4 * Derived from ivtv-i2c.c
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
7 * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net>
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.
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.
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
25 #include "cx18-driver.h"
27 #include "cx18-cards.h"
28 #include "cx18-gpio.h"
32 #define CX18_REG_I2C_1_WR 0xf15000
33 #define CX18_REG_I2C_1_RD 0xf15008
34 #define CX18_REG_I2C_2_WR 0xf25100
35 #define CX18_REG_I2C_2_RD 0xf25108
37 #define SETSCL_BIT 0x0001
38 #define SETSDL_BIT 0x0002
39 #define GETSCL_BIT 0x0004
40 #define GETSDL_BIT 0x0008
42 #define CX18_CS5345_I2C_ADDR 0x4c
43 #define CX18_Z8F0811_IR_TX_I2C_ADDR 0x70
44 #define CX18_Z8F0811_IR_RX_I2C_ADDR 0x71
46 /* This array should match the CX18_HW_ defines */
47 static const u8 hw_addrs[] = {
48 0, /* CX18_HW_TUNER */
49 0, /* CX18_HW_TVEEPROM */
50 CX18_CS5345_I2C_ADDR, /* CX18_HW_CS5345 */
52 0, /* CX18_HW_418_AV */
53 0, /* CX18_HW_GPIO_MUX */
54 0, /* CX18_HW_GPIO_RESET_CTRL */
55 CX18_Z8F0811_IR_TX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_TX_HAUP */
56 CX18_Z8F0811_IR_RX_I2C_ADDR, /* CX18_HW_Z8F0811_IR_RX_HAUP */
59 /* This array should match the CX18_HW_ defines */
60 /* This might well become a card-specific array */
61 static const u8 hw_bus[] = {
62 1, /* CX18_HW_TUNER */
63 0, /* CX18_HW_TVEEPROM */
64 0, /* CX18_HW_CS5345 */
66 0, /* CX18_HW_418_AV */
67 0, /* CX18_HW_GPIO_MUX */
68 0, /* CX18_HW_GPIO_RESET_CTRL */
69 0, /* CX18_HW_Z8F0811_IR_TX_HAUP */
70 0, /* CX18_HW_Z8F0811_IR_RX_HAUP */
73 /* This array should match the CX18_HW_ defines */
74 static const char * const hw_modules[] = {
75 "tuner", /* CX18_HW_TUNER */
76 NULL, /* CX18_HW_TVEEPROM */
77 "cs5345", /* CX18_HW_CS5345 */
78 NULL, /* CX18_HW_DVB */
79 NULL, /* CX18_HW_418_AV */
80 NULL, /* CX18_HW_GPIO_MUX */
81 NULL, /* CX18_HW_GPIO_RESET_CTRL */
82 NULL, /* CX18_HW_Z8F0811_IR_TX_HAUP */
83 NULL, /* CX18_HW_Z8F0811_IR_RX_HAUP */
86 /* This array should match the CX18_HW_ defines */
87 static const char * const hw_devicenames[] = {
99 static int cx18_i2c_new_ir(struct cx18 *cx, struct i2c_adapter *adap, u32 hw,
100 const char *type, u8 addr)
102 struct i2c_board_info info;
103 struct IR_i2c_init_data *init_data = &cx->ir_i2c_init_data;
104 unsigned short addr_list[2] = { addr, I2C_CLIENT_END };
106 memset(&info, 0, sizeof(struct i2c_board_info));
107 strlcpy(info.type, type, I2C_NAME_SIZE);
109 /* Our default information for ir-kbd-i2c.c to use */
111 case CX18_HW_Z8F0811_IR_RX_HAUP:
112 init_data->ir_codes = RC_MAP_HAUPPAUGE_NEW;
113 init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
114 init_data->type = IR_TYPE_RC5;
115 init_data->name = cx->card_name;
116 info.platform_data = init_data;
120 return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ?
124 int cx18_i2c_register(struct cx18 *cx, unsigned idx)
126 struct v4l2_subdev *sd;
127 int bus = hw_bus[idx];
128 struct i2c_adapter *adap = &cx->i2c_adap[bus];
129 const char *mod = hw_modules[idx];
130 const char *type = hw_devicenames[idx];
133 if (idx >= ARRAY_SIZE(hw_addrs))
136 if (hw == CX18_HW_TUNER) {
137 /* special tuner group handling */
138 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
139 adap, mod, type, 0, cx->card_i2c->radio);
142 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
143 adap, mod, type, 0, cx->card_i2c->demod);
146 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev,
147 adap, mod, type, 0, cx->card_i2c->tv);
150 return sd != NULL ? 0 : -1;
153 if (hw & CX18_HW_IR_ANY)
154 return cx18_i2c_new_ir(cx, adap, hw, type, hw_addrs[idx]);
156 /* Is it not an I2C device or one we do not wish to register? */
160 /* It's an I2C device other than an analog tuner or IR chip */
161 sd = v4l2_i2c_new_subdev(&cx->v4l2_dev, adap, mod, type, hw_addrs[idx], NULL);
164 return sd != NULL ? 0 : -1;
167 /* Find the first member of the subdev group id in hw */
168 struct v4l2_subdev *cx18_find_hw(struct cx18 *cx, u32 hw)
170 struct v4l2_subdev *result = NULL;
171 struct v4l2_subdev *sd;
173 spin_lock(&cx->v4l2_dev.lock);
174 v4l2_device_for_each_subdev(sd, &cx->v4l2_dev) {
175 if (sd->grp_id == hw) {
180 spin_unlock(&cx->v4l2_dev.lock);
184 static void cx18_setscl(void *data, int state)
186 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
187 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
188 u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
189 u32 r = cx18_read_reg(cx, addr);
192 cx18_write_reg(cx, r | SETSCL_BIT, addr);
194 cx18_write_reg(cx, r & ~SETSCL_BIT, addr);
197 static void cx18_setsda(void *data, int state)
199 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
200 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
201 u32 addr = bus_index ? CX18_REG_I2C_2_WR : CX18_REG_I2C_1_WR;
202 u32 r = cx18_read_reg(cx, addr);
205 cx18_write_reg(cx, r | SETSDL_BIT, addr);
207 cx18_write_reg(cx, r & ~SETSDL_BIT, addr);
210 static int cx18_getscl(void *data)
212 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
213 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
214 u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
216 return cx18_read_reg(cx, addr) & GETSCL_BIT;
219 static int cx18_getsda(void *data)
221 struct cx18 *cx = ((struct cx18_i2c_algo_callback_data *)data)->cx;
222 int bus_index = ((struct cx18_i2c_algo_callback_data *)data)->bus_index;
223 u32 addr = bus_index ? CX18_REG_I2C_2_RD : CX18_REG_I2C_1_RD;
225 return cx18_read_reg(cx, addr) & GETSDL_BIT;
228 /* template for i2c-bit-algo */
229 static struct i2c_adapter cx18_i2c_adap_template = {
230 .name = "cx18 i2c driver",
231 .algo = NULL, /* set by i2c-algo-bit */
232 .algo_data = NULL, /* filled from template */
233 .owner = THIS_MODULE,
236 #define CX18_SCL_PERIOD (10) /* usecs. 10 usec is period for a 100 KHz clock */
237 #define CX18_ALGO_BIT_TIMEOUT (2) /* seconds */
239 static struct i2c_algo_bit_data cx18_i2c_algo_template = {
240 .setsda = cx18_setsda,
241 .setscl = cx18_setscl,
242 .getsda = cx18_getsda,
243 .getscl = cx18_getscl,
244 .udelay = CX18_SCL_PERIOD/2, /* 1/2 clock period in usec*/
245 .timeout = CX18_ALGO_BIT_TIMEOUT*HZ /* jiffies */
248 /* init + register i2c algo-bit adapter */
249 int init_cx18_i2c(struct cx18 *cx)
252 CX18_DEBUG_I2C("i2c init\n");
254 for (i = 0; i < 2; i++) {
255 /* Setup algorithm for adapter */
256 memcpy(&cx->i2c_algo[i], &cx18_i2c_algo_template,
257 sizeof(struct i2c_algo_bit_data));
258 cx->i2c_algo_cb_data[i].cx = cx;
259 cx->i2c_algo_cb_data[i].bus_index = i;
260 cx->i2c_algo[i].data = &cx->i2c_algo_cb_data[i];
263 memcpy(&cx->i2c_adap[i], &cx18_i2c_adap_template,
264 sizeof(struct i2c_adapter));
265 cx->i2c_adap[i].algo_data = &cx->i2c_algo[i];
266 sprintf(cx->i2c_adap[i].name + strlen(cx->i2c_adap[i].name),
267 " #%d-%d", cx->instance, i);
268 i2c_set_adapdata(&cx->i2c_adap[i], &cx->v4l2_dev);
269 cx->i2c_adap[i].dev.parent = &cx->pci_dev->dev;
272 if (cx18_read_reg(cx, CX18_REG_I2C_2_WR) != 0x0003c02f) {
273 /* Reset/Unreset I2C hardware block */
274 /* Clock select 220MHz */
275 cx18_write_reg_expect(cx, 0x10000000, 0xc71004,
276 0x00000000, 0x10001000);
278 cx18_write_reg_expect(cx, 0x10001000, 0xc71024,
279 0x00001000, 0x10001000);
281 /* courtesy of Steven Toth <stoth@hauppauge.com> */
282 cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0);
284 cx18_write_reg_expect(cx, 0x00c000c0, 0xc7001c, 0x000000c0, 0x00c000c0);
286 cx18_write_reg_expect(cx, 0x00c00000, 0xc7001c, 0x00000000, 0x00c000c0);
289 /* Set to edge-triggered intrs. */
290 cx18_write_reg(cx, 0x00c00000, 0xc730c8);
291 /* Clear any stale intrs */
292 cx18_write_reg_expect(cx, HW2_I2C1_INT|HW2_I2C2_INT, HW2_INT_CLR_STATUS,
293 ~(HW2_I2C1_INT|HW2_I2C2_INT), HW2_I2C1_INT|HW2_I2C2_INT);
295 /* Hw I2C1 Clock Freq ~100kHz */
296 cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_1_WR);
297 cx18_setscl(&cx->i2c_algo_cb_data[0], 1);
298 cx18_setsda(&cx->i2c_algo_cb_data[0], 1);
300 /* Hw I2C2 Clock Freq ~100kHz */
301 cx18_write_reg(cx, 0x00021c0f & ~4, CX18_REG_I2C_2_WR);
302 cx18_setscl(&cx->i2c_algo_cb_data[1], 1);
303 cx18_setsda(&cx->i2c_algo_cb_data[1], 1);
305 cx18_call_hw(cx, CX18_HW_GPIO_RESET_CTRL,
306 core, reset, (u32) CX18_GPIO_RESET_I2C);
308 err = i2c_bit_add_bus(&cx->i2c_adap[0]);
311 err = i2c_bit_add_bus(&cx->i2c_adap[1]);
317 i2c_del_adapter(&cx->i2c_adap[0]);
322 void exit_cx18_i2c(struct cx18 *cx)
325 CX18_DEBUG_I2C("i2c exit\n");
326 cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_1_WR) | 4,
328 cx18_write_reg(cx, cx18_read_reg(cx, CX18_REG_I2C_2_WR) | 4,
331 for (i = 0; i < 2; i++) {
332 i2c_del_adapter(&cx->i2c_adap[i]);
337 Hauppauge HVR1600 should have: