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Full support for Ginger Console
[linux-ginger.git] / drivers / media / video / cx18 / cx18-i2c.c
blob2477461e84d7cab5998496e72bba25021f3ee719
1 /*
2 * cx18 I2C functions
3 *
4 * Derived from ivtv-i2c.c
5 *
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
7 * Copyright (C) 2008 Andy Walls <awalls@radix.net>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 * 02111-1307 USA
23 */
24
25 #include "cx18-driver.h"
26 #include "cx18-io.h"
27 #include "cx18-cards.h"
28 #include "cx18-gpio.h"
29 #include "cx18-i2c.h"
30 #include "cx18-irq.h"
31 #include <media/ir-kbd-i2c.h>
32
33 #define CX18_REG_I2C_1_WR 0xf15000
34 #define CX18_REG_I2C_1_RD 0xf15008
35 #define CX18_REG_I2C_2_WR 0xf25100
36 #define CX18_REG_I2C_2_RD 0xf25108
37
38 #define SETSCL_BIT 0x0001
39 #define SETSDL_BIT 0x0002
40 #define GETSCL_BIT 0x0004
41 #define GETSDL_BIT 0x0008
42
43 #define CX18_CS5345_I2C_ADDR 0x4c
44 #define CX18_Z8F0811_IR_TX_I2C_ADDR 0x70
45 #define CX18_Z8F0811_IR_RX_I2C_ADDR 0x71
46
47 /* This array should match the CX18_HW_ defines */
48 static const u8 hw_addrs[] = {
49 0, /* CX18_HW_TUNER */
50 0, /* CX18_HW_TVEEPROM */
51 CX18_CS5345_I2C_ADDR, /* CX18_HW_CS5345 */
52 0, /* CX18_HW_DVB */
53 0, /* CX18_HW_418_AV */
54 0, /* CX18_HW_GPIO_MUX */
55 0, /* CX18_HW_GPIO_RESET_CTRL */
56 CX18_Z8F0811_IR_TX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_TX_HAUP */
57 CX18_Z8F0811_IR_RX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_RX_HAUP */
58 };
59
60 /* This array should match the CX18_HW_ defines */
61 /* This might well become a card-specific array */
62 static const u8 hw_bus[] = {
63 1, /* CX18_HW_TUNER */
64 0, /* CX18_HW_TVEEPROM */
65 0, /* CX18_HW_CS5345 */
66 0, /* CX18_HW_DVB */
67 0, /* CX18_HW_418_AV */
68 0, /* CX18_HW_GPIO_MUX */
69 0, /* CX18_HW_GPIO_RESET_CTRL */
70 0, /* CX18_HW_Z8F0811_IR_TX_HAUP */
71 0, /* CX18_HW_Z8F0811_IR_RX_HAUP */
72 };
73
74 /* This array should match the CX18_HW_ defines */
75 static const char * const hw_modules[] = {
76 "tuner", /* CX18_HW_TUNER */
77 NULL, /* CX18_HW_TVEEPROM */
78 "cs5345", /* CX18_HW_CS5345 */
79 NULL, /* CX18_HW_DVB */
80 NULL, /* CX18_HW_418_AV */
81 NULL, /* CX18_HW_GPIO_MUX */
82 NULL, /* CX18_HW_GPIO_RESET_CTRL */
83 NULL, /* CX18_HW_Z8F0811_IR_TX_HAUP */
84 NULL, /* CX18_HW_Z8F0811_IR_RX_HAUP */
85 };
86
87 /* This array should match the CX18_HW_ defines */
88 static const char * const hw_devicenames[] = {
89 "tuner",
90 "tveeprom",
91 "cs5345",
92 "cx23418_DTV",
93 "cx23418_AV",
94 "gpio_mux",
95 "gpio_reset_ctrl",
96 "ir_tx_z8f0811_haup",
97 "ir_rx_z8f0811_haup",
98 };
99
100 static const struct IR_i2c_init_data z8f0811_ir_init_data = {
101 .ir_codes = &ir_codes_hauppauge_new_table,
102 .internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR,
103 .type = IR_TYPE_RC5,
104 .name = "CX23418 Z8F0811 Hauppauge",
105 };
106
107 static int cx18_i2c_new_ir(struct i2c_adapter *adap, u32 hw, const char *type,
108 u8 addr)
109 {
110 struct i2c_board_info info;
111 unsigned short addr_list[2] = { addr, I2C_CLIENT_END };
112
113 memset(&info, 0, sizeof(struct i2c_board_info));
114 strlcpy(info.type, type, I2C_NAME_SIZE);
115
116 /* Our default information for ir-kbd-i2c.c to use */
117 switch (hw) {
118 case CX18_HW_Z8F0811_IR_RX_HAUP:
119 info.platform_data = (void *) &z8f0811_ir_init_data;
120 break;
121 default:
122 break;
123 }
124
125 return i2c_new_probed_device(adap, &info, addr_list) == NULL ? -1 : 0;
126 }
127
128 int cx18_i2c_register(struct cx18 *cx, unsigned idx)
129 {
130 struct v4l2_subdev *sd;
131 int bus = hw_bus[idx];
132 struct i2c_adapter *adap = &cx->i2c_adap[bus];
133 const char *mod = hw_modules[idx];
134 const char *type = hw_devicenames[idx];
135 u32 hw = 1 << idx;
136
137 if (idx >= ARRAY_SIZE(hw_addrs))
138 return -1;
139
140 if (hw == CX18_HW_TUNER) {
141 /* special tuner group handling */
142 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
143 adap, mod, type, 0, cx->card_i2c->radio);
144 if (sd != NULL)
145 sd->grp_id = hw;
146 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
147 adap, mod, type, 0, cx->card_i2c->demod);
148 if (sd != NULL)
149 sd->grp_id = hw;
150 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
151 adap, mod, type, 0, cx->card_i2c->tv);
152 if (sd != NULL)
153 sd->grp_id = hw;
154 return sd != NULL ? 0 : -1;
155 }
156
157 if (hw & CX18_HW_Z8F0811_IR_HAUP)
158 return cx18_i2c_new_ir(adap, hw, type, hw_addrs[idx]);
159
160 /* Is it not an I2C device or one we do not wish to register? */
161 if (!hw_addrs[idx])
162 return -1;
163
164 /* It's an I2C device other than an analog tuner or IR chip */
165 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, mod, type, hw_addrs[idx], NULL);
166 if (sd != NULL)
167 sd->grp_id = hw;
168 return sd != NULL ? 0 : -1;
169 }
170
171 /* Find the first member of the subdev group id in hw */
172 struct v4l2_subdev *cx18_find_hw(struct cx18 *cx, u32 hw)
173 {
174 struct v4l2_subdev *result = NULL;
175 struct v4l2_subdev *sd;
176
177 spin_lock(&cx->v4l2_dev.lock);
178 v4l2_device_for_each_subdev(sd, &cx->v4l2_dev) {
179 if (sd->grp_id == hw) {
180 result = sd;
181 break;
182 }
183 }
184 spin_unlock(&cx->v4l2_dev.lock);
185 return result;
186 }
187
188 static void cx18_setscl(void *data, int state)
189 {
190 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
191 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
192 u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
193 u32 r = cx18_read_reg(cx, addr);
194
195 if (state)
196 cx18_write_reg(cx, r | SETSCL_BIT, addr);
197 else
198 cx18_write_reg(cx, r & ~SETSCL_BIT, addr);
199 }
200
201 static void cx18_setsda(void *data, int state)
202 {
203 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
204 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
205 u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
206 u32 r = cx18_read_reg(cx, addr);
207
208 if (state)
209 cx18_write_reg(cx, r | SETSDL_BIT, addr);
210 else
211 cx18_write_reg(cx, r & ~SETSDL_BIT, addr);
212 }
213
214 static int cx18_getscl(void *data)
215 {
216 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
217 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
218 u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
219
220 return cx18_read_reg(cx, addr) & GETSCL_BIT;
221 }
222
223 static int cx18_getsda(void *data)
224 {
225 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
226 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
227 u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
228
229 return cx18_read_reg(cx, addr) & GETSDL_BIT;
230 }
231
232 /* template for i2c-bit-algo */
233 static struct i2c_adapter cx18_i2c_adap_template = {
234 .name = "cx18 i2c driver",
235 .algo = NULL, /* set by i2c-algo-bit */
236 .algo_data = NULL, /* filled from template */
237 .owner = THIS_MODULE,
238 };
239
240 #define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */
241 #define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */
242
243 static struct i2c_algo_bit_data cx18_i2c_algo_template = {
244 .setsda = cx18_setsda,
245 .setscl = cx18_setscl,
246 .getsda = cx18_getsda,
247 .getscl = cx18_getscl,
248 .udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/
249 .timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */
250 };
251
252 /* init + register i2c algo-bit adapter */
253 int init_cx18_i2c(struct cx18 *cx)
254 {
255 int i, err;
256 CX18_DEBUG_I2C("i2c init\n");
257
258 for (i = 0; i < 2; i++) {
259 /* Setup algorithm for adapter */
260 memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template,
261 sizeof(struct i2c_algo_bit_data));
262 cx->i2c_algo_cb_data[i].cx = cx;
263 cx->i2c_algo_cb_data[i].bus_index = i;
264 cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i];
265
266 /* Setup adapter */
267 memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template,
268 sizeof(struct i2c_adapter));
269 cx->i2c_adap[i].algo_data = &cx->i2c_algo[i];
270 sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name),
271 " #%d-%d", cx->instance, i);
272 i2c_set_adapdata(&cx->i2c_adap[i], &cx->v4l2_dev);
273 cx->i2c_adap[i].dev.parent = &cx->pci_dev->dev;
274 }
275
276 if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) {
277 /* Reset/Unreset I2C hardware block */
278 /* Clock select 220MHz */
279 cx18_write_reg_expect(cx, 0x10000000, 0xc71004,
280 0x00000000, 0x10001000);
281 /* Clock Enable */
282 cx18_write_reg_expect(cx, 0x10001000, 0xc71024,
283 0x00001000, 0x10001000);
284 }
285 /* courtesy of Steven Toth <stoth@hauppauge.com> */
286 cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0);
287 mdelay(10);
288 cx18_write_reg_expect(cx, 0x00c000c0, 0xc7001c, 0x000000c0, 0x00c000c0);
289 mdelay(10);
290 cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0);
291 mdelay(10);
292
293 /* Set to edge-triggered intrs. */
294 cx18_write_reg(cx, 0x00c00000, 0xc730c8);
295 /* Clear any stale intrs */
296 cx18_write_reg_expect(cx, HW2_I2C1_INT|HW2_I2C2_INT, HW2_INT_CLR_STATUS,
297 ~(HW2_I2C1_INT|HW2_I2C2_INT), HW2_I2C1_INT|HW2_I2C2_INT);
298
299 /* Hw I2C1 Clock Freq ~100kHz */
300 cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR);
301 cx18_setscl(&cx->i2c_algo_cb_data[0], 1);
302 cx18_setsda(&cx->i2c_algo_cb_data[0], 1);
303
304 /* Hw I2C2 Clock Freq ~100kHz */
305 cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR);
306 cx18_setscl(&cx->i2c_algo_cb_data[1], 1);
307 cx18_setsda(&cx->i2c_algo_cb_data[1], 1);
308
309 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL,
310 core, reset, (u32) CX18_GPIO_RESET_I2C);
311
312 err = i2c_bit_add_bus(&cx->i2c_adap[0]);
313 if (err)
314 goto err;
315 err = i2c_bit_add_bus(&cx->i2c_adap[1]);
316 if (err)
317 goto err_del_bus_0;
318 return 0;
319
320 err_del_bus_0:
321 i2c_del_adapter(&cx->i2c_adap[0]);
322 err:
323 return err;
324 }
325
326 void exit_cx18_i2c(struct cx18 *cx)
327 {
328 int i;
329 CX18_DEBUG_I2C("i2c exit\n");
330 cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_1_WR) | 4,
331 CX18_REG_I2C_1_WR);
332 cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_2_WR) | 4,
333 CX18_REG_I2C_2_WR);
334
335 for (i = 0; i < 2; i++) {
336 i2c_del_adapter(&cx->i2c_adap[i]);
337 }
338 }
339
340 /*
341 Hauppauge HVR1600 should have:
342 32 cx24227
343 98 unknown
344 a0 eeprom
345 c2 tuner
346 e? zilog ir
347 */
Linux for Ginger Game Console