[net-next-2.6.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 "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 = 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_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;

	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,

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