[deliverable/linux.git] / drivers / gpu / drm / i2c / ch7006_drv.c

/*
 * Copyright (C) 2009 Francisco Jerez.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include <linux/module.h>

#include "ch7006_priv.h"

/* DRM encoder functions */

static void ch7006_encoder_set_config(struct drm_encoder *encoder,
				      void *params)
{
	struct ch7006_priv *priv = to_ch7006_priv(encoder);

	priv->params = *(struct ch7006_encoder_params *)params;
}

static void ch7006_encoder_destroy(struct drm_encoder *encoder)
{
	struct ch7006_priv *priv = to_ch7006_priv(encoder);

	drm_property_destroy(encoder->dev, priv->scale_property);

	kfree(priv);
	to_encoder_slave(encoder)->slave_priv = NULL;

	drm_i2c_encoder_destroy(encoder);
}

static void  ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct ch7006_state *state = &priv->state;

	ch7006_dbg(client, "\n");

	if (mode == priv->last_dpms)
		return;
	priv->last_dpms = mode;

	ch7006_setup_power_state(encoder);

	ch7006_load_reg(client, state, CH7006_POWER);
}

static void ch7006_encoder_save(struct drm_encoder *encoder)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);

	ch7006_dbg(client, "\n");

	ch7006_state_save(client, &priv->saved_state);
}

static void ch7006_encoder_restore(struct drm_encoder *encoder)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);

	ch7006_dbg(client, "\n");

	ch7006_state_load(client, &priv->saved_state);
}

static bool ch7006_encoder_mode_fixup(struct drm_encoder *encoder,
				      struct drm_display_mode *mode,
				      struct drm_display_mode *adjusted_mode)
{
	struct ch7006_priv *priv = to_ch7006_priv(encoder);

	/* The ch7006 is painfully picky with the input timings so no
	 * custom modes for now... */

	priv->mode = ch7006_lookup_mode(encoder, mode);

	return !!priv->mode;
}

static int ch7006_encoder_mode_valid(struct drm_encoder *encoder,
				     struct drm_display_mode *mode)
{
	if (ch7006_lookup_mode(encoder, mode))
		return MODE_OK;
	else
		return MODE_BAD;
}

static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
				     struct drm_display_mode *drm_mode,
				     struct drm_display_mode *adjusted_mode)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct ch7006_encoder_params *params = &priv->params;
	struct ch7006_state *state = &priv->state;
	uint8_t *regs = state->regs;
	struct ch7006_mode *mode = priv->mode;
	struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
	int start_active;

	ch7006_dbg(client, "\n");

	regs[CH7006_DISPMODE] = norm->dispmode | mode->dispmode;
	regs[CH7006_BWIDTH] = 0;
	regs[CH7006_INPUT_FORMAT] = bitf(CH7006_INPUT_FORMAT_FORMAT,
					 params->input_format);

	regs[CH7006_CLKMODE] = CH7006_CLKMODE_SUBC_LOCK
		| bitf(CH7006_CLKMODE_XCM, params->xcm)
		| bitf(CH7006_CLKMODE_PCM, params->pcm);
	if (params->clock_mode)
		regs[CH7006_CLKMODE] |= CH7006_CLKMODE_MASTER;
	if (params->clock_edge)
		regs[CH7006_CLKMODE] |= CH7006_CLKMODE_POS_EDGE;

	start_active = (drm_mode->htotal & ~0x7) - (drm_mode->hsync_start & ~0x7);
	regs[CH7006_POV] = bitf(CH7006_POV_START_ACTIVE_8, start_active);
	regs[CH7006_START_ACTIVE] = bitf(CH7006_START_ACTIVE_0, start_active);

	regs[CH7006_INPUT_SYNC] = 0;
	if (params->sync_direction)
		regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_OUTPUT;
	if (params->sync_encoding)
		regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_EMBEDDED;
	if (drm_mode->flags & DRM_MODE_FLAG_PVSYNC)
		regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PVSYNC;
	if (drm_mode->flags & DRM_MODE_FLAG_PHSYNC)
		regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PHSYNC;

	regs[CH7006_DETECT] = 0;
	regs[CH7006_BCLKOUT] = 0;

	regs[CH7006_SUBC_INC3] = 0;
	if (params->pout_level)
		regs[CH7006_SUBC_INC3] |= CH7006_SUBC_INC3_POUT_3_3V;

	regs[CH7006_SUBC_INC4] = 0;
	if (params->active_detect)
		regs[CH7006_SUBC_INC4] |= CH7006_SUBC_INC4_DS_INPUT;

	regs[CH7006_PLL_CONTROL] = priv->saved_state.regs[CH7006_PLL_CONTROL];

	ch7006_setup_levels(encoder);
	ch7006_setup_subcarrier(encoder);
	ch7006_setup_pll(encoder);
	ch7006_setup_power_state(encoder);
	ch7006_setup_properties(encoder);

	ch7006_state_load(client, state);
}

static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
						       struct drm_connector *connector)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct ch7006_state *state = &priv->state;
	int det;

	ch7006_dbg(client, "\n");

	ch7006_save_reg(client, state, CH7006_DETECT);
	ch7006_save_reg(client, state, CH7006_POWER);
	ch7006_save_reg(client, state, CH7006_CLKMODE);

	ch7006_write(client, CH7006_POWER, CH7006_POWER_RESET |
					   bitfs(CH7006_POWER_LEVEL, NORMAL));
	ch7006_write(client, CH7006_CLKMODE, CH7006_CLKMODE_MASTER);

	ch7006_write(client, CH7006_DETECT, CH7006_DETECT_SENSE);

	ch7006_write(client, CH7006_DETECT, 0);

	det = ch7006_read(client, CH7006_DETECT);

	ch7006_load_reg(client, state, CH7006_CLKMODE);
	ch7006_load_reg(client, state, CH7006_POWER);
	ch7006_load_reg(client, state, CH7006_DETECT);

	if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
		    CH7006_DETECT_SVIDEO_C_TEST|
		    CH7006_DETECT_CVBS_TEST)) == 0)
		priv->subconnector = DRM_MODE_SUBCONNECTOR_SCART;
	else if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
			 CH7006_DETECT_SVIDEO_C_TEST)) == 0)
		priv->subconnector = DRM_MODE_SUBCONNECTOR_SVIDEO;
	else if ((det & CH7006_DETECT_CVBS_TEST) == 0)
		priv->subconnector = DRM_MODE_SUBCONNECTOR_Composite;
	else
		priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;

	drm_connector_property_set_value(connector,
			encoder->dev->mode_config.tv_subconnector_property,
							priv->subconnector);

	return priv->subconnector ? connector_status_connected :
					connector_status_disconnected;
}

static int ch7006_encoder_get_modes(struct drm_encoder *encoder,
				    struct drm_connector *connector)
{
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct ch7006_mode *mode;
	int n = 0;

	for (mode = ch7006_modes; mode->mode.clock; mode++) {
		if (~mode->valid_scales & 1<<priv->scale ||
		    ~mode->valid_norms & 1<<priv->norm)
			continue;

		drm_mode_probed_add(connector,
				drm_mode_duplicate(encoder->dev, &mode->mode));

		n++;
	}

	return n;
}

static int ch7006_encoder_create_resources(struct drm_encoder *encoder,
					   struct drm_connector *connector)
{
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct drm_device *dev = encoder->dev;
	struct drm_mode_config *conf = &dev->mode_config;

	drm_mode_create_tv_properties(dev, NUM_TV_NORMS, ch7006_tv_norm_names);

	priv->scale_property = drm_property_create(dev, DRM_MODE_PROP_RANGE,
						   "scale", 2);
	priv->scale_property->values[0] = 0;
	priv->scale_property->values[1] = 2;

	drm_connector_attach_property(connector, conf->tv_select_subconnector_property,
				      priv->select_subconnector);
	drm_connector_attach_property(connector, conf->tv_subconnector_property,
				      priv->subconnector);
	drm_connector_attach_property(connector, conf->tv_left_margin_property,
				      priv->hmargin);
	drm_connector_attach_property(connector, conf->tv_bottom_margin_property,
				      priv->vmargin);
	drm_connector_attach_property(connector, conf->tv_mode_property,
				      priv->norm);
	drm_connector_attach_property(connector, conf->tv_brightness_property,
				      priv->brightness);
	drm_connector_attach_property(connector, conf->tv_contrast_property,
				      priv->contrast);
	drm_connector_attach_property(connector, conf->tv_flicker_reduction_property,
				      priv->flicker);
	drm_connector_attach_property(connector, priv->scale_property,
				      priv->scale);

	return 0;
}

static int ch7006_encoder_set_property(struct drm_encoder *encoder,
				       struct drm_connector *connector,
				       struct drm_property *property,
				       uint64_t val)
{
	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	struct ch7006_state *state = &priv->state;
	struct drm_mode_config *conf = &encoder->dev->mode_config;
	struct drm_crtc *crtc = encoder->crtc;
	bool modes_changed = false;

	ch7006_dbg(client, "\n");

	if (property == conf->tv_select_subconnector_property) {
		priv->select_subconnector = val;

		ch7006_setup_power_state(encoder);

		ch7006_load_reg(client, state, CH7006_POWER);

	} else if (property == conf->tv_left_margin_property) {
		priv->hmargin = val;

		ch7006_setup_properties(encoder);

		ch7006_load_reg(client, state, CH7006_POV);
		ch7006_load_reg(client, state, CH7006_HPOS);

	} else if (property == conf->tv_bottom_margin_property) {
		priv->vmargin = val;

		ch7006_setup_properties(encoder);

		ch7006_load_reg(client, state, CH7006_POV);
		ch7006_load_reg(client, state, CH7006_VPOS);

	} else if (property == conf->tv_mode_property) {
		if (connector->dpms != DRM_MODE_DPMS_OFF)
			return -EINVAL;

		priv->norm = val;

		modes_changed = true;

	} else if (property == conf->tv_brightness_property) {
		priv->brightness = val;

		ch7006_setup_levels(encoder);

		ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);

	} else if (property == conf->tv_contrast_property) {
		priv->contrast = val;

		ch7006_setup_properties(encoder);

		ch7006_load_reg(client, state, CH7006_CONTRAST);

	} else if (property == conf->tv_flicker_reduction_property) {
		priv->flicker = val;

		ch7006_setup_properties(encoder);

		ch7006_load_reg(client, state, CH7006_FFILTER);

	} else if (property == priv->scale_property) {
		if (connector->dpms != DRM_MODE_DPMS_OFF)
			return -EINVAL;

		priv->scale = val;

		modes_changed = true;

	} else {
		return -EINVAL;
	}

	if (modes_changed) {
		drm_helper_probe_single_connector_modes(connector, 0, 0);

		/* Disable the crtc to ensure a full modeset is
		 * performed whenever it's turned on again. */
		if (crtc) {
			struct drm_mode_set modeset = {
				.crtc = crtc,
			};

			crtc->funcs->set_config(&modeset);
		}
	}

	return 0;
}

static struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
	.set_config = ch7006_encoder_set_config,
	.destroy = ch7006_encoder_destroy,
	.dpms = ch7006_encoder_dpms,
	.save = ch7006_encoder_save,
	.restore = ch7006_encoder_restore,
	.mode_fixup = ch7006_encoder_mode_fixup,
	.mode_valid = ch7006_encoder_mode_valid,
	.mode_set = ch7006_encoder_mode_set,
	.detect = ch7006_encoder_detect,
	.get_modes = ch7006_encoder_get_modes,
	.create_resources = ch7006_encoder_create_resources,
	.set_property = ch7006_encoder_set_property,
};


/* I2C driver functions */

static int ch7006_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
	uint8_t addr = CH7006_VERSION_ID;
	uint8_t val;
	int ret;

	ch7006_dbg(client, "\n");

	ret = i2c_master_send(client, &addr, sizeof(addr));
	if (ret < 0)
		goto fail;

	ret = i2c_master_recv(client, &val, sizeof(val));
	if (ret < 0)
		goto fail;

	ch7006_info(client, "Detected version ID: %x\n", val);

	/* I don't know what this is for, but otherwise I get no
	 * signal.
	 */
	ch7006_write(client, 0x3d, 0x0);

	return 0;

fail:
	ch7006_err(client, "Error %d reading version ID\n", ret);

	return -ENODEV;
}

static int ch7006_remove(struct i2c_client *client)
{
	ch7006_dbg(client, "\n");

	return 0;
}

static int ch7006_suspend(struct i2c_client *client, pm_message_t mesg)
{
	ch7006_dbg(client, "\n");

	return 0;
}

static int ch7006_resume(struct i2c_client *client)
{
	ch7006_dbg(client, "\n");

	ch7006_write(client, 0x3d, 0x0);

	return 0;
}

static int ch7006_encoder_init(struct i2c_client *client,
			       struct drm_device *dev,
			       struct drm_encoder_slave *encoder)
{
	struct ch7006_priv *priv;
	int i;

	ch7006_dbg(client, "\n");

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	encoder->slave_priv = priv;
	encoder->slave_funcs = &ch7006_encoder_funcs;

	priv->norm = TV_NORM_PAL;
	priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
	priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
	priv->scale = 1;
	priv->contrast = 50;
	priv->brightness = 50;
	priv->flicker = 50;
	priv->hmargin = 50;
	priv->vmargin = 50;
	priv->last_dpms = -1;
	priv->chip_version = ch7006_read(client, CH7006_VERSION_ID);

	if (ch7006_tv_norm) {
		for (i = 0; i < NUM_TV_NORMS; i++) {
			if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
				priv->norm = i;
				break;
			}
		}

		if (i == NUM_TV_NORMS)
			ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
				   ch7006_tv_norm);
	}

	if (ch7006_scale >= 0 && ch7006_scale <= 2)
		priv->scale = ch7006_scale;
	else
		ch7006_err(client, "Invalid scale setting \"%d\".\n",
			   ch7006_scale);

	return 0;
}

static struct i2c_device_id ch7006_ids[] = {
	{ "ch7006", 0 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, ch7006_ids);

static struct drm_i2c_encoder_driver ch7006_driver = {
	.i2c_driver = {
		.probe = ch7006_probe,
		.remove = ch7006_remove,
		.suspend = ch7006_suspend,
		.resume = ch7006_resume,

		.driver = {
			.name = "ch7006",
		},

		.id_table = ch7006_ids,
	},

	.encoder_init = ch7006_encoder_init,
};


/* Module initialization */

static int __init ch7006_init(void)
{
	return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
}

static void __exit ch7006_exit(void)
{
	drm_i2c_encoder_unregister(&ch7006_driver);
}

int ch7006_debug;
module_param_named(debug, ch7006_debug, int, 0600);
MODULE_PARM_DESC(debug, "Enable debug output.");

char *ch7006_tv_norm;
module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
		 "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, PAL-60, NTSC-M, NTSC-J.\n"
		 "\t\tDefault: PAL");

int ch7006_scale = 1;
module_param_named(scale, ch7006_scale, int, 0600);
MODULE_PARM_DESC(scale, "Default scale.\n"
		 "\t\tSupported: 0 -> Select video modes with a higher blanking ratio.\n"
		 "\t\t\t1 -> Select default video modes.\n"
		 "\t\t\t2 -> Select video modes with a lower blanking ratio.");

MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
MODULE_LICENSE("GPL and additional rights");

module_init(ch7006_init);
module_exit(ch7006_exit);
Commit	Line	Data
6ee73861 BS	1	/*
	2	* Copyright (C) 2009 Francisco Jerez.
	3	* All Rights Reserved.
	4	*
	5	* Permission is hereby granted, free of charge, to any person obtaining
	6	* a copy of this software and associated documentation files (the
	7	* "Software"), to deal in the Software without restriction, including
	8	* without limitation the rights to use, copy, modify, merge, publish,
	9	* distribute, sublicense, and/or sell copies of the Software, and to
	10	* permit persons to whom the Software is furnished to do so, subject to
	11	* the following conditions:
	12	*
	13	* The above copyright notice and this permission notice (including the
	14	* next paragraph) shall be included in all copies or substantial
	15	* portions of the Software.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	19	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
	20	* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
	21	* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
	22	* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
	23	* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	24	*
	25	*/
	26
e0cd3608 PG	27	#include <linux/module.h>
e0cd3608 PG	28
6ee73861 BS	29	#include "ch7006_priv.h"
	30
	31	/* DRM encoder functions */
	32
	33	static void ch7006_encoder_set_config(struct drm_encoder *encoder,
	34	void *params)
	35	{
	36	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	37
6d6a413a	38	priv->params = (struct ch7006_encoder_params )params;
6ee73861 BS	39	}
	40
	41	static void ch7006_encoder_destroy(struct drm_encoder *encoder)
	42	{
	43	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	44
	45	drm_property_destroy(encoder->dev, priv->scale_property);
	46
	47	kfree(priv);
	48	to_encoder_slave(encoder)->slave_priv = NULL;
	49
	50	drm_i2c_encoder_destroy(encoder);
	51	}
	52
	53	static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
	54	{
	55	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	56	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	57	struct ch7006_state *state = &priv->state;
	58
	59	ch7006_dbg(client, "\n");
	60
	61	if (mode == priv->last_dpms)
	62	return;
	63	priv->last_dpms = mode;
	64
	65	ch7006_setup_power_state(encoder);
	66
	67	ch7006_load_reg(client, state, CH7006_POWER);
	68	}
	69
	70	static void ch7006_encoder_save(struct drm_encoder *encoder)
	71	{
	72	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	73	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	74
	75	ch7006_dbg(client, "\n");
	76
	77	ch7006_state_save(client, &priv->saved_state);
	78	}
	79
	80	static void ch7006_encoder_restore(struct drm_encoder *encoder)
	81	{
	82	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	83	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	84
	85	ch7006_dbg(client, "\n");
	86
	87	ch7006_state_load(client, &priv->saved_state);
	88	}
	89
	90	static bool ch7006_encoder_mode_fixup(struct drm_encoder *encoder,
	91	struct drm_display_mode *mode,
	92	struct drm_display_mode *adjusted_mode)
	93	{
	94	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	95
	96	/* The ch7006 is painfully picky with the input timings so no
	97	* custom modes for now... */
	98
	99	priv->mode = ch7006_lookup_mode(encoder, mode);
	100
	101	return !!priv->mode;
	102	}
103
104	static int ch7006_encoder_mode_valid(struct drm_encoder *encoder,
105	struct drm_display_mode *mode)
106	{
107	if (ch7006_lookup_mode(encoder, mode))
108	return MODE_OK;
109	else
110	return MODE_BAD;
111	}
112
113	static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
114	struct drm_display_mode *drm_mode,
115	struct drm_display_mode *adjusted_mode)
116	{
117	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
118	struct ch7006_priv *priv = to_ch7006_priv(encoder);
6d6a413a	119	struct ch7006_encoder_params *params = &priv->params;
6ee73861 BS	120	struct ch7006_state *state = &priv->state;
	121	uint8_t *regs = state->regs;
	122	struct ch7006_mode *mode = priv->mode;
	123	struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
	124	int start_active;
	125
	126	ch7006_dbg(client, "\n");
	127
	128	regs[CH7006_DISPMODE] = norm->dispmode \| mode->dispmode;
	129	regs[CH7006_BWIDTH] = 0;
	130	regs[CH7006_INPUT_FORMAT] = bitf(CH7006_INPUT_FORMAT_FORMAT,
	131	params->input_format);
	132
	133	regs[CH7006_CLKMODE] = CH7006_CLKMODE_SUBC_LOCK
	134	\| bitf(CH7006_CLKMODE_XCM, params->xcm)
	135	\| bitf(CH7006_CLKMODE_PCM, params->pcm);
	136	if (params->clock_mode)
	137	regs[CH7006_CLKMODE] \|= CH7006_CLKMODE_MASTER;
	138	if (params->clock_edge)
	139	regs[CH7006_CLKMODE] \|= CH7006_CLKMODE_POS_EDGE;
	140
	141	start_active = (drm_mode->htotal & ~0x7) - (drm_mode->hsync_start & ~0x7);
	142	regs[CH7006_POV] = bitf(CH7006_POV_START_ACTIVE_8, start_active);
	143	regs[CH7006_START_ACTIVE] = bitf(CH7006_START_ACTIVE_0, start_active);
	144
	145	regs[CH7006_INPUT_SYNC] = 0;
	146	if (params->sync_direction)
	147	regs[CH7006_INPUT_SYNC] \|= CH7006_INPUT_SYNC_OUTPUT;
	148	if (params->sync_encoding)
	149	regs[CH7006_INPUT_SYNC] \|= CH7006_INPUT_SYNC_EMBEDDED;
	150	if (drm_mode->flags & DRM_MODE_FLAG_PVSYNC)
	151	regs[CH7006_INPUT_SYNC] \|= CH7006_INPUT_SYNC_PVSYNC;
	152	if (drm_mode->flags & DRM_MODE_FLAG_PHSYNC)
	153	regs[CH7006_INPUT_SYNC] \|= CH7006_INPUT_SYNC_PHSYNC;
	154
	155	regs[CH7006_DETECT] = 0;
	156	regs[CH7006_BCLKOUT] = 0;
	157
	158	regs[CH7006_SUBC_INC3] = 0;
	159	if (params->pout_level)
	160	regs[CH7006_SUBC_INC3] \|= CH7006_SUBC_INC3_POUT_3_3V;
	161
	162	regs[CH7006_SUBC_INC4] = 0;
	163	if (params->active_detect)
	164	regs[CH7006_SUBC_INC4] \|= CH7006_SUBC_INC4_DS_INPUT;
	165
	166	regs[CH7006_PLL_CONTROL] = priv->saved_state.regs[CH7006_PLL_CONTROL];
	167
	168	ch7006_setup_levels(encoder);
	169	ch7006_setup_subcarrier(encoder);
	170	ch7006_setup_pll(encoder);
	171	ch7006_setup_power_state(encoder);
	172	ch7006_setup_properties(encoder);
	173
	174	ch7006_state_load(client, state);
	175	}
	176
	177	static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
	178	struct drm_connector *connector)
	179	{
	180	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
	181	struct ch7006_priv *priv = to_ch7006_priv(encoder);
	182	struct ch7006_state *state = &priv->state;
	183	int det;
184
185	ch7006_dbg(client, "\n");
186
187	ch7006_save_reg(client, state, CH7006_DETECT);
188	ch7006_save_reg(client, state, CH7006_POWER);
189	ch7006_save_reg(client, state, CH7006_CLKMODE);
190
191	ch7006_write(client, CH7006_POWER, CH7006_POWER_RESET \|
192	bitfs(CH7006_POWER_LEVEL, NORMAL));
193	ch7006_write(client, CH7006_CLKMODE, CH7006_CLKMODE_MASTER);
194
195	ch7006_write(client, CH7006_DETECT, CH7006_DETECT_SENSE);
196
197	ch7006_write(client, CH7006_DETECT, 0);
198
199	det = ch7006_read(client, CH7006_DETECT);
200
201	ch7006_load_reg(client, state, CH7006_CLKMODE);
202	ch7006_load_reg(client, state, CH7006_POWER);
203	ch7006_load_reg(client, state, CH7006_DETECT);
204
205	if ((det & (CH7006_DETECT_SVIDEO_Y_TEST\|
206	CH7006_DETECT_SVIDEO_C_TEST\|
207	CH7006_DETECT_CVBS_TEST)) == 0)
208	priv->subconnector = DRM_MODE_SUBCONNECTOR_SCART;
209	else if ((det & (CH7006_DETECT_SVIDEO_Y_TEST\|
210	CH7006_DETECT_SVIDEO_C_TEST)) == 0)
211	priv->subconnector = DRM_MODE_SUBCONNECTOR_SVIDEO;
212	else if ((det & CH7006_DETECT_CVBS_TEST) == 0)
213	priv->subconnector = DRM_MODE_SUBCONNECTOR_Composite;
214	else
215	priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
216
217	drm_connector_property_set_value(connector,
218	encoder->dev->mode_config.tv_subconnector_property,
219	priv->subconnector);
220
221	return priv->subconnector ? connector_status_connected :
222	connector_status_disconnected;
223	}
224
225	static int ch7006_encoder_get_modes(struct drm_encoder *encoder,
226	struct drm_connector *connector)
227	{
228	struct ch7006_priv *priv = to_ch7006_priv(encoder);
229	struct ch7006_mode *mode;
230	int n = 0;
231
232	for (mode = ch7006_modes; mode->mode.clock; mode++) {
233	if (~mode->valid_scales & 1<<priv->scale \|\|
234	~mode->valid_norms & 1<<priv->norm)
235	continue;
236
237	drm_mode_probed_add(connector,
238	drm_mode_duplicate(encoder->dev, &mode->mode));
239
240	n++;
241	}
242
243	return n;
244	}
245
246	static int ch7006_encoder_create_resources(struct drm_encoder *encoder,
247	struct drm_connector *connector)
248	{
249	struct ch7006_priv *priv = to_ch7006_priv(encoder);
250	struct drm_device *dev = encoder->dev;
251	struct drm_mode_config *conf = &dev->mode_config;
252
253	drm_mode_create_tv_properties(dev, NUM_TV_NORMS, ch7006_tv_norm_names);
254
255	priv->scale_property = drm_property_create(dev, DRM_MODE_PROP_RANGE,
256	"scale", 2);
257	priv->scale_property->values[0] = 0;
258	priv->scale_property->values[1] = 2;
259
260	drm_connector_attach_property(connector, conf->tv_select_subconnector_property,
261	priv->select_subconnector);
262	drm_connector_attach_property(connector, conf->tv_subconnector_property,
263	priv->subconnector);
264	drm_connector_attach_property(connector, conf->tv_left_margin_property,
265	priv->hmargin);
266	drm_connector_attach_property(connector, conf->tv_bottom_margin_property,
267	priv->vmargin);
268	drm_connector_attach_property(connector, conf->tv_mode_property,
269	priv->norm);
270	drm_connector_attach_property(connector, conf->tv_brightness_property,
271	priv->brightness);
272	drm_connector_attach_property(connector, conf->tv_contrast_property,
273	priv->contrast);
274	drm_connector_attach_property(connector, conf->tv_flicker_reduction_property,
275	priv->flicker);
276	drm_connector_attach_property(connector, priv->scale_property,
277	priv->scale);
278
279	return 0;
280	}
281
282	static int ch7006_encoder_set_property(struct drm_encoder *encoder,
283	struct drm_connector *connector,
284	struct drm_property *property,
285	uint64_t val)
286	{
287	struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
288	struct ch7006_priv *priv = to_ch7006_priv(encoder);
289	struct ch7006_state *state = &priv->state;
290	struct drm_mode_config *conf = &encoder->dev->mode_config;
291	struct drm_crtc *crtc = encoder->crtc;
292	bool modes_changed = false;
293
294	ch7006_dbg(client, "\n");
295
296	if (property == conf->tv_select_subconnector_property) {
297	priv->select_subconnector = val;
298
299	ch7006_setup_power_state(encoder);
300
301	ch7006_load_reg(client, state, CH7006_POWER);
302
303	} else if (property == conf->tv_left_margin_property) {
304	priv->hmargin = val;
305
306	ch7006_setup_properties(encoder);
307
308	ch7006_load_reg(client, state, CH7006_POV);
309	ch7006_load_reg(client, state, CH7006_HPOS);
310
311	} else if (property == conf->tv_bottom_margin_property) {
312	priv->vmargin = val;
313
314	ch7006_setup_properties(encoder);
315
316	ch7006_load_reg(client, state, CH7006_POV);
317	ch7006_load_reg(client, state, CH7006_VPOS);
318
319	} else if (property == conf->tv_mode_property) {
320	if (connector->dpms != DRM_MODE_DPMS_OFF)
321	return -EINVAL;
322
323	priv->norm = val;
324
325	modes_changed = true;
326
327	} else if (property == conf->tv_brightness_property) {
328	priv->brightness = val;
329
330	ch7006_setup_levels(encoder);
331
332	ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);
333
334	} else if (property == conf->tv_contrast_property) {
335	priv->contrast = val;
336
337	ch7006_setup_properties(encoder);
338
339	ch7006_load_reg(client, state, CH7006_CONTRAST);
340
341	} else if (property == conf->tv_flicker_reduction_property) {
342	priv->flicker = val;
343
344	ch7006_setup_properties(encoder);
345
346	ch7006_load_reg(client, state, CH7006_FFILTER);
347
348	} else if (property == priv->scale_property) {
349	if (connector->dpms != DRM_MODE_DPMS_OFF)
350	return -EINVAL;
351
352	priv->scale = val;
353
354	modes_changed = true;
355
356	} else {
357	return -EINVAL;
358	}
359
360	if (modes_changed) {
361	drm_helper_probe_single_connector_modes(connector, 0, 0);
362
363	/* Disable the crtc to ensure a full modeset is
364	* performed whenever it's turned on again. */
365	if (crtc) {
366	struct drm_mode_set modeset = {
367	.crtc = crtc,
368	};
369
370	crtc->funcs->set_config(&modeset);
371	}
372	}
373
374	return 0;
375	}
376
377	static struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
378	.set_config = ch7006_encoder_set_config,
379	.destroy = ch7006_encoder_destroy,
380	.dpms = ch7006_encoder_dpms,
381	.save = ch7006_encoder_save,
382	.restore = ch7006_encoder_restore,
383	.mode_fixup = ch7006_encoder_mode_fixup,
384	.mode_valid = ch7006_encoder_mode_valid,
385	.mode_set = ch7006_encoder_mode_set,
386	.detect = ch7006_encoder_detect,
387	.get_modes = ch7006_encoder_get_modes,
388	.create_resources = ch7006_encoder_create_resources,
389	.set_property = ch7006_encoder_set_property,
390	};
391
392
393	/* I2C driver functions */
394
395	static int ch7006_probe(struct i2c_client client, const struct i2c_device_id id)
396	{
397	uint8_t addr = CH7006_VERSION_ID;
398	uint8_t val;
399	int ret;
400
401	ch7006_dbg(client, "\n");
402
403	ret = i2c_master_send(client, &addr, sizeof(addr));
404	if (ret < 0)
405	goto fail;
406
407	ret = i2c_master_recv(client, &val, sizeof(val));
408	if (ret < 0)
409	goto fail;
410
411	ch7006_info(client, "Detected version ID: %x\n", val);
412
dc4a684a FJ	413	/* I don't know what this is for, but otherwise I get no
	414	* signal.
	415	*/
	416	ch7006_write(client, 0x3d, 0x0);
	417
6ee73861 BS	418	return 0;
	419
	420	fail:
	421	ch7006_err(client, "Error %d reading version ID\n", ret);
	422
	423	return -ENODEV;
	424	}
	425
	426	static int ch7006_remove(struct i2c_client *client)
	427	{
	428	ch7006_dbg(client, "\n");
	429
	430	return 0;
	431	}
	432
0edeb0c0 FJ	433	static int ch7006_suspend(struct i2c_client *client, pm_message_t mesg)
	434	{
	435	ch7006_dbg(client, "\n");
	436
	437	return 0;
	438	}
	439
	440	static int ch7006_resume(struct i2c_client *client)
	441	{
	442	ch7006_dbg(client, "\n");
	443
	444	ch7006_write(client, 0x3d, 0x0);
	445
	446	return 0;
	447	}
	448
6ee73861 BS	449	static int ch7006_encoder_init(struct i2c_client *client,
	450	struct drm_device *dev,
	451	struct drm_encoder_slave *encoder)
	452	{
	453	struct ch7006_priv *priv;
	454	int i;
	455
	456	ch7006_dbg(client, "\n");
	457
	458	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	459	if (!priv)
	460	return -ENOMEM;
	461
	462	encoder->slave_priv = priv;
	463	encoder->slave_funcs = &ch7006_encoder_funcs;
	464
	465	priv->norm = TV_NORM_PAL;
	466	priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
	467	priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
	468	priv->scale = 1;
	469	priv->contrast = 50;
	470	priv->brightness = 50;
	471	priv->flicker = 50;
	472	priv->hmargin = 50;
	473	priv->vmargin = 50;
	474	priv->last_dpms = -1;
c93ebb40	475	priv->chip_version = ch7006_read(client, CH7006_VERSION_ID);
6ee73861 BS	476
	477	if (ch7006_tv_norm) {
	478	for (i = 0; i < NUM_TV_NORMS; i++) {
	479	if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
	480	priv->norm = i;
	481	break;
	482	}
	483	}
	484
	485	if (i == NUM_TV_NORMS)
	486	ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
	487	ch7006_tv_norm);
	488	}
	489
	490	if (ch7006_scale >= 0 && ch7006_scale <= 2)
	491	priv->scale = ch7006_scale;
	492	else
	493	ch7006_err(client, "Invalid scale setting \"%d\".\n",
	494	ch7006_scale);
	495
	496	return 0;
	497	}
	498
	499	static struct i2c_device_id ch7006_ids[] = {
	500	{ "ch7006", 0 },
	501	{ }
	502	};
	503	MODULE_DEVICE_TABLE(i2c, ch7006_ids);
	504
	505	static struct drm_i2c_encoder_driver ch7006_driver = {
	506	.i2c_driver = {
	507	.probe = ch7006_probe,
	508	.remove = ch7006_remove,
0edeb0c0 FJ	509	.suspend = ch7006_suspend,
0edeb0c0 FJ	510	.resume = ch7006_resume,
6ee73861 BS	511
	512	.driver = {
	513	.name = "ch7006",
	514	},
	515
	516	.id_table = ch7006_ids,
	517	},
	518
	519	.encoder_init = ch7006_encoder_init,
	520	};
	521
	522
	523	/* Module initialization */
	524
	525	static int __init ch7006_init(void)
	526	{
	527	return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
	528	}
	529
	530	static void __exit ch7006_exit(void)
	531	{
	532	drm_i2c_encoder_unregister(&ch7006_driver);
	533	}
	534
	535	int ch7006_debug;
	536	module_param_named(debug, ch7006_debug, int, 0600);
	537	MODULE_PARM_DESC(debug, "Enable debug output.");
	538
	539	char *ch7006_tv_norm;
	540	module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
	541	MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
	542	"\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, PAL-60, NTSC-M, NTSC-J.\n"
	543	"\t\tDefault: PAL");
	544
	545	int ch7006_scale = 1;
	546	module_param_named(scale, ch7006_scale, int, 0600);
	547	MODULE_PARM_DESC(scale, "Default scale.\n"
	548	"\t\tSupported: 0 -> Select video modes with a higher blanking ratio.\n"
	549	"\t\t\t1 -> Select default video modes.\n"
	550	"\t\t\t2 -> Select video modes with a lower blanking ratio.");
	551
	552	MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
	553	MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
	554	MODULE_LICENSE("GPL and additional rights");
	555
	556	module_init(ch7006_init);
	557	module_exit(ch7006_exit);