From 866b8695d67e83f47194731d3a7ba55826a7ec70 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 15 Feb 2008 16:53:09 -0800 Subject: Staging: add the go7007 video driver Todo: - checkpatch.pl cleanups - sparse cleanups - lots of little modules, should be merged together and added to the build. - testing? - handle churn in v4l layer. Many thanks to Ross Cohen for cleanup patches on this driver. Cc: Ross Cohen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/go7007/wis-tw2804.c | 381 ++++++++++++++++++++++++++++++++++++ 1 file changed, 381 insertions(+) create mode 100644 drivers/staging/go7007/wis-tw2804.c (limited to 'drivers/staging/go7007/wis-tw2804.c') diff --git a/drivers/staging/go7007/wis-tw2804.c b/drivers/staging/go7007/wis-tw2804.c new file mode 100644 index 00000000000..69ed7bf0322 --- /dev/null +++ b/drivers/staging/go7007/wis-tw2804.c @@ -0,0 +1,381 @@ +/* + * Copyright (C) 2005-2006 Micronas USA Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * 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., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "wis-i2c.h" + +struct wis_tw2804 { + int channel; + int norm; + int brightness; + int contrast; + int saturation; + int hue; +}; + +static u8 global_registers[] = +{ + 0x39, 0x00, + 0x3a, 0xff, + 0x3b, 0x84, + 0x3c, 0x80, + 0x3d, 0x80, + 0x3e, 0x82, + 0x3f, 0x82, + 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ +}; + +static u8 channel_registers[] = +{ + 0x01, 0xc4, + 0x02, 0xa5, + 0x03, 0x20, + 0x04, 0xd0, + 0x05, 0x20, + 0x06, 0xd0, + 0x07, 0x88, + 0x08, 0x20, + 0x09, 0x07, + 0x0a, 0xf0, + 0x0b, 0x07, + 0x0c, 0xf0, + 0x0d, 0x40, + 0x0e, 0xd2, + 0x0f, 0x80, + 0x10, 0x80, + 0x11, 0x80, + 0x12, 0x80, + 0x13, 0x1f, + 0x14, 0x00, + 0x15, 0x00, + 0x16, 0x00, + 0x17, 0x00, + 0x18, 0xff, + 0x19, 0xff, + 0x1a, 0xff, + 0x1b, 0xff, + 0x1c, 0xff, + 0x1d, 0xff, + 0x1e, 0xff, + 0x1f, 0xff, + 0x20, 0x07, + 0x21, 0x07, + 0x22, 0x00, + 0x23, 0x91, + 0x24, 0x51, + 0x25, 0x03, + 0x26, 0x00, + 0x27, 0x00, + 0x28, 0x00, + 0x29, 0x00, + 0x2a, 0x00, + 0x2b, 0x00, + 0x2c, 0x00, + 0x2d, 0x00, + 0x2e, 0x00, + 0x2f, 0x00, + 0x30, 0x00, + 0x31, 0x00, + 0x32, 0x00, + 0x33, 0x00, + 0x34, 0x00, + 0x35, 0x00, + 0x36, 0x00, + 0x37, 0x00, + 0xff, 0xff, /* Terminator (reg 0xff does not exist) */ +}; + +static int write_reg(struct i2c_client *client, u8 reg, u8 value, int channel) +{ + return i2c_smbus_write_byte_data(client, reg | (channel << 6), value); +} + +static int write_regs(struct i2c_client *client, u8 *regs, int channel) +{ + int i; + + for (i = 0; regs[i] != 0xff; i += 2) + if (i2c_smbus_write_byte_data(client, + regs[i] | (channel << 6), regs[i + 1]) < 0) + return -1; + return 0; +} + +static int wis_tw2804_command(struct i2c_client *client, + unsigned int cmd, void *arg) +{ + struct wis_tw2804 *dec = i2c_get_clientdata(client); + + if (cmd == DECODER_SET_CHANNEL) { + int *input = arg; + + if (*input < 0 || *input > 3) { + printk(KERN_ERR "wis-tw2804: channel %d is not " + "between 0 and 3!\n", *input); + return 0; + } + dec->channel = *input; + printk(KERN_DEBUG "wis-tw2804: initializing TW2804 " + "channel %d\n", dec->channel); + if (dec->channel == 0 && + write_regs(client, global_registers, 0) < 0) { + printk(KERN_ERR "wis-tw2804: error initializing " + "TW2804 global registers\n"); + return 0; + } + if (write_regs(client, channel_registers, dec->channel) < 0) { + printk(KERN_ERR "wis-tw2804: error initializing " + "TW2804 channel %d\n", dec->channel); + return 0; + } + return 0; + } + + if (dec->channel < 0) { + printk(KERN_DEBUG "wis-tw2804: ignoring command %08x until " + "channel number is set\n", cmd); + return 0; + } + + switch (cmd) { + case DECODER_SET_NORM: + { + int *input = arg; + u8 regs[] = { + 0x01, *input == VIDEO_MODE_NTSC ? 0xc4 : 0x84, + 0x09, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04, + 0x0a, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20, + 0x0b, *input == VIDEO_MODE_NTSC ? 0x07 : 0x04, + 0x0c, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20, + 0x0d, *input == VIDEO_MODE_NTSC ? 0x40 : 0x4a, + 0x16, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40, + 0x17, *input == VIDEO_MODE_NTSC ? 0x00 : 0x40, + 0x20, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f, + 0x21, *input == VIDEO_MODE_NTSC ? 0x07 : 0x0f, + 0xff, 0xff, + }; + write_regs(client, regs, dec->channel); + dec->norm = *input; + break; + } + case VIDIOC_QUERYCTRL: + { + struct v4l2_queryctrl *ctrl = arg; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Brightness", sizeof(ctrl->name)); + ctrl->minimum = 0; + ctrl->maximum = 255; + ctrl->step = 1; + ctrl->default_value = 128; + ctrl->flags = 0; + break; + case V4L2_CID_CONTRAST: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Contrast", sizeof(ctrl->name)); + ctrl->minimum = 0; + ctrl->maximum = 255; + ctrl->step = 1; + ctrl->default_value = 128; + ctrl->flags = 0; + break; + case V4L2_CID_SATURATION: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); + ctrl->minimum = 0; + ctrl->maximum = 255; + ctrl->step = 1; + ctrl->default_value = 128; + ctrl->flags = 0; + break; + case V4L2_CID_HUE: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); + ctrl->minimum = 0; + ctrl->maximum = 255; + ctrl->step = 1; + ctrl->default_value = 128; + ctrl->flags = 0; + break; + } + break; + } + case VIDIOC_S_CTRL: + { + struct v4l2_control *ctrl = arg; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + if (ctrl->value > 255) + dec->brightness = 255; + else if (ctrl->value < 0) + dec->brightness = 0; + else + dec->brightness = ctrl->value; + write_reg(client, 0x12, dec->brightness, dec->channel); + break; + case V4L2_CID_CONTRAST: + if (ctrl->value > 255) + dec->contrast = 255; + else if (ctrl->value < 0) + dec->contrast = 0; + else + dec->contrast = ctrl->value; + write_reg(client, 0x11, dec->contrast, dec->channel); + break; + case V4L2_CID_SATURATION: + if (ctrl->value > 255) + dec->saturation = 255; + else if (ctrl->value < 0) + dec->saturation = 0; + else + dec->saturation = ctrl->value; + write_reg(client, 0x10, dec->saturation, dec->channel); + break; + case V4L2_CID_HUE: + if (ctrl->value > 255) + dec->hue = 255; + else if (ctrl->value < 0) + dec->hue = 0; + else + dec->hue = ctrl->value; + write_reg(client, 0x0f, dec->hue, dec->channel); + break; + } + break; + } + case VIDIOC_G_CTRL: + { + struct v4l2_control *ctrl = arg; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ctrl->value = dec->brightness; + break; + case V4L2_CID_CONTRAST: + ctrl->value = dec->contrast; + break; + case V4L2_CID_SATURATION: + ctrl->value = dec->saturation; + break; + case V4L2_CID_HUE: + ctrl->value = dec->hue; + break; + } + break; + } + default: + break; + } + return 0; +} + +static struct i2c_driver wis_tw2804_driver; + +static struct i2c_client wis_tw2804_client_templ = { + .name = "TW2804 (WIS)", + .driver = &wis_tw2804_driver, +}; + +static int wis_tw2804_detect(struct i2c_adapter *adapter, int addr, int kind) +{ + struct i2c_client *client; + struct wis_tw2804 *dec; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return 0; + + client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + if (client == NULL) + return -ENOMEM; + memcpy(client, &wis_tw2804_client_templ, + sizeof(wis_tw2804_client_templ)); + client->adapter = adapter; + client->addr = addr; + + dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL); + if (dec == NULL) { + kfree(client); + return -ENOMEM; + } + dec->channel = -1; + dec->norm = VIDEO_MODE_NTSC; + dec->brightness = 128; + dec->contrast = 128; + dec->saturation = 128; + dec->hue = 128; + i2c_set_clientdata(client, dec); + + printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n", + addr, adapter->name); + + i2c_attach_client(client); + return 0; +} + +static int wis_tw2804_detach(struct i2c_client *client) +{ + struct wis_tw2804 *dec = i2c_get_clientdata(client); + int r; + + r = i2c_detach_client(client); + if (r < 0) + return r; + + kfree(client); + kfree(dec); + return 0; +} + +static struct i2c_driver wis_tw2804_driver = { + .driver = { + .name = "WIS TW2804 I2C driver", + }, + .id = I2C_DRIVERID_WIS_TW2804, + .detach_client = wis_tw2804_detach, + .command = wis_tw2804_command, +}; + +static int __init wis_tw2804_init(void) +{ + int r; + + r = i2c_add_driver(&wis_tw2804_driver); + if (r < 0) + return r; + return wis_i2c_add_driver(wis_tw2804_driver.id, wis_tw2804_detect); +} + +static void __exit wis_tw2804_cleanup(void) +{ + wis_i2c_del_driver(wis_tw2804_detect); + i2c_del_driver(&wis_tw2804_driver); +} + +module_init(wis_tw2804_init); +module_exit(wis_tw2804_cleanup); + +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3