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Diffstat (limited to 'drivers/media/video/cx23885/cx23885-ioctl.c')
-rw-r--r--drivers/media/video/cx23885/cx23885-ioctl.c208
1 files changed, 208 insertions, 0 deletions
diff --git a/drivers/media/video/cx23885/cx23885-ioctl.c b/drivers/media/video/cx23885/cx23885-ioctl.c
new file mode 100644
index 000000000000..dfb4627fb340
--- /dev/null
+++ b/drivers/media/video/cx23885/cx23885-ioctl.c
@@ -0,0 +1,208 @@
1/*
2 * Driver for the Conexant CX23885/7/8 PCIe bridge
3 *
4 * Various common ioctl() support functions
5 *
6 * Copyright (c) 2009 Andy Walls <awalls@radix.net>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 *
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., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24#include "cx23885.h"
25#include <media/v4l2-chip-ident.h>
26
27int cx23885_g_chip_ident(struct file *file, void *fh,
28 struct v4l2_dbg_chip_ident *chip)
29{
30 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
31 int err = 0;
32 u8 rev;
33
34 chip->ident = V4L2_IDENT_NONE;
35 chip->revision = 0;
36 switch (chip->match.type) {
37 case V4L2_CHIP_MATCH_HOST:
38 switch (chip->match.addr) {
39 case 0:
40 rev = cx_read(RDR_CFG2) & 0xff;
41 switch (dev->pci->device) {
42 case 0x8852:
43 /* rev 0x04 could be '885 or '888. Pick '888. */
44 if (rev == 0x04)
45 chip->ident = V4L2_IDENT_CX23888;
46 else
47 chip->ident = V4L2_IDENT_CX23885;
48 break;
49 case 0x8880:
50 if (rev == 0x0e || rev == 0x0f)
51 chip->ident = V4L2_IDENT_CX23887;
52 else
53 chip->ident = V4L2_IDENT_CX23888;
54 break;
55 default:
56 chip->ident = V4L2_IDENT_UNKNOWN;
57 break;
58 }
59 chip->revision = (dev->pci->device << 16) | (rev << 8) |
60 (dev->hwrevision & 0xff);
61 break;
62 case 1:
63 if (dev->v4l_device != NULL) {
64 chip->ident = V4L2_IDENT_CX23417;
65 chip->revision = 0;
66 }
67 break;
68 case 2:
69 /*
70 * The integrated IR controller on the CX23888 is
71 * host chip 2. It may not be used/initialized or sd_ir
72 * may be pointing at the cx25840 subdevice for the
73 * IR controller on the CX23885. Thus we find it
74 * without using the dev->sd_ir pointer.
75 */
76 call_hw(dev, CX23885_HW_888_IR, core, g_chip_ident,
77 chip);
78 break;
79 default:
80 err = -EINVAL; /* per V4L2 spec */
81 break;
82 }
83 break;
84 case V4L2_CHIP_MATCH_I2C_DRIVER:
85 /* If needed, returns V4L2_IDENT_AMBIGUOUS without extra work */
86 call_all(dev, core, g_chip_ident, chip);
87 break;
88 case V4L2_CHIP_MATCH_I2C_ADDR:
89 /*
90 * We could return V4L2_IDENT_UNKNOWN, but we don't do the work
91 * to look if a chip is at the address with no driver. That's a
92 * dangerous thing to do with EEPROMs anyway.
93 */
94 call_all(dev, core, g_chip_ident, chip);
95 break;
96 default:
97 err = -EINVAL;
98 break;
99 }
100 return err;
101}
102
103#ifdef CONFIG_VIDEO_ADV_DEBUG
104static int cx23885_g_host_register(struct cx23885_dev *dev,
105 struct v4l2_dbg_register *reg)
106{
107 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
108 return -EINVAL;
109
110 reg->size = 4;
111 reg->val = cx_read(reg->reg);
112 return 0;
113}
114
115static int cx23417_g_register(struct cx23885_dev *dev,
116 struct v4l2_dbg_register *reg)
117{
118 u32 value;
119
120 if (dev->v4l_device == NULL)
121 return -EINVAL;
122
123 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
124 return -EINVAL;
125
126 if (mc417_register_read(dev, (u16) reg->reg, &value))
127 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
128
129 reg->size = 4;
130 reg->val = value;
131 return 0;
132}
133
134int cx23885_g_register(struct file *file, void *fh,
135 struct v4l2_dbg_register *reg)
136{
137 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
138
139 if (!capable(CAP_SYS_ADMIN))
140 return -EPERM;
141
142 if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
143 switch (reg->match.addr) {
144 case 0:
145 return cx23885_g_host_register(dev, reg);
146 case 1:
147 return cx23417_g_register(dev, reg);
148 default:
149 break;
150 }
151 }
152
153 /* FIXME - any error returns should not be ignored */
154 call_all(dev, core, g_register, reg);
155 return 0;
156}
157
158static int cx23885_s_host_register(struct cx23885_dev *dev,
159 struct v4l2_dbg_register *reg)
160{
161 if ((reg->reg & 0x3) != 0 || reg->reg >= pci_resource_len(dev->pci, 0))
162 return -EINVAL;
163
164 reg->size = 4;
165 cx_write(reg->reg, reg->val);
166 return 0;
167}
168
169static int cx23417_s_register(struct cx23885_dev *dev,
170 struct v4l2_dbg_register *reg)
171{
172 if (dev->v4l_device == NULL)
173 return -EINVAL;
174
175 if ((reg->reg & 0x3) != 0 || reg->reg >= 0x10000)
176 return -EINVAL;
177
178 if (mc417_register_write(dev, (u16) reg->reg, (u32) reg->val))
179 return -EINVAL; /* V4L2 spec, but -EREMOTEIO really */
180
181 reg->size = 4;
182 return 0;
183}
184
185int cx23885_s_register(struct file *file, void *fh,
186 struct v4l2_dbg_register *reg)
187{
188 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
189
190 if (!capable(CAP_SYS_ADMIN))
191 return -EPERM;
192
193 if (reg->match.type == V4L2_CHIP_MATCH_HOST) {
194 switch (reg->match.addr) {
195 case 0:
196 return cx23885_s_host_register(dev, reg);
197 case 1:
198 return cx23417_s_register(dev, reg);
199 default:
200 break;
201 }
202 }
203
204 /* FIXME - any error returns should not be ignored */
205 call_all(dev, core, s_register, reg);
206 return 0;
207}
208#endif
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 07:14:01 -0500