diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 11:13:30 -0400 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 15:36:22 -0400 |
commit | b285192a43f0432d82c2c10974204e78af0da596 (patch) | |
tree | 618aa87e760c9c949eca9e4df6ae0eeffa11dcfc /drivers/media/pci/saa7164/saa7164-i2c.c | |
parent | 68de959f773a1d49096835c411390bceff5d1549 (diff) |
[media] rename most media/video pci drivers to media/pci
Rename all PCI drivers with their own directory under
drivers/media/video into drivers/media/pci and update the
building system.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/pci/saa7164/saa7164-i2c.c')
-rw-r--r-- | drivers/media/pci/saa7164/saa7164-i2c.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/media/pci/saa7164/saa7164-i2c.c b/drivers/media/pci/saa7164/saa7164-i2c.c new file mode 100644 index 000000000000..4f7e3b42263f --- /dev/null +++ b/drivers/media/pci/saa7164/saa7164-i2c.c | |||
@@ -0,0 +1,125 @@ | |||
1 | /* | ||
2 | * Driver for the NXP SAA7164 PCIe bridge | ||
3 | * | ||
4 | * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation; either version 2 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * This program is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program; if not, write to the Free Software | ||
19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
20 | */ | ||
21 | |||
22 | #include <linux/module.h> | ||
23 | #include <linux/moduleparam.h> | ||
24 | #include <linux/init.h> | ||
25 | #include <linux/delay.h> | ||
26 | #include <linux/io.h> | ||
27 | |||
28 | #include "saa7164.h" | ||
29 | |||
30 | static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) | ||
31 | { | ||
32 | struct saa7164_i2c *bus = i2c_adap->algo_data; | ||
33 | struct saa7164_dev *dev = bus->dev; | ||
34 | int i, retval = 0; | ||
35 | |||
36 | dprintk(DBGLVL_I2C, "%s(num = %d)\n", __func__, num); | ||
37 | |||
38 | for (i = 0 ; i < num; i++) { | ||
39 | dprintk(DBGLVL_I2C, "%s(num = %d) addr = 0x%02x len = 0x%x\n", | ||
40 | __func__, num, msgs[i].addr, msgs[i].len); | ||
41 | if (msgs[i].flags & I2C_M_RD) { | ||
42 | /* Unsupported - Yet*/ | ||
43 | printk(KERN_ERR "%s() Unsupported - Yet\n", __func__); | ||
44 | continue; | ||
45 | } else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) && | ||
46 | msgs[i].addr == msgs[i + 1].addr) { | ||
47 | /* write then read from same address */ | ||
48 | |||
49 | retval = saa7164_api_i2c_read(bus, msgs[i].addr, | ||
50 | msgs[i].len, msgs[i].buf, | ||
51 | msgs[i+1].len, msgs[i+1].buf | ||
52 | ); | ||
53 | |||
54 | i++; | ||
55 | |||
56 | if (retval < 0) | ||
57 | goto err; | ||
58 | } else { | ||
59 | /* write */ | ||
60 | retval = saa7164_api_i2c_write(bus, msgs[i].addr, | ||
61 | msgs[i].len, msgs[i].buf); | ||
62 | } | ||
63 | if (retval < 0) | ||
64 | goto err; | ||
65 | } | ||
66 | return num; | ||
67 | |||
68 | err: | ||
69 | return retval; | ||
70 | } | ||
71 | |||
72 | static u32 saa7164_functionality(struct i2c_adapter *adap) | ||
73 | { | ||
74 | return I2C_FUNC_I2C; | ||
75 | } | ||
76 | |||
77 | static struct i2c_algorithm saa7164_i2c_algo_template = { | ||
78 | .master_xfer = i2c_xfer, | ||
79 | .functionality = saa7164_functionality, | ||
80 | }; | ||
81 | |||
82 | /* ----------------------------------------------------------------------- */ | ||
83 | |||
84 | static struct i2c_adapter saa7164_i2c_adap_template = { | ||
85 | .name = "saa7164", | ||
86 | .owner = THIS_MODULE, | ||
87 | .algo = &saa7164_i2c_algo_template, | ||
88 | }; | ||
89 | |||
90 | static struct i2c_client saa7164_i2c_client_template = { | ||
91 | .name = "saa7164 internal", | ||
92 | }; | ||
93 | |||
94 | int saa7164_i2c_register(struct saa7164_i2c *bus) | ||
95 | { | ||
96 | struct saa7164_dev *dev = bus->dev; | ||
97 | |||
98 | dprintk(DBGLVL_I2C, "%s(bus = %d)\n", __func__, bus->nr); | ||
99 | |||
100 | bus->i2c_adap = saa7164_i2c_adap_template; | ||
101 | bus->i2c_client = saa7164_i2c_client_template; | ||
102 | |||
103 | bus->i2c_adap.dev.parent = &dev->pci->dev; | ||
104 | |||
105 | strlcpy(bus->i2c_adap.name, bus->dev->name, | ||
106 | sizeof(bus->i2c_adap.name)); | ||
107 | |||
108 | bus->i2c_adap.algo_data = bus; | ||
109 | i2c_set_adapdata(&bus->i2c_adap, bus); | ||
110 | i2c_add_adapter(&bus->i2c_adap); | ||
111 | |||
112 | bus->i2c_client.adapter = &bus->i2c_adap; | ||
113 | |||
114 | if (0 != bus->i2c_rc) | ||
115 | printk(KERN_ERR "%s: i2c bus %d register FAILED\n", | ||
116 | dev->name, bus->nr); | ||
117 | |||
118 | return bus->i2c_rc; | ||
119 | } | ||
120 | |||
121 | int saa7164_i2c_unregister(struct saa7164_i2c *bus) | ||
122 | { | ||
123 | i2c_del_adapter(&bus->i2c_adap); | ||
124 | return 0; | ||
125 | } | ||