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/*
* Copyright (C) 2012-2015 Red Hat Inc.
*
* Based in parts on the udl code. Based in parts on the gm12u320 fb driver:
* Copyright (C) 2013 Viacheslav Nurmekhamitov <slavrn@yandex.ru>
* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#include <drm/drm_crtc_helper.h>
#include "gm12u320_drv.h"
/*
* Note this assumes this driver is only ever used with the Acer C120, if we
* add support for other devices the vendor and model should be parametrized.
*/
static struct edid gm12u320_edid = {
.header = { 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 },
.mfg_id = { 0x04, 0x72 }, /* "ACR" */
.prod_code = { 0x20, 0xc1 }, /* C120h */
.mfg_week = 1,
.mfg_year = 1,
.version = 1, /* EDID 1.3 */
.revision = 3, /* EDID 1.3 */
.input = 0x80, /* Digital input */
.features = 0x02, /* Pref timing in DTD 1 */
.standard_timings = { { 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 },
{ 1, 1 }, { 1, 1 }, { 1, 1 }, { 1, 1 } },
.detailed_timings = { {
.pixel_clock = 3383,
/* hactive = 852, hblank = 256 */
.data.pixel_data.hactive_lo = 0x54,
.data.pixel_data.hblank_lo = 0x00,
.data.pixel_data.hactive_hblank_hi = 0x31,
/* vactive = 480, vblank = 28 */
.data.pixel_data.vactive_lo = 0xe0,
.data.pixel_data.vblank_lo = 0x1c,
.data.pixel_data.vactive_vblank_hi = 0x10,
/* hsync offset 40 pw 128, vsync offset 1 pw 4 */
.data.pixel_data.hsync_offset_lo = 0x28,
.data.pixel_data.hsync_pulse_width_lo = 0x80,
.data.pixel_data.vsync_offset_pulse_width_lo = 0x14,
.data.pixel_data.hsync_vsync_offset_pulse_width_hi = 0x00,
/* Digital separate syncs, hsync+, vsync+ */
.data.pixel_data.misc = 0x1e,
}, {
.pixel_clock = 0,
.data.other_data.type = 0xfd, /* Monitor ranges */
.data.other_data.data.range.min_vfreq = 59,
.data.other_data.data.range.max_vfreq = 61,
.data.other_data.data.range.min_hfreq_khz = 29,
.data.other_data.data.range.max_hfreq_khz = 32,
.data.other_data.data.range.pixel_clock_mhz = 4, /* 40 MHz */
.data.other_data.data.range.flags = 0,
.data.other_data.data.range.formula.cvt =
{ 0xa0, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 },
}, {
.pixel_clock = 0,
.data.other_data.type = 0xfc, /* Model string */
.data.other_data.data.str.str =
{ 'C', '1', '2', '0', 'P', 'r', 'o', 'j', 'e', 'c',
't', 'o', 'r' },
}, {
.pixel_clock = 0,
.data.other_data.type = 0xfe, /* Unspecified text / padding */
.data.other_data.data.str.str =
{ '\n', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ' },
} },
.checksum = 0x40,
};
static int gm12u320_get_modes(struct drm_connector *connector)
{
drm_mode_connector_update_edid_property(connector, &gm12u320_edid);
return drm_add_edid_modes(connector, &gm12u320_edid);
}
static enum drm_connector_status
gm12u320_detect(struct drm_connector *connector, bool force)
{
if (drm_device_is_unplugged(connector->dev))
return connector_status_disconnected;
return connector_status_connected;
}
static struct drm_encoder*
gm12u320_best_single_encoder(struct drm_connector *connector)
{
int enc_id = connector->encoder_ids[0];
return drm_encoder_find(connector->dev, enc_id);
}
static int gm12u320_connector_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t val)
{
return 0;
}
static void gm12u320_connector_destroy(struct drm_connector *connector)
{
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
kfree(connector);
}
static struct drm_connector_helper_funcs gm12u320_connector_helper_funcs = {
.get_modes = gm12u320_get_modes,
.best_encoder = gm12u320_best_single_encoder,
};
static struct drm_connector_funcs gm12u320_connector_funcs = {
.dpms = drm_helper_connector_dpms,
.detect = gm12u320_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = gm12u320_connector_destroy,
.set_property = gm12u320_connector_set_property,
};
int gm12u320_connector_init(struct drm_device *dev,
struct drm_encoder *encoder)
{
struct drm_connector *connector;
connector = kzalloc(sizeof(struct drm_connector), GFP_KERNEL);
if (!connector)
return -ENOMEM;
drm_connector_init(dev, connector, &gm12u320_connector_funcs,
DRM_MODE_CONNECTOR_Unknown);
drm_connector_helper_add(connector, &gm12u320_connector_helper_funcs);
drm_connector_register(connector);
drm_mode_connector_attach_encoder(connector, encoder);
drm_object_attach_property(&connector->base,
dev->mode_config.dirty_info_property, 1);
return 0;
}
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