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19#include <drm/drm_crtc.h>
20#include <drm/drm_crtc_helper.h>
21
22#include "mdp4_kms.h"
23
24struct mdp4_lcdc_encoder {
25 struct drm_encoder base;
26 struct device_node *panel_node;
27 struct drm_panel *panel;
28 struct clk *lcdc_clk;
29 unsigned long int pixclock;
30 struct regulator *regs[3];
31 bool enabled;
32 uint32_t bsc;
33};
34#define to_mdp4_lcdc_encoder(x) container_of(x, struct mdp4_lcdc_encoder, base)
35
36static struct mdp4_kms *get_kms(struct drm_encoder *encoder)
37{
38 struct msm_drm_private *priv = encoder->dev->dev_private;
39 return to_mdp4_kms(to_mdp_kms(priv->kms));
40}
41
42#ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
43#include <mach/board.h>
44static void bs_init(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder)
45{
46 struct drm_device *dev = mdp4_lcdc_encoder->base.dev;
47 struct lcdc_platform_data *lcdc_pdata = mdp4_find_pdata("lvds.0");
48
49 if (!lcdc_pdata) {
50 dev_err(dev->dev, "could not find lvds pdata\n");
51 return;
52 }
53
54 if (lcdc_pdata->bus_scale_table) {
55 mdp4_lcdc_encoder->bsc = msm_bus_scale_register_client(
56 lcdc_pdata->bus_scale_table);
57 DBG("lvds : bus scale client: %08x", mdp4_lcdc_encoder->bsc);
58 }
59}
60
61static void bs_fini(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder)
62{
63 if (mdp4_lcdc_encoder->bsc) {
64 msm_bus_scale_unregister_client(mdp4_lcdc_encoder->bsc);
65 mdp4_lcdc_encoder->bsc = 0;
66 }
67}
68
69static void bs_set(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder, int idx)
70{
71 if (mdp4_lcdc_encoder->bsc) {
72 DBG("set bus scaling: %d", idx);
73 msm_bus_scale_client_update_request(mdp4_lcdc_encoder->bsc, idx);
74 }
75}
76#else
77static void bs_init(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder) {}
78static void bs_fini(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder) {}
79static void bs_set(struct mdp4_lcdc_encoder *mdp4_lcdc_encoder, int idx) {}
80#endif
81
82static void mdp4_lcdc_encoder_destroy(struct drm_encoder *encoder)
83{
84 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
85 to_mdp4_lcdc_encoder(encoder);
86 bs_fini(mdp4_lcdc_encoder);
87 drm_encoder_cleanup(encoder);
88 kfree(mdp4_lcdc_encoder);
89}
90
91static const struct drm_encoder_funcs mdp4_lcdc_encoder_funcs = {
92 .destroy = mdp4_lcdc_encoder_destroy,
93};
94
95
96static struct drm_connector *get_connector(struct drm_encoder *encoder)
97{
98 struct drm_device *dev = encoder->dev;
99 struct drm_connector *connector;
100
101 list_for_each_entry(connector, &dev->mode_config.connector_list, head)
102 if (connector->encoder == encoder)
103 return connector;
104
105 return NULL;
106}
107
108static void setup_phy(struct drm_encoder *encoder)
109{
110 struct drm_device *dev = encoder->dev;
111 struct drm_connector *connector = get_connector(encoder);
112 struct mdp4_kms *mdp4_kms = get_kms(encoder);
113 uint32_t lvds_intf = 0, lvds_phy_cfg0 = 0;
114 int bpp, nchan, swap;
115
116 if (!connector)
117 return;
118
119 bpp = 3 * connector->display_info.bpc;
120
121 if (!bpp)
122 bpp = 18;
123
124
125 nchan = 1;
126 swap = 0;
127
128 switch (bpp) {
129 case 24:
130 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0),
131 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x08) |
132 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x05) |
133 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x04) |
134 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x03));
135 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0),
136 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x02) |
137 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x01) |
138 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x00));
139 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1),
140 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x11) |
141 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x10) |
142 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0d) |
143 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0c));
144 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1),
145 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0b) |
146 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0a) |
147 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x09));
148 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2),
149 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) |
150 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) |
151 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) |
152 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x15));
153 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2),
154 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x14) |
155 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x13) |
156 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x12));
157 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(3),
158 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1b) |
159 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x17) |
160 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x16) |
161 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0f));
162 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(3),
163 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0e) |
164 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x07) |
165 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x06));
166 if (nchan == 2) {
167 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE3_EN |
168 MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN |
169 MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN |
170 MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN |
171 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN |
172 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
173 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
174 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
175 } else {
176 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE3_EN |
177 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
178 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
179 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
180 }
181 break;
182
183 case 18:
184 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(0),
185 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x0a) |
186 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x07) |
187 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x06) |
188 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x05));
189 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(0),
190 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x04) |
191 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x03) |
192 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x02));
193 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(1),
194 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x13) |
195 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x12) |
196 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x0f) |
197 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x0e));
198 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(1),
199 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x0d) |
200 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x0c) |
201 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x0b));
202 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_3_TO_0(2),
203 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT0(0x1a) |
204 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT1(0x19) |
205 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT2(0x18) |
206 MDP4_LCDC_LVDS_MUX_CTL_3_TO_0_BIT3(0x17));
207 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_MUX_CTL_6_TO_4(2),
208 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT4(0x16) |
209 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT5(0x15) |
210 MDP4_LCDC_LVDS_MUX_CTL_6_TO_4_BIT6(0x14));
211 if (nchan == 2) {
212 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE2_EN |
213 MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE1_EN |
214 MDP4_LCDC_LVDS_INTF_CTL_CH2_DATA_LANE0_EN |
215 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
216 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
217 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
218 } else {
219 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE2_EN |
220 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE1_EN |
221 MDP4_LCDC_LVDS_INTF_CTL_CH1_DATA_LANE0_EN;
222 }
223 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_RGB_OUT;
224 break;
225
226 default:
227 dev_err(dev->dev, "unknown bpp: %d\n", bpp);
228 return;
229 }
230
231 switch (nchan) {
232 case 1:
233 lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0;
234 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN |
235 MDP4_LCDC_LVDS_INTF_CTL_MODE_SEL;
236 break;
237 case 2:
238 lvds_phy_cfg0 = MDP4_LVDS_PHY_CFG0_CHANNEL0 |
239 MDP4_LVDS_PHY_CFG0_CHANNEL1;
240 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH2_CLK_LANE_EN |
241 MDP4_LCDC_LVDS_INTF_CTL_CH1_CLK_LANE_EN;
242 break;
243 default:
244 dev_err(dev->dev, "unknown # of channels: %d\n", nchan);
245 return;
246 }
247
248 if (swap)
249 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_CH_SWAP;
250
251 lvds_intf |= MDP4_LCDC_LVDS_INTF_CTL_ENABLE;
252
253 mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0);
254 mdp4_write(mdp4_kms, REG_MDP4_LCDC_LVDS_INTF_CTL, lvds_intf);
255 mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG2, 0x30);
256
257 mb();
258 udelay(1);
259 lvds_phy_cfg0 |= MDP4_LVDS_PHY_CFG0_SERIALIZATION_ENBLE;
260 mdp4_write(mdp4_kms, REG_MDP4_LVDS_PHY_CFG0, lvds_phy_cfg0);
261}
262
263static void mdp4_lcdc_encoder_mode_set(struct drm_encoder *encoder,
264 struct drm_display_mode *mode,
265 struct drm_display_mode *adjusted_mode)
266{
267 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
268 to_mdp4_lcdc_encoder(encoder);
269 struct mdp4_kms *mdp4_kms = get_kms(encoder);
270 uint32_t lcdc_hsync_skew, vsync_period, vsync_len, ctrl_pol;
271 uint32_t display_v_start, display_v_end;
272 uint32_t hsync_start_x, hsync_end_x;
273
274 mode = adjusted_mode;
275
276 DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
277 mode->base.id, mode->name,
278 mode->vrefresh, mode->clock,
279 mode->hdisplay, mode->hsync_start,
280 mode->hsync_end, mode->htotal,
281 mode->vdisplay, mode->vsync_start,
282 mode->vsync_end, mode->vtotal,
283 mode->type, mode->flags);
284
285 mdp4_lcdc_encoder->pixclock = mode->clock * 1000;
286
287 DBG("pixclock=%lu", mdp4_lcdc_encoder->pixclock);
288
289 ctrl_pol = 0;
290 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
291 ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_HSYNC_LOW;
292 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
293 ctrl_pol |= MDP4_LCDC_CTRL_POLARITY_VSYNC_LOW;
294
295
296 lcdc_hsync_skew = 0;
297
298 hsync_start_x = (mode->htotal - mode->hsync_start);
299 hsync_end_x = mode->htotal - (mode->hsync_start - mode->hdisplay) - 1;
300
301 vsync_period = mode->vtotal * mode->htotal;
302 vsync_len = (mode->vsync_end - mode->vsync_start) * mode->htotal;
303 display_v_start = (mode->vtotal - mode->vsync_start) * mode->htotal + lcdc_hsync_skew;
304 display_v_end = vsync_period - ((mode->vsync_start - mode->vdisplay) * mode->htotal) + lcdc_hsync_skew - 1;
305
306 mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_CTRL,
307 MDP4_LCDC_HSYNC_CTRL_PULSEW(mode->hsync_end - mode->hsync_start) |
308 MDP4_LCDC_HSYNC_CTRL_PERIOD(mode->htotal));
309 mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_PERIOD, vsync_period);
310 mdp4_write(mdp4_kms, REG_MDP4_LCDC_VSYNC_LEN, vsync_len);
311 mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_HCTRL,
312 MDP4_LCDC_DISPLAY_HCTRL_START(hsync_start_x) |
313 MDP4_LCDC_DISPLAY_HCTRL_END(hsync_end_x));
314 mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VSTART, display_v_start);
315 mdp4_write(mdp4_kms, REG_MDP4_LCDC_DISPLAY_VEND, display_v_end);
316 mdp4_write(mdp4_kms, REG_MDP4_LCDC_BORDER_CLR, 0);
317 mdp4_write(mdp4_kms, REG_MDP4_LCDC_UNDERFLOW_CLR,
318 MDP4_LCDC_UNDERFLOW_CLR_ENABLE_RECOVERY |
319 MDP4_LCDC_UNDERFLOW_CLR_COLOR(0xff));
320 mdp4_write(mdp4_kms, REG_MDP4_LCDC_HSYNC_SKEW, lcdc_hsync_skew);
321 mdp4_write(mdp4_kms, REG_MDP4_LCDC_CTRL_POLARITY, ctrl_pol);
322 mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_HCTL,
323 MDP4_LCDC_ACTIVE_HCTL_START(0) |
324 MDP4_LCDC_ACTIVE_HCTL_END(0));
325 mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VSTART, 0);
326 mdp4_write(mdp4_kms, REG_MDP4_LCDC_ACTIVE_VEND, 0);
327}
328
329static void mdp4_lcdc_encoder_disable(struct drm_encoder *encoder)
330{
331 struct drm_device *dev = encoder->dev;
332 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
333 to_mdp4_lcdc_encoder(encoder);
334 struct mdp4_kms *mdp4_kms = get_kms(encoder);
335 struct drm_panel *panel;
336 int i, ret;
337
338 if (WARN_ON(!mdp4_lcdc_encoder->enabled))
339 return;
340
341 mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 0);
342
343 panel = of_drm_find_panel(mdp4_lcdc_encoder->panel_node);
344 if (panel) {
345 drm_panel_disable(panel);
346 drm_panel_unprepare(panel);
347 }
348
349
350
351
352
353
354
355
356
357 mdp_irq_wait(&mdp4_kms->base, MDP4_IRQ_PRIMARY_VSYNC);
358
359 clk_disable_unprepare(mdp4_lcdc_encoder->lcdc_clk);
360
361 for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) {
362 ret = regulator_disable(mdp4_lcdc_encoder->regs[i]);
363 if (ret)
364 dev_err(dev->dev, "failed to disable regulator: %d\n", ret);
365 }
366
367 bs_set(mdp4_lcdc_encoder, 0);
368
369 mdp4_lcdc_encoder->enabled = false;
370}
371
372static void mdp4_lcdc_encoder_enable(struct drm_encoder *encoder)
373{
374 struct drm_device *dev = encoder->dev;
375 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
376 to_mdp4_lcdc_encoder(encoder);
377 unsigned long pc = mdp4_lcdc_encoder->pixclock;
378 struct mdp4_kms *mdp4_kms = get_kms(encoder);
379 struct drm_panel *panel;
380 int i, ret;
381
382 if (WARN_ON(mdp4_lcdc_encoder->enabled))
383 return;
384
385
386 mdp4_crtc_set_config(encoder->crtc,
387 MDP4_DMA_CONFIG_R_BPC(BPC6) |
388 MDP4_DMA_CONFIG_G_BPC(BPC6) |
389 MDP4_DMA_CONFIG_B_BPC(BPC6) |
390 MDP4_DMA_CONFIG_PACK_ALIGN_MSB |
391 MDP4_DMA_CONFIG_PACK(0x21) |
392 MDP4_DMA_CONFIG_DEFLKR_EN |
393 MDP4_DMA_CONFIG_DITHER_EN);
394 mdp4_crtc_set_intf(encoder->crtc, INTF_LCDC_DTV, 0);
395
396 bs_set(mdp4_lcdc_encoder, 1);
397
398 for (i = 0; i < ARRAY_SIZE(mdp4_lcdc_encoder->regs); i++) {
399 ret = regulator_enable(mdp4_lcdc_encoder->regs[i]);
400 if (ret)
401 dev_err(dev->dev, "failed to enable regulator: %d\n", ret);
402 }
403
404 DBG("setting lcdc_clk=%lu", pc);
405 ret = clk_set_rate(mdp4_lcdc_encoder->lcdc_clk, pc);
406 if (ret)
407 dev_err(dev->dev, "failed to configure lcdc_clk: %d\n", ret);
408 ret = clk_prepare_enable(mdp4_lcdc_encoder->lcdc_clk);
409 if (ret)
410 dev_err(dev->dev, "failed to enable lcdc_clk: %d\n", ret);
411
412 panel = of_drm_find_panel(mdp4_lcdc_encoder->panel_node);
413 if (panel) {
414 drm_panel_prepare(panel);
415 drm_panel_enable(panel);
416 }
417
418 setup_phy(encoder);
419
420 mdp4_write(mdp4_kms, REG_MDP4_LCDC_ENABLE, 1);
421
422 mdp4_lcdc_encoder->enabled = true;
423}
424
425static const struct drm_encoder_helper_funcs mdp4_lcdc_encoder_helper_funcs = {
426 .mode_set = mdp4_lcdc_encoder_mode_set,
427 .disable = mdp4_lcdc_encoder_disable,
428 .enable = mdp4_lcdc_encoder_enable,
429};
430
431long mdp4_lcdc_round_pixclk(struct drm_encoder *encoder, unsigned long rate)
432{
433 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder =
434 to_mdp4_lcdc_encoder(encoder);
435 return clk_round_rate(mdp4_lcdc_encoder->lcdc_clk, rate);
436}
437
438
439struct drm_encoder *mdp4_lcdc_encoder_init(struct drm_device *dev,
440 struct device_node *panel_node)
441{
442 struct drm_encoder *encoder = NULL;
443 struct mdp4_lcdc_encoder *mdp4_lcdc_encoder;
444 struct regulator *reg;
445 int ret;
446
447 mdp4_lcdc_encoder = kzalloc(sizeof(*mdp4_lcdc_encoder), GFP_KERNEL);
448 if (!mdp4_lcdc_encoder) {
449 ret = -ENOMEM;
450 goto fail;
451 }
452
453 mdp4_lcdc_encoder->panel_node = panel_node;
454
455 encoder = &mdp4_lcdc_encoder->base;
456
457 drm_encoder_init(dev, encoder, &mdp4_lcdc_encoder_funcs,
458 DRM_MODE_ENCODER_LVDS, NULL);
459 drm_encoder_helper_add(encoder, &mdp4_lcdc_encoder_helper_funcs);
460
461
462 mdp4_lcdc_encoder->lcdc_clk = mpd4_lvds_pll_init(dev);
463 if (IS_ERR(mdp4_lcdc_encoder->lcdc_clk)) {
464 dev_err(dev->dev, "failed to get lvds_clk\n");
465 ret = PTR_ERR(mdp4_lcdc_encoder->lcdc_clk);
466 goto fail;
467 }
468
469
470 reg = devm_regulator_get(dev->dev, "lvds-vccs-3p3v");
471 if (IS_ERR(reg)) {
472 ret = PTR_ERR(reg);
473 dev_err(dev->dev, "failed to get lvds-vccs-3p3v: %d\n", ret);
474 goto fail;
475 }
476 mdp4_lcdc_encoder->regs[0] = reg;
477
478 reg = devm_regulator_get(dev->dev, "lvds-pll-vdda");
479 if (IS_ERR(reg)) {
480 ret = PTR_ERR(reg);
481 dev_err(dev->dev, "failed to get lvds-pll-vdda: %d\n", ret);
482 goto fail;
483 }
484 mdp4_lcdc_encoder->regs[1] = reg;
485
486 reg = devm_regulator_get(dev->dev, "lvds-vdda");
487 if (IS_ERR(reg)) {
488 ret = PTR_ERR(reg);
489 dev_err(dev->dev, "failed to get lvds-vdda: %d\n", ret);
490 goto fail;
491 }
492 mdp4_lcdc_encoder->regs[2] = reg;
493
494 bs_init(mdp4_lcdc_encoder);
495
496 return encoder;
497
498fail:
499 if (encoder)
500 mdp4_lcdc_encoder_destroy(encoder);
501
502 return ERR_PTR(ret);
503}
504
