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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2019, Amarula Solutions.
4 * Author: Jagan Teki <jagan@amarulasolutions.com>
5 */
6
7#include <drm/drm_mipi_dbi.h>
8#include <drm/drm_mipi_dsi.h>
9#include <drm/drm_modes.h>
10#include <drm/drm_panel.h>
11
12#include <linux/bitfield.h>
13#include <linux/gpio/consumer.h>
14#include <linux/delay.h>
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/regulator/consumer.h>
18#include <linux/spi/spi.h>
19
20#include <video/mipi_display.h>
21
22/* Command2 BKx selection command */
23#define ST7701_CMD2BKX_SEL 0xFF
24#define ST7701_CMD1 0
25#define ST7701_CMD2 BIT(4)
26#define ST7701_CMD2BK_MASK GENMASK(3, 0)
27
28/* Command2, BK0 commands */
29#define ST7701_CMD2_BK0_PVGAMCTRL 0xB0 /* Positive Voltage Gamma Control */
30#define ST7701_CMD2_BK0_NVGAMCTRL 0xB1 /* Negative Voltage Gamma Control */
31#define ST7701_CMD2_BK0_LNESET 0xC0 /* Display Line setting */
32#define ST7701_CMD2_BK0_PORCTRL 0xC1 /* Porch control */
33#define ST7701_CMD2_BK0_INVSEL 0xC2 /* Inversion selection, Frame Rate Control */
34
35/* Command2, BK1 commands */
36#define ST7701_CMD2_BK1_VRHS 0xB0 /* Vop amplitude setting */
37#define ST7701_CMD2_BK1_VCOM 0xB1 /* VCOM amplitude setting */
38#define ST7701_CMD2_BK1_VGHSS 0xB2 /* VGH Voltage setting */
39#define ST7701_CMD2_BK1_TESTCMD 0xB3 /* TEST Command Setting */
40#define ST7701_CMD2_BK1_VGLS 0xB5 /* VGL Voltage setting */
41#define ST7701_CMD2_BK1_PWCTLR1 0xB7 /* Power Control 1 */
42#define ST7701_CMD2_BK1_PWCTLR2 0xB8 /* Power Control 2 */
43#define ST7701_CMD2_BK1_SPD1 0xC1 /* Source pre_drive timing set1 */
44#define ST7701_CMD2_BK1_SPD2 0xC2 /* Source EQ2 Setting */
45#define ST7701_CMD2_BK1_MIPISET1 0xD0 /* MIPI Setting 1 */
46
47/* Command2, BK0 bytes */
48#define ST7701_CMD2_BK0_GAMCTRL_AJ_MASK GENMASK(7, 6)
49#define ST7701_CMD2_BK0_GAMCTRL_VC0_MASK GENMASK(3, 0)
50#define ST7701_CMD2_BK0_GAMCTRL_VC4_MASK GENMASK(5, 0)
51#define ST7701_CMD2_BK0_GAMCTRL_VC8_MASK GENMASK(5, 0)
52#define ST7701_CMD2_BK0_GAMCTRL_VC16_MASK GENMASK(4, 0)
53#define ST7701_CMD2_BK0_GAMCTRL_VC24_MASK GENMASK(4, 0)
54#define ST7701_CMD2_BK0_GAMCTRL_VC52_MASK GENMASK(3, 0)
55#define ST7701_CMD2_BK0_GAMCTRL_VC80_MASK GENMASK(5, 0)
56#define ST7701_CMD2_BK0_GAMCTRL_VC108_MASK GENMASK(3, 0)
57#define ST7701_CMD2_BK0_GAMCTRL_VC147_MASK GENMASK(3, 0)
58#define ST7701_CMD2_BK0_GAMCTRL_VC175_MASK GENMASK(5, 0)
59#define ST7701_CMD2_BK0_GAMCTRL_VC203_MASK GENMASK(3, 0)
60#define ST7701_CMD2_BK0_GAMCTRL_VC231_MASK GENMASK(4, 0)
61#define ST7701_CMD2_BK0_GAMCTRL_VC239_MASK GENMASK(4, 0)
62#define ST7701_CMD2_BK0_GAMCTRL_VC247_MASK GENMASK(5, 0)
63#define ST7701_CMD2_BK0_GAMCTRL_VC251_MASK GENMASK(5, 0)
64#define ST7701_CMD2_BK0_GAMCTRL_VC255_MASK GENMASK(4, 0)
65#define ST7701_CMD2_BK0_LNESET_LINE_MASK GENMASK(6, 0)
66#define ST7701_CMD2_BK0_LNESET_LDE_EN BIT(7)
67#define ST7701_CMD2_BK0_LNESET_LINEDELTA GENMASK(1, 0)
68#define ST7701_CMD2_BK0_PORCTRL_VBP_MASK GENMASK(7, 0)
69#define ST7701_CMD2_BK0_PORCTRL_VFP_MASK GENMASK(7, 0)
70#define ST7701_CMD2_BK0_INVSEL_ONES_MASK GENMASK(5, 4)
71#define ST7701_CMD2_BK0_INVSEL_NLINV_MASK GENMASK(2, 0)
72#define ST7701_CMD2_BK0_INVSEL_RTNI_MASK GENMASK(4, 0)
73
74/* Command2, BK1 bytes */
75#define ST7701_CMD2_BK1_VRHA_MASK GENMASK(7, 0)
76#define ST7701_CMD2_BK1_VCOM_MASK GENMASK(7, 0)
77#define ST7701_CMD2_BK1_VGHSS_MASK GENMASK(3, 0)
78#define ST7701_CMD2_BK1_TESTCMD_VAL BIT(7)
79#define ST7701_CMD2_BK1_VGLS_ONES BIT(6)
80#define ST7701_CMD2_BK1_VGLS_MASK GENMASK(3, 0)
81#define ST7701_CMD2_BK1_PWRCTRL1_AP_MASK GENMASK(7, 6)
82#define ST7701_CMD2_BK1_PWRCTRL1_APIS_MASK GENMASK(3, 2)
83#define ST7701_CMD2_BK1_PWRCTRL1_APOS_MASK GENMASK(1, 0)
84#define ST7701_CMD2_BK1_PWRCTRL2_AVDD_MASK GENMASK(5, 4)
85#define ST7701_CMD2_BK1_PWRCTRL2_AVCL_MASK GENMASK(1, 0)
86#define ST7701_CMD2_BK1_SPD1_ONES_MASK GENMASK(6, 4)
87#define ST7701_CMD2_BK1_SPD1_T2D_MASK GENMASK(3, 0)
88#define ST7701_CMD2_BK1_SPD2_ONES_MASK GENMASK(6, 4)
89#define ST7701_CMD2_BK1_SPD2_T3D_MASK GENMASK(3, 0)
90#define ST7701_CMD2_BK1_MIPISET1_ONES BIT(7)
91#define ST7701_CMD2_BK1_MIPISET1_EOT_EN BIT(3)
92
93#define CFIELD_PREP(_mask, _val) \
94 (((typeof(_mask))(_val) << (__builtin_ffsll(_mask) - 1)) & (_mask))
95
96enum op_bias {
97 OP_BIAS_OFF = 0,
98 OP_BIAS_MIN,
99 OP_BIAS_MIDDLE,
100 OP_BIAS_MAX
101};
102
103struct st7701;
104
105struct st7701_panel_desc {
106 const struct drm_display_mode *mode;
107 unsigned int lanes;
108 enum mipi_dsi_pixel_format format;
109 unsigned int panel_sleep_delay;
110
111 /* TFT matrix driver configuration, panel specific. */
112 const u8 pv_gamma[16]; /* Positive voltage gamma control */
113 const u8 nv_gamma[16]; /* Negative voltage gamma control */
114 const u8 nlinv; /* Inversion selection */
115 const u32 vop_uv; /* Vop in uV */
116 const u32 vcom_uv; /* Vcom in uV */
117 const u16 vgh_mv; /* Vgh in mV */
118 const s16 vgl_mv; /* Vgl in mV */
119 const u16 avdd_mv; /* Avdd in mV */
120 const s16 avcl_mv; /* Avcl in mV */
121 const enum op_bias gamma_op_bias;
122 const enum op_bias input_op_bias;
123 const enum op_bias output_op_bias;
124 const u16 t2d_ns; /* T2D in ns */
125 const u16 t3d_ns; /* T3D in ns */
126 const bool eot_en;
127
128 /* GIP sequence, fully custom and undocumented. */
129 void (*gip_sequence)(struct st7701 *st7701);
130};
131
132struct st7701 {
133 struct drm_panel panel;
134 struct mipi_dsi_device *dsi;
135 struct mipi_dbi dbi;
136 const struct st7701_panel_desc *desc;
137
138 struct regulator_bulk_data supplies[2];
139 struct gpio_desc *reset;
140 unsigned int sleep_delay;
141 enum drm_panel_orientation orientation;
142
143 int (*write_command)(struct st7701 *st7701, u8 cmd, const u8 *seq,
144 size_t len);
145};
146
147static inline struct st7701 *panel_to_st7701(struct drm_panel *panel)
148{
149 return container_of(panel, struct st7701, panel);
150}
151
152static int st7701_dsi_write(struct st7701 *st7701, u8 cmd, const u8 *seq,
153 size_t len)
154{
155 return mipi_dsi_dcs_write(st7701->dsi, cmd, seq, len);
156}
157
158static int st7701_dbi_write(struct st7701 *st7701, u8 cmd, const u8 *seq,
159 size_t len)
160{
161 return mipi_dbi_command_stackbuf(&st7701->dbi, cmd, seq, len);
162}
163
164#define ST7701_WRITE(st7701, cmd, seq...) \
165 { \
166 const u8 d[] = { seq }; \
167 st7701->write_command(st7701, cmd, d, ARRAY_SIZE(d)); \
168 }
169
170static u8 st7701_vgls_map(struct st7701 *st7701)
171{
172 const struct st7701_panel_desc *desc = st7701->desc;
173 struct {
174 s32 vgl;
175 u8 val;
176 } map[16] = {
177 { -7060, 0x0 }, { -7470, 0x1 },
178 { -7910, 0x2 }, { -8140, 0x3 },
179 { -8650, 0x4 }, { -8920, 0x5 },
180 { -9210, 0x6 }, { -9510, 0x7 },
181 { -9830, 0x8 }, { -10170, 0x9 },
182 { -10530, 0xa }, { -10910, 0xb },
183 { -11310, 0xc }, { -11730, 0xd },
184 { -12200, 0xe }, { -12690, 0xf }
185 };
186 int i;
187
188 for (i = 0; i < ARRAY_SIZE(map); i++)
189 if (desc->vgl_mv == map[i].vgl)
190 return map[i].val;
191
192 return 0;
193}
194
195static void st7701_switch_cmd_bkx(struct st7701 *st7701, bool cmd2, u8 bkx)
196{
197 u8 val;
198
199 if (cmd2)
200 val = ST7701_CMD2 | FIELD_PREP(ST7701_CMD2BK_MASK, bkx);
201 else
202 val = ST7701_CMD1;
203
204 ST7701_WRITE(st7701, ST7701_CMD2BKX_SEL, 0x77, 0x01, 0x00, 0x00, val);
205}
206
207static void st7701_init_sequence(struct st7701 *st7701)
208{
209 const struct st7701_panel_desc *desc = st7701->desc;
210 const struct drm_display_mode *mode = desc->mode;
211 const u8 linecount8 = mode->vdisplay / 8;
212 const u8 linecountrem2 = (mode->vdisplay % 8) / 2;
213
214 ST7701_WRITE(st7701, MIPI_DCS_SOFT_RESET, 0x00);
215
216 /* We need to wait 5ms before sending new commands */
217 msleep(5);
218
219 ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
220
221 msleep(st7701->sleep_delay);
222
223 /* Command2, BK0 */
224 st7701_switch_cmd_bkx(st7701, true, 0);
225
226 st7701->write_command(st7701, ST7701_CMD2_BK0_PVGAMCTRL, desc->pv_gamma,
227 ARRAY_SIZE(desc->pv_gamma));
228 st7701->write_command(st7701, ST7701_CMD2_BK0_NVGAMCTRL, desc->nv_gamma,
229 ARRAY_SIZE(desc->nv_gamma));
230 /*
231 * Vertical line count configuration:
232 * Line[6:0]: select number of vertical lines of the TFT matrix in
233 * multiples of 8 lines
234 * LDE_EN: enable sub-8-line granularity line count
235 * Line_delta[1:0]: add 0/2/4/6 extra lines to line count selected
236 * using Line[6:0]
237 *
238 * Total number of vertical lines:
239 * LN = ((Line[6:0] + 1) * 8) + (LDE_EN ? Line_delta[1:0] * 2 : 0)
240 */
241 ST7701_WRITE(st7701, ST7701_CMD2_BK0_LNESET,
242 FIELD_PREP(ST7701_CMD2_BK0_LNESET_LINE_MASK, linecount8 - 1) |
243 (linecountrem2 ? ST7701_CMD2_BK0_LNESET_LDE_EN : 0),
244 FIELD_PREP(ST7701_CMD2_BK0_LNESET_LINEDELTA, linecountrem2));
245 ST7701_WRITE(st7701, ST7701_CMD2_BK0_PORCTRL,
246 FIELD_PREP(ST7701_CMD2_BK0_PORCTRL_VBP_MASK,
247 mode->vtotal - mode->vsync_end),
248 FIELD_PREP(ST7701_CMD2_BK0_PORCTRL_VFP_MASK,
249 mode->vsync_start - mode->vdisplay));
250 /*
251 * Horizontal pixel count configuration:
252 * PCLK = 512 + (RTNI[4:0] * 16)
253 * The PCLK is number of pixel clock per line, which matches
254 * mode htotal. The minimum is 512 PCLK.
255 */
256 ST7701_WRITE(st7701, ST7701_CMD2_BK0_INVSEL,
257 ST7701_CMD2_BK0_INVSEL_ONES_MASK |
258 FIELD_PREP(ST7701_CMD2_BK0_INVSEL_NLINV_MASK, desc->nlinv),
259 FIELD_PREP(ST7701_CMD2_BK0_INVSEL_RTNI_MASK,
260 (clamp((u32)mode->htotal, 512U, 1008U) - 512) / 16));
261
262 /* Command2, BK1 */
263 st7701_switch_cmd_bkx(st7701, true, 1);
264
265 /* Vop = 3.5375V + (VRHA[7:0] * 0.0125V) */
266 ST7701_WRITE(st7701, ST7701_CMD2_BK1_VRHS,
267 FIELD_PREP(ST7701_CMD2_BK1_VRHA_MASK,
268 DIV_ROUND_CLOSEST(desc->vop_uv - 3537500, 12500)));
269
270 /* Vcom = 0.1V + (VCOM[7:0] * 0.0125V) */
271 ST7701_WRITE(st7701, ST7701_CMD2_BK1_VCOM,
272 FIELD_PREP(ST7701_CMD2_BK1_VCOM_MASK,
273 DIV_ROUND_CLOSEST(desc->vcom_uv - 100000, 12500)));
274
275 /* Vgh = 11.5V + (VGHSS[7:0] * 0.5V) */
276 ST7701_WRITE(st7701, ST7701_CMD2_BK1_VGHSS,
277 FIELD_PREP(ST7701_CMD2_BK1_VGHSS_MASK,
278 DIV_ROUND_CLOSEST(clamp(desc->vgh_mv,
279 (u16)11500,
280 (u16)17000) - 11500,
281 500)));
282
283 ST7701_WRITE(st7701, ST7701_CMD2_BK1_TESTCMD, ST7701_CMD2_BK1_TESTCMD_VAL);
284
285 /* Vgl is non-linear */
286 ST7701_WRITE(st7701, ST7701_CMD2_BK1_VGLS,
287 ST7701_CMD2_BK1_VGLS_ONES |
288 FIELD_PREP(ST7701_CMD2_BK1_VGLS_MASK, st7701_vgls_map(st7701)));
289
290 ST7701_WRITE(st7701, ST7701_CMD2_BK1_PWCTLR1,
291 FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_AP_MASK,
292 desc->gamma_op_bias) |
293 FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_APIS_MASK,
294 desc->input_op_bias) |
295 FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL1_APOS_MASK,
296 desc->output_op_bias));
297
298 /* Avdd = 6.2V + (AVDD[1:0] * 0.2V) , Avcl = -4.4V - (AVCL[1:0] * 0.2V) */
299 ST7701_WRITE(st7701, ST7701_CMD2_BK1_PWCTLR2,
300 FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL2_AVDD_MASK,
301 DIV_ROUND_CLOSEST(desc->avdd_mv - 6200, 200)) |
302 FIELD_PREP(ST7701_CMD2_BK1_PWRCTRL2_AVCL_MASK,
303 DIV_ROUND_CLOSEST(-4400 - desc->avcl_mv, 200)));
304
305 /* T2D = 0.2us * T2D[3:0] */
306 ST7701_WRITE(st7701, ST7701_CMD2_BK1_SPD1,
307 ST7701_CMD2_BK1_SPD1_ONES_MASK |
308 FIELD_PREP(ST7701_CMD2_BK1_SPD1_T2D_MASK,
309 DIV_ROUND_CLOSEST(desc->t2d_ns, 200)));
310
311 /* T3D = 4us + (0.8us * T3D[3:0]) */
312 ST7701_WRITE(st7701, ST7701_CMD2_BK1_SPD2,
313 ST7701_CMD2_BK1_SPD2_ONES_MASK |
314 FIELD_PREP(ST7701_CMD2_BK1_SPD2_T3D_MASK,
315 DIV_ROUND_CLOSEST(desc->t3d_ns - 4000, 800)));
316
317 ST7701_WRITE(st7701, ST7701_CMD2_BK1_MIPISET1,
318 ST7701_CMD2_BK1_MIPISET1_ONES |
319 (desc->eot_en ? ST7701_CMD2_BK1_MIPISET1_EOT_EN : 0));
320}
321
322static void ts8550b_gip_sequence(struct st7701 *st7701)
323{
324 /**
325 * ST7701_SPEC_V1.2 is unable to provide enough information above this
326 * specific command sequence, so grab the same from vendor BSP driver.
327 */
328 ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
329 ST7701_WRITE(st7701, 0xE1, 0x0B, 0x00, 0x0D, 0x00, 0x0C, 0x00, 0x0E,
330 0x00, 0x00, 0x44, 0x44);
331 ST7701_WRITE(st7701, 0xE2, 0x33, 0x33, 0x44, 0x44, 0x64, 0x00, 0x66,
332 0x00, 0x65, 0x00, 0x67, 0x00, 0x00);
333 ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
334 ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
335 ST7701_WRITE(st7701, 0xE5, 0x0C, 0x78, 0x3C, 0xA0, 0x0E, 0x78, 0x3C,
336 0xA0, 0x10, 0x78, 0x3C, 0xA0, 0x12, 0x78, 0x3C, 0xA0);
337 ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
338 ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
339 ST7701_WRITE(st7701, 0xE8, 0x0D, 0x78, 0x3C, 0xA0, 0x0F, 0x78, 0x3C,
340 0xA0, 0x11, 0x78, 0x3C, 0xA0, 0x13, 0x78, 0x3C, 0xA0);
341 ST7701_WRITE(st7701, 0xEB, 0x02, 0x02, 0x39, 0x39, 0xEE, 0x44, 0x00);
342 ST7701_WRITE(st7701, 0xEC, 0x00, 0x00);
343 ST7701_WRITE(st7701, 0xED, 0xFF, 0xF1, 0x04, 0x56, 0x72, 0x3F, 0xFF,
344 0xFF, 0xFF, 0xFF, 0xF3, 0x27, 0x65, 0x40, 0x1F, 0xFF);
345}
346
347static void dmt028vghmcmi_1a_gip_sequence(struct st7701 *st7701)
348{
349 ST7701_WRITE(st7701, 0xEE, 0x42);
350 ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
351
352 ST7701_WRITE(st7701, 0xE1,
353 0x04, 0xA0, 0x06, 0xA0,
354 0x05, 0xA0, 0x07, 0xA0,
355 0x00, 0x44, 0x44);
356 ST7701_WRITE(st7701, 0xE2,
357 0x00, 0x00, 0x00, 0x00,
358 0x00, 0x00, 0x00, 0x00,
359 0x00, 0x00, 0x00, 0x00);
360 ST7701_WRITE(st7701, 0xE3,
361 0x00, 0x00, 0x22, 0x22);
362 ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
363 ST7701_WRITE(st7701, 0xE5,
364 0x0C, 0x90, 0xA0, 0xA0,
365 0x0E, 0x92, 0xA0, 0xA0,
366 0x08, 0x8C, 0xA0, 0xA0,
367 0x0A, 0x8E, 0xA0, 0xA0);
368 ST7701_WRITE(st7701, 0xE6,
369 0x00, 0x00, 0x22, 0x22);
370 ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
371 ST7701_WRITE(st7701, 0xE8,
372 0x0D, 0x91, 0xA0, 0xA0,
373 0x0F, 0x93, 0xA0, 0xA0,
374 0x09, 0x8D, 0xA0, 0xA0,
375 0x0B, 0x8F, 0xA0, 0xA0);
376 ST7701_WRITE(st7701, 0xEB,
377 0x00, 0x00, 0xE4, 0xE4,
378 0x44, 0x00, 0x00);
379 ST7701_WRITE(st7701, 0xED,
380 0xFF, 0xF5, 0x47, 0x6F,
381 0x0B, 0xA1, 0xAB, 0xFF,
382 0xFF, 0xBA, 0x1A, 0xB0,
383 0xF6, 0x74, 0x5F, 0xFF);
384 ST7701_WRITE(st7701, 0xEF,
385 0x08, 0x08, 0x08, 0x40,
386 0x3F, 0x64);
387
388 st7701_switch_cmd_bkx(st7701, false, 0);
389
390 st7701_switch_cmd_bkx(st7701, true, 3);
391 ST7701_WRITE(st7701, 0xE6, 0x7C);
392 ST7701_WRITE(st7701, 0xE8, 0x00, 0x0E);
393
394 st7701_switch_cmd_bkx(st7701, false, 0);
395 ST7701_WRITE(st7701, 0x11);
396 msleep(120);
397
398 st7701_switch_cmd_bkx(st7701, true, 3);
399 ST7701_WRITE(st7701, 0xE8, 0x00, 0x0C);
400 msleep(10);
401 ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
402
403 st7701_switch_cmd_bkx(st7701, false, 0);
404 ST7701_WRITE(st7701, 0x11);
405 msleep(120);
406 ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
407
408 st7701_switch_cmd_bkx(st7701, false, 0);
409
410 ST7701_WRITE(st7701, 0x3A, 0x70);
411}
412
413static void kd50t048a_gip_sequence(struct st7701 *st7701)
414{
415 /**
416 * ST7701_SPEC_V1.2 is unable to provide enough information above this
417 * specific command sequence, so grab the same from vendor BSP driver.
418 */
419 ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
420 ST7701_WRITE(st7701, 0xE1, 0x08, 0x00, 0x0A, 0x00, 0x07, 0x00, 0x09,
421 0x00, 0x00, 0x33, 0x33);
422 ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
423 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
424 ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x33);
425 ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
426 ST7701_WRITE(st7701, 0xE5, 0x0E, 0x60, 0xA0, 0xA0, 0x10, 0x60, 0xA0,
427 0xA0, 0x0A, 0x60, 0xA0, 0xA0, 0x0C, 0x60, 0xA0, 0xA0);
428 ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x33);
429 ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
430 ST7701_WRITE(st7701, 0xE8, 0x0D, 0x60, 0xA0, 0xA0, 0x0F, 0x60, 0xA0,
431 0xA0, 0x09, 0x60, 0xA0, 0xA0, 0x0B, 0x60, 0xA0, 0xA0);
432 ST7701_WRITE(st7701, 0xEB, 0x02, 0x01, 0xE4, 0xE4, 0x44, 0x00, 0x40);
433 ST7701_WRITE(st7701, 0xEC, 0x02, 0x01);
434 ST7701_WRITE(st7701, 0xED, 0xAB, 0x89, 0x76, 0x54, 0x01, 0xFF, 0xFF,
435 0xFF, 0xFF, 0xFF, 0xFF, 0x10, 0x45, 0x67, 0x98, 0xBA);
436}
437
438static void rg_arc_gip_sequence(struct st7701 *st7701)
439{
440 st7701_switch_cmd_bkx(st7701, true, 3);
441 ST7701_WRITE(st7701, 0xEF, 0x08);
442 st7701_switch_cmd_bkx(st7701, true, 0);
443 ST7701_WRITE(st7701, 0xC7, 0x04);
444 ST7701_WRITE(st7701, 0xCC, 0x38);
445 st7701_switch_cmd_bkx(st7701, true, 1);
446 ST7701_WRITE(st7701, 0xB9, 0x10);
447 ST7701_WRITE(st7701, 0xBC, 0x03);
448 ST7701_WRITE(st7701, 0xC0, 0x89);
449 ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
450 ST7701_WRITE(st7701, 0xE1, 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00,
451 0x00, 0x00, 0x20, 0x20);
452 ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
453 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
454 ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x33, 0x00);
455 ST7701_WRITE(st7701, 0xE4, 0x22, 0x00);
456 ST7701_WRITE(st7701, 0xE5, 0x04, 0x5C, 0xA0, 0xA0, 0x06, 0x5C, 0xA0,
457 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
458 ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x33, 0x00);
459 ST7701_WRITE(st7701, 0xE7, 0x22, 0x00);
460 ST7701_WRITE(st7701, 0xE8, 0x05, 0x5C, 0xA0, 0xA0, 0x07, 0x5C, 0xA0,
461 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
462 ST7701_WRITE(st7701, 0xEB, 0x02, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00);
463 ST7701_WRITE(st7701, 0xEC, 0x00, 0x00);
464 ST7701_WRITE(st7701, 0xED, 0xFA, 0x45, 0x0B, 0xFF, 0xFF, 0xFF, 0xFF,
465 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xB0, 0x54, 0xAF);
466 ST7701_WRITE(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);
467 st7701_switch_cmd_bkx(st7701, false, 0);
468 ST7701_WRITE(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x17);
469 ST7701_WRITE(st7701, MIPI_DCS_SET_PIXEL_FORMAT, 0x77);
470 ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE, 0x00);
471 msleep(120);
472}
473
474static void rg28xx_gip_sequence(struct st7701 *st7701)
475{
476 st7701_switch_cmd_bkx(st7701, true, 3);
477 ST7701_WRITE(st7701, 0xEF, 0x08);
478
479 st7701_switch_cmd_bkx(st7701, true, 0);
480 ST7701_WRITE(st7701, 0xC3, 0x02, 0x10, 0x02);
481 ST7701_WRITE(st7701, 0xC7, 0x04);
482 ST7701_WRITE(st7701, 0xCC, 0x10);
483
484 st7701_switch_cmd_bkx(st7701, true, 1);
485 ST7701_WRITE(st7701, 0xEE, 0x42);
486 ST7701_WRITE(st7701, 0xE0, 0x00, 0x00, 0x02);
487
488 ST7701_WRITE(st7701, 0xE1, 0x04, 0xA0, 0x06, 0xA0, 0x05, 0xA0, 0x07, 0xA0,
489 0x00, 0x44, 0x44);
490 ST7701_WRITE(st7701, 0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
491 0x00, 0x00, 0x00, 0x00);
492 ST7701_WRITE(st7701, 0xE3, 0x00, 0x00, 0x22, 0x22);
493 ST7701_WRITE(st7701, 0xE4, 0x44, 0x44);
494 ST7701_WRITE(st7701, 0xE5, 0x0C, 0x90, 0xA0, 0xA0, 0x0E, 0x92, 0xA0, 0xA0,
495 0x08, 0x8C, 0xA0, 0xA0, 0x0A, 0x8E, 0xA0, 0xA0);
496 ST7701_WRITE(st7701, 0xE6, 0x00, 0x00, 0x22, 0x22);
497 ST7701_WRITE(st7701, 0xE7, 0x44, 0x44);
498 ST7701_WRITE(st7701, 0xE8, 0x0D, 0x91, 0xA0, 0xA0, 0x0F, 0x93, 0xA0, 0xA0,
499 0x09, 0x8D, 0xA0, 0xA0, 0x0B, 0x8F, 0xA0, 0xA0);
500 ST7701_WRITE(st7701, 0xEB, 0x00, 0x00, 0xE4, 0xE4, 0x44, 0x00, 0x40);
501 ST7701_WRITE(st7701, 0xED, 0xFF, 0xF5, 0x47, 0x6F, 0x0B, 0xA1, 0xBA, 0xFF,
502 0xFF, 0xAB, 0x1A, 0xB0, 0xF6, 0x74, 0x5F, 0xFF);
503 ST7701_WRITE(st7701, 0xEF, 0x08, 0x08, 0x08, 0x45, 0x3F, 0x54);
504
505 st7701_switch_cmd_bkx(st7701, false, 0);
506
507 st7701_switch_cmd_bkx(st7701, true, 3);
508 ST7701_WRITE(st7701, 0xE6, 0x16);
509 ST7701_WRITE(st7701, 0xE8, 0x00, 0x0E);
510
511 st7701_switch_cmd_bkx(st7701, false, 0);
512 ST7701_WRITE(st7701, MIPI_DCS_SET_ADDRESS_MODE, 0x10);
513 ST7701_WRITE(st7701, MIPI_DCS_EXIT_SLEEP_MODE);
514 msleep(120);
515
516 st7701_switch_cmd_bkx(st7701, true, 3);
517 ST7701_WRITE(st7701, 0xE8, 0x00, 0x0C);
518 msleep(10);
519 ST7701_WRITE(st7701, 0xE8, 0x00, 0x00);
520 st7701_switch_cmd_bkx(st7701, false, 0);
521}
522
523static int st7701_prepare(struct drm_panel *panel)
524{
525 struct st7701 *st7701 = panel_to_st7701(panel);
526 int ret;
527
528 gpiod_set_value(st7701->reset, 0);
529
530 ret = regulator_bulk_enable(ARRAY_SIZE(st7701->supplies),
531 st7701->supplies);
532 if (ret < 0)
533 return ret;
534 msleep(20);
535
536 gpiod_set_value(st7701->reset, 1);
537 msleep(150);
538
539 st7701_init_sequence(st7701);
540
541 if (st7701->desc->gip_sequence)
542 st7701->desc->gip_sequence(st7701);
543
544 /* Disable Command2 */
545 st7701_switch_cmd_bkx(st7701, false, 0);
546
547 return 0;
548}
549
550static int st7701_enable(struct drm_panel *panel)
551{
552 struct st7701 *st7701 = panel_to_st7701(panel);
553
554 ST7701_WRITE(st7701, MIPI_DCS_SET_DISPLAY_ON, 0x00);
555
556 return 0;
557}
558
559static int st7701_disable(struct drm_panel *panel)
560{
561 struct st7701 *st7701 = panel_to_st7701(panel);
562
563 ST7701_WRITE(st7701, MIPI_DCS_SET_DISPLAY_OFF, 0x00);
564
565 return 0;
566}
567
568static int st7701_unprepare(struct drm_panel *panel)
569{
570 struct st7701 *st7701 = panel_to_st7701(panel);
571
572 ST7701_WRITE(st7701, MIPI_DCS_ENTER_SLEEP_MODE, 0x00);
573
574 msleep(st7701->sleep_delay);
575
576 gpiod_set_value(st7701->reset, 0);
577
578 /**
579 * During the Resetting period, the display will be blanked
580 * (The display is entering blanking sequence, which maximum
581 * time is 120 ms, when Reset Starts in Sleep Out –mode. The
582 * display remains the blank state in Sleep In –mode.) and
583 * then return to Default condition for Hardware Reset.
584 *
585 * So we need wait sleep_delay time to make sure reset completed.
586 */
587 msleep(st7701->sleep_delay);
588
589 regulator_bulk_disable(ARRAY_SIZE(st7701->supplies), st7701->supplies);
590
591 return 0;
592}
593
594static int st7701_get_modes(struct drm_panel *panel,
595 struct drm_connector *connector)
596{
597 struct st7701 *st7701 = panel_to_st7701(panel);
598 const struct drm_display_mode *desc_mode = st7701->desc->mode;
599 struct drm_display_mode *mode;
600
601 mode = drm_mode_duplicate(connector->dev, desc_mode);
602 if (!mode) {
603 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
604 desc_mode->hdisplay, desc_mode->vdisplay,
605 drm_mode_vrefresh(desc_mode));
606 return -ENOMEM;
607 }
608
609 drm_mode_set_name(mode);
610 drm_mode_probed_add(connector, mode);
611
612 connector->display_info.width_mm = desc_mode->width_mm;
613 connector->display_info.height_mm = desc_mode->height_mm;
614
615 /*
616 * TODO: Remove once all drm drivers call
617 * drm_connector_set_orientation_from_panel()
618 */
619 drm_connector_set_panel_orientation(connector, st7701->orientation);
620
621 return 1;
622}
623
624static enum drm_panel_orientation st7701_get_orientation(struct drm_panel *panel)
625{
626 struct st7701 *st7701 = panel_to_st7701(panel);
627
628 return st7701->orientation;
629}
630
631static const struct drm_panel_funcs st7701_funcs = {
632 .disable = st7701_disable,
633 .unprepare = st7701_unprepare,
634 .prepare = st7701_prepare,
635 .enable = st7701_enable,
636 .get_modes = st7701_get_modes,
637 .get_orientation = st7701_get_orientation,
638};
639
640static const struct drm_display_mode ts8550b_mode = {
641 .clock = 27500,
642
643 .hdisplay = 480,
644 .hsync_start = 480 + 38,
645 .hsync_end = 480 + 38 + 12,
646 .htotal = 480 + 38 + 12 + 12,
647
648 .vdisplay = 854,
649 .vsync_start = 854 + 18,
650 .vsync_end = 854 + 18 + 8,
651 .vtotal = 854 + 18 + 8 + 4,
652
653 .width_mm = 69,
654 .height_mm = 139,
655
656 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
657};
658
659static const struct st7701_panel_desc ts8550b_desc = {
660 .mode = &ts8550b_mode,
661 .lanes = 2,
662 .format = MIPI_DSI_FMT_RGB888,
663 .panel_sleep_delay = 80, /* panel need extra 80ms for sleep out cmd */
664
665 .pv_gamma = {
666 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
667 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
668 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
669 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
670 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
671 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
672 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
673
674 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
675 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
676 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x8),
677 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x8),
678 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
679
680 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
681 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x23),
682 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
683 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
684 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
685
686 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x12),
687 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
688 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2b),
689 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
690 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
691 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
692 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
693 },
694 .nv_gamma = {
695 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
696 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
697 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
698 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xe),
699 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x2) |
700 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x15),
701 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xf),
702
703 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
704 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x13),
705 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x7),
706 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x9),
707 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
708
709 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
710 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x22),
711 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
712 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
713 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x10),
714
715 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
716 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
717 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x2c),
718 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
719 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x34),
720 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
721 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
722 },
723 .nlinv = 7,
724 .vop_uv = 4400000,
725 .vcom_uv = 337500,
726 .vgh_mv = 15000,
727 .vgl_mv = -9510,
728 .avdd_mv = 6600,
729 .avcl_mv = -4400,
730 .gamma_op_bias = OP_BIAS_MAX,
731 .input_op_bias = OP_BIAS_MIN,
732 .output_op_bias = OP_BIAS_MIN,
733 .t2d_ns = 1600,
734 .t3d_ns = 10400,
735 .eot_en = true,
736 .gip_sequence = ts8550b_gip_sequence,
737};
738
739static const struct drm_display_mode dmt028vghmcmi_1a_mode = {
740 .clock = 22325,
741
742 .hdisplay = 480,
743 .hsync_start = 480 + 40,
744 .hsync_end = 480 + 40 + 4,
745 .htotal = 480 + 40 + 4 + 20,
746
747 .vdisplay = 640,
748 .vsync_start = 640 + 2,
749 .vsync_end = 640 + 2 + 40,
750 .vtotal = 640 + 2 + 40 + 16,
751
752 .width_mm = 56,
753 .height_mm = 78,
754
755 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
756
757 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
758};
759
760static const struct st7701_panel_desc dmt028vghmcmi_1a_desc = {
761 .mode = &dmt028vghmcmi_1a_mode,
762 .lanes = 2,
763 .format = MIPI_DSI_FMT_RGB888,
764 .panel_sleep_delay = 5, /* panel need extra 5ms for sleep out cmd */
765
766 .pv_gamma = {
767 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
768 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
769 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
770 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x10),
771 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
772 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x17),
773 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
774
775 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
776 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
777 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
778 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x5),
779 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
780
781 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
782 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1f),
783 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
784 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
785 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x11),
786
787 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
788 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
789 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x29),
790 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
791 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
792 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
793 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
794 },
795 .nv_gamma = {
796 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
797 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
798 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
799 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
800 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
801 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
802 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xe),
803
804 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
805 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
806 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
807 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x4),
808 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
809
810 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
811 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
812 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
813 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
814 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
815
816 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x13),
817 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
818 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x26),
819 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
820 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
821 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
822 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
823 },
824 .nlinv = 1,
825 .vop_uv = 4800000,
826 .vcom_uv = 1650000,
827 .vgh_mv = 15000,
828 .vgl_mv = -10170,
829 .avdd_mv = 6600,
830 .avcl_mv = -4400,
831 .gamma_op_bias = OP_BIAS_MIDDLE,
832 .input_op_bias = OP_BIAS_MIN,
833 .output_op_bias = OP_BIAS_MIN,
834 .t2d_ns = 1600,
835 .t3d_ns = 10400,
836 .eot_en = true,
837 .gip_sequence = dmt028vghmcmi_1a_gip_sequence,
838};
839
840static const struct drm_display_mode kd50t048a_mode = {
841 .clock = 27500,
842
843 .hdisplay = 480,
844 .hsync_start = 480 + 2,
845 .hsync_end = 480 + 2 + 10,
846 .htotal = 480 + 2 + 10 + 2,
847
848 .vdisplay = 854,
849 .vsync_start = 854 + 2,
850 .vsync_end = 854 + 2 + 2,
851 .vtotal = 854 + 2 + 2 + 17,
852
853 .width_mm = 69,
854 .height_mm = 139,
855
856 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
857};
858
859static const struct st7701_panel_desc kd50t048a_desc = {
860 .mode = &kd50t048a_mode,
861 .lanes = 2,
862 .format = MIPI_DSI_FMT_RGB888,
863 .panel_sleep_delay = 0,
864
865 .pv_gamma = {
866 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
867 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
868 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
869 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
870 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
871 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
872 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
873
874 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
875 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
876 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
877 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x2),
878 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
879
880 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
881 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1e),
882 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
883 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
884 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
885
886 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
887 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
888 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x23),
889 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
890 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
891 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
892 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
893 },
894 .nv_gamma = {
895 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
896 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
897 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
898 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xc),
899 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
900 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
901 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xc),
902
903 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
904 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x10),
905 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x5),
906 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x3),
907 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
908
909 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
910 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
911 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
912 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
913 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
914
915 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x11),
916 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 2) |
917 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x24),
918 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
919 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x29),
920 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
921 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x18)
922 },
923 .nlinv = 1,
924 .vop_uv = 4887500,
925 .vcom_uv = 937500,
926 .vgh_mv = 15000,
927 .vgl_mv = -9510,
928 .avdd_mv = 6600,
929 .avcl_mv = -4400,
930 .gamma_op_bias = OP_BIAS_MIDDLE,
931 .input_op_bias = OP_BIAS_MIN,
932 .output_op_bias = OP_BIAS_MIN,
933 .t2d_ns = 1600,
934 .t3d_ns = 10400,
935 .eot_en = true,
936 .gip_sequence = kd50t048a_gip_sequence,
937};
938
939static const struct drm_display_mode rg_arc_mode = {
940 .clock = 25600,
941
942 .hdisplay = 480,
943 .hsync_start = 480 + 60,
944 .hsync_end = 480 + 60 + 42,
945 .htotal = 480 + 60 + 42 + 60,
946
947 .vdisplay = 640,
948 .vsync_start = 640 + 10,
949 .vsync_end = 640 + 10 + 4,
950 .vtotal = 640 + 10 + 4 + 16,
951
952 .width_mm = 63,
953 .height_mm = 84,
954
955 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
956};
957
958static const struct st7701_panel_desc rg_arc_desc = {
959 .mode = &rg_arc_mode,
960 .lanes = 2,
961 .format = MIPI_DSI_FMT_RGB888,
962 .panel_sleep_delay = 80,
963
964 .pv_gamma = {
965 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
966 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
967 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
968 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
969 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
970 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1d),
971 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
972
973 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
974 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x12),
975 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
976 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
977 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x0a),
978
979 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
980 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x25),
981 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
982 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
983 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x03),
984
985 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
986 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
987 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
988 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
989 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
990 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
991 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
992 },
993 .nv_gamma = {
994 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0x01) |
995 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
996 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
997 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x16),
998 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
999 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x1e),
1000 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0x0e),
1001
1002 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1003 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
1004 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x06),
1005 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x0c),
1006 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x08),
1007
1008 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x09),
1009 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x26),
1010 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x00),
1011 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1012 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x15),
1013
1014 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x00),
1015 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1016 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x3f),
1017 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1018 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x3f),
1019 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1020 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1c)
1021 },
1022 .nlinv = 0,
1023 .vop_uv = 4500000,
1024 .vcom_uv = 762500,
1025 .vgh_mv = 15000,
1026 .vgl_mv = -9510,
1027 .avdd_mv = 6600,
1028 .avcl_mv = -4400,
1029 .gamma_op_bias = OP_BIAS_MIDDLE,
1030 .input_op_bias = OP_BIAS_MIN,
1031 .output_op_bias = OP_BIAS_MIN,
1032 .t2d_ns = 1600,
1033 .t3d_ns = 10400,
1034 .eot_en = true,
1035 .gip_sequence = rg_arc_gip_sequence,
1036};
1037
1038static const struct drm_display_mode rg28xx_mode = {
1039 .clock = 22325,
1040
1041 .hdisplay = 480,
1042 .hsync_start = 480 + 40,
1043 .hsync_end = 480 + 40 + 4,
1044 .htotal = 480 + 40 + 4 + 20,
1045
1046 .vdisplay = 640,
1047 .vsync_start = 640 + 2,
1048 .vsync_end = 640 + 2 + 40,
1049 .vtotal = 640 + 2 + 40 + 16,
1050
1051 .width_mm = 44,
1052 .height_mm = 58,
1053
1054 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
1055
1056 .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
1057};
1058
1059static const struct st7701_panel_desc rg28xx_desc = {
1060 .mode = &rg28xx_mode,
1061
1062 .panel_sleep_delay = 80,
1063
1064 .pv_gamma = {
1065 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1066 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
1067 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1068 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0x10),
1069 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1070 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x17),
1071 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xd),
1072
1073 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1074 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
1075 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
1076 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x5),
1077 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
1078
1079 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x7),
1080 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x1f),
1081 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x4),
1082 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1083 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x11),
1084
1085 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0xe),
1086 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1087 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x29),
1088 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1089 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
1090 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1091 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
1092 },
1093 .nv_gamma = {
1094 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1095 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC0_MASK, 0),
1096 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1097 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC4_MASK, 0xd),
1098 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1099 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC8_MASK, 0x14),
1100 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC16_MASK, 0xe),
1101
1102 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1103 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC24_MASK, 0x11),
1104 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC52_MASK, 0x6),
1105 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC80_MASK, 0x4),
1106 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC108_MASK, 0x8),
1107
1108 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC147_MASK, 0x8),
1109 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC175_MASK, 0x20),
1110 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC203_MASK, 0x5),
1111 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1112 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC231_MASK, 0x13),
1113
1114 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC239_MASK, 0x13),
1115 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1116 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC247_MASK, 0x26),
1117 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1118 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC251_MASK, 0x30),
1119 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_AJ_MASK, 0) |
1120 CFIELD_PREP(ST7701_CMD2_BK0_GAMCTRL_VC255_MASK, 0x1f)
1121 },
1122 .nlinv = 7,
1123 .vop_uv = 4800000,
1124 .vcom_uv = 1512500,
1125 .vgh_mv = 15000,
1126 .vgl_mv = -11730,
1127 .avdd_mv = 6600,
1128 .avcl_mv = -4400,
1129 .gamma_op_bias = OP_BIAS_MIDDLE,
1130 .input_op_bias = OP_BIAS_MIN,
1131 .output_op_bias = OP_BIAS_MIN,
1132 .t2d_ns = 1600,
1133 .t3d_ns = 10400,
1134 .eot_en = true,
1135 .gip_sequence = rg28xx_gip_sequence,
1136};
1137
1138static void st7701_cleanup(void *data)
1139{
1140 struct st7701 *st7701 = (struct st7701 *)data;
1141
1142 drm_panel_remove(&st7701->panel);
1143 drm_panel_disable(&st7701->panel);
1144 drm_panel_unprepare(&st7701->panel);
1145}
1146
1147static int st7701_probe(struct device *dev, int connector_type)
1148{
1149 const struct st7701_panel_desc *desc;
1150 struct st7701 *st7701;
1151 int ret;
1152
1153 st7701 = devm_kzalloc(dev, sizeof(*st7701), GFP_KERNEL);
1154 if (!st7701)
1155 return -ENOMEM;
1156
1157 desc = of_device_get_match_data(dev);
1158 if (!desc)
1159 return -ENODEV;
1160
1161 st7701->supplies[0].supply = "VCC";
1162 st7701->supplies[1].supply = "IOVCC";
1163
1164 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st7701->supplies),
1165 st7701->supplies);
1166 if (ret < 0)
1167 return ret;
1168
1169 st7701->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
1170 if (IS_ERR(st7701->reset)) {
1171 dev_err(dev, "Couldn't get our reset GPIO\n");
1172 return PTR_ERR(st7701->reset);
1173 }
1174
1175 ret = of_drm_get_panel_orientation(dev->of_node, &st7701->orientation);
1176 if (ret < 0)
1177 return dev_err_probe(dev, ret, "Failed to get orientation\n");
1178
1179 drm_panel_init(&st7701->panel, dev, &st7701_funcs, connector_type);
1180 st7701->panel.prepare_prev_first = true;
1181
1182 /**
1183 * Once sleep out has been issued, ST7701 IC required to wait 120ms
1184 * before initiating new commands.
1185 *
1186 * On top of that some panels might need an extra delay to wait, so
1187 * add panel specific delay for those cases. As now this panel specific
1188 * delay information is referenced from those panel BSP driver, example
1189 * ts8550b and there is no valid documentation for that.
1190 */
1191 st7701->sleep_delay = 120 + desc->panel_sleep_delay;
1192
1193 ret = drm_panel_of_backlight(&st7701->panel);
1194 if (ret)
1195 return ret;
1196
1197 drm_panel_add(&st7701->panel);
1198
1199 dev_set_drvdata(dev, st7701);
1200 st7701->desc = desc;
1201
1202 return devm_add_action_or_reset(dev, st7701_cleanup, st7701);
1203}
1204
1205static int st7701_dsi_probe(struct mipi_dsi_device *dsi)
1206{
1207 struct st7701 *st7701;
1208 int err;
1209
1210 err = st7701_probe(&dsi->dev, DRM_MODE_CONNECTOR_DSI);
1211 if (err)
1212 return err;
1213
1214 st7701 = dev_get_drvdata(&dsi->dev);
1215 st7701->dsi = dsi;
1216 st7701->write_command = st7701_dsi_write;
1217
1218 if (!st7701->desc->lanes)
1219 return dev_err_probe(&dsi->dev, -EINVAL, "This panel is not for MIPI DSI\n");
1220
1221 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
1222 MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
1223 dsi->format = st7701->desc->format;
1224 dsi->lanes = st7701->desc->lanes;
1225
1226 err = mipi_dsi_attach(dsi);
1227 if (err)
1228 return dev_err_probe(&dsi->dev, err, "Failed to init MIPI DSI\n");
1229
1230 return 0;
1231}
1232
1233static int st7701_spi_probe(struct spi_device *spi)
1234{
1235 struct st7701 *st7701;
1236 struct gpio_desc *dc;
1237 int err;
1238
1239 err = st7701_probe(&spi->dev, DRM_MODE_CONNECTOR_DPI);
1240 if (err)
1241 return err;
1242
1243 st7701 = dev_get_drvdata(&spi->dev);
1244 st7701->write_command = st7701_dbi_write;
1245
1246 dc = devm_gpiod_get_optional(&spi->dev, "dc", GPIOD_OUT_LOW);
1247 if (IS_ERR(dc))
1248 return dev_err_probe(&spi->dev, PTR_ERR(dc), "Failed to get GPIO for D/CX\n");
1249
1250 err = mipi_dbi_spi_init(spi, &st7701->dbi, dc);
1251 if (err)
1252 return dev_err_probe(&spi->dev, err, "Failed to init MIPI DBI\n");
1253 st7701->dbi.read_commands = NULL;
1254
1255 return 0;
1256}
1257
1258static void st7701_dsi_remove(struct mipi_dsi_device *dsi)
1259{
1260 mipi_dsi_detach(dsi);
1261}
1262
1263static const struct of_device_id st7701_dsi_of_match[] = {
1264 { .compatible = "anbernic,rg-arc-panel", .data = &rg_arc_desc },
1265 { .compatible = "densitron,dmt028vghmcmi-1a", .data = &dmt028vghmcmi_1a_desc },
1266 { .compatible = "elida,kd50t048a", .data = &kd50t048a_desc },
1267 { .compatible = "techstar,ts8550b", .data = &ts8550b_desc },
1268 { }
1269};
1270MODULE_DEVICE_TABLE(of, st7701_dsi_of_match);
1271
1272static const struct of_device_id st7701_spi_of_match[] = {
1273 { .compatible = "anbernic,rg28xx-panel", .data = &rg28xx_desc },
1274 { /* sentinel */ }
1275};
1276MODULE_DEVICE_TABLE(of, st7701_spi_of_match);
1277
1278static const struct spi_device_id st7701_spi_ids[] = {
1279 { "rg28xx-panel" },
1280 { /* sentinel */ }
1281};
1282MODULE_DEVICE_TABLE(spi, st7701_spi_ids);
1283
1284static struct mipi_dsi_driver st7701_dsi_driver = {
1285 .probe = st7701_dsi_probe,
1286 .remove = st7701_dsi_remove,
1287 .driver = {
1288 .name = "st7701",
1289 .of_match_table = st7701_dsi_of_match,
1290 },
1291};
1292
1293static struct spi_driver st7701_spi_driver = {
1294 .probe = st7701_spi_probe,
1295 .id_table = st7701_spi_ids,
1296 .driver = {
1297 .name = "st7701",
1298 .of_match_table = st7701_spi_of_match,
1299 },
1300};
1301
1302static int __init st7701_driver_init(void)
1303{
1304 int err;
1305
1306 if (IS_ENABLED(CONFIG_SPI)) {
1307 err = spi_register_driver(&st7701_spi_driver);
1308 if (err)
1309 return err;
1310 }
1311
1312 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
1313 err = mipi_dsi_driver_register(&st7701_dsi_driver);
1314 if (err) {
1315 if (IS_ENABLED(CONFIG_SPI))
1316 spi_unregister_driver(&st7701_spi_driver);
1317 return err;
1318 }
1319 }
1320
1321 return 0;
1322}
1323module_init(st7701_driver_init);
1324
1325static void __exit st7701_driver_exit(void)
1326{
1327 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
1328 mipi_dsi_driver_unregister(&st7701_dsi_driver);
1329
1330 if (IS_ENABLED(CONFIG_SPI))
1331 spi_unregister_driver(&st7701_spi_driver);
1332}
1333module_exit(st7701_driver_exit);
1334
1335MODULE_AUTHOR("Jagan Teki <jagan@amarulasolutions.com>");
1336MODULE_AUTHOR("Hironori KIKUCHI <kikuchan98@gmail.com>");
1337MODULE_DESCRIPTION("Sitronix ST7701 LCD Panel Driver");
1338MODULE_LICENSE("GPL");