forked from Minki/linux
aecde8b53b
Since the i2c driver ID will be removed in the near future we have to modify the v4l2 debugging API to use the driver name instead of driver ID. Note that this API is not used in applications other than v4l2-dbg.cpp as it is for debugging and testing only. Should anyone use the old VIDIOC_G_CHIP_IDENT, then this will be logged with a warning that it is deprecated and will be removed in 2.6.30. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
277 lines
7.7 KiB
C
277 lines
7.7 KiB
C
/*
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* upd64031A - NEC Electronics Ghost Reduction for NTSC in Japan
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*
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* 2003 by T.Adachi <tadachi@tadachi-net.com>
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* 2003 by Takeru KOMORIYA <komoriya@paken.org>
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* 2006 by Hans Verkuil <hverkuil@xs4all.nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/i2c.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/v4l2-i2c-drv.h>
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#include <media/upd64031a.h>
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/* --------------------- read registers functions define -------------------- */
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/* bit masks */
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#define GR_MODE_MASK 0xc0
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#define DIRECT_3DYCS_CONNECT_MASK 0xc0
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#define SYNC_CIRCUIT_MASK 0xa0
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/* -------------------------------------------------------------------------- */
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MODULE_DESCRIPTION("uPD64031A driver");
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MODULE_AUTHOR("T. Adachi, Takeru KOMORIYA, Hans Verkuil");
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MODULE_LICENSE("GPL");
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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enum {
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R00 = 0, R01, R02, R03, R04,
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R05, R06, R07, R08, R09,
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R0A, R0B, R0C, R0D, R0E, R0F,
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/* unused registers
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R10, R11, R12, R13, R14,
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R15, R16, R17,
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*/
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TOT_REGS
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};
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struct upd64031a_state {
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struct v4l2_subdev sd;
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u8 regs[TOT_REGS];
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u8 gr_mode;
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u8 direct_3dycs_connect;
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u8 ext_comp_sync;
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u8 ext_vert_sync;
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};
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static inline struct upd64031a_state *to_state(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct upd64031a_state, sd);
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}
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static u8 upd64031a_init[] = {
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0x00, 0xb8, 0x48, 0xd2, 0xe6,
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0x03, 0x10, 0x0b, 0xaf, 0x7f,
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0x00, 0x00, 0x1d, 0x5e, 0x00,
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0xd0
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};
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/* ------------------------------------------------------------------------ */
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static u8 upd64031a_read(struct v4l2_subdev *sd, u8 reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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u8 buf[2];
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if (reg >= sizeof(buf))
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return 0xff;
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i2c_master_recv(client, buf, 2);
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return buf[reg];
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}
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/* ------------------------------------------------------------------------ */
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static void upd64031a_write(struct v4l2_subdev *sd, u8 reg, u8 val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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u8 buf[2];
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buf[0] = reg;
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buf[1] = val;
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v4l2_dbg(1, debug, sd, "write reg: %02X val: %02X\n", reg, val);
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if (i2c_master_send(client, buf, 2) != 2)
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v4l2_err(sd, "I/O error write 0x%02x/0x%02x\n", reg, val);
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}
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/* ------------------------------------------------------------------------ */
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/* The input changed due to new input or channel changed */
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static int upd64031a_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *freq)
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{
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struct upd64031a_state *state = to_state(sd);
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u8 reg = state->regs[R00];
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v4l2_dbg(1, debug, sd, "changed input or channel\n");
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upd64031a_write(sd, R00, reg | 0x10);
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upd64031a_write(sd, R00, reg & ~0x10);
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return 0;
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}
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/* ------------------------------------------------------------------------ */
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static int upd64031a_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
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{
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struct upd64031a_state *state = to_state(sd);
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u8 r00, r05, r08;
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state->gr_mode = (route->input & 3) << 6;
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state->direct_3dycs_connect = (route->input & 0xc) << 4;
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state->ext_comp_sync =
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(route->input & UPD64031A_COMPOSITE_EXTERNAL) << 1;
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state->ext_vert_sync =
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(route->input & UPD64031A_VERTICAL_EXTERNAL) << 2;
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r00 = (state->regs[R00] & ~GR_MODE_MASK) | state->gr_mode;
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r05 = (state->regs[R00] & ~SYNC_CIRCUIT_MASK) |
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state->ext_comp_sync | state->ext_vert_sync;
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r08 = (state->regs[R08] & ~DIRECT_3DYCS_CONNECT_MASK) |
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state->direct_3dycs_connect;
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upd64031a_write(sd, R00, r00);
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upd64031a_write(sd, R05, r05);
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upd64031a_write(sd, R08, r08);
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return upd64031a_s_frequency(sd, NULL);
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}
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static int upd64031a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_UPD64031A, 0);
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}
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static int upd64031a_log_status(struct v4l2_subdev *sd)
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{
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v4l2_info(sd, "Status: SA00=0x%02x SA01=0x%02x\n",
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upd64031a_read(sd, 0), upd64031a_read(sd, 1));
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return 0;
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}
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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static int upd64031a_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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if (!v4l2_chip_match_i2c_client(client, ®->match))
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return -EINVAL;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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reg->val = upd64031a_read(sd, reg->reg & 0xff);
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reg->size = 1;
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return 0;
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}
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static int upd64031a_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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if (!v4l2_chip_match_i2c_client(client, ®->match))
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return -EINVAL;
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if (!capable(CAP_SYS_ADMIN))
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return -EPERM;
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upd64031a_write(sd, reg->reg & 0xff, reg->val & 0xff);
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return 0;
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}
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#endif
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static int upd64031a_command(struct i2c_client *client, unsigned cmd, void *arg)
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{
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return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
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}
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/* ----------------------------------------------------------------------- */
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static const struct v4l2_subdev_core_ops upd64031a_core_ops = {
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.log_status = upd64031a_log_status,
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.g_chip_ident = upd64031a_g_chip_ident,
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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.g_register = upd64031a_g_register,
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.s_register = upd64031a_s_register,
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#endif
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};
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static const struct v4l2_subdev_tuner_ops upd64031a_tuner_ops = {
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.s_frequency = upd64031a_s_frequency,
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};
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static const struct v4l2_subdev_video_ops upd64031a_video_ops = {
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.s_routing = upd64031a_s_routing,
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};
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static const struct v4l2_subdev_ops upd64031a_ops = {
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.core = &upd64031a_core_ops,
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.tuner = &upd64031a_tuner_ops,
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.video = &upd64031a_video_ops,
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};
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/* ------------------------------------------------------------------------ */
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/* i2c implementation */
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static int upd64031a_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct upd64031a_state *state;
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struct v4l2_subdev *sd;
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int i;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
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return -EIO;
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v4l_info(client, "chip found @ 0x%x (%s)\n",
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client->addr << 1, client->adapter->name);
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state = kmalloc(sizeof(struct upd64031a_state), GFP_KERNEL);
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if (state == NULL)
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return -ENOMEM;
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sd = &state->sd;
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v4l2_i2c_subdev_init(sd, client, &upd64031a_ops);
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memcpy(state->regs, upd64031a_init, sizeof(state->regs));
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state->gr_mode = UPD64031A_GR_ON << 6;
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state->direct_3dycs_connect = UPD64031A_3DYCS_COMPOSITE << 4;
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state->ext_comp_sync = state->ext_vert_sync = 0;
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for (i = 0; i < TOT_REGS; i++)
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upd64031a_write(sd, i, state->regs[i]);
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return 0;
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}
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static int upd64031a_remove(struct i2c_client *client)
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{
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struct v4l2_subdev *sd = i2c_get_clientdata(client);
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v4l2_device_unregister_subdev(sd);
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kfree(to_state(sd));
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return 0;
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}
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/* ----------------------------------------------------------------------- */
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static const struct i2c_device_id upd64031a_id[] = {
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{ "upd64031a", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, upd64031a_id);
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static struct v4l2_i2c_driver_data v4l2_i2c_data = {
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.name = "upd64031a",
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.driverid = I2C_DRIVERID_UPD64031A,
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.command = upd64031a_command,
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.probe = upd64031a_probe,
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.remove = upd64031a_remove,
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.id_table = upd64031a_id,
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};
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