/*
* Copyright (C) 2008 Maarten Maathuis.
* 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 <drm/drm_crtc_helper.h>
#define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
#include "nouveau_reg.h"
#include "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"
#include "nouveau_crtc.h"
#include "nv50_display.h"
#include <subdev/timer.h>
static void
nv50_dac_disconnect(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_channel *evo = nv50_display(dev)->master;
int ret;
if (!nv_encoder->crtc)
return;
nv50_crtc_blank(nouveau_crtc(nv_encoder->crtc), true);
NV_DEBUG(drm, "Disconnecting DAC %d\n", nv_encoder->or);
ret = RING_SPACE(evo, 4);
if (ret) {
NV_ERROR(drm, "no space while disconnecting DAC\n");
return;
}
BEGIN_NV04(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 1);
OUT_RING (evo, 0);
BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
OUT_RING (evo, 0);
nv_encoder->crtc = NULL;
}
static enum drm_connector_status
nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_device *device = nouveau_dev(encoder->dev);
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
enum drm_connector_status status = connector_status_disconnected;
uint32_t dpms_state, load_pattern, load_state;
int or = nv_encoder->or;
nv_wr32(device, NV50_PDISPLAY_DAC_CLK_CTRL1(or), 0x00000001);
dpms_state = nv_rd32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or));
nv_wr32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
0x00150000 | NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
if (!nv_wait(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
NV_ERROR(drm, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
NV_ERROR(drm, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
nv_rd32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
return status;
}
/* Use bios provided value if possible. */
if (drm->vbios.dactestval) {
load_pattern = drm->vbios.dactestval;
NV_DEBUG(drm, "Using bios provided load_pattern of %d\n",
load_pattern);
} else {
load_pattern = 340;
NV_DEBUG(drm, "Using default load_pattern of %d\n",
load_pattern);
}
nv_wr32(device, NV50_PDISPLAY_DAC_LOAD_CTRL(or),
NV50_PDISPLAY_DAC_LOAD_CTRL_ACTIVE | load_pattern);
mdelay(45); /* give it some time to process */
load_state = nv_rd32(device, NV50_PDISPLAY_DAC_LOAD_CTRL(or));
nv_wr32(device, NV50_PDISPLAY_DAC_LOAD_CTRL(or), 0);
nv_wr32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or), dpms_state |
NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
if ((load_state & NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT) ==
NV50_PDISPLAY_DAC_LOAD_CTRL_PRESENT)
status = connector_status_connected;
if (status == connector_status_connected)
NV_DEBUG(drm, "Load was detected on output with or %d\n", or);
else
NV_DEBUG(drm, "Load was not detected on output with or %d\n", or);
return status;
}
static void
nv50_dac_dpms(struct drm_encoder *encoder, int mode)
{
struct nouveau_device *device = nouveau_dev(encoder->dev);
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
uint32_t val;
int or = nv_encoder->or;
NV_DEBUG(drm, "or %d mode %d\n", or, mode);
/* wait for it to be done */
if (!nv_wait(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or),
NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING, 0)) {
NV_ERROR(drm, "timeout: DAC_DPMS_CTRL_PENDING(%d) == 0\n", or);
NV_ERROR(drm, "DAC_DPMS_CTRL(%d) = 0x%08x\n", or,
nv_rd32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or)));
return;
}
val = nv_rd32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or)) & ~0x7F;
if (mode != DRM_MODE_DPMS_ON)
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_BLANKED;
switch (mode) {
case DRM_MODE_DPMS_STANDBY:
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
break;
case DRM_MODE_DPMS_SUSPEND:
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
break;
case DRM_MODE_DPMS_OFF:
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_OFF;
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_HSYNC_OFF;
val |= NV50_PDISPLAY_DAC_DPMS_CTRL_VSYNC_OFF;
break;
default:
break;
}
nv_wr32(device, NV50_PDISPLAY_DAC_DPMS_CTRL(or), val |
NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
}
static void
nv50_dac_save(struct drm_encoder *encoder)
{
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
NV_ERROR(drm, "!!\n");
}
static void
nv50_dac_restore(struct drm_encoder *encoder)
{
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
NV_ERROR(drm, "!!\n");
}
static bool
nv50_dac_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_connector *connector;
NV_DEBUG(drm, "or %d\n", nv_encoder->or);
connector = nouveau_encoder_connector_get(nv_encoder);
if (!connector) {
NV_ERROR(drm, "Encoder has no connector\n");
return false;
}
if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
connector->native_mode)
drm_mode_copy(adjusted_mode, connector->native_mode);
return true;
}
static void
nv50_dac_commit(struct drm_encoder *encoder)
{
}
static void
nv50_dac_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
struct drm_device *dev = encoder->dev;
struct nouveau_channel *evo = nv50_display(dev)->master;
struct nouveau_crtc *crtc = nouveau_crtc(encoder->crtc);
uint32_t mode_ctl = 0, mode_ctl2 = 0;
int ret;
NV_DEBUG(drm, "or %d type %d crtc %d\n",
nv_encoder->or, nv_encoder->dcb->type, crtc->index);
nv50_dac_dpms(encoder, DRM_MODE_DPMS_ON);
if (crtc->index == 1)
mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC1;
else
mode_ctl |= NV50_EVO_DAC_MODE_CTRL_CRTC0;
/* Lacking a working tv-out, this is not a 100% sure. */
if (nv_encoder->dcb->type == DCB_OUTPUT_ANALOG)
mode_ctl |= 0x40;
else
if (nv_encoder->dcb->type == DCB_OUTPUT_TV)
mode_ctl |= 0x100;
if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NHSYNC;
if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
mode_ctl2 |= NV50_EVO_DAC_MODE_CTRL2_NVSYNC;
ret = RING_SPACE(evo, 3);
if (ret) {
NV_ERROR(drm, "no space while connecting DAC\n");
return;
}
BEGIN_NV04(evo, 0, NV50_EVO_DAC(nv_encoder->or, MODE_CTRL), 2);
OUT_RING(evo, mode_ctl);
OUT_RING(evo, mode_ctl2);
nv_encoder->crtc = encoder->crtc;
}
static struct drm_crtc *
nv50_dac_crtc_get(struct drm_encoder *encoder)
{
return nouveau_encoder(encoder)->crtc;
}
static const struct drm_encoder_helper_funcs nv50_dac_helper_funcs = {
.dpms = nv50_dac_dpms,
.save = nv50_dac_save,
.restore = nv50_dac_restore,
.mode_fixup = nv50_dac_mode_fixup,
.prepare = nv50_dac_disconnect,
.commit = nv50_dac_commit,
.mode_set = nv50_dac_mode_set,
.get_crtc = nv50_dac_crtc_get,
.detect = nv50_dac_detect,
.disable = nv50_dac_disconnect
};
static void
nv50_dac_destroy(struct drm_encoder *encoder)
{
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
struct nouveau_drm *drm = nouveau_drm(encoder->dev);
if (!encoder)
return;
NV_DEBUG(drm, "\n");
drm_encoder_cleanup(encoder);
kfree(nv_encoder);
}
static const struct drm_encoder_funcs nv50_dac_encoder_funcs = {
.destroy = nv50_dac_destroy,
};
int
nv50_dac_create(struct drm_connector *connector, struct dcb_output *entry)
{
struct nouveau_encoder *nv_encoder;
struct drm_encoder *encoder;
nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL);
if (!nv_encoder)
return -ENOMEM;
encoder = to_drm_encoder(nv_encoder);
nv_encoder->dcb = entry;
nv_encoder->or = ffs(entry->or) - 1;
drm_encoder_init(connector->dev, encoder, &nv50_dac_encoder_funcs,
DRM_MODE_ENCODER_DAC);
drm_encoder_helper_add(encoder, &nv50_dac_helper_funcs);
encoder->possible_crtcs = entry->heads;
encoder->possible_clones = 0;
drm_mode_connector_attach_encoder(connector, encoder);
return 0;
}
