diff options
Diffstat (limited to 'drivers/media/usb/pwc/pwc-ctrl.c')
| -rw-r--r-- | drivers/media/usb/pwc/pwc-ctrl.c | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/drivers/media/usb/pwc/pwc-ctrl.c b/drivers/media/usb/pwc/pwc-ctrl.c new file mode 100644 index 0000000000..cff64d8720 --- /dev/null +++ b/drivers/media/usb/pwc/pwc-ctrl.c @@ -0,0 +1,544 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Driver for Philips webcam + Functions that send various control messages to the webcam, including + video modes. + (C) 1999-2003 Nemosoft Unv. + (C) 2004-2006 Luc Saillard (luc@saillard.org) + (C) 2011 Hans de Goede <hdegoede@redhat.com> + + NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx + driver and thus may have bugs that are not present in the original version. + Please send bug reports and support requests to <luc@saillard.org>. + + NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx + driver and thus may have bugs that are not present in the original version. + Please send bug reports and support requests to <luc@saillard.org>. + The decompression routines have been implemented by reverse-engineering the + Nemosoft binary pwcx module. Caveat emptor. + +*/ + +/* + Changes + 2001/08/03 Alvarado Added methods for changing white balance and + red/green gains + */ + +/* Control functions for the cam; brightness, contrast, video mode, etc. */ + +#ifdef __KERNEL__ +#include <linux/uaccess.h> +#endif +#include <asm/errno.h> + +#include "pwc.h" +#include "pwc-kiara.h" +#include "pwc-timon.h" +#include "pwc-dec1.h" +#include "pwc-dec23.h" + +/* Selectors for status controls used only in this file */ +#define GET_STATUS_B00 0x0B00 +#define SENSOR_TYPE_FORMATTER1 0x0C00 +#define GET_STATUS_3000 0x3000 +#define READ_RAW_Y_MEAN_FORMATTER 0x3100 +#define SET_POWER_SAVE_MODE_FORMATTER 0x3200 +#define MIRROR_IMAGE_FORMATTER 0x3300 +#define LED_FORMATTER 0x3400 +#define LOWLIGHT 0x3500 +#define GET_STATUS_3600 0x3600 +#define SENSOR_TYPE_FORMATTER2 0x3700 +#define GET_STATUS_3800 0x3800 +#define GET_STATUS_4000 0x4000 +#define GET_STATUS_4100 0x4100 /* Get */ +#define CTL_STATUS_4200 0x4200 /* [GS] 1 */ + +/* Formatters for the Video Endpoint controls [GS]ET_EP_STREAM_CTL */ +#define VIDEO_OUTPUT_CONTROL_FORMATTER 0x0100 + +static const char *size2name[PSZ_MAX] = +{ + "subQCIF", + "QSIF", + "QCIF", + "SIF", + "CIF", + "VGA", +}; + +/********/ + +/* Entries for the Nala (645/646) camera; the Nala doesn't have compression + preferences, so you either get compressed or non-compressed streams. + + An alternate value of 0 means this mode is not available at all. + */ + +#define PWC_FPS_MAX_NALA 8 + +struct Nala_table_entry { + char alternate; /* USB alternate setting */ + int compressed; /* Compressed yes/no */ + + unsigned char mode[3]; /* precomputed mode table */ +}; + +static unsigned int Nala_fps_vector[PWC_FPS_MAX_NALA] = { 4, 5, 7, 10, 12, 15, 20, 24 }; + +static struct Nala_table_entry Nala_table[PSZ_MAX][PWC_FPS_MAX_NALA] = +{ +#include "pwc-nala.h" +}; + +/****************************************************************************/ + +static int recv_control_msg(struct pwc_device *pdev, + u8 request, u16 value, int recv_count) +{ + int rc; + + rc = usb_control_msg(pdev->udev, usb_rcvctrlpipe(pdev->udev, 0), + request, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, pdev->vcinterface, + pdev->ctrl_buf, recv_count, USB_CTRL_GET_TIMEOUT); + if (rc < 0) + PWC_ERROR("recv_control_msg error %d req %02x val %04x\n", + rc, request, value); + return rc; +} + +static inline int send_video_command(struct pwc_device *pdev, + int index, const unsigned char *buf, int buflen) +{ + int rc; + + memcpy(pdev->ctrl_buf, buf, buflen); + + rc = usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), + SET_EP_STREAM_CTL, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + VIDEO_OUTPUT_CONTROL_FORMATTER, index, + pdev->ctrl_buf, buflen, USB_CTRL_SET_TIMEOUT); + if (rc >= 0) + memcpy(pdev->cmd_buf, buf, buflen); + else + PWC_ERROR("send_video_command error %d\n", rc); + + return rc; +} + +int send_control_msg(struct pwc_device *pdev, + u8 request, u16 value, void *buf, int buflen) +{ + return usb_control_msg(pdev->udev, usb_sndctrlpipe(pdev->udev, 0), + request, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, pdev->vcinterface, + buf, buflen, USB_CTRL_SET_TIMEOUT); +} + +static int set_video_mode_Nala(struct pwc_device *pdev, int size, int pixfmt, + int frames, int *compression, int send_to_cam) +{ + int fps, ret = 0; + struct Nala_table_entry *pEntry; + int frames2frames[31] = + { /* closest match of framerate */ + 0, 0, 0, 0, 4, /* 0-4 */ + 5, 5, 7, 7, 10, /* 5-9 */ + 10, 10, 12, 12, 15, /* 10-14 */ + 15, 15, 15, 20, 20, /* 15-19 */ + 20, 20, 20, 24, 24, /* 20-24 */ + 24, 24, 24, 24, 24, /* 25-29 */ + 24 /* 30 */ + }; + int frames2table[31] = + { 0, 0, 0, 0, 0, /* 0-4 */ + 1, 1, 1, 2, 2, /* 5-9 */ + 3, 3, 4, 4, 4, /* 10-14 */ + 5, 5, 5, 5, 5, /* 15-19 */ + 6, 6, 6, 6, 7, /* 20-24 */ + 7, 7, 7, 7, 7, /* 25-29 */ + 7 /* 30 */ + }; + + if (size < 0 || size > PSZ_CIF) + return -EINVAL; + if (frames < 4) + frames = 4; + else if (size > PSZ_QCIF && frames > 15) + frames = 15; + else if (frames > 25) + frames = 25; + frames = frames2frames[frames]; + fps = frames2table[frames]; + pEntry = &Nala_table[size][fps]; + if (pEntry->alternate == 0) + return -EINVAL; + + if (send_to_cam) + ret = send_video_command(pdev, pdev->vendpoint, + pEntry->mode, 3); + if (ret < 0) + return ret; + + if (pEntry->compressed && pixfmt == V4L2_PIX_FMT_YUV420) + pwc_dec1_init(pdev, pEntry->mode); + + /* Set various parameters */ + pdev->pixfmt = pixfmt; + pdev->vframes = frames; + pdev->valternate = pEntry->alternate; + pdev->width = pwc_image_sizes[size][0]; + pdev->height = pwc_image_sizes[size][1]; + pdev->frame_size = (pdev->width * pdev->height * 3) / 2; + if (pEntry->compressed) { + if (pdev->release < 5) { /* 4 fold compression */ + pdev->vbandlength = 528; + pdev->frame_size /= 4; + } + else { + pdev->vbandlength = 704; + pdev->frame_size /= 3; + } + } + else + pdev->vbandlength = 0; + + /* Let pwc-if.c:isoc_init know we don't support higher compression */ + *compression = 3; + + return 0; +} + + +static int set_video_mode_Timon(struct pwc_device *pdev, int size, int pixfmt, + int frames, int *compression, int send_to_cam) +{ + const struct Timon_table_entry *pChoose; + int fps, ret = 0; + + if (size >= PSZ_MAX || *compression < 0 || *compression > 3) + return -EINVAL; + if (frames < 5) + frames = 5; + else if (size == PSZ_VGA && frames > 15) + frames = 15; + else if (frames > 30) + frames = 30; + fps = (frames / 5) - 1; + + /* Find a supported framerate with progressively higher compression */ + do { + pChoose = &Timon_table[size][fps][*compression]; + if (pChoose->alternate != 0) + break; + (*compression)++; + } while (*compression <= 3); + + if (pChoose->alternate == 0) + return -ENOENT; /* Not supported. */ + + if (send_to_cam) + ret = send_video_command(pdev, pdev->vendpoint, + pChoose->mode, 13); + if (ret < 0) + return ret; + + if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420) + pwc_dec23_init(pdev, pChoose->mode); + + /* Set various parameters */ + pdev->pixfmt = pixfmt; + pdev->vframes = (fps + 1) * 5; + pdev->valternate = pChoose->alternate; + pdev->width = pwc_image_sizes[size][0]; + pdev->height = pwc_image_sizes[size][1]; + pdev->vbandlength = pChoose->bandlength; + if (pChoose->bandlength > 0) + pdev->frame_size = (pChoose->bandlength * pdev->height) / 4; + else + pdev->frame_size = (pdev->width * pdev->height * 12) / 8; + return 0; +} + + +static int set_video_mode_Kiara(struct pwc_device *pdev, int size, int pixfmt, + int frames, int *compression, int send_to_cam) +{ + const struct Kiara_table_entry *pChoose; + int fps, ret = 0; + + if (size >= PSZ_MAX || *compression < 0 || *compression > 3) + return -EINVAL; + if (frames < 5) + frames = 5; + else if (size == PSZ_VGA && frames > 15) + frames = 15; + else if (frames > 30) + frames = 30; + fps = (frames / 5) - 1; + + /* Find a supported framerate with progressively higher compression */ + do { + pChoose = &Kiara_table[size][fps][*compression]; + if (pChoose->alternate != 0) + break; + (*compression)++; + } while (*compression <= 3); + + if (pChoose->alternate == 0) + return -ENOENT; /* Not supported. */ + + /* Firmware bug: video endpoint is 5, but commands are sent to endpoint 4 */ + if (send_to_cam) + ret = send_video_command(pdev, 4, pChoose->mode, 12); + if (ret < 0) + return ret; + + if (pChoose->bandlength > 0 && pixfmt == V4L2_PIX_FMT_YUV420) + pwc_dec23_init(pdev, pChoose->mode); + + /* All set and go */ + pdev->pixfmt = pixfmt; + pdev->vframes = (fps + 1) * 5; + pdev->valternate = pChoose->alternate; + pdev->width = pwc_image_sizes[size][0]; + pdev->height = pwc_image_sizes[size][1]; + pdev->vbandlength = pChoose->bandlength; + if (pdev->vbandlength > 0) + pdev->frame_size = (pdev->vbandlength * pdev->height) / 4; + else + pdev->frame_size = (pdev->width * pdev->height * 12) / 8; + PWC_TRACE("frame_size=%d, vframes=%d, vsize=%d, vbandlength=%d\n", + pdev->frame_size, pdev->vframes, size, pdev->vbandlength); + return 0; +} + +int pwc_set_video_mode(struct pwc_device *pdev, int width, int height, + int pixfmt, int frames, int *compression, int send_to_cam) +{ + int ret, size; + + PWC_DEBUG_FLOW("set_video_mode(%dx%d @ %d, pixfmt %08x).\n", + width, height, frames, pixfmt); + size = pwc_get_size(pdev, width, height); + PWC_TRACE("decode_size = %d.\n", size); + + if (DEVICE_USE_CODEC1(pdev->type)) { + ret = set_video_mode_Nala(pdev, size, pixfmt, frames, + compression, send_to_cam); + } else if (DEVICE_USE_CODEC3(pdev->type)) { + ret = set_video_mode_Kiara(pdev, size, pixfmt, frames, + compression, send_to_cam); + } else { + ret = set_video_mode_Timon(pdev, size, pixfmt, frames, + compression, send_to_cam); + } + if (ret < 0) { + PWC_ERROR("Failed to set video mode %s@%d fps; return code = %d\n", size2name[size], frames, ret); + return ret; + } + pdev->frame_total_size = pdev->frame_size + pdev->frame_header_size + pdev->frame_trailer_size; + PWC_DEBUG_SIZE("Set resolution to %dx%d\n", pdev->width, pdev->height); + return 0; +} + +static unsigned int pwc_get_fps_Nala(struct pwc_device *pdev, unsigned int index, unsigned int size) +{ + unsigned int i; + + for (i = 0; i < PWC_FPS_MAX_NALA; i++) { + if (Nala_table[size][i].alternate) { + if (index--==0) return Nala_fps_vector[i]; + } + } + return 0; +} + +static unsigned int pwc_get_fps_Kiara(struct pwc_device *pdev, unsigned int index, unsigned int size) +{ + unsigned int i; + + for (i = 0; i < PWC_FPS_MAX_KIARA; i++) { + if (Kiara_table[size][i][3].alternate) { + if (index--==0) return Kiara_fps_vector[i]; + } + } + return 0; +} + +static unsigned int pwc_get_fps_Timon(struct pwc_device *pdev, unsigned int index, unsigned int size) +{ + unsigned int i; + + for (i=0; i < PWC_FPS_MAX_TIMON; i++) { + if (Timon_table[size][i][3].alternate) { + if (index--==0) return Timon_fps_vector[i]; + } + } + return 0; +} + +unsigned int pwc_get_fps(struct pwc_device *pdev, unsigned int index, unsigned int size) +{ + unsigned int ret; + + if (DEVICE_USE_CODEC1(pdev->type)) { + ret = pwc_get_fps_Nala(pdev, index, size); + + } else if (DEVICE_USE_CODEC3(pdev->type)) { + ret = pwc_get_fps_Kiara(pdev, index, size); + + } else { + ret = pwc_get_fps_Timon(pdev, index, size); + } + + return ret; +} + +int pwc_get_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data) +{ + int ret; + + ret = recv_control_msg(pdev, request, value, 1); + if (ret < 0) + return ret; + + *data = pdev->ctrl_buf[0]; + return 0; +} + +int pwc_set_u8_ctrl(struct pwc_device *pdev, u8 request, u16 value, u8 data) +{ + int ret; + + pdev->ctrl_buf[0] = data; + ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 1); + if (ret < 0) + return ret; + + return 0; +} + +int pwc_get_s8_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data) +{ + int ret; + + ret = recv_control_msg(pdev, request, value, 1); + if (ret < 0) + return ret; + + *data = ((s8 *)pdev->ctrl_buf)[0]; + return 0; +} + +int pwc_get_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, int *data) +{ + int ret; + + ret = recv_control_msg(pdev, request, value, 2); + if (ret < 0) + return ret; + + *data = (pdev->ctrl_buf[1] << 8) | pdev->ctrl_buf[0]; + return 0; +} + +int pwc_set_u16_ctrl(struct pwc_device *pdev, u8 request, u16 value, u16 data) +{ + int ret; + + pdev->ctrl_buf[0] = data & 0xff; + pdev->ctrl_buf[1] = data >> 8; + ret = send_control_msg(pdev, request, value, pdev->ctrl_buf, 2); + if (ret < 0) + return ret; + + return 0; +} + +int pwc_button_ctrl(struct pwc_device *pdev, u16 value) +{ + int ret; + + ret = send_control_msg(pdev, SET_STATUS_CTL, value, NULL, 0); + if (ret < 0) + return ret; + + return 0; +} + +/* POWER */ +void pwc_camera_power(struct pwc_device *pdev, int power) +{ + int r; + + if (!pdev->power_save) + return; + + if (pdev->type < 675 || (pdev->type < 730 && pdev->release < 6)) + return; /* Not supported by Nala or Timon < release 6 */ + + if (power) + pdev->ctrl_buf[0] = 0x00; /* active */ + else + pdev->ctrl_buf[0] = 0xFF; /* power save */ + r = send_control_msg(pdev, SET_STATUS_CTL, + SET_POWER_SAVE_MODE_FORMATTER, pdev->ctrl_buf, 1); + if (r < 0) + PWC_ERROR("Failed to power %s camera (%d)\n", + power ? "on" : "off", r); +} + +int pwc_set_leds(struct pwc_device *pdev, int on_value, int off_value) +{ + int r; + + if (pdev->type < 730) + return 0; + on_value /= 100; + off_value /= 100; + if (on_value < 0) + on_value = 0; + if (on_value > 0xff) + on_value = 0xff; + if (off_value < 0) + off_value = 0; + if (off_value > 0xff) + off_value = 0xff; + + pdev->ctrl_buf[0] = on_value; + pdev->ctrl_buf[1] = off_value; + + r = send_control_msg(pdev, + SET_STATUS_CTL, LED_FORMATTER, pdev->ctrl_buf, 2); + if (r < 0) + PWC_ERROR("Failed to set LED on/off time (%d)\n", r); + + return r; +} + +#ifdef CONFIG_USB_PWC_DEBUG +int pwc_get_cmos_sensor(struct pwc_device *pdev, int *sensor) +{ + int ret, request; + + if (pdev->type < 675) + request = SENSOR_TYPE_FORMATTER1; + else if (pdev->type < 730) + return -1; /* The Vesta series doesn't have this call */ + else + request = SENSOR_TYPE_FORMATTER2; + + ret = recv_control_msg(pdev, GET_STATUS_CTL, request, 1); + if (ret < 0) + return ret; + if (pdev->type < 675) + *sensor = pdev->ctrl_buf[0] | 0x100; + else + *sensor = pdev->ctrl_buf[0]; + return 0; +} +#endif |