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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [bttv-if.c] - Blame information for rev 1774

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/*
    bttv-if.c  --  interfaces to other kernel modules
        all the i2c code is here
        also the gpio interface exported by bttv (used by lirc)
 
    bttv - Bt848 frame grabber driver
 
    Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
                           & Marcus Metzler (mocm@thp.uni-koeln.de)
    (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
*/
 
#include <linux/module.h>
#include <linux/init.h>
 
#include <asm/io.h>
 
#include "bttvp.h"
 
static struct i2c_algo_bit_data bttv_i2c_algo_template;
static struct i2c_adapter bttv_i2c_adap_template;
static struct i2c_client bttv_i2c_client_template;
 
EXPORT_SYMBOL(bttv_get_cardinfo);
EXPORT_SYMBOL(bttv_get_pcidev);
EXPORT_SYMBOL(bttv_get_id);
EXPORT_SYMBOL(bttv_gpio_enable);
EXPORT_SYMBOL(bttv_read_gpio);
EXPORT_SYMBOL(bttv_write_gpio);
EXPORT_SYMBOL(bttv_get_gpio_queue);
EXPORT_SYMBOL(bttv_i2c_call);
 
/* ----------------------------------------------------------------------- */
/* Exported functions - for other modules which want to access the         */
/*                      gpio ports (IR for example)                        */
/*                      see bttv.h for comments                            */
 
int bttv_get_cardinfo(unsigned int card, int *type, unsigned *cardid)
{
        if (card >= bttv_num) {
                return -1;
        }
        *type   = bttvs[card].type;
        *cardid = bttvs[card].cardid;
        return 0;
}
 
struct pci_dev* bttv_get_pcidev(unsigned int card)
{
        if (card >= bttv_num)
                return NULL;
        return bttvs[card].dev;
}
 
int bttv_get_id(unsigned int card)
{
        printk("bttv_get_id is obsolete, use bttv_get_cardinfo instead\n");
        if (card >= bttv_num) {
                return -1;
        }
        return bttvs[card].type;
}
 
int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
{
        struct bttv *btv;
 
        if (card >= bttv_num) {
                return -EINVAL;
        }
 
        btv = &bttvs[card];
        btaor(data, ~mask, BT848_GPIO_OUT_EN);
        if (bttv_gpio)
                bttv_gpio_tracking(btv,"extern enable");
        return 0;
}
 
int bttv_read_gpio(unsigned int card, unsigned long *data)
{
        struct bttv *btv;
 
        if (card >= bttv_num) {
                return -EINVAL;
        }
 
        btv = &bttvs[card];
 
        if(btv->shutdown) {
                return -ENODEV;
        }
 
/* prior setting BT848_GPIO_REG_INP is (probably) not needed
   because we set direct input on init */
        *data = btread(BT848_GPIO_DATA);
        return 0;
}
 
int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
{
        struct bttv *btv;
 
        if (card >= bttv_num) {
                return -EINVAL;
        }
 
        btv = &bttvs[card];
 
/* prior setting BT848_GPIO_REG_INP is (probably) not needed
   because direct input is set on init */
        btaor(data & mask, ~mask, BT848_GPIO_DATA);
        if (bttv_gpio)
                bttv_gpio_tracking(btv,"extern write");
        return 0;
}
 
wait_queue_head_t* bttv_get_gpio_queue(unsigned int card)
{
        struct bttv *btv;
 
        if (card >= bttv_num) {
                return NULL;
        }
 
        btv = &bttvs[card];
        if (bttvs[card].shutdown) {
                return NULL;
        }
        return &btv->gpioq;
}
 
 
/* ----------------------------------------------------------------------- */
/* I2C functions                                                           */
 
void bttv_bit_setscl(void *data, int state)
{
        struct bttv *btv = (struct bttv*)data;
 
        if (state)
                btv->i2c_state |= 0x02;
        else
                btv->i2c_state &= ~0x02;
        btwrite(btv->i2c_state, BT848_I2C);
        btread(BT848_I2C);
}
 
void bttv_bit_setsda(void *data, int state)
{
        struct bttv *btv = (struct bttv*)data;
 
        if (state)
                btv->i2c_state |= 0x01;
        else
                btv->i2c_state &= ~0x01;
        btwrite(btv->i2c_state, BT848_I2C);
        btread(BT848_I2C);
}
 
static int bttv_bit_getscl(void *data)
{
        struct bttv *btv = (struct bttv*)data;
        int state;
 
        state = btread(BT848_I2C) & 0x02 ? 1 : 0;
        return state;
}
 
static int bttv_bit_getsda(void *data)
{
        struct bttv *btv = (struct bttv*)data;
        int state;
 
        state = btread(BT848_I2C) & 0x01;
        return state;
}
 
#ifndef I2C_PEC
static void bttv_inc_use(struct i2c_adapter *adap)
{
        MOD_INC_USE_COUNT;
}
 
static void bttv_dec_use(struct i2c_adapter *adap)
{
        MOD_DEC_USE_COUNT;
}
#endif
 
static int attach_inform(struct i2c_client *client)
{
        struct bttv *btv = i2c_get_adapdata(client->adapter);
 
        if (btv->tuner_type != UNSET)
                bttv_call_i2c_clients(btv,TUNER_SET_TYPE,&btv->tuner_type);
        if (btv->pinnacle_id != UNSET)
                bttv_call_i2c_clients(btv,AUDC_CONFIG_PINNACLE,
                                      &btv->pinnacle_id);
 
        if (bttv_debug)
                printk("bttv%d: i2c attach [client=%s]\n",
                       btv->nr, i2c_clientname(client));
        return 0;
}
 
void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg)
{
        if (0 != btv->i2c_rc)
                return;
        i2c_clients_command(&btv->i2c_adap, cmd, arg);
}
 
void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg)
{
        if (card >= bttv_num)
                return;
        bttv_call_i2c_clients(&bttvs[card], cmd, arg);
}
 
static struct i2c_algo_bit_data bttv_i2c_algo_template = {
        .setsda  = bttv_bit_setsda,
        .setscl  = bttv_bit_setscl,
        .getsda  = bttv_bit_getsda,
        .getscl  = bttv_bit_getscl,
        .udelay  = 16,
        .mdelay  = 10,
        .timeout = 200,
};
 
static struct i2c_adapter bttv_i2c_adap_template = {
#ifdef I2C_PEC
        .owner             = THIS_MODULE,
#else
        .inc_use           = bttv_inc_use,
        .dec_use           = bttv_dec_use,
#endif
#ifdef I2C_ADAP_CLASS_TV_ANALOG
        .class             = I2C_ADAP_CLASS_TV_ANALOG,
#endif
        I2C_DEVNAME("bt848"),
        .id                = I2C_HW_B_BT848,
        .client_register   = attach_inform,
};
 
static struct i2c_client bttv_i2c_client_template = {
        I2C_DEVNAME("bttv internal"),
        .id       = -1,
};
 
 
/* read I2C */
int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for)
{
        unsigned char buffer = 0;
 
        if (0 != btv->i2c_rc)
                return -1;
        if (bttv_verbose && NULL != probe_for)
                printk(KERN_INFO "bttv%d: i2c: checking for %s @ 0x%02x... ",
                       btv->nr,probe_for,addr);
        btv->i2c_client.addr = addr >> 1;
        if (1 != i2c_master_recv(&btv->i2c_client, &buffer, 1)) {
                if (NULL != probe_for) {
                        if (bttv_verbose)
                                printk("not found\n");
                } else
                        printk(KERN_WARNING "bttv%d: i2c read 0x%x: error\n",
                               btv->nr,addr);
                return -1;
        }
        if (bttv_verbose && NULL != probe_for)
                printk("found\n");
        return buffer;
}
 
/* write I2C */
int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,
                    unsigned char b2, int both)
{
        unsigned char buffer[2];
        int bytes = both ? 2 : 1;
 
        if (0 != btv->i2c_rc)
                return -1;
        btv->i2c_client.addr = addr >> 1;
        buffer[0] = b1;
        buffer[1] = b2;
        if (bytes != i2c_master_send(&btv->i2c_client, buffer, bytes))
                return -1;
        return 0;
}
 
/* read EEPROM content */
void __devinit bttv_readee(struct bttv *btv, unsigned char *eedata, int addr)
{
        int i;
 
        if (bttv_I2CWrite(btv, addr, 0, -1, 0)<0) {
                printk(KERN_WARNING "bttv: readee error\n");
                return;
        }
        btv->i2c_client.addr = addr >> 1;
        for (i=0; i<256; i+=16) {
                if (16 != i2c_master_recv(&btv->i2c_client,eedata+i,16)) {
                        printk(KERN_WARNING "bttv: readee error\n");
                        break;
                }
        }
}
 
/* init + register i2c algo-bit adapter */
int __devinit init_bttv_i2c(struct bttv *btv)
{
        memcpy(&btv->i2c_adap, &bttv_i2c_adap_template,
               sizeof(struct i2c_adapter));
        memcpy(&btv->i2c_algo, &bttv_i2c_algo_template,
               sizeof(struct i2c_algo_bit_data));
        memcpy(&btv->i2c_client, &bttv_i2c_client_template,
               sizeof(struct i2c_client));
 
        sprintf(btv->i2c_adap.name, "bt848 #%d", btv->nr);
 
        btv->i2c_algo.data = btv;
        i2c_set_adapdata(&btv->i2c_adap, btv);
        btv->i2c_adap.algo_data = &btv->i2c_algo;
        btv->i2c_client.adapter = &btv->i2c_adap;
 
        bttv_bit_setscl(btv,1);
        bttv_bit_setsda(btv,1);
 
        btv->i2c_rc = i2c_bit_add_bus(&btv->i2c_adap);
        return btv->i2c_rc;
}
 
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [media/] [video/] [bttv-if.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`bttv-if.c -- interfaces to other kernel modules`
3			`all the i2c code is here`
4			`also the gpio interface exported by bttv (used by lirc)`
5
6			`bttv - Bt848 frame grabber driver`
7
8			`Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)`
9			`& Marcus Metzler (mocm@thp.uni-koeln.de)`
10			`(c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>`
11
12			`This program is free software; you can redistribute it and/or modify`
13			`it under the terms of the GNU General Public License as published by`
14			`the Free Software Foundation; either version 2 of the License, or`
15			`(at your option) any later version.`
16
17			`This program is distributed in the hope that it will be useful,`
18			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
19			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
20			`GNU General Public License for more details.`
21
22			`You should have received a copy of the GNU General Public License`
23			`along with this program; if not, write to the Free Software`
24			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
25
26			`*/`
27
28			`#include <linux/module.h>`
29			`#include <linux/init.h>`
30
31			`#include <asm/io.h>`
32
33			`#include "bttvp.h"`
34
35			`static struct i2c_algo_bit_data bttv_i2c_algo_template;`
36			`static struct i2c_adapter bttv_i2c_adap_template;`
37			`static struct i2c_client bttv_i2c_client_template;`
38
39			`EXPORT_SYMBOL(bttv_get_cardinfo);`
40			`EXPORT_SYMBOL(bttv_get_pcidev);`
41			`EXPORT_SYMBOL(bttv_get_id);`
42			`EXPORT_SYMBOL(bttv_gpio_enable);`
43			`EXPORT_SYMBOL(bttv_read_gpio);`
44			`EXPORT_SYMBOL(bttv_write_gpio);`
45			`EXPORT_SYMBOL(bttv_get_gpio_queue);`
46			`EXPORT_SYMBOL(bttv_i2c_call);`
47
48			`/* ----------------------------------------------------------------------- */`
49			`/* Exported functions - for other modules which want to access the */`
50			`/* gpio ports (IR for example) */`
51			`/* see bttv.h for comments */`
52
53			`int bttv_get_cardinfo(unsigned int card, int type, unsigned cardid)`
54			`{`
55			`if (card >= bttv_num) {`
56			`return -1;`
57			`}`
58			`*type = bttvs[card].type;`
59			`*cardid = bttvs[card].cardid;`
60			`return 0;`
61			`}`
62
63			`struct pci_dev* bttv_get_pcidev(unsigned int card)`
64			`{`
65			`if (card >= bttv_num)`
66			`return NULL;`
67			`return bttvs[card].dev;`
68			`}`
69
70			`int bttv_get_id(unsigned int card)`
71			`{`
72			`printk("bttv_get_id is obsolete, use bttv_get_cardinfo instead\n");`
73			`if (card >= bttv_num) {`
74			`return -1;`
75			`}`
76			`return bttvs[card].type;`
77			`}`
78
79			`int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)`
80			`{`
81			`struct bttv *btv;`
82
83			`if (card >= bttv_num) {`
84			`return -EINVAL;`
85			`}`
86
87			`btv = &bttvs[card];`
88			`btaor(data, ~mask, BT848_GPIO_OUT_EN);`
89			`if (bttv_gpio)`
90			`bttv_gpio_tracking(btv,"extern enable");`
91			`return 0;`
92			`}`
93
94			`int bttv_read_gpio(unsigned int card, unsigned long *data)`
95			`{`
96			`struct bttv *btv;`
97
98			`if (card >= bttv_num) {`
99			`return -EINVAL;`
100			`}`
101
102			`btv = &bttvs[card];`
103
104			`if(btv->shutdown) {`
105			`return -ENODEV;`
106			`}`
107
108			`/* prior setting BT848_GPIO_REG_INP is (probably) not needed`
109			`because we set direct input on init */`
110			`*data = btread(BT848_GPIO_DATA);`
111			`return 0;`
112			`}`
113
114			`int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)`
115			`{`
116			`struct bttv *btv;`
117
118			`if (card >= bttv_num) {`
119			`return -EINVAL;`
120			`}`
121
122			`btv = &bttvs[card];`
123
124			`/* prior setting BT848_GPIO_REG_INP is (probably) not needed`
125			`because direct input is set on init */`
126			`btaor(data & mask, ~mask, BT848_GPIO_DATA);`
127			`if (bttv_gpio)`
128			`bttv_gpio_tracking(btv,"extern write");`
129			`return 0;`
130			`}`
131
132			`wait_queue_head_t* bttv_get_gpio_queue(unsigned int card)`
133			`{`
134			`struct bttv *btv;`
135
136			`if (card >= bttv_num) {`
137			`return NULL;`
138			`}`
139
140			`btv = &bttvs[card];`
141			`if (bttvs[card].shutdown) {`
142			`return NULL;`
143			`}`
144			`return &btv->gpioq;`
145			`}`
146
147
148			`/* ----------------------------------------------------------------------- */`
149			`/* I2C functions */`
150
151			`void bttv_bit_setscl(void *data, int state)`
152			`{`
153			`struct bttv btv = (struct bttv)data;`
154
155			`if (state)`
156			`btv->i2c_state \|= 0x02;`
157			`else`
158			`btv->i2c_state &= ~0x02;`
159			`btwrite(btv->i2c_state, BT848_I2C);`
160			`btread(BT848_I2C);`
161			`}`
162
163			`void bttv_bit_setsda(void *data, int state)`
164			`{`
165			`struct bttv btv = (struct bttv)data;`
166
167			`if (state)`
168			`btv->i2c_state \|= 0x01;`
169			`else`
170			`btv->i2c_state &= ~0x01;`
171			`btwrite(btv->i2c_state, BT848_I2C);`
172			`btread(BT848_I2C);`
173			`}`
174
175			`static int bttv_bit_getscl(void *data)`
176			`{`
177			`struct bttv btv = (struct bttv)data;`
178			`int state;`
179
180			`state = btread(BT848_I2C) & 0x02 ? 1 : 0;`
181			`return state;`
182			`}`
183
184			`static int bttv_bit_getsda(void *data)`
185			`{`
186			`struct bttv btv = (struct bttv)data;`
187			`int state;`
188
189			`state = btread(BT848_I2C) & 0x01;`
190			`return state;`
191			`}`
192
193			`#ifndef I2C_PEC`
194			`static void bttv_inc_use(struct i2c_adapter *adap)`
195			`{`
196			`MOD_INC_USE_COUNT;`
197			`}`
198
199			`static void bttv_dec_use(struct i2c_adapter *adap)`
200			`{`
201			`MOD_DEC_USE_COUNT;`
202			`}`
203			`#endif`
204
205			`static int attach_inform(struct i2c_client *client)`
206			`{`
207			`struct bttv *btv = i2c_get_adapdata(client->adapter);`
208
209			`if (btv->tuner_type != UNSET)`
210			`bttv_call_i2c_clients(btv,TUNER_SET_TYPE,&btv->tuner_type);`
211			`if (btv->pinnacle_id != UNSET)`
212			`bttv_call_i2c_clients(btv,AUDC_CONFIG_PINNACLE,`
213			`&btv->pinnacle_id);`
214
215			`if (bttv_debug)`
216			`printk("bttv%d: i2c attach [client=%s]\n",`
217			`btv->nr, i2c_clientname(client));`
218			`return 0;`
219			`}`
220
221			`void bttv_call_i2c_clients(struct bttv btv, unsigned int cmd, void arg)`
222			`{`
223			`if (0 != btv->i2c_rc)`
224			`return;`
225			`i2c_clients_command(&btv->i2c_adap, cmd, arg);`
226			`}`
227
228			`void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg)`
229			`{`
230			`if (card >= bttv_num)`
231			`return;`
232			`bttv_call_i2c_clients(&bttvs[card], cmd, arg);`
233			`}`
234
235			`static struct i2c_algo_bit_data bttv_i2c_algo_template = {`
236			`.setsda = bttv_bit_setsda,`
237			`.setscl = bttv_bit_setscl,`
238			`.getsda = bttv_bit_getsda,`
239			`.getscl = bttv_bit_getscl,`
240			`.udelay = 16,`
241			`.mdelay = 10,`
242			`.timeout = 200,`
243			`};`
244
245			`static struct i2c_adapter bttv_i2c_adap_template = {`
246			`#ifdef I2C_PEC`
247			`.owner = THIS_MODULE,`
248			`#else`
249			`.inc_use = bttv_inc_use,`
250			`.dec_use = bttv_dec_use,`
251			`#endif`
252			`#ifdef I2C_ADAP_CLASS_TV_ANALOG`
253			`.class = I2C_ADAP_CLASS_TV_ANALOG,`
254			`#endif`
255			`I2C_DEVNAME("bt848"),`
256			`.id = I2C_HW_B_BT848,`
257			`.client_register = attach_inform,`
258			`};`
259
260			`static struct i2c_client bttv_i2c_client_template = {`
261			`I2C_DEVNAME("bttv internal"),`
262			`.id = -1,`
263			`};`
264
265
266			`/* read I2C */`
267			`int bttv_I2CRead(struct bttv btv, unsigned char addr, char probe_for)`
268			`{`
269			`unsigned char buffer = 0;`
270
271			`if (0 != btv->i2c_rc)`
272			`return -1;`
273			`if (bttv_verbose && NULL != probe_for)`
274			`printk(KERN_INFO "bttv%d: i2c: checking for %s @ 0x%02x... ",`
275			`btv->nr,probe_for,addr);`
276			`btv->i2c_client.addr = addr >> 1;`
277			`if (1 != i2c_master_recv(&btv->i2c_client, &buffer, 1)) {`
278			`if (NULL != probe_for) {`
279			`if (bttv_verbose)`
280			`printk("not found\n");`
281			`} else`
282			`printk(KERN_WARNING "bttv%d: i2c read 0x%x: error\n",`
283			`btv->nr,addr);`
284			`return -1;`
285			`}`
286			`if (bttv_verbose && NULL != probe_for)`
287			`printk("found\n");`
288			`return buffer;`
289			`}`
290
291			`/* write I2C */`
292			`int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,`
293			`unsigned char b2, int both)`
294			`{`
295			`unsigned char buffer[2];`
296			`int bytes = both ? 2 : 1;`
297
298			`if (0 != btv->i2c_rc)`
299			`return -1;`
300			`btv->i2c_client.addr = addr >> 1;`
301			`buffer[0] = b1;`
302			`buffer[1] = b2;`
303			`if (bytes != i2c_master_send(&btv->i2c_client, buffer, bytes))`
304			`return -1;`
305			`return 0;`
306			`}`
307
308			`/* read EEPROM content */`
309			`void __devinit bttv_readee(struct bttv btv, unsigned char eedata, int addr)`
310			`{`
311			`int i;`
312
313			`if (bttv_I2CWrite(btv, addr, 0, -1, 0)<0) {`
314			`printk(KERN_WARNING "bttv: readee error\n");`
315			`return;`
316			`}`
317			`btv->i2c_client.addr = addr >> 1;`
318			`for (i=0; i<256; i+=16) {`
319			`if (16 != i2c_master_recv(&btv->i2c_client,eedata+i,16)) {`
320			`printk(KERN_WARNING "bttv: readee error\n");`
321			`break;`
322			`}`
323			`}`
324			`}`
325
326			`/* init + register i2c algo-bit adapter */`
327			`int __devinit init_bttv_i2c(struct bttv *btv)`
328			`{`
329			`memcpy(&btv->i2c_adap, &bttv_i2c_adap_template,`
330			`sizeof(struct i2c_adapter));`
331			`memcpy(&btv->i2c_algo, &bttv_i2c_algo_template,`
332			`sizeof(struct i2c_algo_bit_data));`
333			`memcpy(&btv->i2c_client, &bttv_i2c_client_template,`
334			`sizeof(struct i2c_client));`
335
336			`sprintf(btv->i2c_adap.name, "bt848 #%d", btv->nr);`
337
338			`btv->i2c_algo.data = btv;`
339			`i2c_set_adapdata(&btv->i2c_adap, btv);`
340			`btv->i2c_adap.algo_data = &btv->i2c_algo;`
341			`btv->i2c_client.adapter = &btv->i2c_adap;`
342
343			`bttv_bit_setscl(btv,1);`
344			`bttv_bit_setsda(btv,1);`
345
346			`btv->i2c_rc = i2c_bit_add_bus(&btv->i2c_adap);`
347			`return btv->i2c_rc;`
348			`}`
349
350			`/*`
351			`* Local variables:`
352			`* c-basic-offset: 8`
353			`* End:`
354			`*/`