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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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0d346d2a6f
We have 'struct v4l2_subdev_pad_config' which contains configuration for a single pad used for the TRY functionality, and an array of those structs is passed to various v4l2_subdev_pad_ops. I was working on subdev internal routing between pads, and realized that there's no way to add TRY functionality for routes, which is not pad specific configuration. Adding a separate struct for try-route config wouldn't work either, as e.g. set-fmt needs to know the try-route configuration to propagate the settings. This patch adds a new struct, 'struct v4l2_subdev_state' (which at the moment only contains the v4l2_subdev_pad_config array) and the new struct is used in most of the places where v4l2_subdev_pad_config was used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config are changed to instead take v4l2_subdev_state. The changes to drivers/media/v4l2-core/v4l2-subdev.c and include/media/v4l2-subdev.h were written by hand, and all the driver changes were done with the semantic patch below. The spatch needs to be applied to a select list of directories. I used the following shell commands to apply the spatch: dirs="drivers/media/i2c drivers/media/platform drivers/media/usb drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media" for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff --in-place --sp-file v4l2-subdev-state.cocci $dir; done Note that Coccinelle chokes on a few drivers (gcc extensions?). With minor changes we can make Coccinelle run fine, and these changes can be reverted after spatch. The diff for these changes is: For drivers/media/i2c/s5k5baf.c: @@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct v4l2_subdev *sd, &s5k5baf_cis_rect, v4l2_subdev_get_try_crop(sd, cfg, PAD_CIS), v4l2_subdev_get_try_compose(sd, cfg, PAD_CIS), - v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT) + v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT), }; s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r); return 0; For drivers/media/platform/s3c-camif/camif-capture.c: @@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd, *mf = camif->mbus_fmt; break; - case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P: + case CAMIF_SD_PAD_SOURCE_C: /* crop rectangle at camera interface input */ mf->width = camif->camif_crop.width; mf->height = camif->camif_crop.height; @@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd, } break; - case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P: + case CAMIF_SD_PAD_SOURCE_C: /* Pixel format can be only changed on the sink pad. */ mf->code = camif->mbus_fmt.code; mf->width = crop->width; The semantic patch is: // <smpl> // Change function parameter @@ identifier func; identifier cfg; @@ func(..., - struct v4l2_subdev_pad_config *cfg + struct v4l2_subdev_state *sd_state , ...) { <... - cfg + sd_state ...> } // Change function declaration parameter @@ identifier func; identifier cfg; type T; @@ T func(..., - struct v4l2_subdev_pad_config *cfg + struct v4l2_subdev_state *sd_state , ...); // Change function return value @@ identifier func; @@ - struct v4l2_subdev_pad_config + struct v4l2_subdev_state *func(...) { ... } // Change function declaration return value @@ identifier func; @@ - struct v4l2_subdev_pad_config + struct v4l2_subdev_state *func(...); // Some drivers pass a local pad_cfg for a single pad to a called function. Wrap it // inside a pad_state. @@ identifier func; identifier pad_cfg; @@ func(...) { ... struct v4l2_subdev_pad_config pad_cfg; + struct v4l2_subdev_state pad_state = { .pads = &pad_cfg }; <+... ( v4l2_subdev_call | sensor_call | isi_try_fse | isc_try_fse | saa_call_all ) (..., - &pad_cfg + &pad_state ,...) ...+> } // If the function uses fields from pad_config, access via state->pads @@ identifier func; identifier state; @@ func(..., struct v4l2_subdev_state *state , ...) { <... ( - state->try_fmt + state->pads->try_fmt | - state->try_crop + state->pads->try_crop | - state->try_compose + state->pads->try_compose ) ...> } // If the function accesses the filehandle, use fh->state instead @@ struct v4l2_subdev_fh *fh; @@ - fh->pad + fh->state @@ struct v4l2_subdev_fh fh; @@ - fh.pad + fh.state // Start of vsp1 specific @@ @@ struct vsp1_entity { ... - struct v4l2_subdev_pad_config *config; + struct v4l2_subdev_state *config; ... }; @@ symbol entity; @@ vsp1_entity_init(...) { ... entity->config = - v4l2_subdev_alloc_pad_config + v4l2_subdev_alloc_state (&entity->subdev); ... } @@ symbol entity; @@ vsp1_entity_destroy(...) { ... - v4l2_subdev_free_pad_config + v4l2_subdev_free_state (entity->config); ... } @exists@ identifier func =~ "(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)"; symbol config; @@ func(...) { ... - struct v4l2_subdev_pad_config *config; + struct v4l2_subdev_state *config; ... } // End of vsp1 specific // Start of rcar specific @@ identifier sd; identifier pad_cfg; @@ rvin_try_format(...) { ... - struct v4l2_subdev_pad_config *pad_cfg; + struct v4l2_subdev_state *sd_state; ... - pad_cfg = v4l2_subdev_alloc_pad_config(sd); + sd_state = v4l2_subdev_alloc_state(sd); <... - pad_cfg + sd_state ...> - v4l2_subdev_free_pad_config(pad_cfg); + v4l2_subdev_free_state(sd_state); ... } // End of rcar specific // Start of rockchip specific @@ identifier func =~ "(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)"; symbol rsz; symbol pad_cfg; @@ func(...) { + struct v4l2_subdev_state state = { .pads = rsz->pad_cfg }; ... - rsz->pad_cfg + &state ... } @@ identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)"; symbol isp; symbol pad_cfg; @@ func(...) { + struct v4l2_subdev_state state = { .pads = isp->pad_cfg }; ... - isp->pad_cfg + &state ... } @@ symbol rkisp1; symbol isp; symbol pad_cfg; @@ rkisp1_isp_register(...) { + struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg }; ... - rkisp1->isp.pad_cfg + &state ... } // End of rockchip specific // Start of tegra-video specific @@ identifier sd; identifier pad_cfg; @@ __tegra_channel_try_format(...) { ... - struct v4l2_subdev_pad_config *pad_cfg; + struct v4l2_subdev_state *sd_state; ... - pad_cfg = v4l2_subdev_alloc_pad_config(sd); + sd_state = v4l2_subdev_alloc_state(sd); <... - pad_cfg + sd_state ...> - v4l2_subdev_free_pad_config(pad_cfg); + v4l2_subdev_free_state(sd_state); ... } @@ identifier sd_state; @@ __tegra_channel_try_format(...) { ... struct v4l2_subdev_state *sd_state; <... - sd_state->try_crop + sd_state->pads->try_crop ...> } // End of tegra-video specific // </smpl> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
452 lines
11 KiB
C
452 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* adv7175 - adv7175a video encoder driver version 0.0.3
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*
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* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
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* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
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* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
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* - some corrections for Pinnacle Systems Inc. DC10plus card.
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*
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* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
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* - moved over to linux>=2.4.x i2c protocol (9/9/2002)
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/ioctl.h>
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#include <linux/uaccess.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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MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
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MODULE_AUTHOR("Dave Perks");
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MODULE_LICENSE("GPL");
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#define I2C_ADV7175 0xd4
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#define I2C_ADV7176 0x54
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static int debug;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "Debug level (0-1)");
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/* ----------------------------------------------------------------------- */
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struct adv7175 {
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struct v4l2_subdev sd;
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v4l2_std_id norm;
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int input;
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};
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static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct adv7175, sd);
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}
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static char *inputs[] = { "pass_through", "play_back", "color_bar" };
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static u32 adv7175_codes[] = {
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MEDIA_BUS_FMT_UYVY8_2X8,
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MEDIA_BUS_FMT_UYVY8_1X16,
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};
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/* ----------------------------------------------------------------------- */
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static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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static inline int adv7175_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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return i2c_smbus_read_byte_data(client, reg);
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}
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static int adv7175_write_block(struct v4l2_subdev *sd,
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const u8 *data, unsigned int len)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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int ret = -1;
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u8 reg;
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/* the adv7175 has an autoincrement function, use it if
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* the adapter understands raw I2C */
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if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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/* do raw I2C, not smbus compatible */
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u8 block_data[32];
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int block_len;
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while (len >= 2) {
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block_len = 0;
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block_data[block_len++] = reg = data[0];
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do {
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block_data[block_len++] = data[1];
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reg++;
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len -= 2;
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data += 2;
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} while (len >= 2 && data[0] == reg && block_len < 32);
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ret = i2c_master_send(client, block_data, block_len);
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if (ret < 0)
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break;
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}
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} else {
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/* do some slow I2C emulation kind of thing */
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while (len >= 2) {
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reg = *data++;
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ret = adv7175_write(sd, reg, *data++);
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if (ret < 0)
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break;
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len -= 2;
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}
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}
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return ret;
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}
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static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through)
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{
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/* for some reason pass_through NTSC needs
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* a different sub-carrier freq to remain stable. */
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if (pass_through)
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adv7175_write(sd, 0x02, 0x00);
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else
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adv7175_write(sd, 0x02, 0x55);
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adv7175_write(sd, 0x03, 0x55);
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adv7175_write(sd, 0x04, 0x55);
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adv7175_write(sd, 0x05, 0x25);
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}
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/* ----------------------------------------------------------------------- */
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/* Output filter: S-Video Composite */
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#define MR050 0x11 /* 0x09 */
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#define MR060 0x14 /* 0x0c */
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/* ----------------------------------------------------------------------- */
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#define TR0MODE 0x46
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#define TR0RST 0x80
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#define TR1CAPT 0x80
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#define TR1PLAY 0x00
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static const unsigned char init_common[] = {
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0x00, MR050, /* MR0, PAL enabled */
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0x01, 0x00, /* MR1 */
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0x02, 0x0c, /* subc. freq. */
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0x03, 0x8c, /* subc. freq. */
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0x04, 0x79, /* subc. freq. */
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0x05, 0x26, /* subc. freq. */
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0x06, 0x40, /* subc. phase */
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0x07, TR0MODE, /* TR0, 16bit */
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0x08, 0x21, /* */
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0x09, 0x00, /* */
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0x0a, 0x00, /* */
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0x0b, 0x00, /* */
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0x0c, TR1CAPT, /* TR1 */
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0x0d, 0x4f, /* MR2 */
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0x0e, 0x00, /* */
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0x0f, 0x00, /* */
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0x10, 0x00, /* */
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0x11, 0x00, /* */
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};
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static const unsigned char init_pal[] = {
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0x00, MR050, /* MR0, PAL enabled */
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0x01, 0x00, /* MR1 */
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0x02, 0x0c, /* subc. freq. */
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0x03, 0x8c, /* subc. freq. */
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0x04, 0x79, /* subc. freq. */
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0x05, 0x26, /* subc. freq. */
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0x06, 0x40, /* subc. phase */
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};
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static const unsigned char init_ntsc[] = {
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0x00, MR060, /* MR0, NTSC enabled */
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0x01, 0x00, /* MR1 */
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0x02, 0x55, /* subc. freq. */
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0x03, 0x55, /* subc. freq. */
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0x04, 0x55, /* subc. freq. */
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0x05, 0x25, /* subc. freq. */
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0x06, 0x1a, /* subc. phase */
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};
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static int adv7175_init(struct v4l2_subdev *sd, u32 val)
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{
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/* This is just for testing!!! */
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adv7175_write_block(sd, init_common, sizeof(init_common));
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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return 0;
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}
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static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
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{
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struct adv7175 *encoder = to_adv7175(sd);
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if (std & V4L2_STD_NTSC) {
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adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc));
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if (encoder->input == 0)
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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} else if (std & V4L2_STD_PAL) {
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adv7175_write_block(sd, init_pal, sizeof(init_pal));
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if (encoder->input == 0)
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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} else if (std & V4L2_STD_SECAM) {
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/* This is an attempt to convert
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* SECAM->PAL (typically it does not work
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* due to genlock: when decoder is in SECAM
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* and encoder in in PAL the subcarrier can
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* not be synchronized with horizontal
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* quency) */
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adv7175_write_block(sd, init_pal, sizeof(init_pal));
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if (encoder->input == 0)
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adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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} else {
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v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
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(unsigned long long)std);
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return -EINVAL;
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}
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v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
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encoder->norm = std;
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return 0;
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}
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static int adv7175_s_routing(struct v4l2_subdev *sd,
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u32 input, u32 output, u32 config)
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{
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struct adv7175 *encoder = to_adv7175(sd);
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/* RJ: input = 0: input is from decoder
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input = 1: input is from ZR36060
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input = 2: color bar */
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switch (input) {
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case 0:
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adv7175_write(sd, 0x01, 0x00);
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if (encoder->norm & V4L2_STD_NTSC)
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set_subcarrier_freq(sd, 1);
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adv7175_write(sd, 0x0c, TR1CAPT); /* TR1 */
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if (encoder->norm & V4L2_STD_SECAM)
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adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */
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else
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adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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/*udelay(10);*/
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break;
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case 1:
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adv7175_write(sd, 0x01, 0x00);
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if (encoder->norm & V4L2_STD_NTSC)
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set_subcarrier_freq(sd, 0);
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adv7175_write(sd, 0x0c, TR1PLAY); /* TR1 */
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adv7175_write(sd, 0x0d, 0x49);
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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/* udelay(10); */
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break;
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case 2:
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adv7175_write(sd, 0x01, 0x80);
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if (encoder->norm & V4L2_STD_NTSC)
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set_subcarrier_freq(sd, 0);
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adv7175_write(sd, 0x0d, 0x49);
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adv7175_write(sd, 0x07, TR0MODE | TR0RST);
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adv7175_write(sd, 0x07, TR0MODE);
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/* udelay(10); */
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break;
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default:
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v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
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return -EINVAL;
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}
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v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
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encoder->input = input;
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return 0;
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}
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static int adv7175_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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if (code->pad || code->index >= ARRAY_SIZE(adv7175_codes))
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return -EINVAL;
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code->code = adv7175_codes[code->index];
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return 0;
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}
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static int adv7175_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_state *sd_state,
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struct v4l2_subdev_format *format)
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{
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struct v4l2_mbus_framefmt *mf = &format->format;
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u8 val = adv7175_read(sd, 0x7);
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if (format->pad)
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return -EINVAL;
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if ((val & 0x40) == (1 << 6))
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mf->code = MEDIA_BUS_FMT_UYVY8_1X16;
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else
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mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
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mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
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mf->width = 0;
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mf->height = 0;
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mf->field = V4L2_FIELD_ANY;
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return 0;
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}
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static int adv7175_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
|
u8 val = adv7175_read(sd, 0x7);
|
|
int ret = 0;
|
|
|
|
if (format->pad)
|
|
return -EINVAL;
|
|
|
|
switch (mf->code) {
|
|
case MEDIA_BUS_FMT_UYVY8_2X8:
|
|
val &= ~0x40;
|
|
break;
|
|
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
val |= 0x40;
|
|
break;
|
|
|
|
default:
|
|
v4l2_dbg(1, debug, sd,
|
|
"illegal v4l2_mbus_framefmt code: %d\n", mf->code);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
ret = adv7175_write(sd, 0x7, val);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int adv7175_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
if (on)
|
|
adv7175_write(sd, 0x01, 0x00);
|
|
else
|
|
adv7175_write(sd, 0x01, 0x78);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops adv7175_core_ops = {
|
|
.init = adv7175_init,
|
|
.s_power = adv7175_s_power,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops adv7175_video_ops = {
|
|
.s_std_output = adv7175_s_std_output,
|
|
.s_routing = adv7175_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops adv7175_pad_ops = {
|
|
.enum_mbus_code = adv7175_enum_mbus_code,
|
|
.get_fmt = adv7175_get_fmt,
|
|
.set_fmt = adv7175_set_fmt,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops adv7175_ops = {
|
|
.core = &adv7175_core_ops,
|
|
.video = &adv7175_video_ops,
|
|
.pad = &adv7175_pad_ops,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int adv7175_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int i;
|
|
struct adv7175 *encoder;
|
|
struct v4l2_subdev *sd;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
|
|
if (encoder == NULL)
|
|
return -ENOMEM;
|
|
sd = &encoder->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &adv7175_ops);
|
|
encoder->norm = V4L2_STD_NTSC;
|
|
encoder->input = 0;
|
|
|
|
i = adv7175_write_block(sd, init_common, sizeof(init_common));
|
|
if (i >= 0) {
|
|
i = adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
|
i = adv7175_write(sd, 0x07, TR0MODE);
|
|
i = adv7175_read(sd, 0x12);
|
|
v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
|
|
}
|
|
if (i < 0)
|
|
v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
|
|
return 0;
|
|
}
|
|
|
|
static int adv7175_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct i2c_device_id adv7175_id[] = {
|
|
{ "adv7175", 0 },
|
|
{ "adv7176", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, adv7175_id);
|
|
|
|
static struct i2c_driver adv7175_driver = {
|
|
.driver = {
|
|
.name = "adv7175",
|
|
},
|
|
.probe = adv7175_probe,
|
|
.remove = adv7175_remove,
|
|
.id_table = adv7175_id,
|
|
};
|
|
|
|
module_i2c_driver(adv7175_driver);
|