2 * Copyright (c) 2014, The Linux Foundation. All rights reserved.
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published by
8 * the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along with
16 * this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "drm_crtc_helper.h"
25 struct drm_encoder base;
26 struct mdp5_interface intf;
27 spinlock_t intf_lock; /* protect REG_MDP5_INTF_* registers */
31 #define to_mdp5_encoder(x) container_of(x, struct mdp5_encoder, base)
33 static struct mdp5_kms *get_kms(struct drm_encoder *encoder)
35 struct msm_drm_private *priv = encoder->dev->dev_private;
36 return to_mdp5_kms(to_mdp_kms(priv->kms));
39 #ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
40 #include <mach/board.h>
41 #include <mach/msm_bus.h>
42 #include <mach/msm_bus_board.h>
43 #define MDP_BUS_VECTOR_ENTRY(ab_val, ib_val) \
45 .src = MSM_BUS_MASTER_MDP_PORT0, \
46 .dst = MSM_BUS_SLAVE_EBI_CH0, \
51 static struct msm_bus_vectors mdp_bus_vectors[] = {
52 MDP_BUS_VECTOR_ENTRY(0, 0),
53 MDP_BUS_VECTOR_ENTRY(2000000000, 2000000000),
55 static struct msm_bus_paths mdp_bus_usecases[] = { {
57 .vectors = &mdp_bus_vectors[0],
60 .vectors = &mdp_bus_vectors[1],
62 static struct msm_bus_scale_pdata mdp_bus_scale_table = {
63 .usecase = mdp_bus_usecases,
64 .num_usecases = ARRAY_SIZE(mdp_bus_usecases),
68 static void bs_init(struct mdp5_encoder *mdp5_encoder)
70 mdp5_encoder->bsc = msm_bus_scale_register_client(
71 &mdp_bus_scale_table);
72 DBG("bus scale client: %08x", mdp5_encoder->bsc);
75 static void bs_fini(struct mdp5_encoder *mdp5_encoder)
77 if (mdp5_encoder->bsc) {
78 msm_bus_scale_unregister_client(mdp5_encoder->bsc);
79 mdp5_encoder->bsc = 0;
83 static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx)
85 if (mdp5_encoder->bsc) {
86 DBG("set bus scaling: %d", idx);
87 /* HACK: scaling down, and then immediately back up
88 * seems to leave things broken (underflow).. so
92 msm_bus_scale_client_update_request(mdp5_encoder->bsc, idx);
96 static void bs_init(struct mdp5_encoder *mdp5_encoder) {}
97 static void bs_fini(struct mdp5_encoder *mdp5_encoder) {}
98 static void bs_set(struct mdp5_encoder *mdp5_encoder, int idx) {}
101 static void mdp5_encoder_destroy(struct drm_encoder *encoder)
103 struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
104 bs_fini(mdp5_encoder);
105 drm_encoder_cleanup(encoder);
109 static const struct drm_encoder_funcs mdp5_encoder_funcs = {
110 .destroy = mdp5_encoder_destroy,
113 static bool mdp5_encoder_mode_fixup(struct drm_encoder *encoder,
114 const struct drm_display_mode *mode,
115 struct drm_display_mode *adjusted_mode)
120 static void mdp5_encoder_mode_set(struct drm_encoder *encoder,
121 struct drm_display_mode *mode,
122 struct drm_display_mode *adjusted_mode)
124 struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
125 struct mdp5_kms *mdp5_kms = get_kms(encoder);
126 struct drm_device *dev = encoder->dev;
127 struct drm_connector *connector;
128 int intf = mdp5_encoder->intf.num;
129 uint32_t dtv_hsync_skew, vsync_period, vsync_len, ctrl_pol;
130 uint32_t display_v_start, display_v_end;
131 uint32_t hsync_start_x, hsync_end_x;
132 uint32_t format = 0x2100;
135 mode = adjusted_mode;
137 DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
138 mode->base.id, mode->name,
139 mode->vrefresh, mode->clock,
140 mode->hdisplay, mode->hsync_start,
141 mode->hsync_end, mode->htotal,
142 mode->vdisplay, mode->vsync_start,
143 mode->vsync_end, mode->vtotal,
144 mode->type, mode->flags);
148 /* DSI controller cannot handle active-low sync signals. */
149 if (mdp5_encoder->intf.type != INTF_DSI) {
150 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
151 ctrl_pol |= MDP5_INTF_POLARITY_CTL_HSYNC_LOW;
152 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
153 ctrl_pol |= MDP5_INTF_POLARITY_CTL_VSYNC_LOW;
155 /* probably need to get DATA_EN polarity from panel.. */
157 dtv_hsync_skew = 0; /* get this from panel? */
159 /* Get color format from panel, default is 8bpc */
160 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
161 if (connector->encoder == encoder) {
162 switch (connector->display_info.bpc) {
181 hsync_start_x = (mode->htotal - mode->hsync_start);
182 hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1;
184 vsync_period = mode->vtotal * mode->htotal;
185 vsync_len = (mode->vsync_end - mode->vsync_start) * mode->htotal;
186 display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + dtv_hsync_skew;
187 display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + dtv_hsync_skew - 1;
191 * DISPLAY_V_START = (VBP * HCYCLE) + HBP
192 * DISPLAY_V_END = (VBP + VACTIVE) * HCYCLE - 1 - HFP
194 if (mdp5_encoder->intf.type == INTF_eDP) {
195 display_v_start += mode->htotal - mode->hsync_start;
196 display_v_end -= mode->hsync_start - mode->hdisplay;
199 spin_lock_irqsave(&mdp5_encoder->intf_lock, flags);
201 mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_CTL(intf),
202 MDP5_INTF_HSYNC_CTL_PULSEW(mode->hsync_end - mode->hsync_start) |
203 MDP5_INTF_HSYNC_CTL_PERIOD(mode->htotal));
204 mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_PERIOD_F0(intf), vsync_period);
205 mdp5_write(mdp5_kms, REG_MDP5_INTF_VSYNC_LEN_F0(intf), vsync_len);
206 mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_HCTL(intf),
207 MDP5_INTF_DISPLAY_HCTL_START(hsync_start_x) |
208 MDP5_INTF_DISPLAY_HCTL_END(hsync_end_x));
209 mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VSTART_F0(intf), display_v_start);
210 mdp5_write(mdp5_kms, REG_MDP5_INTF_DISPLAY_VEND_F0(intf), display_v_end);
211 mdp5_write(mdp5_kms, REG_MDP5_INTF_BORDER_COLOR(intf), 0);
212 mdp5_write(mdp5_kms, REG_MDP5_INTF_UNDERFLOW_COLOR(intf), 0xff);
213 mdp5_write(mdp5_kms, REG_MDP5_INTF_HSYNC_SKEW(intf), dtv_hsync_skew);
214 mdp5_write(mdp5_kms, REG_MDP5_INTF_POLARITY_CTL(intf), ctrl_pol);
215 mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_HCTL(intf),
216 MDP5_INTF_ACTIVE_HCTL_START(0) |
217 MDP5_INTF_ACTIVE_HCTL_END(0));
218 mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VSTART_F0(intf), 0);
219 mdp5_write(mdp5_kms, REG_MDP5_INTF_ACTIVE_VEND_F0(intf), 0);
220 mdp5_write(mdp5_kms, REG_MDP5_INTF_PANEL_FORMAT(intf), format);
221 mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(intf), 0x3); /* frame+line? */
223 spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags);
225 mdp5_crtc_set_intf(encoder->crtc, &mdp5_encoder->intf);
228 static void mdp5_encoder_disable(struct drm_encoder *encoder)
230 struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
231 struct mdp5_kms *mdp5_kms = get_kms(encoder);
232 struct mdp5_ctl *ctl = mdp5_crtc_get_ctl(encoder->crtc);
233 int lm = mdp5_crtc_get_lm(encoder->crtc);
234 struct mdp5_interface *intf = &mdp5_encoder->intf;
235 int intfn = mdp5_encoder->intf.num;
238 if (WARN_ON(!mdp5_encoder->enabled))
241 mdp5_ctl_set_encoder_state(ctl, false);
243 spin_lock_irqsave(&mdp5_encoder->intf_lock, flags);
244 mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intfn), 0);
245 spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags);
246 mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf));
249 * Wait for a vsync so we know the ENABLE=0 latched before
250 * the (connector) source of the vsync's gets disabled,
251 * otherwise we end up in a funny state if we re-enable
252 * before the disable latches, which results that some of
253 * the settings changes for the new modeset (like new
254 * scanout buffer) don't latch properly..
256 mdp_irq_wait(&mdp5_kms->base, intf2vblank(lm, intf));
258 bs_set(mdp5_encoder, 0);
260 mdp5_encoder->enabled = false;
263 static void mdp5_encoder_enable(struct drm_encoder *encoder)
265 struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
266 struct mdp5_kms *mdp5_kms = get_kms(encoder);
267 struct mdp5_ctl *ctl = mdp5_crtc_get_ctl(encoder->crtc);
268 struct mdp5_interface *intf = &mdp5_encoder->intf;
269 int intfn = mdp5_encoder->intf.num;
272 if (WARN_ON(mdp5_encoder->enabled))
275 bs_set(mdp5_encoder, 1);
276 spin_lock_irqsave(&mdp5_encoder->intf_lock, flags);
277 mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(intfn), 1);
278 spin_unlock_irqrestore(&mdp5_encoder->intf_lock, flags);
279 mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf));
281 mdp5_ctl_set_encoder_state(ctl, true);
283 mdp5_encoder->enabled = true;
286 static const struct drm_encoder_helper_funcs mdp5_encoder_helper_funcs = {
287 .mode_fixup = mdp5_encoder_mode_fixup,
288 .mode_set = mdp5_encoder_mode_set,
289 .disable = mdp5_encoder_disable,
290 .enable = mdp5_encoder_enable,
293 int mdp5_encoder_set_split_display(struct drm_encoder *encoder,
294 struct drm_encoder *slave_encoder)
296 struct mdp5_encoder *mdp5_encoder = to_mdp5_encoder(encoder);
297 struct mdp5_kms *mdp5_kms;
301 if (!encoder || !slave_encoder)
304 mdp5_kms = get_kms(encoder);
305 intf_num = mdp5_encoder->intf.num;
307 /* Switch slave encoder's TimingGen Sync mode,
308 * to use the master's enable signal for the slave encoder.
311 data |= MDP5_MDP_SPLIT_DPL_LOWER_INTF2_TG_SYNC;
312 else if (intf_num == 2)
313 data |= MDP5_MDP_SPLIT_DPL_LOWER_INTF1_TG_SYNC;
317 /* Make sure clocks are on when connectors calling this function. */
318 mdp5_enable(mdp5_kms);
319 mdp5_write(mdp5_kms, REG_MDP5_MDP_SPARE_0(0),
320 MDP5_MDP_SPARE_0_SPLIT_DPL_SINGLE_FLUSH_EN);
321 /* Dumb Panel, Sync mode */
322 mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_UPPER(0), 0);
323 mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_LOWER(0), data);
324 mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_EN(0), 1);
325 mdp5_disable(mdp5_kms);
330 /* initialize encoder */
331 struct drm_encoder *mdp5_encoder_init(struct drm_device *dev,
332 struct mdp5_interface *intf)
334 struct drm_encoder *encoder = NULL;
335 struct mdp5_encoder *mdp5_encoder;
336 int enc_type = (intf->type == INTF_DSI) ?
337 DRM_MODE_ENCODER_DSI : DRM_MODE_ENCODER_TMDS;
340 mdp5_encoder = kzalloc(sizeof(*mdp5_encoder), GFP_KERNEL);
346 memcpy(&mdp5_encoder->intf, intf, sizeof(mdp5_encoder->intf));
347 encoder = &mdp5_encoder->base;
349 spin_lock_init(&mdp5_encoder->intf_lock);
351 drm_encoder_init(dev, encoder, &mdp5_encoder_funcs, enc_type);
353 drm_encoder_helper_add(encoder, &mdp5_encoder_helper_funcs);
355 bs_init(mdp5_encoder);
361 mdp5_encoder_destroy(encoder);