2 * Driver for the Conexant CX23885/7/8 PCIe bridge
4 * Various common ioctl() support functions
6 * Copyright (c) 2009 Andy Walls <awalls@md.metrocast.net>
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.
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
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., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include <media/v4l2-chip-ident.h>
27 int cx23885_g_chip_ident(struct file
*file
, void *fh
,
28 struct v4l2_dbg_chip_ident
*chip
)
30 struct cx23885_dev
*dev
= ((struct cx23885_fh
*)fh
)->dev
;
34 chip
->ident
= V4L2_IDENT_NONE
;
36 switch (chip
->match
.type
) {
37 case V4L2_CHIP_MATCH_HOST
:
38 switch (chip
->match
.addr
) {
40 rev
= cx_read(RDR_CFG2
) & 0xff;
41 switch (dev
->pci
->device
) {
43 /* rev 0x04 could be '885 or '888. Pick '888. */
45 chip
->ident
= V4L2_IDENT_CX23888
;
47 chip
->ident
= V4L2_IDENT_CX23885
;
50 if (rev
== 0x0e || rev
== 0x0f)
51 chip
->ident
= V4L2_IDENT_CX23887
;
53 chip
->ident
= V4L2_IDENT_CX23888
;
56 chip
->ident
= V4L2_IDENT_UNKNOWN
;
59 chip
->revision
= (dev
->pci
->device
<< 16) | (rev
<< 8) |
60 (dev
->hwrevision
& 0xff);
63 if (dev
->v4l_device
!= NULL
) {
64 chip
->ident
= V4L2_IDENT_CX23417
;
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.
76 call_hw(dev
, CX23885_HW_888_IR
, core
, g_chip_ident
,
80 err
= -EINVAL
; /* per V4L2 spec */
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
);
88 case V4L2_CHIP_MATCH_I2C_ADDR
:
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.
94 call_all(dev
, core
, g_chip_ident
, chip
);
103 #ifdef CONFIG_VIDEO_ADV_DEBUG
104 static int cx23885_g_host_register(struct cx23885_dev
*dev
,
105 struct v4l2_dbg_register
*reg
)
107 if ((reg
->reg
& 0x3) != 0 || reg
->reg
>= pci_resource_len(dev
->pci
, 0))
111 reg
->val
= cx_read(reg
->reg
);
115 static int cx23417_g_register(struct cx23885_dev
*dev
,
116 struct v4l2_dbg_register
*reg
)
120 if (dev
->v4l_device
== NULL
)
123 if ((reg
->reg
& 0x3) != 0 || reg
->reg
>= 0x10000)
126 if (mc417_register_read(dev
, (u16
) reg
->reg
, &value
))
127 return -EINVAL
; /* V4L2 spec, but -EREMOTEIO really */
134 int cx23885_g_register(struct file
*file
, void *fh
,
135 struct v4l2_dbg_register
*reg
)
137 struct cx23885_dev
*dev
= ((struct cx23885_fh
*)fh
)->dev
;
139 if (!capable(CAP_SYS_ADMIN
))
142 if (reg
->match
.type
== V4L2_CHIP_MATCH_HOST
) {
143 switch (reg
->match
.addr
) {
145 return cx23885_g_host_register(dev
, reg
);
147 return cx23417_g_register(dev
, reg
);
153 /* FIXME - any error returns should not be ignored */
154 call_all(dev
, core
, g_register
, reg
);
158 static int cx23885_s_host_register(struct cx23885_dev
*dev
,
159 struct v4l2_dbg_register
*reg
)
161 if ((reg
->reg
& 0x3) != 0 || reg
->reg
>= pci_resource_len(dev
->pci
, 0))
165 cx_write(reg
->reg
, reg
->val
);
169 static int cx23417_s_register(struct cx23885_dev
*dev
,
170 struct v4l2_dbg_register
*reg
)
172 if (dev
->v4l_device
== NULL
)
175 if ((reg
->reg
& 0x3) != 0 || reg
->reg
>= 0x10000)
178 if (mc417_register_write(dev
, (u16
) reg
->reg
, (u32
) reg
->val
))
179 return -EINVAL
; /* V4L2 spec, but -EREMOTEIO really */
185 int cx23885_s_register(struct file
*file
, void *fh
,
186 struct v4l2_dbg_register
*reg
)
188 struct cx23885_dev
*dev
= ((struct cx23885_fh
*)fh
)->dev
;
190 if (!capable(CAP_SYS_ADMIN
))
193 if (reg
->match
.type
== V4L2_CHIP_MATCH_HOST
) {
194 switch (reg
->match
.addr
) {
196 return cx23885_s_host_register(dev
, reg
);
198 return cx23417_s_register(dev
, reg
);
204 /* FIXME - any error returns should not be ignored */
205 call_all(dev
, core
, s_register
, reg
);