drivers/gpu/drm/nouveau/dispnv04/tvnv04.c - linux - Git at Google

 /*
  * 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 <drm/drmP.h>
 #include "nouveau_drv.h"
 #include "nouveau_reg.h"
 #include "nouveau_encoder.h"
 #include "nouveau_connector.h"
 #include "nouveau_crtc.h"
 #include "hw.h"
 #include <drm/drm_crtc_helper.h>

 #include <drm/i2c/ch7006.h>

 static struct nvkm_i2c_bus_probe nv04_tv_encoder_info[] = {
 	{
 		{
 			I2C_BOARD_INFO("ch7006", 0x75),
 			.platform_data = &(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
 			}
 		},
 		0
 	},
 	{ }
 };

 int nv04_tv_identify(struct drm_device *dev, int i2c_index)
 {
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 	struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, i2c_index);
 	if (bus) {
 		return nvkm_i2c_bus_probe(bus, "TV encoder",
 					  nv04_tv_encoder_info,
 					  NULL, NULL);
 	}
 	return -ENODEV;
 }


 #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_drm *drm = nouveau_drm(dev);
 	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 	struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
 	uint8_t crtc1A;

 	NV_DEBUG(drm, "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);

 	get_slave_funcs(encoder)->dpms(encoder, mode);
 }

 static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
 {
 	struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];

 	state->tv_setup = 0;

 	if (bind)
 		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;
 	const 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 nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 	struct nv04_crtc_reg *regp = &nv04_display(dev)->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;

 	get_slave_funcs(encoder)->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_drm *drm = nouveau_drm(dev);
 	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
 	const struct drm_encoder_helper_funcs *helper = encoder->helper_private;

 	helper->dpms(encoder, DRM_MODE_DPMS_ON);

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

 static void nv04_tv_destroy(struct drm_encoder *encoder)
 {
 	get_slave_funcs(encoder)->destroy(encoder);
 	drm_encoder_cleanup(encoder);

 	kfree(encoder->helper_private);
 	kfree(nouveau_encoder(encoder));
 }

 static const struct drm_encoder_funcs nv04_tv_funcs = {
 	.destroy = nv04_tv_destroy,
 };

 static const struct drm_encoder_helper_funcs nv04_tv_helper_funcs = {
 	.dpms = nv04_tv_dpms,
 	.mode_fixup = drm_i2c_encoder_mode_fixup,
 	.prepare = nv04_tv_prepare,
 	.commit = nv04_tv_commit,
 	.mode_set = nv04_tv_mode_set,
 	.detect = drm_i2c_encoder_detect,
 };

 int
 nv04_tv_create(struct drm_connector *connector, struct dcb_output *entry)
 {
 	struct nouveau_encoder *nv_encoder;
 	struct drm_encoder *encoder;
 	struct drm_device *dev = connector->dev;
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
 	struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, entry->i2c_index);
 	int type, ret;

 	/* Ensure that we can talk to this encoder */
 	type = nv04_tv_identify(dev, entry->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);

 	drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC,
 			 NULL);
 	drm_encoder_helper_add(encoder, &nv04_tv_helper_funcs);

 	nv_encoder->enc_save = drm_i2c_encoder_save;
 	nv_encoder->enc_restore = drm_i2c_encoder_restore;

 	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 */
 	ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
 				   &bus->i2c,
 				   &nv04_tv_encoder_info[type].dev);
 	if (ret < 0)
 		goto fail_cleanup;

 	/* Attach it to the specified connector. */
 	get_slave_funcs(encoder)->create_resources(encoder, connector);
 	drm_connector_attach_encoder(connector, encoder);

 	return 0;

 fail_cleanup:
 	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 <drm/drmP.h>
	#include "nouveau_drv.h"
	#include "nouveau_reg.h"
	#include "nouveau_encoder.h"
	#include "nouveau_connector.h"
	#include "nouveau_crtc.h"
	#include "hw.h"
	#include <drm/drm_crtc_helper.h>

	#include <drm/i2c/ch7006.h>

	static struct nvkm_i2c_bus_probe nv04_tv_encoder_info[] = {
	{
	{
	I2C_BOARD_INFO("ch7006", 0x75),
	.platform_data = &(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
	}
	},
	0
	},
	{ }
	};

	int nv04_tv_identify(struct drm_device *dev, int i2c_index)
	{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
	struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, i2c_index);
	if (bus) {
	return nvkm_i2c_bus_probe(bus, "TV encoder",
	nv04_tv_encoder_info,
	NULL, NULL);
	}
	return -ENODEV;
	}


	#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_drm *drm = nouveau_drm(dev);
	struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
	struct nv04_mode_state *state = &nv04_display(dev)->mode_reg;
	uint8_t crtc1A;

	NV_DEBUG(drm, "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);

	get_slave_funcs(encoder)->dpms(encoder, mode);
	}

	static void nv04_tv_bind(struct drm_device *dev, int head, bool bind)
	{
	struct nv04_crtc_reg *state = &nv04_display(dev)->mode_reg.crtc_reg[head];

	state->tv_setup = 0;

	if (bind)
	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;
	const 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 nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	struct nv04_crtc_reg *regp = &nv04_display(dev)->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;

	get_slave_funcs(encoder)->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_drm *drm = nouveau_drm(dev);
	struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc);
	const struct drm_encoder_helper_funcs *helper = encoder->helper_private;

	helper->dpms(encoder, DRM_MODE_DPMS_ON);

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

	static void nv04_tv_destroy(struct drm_encoder *encoder)
	{
	get_slave_funcs(encoder)->destroy(encoder);
	drm_encoder_cleanup(encoder);

	kfree(encoder->helper_private);
	kfree(nouveau_encoder(encoder));
	}

	static const struct drm_encoder_funcs nv04_tv_funcs = {
	.destroy = nv04_tv_destroy,
	};

	static const struct drm_encoder_helper_funcs nv04_tv_helper_funcs = {
	.dpms = nv04_tv_dpms,
	.mode_fixup = drm_i2c_encoder_mode_fixup,
	.prepare = nv04_tv_prepare,
	.commit = nv04_tv_commit,
	.mode_set = nv04_tv_mode_set,
	.detect = drm_i2c_encoder_detect,
	};

	int
	nv04_tv_create(struct drm_connector connector, struct dcb_output entry)
	{
	struct nouveau_encoder *nv_encoder;
	struct drm_encoder *encoder;
	struct drm_device *dev = connector->dev;
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
	struct nvkm_i2c_bus *bus = nvkm_i2c_bus_find(i2c, entry->i2c_index);
	int type, ret;

	/* Ensure that we can talk to this encoder */
	type = nv04_tv_identify(dev, entry->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);

	drm_encoder_init(dev, encoder, &nv04_tv_funcs, DRM_MODE_ENCODER_TVDAC,
	NULL);
	drm_encoder_helper_add(encoder, &nv04_tv_helper_funcs);

	nv_encoder->enc_save = drm_i2c_encoder_save;
	nv_encoder->enc_restore = drm_i2c_encoder_restore;

	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 */
	ret = drm_i2c_encoder_init(dev, to_encoder_slave(encoder),
	&bus->i2c,
	&nv04_tv_encoder_info[type].dev);
	if (ret < 0)
	goto fail_cleanup;

	/* Attach it to the specified connector. */
	get_slave_funcs(encoder)->create_resources(encoder, connector);
	drm_connector_attach_encoder(connector, encoder);

	return 0;

	fail_cleanup:
	drm_encoder_cleanup(encoder);
	kfree(nv_encoder);
	return ret;
	}