diff options
Diffstat (limited to 'drivers/staging/go7007/wis-tw9903.c')
-rw-r--r-- | drivers/staging/go7007/wis-tw9903.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/drivers/staging/go7007/wis-tw9903.c b/drivers/staging/go7007/wis-tw9903.c new file mode 100644 index 0000000..1cdf01a --- /dev/null +++ b/drivers/staging/go7007/wis-tw9903.c @@ -0,0 +1,363 @@ +/* + * 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 <linux/module.h> +#include <linux/init.h> +#include <linux/version.h> +#include <linux/i2c.h> +#include <linux/videodev.h> +#include <linux/video_decoder.h> +#include <linux/ioctl.h> + +#include "wis-i2c.h" + +struct wis_tw9903 { + int norm; + int brightness; + int contrast; + int hue; +}; + +static u8 initial_registers[] = +{ + 0x02, 0x44, /* input 1, composite */ + 0x03, 0x92, /* correct digital format */ + 0x04, 0x00, + 0x05, 0x80, /* or 0x00 for PAL */ + 0x06, 0x40, /* second internal current reference */ + 0x07, 0x02, /* window */ + 0x08, 0x14, /* window */ + 0x09, 0xf0, /* window */ + 0x0a, 0x81, /* window */ + 0x0b, 0xd0, /* window */ + 0x0c, 0x8c, + 0x0d, 0x00, /* scaling */ + 0x0e, 0x11, /* scaling */ + 0x0f, 0x00, /* scaling */ + 0x10, 0x00, /* brightness */ + 0x11, 0x60, /* contrast */ + 0x12, 0x01, /* sharpness */ + 0x13, 0x7f, /* U gain */ + 0x14, 0x5a, /* V gain */ + 0x15, 0x00, /* hue */ + 0x16, 0xc3, /* sharpness */ + 0x18, 0x00, + 0x19, 0x58, /* vbi */ + 0x1a, 0x80, + 0x1c, 0x0f, /* video norm */ + 0x1d, 0x7f, /* video norm */ + 0x20, 0xa0, /* clamping gain (working 0x50) */ + 0x21, 0x22, + 0x22, 0xf0, + 0x23, 0xfe, + 0x24, 0x3c, + 0x25, 0x38, + 0x26, 0x44, + 0x27, 0x20, + 0x28, 0x00, + 0x29, 0x15, + 0x2a, 0xa0, + 0x2b, 0x44, + 0x2c, 0x37, + 0x2d, 0x00, + 0x2e, 0xa5, /* burst PLL control (working: a9) */ + 0x2f, 0xe0, /* 0xea is blue test frame -- 0xe0 for normal */ + 0x31, 0x00, + 0x33, 0x22, + 0x34, 0x11, + 0x35, 0x35, + 0x3b, 0x05, + 0x06, 0xc0, /* reset device */ + 0x00, 0x00, /* Terminator (reg 0x00 is read-only) */ +}; + +static int write_reg(struct i2c_client *client, u8 reg, u8 value) +{ + return i2c_smbus_write_byte_data(client, reg, value); +} + +static int write_regs(struct i2c_client *client, u8 *regs) +{ + int i; + + for (i = 0; regs[i] != 0x00; i += 2) + if (i2c_smbus_write_byte_data(client, regs[i], regs[i + 1]) < 0) + return -1; + return 0; +} + +static int wis_tw9903_command(struct i2c_client *client, + unsigned int cmd, void *arg) +{ + struct wis_tw9903 *dec = i2c_get_clientdata(client); + + switch (cmd) { + case DECODER_SET_INPUT: + { + int *input = arg; + + i2c_smbus_write_byte_data(client, 0x02, 0x40 | (*input << 1)); + break; + } +#if 0 /* The scaler on this thing seems to be horribly broken */ + case DECODER_SET_RESOLUTION: + { + struct video_decoder_resolution *res = arg; + /*int hscale = 256 * 720 / res->width;*/ + int hscale = 256 * 720 / (res->width - (res->width > 704 ? 0 : 8)); + int vscale = 256 * (dec->norm == VIDEO_MODE_NTSC ? 240 : 288) + / res->height; + u8 regs[] = { + 0x0d, vscale & 0xff, + 0x0f, hscale & 0xff, + 0x0e, ((vscale & 0xf00) >> 4) | ((hscale & 0xf00) >> 8), + 0x06, 0xc0, /* reset device */ + 0, 0, + }; + printk(KERN_DEBUG "vscale is %04x, hscale is %04x\n", + vscale, hscale); + /*write_regs(client, regs);*/ + break; + } +#endif + case DECODER_SET_NORM: + { + int *input = arg; + u8 regs[] = { + 0x05, *input == VIDEO_MODE_NTSC ? 0x80 : 0x00, + 0x07, *input == VIDEO_MODE_NTSC ? 0x02 : 0x12, + 0x08, *input == VIDEO_MODE_NTSC ? 0x14 : 0x18, + 0x09, *input == VIDEO_MODE_NTSC ? 0xf0 : 0x20, + 0, 0, + }; + write_regs(client, regs); + 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 = -128; + ctrl->maximum = 127; + ctrl->step = 1; + ctrl->default_value = 0x00; + 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 = 0x60; + ctrl->flags = 0; + break; +#if 0 + /* I don't understand how the Chroma Gain registers work... */ + case V4L2_CID_SATURATION: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Saturation", sizeof(ctrl->name)); + ctrl->minimum = 0; + ctrl->maximum = 127; + ctrl->step = 1; + ctrl->default_value = 64; + ctrl->flags = 0; + break; +#endif + case V4L2_CID_HUE: + ctrl->type = V4L2_CTRL_TYPE_INTEGER; + strncpy(ctrl->name, "Hue", sizeof(ctrl->name)); + ctrl->minimum = -128; + ctrl->maximum = 127; + ctrl->step = 1; + ctrl->default_value = 0; + ctrl->flags = 0; + break; + } + break; + } + case VIDIOC_S_CTRL: + { + struct v4l2_control *ctrl = arg; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + if (ctrl->value > 127) + dec->brightness = 127; + else if (ctrl->value < -128) + dec->brightness = -128; + else + dec->brightness = ctrl->value; + write_reg(client, 0x10, dec->brightness); + 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); + break; +#if 0 + case V4L2_CID_SATURATION: + if (ctrl->value > 127) + dec->saturation = 127; + else if (ctrl->value < 0) + dec->saturation = 0; + else + dec->saturation = ctrl->value; + /*write_reg(client, 0x0c, dec->saturation);*/ + break; +#endif + case V4L2_CID_HUE: + if (ctrl->value > 127) + dec->hue = 127; + else if (ctrl->value < -128) + dec->hue = -128; + else + dec->hue = ctrl->value; + write_reg(client, 0x15, dec->hue); + 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; +#if 0 + case V4L2_CID_SATURATION: + ctrl->value = dec->saturation; + break; +#endif + case V4L2_CID_HUE: + ctrl->value = dec->hue; + break; + } + break; + } + default: + break; + } + return 0; +} + +static struct i2c_driver wis_tw9903_driver; + +static struct i2c_client wis_tw9903_client_templ = { + .name = "TW9903 (WIS)", + .driver = &wis_tw9903_driver, +}; + +static int wis_tw9903_detect(struct i2c_adapter *adapter, int addr, int kind) +{ + struct i2c_client *client; + struct wis_tw9903 *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_tw9903_client_templ, + sizeof(wis_tw9903_client_templ)); + client->adapter = adapter; + client->addr = addr; + + dec = kmalloc(sizeof(struct wis_tw9903), GFP_KERNEL); + if (dec == NULL) { + kfree(client); + return -ENOMEM; + } + dec->norm = VIDEO_MODE_NTSC; + dec->brightness = 0; + dec->contrast = 0x60; + dec->hue = 0; + i2c_set_clientdata(client, dec); + + printk(KERN_DEBUG + "wis-tw9903: initializing TW9903 at address %d on %s\n", + addr, adapter->name); + + if (write_regs(client, initial_registers) < 0) { + printk(KERN_ERR "wis-tw9903: error initializing TW9903\n"); + kfree(client); + kfree(dec); + return 0; + } + + i2c_attach_client(client); + return 0; +} + +static int wis_tw9903_detach(struct i2c_client *client) +{ + struct wis_tw9903 *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_tw9903_driver = { + .driver = { + .name = "WIS TW9903 I2C driver", + }, + .id = I2C_DRIVERID_WIS_TW9903, + .detach_client = wis_tw9903_detach, + .command = wis_tw9903_command, +}; + +static int __init wis_tw9903_init(void) +{ + int r; + + r = i2c_add_driver(&wis_tw9903_driver); + if (r < 0) + return r; + return wis_i2c_add_driver(wis_tw9903_driver.id, wis_tw9903_detect); +} + +static void __exit wis_tw9903_cleanup(void) +{ + wis_i2c_del_driver(wis_tw9903_detect); + i2c_del_driver(&wis_tw9903_driver); +} + +module_init(wis_tw9903_init); +module_exit(wis_tw9903_cleanup); + +MODULE_LICENSE("GPL v2"); |