drivers/gpu/drm/nouveau/nv04_tv.c - kernel/msm-4.9 - Gitiles

 /*
  * 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 "drmP.h"
 #include "nouveau_drv.h"
 #include "nouveau_encoder.h"
 #include "nouveau_connector.h"
 #include "nouveau_crtc.h"
 #include "nouveau_hw.h"
 #include "drm_crtc_helper.h"

 #include "i2c/ch7006.h"

 static struct {
 	struct i2c_board_info board_info;
 	struct drm_encoder_funcs funcs;
 	struct drm_encoder_helper_funcs hfuncs;
 	void *params;

 } nv04_tv_encoder_info[] = {
 	{
 		.board_info = { I2C_BOARD_INFO("ch7006", 0x75) },
 		.params = &(struct ch7006_encoder_params) {
 			CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
 			0, 0, 0,
 			CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
 			CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
 		},
 	},
 };

 static bool probe_i2c_addr(struct i2c_adapter *adapter, int addr)
 {
 	struct i2c_msg msg = {
 		.addr = addr,
 		.len = 0,
 	};

 	return i2c_transfer(adapter, &msg, 1) == 1;
 }

 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
 {
 	struct nouveau_i2c_chan *i2c;
 	bool was_locked;
 	int i, ret;

 	NV_TRACE(dev, "Probing TV encoders on I2C bus: %d\n", i2c_index);

 	i2c = nouveau_i2c_find(dev, i2c_index);
 	if (!i2c)
 		return -ENODEV;

 	was_locked = NVLockVgaCrtcs(dev, false);

 	for (i = 0; i < ARRAY_SIZE(nv04_tv_encoder_info); i++) {
 		if (probe_i2c_addr(&i2c->adapter,
 				   nv04_tv_encoder_info[i].board_info.addr)) {
 			ret = i;
 			break;
 		}
 	}

 	if (i < ARRAY_SIZE(nv04_tv_encoder_info)) {
 		NV_TRACE(dev, "Detected TV encoder: %s\n",
 			 nv04_tv_encoder_info[i].board_info.type);

 	} else {
 		NV_TRACE(dev, "No TV encoders found.\n");
 		i = -ENODEV;
 	}

 	NVLockVgaCrtcs(dev, was_locked);
 	return i;
 }

 #define PLLSEL_TV_CRTC1_MASK				\
 	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1		\
 	 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
 #define PLLSEL_TV_CRTC2_MASK				\
 	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2		\
 	 | NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)

 static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
 {
 	struct drm_device *dev = encoder->dev;
 	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nv04_mode_state *state = &dev_priv->mode_reg;
 	uint8_t crtc1A;

 	NV_INFO(dev, "Setting dpms mode %d on TV encoder (output %d)\n",
 		mode, nv_encoder->dcb->index);

 	state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK | PLLSEL_TV_CRTC2_MASK);

 	if (mode == DRM_MODE_DPMS_ON) {
 		int head = nouveau_crtc(encoder->crtc)->index;
 		crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);

 		state->pllsel |= head ? PLLSEL_TV_CRTC2_MASK :
 					PLLSEL_TV_CRTC1_MASK;

 		/* Inhibit hsync */
 		crtc1A |= 0x80;

 		NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
 	}

 	NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);

 	to_encoder_slave(encoder)->slave_funcs->dpms(encoder, mode);
 }

 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nv04_crtc_reg *state = &dev_priv->mode_reg.crtc_reg[head];

 	state->tv_setup = 0;

 	if (bind) {
 		state->CRTC[NV_CIO_CRE_LCD__INDEX] = 0;
 		state->CRTC[NV_CIO_CRE_49] |= 0x10;
 	} else {
 		state->CRTC[NV_CIO_CRE_49] &= ~0x10;
 	}

 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
 		       state->CRTC[NV_CIO_CRE_LCD__INDEX]);
 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
 		       state->CRTC[NV_CIO_CRE_49]);
 	NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
 		      state->tv_setup);
 }

 static void nv04_tv_prepare(struct drm_encoder *encoder)
 {
 	struct drm_device *dev = encoder->dev;
 	int head = nouveau_crtc(encoder->crtc)->index;
 	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

 	helper->dpms(encoder, DRM_MODE_DPMS_OFF);

 	nv04_dfp_disable(dev, head);

 	if (nv_two_heads(dev))
 		nv04_tv_bind(dev, head ^ 1, false);

 	nv04_tv_bind(dev, head, true);
 }

 static void nv04_tv_mode_set(struct drm_encoder *encoder,
 			     struct drm_display_mode *mode,
 			     struct drm_display_mode *adjusted_mode)
 {
 	struct drm_device *dev = encoder->dev;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 	struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];

 	regp->tv_htotal = adjusted_mode->htotal;
 	regp->tv_vtotal = adjusted_mode->vtotal;

 	/* These delay the TV signals with respect to the VGA port,
 	 * they might be useful if we ever allow a CRTC to drive
 	 * multiple outputs.
 	 */
 	regp->tv_hskew = 1;
 	regp->tv_hsync_delay = 1;
 	regp->tv_hsync_delay2 = 64;
 	regp->tv_vskew = 1;
 	regp->tv_vsync_delay = 1;

 	to_encoder_slave(encoder)->slave_funcs->mode_set(encoder, mode, adjusted_mode);
 }

 static void nv04_tv_commit(struct drm_encoder *encoder)
 {
 	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 	struct drm_device *dev = encoder->dev;
 	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

 	helper->dpms(encoder, DRM_MODE_DPMS_ON);

 	NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
 		      drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
 		      '@' + ffs(nv_encoder->dcb->or));
 }

 static void nv04_tv_destroy(struct drm_encoder *encoder)
 {
 	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);

 	to_encoder_slave(encoder)->slave_funcs->destroy(encoder);

 	drm_encoder_cleanup(encoder);

 	kfree(nv_encoder);
 }

 int nv04_tv_create(struct drm_device *dev, struct dcb_entry *entry)
 {
 	struct nouveau_encoder *nv_encoder;
 	struct drm_encoder *encoder;
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 	struct i2c_adapter *adap;
 	struct drm_encoder_funcs *funcs = NULL;
 	struct drm_encoder_helper_funcs *hfuncs = NULL;
 	struct drm_encoder_slave_funcs *sfuncs = NULL;
 	int i2c_index = entry->i2c_index;
 	int type, ret;
 	bool was_locked;

 	/* Ensure that we can talk to this encoder */
 	type = nv04_tv_identify(dev, i2c_index);
 	if (type < 0)
 		return type;

 	/* Allocate the necessary memory */
 	nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
 	if (!nv_encoder)
 		return -ENOMEM;

 	/* Initialize the common members */
 	encoder = to_drm_encoder(nv_encoder);

 	funcs = &nv04_tv_encoder_info[type].funcs;
 	hfuncs = &nv04_tv_encoder_info[type].hfuncs;

 	drm_encoder_init(dev, encoder, funcs, DRM_MODE_ENCODER_TVDAC);
 	drm_encoder_helper_add(encoder, hfuncs);

 	encoder->possible_crtcs = entry->heads;
 	encoder->possible_clones = 0;

 	nv_encoder->dcb = entry;
 	nv_encoder->or = ffs(entry->or) - 1;

 	/* Run the slave-specific initialization */
 	adap = &dev_priv->vbios.dcb.i2c[i2c_index].chan->adapter;

 	was_locked = NVLockVgaCrtcs(dev, false);

 	ret = drm_i2c_encoder_init(encoder->dev, to_encoder_slave(encoder), adap,
 				   &nv04_tv_encoder_info[type].board_info);

 	NVLockVgaCrtcs(dev, was_locked);

 	if (ret < 0)
 		goto fail;

 	/* Fill the function pointers */
 	sfuncs = to_encoder_slave(encoder)->slave_funcs;

 	*funcs = (struct drm_encoder_funcs) {
 		.destroy = nv04_tv_destroy,
 	};

 	*hfuncs = (struct drm_encoder_helper_funcs) {
 		.dpms = nv04_tv_dpms,
 		.save = sfuncs->save,
 		.restore = sfuncs->restore,
 		.mode_fixup = sfuncs->mode_fixup,
 		.prepare = nv04_tv_prepare,
 		.commit = nv04_tv_commit,
 		.mode_set = nv04_tv_mode_set,
 		.detect = sfuncs->detect,
 	};

 	/* Set the slave encoder configuration */
 	sfuncs->set_config(encoder, nv04_tv_encoder_info[type].params);

 	return 0;

 fail:
 	drm_encoder_cleanup(encoder);

 	kfree(nv_encoder);
 	return ret;
 }
	/*
	* 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 "drmP.h"
	#include "nouveau_drv.h"
	#include "nouveau_encoder.h"
	#include "nouveau_connector.h"
	#include "nouveau_crtc.h"
	#include "nouveau_hw.h"
	#include "drm_crtc_helper.h"

	#include "i2c/ch7006.h"

	static struct {
	struct i2c_board_info board_info;
	struct drm_encoder_funcs funcs;
	struct drm_encoder_helper_funcs hfuncs;
	void *params;

	} nv04_tv_encoder_info[] = {
	{
	.board_info = { I2C_BOARD_INFO("ch7006", 0x75) },
	.params = &(struct ch7006_encoder_params) {
	CH7006_FORMAT_RGB24m12I, CH7006_CLOCK_MASTER,
	0, 0, 0,
	CH7006_SYNC_SLAVE, CH7006_SYNC_SEPARATED,
	CH7006_POUT_3_3V, CH7006_ACTIVE_HSYNC
	},
	},
	};

	static bool probe_i2c_addr(struct i2c_adapter *adapter, int addr)
	{
	struct i2c_msg msg = {
	.addr = addr,
	.len = 0,
	};

	return i2c_transfer(adapter, &msg, 1) == 1;
	}

	int nv04_tv_identify(struct drm_device *dev, int i2c_index)
	{
	struct nouveau_i2c_chan *i2c;
	bool was_locked;
	int i, ret;

	NV_TRACE(dev, "Probing TV encoders on I2C bus: %d\n", i2c_index);

	i2c = nouveau_i2c_find(dev, i2c_index);
	if (!i2c)
	return -ENODEV;

	was_locked = NVLockVgaCrtcs(dev, false);

	for (i = 0; i < ARRAY_SIZE(nv04_tv_encoder_info); i++) {
	if (probe_i2c_addr(&i2c->adapter,
	nv04_tv_encoder_info[i].board_info.addr)) {
	ret = i;
	break;
	}
	}

	if (i < ARRAY_SIZE(nv04_tv_encoder_info)) {
	NV_TRACE(dev, "Detected TV encoder: %s\n",
	nv04_tv_encoder_info[i].board_info.type);

	} else {
	NV_TRACE(dev, "No TV encoders found.\n");
	i = -ENODEV;
	}

	NVLockVgaCrtcs(dev, was_locked);
	return i;
	}

	#define PLLSEL_TV_CRTC1_MASK \
	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK1 \
	\| NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK1)
	#define PLLSEL_TV_CRTC2_MASK \
	(NV_PRAMDAC_PLL_COEFF_SELECT_TV_VSCLK2 \
	\| NV_PRAMDAC_PLL_COEFF_SELECT_TV_PCLK2)

	static void nv04_tv_dpms(struct drm_encoder *encoder, int mode)
	{
	struct drm_device *dev = encoder->dev;
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_mode_state *state = &dev_priv->mode_reg;
	uint8_t crtc1A;

	NV_INFO(dev, "Setting dpms mode %d on TV encoder (output %d)\n",
	mode, nv_encoder->dcb->index);

	state->pllsel &= ~(PLLSEL_TV_CRTC1_MASK \| PLLSEL_TV_CRTC2_MASK);

	if (mode == DRM_MODE_DPMS_ON) {
	int head = nouveau_crtc(encoder->crtc)->index;
	crtc1A = NVReadVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX);

	state->pllsel \|= head ? PLLSEL_TV_CRTC2_MASK :
	PLLSEL_TV_CRTC1_MASK;

	/* Inhibit hsync */
	crtc1A \|= 0x80;

	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_RPC1_INDEX, crtc1A);
	}

	NVWriteRAMDAC(dev, 0, NV_PRAMDAC_PLL_COEFF_SELECT, state->pllsel);

	to_encoder_slave(encoder)->slave_funcs->dpms(encoder, mode);
	}

	static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
	{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv04_crtc_reg *state = &dev_priv->mode_reg.crtc_reg[head];

	state->tv_setup = 0;

	if (bind) {
	state->CRTC[NV_CIO_CRE_LCD__INDEX] = 0;
	state->CRTC[NV_CIO_CRE_49] \|= 0x10;
	} else {
	state->CRTC[NV_CIO_CRE_49] &= ~0x10;
	}

	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_LCD__INDEX,
	state->CRTC[NV_CIO_CRE_LCD__INDEX]);
	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_49,
	state->CRTC[NV_CIO_CRE_49]);
	NVWriteRAMDAC(dev, head, NV_PRAMDAC_TV_SETUP,
	state->tv_setup);
	}

	static void nv04_tv_prepare(struct drm_encoder *encoder)
	{
	struct drm_device *dev = encoder->dev;
	int head = nouveau_crtc(encoder->crtc)->index;
	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

	helper->dpms(encoder, DRM_MODE_DPMS_OFF);

	nv04_dfp_disable(dev, head);

	if (nv_two_heads(dev))
	nv04_tv_bind(dev, head ^ 1, false);

	nv04_tv_bind(dev, head, true);
	}

	static void nv04_tv_mode_set(struct drm_encoder *encoder,
	struct drm_display_mode *mode,
	struct drm_display_mode *adjusted_mode)
	{
	struct drm_device *dev = encoder->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	struct nv04_crtc_reg *regp = &dev_priv->mode_reg.crtc_reg[nv_crtc->index];

	regp->tv_htotal = adjusted_mode->htotal;
	regp->tv_vtotal = adjusted_mode->vtotal;

	/* These delay the TV signals with respect to the VGA port,
	* they might be useful if we ever allow a CRTC to drive
	* multiple outputs.
	*/
	regp->tv_hskew = 1;
	regp->tv_hsync_delay = 1;
	regp->tv_hsync_delay2 = 64;
	regp->tv_vskew = 1;
	regp->tv_vsync_delay = 1;

	to_encoder_slave(encoder)->slave_funcs->mode_set(encoder, mode, adjusted_mode);
	}

	static void nv04_tv_commit(struct drm_encoder *encoder)
	{
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct drm_device *dev = encoder->dev;
	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	struct drm_encoder_helper_funcs *helper = encoder->helper_private;

	helper->dpms(encoder, DRM_MODE_DPMS_ON);

	NV_INFO(dev, "Output %s is running on CRTC %d using output %c\n",
	drm_get_connector_name(&nouveau_encoder_connector_get(nv_encoder)->base), nv_crtc->index,
	'@' + ffs(nv_encoder->dcb->or));
	}

	static void nv04_tv_destroy(struct drm_encoder *encoder)
	{
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);

	to_encoder_slave(encoder)->slave_funcs->destroy(encoder);

	drm_encoder_cleanup(encoder);

	kfree(nv_encoder);
	}

	int nv04_tv_create(struct drm_device dev, struct dcb_entry entry)
	{
	struct nouveau_encoder *nv_encoder;
	struct drm_encoder *encoder;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct i2c_adapter *adap;
	struct drm_encoder_funcs *funcs = NULL;
	struct drm_encoder_helper_funcs *hfuncs = NULL;
	struct drm_encoder_slave_funcs *sfuncs = NULL;
	int i2c_index = entry->i2c_index;
	int type, ret;
	bool was_locked;

	/* Ensure that we can talk to this encoder */
	type = nv04_tv_identify(dev, i2c_index);
	if (type < 0)
	return type;

	/* Allocate the necessary memory */
	nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
	if (!nv_encoder)
	return -ENOMEM;

	/* Initialize the common members */
	encoder = to_drm_encoder(nv_encoder);

	funcs = &nv04_tv_encoder_info[type].funcs;
	hfuncs = &nv04_tv_encoder_info[type].hfuncs;

	drm_encoder_init(dev, encoder, funcs, DRM_MODE_ENCODER_TVDAC);
	drm_encoder_helper_add(encoder, hfuncs);

	encoder->possible_crtcs = entry->heads;
	encoder->possible_clones = 0;

	nv_encoder->dcb = entry;
	nv_encoder->or = ffs(entry->or) - 1;

	/* Run the slave-specific initialization */
	adap = &dev_priv->vbios.dcb.i2c[i2c_index].chan->adapter;

	was_locked = NVLockVgaCrtcs(dev, false);

	ret = drm_i2c_encoder_init(encoder->dev, to_encoder_slave(encoder), adap,
	&nv04_tv_encoder_info[type].board_info);

	NVLockVgaCrtcs(dev, was_locked);

	if (ret < 0)
	goto fail;

	/* Fill the function pointers */
	sfuncs = to_encoder_slave(encoder)->slave_funcs;

	*funcs = (struct drm_encoder_funcs) {
	.destroy = nv04_tv_destroy,
	};

	*hfuncs = (struct drm_encoder_helper_funcs) {
	.dpms = nv04_tv_dpms,
	.save = sfuncs->save,
	.restore = sfuncs->restore,
	.mode_fixup = sfuncs->mode_fixup,
	.prepare = nv04_tv_prepare,
	.commit = nv04_tv_commit,
	.mode_set = nv04_tv_mode_set,
	.detect = sfuncs->detect,
	};

	/* Set the slave encoder configuration */
	sfuncs->set_config(encoder, nv04_tv_encoder_info[type].params);

	return 0;

	fail:
	drm_encoder_cleanup(encoder);

	kfree(nv_encoder);
	return ret;
	}