ENE_HW_C) | |
596 | conf1 &= ~ENE_CIRCFG_RX_EN; | |
9ea53b74 | 597 | |
11b64d31 ML |
598 | /* Enable TX engine */ |
599 | conf1 |= ENE_CIRCFG_TX_EN | ENE_CIRCFG_TX_IRQ; | |
600 | ene_write_reg(dev, ENE_CIRCFG, conf1); | |
9ea53b74 ML |
601 | } |
602 | ||
603 | /* end transmission */ | |
c29bc4d7 | 604 | static void ene_tx_disable(struct ene_device *dev) |
9ea53b74 | 605 | { |
11b64d31 | 606 | ene_write_reg(dev, ENE_CIRCFG, dev->saved_conf1); |
931e39a1 | 607 | dev->tx_buffer = NULL; |
9ea53b74 ML |
608 | } |
609 | ||
9ea53b74 ML |
610 | |
611 | /* TX one sample - must be called with dev->hw_lock*/ | |
612 | static void ene_tx_sample(struct ene_device *dev) | |
613 | { | |
614 | u8 raw_tx; | |
615 | u32 sample; | |
11b64d31 | 616 | bool pulse = dev->tx_sample_pulse; |
9ea53b74 | 617 | |
931e39a1 | 618 | if (!dev->tx_buffer) { |
7de3461c | 619 | pr_warn("TX: BUG: attempt to transmit NULL buffer\n"); |
9ea53b74 ML |
620 | return; |
621 | } | |
622 | ||
623 | /* Grab next TX sample */ | |
624 | if (!dev->tx_sample) { | |
11b64d31 ML |
625 | |
626 | if (dev->tx_pos == dev->tx_len) { | |
9ea53b74 | 627 | if (!dev->tx_done) { |
11b64d31 ML |
628 | dbg("TX: no more data to send"); |
629 | dev->tx_done = true; | |
9ea53b74 ML |
630 | goto exit; |
631 | } else { | |
11b64d31 | 632 | dbg("TX: last sample sent by hardware"); |
c29bc4d7 | 633 | ene_tx_disable(dev); |
9ea53b74 ML |
634 | complete(&dev->tx_complete); |
635 | return; | |
636 | } | |
637 | } | |
638 | ||
639 | sample = dev->tx_buffer[dev->tx_pos++]; | |
640 | dev->tx_sample_pulse = !dev->tx_sample_pulse; | |
641 | ||
11b64d31 | 642 | dev->tx_sample = DIV_ROUND_CLOSEST(sample, sample_period); |
9ea53b74 | 643 | |
9ea53b74 | 644 | if (!dev->tx_sample) |
11b64d31 | 645 | dev->tx_sample = 1; |
9ea53b74 ML |
646 | } |
647 | ||
11b64d31 | 648 | raw_tx = min(dev->tx_sample , (unsigned int)ENE_CIRRLC_OUT_MASK); |
9ea53b74 ML |
649 | dev->tx_sample -= raw_tx; |
650 | ||
11b64d31 ML |
651 | dbg("TX: sample %8d (%s)", raw_tx * sample_period, |
652 | pulse ? "pulse" : "space"); | |
653 | if (pulse) | |
654 | raw_tx |= ENE_CIRRLC_OUT_PULSE; | |
655 | ||
656 | ene_write_reg(dev, | |
657 | dev->tx_reg ? ENE_CIRRLC_OUT1 : ENE_CIRRLC_OUT0, raw_tx); | |
9ea53b74 | 658 | |
9ea53b74 ML |
659 | dev->tx_reg = !dev->tx_reg; |
660 | exit: | |
661 | /* simulate TX done interrupt */ | |
662 | if (txsim) | |
663 | mod_timer(&dev->tx_sim_timer, jiffies + HZ / 500); | |
664 | } | |
665 | ||
666 | /* timer to simulate tx done interrupt */ | |
667 | static void ene_tx_irqsim(unsigned long data) | |
668 | { | |
669 | struct ene_device *dev = (struct ene_device *)data; | |
670 | unsigned long flags; | |
671 | ||
672 | spin_lock_irqsave(&dev->hw_lock, flags); | |
673 | ene_tx_sample(dev); | |
674 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
675 | } | |
676 | ||
677 | ||
678 | /* read irq status and ack it */ | |
679 | static int ene_irq_status(struct ene_device *dev) | |
680 | { | |
681 | u8 irq_status; | |
682 | u8 fw_flags1, fw_flags2; | |
9ea53b74 ML |
683 | int retval = 0; |
684 | ||
11b64d31 | 685 | fw_flags2 = ene_read_reg(dev, ENE_FW2); |
9ea53b74 ML |
686 | |
687 | if (dev->hw_revision < ENE_HW_C) { | |
11b64d31 | 688 | irq_status = ene_read_reg(dev, ENEB_IRQ_STATUS); |
9ea53b74 ML |
689 | |
690 | if (!(irq_status & ENEB_IRQ_STATUS_IR)) | |
691 | return 0; | |
692 | ||
11b64d31 | 693 | ene_clear_reg_mask(dev, ENEB_IRQ_STATUS, ENEB_IRQ_STATUS_IR); |
9ea53b74 ML |
694 | return ENE_IRQ_RX; |
695 | } | |
696 | ||
11b64d31 ML |
697 | irq_status = ene_read_reg(dev, ENE_IRQ); |
698 | if (!(irq_status & ENE_IRQ_STATUS)) | |
9ea53b74 ML |
699 | return 0; |
700 | ||
701 | /* original driver does that twice - a workaround ? */ | |
11b64d31 ML |
702 | ene_write_reg(dev, ENE_IRQ, irq_status & ~ENE_IRQ_STATUS); |
703 | ene_write_reg(dev, ENE_IRQ, irq_status & ~ENE_IRQ_STATUS); | |
9ea53b74 | 704 | |
11b64d31 ML |
705 | /* check RX interrupt */ |
706 | if (fw_flags2 & ENE_FW2_RXIRQ) { | |
707 | retval |= ENE_IRQ_RX; | |
708 | ene_write_reg(dev, ENE_FW2, fw_flags2 & ~ENE_FW2_RXIRQ); | |
709 | } | |
9ea53b74 | 710 | |
11b64d31 ML |
711 | /* check TX interrupt */ |
712 | fw_flags1 = ene_read_reg(dev, ENE_FW1); | |
9ea53b74 | 713 | if (fw_flags1 & ENE_FW1_TXIRQ) { |
11b64d31 | 714 | ene_write_reg(dev, ENE_FW1, fw_flags1 & ~ENE_FW1_TXIRQ); |
9ea53b74 ML |
715 | retval |= ENE_IRQ_TX; |
716 | } | |
717 | ||
11b64d31 ML |
718 | return retval; |
719 | } | |
9ea53b74 | 720 | |
9ea53b74 ML |
721 | /* interrupt handler */ |
722 | static irqreturn_t ene_isr(int irq, void *data) | |
723 | { | |
11b64d31 ML |
724 | u16 hw_value, reg; |
725 | int hw_sample, irq_status; | |
726 | bool pulse; | |
9ea53b74 | 727 | unsigned long flags; |
9ea53b74 ML |
728 | irqreturn_t retval = IRQ_NONE; |
729 | struct ene_device *dev = (struct ene_device *)data; | |
4651918a | 730 | DEFINE_IR_RAW_EVENT(ev); |
9ea53b74 | 731 | |
9ea53b74 | 732 | spin_lock_irqsave(&dev->hw_lock, flags); |
11b64d31 ML |
733 | |
734 | dbg_verbose("ISR called"); | |
c29bc4d7 | 735 | ene_rx_read_hw_pointer(dev); |
9ea53b74 ML |
736 | irq_status = ene_irq_status(dev); |
737 | ||
738 | if (!irq_status) | |
739 | goto unlock; | |
740 | ||
741 | retval = IRQ_HANDLED; | |
742 | ||
743 | if (irq_status & ENE_IRQ_TX) { | |
11b64d31 | 744 | dbg_verbose("TX interrupt"); |
9ea53b74 | 745 | if (!dev->hw_learning_and_tx_capable) { |
11b64d31 | 746 | dbg("TX interrupt on unsupported device!"); |
9ea53b74 ML |
747 | goto unlock; |
748 | } | |
749 | ene_tx_sample(dev); | |
750 | } | |
751 | ||
752 | if (!(irq_status & ENE_IRQ_RX)) | |
753 | goto unlock; | |
754 | ||
11b64d31 | 755 | dbg_verbose("RX interrupt"); |
9ea53b74 | 756 | |
e1b1ddbe | 757 | if (dev->hw_learning_and_tx_capable) |
11b64d31 ML |
758 | ene_rx_sense_carrier(dev); |
759 | ||
760 | /* On hardware that don't support extra buffer we need to trust | |
761 | the interrupt and not track the read pointer */ | |
762 | if (!dev->hw_extra_buffer) | |
763 | dev->r_pointer = dev->w_pointer == 0 ? ENE_FW_PACKET_SIZE : 0; | |
764 | ||
765 | while (1) { | |
9ea53b74 | 766 | |
c29bc4d7 | 767 | reg = ene_rx_get_sample_reg(dev); |
11b64d31 ML |
768 | |
769 | dbg_verbose("next sample to read at: %04x", reg); | |
770 | if (!reg) | |
771 | break; | |
772 | ||
773 | hw_value = ene_read_reg(dev, reg); | |
9ea53b74 ML |
774 | |
775 | if (dev->rx_fan_input_inuse) { | |
11b64d31 ML |
776 | |
777 | int offset = ENE_FW_SMPL_BUF_FAN - ENE_FW_SAMPLE_BUFFER; | |
778 | ||
9ea53b74 | 779 | /* read high part of the sample */ |
11b64d31 ML |
780 | hw_value |= ene_read_reg(dev, reg + offset) << 8; |
781 | pulse = hw_value & ENE_FW_SMPL_BUF_FAN_PLS; | |
9ea53b74 ML |
782 | |
783 | /* clear space bit, and other unused bits */ | |
11b64d31 ML |
784 | hw_value &= ENE_FW_SMPL_BUF_FAN_MSK; |
785 | hw_sample = hw_value * ENE_FW_SAMPLE_PERIOD_FAN; | |
9ea53b74 ML |
786 | |
787 | } else { | |
11b64d31 ML |
788 | pulse = !(hw_value & ENE_FW_SAMPLE_SPACE); |
789 | hw_value &= ~ENE_FW_SAMPLE_SPACE; | |
9ea53b74 | 790 | hw_sample = hw_value * sample_period; |
931e39a1 ML |
791 | |
792 | if (dev->rx_period_adjust) { | |
11b64d31 ML |
793 | hw_sample *= 100; |
794 | hw_sample /= (100 + dev->rx_period_adjust); | |
931e39a1 | 795 | } |
9ea53b74 | 796 | } |
9ea53b74 | 797 | |
11b64d31 ML |
798 | if (!dev->hw_extra_buffer && !hw_sample) { |
799 | dev->r_pointer = dev->w_pointer; | |
800 | continue; | |
801 | } | |
931e39a1 | 802 | |
11b64d31 | 803 | dbg("RX: %d (%s)", hw_sample, pulse ? "pulse" : "space"); |
931e39a1 | 804 | |
5aad7242 | 805 | ev.duration = US_TO_NS(hw_sample); |
931e39a1 | 806 | ev.pulse = pulse; |
d8b4b582 | 807 | ir_raw_event_store_with_filter(dev->rdev, &ev); |
9ea53b74 | 808 | } |
931e39a1 | 809 | |
d8b4b582 | 810 | ir_raw_event_handle(dev->rdev); |
9ea53b74 ML |
811 | unlock: |
812 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
813 | return retval; | |
814 | } | |
815 | ||
816 | /* Initialize default settings */ | |
c29bc4d7 | 817 | static void ene_setup_default_settings(struct ene_device *dev) |
9ea53b74 | 818 | { |
9ea53b74 | 819 | dev->tx_period = 32; |
11b64d31 ML |
820 | dev->tx_duty_cycle = 50; /*%*/ |
821 | dev->transmitter_mask = 0x03; | |
c29bc4d7 | 822 | dev->learning_mode_enabled = learning_mode_force; |
9ea53b74 | 823 | |
11b64d31 | 824 | /* Set reasonable default timeout */ |
5aad7242 | 825 | dev->rdev->timeout = US_TO_NS(150000); |
9ea53b74 ML |
826 | } |
827 | ||
c29bc4d7 ML |
828 | /* Upload all hardware settings at once. Used at load and resume time */ |
829 | static void ene_setup_hw_settings(struct ene_device *dev) | |
830 | { | |
831 | if (dev->hw_learning_and_tx_capable) { | |
832 | ene_tx_set_carrier(dev); | |
833 | ene_tx_set_transmitters(dev); | |
834 | } | |
835 | ||
836 | ene_rx_setup(dev); | |
837 | } | |
838 | ||
9ea53b74 | 839 | /* outside interface: called on first open*/ |
d8b4b582 | 840 | static int ene_open(struct rc_dev *rdev) |
9ea53b74 | 841 | { |
d8b4b582 | 842 | struct ene_device *dev = rdev->priv; |
9ea53b74 ML |
843 | unsigned long flags; |
844 | ||
845 | spin_lock_irqsave(&dev->hw_lock, flags); | |
9ea53b74 ML |
846 | ene_rx_enable(dev); |
847 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
848 | return 0; | |
849 | } | |
850 | ||
851 | /* outside interface: called on device close*/ | |
d8b4b582 | 852 | static void ene_close(struct rc_dev *rdev) |
9ea53b74 | 853 | { |
d8b4b582 | 854 | struct ene_device *dev = rdev->priv; |
9ea53b74 ML |
855 | unsigned long flags; |
856 | spin_lock_irqsave(&dev->hw_lock, flags); | |
857 | ||
858 | ene_rx_disable(dev); | |
9ea53b74 ML |
859 | spin_unlock_irqrestore(&dev->hw_lock, flags); |
860 | } | |
861 | ||
931e39a1 | 862 | /* outside interface: set transmitter mask */ |
d8b4b582 | 863 | static int ene_set_tx_mask(struct rc_dev *rdev, u32 tx_mask) |
9ea53b74 | 864 | { |
d8b4b582 | 865 | struct ene_device *dev = rdev->priv; |
11b64d31 | 866 | dbg("TX: attempt to set transmitter mask %02x", tx_mask); |
931e39a1 ML |
867 | |
868 | /* invalid txmask */ | |
11b64d31 ML |
869 | if (!tx_mask || tx_mask & ~0x03) { |
870 | dbg("TX: invalid mask"); | |
931e39a1 ML |
871 | /* return count of transmitters */ |
872 | return 2; | |
9ea53b74 ML |
873 | } |
874 | ||
931e39a1 | 875 | dev->transmitter_mask = tx_mask; |
c29bc4d7 | 876 | ene_tx_set_transmitters(dev); |
931e39a1 ML |
877 | return 0; |
878 | } | |
9ea53b74 | 879 | |
931e39a1 | 880 | /* outside interface : set tx carrier */ |
d8b4b582 | 881 | static int ene_set_tx_carrier(struct rc_dev *rdev, u32 carrier) |
931e39a1 | 882 | { |
d8b4b582 | 883 | struct ene_device *dev = rdev->priv; |
11b64d31 | 884 | u32 period = 2000000 / carrier; |
9ea53b74 | 885 | |
11b64d31 | 886 | dbg("TX: attempt to set tx carrier to %d kHz", carrier); |
9ea53b74 | 887 | |
11b64d31 ML |
888 | if (period && (period > ENE_CIRMOD_PRD_MAX || |
889 | period < ENE_CIRMOD_PRD_MIN)) { | |
9ea53b74 | 890 | |
11b64d31 | 891 | dbg("TX: out of range %d-%d kHz carrier", |
c29bc4d7 | 892 | 2000 / ENE_CIRMOD_PRD_MIN, 2000 / ENE_CIRMOD_PRD_MAX); |
11b64d31 | 893 | return -1; |
9ea53b74 ML |
894 | } |
895 | ||
931e39a1 | 896 | dev->tx_period = period; |
c29bc4d7 | 897 | ene_tx_set_carrier(dev); |
931e39a1 | 898 | return 0; |
9ea53b74 ML |
899 | } |
900 | ||
11b64d31 | 901 | /*outside interface : set tx duty cycle */ |
d8b4b582 | 902 | static int ene_set_tx_duty_cycle(struct rc_dev *rdev, u32 duty_cycle) |
11b64d31 | 903 | { |
d8b4b582 | 904 | struct ene_device *dev = rdev->priv; |
11b64d31 | 905 | dbg("TX: setting duty cycle to %d%%", duty_cycle); |
11b64d31 | 906 | dev->tx_duty_cycle = duty_cycle; |
c29bc4d7 | 907 | ene_tx_set_carrier(dev); |
11b64d31 ML |
908 | return 0; |
909 | } | |
931e39a1 ML |
910 | |
911 | /* outside interface: enable learning mode */ | |
d8b4b582 | 912 | static int ene_set_learning_mode(struct rc_dev *rdev, int enable) |
9ea53b74 | 913 | { |
d8b4b582 | 914 | struct ene_device *dev = rdev->priv; |
9ea53b74 | 915 | unsigned long flags; |
c29bc4d7 | 916 | if (enable == dev->learning_mode_enabled) |
931e39a1 | 917 | return 0; |
9ea53b74 | 918 | |
931e39a1 | 919 | spin_lock_irqsave(&dev->hw_lock, flags); |
c29bc4d7 | 920 | dev->learning_mode_enabled = enable; |
11b64d31 ML |
921 | ene_rx_disable(dev); |
922 | ene_rx_setup(dev); | |
923 | ene_rx_enable(dev); | |
931e39a1 ML |
924 | spin_unlock_irqrestore(&dev->hw_lock, flags); |
925 | return 0; | |
926 | } | |
9ea53b74 | 927 | |
d8b4b582 | 928 | static int ene_set_carrier_report(struct rc_dev *rdev, int enable) |
e1b1ddbe | 929 | { |
d8b4b582 | 930 | struct ene_device *dev = rdev->priv; |
e1b1ddbe ML |
931 | unsigned long flags; |
932 | ||
933 | if (enable == dev->carrier_detect_enabled) | |
934 | return 0; | |
935 | ||
936 | spin_lock_irqsave(&dev->hw_lock, flags); | |
937 | dev->carrier_detect_enabled = enable; | |
938 | ene_rx_disable(dev); | |
939 | ene_rx_setup(dev); | |
940 | ene_rx_enable(dev); | |
941 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
942 | return 0; | |
943 | } | |
944 | ||
931e39a1 | 945 | /* outside interface: enable or disable idle mode */ |
d8b4b582 | 946 | static void ene_set_idle(struct rc_dev *rdev, bool idle) |
931e39a1 | 947 | { |
d8b4b582 DH |
948 | struct ene_device *dev = rdev->priv; |
949 | ||
c29bc4d7 | 950 | if (idle) { |
d8b4b582 | 951 | ene_rx_reset(dev); |
c29bc4d7 ML |
952 | dbg("RX: end of data"); |
953 | } | |
11b64d31 | 954 | } |
9ea53b74 | 955 | |
931e39a1 | 956 | /* outside interface: transmit */ |
5588dc2b | 957 | static int ene_transmit(struct rc_dev *rdev, unsigned *buf, unsigned n) |
931e39a1 | 958 | { |
d8b4b582 | 959 | struct ene_device *dev = rdev->priv; |
931e39a1 ML |
960 | unsigned long flags; |
961 | ||
962 | dev->tx_buffer = buf; | |
5588dc2b | 963 | dev->tx_len = n; |
9ea53b74 ML |
964 | dev->tx_pos = 0; |
965 | dev->tx_reg = 0; | |
966 | dev->tx_done = 0; | |
967 | dev->tx_sample = 0; | |
968 | dev->tx_sample_pulse = 0; | |
969 | ||
11b64d31 | 970 | dbg("TX: %d samples", dev->tx_len); |
9ea53b74 ML |
971 | |
972 | spin_lock_irqsave(&dev->hw_lock, flags); | |
973 | ||
c29bc4d7 | 974 | ene_tx_enable(dev); |
9ea53b74 ML |
975 | |
976 | /* Transmit first two samples */ | |
977 | ene_tx_sample(dev); | |
978 | ene_tx_sample(dev); | |
979 | ||
980 | spin_unlock_irqrestore(&dev->hw_lock, flags); | |
981 | ||
982 | if (wait_for_completion_timeout(&dev->tx_complete, 2 * HZ) == 0) { | |
11b64d31 | 983 | dbg("TX: timeout"); |
9ea53b74 | 984 | spin_lock_irqsave(&dev->hw_lock, flags); |
c29bc4d7 | 985 | ene_tx_disable(dev); |
9ea53b74 ML |
986 | spin_unlock_irqrestore(&dev->hw_lock, flags); |
987 | } else | |
11b64d31 | 988 | dbg("TX: done"); |
9ea53b74 ML |
989 | return n; |
990 | } | |
991 | ||
931e39a1 ML |
992 | /* probe entry */ |
993 | static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id) | |
9ea53b74 | 994 | { |
9ea53b74 | 995 | int error = -ENOMEM; |
d8b4b582 | 996 | struct rc_dev *rdev; |
931e39a1 | 997 | struct ene_device *dev; |
9ea53b74 | 998 | |
931e39a1 | 999 | /* allocate memory */ |
9ea53b74 | 1000 | dev = kzalloc(sizeof(struct ene_device), GFP_KERNEL); |
d8b4b582 DH |
1001 | rdev = rc_allocate_device(); |
1002 | if (!dev || !rdev) | |
2e75bcea | 1003 | goto error1; |
9ea53b74 ML |
1004 | |
1005 | /* validate resources */ | |
931e39a1 ML |
1006 | error = -ENODEV; |
1007 | ||
2e4c5562 KM |
1008 | /* init these to -1, as 0 is valid for both */ |
1009 | dev->hw_io = -1; | |
1010 | dev->irq = -1; | |
1011 | ||
9ea53b74 | 1012 | if (!pnp_port_valid(pnp_dev, 0) || |
11b64d31 | 1013 | pnp_port_len(pnp_dev, 0) < ENE_IO_SIZE) |
931e39a1 | 1014 | goto error; |
9ea53b74 ML |
1015 | |
1016 | if (!pnp_irq_valid(pnp_dev, 0)) | |
931e39a1 | 1017 | goto error; |
9ea53b74 | 1018 | |
9ea53b74 ML |
1019 | spin_lock_init(&dev->hw_lock); |
1020 | ||
931e39a1 ML |
1021 | pnp_set_drvdata(pnp_dev, dev); |
1022 | dev->pnp_dev = pnp_dev; | |
9ea53b74 | 1023 | |
11b64d31 ML |
1024 | /* don't allow too short/long sample periods */ |
1025 | if (sample_period < 5 || sample_period > 0x7F) | |
1026 | sample_period = ENE_DEFAULT_SAMPLE_PERIOD; | |
1027 | ||
9ea53b74 ML |
1028 | /* detect hardware version and features */ |
1029 | error = ene_hw_detect(dev); | |
1030 | if (error) | |
931e39a1 | 1031 | goto error; |
9ea53b74 | 1032 | |
9ea53b74 | 1033 | if (!dev->hw_learning_and_tx_capable && txsim) { |
11b64d31 | 1034 | dev->hw_learning_and_tx_capable = true; |
9ea53b74 ML |
1035 | setup_timer(&dev->tx_sim_timer, ene_tx_irqsim, |
1036 | (long unsigned int)dev); | |
7de3461c | 1037 | pr_warn("Simulation of TX activated\n"); |
9ea53b74 ML |
1038 | } |
1039 | ||
a06423c9 | 1040 | if (!dev->hw_learning_and_tx_capable) |
c29bc4d7 | 1041 | learning_mode_force = false; |
a06423c9 | 1042 | |
d8b4b582 | 1043 | rdev->driver_type = RC_DRIVER_IR_RAW; |
52b66144 | 1044 | rdev->allowed_protos = RC_TYPE_ALL; |
d8b4b582 DH |
1045 | rdev->priv = dev; |
1046 | rdev->open = ene_open; | |
1047 | rdev->close = ene_close; | |
1048 | rdev->s_idle = ene_set_idle; | |
1049 | rdev->driver_name = ENE_DRIVER_NAME; | |
1050 | rdev->map_name = RC_MAP_RC6_MCE; | |
1051 | rdev->input_name = "ENE eHome Infrared Remote Receiver"; | |
9ea53b74 | 1052 | |
931e39a1 | 1053 | if (dev->hw_learning_and_tx_capable) { |
d8b4b582 | 1054 | rdev->s_learning_mode = ene_set_learning_mode; |
931e39a1 | 1055 | init_completion(&dev->tx_complete); |
d8b4b582 DH |
1056 | rdev->tx_ir = ene_transmit; |
1057 | rdev->s_tx_mask = ene_set_tx_mask; | |
1058 | rdev->s_tx_carrier = ene_set_tx_carrier; | |
1059 | rdev->s_tx_duty_cycle = ene_set_tx_duty_cycle; | |
1060 | rdev->s_carrier_report = ene_set_carrier_report; | |
1061 | rdev->input_name = "ENE eHome Infrared Remote Transceiver"; | |
931e39a1 ML |
1062 | } |
1063 | ||
2e4c5562 KM |
1064 | dev->rdev = rdev; |
1065 | ||
c29bc4d7 ML |
1066 | ene_rx_setup_hw_buffer(dev); |
1067 | ene_setup_default_settings(dev); | |
1068 | ene_setup_hw_settings(dev); | |
931e39a1 | 1069 | |
11b64d31 ML |
1070 | device_set_wakeup_capable(&pnp_dev->dev, true); |
1071 | device_set_wakeup_enable(&pnp_dev->dev, true); | |
9ea53b74 | 1072 | |
9ef449c6 LH |
1073 | /* claim the resources */ |
1074 | error = -EBUSY; | |
1075 | dev->hw_io = pnp_port_start(pnp_dev, 0); | |
1076 | if (!request_region(dev->hw_io, ENE_IO_SIZE, ENE_DRIVER_NAME)) { | |
1077 | dev->hw_io = -1; | |
1078 | dev->irq = -1; | |
1079 | goto error; | |
1080 | } | |
1081 | ||
1082 | dev->irq = pnp_irq(pnp_dev, 0); | |
1083 | if (request_irq(dev->irq, ene_isr, | |
1084 | IRQF_SHARED, ENE_DRIVER_NAME, (void *)dev)) { | |
1085 | dev->irq = -1; | |
1086 | goto error; | |
1087 | } | |
1088 | ||
d8b4b582 DH |
1089 | error = rc_register_device(rdev); |
1090 | if (error < 0) | |
931e39a1 ML |
1091 | goto error; |
1092 | ||
7de3461c | 1093 | pr_notice("driver has been successfully loaded\n"); |
9ea53b74 | 1094 | return 0; |
931e39a1 | 1095 | error: |
11b64d31 | 1096 | if (dev && dev->irq >= 0) |
931e39a1 | 1097 | free_irq(dev->irq, dev); |
11b64d31 ML |
1098 | if (dev && dev->hw_io >= 0) |
1099 | release_region(dev->hw_io, ENE_IO_SIZE); | |
2e75bcea | 1100 | error1: |
d8b4b582 | 1101 | rc_free_device(rdev); |
9ea53b74 | 1102 | kfree(dev); |
9ea53b74 ML |
1103 | return error; |
1104 | } | |
1105 | ||
1106 | /* main unload function */ | |
1107 | static void ene_remove(struct pnp_dev *pnp_dev) | |
1108 | { | |
1109 | struct ene_device *dev = pnp_get_drvdata(pnp_dev); | |
1110 | unsigned long flags; | |
1111 | ||
1112 | spin_lock_irqsave(&dev->hw_lock, flags); | |
1113 | ene_rx_disable(dev); | |
c29bc4d7 | 1114 | ene_rx_restore_hw_buffer(dev); |
9ea53b74 ML |
1115 | spin_unlock_irqrestore(&dev->hw_lock, flags); |
1116 | ||
1117 | free_irq(dev->irq, dev); | |
11b64d31 | 1118 | release_region(dev->hw_io, ENE_IO_SIZE); |
d8b4b582 | 1119 | rc_unregister_device(dev->rdev); |
9ea53b74 ML |
1120 | kfree(dev); |
1121 | } | |
1122 | ||
1123 | /* enable wake on IR (wakes on specific button on original remote) */ | |
1124 | static void ene_enable_wake(struct ene_device *dev, int enable) | |
1125 | { | |
1126 | enable = enable && device_may_wakeup(&dev->pnp_dev->dev); | |
11b64d31 ML |
1127 | dbg("wake on IR %s", enable ? "enabled" : "disabled"); |
1128 | ene_set_clear_reg_mask(dev, ENE_FW1, ENE_FW1_WAKE, enable); | |
9ea53b74 ML |
1129 | } |
1130 | ||
1131 | #ifdef CONFIG_PM | |
1132 | static int ene_suspend(struct pnp_dev *pnp_dev, pm_message_t state) | |
1133 | { | |
1134 | struct ene_device *dev = pnp_get_drvdata(pnp_dev); | |
11b64d31 ML |
1135 | ene_enable_wake(dev, true); |
1136 | ||
1137 | /* TODO: add support for wake pattern */ | |
9ea53b74 ML |
1138 | return 0; |
1139 | } | |
1140 | ||
1141 | static int ene_resume(struct pnp_dev *pnp_dev) | |
1142 | { | |
1143 | struct ene_device *dev = pnp_get_drvdata(pnp_dev); | |
c29bc4d7 ML |
1144 | ene_setup_hw_settings(dev); |
1145 | ||
1146 | if (dev->rx_enabled) | |
9ea53b74 | 1147 | ene_rx_enable(dev); |
c29bc4d7 | 1148 | |
11b64d31 | 1149 | ene_enable_wake(dev, false); |
9ea53b74 ML |
1150 | return 0; |
1151 | } | |
1152 | #endif | |
1153 | ||
1154 | static void ene_shutdown(struct pnp_dev *pnp_dev) | |
1155 | { | |
1156 | struct ene_device *dev = pnp_get_drvdata(pnp_dev); | |
11b64d31 | 1157 | ene_enable_wake(dev, true); |
9ea53b74 ML |
1158 | } |
1159 | ||
1160 | static const struct pnp_device_id ene_ids[] = { | |
1161 | {.id = "ENE0100",}, | |
1162 | {.id = "ENE0200",}, | |
1163 | {.id = "ENE0201",}, | |
931e39a1 | 1164 | {.id = "ENE0202",}, |
9ea53b74 ML |
1165 | {}, |
1166 | }; | |
1167 | ||
1168 | static struct pnp_driver ene_driver = { | |
1169 | .name = ENE_DRIVER_NAME, | |
1170 | .id_table = ene_ids, | |
1171 | .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, | |
1172 | ||
1173 | .probe = ene_probe, | |
1174 | .remove = __devexit_p(ene_remove), | |
1175 | #ifdef CONFIG_PM | |
1176 | .suspend = ene_suspend, | |
1177 | .resume = ene_resume, | |
1178 | #endif | |
1179 | .shutdown = ene_shutdown, | |
1180 | }; | |
1181 | ||
1182 | static int __init ene_init(void) | |
1183 | { | |
1184 | return pnp_register_driver(&ene_driver); | |
1185 | } | |
1186 | ||
1187 | static void ene_exit(void) | |
1188 | { | |
1189 | pnp_unregister_driver(&ene_driver); | |
1190 | } | |
1191 | ||
1192 | module_param(sample_period, int, S_IRUGO); | |
1193 | MODULE_PARM_DESC(sample_period, "Hardware sample period (50 us default)"); | |
1194 | ||
c29bc4d7 ML |
1195 | module_param(learning_mode_force, bool, S_IRUGO); |
1196 | MODULE_PARM_DESC(learning_mode_force, "Enable learning mode by default"); | |
9ea53b74 ML |
1197 | |
1198 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
11b64d31 | 1199 | MODULE_PARM_DESC(debug, "Debug level"); |
9ea53b74 ML |
1200 | |
1201 | module_param(txsim, bool, S_IRUGO); | |
1202 | MODULE_PARM_DESC(txsim, | |
1203 | "Simulate TX features on unsupported hardware (dangerous)"); | |
1204 | ||
9ea53b74 ML |
1205 | MODULE_DEVICE_TABLE(pnp, ene_ids); |
1206 | MODULE_DESCRIPTION | |
11b64d31 ML |
1207 | ("Infrared input driver for KB3926B/C/D/E/F " |
1208 | "(aka ENE0100/ENE0200/ENE0201/ENE0202) CIR port"); | |
9ea53b74 ML |
1209 | |
1210 | MODULE_AUTHOR("Maxim Levitsky"); | |
1211 | MODULE_LICENSE("GPL"); | |
1212 | ||
1213 | module_init(ene_init); | |
1214 | module_exit(ene_exit); |