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a689554b HL |
1 | /* |
2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 and | |
6 | * only version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #include <linux/clk.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/err.h> | |
17 | #include <linux/gpio.h> | |
964a0754 | 18 | #include <linux/gpio/consumer.h> |
a689554b HL |
19 | #include <linux/interrupt.h> |
20 | #include <linux/of_device.h> | |
21 | #include <linux/of_gpio.h> | |
22 | #include <linux/of_irq.h> | |
ab8909b0 | 23 | #include <linux/pinctrl/consumer.h> |
f7009d26 | 24 | #include <linux/of_graph.h> |
a689554b HL |
25 | #include <linux/regulator/consumer.h> |
26 | #include <linux/spinlock.h> | |
0c7df47f AT |
27 | #include <linux/mfd/syscon.h> |
28 | #include <linux/regmap.h> | |
a689554b HL |
29 | #include <video/mipi_display.h> |
30 | ||
31 | #include "dsi.h" | |
32 | #include "dsi.xml.h" | |
0c7df47f | 33 | #include "sfpb.xml.h" |
d248b61f | 34 | #include "dsi_cfg.h" |
f59f62d5 | 35 | #include "msm_kms.h" |
a689554b HL |
36 | |
37 | static int dsi_get_version(const void __iomem *base, u32 *major, u32 *minor) | |
38 | { | |
39 | u32 ver; | |
a689554b HL |
40 | |
41 | if (!major || !minor) | |
42 | return -EINVAL; | |
43 | ||
648d5063 AT |
44 | /* |
45 | * From DSI6G(v3), addition of a 6G_HW_VERSION register at offset 0 | |
a689554b | 46 | * makes all other registers 4-byte shifted down. |
648d5063 AT |
47 | * |
48 | * In order to identify between DSI6G(v3) and beyond, and DSIv2 and | |
49 | * older, we read the DSI_VERSION register without any shift(offset | |
50 | * 0x1f0). In the case of DSIv2, this hast to be a non-zero value. In | |
51 | * the case of DSI6G, this has to be zero (the offset points to a | |
52 | * scratch register which we never touch) | |
a689554b | 53 | */ |
648d5063 AT |
54 | |
55 | ver = msm_readl(base + REG_DSI_VERSION); | |
56 | if (ver) { | |
57 | /* older dsi host, there is no register shift */ | |
a689554b HL |
58 | ver = FIELD(ver, DSI_VERSION_MAJOR); |
59 | if (ver <= MSM_DSI_VER_MAJOR_V2) { | |
60 | /* old versions */ | |
61 | *major = ver; | |
62 | *minor = 0; | |
63 | return 0; | |
64 | } else { | |
65 | return -EINVAL; | |
66 | } | |
67 | } else { | |
648d5063 AT |
68 | /* |
69 | * newer host, offset 0 has 6G_HW_VERSION, the rest of the | |
70 | * registers are shifted down, read DSI_VERSION again with | |
71 | * the shifted offset | |
72 | */ | |
a689554b HL |
73 | ver = msm_readl(base + DSI_6G_REG_SHIFT + REG_DSI_VERSION); |
74 | ver = FIELD(ver, DSI_VERSION_MAJOR); | |
75 | if (ver == MSM_DSI_VER_MAJOR_6G) { | |
76 | /* 6G version */ | |
77 | *major = ver; | |
648d5063 | 78 | *minor = msm_readl(base + REG_DSI_6G_HW_VERSION); |
a689554b HL |
79 | return 0; |
80 | } else { | |
81 | return -EINVAL; | |
82 | } | |
83 | } | |
84 | } | |
85 | ||
86 | #define DSI_ERR_STATE_ACK 0x0000 | |
87 | #define DSI_ERR_STATE_TIMEOUT 0x0001 | |
88 | #define DSI_ERR_STATE_DLN0_PHY 0x0002 | |
89 | #define DSI_ERR_STATE_FIFO 0x0004 | |
90 | #define DSI_ERR_STATE_MDP_FIFO_UNDERFLOW 0x0008 | |
91 | #define DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION 0x0010 | |
92 | #define DSI_ERR_STATE_PLL_UNLOCKED 0x0020 | |
93 | ||
94 | #define DSI_CLK_CTRL_ENABLE_CLKS \ | |
95 | (DSI_CLK_CTRL_AHBS_HCLK_ON | DSI_CLK_CTRL_AHBM_SCLK_ON | \ | |
96 | DSI_CLK_CTRL_PCLK_ON | DSI_CLK_CTRL_DSICLK_ON | \ | |
97 | DSI_CLK_CTRL_BYTECLK_ON | DSI_CLK_CTRL_ESCCLK_ON | \ | |
98 | DSI_CLK_CTRL_FORCE_ON_DYN_AHBM_HCLK) | |
99 | ||
100 | struct msm_dsi_host { | |
101 | struct mipi_dsi_host base; | |
102 | ||
103 | struct platform_device *pdev; | |
104 | struct drm_device *dev; | |
105 | ||
106 | int id; | |
107 | ||
108 | void __iomem *ctrl_base; | |
ec31abf6 | 109 | struct regulator_bulk_data supplies[DSI_DEV_REGULATOR_MAX]; |
6e0eb52e AT |
110 | |
111 | struct clk *bus_clks[DSI_BUS_CLK_MAX]; | |
112 | ||
a689554b HL |
113 | struct clk *byte_clk; |
114 | struct clk *esc_clk; | |
115 | struct clk *pixel_clk; | |
9d32c498 HL |
116 | struct clk *byte_clk_src; |
117 | struct clk *pixel_clk_src; | |
118 | ||
a689554b | 119 | u32 byte_clk_rate; |
4bfa9748 AT |
120 | u32 esc_clk_rate; |
121 | ||
122 | /* DSI v2 specific clocks */ | |
123 | struct clk *src_clk; | |
124 | struct clk *esc_clk_src; | |
125 | struct clk *dsi_clk_src; | |
126 | ||
127 | u32 src_clk_rate; | |
a689554b HL |
128 | |
129 | struct gpio_desc *disp_en_gpio; | |
130 | struct gpio_desc *te_gpio; | |
131 | ||
d248b61f | 132 | const struct msm_dsi_cfg_handler *cfg_hnd; |
a689554b HL |
133 | |
134 | struct completion dma_comp; | |
135 | struct completion video_comp; | |
136 | struct mutex dev_mutex; | |
137 | struct mutex cmd_mutex; | |
138 | struct mutex clk_mutex; | |
139 | spinlock_t intr_lock; /* Protect interrupt ctrl register */ | |
140 | ||
141 | u32 err_work_state; | |
142 | struct work_struct err_work; | |
8d23ea40 | 143 | struct work_struct hpd_work; |
a689554b HL |
144 | struct workqueue_struct *workqueue; |
145 | ||
4ff9d4cb | 146 | /* DSI 6G TX buffer*/ |
a689554b | 147 | struct drm_gem_object *tx_gem_obj; |
4ff9d4cb AT |
148 | |
149 | /* DSI v2 TX buffer */ | |
150 | void *tx_buf; | |
151 | dma_addr_t tx_buf_paddr; | |
152 | ||
153 | int tx_size; | |
154 | ||
a689554b HL |
155 | u8 *rx_buf; |
156 | ||
0c7df47f AT |
157 | struct regmap *sfpb; |
158 | ||
a689554b HL |
159 | struct drm_display_mode *mode; |
160 | ||
a9ddac9c AT |
161 | /* connected device info */ |
162 | struct device_node *device_node; | |
a689554b HL |
163 | unsigned int channel; |
164 | unsigned int lanes; | |
165 | enum mipi_dsi_pixel_format format; | |
166 | unsigned long mode_flags; | |
167 | ||
26f7d1f4 AT |
168 | /* lane data parsed via DT */ |
169 | int dlane_swap; | |
170 | int num_data_lanes; | |
171 | ||
a689554b HL |
172 | u32 dma_cmd_ctrl_restore; |
173 | ||
174 | bool registered; | |
175 | bool power_on; | |
176 | int irq; | |
177 | }; | |
178 | ||
179 | static u32 dsi_get_bpp(const enum mipi_dsi_pixel_format fmt) | |
180 | { | |
181 | switch (fmt) { | |
182 | case MIPI_DSI_FMT_RGB565: return 16; | |
183 | case MIPI_DSI_FMT_RGB666_PACKED: return 18; | |
184 | case MIPI_DSI_FMT_RGB666: | |
185 | case MIPI_DSI_FMT_RGB888: | |
186 | default: return 24; | |
187 | } | |
188 | } | |
189 | ||
190 | static inline u32 dsi_read(struct msm_dsi_host *msm_host, u32 reg) | |
191 | { | |
d248b61f | 192 | return msm_readl(msm_host->ctrl_base + reg); |
a689554b HL |
193 | } |
194 | static inline void dsi_write(struct msm_dsi_host *msm_host, u32 reg, u32 data) | |
195 | { | |
d248b61f | 196 | msm_writel(data, msm_host->ctrl_base + reg); |
a689554b HL |
197 | } |
198 | ||
199 | static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host); | |
200 | static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host); | |
201 | ||
d248b61f HL |
202 | static const struct msm_dsi_cfg_handler *dsi_get_config( |
203 | struct msm_dsi_host *msm_host) | |
a689554b | 204 | { |
d248b61f | 205 | const struct msm_dsi_cfg_handler *cfg_hnd = NULL; |
31c92767 | 206 | struct device *dev = &msm_host->pdev->dev; |
a689554b | 207 | struct regulator *gdsc_reg; |
31c92767 | 208 | struct clk *ahb_clk; |
d248b61f | 209 | int ret; |
a689554b HL |
210 | u32 major = 0, minor = 0; |
211 | ||
31c92767 | 212 | gdsc_reg = regulator_get(dev, "gdsc"); |
bdc80de2 | 213 | if (IS_ERR(gdsc_reg)) { |
a689554b | 214 | pr_err("%s: cannot get gdsc\n", __func__); |
d248b61f | 215 | goto exit; |
a689554b | 216 | } |
31c92767 AT |
217 | |
218 | ahb_clk = clk_get(dev, "iface_clk"); | |
219 | if (IS_ERR(ahb_clk)) { | |
220 | pr_err("%s: cannot get interface clock\n", __func__); | |
221 | goto put_gdsc; | |
222 | } | |
223 | ||
a689554b HL |
224 | ret = regulator_enable(gdsc_reg); |
225 | if (ret) { | |
226 | pr_err("%s: unable to enable gdsc\n", __func__); | |
31c92767 | 227 | goto put_clk; |
a689554b | 228 | } |
31c92767 AT |
229 | |
230 | ret = clk_prepare_enable(ahb_clk); | |
a689554b HL |
231 | if (ret) { |
232 | pr_err("%s: unable to enable ahb_clk\n", __func__); | |
d248b61f | 233 | goto disable_gdsc; |
a689554b HL |
234 | } |
235 | ||
236 | ret = dsi_get_version(msm_host->ctrl_base, &major, &minor); | |
a689554b HL |
237 | if (ret) { |
238 | pr_err("%s: Invalid version\n", __func__); | |
d248b61f | 239 | goto disable_clks; |
a689554b HL |
240 | } |
241 | ||
d248b61f | 242 | cfg_hnd = msm_dsi_cfg_get(major, minor); |
a689554b | 243 | |
d248b61f HL |
244 | DBG("%s: Version %x:%x\n", __func__, major, minor); |
245 | ||
246 | disable_clks: | |
31c92767 | 247 | clk_disable_unprepare(ahb_clk); |
d248b61f HL |
248 | disable_gdsc: |
249 | regulator_disable(gdsc_reg); | |
31c92767 AT |
250 | put_clk: |
251 | clk_put(ahb_clk); | |
d248b61f HL |
252 | put_gdsc: |
253 | regulator_put(gdsc_reg); | |
254 | exit: | |
255 | return cfg_hnd; | |
a689554b HL |
256 | } |
257 | ||
258 | static inline struct msm_dsi_host *to_msm_dsi_host(struct mipi_dsi_host *host) | |
259 | { | |
260 | return container_of(host, struct msm_dsi_host, base); | |
261 | } | |
262 | ||
263 | static void dsi_host_regulator_disable(struct msm_dsi_host *msm_host) | |
264 | { | |
265 | struct regulator_bulk_data *s = msm_host->supplies; | |
d248b61f HL |
266 | const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; |
267 | int num = msm_host->cfg_hnd->cfg->reg_cfg.num; | |
a689554b HL |
268 | int i; |
269 | ||
270 | DBG(""); | |
271 | for (i = num - 1; i >= 0; i--) | |
272 | if (regs[i].disable_load >= 0) | |
2c33ce00 DA |
273 | regulator_set_load(s[i].consumer, |
274 | regs[i].disable_load); | |
a689554b HL |
275 | |
276 | regulator_bulk_disable(num, s); | |
277 | } | |
278 | ||
279 | static int dsi_host_regulator_enable(struct msm_dsi_host *msm_host) | |
280 | { | |
281 | struct regulator_bulk_data *s = msm_host->supplies; | |
d248b61f HL |
282 | const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; |
283 | int num = msm_host->cfg_hnd->cfg->reg_cfg.num; | |
a689554b HL |
284 | int ret, i; |
285 | ||
286 | DBG(""); | |
287 | for (i = 0; i < num; i++) { | |
288 | if (regs[i].enable_load >= 0) { | |
2c33ce00 DA |
289 | ret = regulator_set_load(s[i].consumer, |
290 | regs[i].enable_load); | |
a689554b HL |
291 | if (ret < 0) { |
292 | pr_err("regulator %d set op mode failed, %d\n", | |
293 | i, ret); | |
294 | goto fail; | |
295 | } | |
296 | } | |
297 | } | |
298 | ||
299 | ret = regulator_bulk_enable(num, s); | |
300 | if (ret < 0) { | |
301 | pr_err("regulator enable failed, %d\n", ret); | |
302 | goto fail; | |
303 | } | |
304 | ||
305 | return 0; | |
306 | ||
307 | fail: | |
308 | for (i--; i >= 0; i--) | |
2c33ce00 | 309 | regulator_set_load(s[i].consumer, regs[i].disable_load); |
a689554b HL |
310 | return ret; |
311 | } | |
312 | ||
313 | static int dsi_regulator_init(struct msm_dsi_host *msm_host) | |
314 | { | |
315 | struct regulator_bulk_data *s = msm_host->supplies; | |
d248b61f HL |
316 | const struct dsi_reg_entry *regs = msm_host->cfg_hnd->cfg->reg_cfg.regs; |
317 | int num = msm_host->cfg_hnd->cfg->reg_cfg.num; | |
a689554b HL |
318 | int i, ret; |
319 | ||
320 | for (i = 0; i < num; i++) | |
321 | s[i].supply = regs[i].name; | |
322 | ||
323 | ret = devm_regulator_bulk_get(&msm_host->pdev->dev, num, s); | |
324 | if (ret < 0) { | |
325 | pr_err("%s: failed to init regulator, ret=%d\n", | |
326 | __func__, ret); | |
327 | return ret; | |
328 | } | |
329 | ||
a689554b HL |
330 | return 0; |
331 | } | |
332 | ||
333 | static int dsi_clk_init(struct msm_dsi_host *msm_host) | |
334 | { | |
335 | struct device *dev = &msm_host->pdev->dev; | |
4bfa9748 AT |
336 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
337 | const struct msm_dsi_config *cfg = cfg_hnd->cfg; | |
6e0eb52e AT |
338 | int i, ret = 0; |
339 | ||
340 | /* get bus clocks */ | |
341 | for (i = 0; i < cfg->num_bus_clks; i++) { | |
342 | msm_host->bus_clks[i] = devm_clk_get(dev, | |
343 | cfg->bus_clk_names[i]); | |
344 | if (IS_ERR(msm_host->bus_clks[i])) { | |
345 | ret = PTR_ERR(msm_host->bus_clks[i]); | |
346 | pr_err("%s: Unable to get %s, ret = %d\n", | |
347 | __func__, cfg->bus_clk_names[i], ret); | |
348 | goto exit; | |
349 | } | |
a689554b HL |
350 | } |
351 | ||
6e0eb52e | 352 | /* get link and source clocks */ |
a689554b HL |
353 | msm_host->byte_clk = devm_clk_get(dev, "byte_clk"); |
354 | if (IS_ERR(msm_host->byte_clk)) { | |
355 | ret = PTR_ERR(msm_host->byte_clk); | |
356 | pr_err("%s: can't find dsi_byte_clk. ret=%d\n", | |
357 | __func__, ret); | |
358 | msm_host->byte_clk = NULL; | |
359 | goto exit; | |
360 | } | |
361 | ||
362 | msm_host->pixel_clk = devm_clk_get(dev, "pixel_clk"); | |
363 | if (IS_ERR(msm_host->pixel_clk)) { | |
364 | ret = PTR_ERR(msm_host->pixel_clk); | |
365 | pr_err("%s: can't find dsi_pixel_clk. ret=%d\n", | |
366 | __func__, ret); | |
367 | msm_host->pixel_clk = NULL; | |
368 | goto exit; | |
369 | } | |
370 | ||
371 | msm_host->esc_clk = devm_clk_get(dev, "core_clk"); | |
372 | if (IS_ERR(msm_host->esc_clk)) { | |
373 | ret = PTR_ERR(msm_host->esc_clk); | |
374 | pr_err("%s: can't find dsi_esc_clk. ret=%d\n", | |
375 | __func__, ret); | |
376 | msm_host->esc_clk = NULL; | |
377 | goto exit; | |
378 | } | |
379 | ||
e6c4c78c AT |
380 | msm_host->byte_clk_src = clk_get_parent(msm_host->byte_clk); |
381 | if (!msm_host->byte_clk_src) { | |
382 | ret = -ENODEV; | |
9d32c498 | 383 | pr_err("%s: can't find byte_clk_src. ret=%d\n", __func__, ret); |
9d32c498 HL |
384 | goto exit; |
385 | } | |
386 | ||
e6c4c78c AT |
387 | msm_host->pixel_clk_src = clk_get_parent(msm_host->pixel_clk); |
388 | if (!msm_host->pixel_clk_src) { | |
389 | ret = -ENODEV; | |
9d32c498 | 390 | pr_err("%s: can't find pixel_clk_src. ret=%d\n", __func__, ret); |
4bfa9748 | 391 | goto exit; |
9d32c498 HL |
392 | } |
393 | ||
4bfa9748 AT |
394 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_V2) { |
395 | msm_host->src_clk = devm_clk_get(dev, "src_clk"); | |
396 | if (IS_ERR(msm_host->src_clk)) { | |
397 | ret = PTR_ERR(msm_host->src_clk); | |
398 | pr_err("%s: can't find dsi_src_clk. ret=%d\n", | |
399 | __func__, ret); | |
400 | msm_host->src_clk = NULL; | |
401 | goto exit; | |
402 | } | |
403 | ||
404 | msm_host->esc_clk_src = clk_get_parent(msm_host->esc_clk); | |
405 | if (!msm_host->esc_clk_src) { | |
406 | ret = -ENODEV; | |
407 | pr_err("%s: can't get esc_clk_src. ret=%d\n", | |
408 | __func__, ret); | |
409 | goto exit; | |
410 | } | |
411 | ||
412 | msm_host->dsi_clk_src = clk_get_parent(msm_host->src_clk); | |
413 | if (!msm_host->dsi_clk_src) { | |
414 | ret = -ENODEV; | |
415 | pr_err("%s: can't get dsi_clk_src. ret=%d\n", | |
416 | __func__, ret); | |
417 | } | |
418 | } | |
a689554b HL |
419 | exit: |
420 | return ret; | |
421 | } | |
422 | ||
423 | static int dsi_bus_clk_enable(struct msm_dsi_host *msm_host) | |
424 | { | |
6e0eb52e AT |
425 | const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; |
426 | int i, ret; | |
a689554b HL |
427 | |
428 | DBG("id=%d", msm_host->id); | |
429 | ||
6e0eb52e AT |
430 | for (i = 0; i < cfg->num_bus_clks; i++) { |
431 | ret = clk_prepare_enable(msm_host->bus_clks[i]); | |
432 | if (ret) { | |
433 | pr_err("%s: failed to enable bus clock %d ret %d\n", | |
434 | __func__, i, ret); | |
435 | goto err; | |
436 | } | |
a689554b HL |
437 | } |
438 | ||
439 | return 0; | |
6e0eb52e AT |
440 | err: |
441 | for (; i > 0; i--) | |
442 | clk_disable_unprepare(msm_host->bus_clks[i]); | |
a689554b | 443 | |
a689554b HL |
444 | return ret; |
445 | } | |
446 | ||
447 | static void dsi_bus_clk_disable(struct msm_dsi_host *msm_host) | |
448 | { | |
6e0eb52e AT |
449 | const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; |
450 | int i; | |
451 | ||
a689554b | 452 | DBG(""); |
6e0eb52e AT |
453 | |
454 | for (i = cfg->num_bus_clks - 1; i >= 0; i--) | |
455 | clk_disable_unprepare(msm_host->bus_clks[i]); | |
a689554b HL |
456 | } |
457 | ||
4bfa9748 | 458 | static int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host) |
a689554b HL |
459 | { |
460 | int ret; | |
461 | ||
462 | DBG("Set clk rates: pclk=%d, byteclk=%d", | |
463 | msm_host->mode->clock, msm_host->byte_clk_rate); | |
464 | ||
465 | ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate); | |
466 | if (ret) { | |
467 | pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret); | |
468 | goto error; | |
469 | } | |
470 | ||
471 | ret = clk_set_rate(msm_host->pixel_clk, msm_host->mode->clock * 1000); | |
472 | if (ret) { | |
473 | pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); | |
474 | goto error; | |
475 | } | |
476 | ||
477 | ret = clk_prepare_enable(msm_host->esc_clk); | |
478 | if (ret) { | |
479 | pr_err("%s: Failed to enable dsi esc clk\n", __func__); | |
480 | goto error; | |
481 | } | |
482 | ||
483 | ret = clk_prepare_enable(msm_host->byte_clk); | |
484 | if (ret) { | |
485 | pr_err("%s: Failed to enable dsi byte clk\n", __func__); | |
486 | goto byte_clk_err; | |
487 | } | |
488 | ||
489 | ret = clk_prepare_enable(msm_host->pixel_clk); | |
490 | if (ret) { | |
491 | pr_err("%s: Failed to enable dsi pixel clk\n", __func__); | |
492 | goto pixel_clk_err; | |
493 | } | |
494 | ||
495 | return 0; | |
496 | ||
497 | pixel_clk_err: | |
498 | clk_disable_unprepare(msm_host->byte_clk); | |
499 | byte_clk_err: | |
500 | clk_disable_unprepare(msm_host->esc_clk); | |
501 | error: | |
502 | return ret; | |
503 | } | |
504 | ||
4bfa9748 | 505 | static int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host) |
a689554b | 506 | { |
4bfa9748 AT |
507 | int ret; |
508 | ||
509 | DBG("Set clk rates: pclk=%d, byteclk=%d, esc_clk=%d, dsi_src_clk=%d", | |
510 | msm_host->mode->clock, msm_host->byte_clk_rate, | |
511 | msm_host->esc_clk_rate, msm_host->src_clk_rate); | |
512 | ||
513 | ret = clk_set_rate(msm_host->byte_clk, msm_host->byte_clk_rate); | |
514 | if (ret) { | |
515 | pr_err("%s: Failed to set rate byte clk, %d\n", __func__, ret); | |
516 | goto error; | |
517 | } | |
518 | ||
519 | ret = clk_set_rate(msm_host->esc_clk, msm_host->esc_clk_rate); | |
520 | if (ret) { | |
521 | pr_err("%s: Failed to set rate esc clk, %d\n", __func__, ret); | |
522 | goto error; | |
523 | } | |
524 | ||
525 | ret = clk_set_rate(msm_host->src_clk, msm_host->src_clk_rate); | |
526 | if (ret) { | |
527 | pr_err("%s: Failed to set rate src clk, %d\n", __func__, ret); | |
528 | goto error; | |
529 | } | |
530 | ||
531 | ret = clk_set_rate(msm_host->pixel_clk, msm_host->mode->clock * 1000); | |
532 | if (ret) { | |
533 | pr_err("%s: Failed to set rate pixel clk, %d\n", __func__, ret); | |
534 | goto error; | |
535 | } | |
536 | ||
537 | ret = clk_prepare_enable(msm_host->byte_clk); | |
538 | if (ret) { | |
539 | pr_err("%s: Failed to enable dsi byte clk\n", __func__); | |
540 | goto error; | |
541 | } | |
542 | ||
543 | ret = clk_prepare_enable(msm_host->esc_clk); | |
544 | if (ret) { | |
545 | pr_err("%s: Failed to enable dsi esc clk\n", __func__); | |
546 | goto esc_clk_err; | |
547 | } | |
548 | ||
549 | ret = clk_prepare_enable(msm_host->src_clk); | |
550 | if (ret) { | |
551 | pr_err("%s: Failed to enable dsi src clk\n", __func__); | |
552 | goto src_clk_err; | |
553 | } | |
554 | ||
555 | ret = clk_prepare_enable(msm_host->pixel_clk); | |
556 | if (ret) { | |
557 | pr_err("%s: Failed to enable dsi pixel clk\n", __func__); | |
558 | goto pixel_clk_err; | |
559 | } | |
560 | ||
561 | return 0; | |
562 | ||
563 | pixel_clk_err: | |
564 | clk_disable_unprepare(msm_host->src_clk); | |
565 | src_clk_err: | |
a689554b | 566 | clk_disable_unprepare(msm_host->esc_clk); |
4bfa9748 | 567 | esc_clk_err: |
a689554b | 568 | clk_disable_unprepare(msm_host->byte_clk); |
4bfa9748 AT |
569 | error: |
570 | return ret; | |
571 | } | |
572 | ||
573 | static int dsi_link_clk_enable(struct msm_dsi_host *msm_host) | |
574 | { | |
575 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; | |
576 | ||
577 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) | |
578 | return dsi_link_clk_enable_6g(msm_host); | |
579 | else | |
580 | return dsi_link_clk_enable_v2(msm_host); | |
581 | } | |
582 | ||
583 | static void dsi_link_clk_disable(struct msm_dsi_host *msm_host) | |
584 | { | |
585 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; | |
586 | ||
587 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) { | |
588 | clk_disable_unprepare(msm_host->esc_clk); | |
589 | clk_disable_unprepare(msm_host->pixel_clk); | |
590 | clk_disable_unprepare(msm_host->byte_clk); | |
591 | } else { | |
592 | clk_disable_unprepare(msm_host->pixel_clk); | |
593 | clk_disable_unprepare(msm_host->src_clk); | |
594 | clk_disable_unprepare(msm_host->esc_clk); | |
595 | clk_disable_unprepare(msm_host->byte_clk); | |
596 | } | |
a689554b HL |
597 | } |
598 | ||
599 | static int dsi_clk_ctrl(struct msm_dsi_host *msm_host, bool enable) | |
600 | { | |
601 | int ret = 0; | |
602 | ||
603 | mutex_lock(&msm_host->clk_mutex); | |
604 | if (enable) { | |
605 | ret = dsi_bus_clk_enable(msm_host); | |
606 | if (ret) { | |
607 | pr_err("%s: Can not enable bus clk, %d\n", | |
608 | __func__, ret); | |
609 | goto unlock_ret; | |
610 | } | |
611 | ret = dsi_link_clk_enable(msm_host); | |
612 | if (ret) { | |
613 | pr_err("%s: Can not enable link clk, %d\n", | |
614 | __func__, ret); | |
615 | dsi_bus_clk_disable(msm_host); | |
616 | goto unlock_ret; | |
617 | } | |
618 | } else { | |
619 | dsi_link_clk_disable(msm_host); | |
620 | dsi_bus_clk_disable(msm_host); | |
621 | } | |
622 | ||
623 | unlock_ret: | |
624 | mutex_unlock(&msm_host->clk_mutex); | |
625 | return ret; | |
626 | } | |
627 | ||
628 | static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host) | |
629 | { | |
630 | struct drm_display_mode *mode = msm_host->mode; | |
4bfa9748 | 631 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
a689554b HL |
632 | u8 lanes = msm_host->lanes; |
633 | u32 bpp = dsi_get_bpp(msm_host->format); | |
634 | u32 pclk_rate; | |
635 | ||
636 | if (!mode) { | |
637 | pr_err("%s: mode not set\n", __func__); | |
638 | return -EINVAL; | |
639 | } | |
640 | ||
641 | pclk_rate = mode->clock * 1000; | |
642 | if (lanes > 0) { | |
643 | msm_host->byte_clk_rate = (pclk_rate * bpp) / (8 * lanes); | |
644 | } else { | |
645 | pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__); | |
646 | msm_host->byte_clk_rate = (pclk_rate * bpp) / 8; | |
647 | } | |
648 | ||
649 | DBG("pclk=%d, bclk=%d", pclk_rate, msm_host->byte_clk_rate); | |
650 | ||
4bfa9748 AT |
651 | msm_host->esc_clk_rate = clk_get_rate(msm_host->esc_clk); |
652 | ||
653 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_V2) { | |
654 | unsigned int esc_mhz, esc_div; | |
655 | unsigned long byte_mhz; | |
656 | ||
657 | msm_host->src_clk_rate = (pclk_rate * bpp) / 8; | |
658 | ||
659 | /* | |
660 | * esc clock is byte clock followed by a 4 bit divider, | |
661 | * we need to find an escape clock frequency within the | |
662 | * mipi DSI spec range within the maximum divider limit | |
663 | * We iterate here between an escape clock frequencey | |
664 | * between 20 Mhz to 5 Mhz and pick up the first one | |
665 | * that can be supported by our divider | |
666 | */ | |
667 | ||
668 | byte_mhz = msm_host->byte_clk_rate / 1000000; | |
669 | ||
670 | for (esc_mhz = 20; esc_mhz >= 5; esc_mhz--) { | |
671 | esc_div = DIV_ROUND_UP(byte_mhz, esc_mhz); | |
672 | ||
673 | /* | |
674 | * TODO: Ideally, we shouldn't know what sort of divider | |
675 | * is available in mmss_cc, we're just assuming that | |
676 | * it'll always be a 4 bit divider. Need to come up with | |
677 | * a better way here. | |
678 | */ | |
679 | if (esc_div >= 1 && esc_div <= 16) | |
680 | break; | |
681 | } | |
682 | ||
683 | if (esc_mhz < 5) | |
684 | return -EINVAL; | |
685 | ||
686 | msm_host->esc_clk_rate = msm_host->byte_clk_rate / esc_div; | |
687 | ||
688 | DBG("esc=%d, src=%d", msm_host->esc_clk_rate, | |
689 | msm_host->src_clk_rate); | |
690 | } | |
691 | ||
a689554b HL |
692 | return 0; |
693 | } | |
694 | ||
a689554b HL |
695 | static void dsi_intr_ctrl(struct msm_dsi_host *msm_host, u32 mask, int enable) |
696 | { | |
697 | u32 intr; | |
698 | unsigned long flags; | |
699 | ||
700 | spin_lock_irqsave(&msm_host->intr_lock, flags); | |
701 | intr = dsi_read(msm_host, REG_DSI_INTR_CTRL); | |
702 | ||
703 | if (enable) | |
704 | intr |= mask; | |
705 | else | |
706 | intr &= ~mask; | |
707 | ||
708 | DBG("intr=%x enable=%d", intr, enable); | |
709 | ||
710 | dsi_write(msm_host, REG_DSI_INTR_CTRL, intr); | |
711 | spin_unlock_irqrestore(&msm_host->intr_lock, flags); | |
712 | } | |
713 | ||
714 | static inline enum dsi_traffic_mode dsi_get_traffic_mode(const u32 mode_flags) | |
715 | { | |
716 | if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST) | |
717 | return BURST_MODE; | |
718 | else if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) | |
719 | return NON_BURST_SYNCH_PULSE; | |
720 | ||
721 | return NON_BURST_SYNCH_EVENT; | |
722 | } | |
723 | ||
724 | static inline enum dsi_vid_dst_format dsi_get_vid_fmt( | |
725 | const enum mipi_dsi_pixel_format mipi_fmt) | |
726 | { | |
727 | switch (mipi_fmt) { | |
728 | case MIPI_DSI_FMT_RGB888: return VID_DST_FORMAT_RGB888; | |
729 | case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666_LOOSE; | |
730 | case MIPI_DSI_FMT_RGB666_PACKED: return VID_DST_FORMAT_RGB666; | |
731 | case MIPI_DSI_FMT_RGB565: return VID_DST_FORMAT_RGB565; | |
732 | default: return VID_DST_FORMAT_RGB888; | |
733 | } | |
734 | } | |
735 | ||
736 | static inline enum dsi_cmd_dst_format dsi_get_cmd_fmt( | |
737 | const enum mipi_dsi_pixel_format mipi_fmt) | |
738 | { | |
739 | switch (mipi_fmt) { | |
740 | case MIPI_DSI_FMT_RGB888: return CMD_DST_FORMAT_RGB888; | |
741 | case MIPI_DSI_FMT_RGB666_PACKED: | |
742 | case MIPI_DSI_FMT_RGB666: return VID_DST_FORMAT_RGB666; | |
743 | case MIPI_DSI_FMT_RGB565: return CMD_DST_FORMAT_RGB565; | |
744 | default: return CMD_DST_FORMAT_RGB888; | |
745 | } | |
746 | } | |
747 | ||
748 | static void dsi_ctrl_config(struct msm_dsi_host *msm_host, bool enable, | |
dceac340 | 749 | struct msm_dsi_phy_shared_timings *phy_shared_timings) |
a689554b HL |
750 | { |
751 | u32 flags = msm_host->mode_flags; | |
752 | enum mipi_dsi_pixel_format mipi_fmt = msm_host->format; | |
d248b61f | 753 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
a689554b HL |
754 | u32 data = 0; |
755 | ||
756 | if (!enable) { | |
757 | dsi_write(msm_host, REG_DSI_CTRL, 0); | |
758 | return; | |
759 | } | |
760 | ||
761 | if (flags & MIPI_DSI_MODE_VIDEO) { | |
762 | if (flags & MIPI_DSI_MODE_VIDEO_HSE) | |
763 | data |= DSI_VID_CFG0_PULSE_MODE_HSA_HE; | |
764 | if (flags & MIPI_DSI_MODE_VIDEO_HFP) | |
765 | data |= DSI_VID_CFG0_HFP_POWER_STOP; | |
766 | if (flags & MIPI_DSI_MODE_VIDEO_HBP) | |
767 | data |= DSI_VID_CFG0_HBP_POWER_STOP; | |
768 | if (flags & MIPI_DSI_MODE_VIDEO_HSA) | |
769 | data |= DSI_VID_CFG0_HSA_POWER_STOP; | |
770 | /* Always set low power stop mode for BLLP | |
771 | * to let command engine send packets | |
772 | */ | |
773 | data |= DSI_VID_CFG0_EOF_BLLP_POWER_STOP | | |
774 | DSI_VID_CFG0_BLLP_POWER_STOP; | |
775 | data |= DSI_VID_CFG0_TRAFFIC_MODE(dsi_get_traffic_mode(flags)); | |
776 | data |= DSI_VID_CFG0_DST_FORMAT(dsi_get_vid_fmt(mipi_fmt)); | |
777 | data |= DSI_VID_CFG0_VIRT_CHANNEL(msm_host->channel); | |
778 | dsi_write(msm_host, REG_DSI_VID_CFG0, data); | |
779 | ||
780 | /* Do not swap RGB colors */ | |
781 | data = DSI_VID_CFG1_RGB_SWAP(SWAP_RGB); | |
782 | dsi_write(msm_host, REG_DSI_VID_CFG1, 0); | |
783 | } else { | |
784 | /* Do not swap RGB colors */ | |
785 | data = DSI_CMD_CFG0_RGB_SWAP(SWAP_RGB); | |
786 | data |= DSI_CMD_CFG0_DST_FORMAT(dsi_get_cmd_fmt(mipi_fmt)); | |
787 | dsi_write(msm_host, REG_DSI_CMD_CFG0, data); | |
788 | ||
789 | data = DSI_CMD_CFG1_WR_MEM_START(MIPI_DCS_WRITE_MEMORY_START) | | |
790 | DSI_CMD_CFG1_WR_MEM_CONTINUE( | |
791 | MIPI_DCS_WRITE_MEMORY_CONTINUE); | |
792 | /* Always insert DCS command */ | |
793 | data |= DSI_CMD_CFG1_INSERT_DCS_COMMAND; | |
794 | dsi_write(msm_host, REG_DSI_CMD_CFG1, data); | |
795 | } | |
796 | ||
797 | dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, | |
798 | DSI_CMD_DMA_CTRL_FROM_FRAME_BUFFER | | |
799 | DSI_CMD_DMA_CTRL_LOW_POWER); | |
800 | ||
801 | data = 0; | |
802 | /* Always assume dedicated TE pin */ | |
803 | data |= DSI_TRIG_CTRL_TE; | |
804 | data |= DSI_TRIG_CTRL_MDP_TRIGGER(TRIGGER_NONE); | |
805 | data |= DSI_TRIG_CTRL_DMA_TRIGGER(TRIGGER_SW); | |
806 | data |= DSI_TRIG_CTRL_STREAM(msm_host->channel); | |
d248b61f HL |
807 | if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && |
808 | (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_2)) | |
a689554b HL |
809 | data |= DSI_TRIG_CTRL_BLOCK_DMA_WITHIN_FRAME; |
810 | dsi_write(msm_host, REG_DSI_TRIG_CTRL, data); | |
811 | ||
dceac340 HL |
812 | data = DSI_CLKOUT_TIMING_CTRL_T_CLK_POST(phy_shared_timings->clk_post) | |
813 | DSI_CLKOUT_TIMING_CTRL_T_CLK_PRE(phy_shared_timings->clk_pre); | |
a689554b HL |
814 | dsi_write(msm_host, REG_DSI_CLKOUT_TIMING_CTRL, data); |
815 | ||
dceac340 HL |
816 | if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && |
817 | (cfg_hnd->minor > MSM_DSI_6G_VER_MINOR_V1_0) && | |
818 | phy_shared_timings->clk_pre_inc_by_2) | |
819 | dsi_write(msm_host, REG_DSI_T_CLK_PRE_EXTEND, | |
820 | DSI_T_CLK_PRE_EXTEND_INC_BY_2_BYTECLK); | |
821 | ||
a689554b HL |
822 | data = 0; |
823 | if (!(flags & MIPI_DSI_MODE_EOT_PACKET)) | |
824 | data |= DSI_EOT_PACKET_CTRL_TX_EOT_APPEND; | |
825 | dsi_write(msm_host, REG_DSI_EOT_PACKET_CTRL, data); | |
826 | ||
827 | /* allow only ack-err-status to generate interrupt */ | |
828 | dsi_write(msm_host, REG_DSI_ERR_INT_MASK0, 0x13ff3fe0); | |
829 | ||
830 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1); | |
831 | ||
832 | dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); | |
833 | ||
834 | data = DSI_CTRL_CLK_EN; | |
835 | ||
836 | DBG("lane number=%d", msm_host->lanes); | |
26f7d1f4 AT |
837 | data |= ((DSI_CTRL_LANE0 << msm_host->lanes) - DSI_CTRL_LANE0); |
838 | ||
839 | dsi_write(msm_host, REG_DSI_LANE_SWAP_CTRL, | |
840 | DSI_LANE_SWAP_CTRL_DLN_SWAP_SEL(msm_host->dlane_swap)); | |
65c5e542 AT |
841 | |
842 | if (!(flags & MIPI_DSI_CLOCK_NON_CONTINUOUS)) | |
843 | dsi_write(msm_host, REG_DSI_LANE_CTRL, | |
844 | DSI_LANE_CTRL_CLKLN_HS_FORCE_REQUEST); | |
845 | ||
a689554b HL |
846 | data |= DSI_CTRL_ENABLE; |
847 | ||
848 | dsi_write(msm_host, REG_DSI_CTRL, data); | |
849 | } | |
850 | ||
851 | static void dsi_timing_setup(struct msm_dsi_host *msm_host) | |
852 | { | |
853 | struct drm_display_mode *mode = msm_host->mode; | |
854 | u32 hs_start = 0, vs_start = 0; /* take sync start as 0 */ | |
855 | u32 h_total = mode->htotal; | |
856 | u32 v_total = mode->vtotal; | |
857 | u32 hs_end = mode->hsync_end - mode->hsync_start; | |
858 | u32 vs_end = mode->vsync_end - mode->vsync_start; | |
859 | u32 ha_start = h_total - mode->hsync_start; | |
860 | u32 ha_end = ha_start + mode->hdisplay; | |
861 | u32 va_start = v_total - mode->vsync_start; | |
862 | u32 va_end = va_start + mode->vdisplay; | |
863 | u32 wc; | |
864 | ||
865 | DBG(""); | |
866 | ||
867 | if (msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) { | |
868 | dsi_write(msm_host, REG_DSI_ACTIVE_H, | |
869 | DSI_ACTIVE_H_START(ha_start) | | |
870 | DSI_ACTIVE_H_END(ha_end)); | |
871 | dsi_write(msm_host, REG_DSI_ACTIVE_V, | |
872 | DSI_ACTIVE_V_START(va_start) | | |
873 | DSI_ACTIVE_V_END(va_end)); | |
874 | dsi_write(msm_host, REG_DSI_TOTAL, | |
875 | DSI_TOTAL_H_TOTAL(h_total - 1) | | |
876 | DSI_TOTAL_V_TOTAL(v_total - 1)); | |
877 | ||
878 | dsi_write(msm_host, REG_DSI_ACTIVE_HSYNC, | |
879 | DSI_ACTIVE_HSYNC_START(hs_start) | | |
880 | DSI_ACTIVE_HSYNC_END(hs_end)); | |
881 | dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_HPOS, 0); | |
882 | dsi_write(msm_host, REG_DSI_ACTIVE_VSYNC_VPOS, | |
883 | DSI_ACTIVE_VSYNC_VPOS_START(vs_start) | | |
884 | DSI_ACTIVE_VSYNC_VPOS_END(vs_end)); | |
885 | } else { /* command mode */ | |
886 | /* image data and 1 byte write_memory_start cmd */ | |
887 | wc = mode->hdisplay * dsi_get_bpp(msm_host->format) / 8 + 1; | |
888 | ||
889 | dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_CTRL, | |
890 | DSI_CMD_MDP_STREAM_CTRL_WORD_COUNT(wc) | | |
891 | DSI_CMD_MDP_STREAM_CTRL_VIRTUAL_CHANNEL( | |
892 | msm_host->channel) | | |
893 | DSI_CMD_MDP_STREAM_CTRL_DATA_TYPE( | |
894 | MIPI_DSI_DCS_LONG_WRITE)); | |
895 | ||
896 | dsi_write(msm_host, REG_DSI_CMD_MDP_STREAM_TOTAL, | |
897 | DSI_CMD_MDP_STREAM_TOTAL_H_TOTAL(mode->hdisplay) | | |
898 | DSI_CMD_MDP_STREAM_TOTAL_V_TOTAL(mode->vdisplay)); | |
899 | } | |
900 | } | |
901 | ||
902 | static void dsi_sw_reset(struct msm_dsi_host *msm_host) | |
903 | { | |
904 | dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); | |
905 | wmb(); /* clocks need to be enabled before reset */ | |
906 | ||
907 | dsi_write(msm_host, REG_DSI_RESET, 1); | |
908 | wmb(); /* make sure reset happen */ | |
909 | dsi_write(msm_host, REG_DSI_RESET, 0); | |
910 | } | |
911 | ||
912 | static void dsi_op_mode_config(struct msm_dsi_host *msm_host, | |
913 | bool video_mode, bool enable) | |
914 | { | |
915 | u32 dsi_ctrl; | |
916 | ||
917 | dsi_ctrl = dsi_read(msm_host, REG_DSI_CTRL); | |
918 | ||
919 | if (!enable) { | |
920 | dsi_ctrl &= ~(DSI_CTRL_ENABLE | DSI_CTRL_VID_MODE_EN | | |
921 | DSI_CTRL_CMD_MODE_EN); | |
922 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE | | |
923 | DSI_IRQ_MASK_VIDEO_DONE, 0); | |
924 | } else { | |
925 | if (video_mode) { | |
926 | dsi_ctrl |= DSI_CTRL_VID_MODE_EN; | |
927 | } else { /* command mode */ | |
928 | dsi_ctrl |= DSI_CTRL_CMD_MODE_EN; | |
929 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_MDP_DONE, 1); | |
930 | } | |
931 | dsi_ctrl |= DSI_CTRL_ENABLE; | |
932 | } | |
933 | ||
934 | dsi_write(msm_host, REG_DSI_CTRL, dsi_ctrl); | |
935 | } | |
936 | ||
937 | static void dsi_set_tx_power_mode(int mode, struct msm_dsi_host *msm_host) | |
938 | { | |
939 | u32 data; | |
940 | ||
941 | data = dsi_read(msm_host, REG_DSI_CMD_DMA_CTRL); | |
942 | ||
943 | if (mode == 0) | |
944 | data &= ~DSI_CMD_DMA_CTRL_LOW_POWER; | |
945 | else | |
946 | data |= DSI_CMD_DMA_CTRL_LOW_POWER; | |
947 | ||
948 | dsi_write(msm_host, REG_DSI_CMD_DMA_CTRL, data); | |
949 | } | |
950 | ||
951 | static void dsi_wait4video_done(struct msm_dsi_host *msm_host) | |
952 | { | |
953 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 1); | |
954 | ||
955 | reinit_completion(&msm_host->video_comp); | |
956 | ||
957 | wait_for_completion_timeout(&msm_host->video_comp, | |
958 | msecs_to_jiffies(70)); | |
959 | ||
960 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_VIDEO_DONE, 0); | |
961 | } | |
962 | ||
963 | static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host) | |
964 | { | |
965 | if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO)) | |
966 | return; | |
967 | ||
968 | if (msm_host->power_on) { | |
969 | dsi_wait4video_done(msm_host); | |
970 | /* delay 4 ms to skip BLLP */ | |
971 | usleep_range(2000, 4000); | |
972 | } | |
973 | } | |
974 | ||
975 | /* dsi_cmd */ | |
976 | static int dsi_tx_buf_alloc(struct msm_dsi_host *msm_host, int size) | |
977 | { | |
978 | struct drm_device *dev = msm_host->dev; | |
f59f62d5 | 979 | struct msm_drm_private *priv = dev->dev_private; |
4ff9d4cb | 980 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
a689554b | 981 | int ret; |
78babc16 | 982 | uint64_t iova; |
a689554b | 983 | |
4ff9d4cb | 984 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) { |
4ff9d4cb AT |
985 | msm_host->tx_gem_obj = msm_gem_new(dev, size, MSM_BO_UNCACHED); |
986 | if (IS_ERR(msm_host->tx_gem_obj)) { | |
987 | ret = PTR_ERR(msm_host->tx_gem_obj); | |
988 | pr_err("%s: failed to allocate gem, %d\n", | |
989 | __func__, ret); | |
990 | msm_host->tx_gem_obj = NULL; | |
4ff9d4cb AT |
991 | return ret; |
992 | } | |
993 | ||
0e08270a | 994 | ret = msm_gem_get_iova(msm_host->tx_gem_obj, |
8bdcd949 | 995 | priv->kms->aspace, &iova); |
beb107f3 | 996 | mutex_unlock(&dev->struct_mutex); |
4ff9d4cb AT |
997 | if (ret) { |
998 | pr_err("%s: failed to get iova, %d\n", __func__, ret); | |
999 | return ret; | |
1000 | } | |
a689554b | 1001 | |
4ff9d4cb AT |
1002 | if (iova & 0x07) { |
1003 | pr_err("%s: buf NOT 8 bytes aligned\n", __func__); | |
1004 | return -EINVAL; | |
1005 | } | |
a689554b | 1006 | |
4ff9d4cb AT |
1007 | msm_host->tx_size = msm_host->tx_gem_obj->size; |
1008 | } else { | |
1009 | msm_host->tx_buf = dma_alloc_coherent(dev->dev, size, | |
1010 | &msm_host->tx_buf_paddr, GFP_KERNEL); | |
1011 | if (!msm_host->tx_buf) { | |
1012 | ret = -ENOMEM; | |
1013 | pr_err("%s: failed to allocate tx buf, %d\n", | |
1014 | __func__, ret); | |
1015 | return ret; | |
1016 | } | |
1017 | ||
1018 | msm_host->tx_size = size; | |
a689554b HL |
1019 | } |
1020 | ||
1021 | return 0; | |
1022 | } | |
1023 | ||
1024 | static void dsi_tx_buf_free(struct msm_dsi_host *msm_host) | |
1025 | { | |
1026 | struct drm_device *dev = msm_host->dev; | |
1027 | ||
1028 | if (msm_host->tx_gem_obj) { | |
1029 | msm_gem_put_iova(msm_host->tx_gem_obj, 0); | |
1030 | mutex_lock(&dev->struct_mutex); | |
1031 | msm_gem_free_object(msm_host->tx_gem_obj); | |
1032 | msm_host->tx_gem_obj = NULL; | |
1033 | mutex_unlock(&dev->struct_mutex); | |
1034 | } | |
4ff9d4cb AT |
1035 | |
1036 | if (msm_host->tx_buf) | |
1037 | dma_free_coherent(dev->dev, msm_host->tx_size, msm_host->tx_buf, | |
1038 | msm_host->tx_buf_paddr); | |
a689554b HL |
1039 | } |
1040 | ||
1041 | /* | |
1042 | * prepare cmd buffer to be txed | |
1043 | */ | |
4ff9d4cb AT |
1044 | static int dsi_cmd_dma_add(struct msm_dsi_host *msm_host, |
1045 | const struct mipi_dsi_msg *msg) | |
a689554b | 1046 | { |
4ff9d4cb | 1047 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
a689554b HL |
1048 | struct mipi_dsi_packet packet; |
1049 | int len; | |
1050 | int ret; | |
1051 | u8 *data; | |
1052 | ||
1053 | ret = mipi_dsi_create_packet(&packet, msg); | |
1054 | if (ret) { | |
1055 | pr_err("%s: create packet failed, %d\n", __func__, ret); | |
1056 | return ret; | |
1057 | } | |
1058 | len = (packet.size + 3) & (~0x3); | |
1059 | ||
4ff9d4cb | 1060 | if (len > msm_host->tx_size) { |
a689554b HL |
1061 | pr_err("%s: packet size is too big\n", __func__); |
1062 | return -EINVAL; | |
1063 | } | |
1064 | ||
4ff9d4cb | 1065 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) { |
18f23049 | 1066 | data = msm_gem_get_vaddr(msm_host->tx_gem_obj); |
4ff9d4cb AT |
1067 | if (IS_ERR(data)) { |
1068 | ret = PTR_ERR(data); | |
1069 | pr_err("%s: get vaddr failed, %d\n", __func__, ret); | |
1070 | return ret; | |
1071 | } | |
1072 | } else { | |
1073 | data = msm_host->tx_buf; | |
a689554b HL |
1074 | } |
1075 | ||
1076 | /* MSM specific command format in memory */ | |
1077 | data[0] = packet.header[1]; | |
1078 | data[1] = packet.header[2]; | |
1079 | data[2] = packet.header[0]; | |
1080 | data[3] = BIT(7); /* Last packet */ | |
1081 | if (mipi_dsi_packet_format_is_long(msg->type)) | |
1082 | data[3] |= BIT(6); | |
1083 | if (msg->rx_buf && msg->rx_len) | |
1084 | data[3] |= BIT(5); | |
1085 | ||
1086 | /* Long packet */ | |
1087 | if (packet.payload && packet.payload_length) | |
1088 | memcpy(data + 4, packet.payload, packet.payload_length); | |
1089 | ||
1090 | /* Append 0xff to the end */ | |
1091 | if (packet.size < len) | |
1092 | memset(data + packet.size, 0xff, len - packet.size); | |
1093 | ||
18f23049 RC |
1094 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) |
1095 | msm_gem_put_vaddr(msm_host->tx_gem_obj); | |
1096 | ||
a689554b HL |
1097 | return len; |
1098 | } | |
1099 | ||
1100 | /* | |
1101 | * dsi_short_read1_resp: 1 parameter | |
1102 | */ | |
1103 | static int dsi_short_read1_resp(u8 *buf, const struct mipi_dsi_msg *msg) | |
1104 | { | |
1105 | u8 *data = msg->rx_buf; | |
1106 | if (data && (msg->rx_len >= 1)) { | |
1107 | *data = buf[1]; /* strip out dcs type */ | |
1108 | return 1; | |
1109 | } else { | |
981371f3 | 1110 | pr_err("%s: read data does not match with rx_buf len %zu\n", |
a689554b HL |
1111 | __func__, msg->rx_len); |
1112 | return -EINVAL; | |
1113 | } | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * dsi_short_read2_resp: 2 parameter | |
1118 | */ | |
1119 | static int dsi_short_read2_resp(u8 *buf, const struct mipi_dsi_msg *msg) | |
1120 | { | |
1121 | u8 *data = msg->rx_buf; | |
1122 | if (data && (msg->rx_len >= 2)) { | |
1123 | data[0] = buf[1]; /* strip out dcs type */ | |
1124 | data[1] = buf[2]; | |
1125 | return 2; | |
1126 | } else { | |
981371f3 | 1127 | pr_err("%s: read data does not match with rx_buf len %zu\n", |
a689554b HL |
1128 | __func__, msg->rx_len); |
1129 | return -EINVAL; | |
1130 | } | |
1131 | } | |
1132 | ||
1133 | static int dsi_long_read_resp(u8 *buf, const struct mipi_dsi_msg *msg) | |
1134 | { | |
1135 | /* strip out 4 byte dcs header */ | |
1136 | if (msg->rx_buf && msg->rx_len) | |
1137 | memcpy(msg->rx_buf, buf + 4, msg->rx_len); | |
1138 | ||
1139 | return msg->rx_len; | |
1140 | } | |
1141 | ||
a689554b HL |
1142 | static int dsi_cmd_dma_tx(struct msm_dsi_host *msm_host, int len) |
1143 | { | |
4ff9d4cb | 1144 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
f59f62d5 RC |
1145 | struct drm_device *dev = msm_host->dev; |
1146 | struct msm_drm_private *priv = dev->dev_private; | |
a689554b | 1147 | int ret; |
78babc16 | 1148 | uint64_t dma_base; |
a689554b HL |
1149 | bool triggered; |
1150 | ||
4ff9d4cb | 1151 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) { |
f59f62d5 | 1152 | ret = msm_gem_get_iova(msm_host->tx_gem_obj, |
8bdcd949 | 1153 | priv->kms->aspace, &dma_base); |
4ff9d4cb AT |
1154 | if (ret) { |
1155 | pr_err("%s: failed to get iova: %d\n", __func__, ret); | |
1156 | return ret; | |
1157 | } | |
1158 | } else { | |
1159 | dma_base = msm_host->tx_buf_paddr; | |
a689554b HL |
1160 | } |
1161 | ||
1162 | reinit_completion(&msm_host->dma_comp); | |
1163 | ||
1164 | dsi_wait4video_eng_busy(msm_host); | |
1165 | ||
1166 | triggered = msm_dsi_manager_cmd_xfer_trigger( | |
4ff9d4cb | 1167 | msm_host->id, dma_base, len); |
a689554b HL |
1168 | if (triggered) { |
1169 | ret = wait_for_completion_timeout(&msm_host->dma_comp, | |
1170 | msecs_to_jiffies(200)); | |
1171 | DBG("ret=%d", ret); | |
1172 | if (ret == 0) | |
1173 | ret = -ETIMEDOUT; | |
1174 | else | |
1175 | ret = len; | |
1176 | } else | |
1177 | ret = len; | |
1178 | ||
1179 | return ret; | |
1180 | } | |
1181 | ||
1182 | static int dsi_cmd_dma_rx(struct msm_dsi_host *msm_host, | |
1183 | u8 *buf, int rx_byte, int pkt_size) | |
1184 | { | |
1185 | u32 *lp, *temp, data; | |
1186 | int i, j = 0, cnt; | |
a689554b HL |
1187 | u32 read_cnt; |
1188 | u8 reg[16]; | |
1189 | int repeated_bytes = 0; | |
1190 | int buf_offset = buf - msm_host->rx_buf; | |
1191 | ||
1192 | lp = (u32 *)buf; | |
1193 | temp = (u32 *)reg; | |
1194 | cnt = (rx_byte + 3) >> 2; | |
1195 | if (cnt > 4) | |
1196 | cnt = 4; /* 4 x 32 bits registers only */ | |
1197 | ||
ec1936eb HL |
1198 | if (rx_byte == 4) |
1199 | read_cnt = 4; | |
1200 | else | |
1201 | read_cnt = pkt_size + 6; | |
a689554b HL |
1202 | |
1203 | /* | |
1204 | * In case of multiple reads from the panel, after the first read, there | |
1205 | * is possibility that there are some bytes in the payload repeating in | |
1206 | * the RDBK_DATA registers. Since we read all the parameters from the | |
1207 | * panel right from the first byte for every pass. We need to skip the | |
1208 | * repeating bytes and then append the new parameters to the rx buffer. | |
1209 | */ | |
1210 | if (read_cnt > 16) { | |
1211 | int bytes_shifted; | |
1212 | /* Any data more than 16 bytes will be shifted out. | |
1213 | * The temp read buffer should already contain these bytes. | |
1214 | * The remaining bytes in read buffer are the repeated bytes. | |
1215 | */ | |
1216 | bytes_shifted = read_cnt - 16; | |
1217 | repeated_bytes = buf_offset - bytes_shifted; | |
1218 | } | |
1219 | ||
1220 | for (i = cnt - 1; i >= 0; i--) { | |
1221 | data = dsi_read(msm_host, REG_DSI_RDBK_DATA(i)); | |
1222 | *temp++ = ntohl(data); /* to host byte order */ | |
1223 | DBG("data = 0x%x and ntohl(data) = 0x%x", data, ntohl(data)); | |
1224 | } | |
1225 | ||
1226 | for (i = repeated_bytes; i < 16; i++) | |
1227 | buf[j++] = reg[i]; | |
1228 | ||
1229 | return j; | |
1230 | } | |
1231 | ||
1232 | static int dsi_cmds2buf_tx(struct msm_dsi_host *msm_host, | |
1233 | const struct mipi_dsi_msg *msg) | |
1234 | { | |
1235 | int len, ret; | |
1236 | int bllp_len = msm_host->mode->hdisplay * | |
1237 | dsi_get_bpp(msm_host->format) / 8; | |
1238 | ||
4ff9d4cb | 1239 | len = dsi_cmd_dma_add(msm_host, msg); |
a689554b HL |
1240 | if (!len) { |
1241 | pr_err("%s: failed to add cmd type = 0x%x\n", | |
1242 | __func__, msg->type); | |
1243 | return -EINVAL; | |
1244 | } | |
1245 | ||
1246 | /* for video mode, do not send cmds more than | |
1247 | * one pixel line, since it only transmit it | |
1248 | * during BLLP. | |
1249 | */ | |
1250 | /* TODO: if the command is sent in LP mode, the bit rate is only | |
1251 | * half of esc clk rate. In this case, if the video is already | |
1252 | * actively streaming, we need to check more carefully if the | |
1253 | * command can be fit into one BLLP. | |
1254 | */ | |
1255 | if ((msm_host->mode_flags & MIPI_DSI_MODE_VIDEO) && (len > bllp_len)) { | |
1256 | pr_err("%s: cmd cannot fit into BLLP period, len=%d\n", | |
1257 | __func__, len); | |
1258 | return -EINVAL; | |
1259 | } | |
1260 | ||
1261 | ret = dsi_cmd_dma_tx(msm_host, len); | |
1262 | if (ret < len) { | |
1263 | pr_err("%s: cmd dma tx failed, type=0x%x, data0=0x%x, len=%d\n", | |
1264 | __func__, msg->type, (*(u8 *)(msg->tx_buf)), len); | |
1265 | return -ECOMM; | |
1266 | } | |
1267 | ||
1268 | return len; | |
1269 | } | |
1270 | ||
1271 | static void dsi_sw_reset_restore(struct msm_dsi_host *msm_host) | |
1272 | { | |
1273 | u32 data0, data1; | |
1274 | ||
1275 | data0 = dsi_read(msm_host, REG_DSI_CTRL); | |
1276 | data1 = data0; | |
1277 | data1 &= ~DSI_CTRL_ENABLE; | |
1278 | dsi_write(msm_host, REG_DSI_CTRL, data1); | |
1279 | /* | |
1280 | * dsi controller need to be disabled before | |
1281 | * clocks turned on | |
1282 | */ | |
1283 | wmb(); | |
1284 | ||
1285 | dsi_write(msm_host, REG_DSI_CLK_CTRL, DSI_CLK_CTRL_ENABLE_CLKS); | |
1286 | wmb(); /* make sure clocks enabled */ | |
1287 | ||
1288 | /* dsi controller can only be reset while clocks are running */ | |
1289 | dsi_write(msm_host, REG_DSI_RESET, 1); | |
1290 | wmb(); /* make sure reset happen */ | |
1291 | dsi_write(msm_host, REG_DSI_RESET, 0); | |
1292 | wmb(); /* controller out of reset */ | |
1293 | dsi_write(msm_host, REG_DSI_CTRL, data0); | |
1294 | wmb(); /* make sure dsi controller enabled again */ | |
1295 | } | |
1296 | ||
8d23ea40 AT |
1297 | static void dsi_hpd_worker(struct work_struct *work) |
1298 | { | |
1299 | struct msm_dsi_host *msm_host = | |
1300 | container_of(work, struct msm_dsi_host, hpd_work); | |
1301 | ||
1302 | drm_helper_hpd_irq_event(msm_host->dev); | |
1303 | } | |
1304 | ||
a689554b HL |
1305 | static void dsi_err_worker(struct work_struct *work) |
1306 | { | |
1307 | struct msm_dsi_host *msm_host = | |
1308 | container_of(work, struct msm_dsi_host, err_work); | |
1309 | u32 status = msm_host->err_work_state; | |
1310 | ||
ff431fa4 | 1311 | pr_err_ratelimited("%s: status=%x\n", __func__, status); |
a689554b HL |
1312 | if (status & DSI_ERR_STATE_MDP_FIFO_UNDERFLOW) |
1313 | dsi_sw_reset_restore(msm_host); | |
1314 | ||
1315 | /* It is safe to clear here because error irq is disabled. */ | |
1316 | msm_host->err_work_state = 0; | |
1317 | ||
1318 | /* enable dsi error interrupt */ | |
1319 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 1); | |
1320 | } | |
1321 | ||
1322 | static void dsi_ack_err_status(struct msm_dsi_host *msm_host) | |
1323 | { | |
1324 | u32 status; | |
1325 | ||
1326 | status = dsi_read(msm_host, REG_DSI_ACK_ERR_STATUS); | |
1327 | ||
1328 | if (status) { | |
1329 | dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, status); | |
1330 | /* Writing of an extra 0 needed to clear error bits */ | |
1331 | dsi_write(msm_host, REG_DSI_ACK_ERR_STATUS, 0); | |
1332 | msm_host->err_work_state |= DSI_ERR_STATE_ACK; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | static void dsi_timeout_status(struct msm_dsi_host *msm_host) | |
1337 | { | |
1338 | u32 status; | |
1339 | ||
1340 | status = dsi_read(msm_host, REG_DSI_TIMEOUT_STATUS); | |
1341 | ||
1342 | if (status) { | |
1343 | dsi_write(msm_host, REG_DSI_TIMEOUT_STATUS, status); | |
1344 | msm_host->err_work_state |= DSI_ERR_STATE_TIMEOUT; | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | static void dsi_dln0_phy_err(struct msm_dsi_host *msm_host) | |
1349 | { | |
1350 | u32 status; | |
1351 | ||
1352 | status = dsi_read(msm_host, REG_DSI_DLN0_PHY_ERR); | |
1353 | ||
01199361 AT |
1354 | if (status & (DSI_DLN0_PHY_ERR_DLN0_ERR_ESC | |
1355 | DSI_DLN0_PHY_ERR_DLN0_ERR_SYNC_ESC | | |
1356 | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTROL | | |
1357 | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP0 | | |
1358 | DSI_DLN0_PHY_ERR_DLN0_ERR_CONTENTION_LP1)) { | |
a689554b HL |
1359 | dsi_write(msm_host, REG_DSI_DLN0_PHY_ERR, status); |
1360 | msm_host->err_work_state |= DSI_ERR_STATE_DLN0_PHY; | |
1361 | } | |
1362 | } | |
1363 | ||
1364 | static void dsi_fifo_status(struct msm_dsi_host *msm_host) | |
1365 | { | |
1366 | u32 status; | |
1367 | ||
1368 | status = dsi_read(msm_host, REG_DSI_FIFO_STATUS); | |
1369 | ||
1370 | /* fifo underflow, overflow */ | |
1371 | if (status) { | |
1372 | dsi_write(msm_host, REG_DSI_FIFO_STATUS, status); | |
1373 | msm_host->err_work_state |= DSI_ERR_STATE_FIFO; | |
1374 | if (status & DSI_FIFO_STATUS_CMD_MDP_FIFO_UNDERFLOW) | |
1375 | msm_host->err_work_state |= | |
1376 | DSI_ERR_STATE_MDP_FIFO_UNDERFLOW; | |
1377 | } | |
1378 | } | |
1379 | ||
1380 | static void dsi_status(struct msm_dsi_host *msm_host) | |
1381 | { | |
1382 | u32 status; | |
1383 | ||
1384 | status = dsi_read(msm_host, REG_DSI_STATUS0); | |
1385 | ||
1386 | if (status & DSI_STATUS0_INTERLEAVE_OP_CONTENTION) { | |
1387 | dsi_write(msm_host, REG_DSI_STATUS0, status); | |
1388 | msm_host->err_work_state |= | |
1389 | DSI_ERR_STATE_INTERLEAVE_OP_CONTENTION; | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | static void dsi_clk_status(struct msm_dsi_host *msm_host) | |
1394 | { | |
1395 | u32 status; | |
1396 | ||
1397 | status = dsi_read(msm_host, REG_DSI_CLK_STATUS); | |
1398 | ||
1399 | if (status & DSI_CLK_STATUS_PLL_UNLOCKED) { | |
1400 | dsi_write(msm_host, REG_DSI_CLK_STATUS, status); | |
1401 | msm_host->err_work_state |= DSI_ERR_STATE_PLL_UNLOCKED; | |
1402 | } | |
1403 | } | |
1404 | ||
1405 | static void dsi_error(struct msm_dsi_host *msm_host) | |
1406 | { | |
1407 | /* disable dsi error interrupt */ | |
1408 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_ERROR, 0); | |
1409 | ||
1410 | dsi_clk_status(msm_host); | |
1411 | dsi_fifo_status(msm_host); | |
1412 | dsi_ack_err_status(msm_host); | |
1413 | dsi_timeout_status(msm_host); | |
1414 | dsi_status(msm_host); | |
1415 | dsi_dln0_phy_err(msm_host); | |
1416 | ||
1417 | queue_work(msm_host->workqueue, &msm_host->err_work); | |
1418 | } | |
1419 | ||
1420 | static irqreturn_t dsi_host_irq(int irq, void *ptr) | |
1421 | { | |
1422 | struct msm_dsi_host *msm_host = ptr; | |
1423 | u32 isr; | |
1424 | unsigned long flags; | |
1425 | ||
1426 | if (!msm_host->ctrl_base) | |
1427 | return IRQ_HANDLED; | |
1428 | ||
1429 | spin_lock_irqsave(&msm_host->intr_lock, flags); | |
1430 | isr = dsi_read(msm_host, REG_DSI_INTR_CTRL); | |
1431 | dsi_write(msm_host, REG_DSI_INTR_CTRL, isr); | |
1432 | spin_unlock_irqrestore(&msm_host->intr_lock, flags); | |
1433 | ||
1434 | DBG("isr=0x%x, id=%d", isr, msm_host->id); | |
1435 | ||
1436 | if (isr & DSI_IRQ_ERROR) | |
1437 | dsi_error(msm_host); | |
1438 | ||
1439 | if (isr & DSI_IRQ_VIDEO_DONE) | |
1440 | complete(&msm_host->video_comp); | |
1441 | ||
1442 | if (isr & DSI_IRQ_CMD_DMA_DONE) | |
1443 | complete(&msm_host->dma_comp); | |
1444 | ||
1445 | return IRQ_HANDLED; | |
1446 | } | |
1447 | ||
1448 | static int dsi_host_init_panel_gpios(struct msm_dsi_host *msm_host, | |
1449 | struct device *panel_device) | |
1450 | { | |
9590e69d UKK |
1451 | msm_host->disp_en_gpio = devm_gpiod_get_optional(panel_device, |
1452 | "disp-enable", | |
1453 | GPIOD_OUT_LOW); | |
a689554b HL |
1454 | if (IS_ERR(msm_host->disp_en_gpio)) { |
1455 | DBG("cannot get disp-enable-gpios %ld", | |
1456 | PTR_ERR(msm_host->disp_en_gpio)); | |
9590e69d | 1457 | return PTR_ERR(msm_host->disp_en_gpio); |
a689554b HL |
1458 | } |
1459 | ||
60d05cb4 AT |
1460 | msm_host->te_gpio = devm_gpiod_get_optional(panel_device, "disp-te", |
1461 | GPIOD_IN); | |
a689554b HL |
1462 | if (IS_ERR(msm_host->te_gpio)) { |
1463 | DBG("cannot get disp-te-gpios %ld", PTR_ERR(msm_host->te_gpio)); | |
9590e69d | 1464 | return PTR_ERR(msm_host->te_gpio); |
a689554b HL |
1465 | } |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | ||
1470 | static int dsi_host_attach(struct mipi_dsi_host *host, | |
1471 | struct mipi_dsi_device *dsi) | |
1472 | { | |
1473 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1474 | int ret; | |
1475 | ||
26f7d1f4 AT |
1476 | if (dsi->lanes > msm_host->num_data_lanes) |
1477 | return -EINVAL; | |
1478 | ||
a689554b HL |
1479 | msm_host->channel = dsi->channel; |
1480 | msm_host->lanes = dsi->lanes; | |
1481 | msm_host->format = dsi->format; | |
1482 | msm_host->mode_flags = dsi->mode_flags; | |
1483 | ||
9c9f6f8d AT |
1484 | msm_dsi_manager_attach_dsi_device(msm_host->id, dsi->mode_flags); |
1485 | ||
a689554b HL |
1486 | /* Some gpios defined in panel DT need to be controlled by host */ |
1487 | ret = dsi_host_init_panel_gpios(msm_host, &dsi->dev); | |
1488 | if (ret) | |
1489 | return ret; | |
1490 | ||
1491 | DBG("id=%d", msm_host->id); | |
1492 | if (msm_host->dev) | |
8d23ea40 | 1493 | queue_work(msm_host->workqueue, &msm_host->hpd_work); |
a689554b HL |
1494 | |
1495 | return 0; | |
1496 | } | |
1497 | ||
1498 | static int dsi_host_detach(struct mipi_dsi_host *host, | |
1499 | struct mipi_dsi_device *dsi) | |
1500 | { | |
1501 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1502 | ||
a9ddac9c | 1503 | msm_host->device_node = NULL; |
a689554b HL |
1504 | |
1505 | DBG("id=%d", msm_host->id); | |
1506 | if (msm_host->dev) | |
8d23ea40 | 1507 | queue_work(msm_host->workqueue, &msm_host->hpd_work); |
a689554b HL |
1508 | |
1509 | return 0; | |
1510 | } | |
1511 | ||
1512 | static ssize_t dsi_host_transfer(struct mipi_dsi_host *host, | |
1513 | const struct mipi_dsi_msg *msg) | |
1514 | { | |
1515 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1516 | int ret; | |
1517 | ||
1518 | if (!msg || !msm_host->power_on) | |
1519 | return -EINVAL; | |
1520 | ||
1521 | mutex_lock(&msm_host->cmd_mutex); | |
1522 | ret = msm_dsi_manager_cmd_xfer(msm_host->id, msg); | |
1523 | mutex_unlock(&msm_host->cmd_mutex); | |
1524 | ||
1525 | return ret; | |
1526 | } | |
1527 | ||
1528 | static struct mipi_dsi_host_ops dsi_host_ops = { | |
1529 | .attach = dsi_host_attach, | |
1530 | .detach = dsi_host_detach, | |
1531 | .transfer = dsi_host_transfer, | |
1532 | }; | |
1533 | ||
26f7d1f4 AT |
1534 | /* |
1535 | * List of supported physical to logical lane mappings. | |
1536 | * For example, the 2nd entry represents the following mapping: | |
1537 | * | |
1538 | * "3012": Logic 3->Phys 0; Logic 0->Phys 1; Logic 1->Phys 2; Logic 2->Phys 3; | |
1539 | */ | |
1540 | static const int supported_data_lane_swaps[][4] = { | |
1541 | { 0, 1, 2, 3 }, | |
1542 | { 3, 0, 1, 2 }, | |
1543 | { 2, 3, 0, 1 }, | |
1544 | { 1, 2, 3, 0 }, | |
1545 | { 0, 3, 2, 1 }, | |
1546 | { 1, 0, 3, 2 }, | |
1547 | { 2, 1, 0, 3 }, | |
1548 | { 3, 2, 1, 0 }, | |
1549 | }; | |
1550 | ||
1551 | static int dsi_host_parse_lane_data(struct msm_dsi_host *msm_host, | |
1552 | struct device_node *ep) | |
1553 | { | |
1554 | struct device *dev = &msm_host->pdev->dev; | |
1555 | struct property *prop; | |
1556 | u32 lane_map[4]; | |
1557 | int ret, i, len, num_lanes; | |
1558 | ||
60282cea | 1559 | prop = of_find_property(ep, "data-lanes", &len); |
26f7d1f4 | 1560 | if (!prop) { |
a1b1a4f7 AT |
1561 | dev_dbg(dev, |
1562 | "failed to find data lane mapping, using default\n"); | |
1563 | return 0; | |
26f7d1f4 AT |
1564 | } |
1565 | ||
1566 | num_lanes = len / sizeof(u32); | |
1567 | ||
1568 | if (num_lanes < 1 || num_lanes > 4) { | |
1569 | dev_err(dev, "bad number of data lanes\n"); | |
1570 | return -EINVAL; | |
1571 | } | |
1572 | ||
1573 | msm_host->num_data_lanes = num_lanes; | |
1574 | ||
60282cea | 1575 | ret = of_property_read_u32_array(ep, "data-lanes", lane_map, |
26f7d1f4 AT |
1576 | num_lanes); |
1577 | if (ret) { | |
1578 | dev_err(dev, "failed to read lane data\n"); | |
1579 | return ret; | |
1580 | } | |
1581 | ||
1582 | /* | |
1583 | * compare DT specified physical-logical lane mappings with the ones | |
1584 | * supported by hardware | |
1585 | */ | |
1586 | for (i = 0; i < ARRAY_SIZE(supported_data_lane_swaps); i++) { | |
1587 | const int *swap = supported_data_lane_swaps[i]; | |
1588 | int j; | |
1589 | ||
60282cea AT |
1590 | /* |
1591 | * the data-lanes array we get from DT has a logical->physical | |
1592 | * mapping. The "data lane swap" register field represents | |
1593 | * supported configurations in a physical->logical mapping. | |
1594 | * Translate the DT mapping to what we understand and find a | |
1595 | * configuration that works. | |
1596 | */ | |
26f7d1f4 | 1597 | for (j = 0; j < num_lanes; j++) { |
60282cea AT |
1598 | if (lane_map[j] < 0 || lane_map[j] > 3) |
1599 | dev_err(dev, "bad physical lane entry %u\n", | |
1600 | lane_map[j]); | |
1601 | ||
1602 | if (swap[lane_map[j]] != j) | |
26f7d1f4 AT |
1603 | break; |
1604 | } | |
1605 | ||
1606 | if (j == num_lanes) { | |
1607 | msm_host->dlane_swap = i; | |
1608 | return 0; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | return -EINVAL; | |
1613 | } | |
1614 | ||
f7009d26 AT |
1615 | static int dsi_host_parse_dt(struct msm_dsi_host *msm_host) |
1616 | { | |
1617 | struct device *dev = &msm_host->pdev->dev; | |
1618 | struct device_node *np = dev->of_node; | |
a9ddac9c | 1619 | struct device_node *endpoint, *device_node; |
a1b1a4f7 | 1620 | int ret = 0; |
f7009d26 | 1621 | |
f7009d26 | 1622 | /* |
b9ac76f6 AT |
1623 | * Get the endpoint of the output port of the DSI host. In our case, |
1624 | * this is mapped to port number with reg = 1. Don't return an error if | |
1625 | * the remote endpoint isn't defined. It's possible that there is | |
1626 | * nothing connected to the dsi output. | |
f7009d26 | 1627 | */ |
b9ac76f6 | 1628 | endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); |
f7009d26 AT |
1629 | if (!endpoint) { |
1630 | dev_dbg(dev, "%s: no endpoint\n", __func__); | |
1631 | return 0; | |
1632 | } | |
1633 | ||
26f7d1f4 AT |
1634 | ret = dsi_host_parse_lane_data(msm_host, endpoint); |
1635 | if (ret) { | |
1636 | dev_err(dev, "%s: invalid lane configuration %d\n", | |
1637 | __func__, ret); | |
1638 | goto err; | |
1639 | } | |
1640 | ||
f7009d26 | 1641 | /* Get panel node from the output port's endpoint data */ |
86418f90 | 1642 | device_node = of_graph_get_remote_node(np, 1, 0); |
a9ddac9c | 1643 | if (!device_node) { |
a1b1a4f7 | 1644 | dev_dbg(dev, "%s: no valid device\n", __func__); |
26f7d1f4 | 1645 | goto err; |
f7009d26 AT |
1646 | } |
1647 | ||
a9ddac9c | 1648 | msm_host->device_node = device_node; |
f7009d26 | 1649 | |
0c7df47f AT |
1650 | if (of_property_read_bool(np, "syscon-sfpb")) { |
1651 | msm_host->sfpb = syscon_regmap_lookup_by_phandle(np, | |
1652 | "syscon-sfpb"); | |
1653 | if (IS_ERR(msm_host->sfpb)) { | |
1654 | dev_err(dev, "%s: failed to get sfpb regmap\n", | |
1655 | __func__); | |
26f7d1f4 | 1656 | ret = PTR_ERR(msm_host->sfpb); |
0c7df47f AT |
1657 | } |
1658 | } | |
1659 | ||
26f7d1f4 AT |
1660 | of_node_put(device_node); |
1661 | ||
1662 | err: | |
1663 | of_node_put(endpoint); | |
1664 | ||
1665 | return ret; | |
f7009d26 AT |
1666 | } |
1667 | ||
32280d66 AT |
1668 | static int dsi_host_get_id(struct msm_dsi_host *msm_host) |
1669 | { | |
1670 | struct platform_device *pdev = msm_host->pdev; | |
1671 | const struct msm_dsi_config *cfg = msm_host->cfg_hnd->cfg; | |
1672 | struct resource *res; | |
1673 | int i; | |
1674 | ||
1675 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dsi_ctrl"); | |
1676 | if (!res) | |
1677 | return -EINVAL; | |
1678 | ||
1679 | for (i = 0; i < cfg->num_dsi; i++) { | |
1680 | if (cfg->io_start[i] == res->start) | |
1681 | return i; | |
1682 | } | |
1683 | ||
1684 | return -EINVAL; | |
1685 | } | |
1686 | ||
a689554b HL |
1687 | int msm_dsi_host_init(struct msm_dsi *msm_dsi) |
1688 | { | |
1689 | struct msm_dsi_host *msm_host = NULL; | |
1690 | struct platform_device *pdev = msm_dsi->pdev; | |
1691 | int ret; | |
1692 | ||
1693 | msm_host = devm_kzalloc(&pdev->dev, sizeof(*msm_host), GFP_KERNEL); | |
1694 | if (!msm_host) { | |
1695 | pr_err("%s: FAILED: cannot alloc dsi host\n", | |
1696 | __func__); | |
1697 | ret = -ENOMEM; | |
1698 | goto fail; | |
1699 | } | |
1700 | ||
f7009d26 AT |
1701 | msm_host->pdev = pdev; |
1702 | ||
1703 | ret = dsi_host_parse_dt(msm_host); | |
a689554b | 1704 | if (ret) { |
f7009d26 | 1705 | pr_err("%s: failed to parse dt\n", __func__); |
a689554b HL |
1706 | goto fail; |
1707 | } | |
a689554b | 1708 | |
a689554b HL |
1709 | msm_host->ctrl_base = msm_ioremap(pdev, "dsi_ctrl", "DSI CTRL"); |
1710 | if (IS_ERR(msm_host->ctrl_base)) { | |
1711 | pr_err("%s: unable to map Dsi ctrl base\n", __func__); | |
1712 | ret = PTR_ERR(msm_host->ctrl_base); | |
1713 | goto fail; | |
1714 | } | |
1715 | ||
d248b61f HL |
1716 | msm_host->cfg_hnd = dsi_get_config(msm_host); |
1717 | if (!msm_host->cfg_hnd) { | |
a689554b HL |
1718 | ret = -EINVAL; |
1719 | pr_err("%s: get config failed\n", __func__); | |
1720 | goto fail; | |
1721 | } | |
1722 | ||
32280d66 AT |
1723 | msm_host->id = dsi_host_get_id(msm_host); |
1724 | if (msm_host->id < 0) { | |
1725 | ret = msm_host->id; | |
1726 | pr_err("%s: unable to identify DSI host index\n", __func__); | |
1727 | goto fail; | |
1728 | } | |
1729 | ||
d248b61f HL |
1730 | /* fixup base address by io offset */ |
1731 | msm_host->ctrl_base += msm_host->cfg_hnd->cfg->io_offset; | |
1732 | ||
a689554b HL |
1733 | ret = dsi_regulator_init(msm_host); |
1734 | if (ret) { | |
1735 | pr_err("%s: regulator init failed\n", __func__); | |
1736 | goto fail; | |
1737 | } | |
1738 | ||
31c92767 AT |
1739 | ret = dsi_clk_init(msm_host); |
1740 | if (ret) { | |
1741 | pr_err("%s: unable to initialize dsi clks\n", __func__); | |
1742 | goto fail; | |
1743 | } | |
1744 | ||
a689554b HL |
1745 | msm_host->rx_buf = devm_kzalloc(&pdev->dev, SZ_4K, GFP_KERNEL); |
1746 | if (!msm_host->rx_buf) { | |
cd57b48a | 1747 | ret = -ENOMEM; |
a689554b HL |
1748 | pr_err("%s: alloc rx temp buf failed\n", __func__); |
1749 | goto fail; | |
1750 | } | |
1751 | ||
1752 | init_completion(&msm_host->dma_comp); | |
1753 | init_completion(&msm_host->video_comp); | |
1754 | mutex_init(&msm_host->dev_mutex); | |
1755 | mutex_init(&msm_host->cmd_mutex); | |
1756 | mutex_init(&msm_host->clk_mutex); | |
1757 | spin_lock_init(&msm_host->intr_lock); | |
1758 | ||
1759 | /* setup workqueue */ | |
1760 | msm_host->workqueue = alloc_ordered_workqueue("dsi_drm_work", 0); | |
1761 | INIT_WORK(&msm_host->err_work, dsi_err_worker); | |
8d23ea40 | 1762 | INIT_WORK(&msm_host->hpd_work, dsi_hpd_worker); |
a689554b | 1763 | |
a689554b HL |
1764 | msm_dsi->host = &msm_host->base; |
1765 | msm_dsi->id = msm_host->id; | |
1766 | ||
1767 | DBG("Dsi Host %d initialized", msm_host->id); | |
1768 | return 0; | |
1769 | ||
1770 | fail: | |
1771 | return ret; | |
1772 | } | |
1773 | ||
1774 | void msm_dsi_host_destroy(struct mipi_dsi_host *host) | |
1775 | { | |
1776 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1777 | ||
1778 | DBG(""); | |
1779 | dsi_tx_buf_free(msm_host); | |
1780 | if (msm_host->workqueue) { | |
1781 | flush_workqueue(msm_host->workqueue); | |
1782 | destroy_workqueue(msm_host->workqueue); | |
1783 | msm_host->workqueue = NULL; | |
1784 | } | |
1785 | ||
1786 | mutex_destroy(&msm_host->clk_mutex); | |
1787 | mutex_destroy(&msm_host->cmd_mutex); | |
1788 | mutex_destroy(&msm_host->dev_mutex); | |
1789 | } | |
1790 | ||
1791 | int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, | |
1792 | struct drm_device *dev) | |
1793 | { | |
1794 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1795 | struct platform_device *pdev = msm_host->pdev; | |
1796 | int ret; | |
1797 | ||
1798 | msm_host->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); | |
1799 | if (msm_host->irq < 0) { | |
1800 | ret = msm_host->irq; | |
1801 | dev_err(dev->dev, "failed to get irq: %d\n", ret); | |
1802 | return ret; | |
1803 | } | |
1804 | ||
1805 | ret = devm_request_irq(&pdev->dev, msm_host->irq, | |
1806 | dsi_host_irq, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, | |
1807 | "dsi_isr", msm_host); | |
1808 | if (ret < 0) { | |
1809 | dev_err(&pdev->dev, "failed to request IRQ%u: %d\n", | |
1810 | msm_host->irq, ret); | |
1811 | return ret; | |
1812 | } | |
1813 | ||
1814 | msm_host->dev = dev; | |
1815 | ret = dsi_tx_buf_alloc(msm_host, SZ_4K); | |
1816 | if (ret) { | |
1817 | pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret); | |
1818 | return ret; | |
1819 | } | |
1820 | ||
1821 | return 0; | |
1822 | } | |
1823 | ||
1824 | int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer) | |
1825 | { | |
1826 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
a689554b HL |
1827 | int ret; |
1828 | ||
1829 | /* Register mipi dsi host */ | |
1830 | if (!msm_host->registered) { | |
1831 | host->dev = &msm_host->pdev->dev; | |
1832 | host->ops = &dsi_host_ops; | |
1833 | ret = mipi_dsi_host_register(host); | |
1834 | if (ret) | |
1835 | return ret; | |
1836 | ||
1837 | msm_host->registered = true; | |
1838 | ||
1839 | /* If the panel driver has not been probed after host register, | |
1840 | * we should defer the host's probe. | |
1841 | * It makes sure panel is connected when fbcon detects | |
1842 | * connector status and gets the proper display mode to | |
1843 | * create framebuffer. | |
f7009d26 AT |
1844 | * Don't try to defer if there is nothing connected to the dsi |
1845 | * output | |
a689554b | 1846 | */ |
a9ddac9c AT |
1847 | if (check_defer && msm_host->device_node) { |
1848 | if (!of_drm_find_panel(msm_host->device_node)) | |
c118e290 AT |
1849 | if (!of_drm_find_bridge(msm_host->device_node)) |
1850 | return -EPROBE_DEFER; | |
a689554b HL |
1851 | } |
1852 | } | |
1853 | ||
1854 | return 0; | |
1855 | } | |
1856 | ||
1857 | void msm_dsi_host_unregister(struct mipi_dsi_host *host) | |
1858 | { | |
1859 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1860 | ||
1861 | if (msm_host->registered) { | |
1862 | mipi_dsi_host_unregister(host); | |
1863 | host->dev = NULL; | |
1864 | host->ops = NULL; | |
1865 | msm_host->registered = false; | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, | |
1870 | const struct mipi_dsi_msg *msg) | |
1871 | { | |
1872 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1873 | ||
1874 | /* TODO: make sure dsi_cmd_mdp is idle. | |
1875 | * Since DSI6G v1.2.0, we can set DSI_TRIG_CTRL.BLOCK_DMA_WITHIN_FRAME | |
1876 | * to ask H/W to wait until cmd mdp is idle. S/W wait is not needed. | |
1877 | * How to handle the old versions? Wait for mdp cmd done? | |
1878 | */ | |
1879 | ||
1880 | /* | |
1881 | * mdss interrupt is generated in mdp core clock domain | |
1882 | * mdp clock need to be enabled to receive dsi interrupt | |
1883 | */ | |
1884 | dsi_clk_ctrl(msm_host, 1); | |
1885 | ||
1886 | /* TODO: vote for bus bandwidth */ | |
1887 | ||
1888 | if (!(msg->flags & MIPI_DSI_MSG_USE_LPM)) | |
1889 | dsi_set_tx_power_mode(0, msm_host); | |
1890 | ||
1891 | msm_host->dma_cmd_ctrl_restore = dsi_read(msm_host, REG_DSI_CTRL); | |
1892 | dsi_write(msm_host, REG_DSI_CTRL, | |
1893 | msm_host->dma_cmd_ctrl_restore | | |
1894 | DSI_CTRL_CMD_MODE_EN | | |
1895 | DSI_CTRL_ENABLE); | |
1896 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 1); | |
1897 | ||
1898 | return 0; | |
1899 | } | |
1900 | ||
1901 | void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, | |
1902 | const struct mipi_dsi_msg *msg) | |
1903 | { | |
1904 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1905 | ||
1906 | dsi_intr_ctrl(msm_host, DSI_IRQ_MASK_CMD_DMA_DONE, 0); | |
1907 | dsi_write(msm_host, REG_DSI_CTRL, msm_host->dma_cmd_ctrl_restore); | |
1908 | ||
1909 | if (!(msg->flags & MIPI_DSI_MSG_USE_LPM)) | |
1910 | dsi_set_tx_power_mode(1, msm_host); | |
1911 | ||
1912 | /* TODO: unvote for bus bandwidth */ | |
1913 | ||
1914 | dsi_clk_ctrl(msm_host, 0); | |
1915 | } | |
1916 | ||
1917 | int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, | |
1918 | const struct mipi_dsi_msg *msg) | |
1919 | { | |
1920 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
1921 | ||
1922 | return dsi_cmds2buf_tx(msm_host, msg); | |
1923 | } | |
1924 | ||
1925 | int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, | |
1926 | const struct mipi_dsi_msg *msg) | |
1927 | { | |
1928 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
d248b61f | 1929 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
a689554b HL |
1930 | int data_byte, rx_byte, dlen, end; |
1931 | int short_response, diff, pkt_size, ret = 0; | |
1932 | char cmd; | |
1933 | int rlen = msg->rx_len; | |
1934 | u8 *buf; | |
1935 | ||
1936 | if (rlen <= 2) { | |
1937 | short_response = 1; | |
1938 | pkt_size = rlen; | |
1939 | rx_byte = 4; | |
1940 | } else { | |
1941 | short_response = 0; | |
1942 | data_byte = 10; /* first read */ | |
1943 | if (rlen < data_byte) | |
1944 | pkt_size = rlen; | |
1945 | else | |
1946 | pkt_size = data_byte; | |
1947 | rx_byte = data_byte + 6; /* 4 header + 2 crc */ | |
1948 | } | |
1949 | ||
1950 | buf = msm_host->rx_buf; | |
1951 | end = 0; | |
1952 | while (!end) { | |
1953 | u8 tx[2] = {pkt_size & 0xff, pkt_size >> 8}; | |
1954 | struct mipi_dsi_msg max_pkt_size_msg = { | |
1955 | .channel = msg->channel, | |
1956 | .type = MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, | |
1957 | .tx_len = 2, | |
1958 | .tx_buf = tx, | |
1959 | }; | |
1960 | ||
1961 | DBG("rlen=%d pkt_size=%d rx_byte=%d", | |
1962 | rlen, pkt_size, rx_byte); | |
1963 | ||
1964 | ret = dsi_cmds2buf_tx(msm_host, &max_pkt_size_msg); | |
1965 | if (ret < 2) { | |
1966 | pr_err("%s: Set max pkt size failed, %d\n", | |
1967 | __func__, ret); | |
1968 | return -EINVAL; | |
1969 | } | |
1970 | ||
d248b61f HL |
1971 | if ((cfg_hnd->major == MSM_DSI_VER_MAJOR_6G) && |
1972 | (cfg_hnd->minor >= MSM_DSI_6G_VER_MINOR_V1_1)) { | |
a689554b HL |
1973 | /* Clear the RDBK_DATA registers */ |
1974 | dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, | |
1975 | DSI_RDBK_DATA_CTRL_CLR); | |
1976 | wmb(); /* make sure the RDBK registers are cleared */ | |
1977 | dsi_write(msm_host, REG_DSI_RDBK_DATA_CTRL, 0); | |
1978 | wmb(); /* release cleared status before transfer */ | |
1979 | } | |
1980 | ||
1981 | ret = dsi_cmds2buf_tx(msm_host, msg); | |
1982 | if (ret < msg->tx_len) { | |
1983 | pr_err("%s: Read cmd Tx failed, %d\n", __func__, ret); | |
1984 | return ret; | |
1985 | } | |
1986 | ||
1987 | /* | |
1988 | * once cmd_dma_done interrupt received, | |
1989 | * return data from client is ready and stored | |
1990 | * at RDBK_DATA register already | |
1991 | * since rx fifo is 16 bytes, dcs header is kept at first loop, | |
1992 | * after that dcs header lost during shift into registers | |
1993 | */ | |
1994 | dlen = dsi_cmd_dma_rx(msm_host, buf, rx_byte, pkt_size); | |
1995 | ||
1996 | if (dlen <= 0) | |
1997 | return 0; | |
1998 | ||
1999 | if (short_response) | |
2000 | break; | |
2001 | ||
2002 | if (rlen <= data_byte) { | |
2003 | diff = data_byte - rlen; | |
2004 | end = 1; | |
2005 | } else { | |
2006 | diff = 0; | |
2007 | rlen -= data_byte; | |
2008 | } | |
2009 | ||
2010 | if (!end) { | |
2011 | dlen -= 2; /* 2 crc */ | |
2012 | dlen -= diff; | |
2013 | buf += dlen; /* next start position */ | |
2014 | data_byte = 14; /* NOT first read */ | |
2015 | if (rlen < data_byte) | |
2016 | pkt_size += rlen; | |
2017 | else | |
2018 | pkt_size += data_byte; | |
2019 | DBG("buf=%p dlen=%d diff=%d", buf, dlen, diff); | |
2020 | } | |
2021 | } | |
2022 | ||
2023 | /* | |
2024 | * For single Long read, if the requested rlen < 10, | |
2025 | * we need to shift the start position of rx | |
2026 | * data buffer to skip the bytes which are not | |
2027 | * updated. | |
2028 | */ | |
2029 | if (pkt_size < 10 && !short_response) | |
2030 | buf = msm_host->rx_buf + (10 - rlen); | |
2031 | else | |
2032 | buf = msm_host->rx_buf; | |
2033 | ||
2034 | cmd = buf[0]; | |
2035 | switch (cmd) { | |
2036 | case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT: | |
2037 | pr_err("%s: rx ACK_ERR_PACLAGE\n", __func__); | |
2038 | ret = 0; | |
651ad3f5 | 2039 | break; |
a689554b HL |
2040 | case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE: |
2041 | case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE: | |
2042 | ret = dsi_short_read1_resp(buf, msg); | |
2043 | break; | |
2044 | case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE: | |
2045 | case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE: | |
2046 | ret = dsi_short_read2_resp(buf, msg); | |
2047 | break; | |
2048 | case MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE: | |
2049 | case MIPI_DSI_RX_DCS_LONG_READ_RESPONSE: | |
2050 | ret = dsi_long_read_resp(buf, msg); | |
2051 | break; | |
2052 | default: | |
2053 | pr_warn("%s:Invalid response cmd\n", __func__); | |
2054 | ret = 0; | |
2055 | } | |
2056 | ||
2057 | return ret; | |
2058 | } | |
2059 | ||
4ff9d4cb AT |
2060 | void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, u32 dma_base, |
2061 | u32 len) | |
a689554b HL |
2062 | { |
2063 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2064 | ||
4ff9d4cb | 2065 | dsi_write(msm_host, REG_DSI_DMA_BASE, dma_base); |
a689554b HL |
2066 | dsi_write(msm_host, REG_DSI_DMA_LEN, len); |
2067 | dsi_write(msm_host, REG_DSI_TRIG_DMA, 1); | |
2068 | ||
2069 | /* Make sure trigger happens */ | |
2070 | wmb(); | |
2071 | } | |
2072 | ||
9d32c498 HL |
2073 | int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, |
2074 | struct msm_dsi_pll *src_pll) | |
2075 | { | |
2076 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
4bfa9748 | 2077 | const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; |
9d32c498 HL |
2078 | struct clk *byte_clk_provider, *pixel_clk_provider; |
2079 | int ret; | |
2080 | ||
2081 | ret = msm_dsi_pll_get_clk_provider(src_pll, | |
2082 | &byte_clk_provider, &pixel_clk_provider); | |
2083 | if (ret) { | |
2084 | pr_info("%s: can't get provider from pll, don't set parent\n", | |
2085 | __func__); | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | ret = clk_set_parent(msm_host->byte_clk_src, byte_clk_provider); | |
2090 | if (ret) { | |
2091 | pr_err("%s: can't set parent to byte_clk_src. ret=%d\n", | |
2092 | __func__, ret); | |
2093 | goto exit; | |
2094 | } | |
2095 | ||
2096 | ret = clk_set_parent(msm_host->pixel_clk_src, pixel_clk_provider); | |
2097 | if (ret) { | |
2098 | pr_err("%s: can't set parent to pixel_clk_src. ret=%d\n", | |
2099 | __func__, ret); | |
2100 | goto exit; | |
2101 | } | |
2102 | ||
4bfa9748 AT |
2103 | if (cfg_hnd->major == MSM_DSI_VER_MAJOR_V2) { |
2104 | ret = clk_set_parent(msm_host->dsi_clk_src, pixel_clk_provider); | |
2105 | if (ret) { | |
2106 | pr_err("%s: can't set parent to dsi_clk_src. ret=%d\n", | |
2107 | __func__, ret); | |
2108 | goto exit; | |
2109 | } | |
2110 | ||
2111 | ret = clk_set_parent(msm_host->esc_clk_src, byte_clk_provider); | |
2112 | if (ret) { | |
2113 | pr_err("%s: can't set parent to esc_clk_src. ret=%d\n", | |
2114 | __func__, ret); | |
2115 | goto exit; | |
2116 | } | |
2117 | } | |
2118 | ||
9d32c498 HL |
2119 | exit: |
2120 | return ret; | |
2121 | } | |
2122 | ||
34d9545b AT |
2123 | void msm_dsi_host_reset_phy(struct mipi_dsi_host *host) |
2124 | { | |
2125 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2126 | ||
2127 | DBG(""); | |
2128 | dsi_write(msm_host, REG_DSI_PHY_RESET, DSI_PHY_RESET_RESET); | |
2129 | /* Make sure fully reset */ | |
2130 | wmb(); | |
2131 | udelay(1000); | |
2132 | dsi_write(msm_host, REG_DSI_PHY_RESET, 0); | |
2133 | udelay(100); | |
2134 | } | |
2135 | ||
b62aa70a HL |
2136 | void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, |
2137 | struct msm_dsi_phy_clk_request *clk_req) | |
2138 | { | |
2139 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
d4cea38e AT |
2140 | int ret; |
2141 | ||
2142 | ret = dsi_calc_clk_rate(msm_host); | |
2143 | if (ret) { | |
2144 | pr_err("%s: unable to calc clk rate, %d\n", __func__, ret); | |
2145 | return; | |
2146 | } | |
b62aa70a HL |
2147 | |
2148 | clk_req->bitclk_rate = msm_host->byte_clk_rate * 8; | |
2149 | clk_req->escclk_rate = msm_host->esc_clk_rate; | |
2150 | } | |
2151 | ||
a689554b HL |
2152 | int msm_dsi_host_enable(struct mipi_dsi_host *host) |
2153 | { | |
2154 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2155 | ||
2156 | dsi_op_mode_config(msm_host, | |
2157 | !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), true); | |
2158 | ||
2159 | /* TODO: clock should be turned off for command mode, | |
2160 | * and only turned on before MDP START. | |
2161 | * This part of code should be enabled once mdp driver support it. | |
2162 | */ | |
2163 | /* if (msm_panel->mode == MSM_DSI_CMD_MODE) | |
2164 | dsi_clk_ctrl(msm_host, 0); */ | |
2165 | ||
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | int msm_dsi_host_disable(struct mipi_dsi_host *host) | |
2170 | { | |
2171 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2172 | ||
2173 | dsi_op_mode_config(msm_host, | |
2174 | !!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false); | |
2175 | ||
2176 | /* Since we have disabled INTF, the video engine won't stop so that | |
2177 | * the cmd engine will be blocked. | |
2178 | * Reset to disable video engine so that we can send off cmd. | |
2179 | */ | |
2180 | dsi_sw_reset(msm_host); | |
2181 | ||
2182 | return 0; | |
2183 | } | |
2184 | ||
0c7df47f AT |
2185 | static void msm_dsi_sfpb_config(struct msm_dsi_host *msm_host, bool enable) |
2186 | { | |
2187 | enum sfpb_ahb_arb_master_port_en en; | |
2188 | ||
2189 | if (!msm_host->sfpb) | |
2190 | return; | |
2191 | ||
2192 | en = enable ? SFPB_MASTER_PORT_ENABLE : SFPB_MASTER_PORT_DISABLE; | |
2193 | ||
2194 | regmap_update_bits(msm_host->sfpb, REG_SFPB_GPREG, | |
2195 | SFPB_GPREG_MASTER_PORT_EN__MASK, | |
2196 | SFPB_GPREG_MASTER_PORT_EN(en)); | |
2197 | } | |
2198 | ||
b62aa70a HL |
2199 | int msm_dsi_host_power_on(struct mipi_dsi_host *host, |
2200 | struct msm_dsi_phy_shared_timings *phy_shared_timings) | |
a689554b HL |
2201 | { |
2202 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
a689554b HL |
2203 | int ret = 0; |
2204 | ||
2205 | mutex_lock(&msm_host->dev_mutex); | |
2206 | if (msm_host->power_on) { | |
2207 | DBG("dsi host already on"); | |
2208 | goto unlock_ret; | |
2209 | } | |
2210 | ||
0c7df47f AT |
2211 | msm_dsi_sfpb_config(msm_host, true); |
2212 | ||
a689554b HL |
2213 | ret = dsi_host_regulator_enable(msm_host); |
2214 | if (ret) { | |
2215 | pr_err("%s:Failed to enable vregs.ret=%d\n", | |
2216 | __func__, ret); | |
2217 | goto unlock_ret; | |
2218 | } | |
2219 | ||
a689554b HL |
2220 | ret = dsi_clk_ctrl(msm_host, 1); |
2221 | if (ret) { | |
2222 | pr_err("%s: failed to enable clocks. ret=%d\n", __func__, ret); | |
2223 | goto fail_disable_reg; | |
2224 | } | |
2225 | ||
ab8909b0 HL |
2226 | ret = pinctrl_pm_select_default_state(&msm_host->pdev->dev); |
2227 | if (ret) { | |
2228 | pr_err("%s: failed to set pinctrl default state, %d\n", | |
2229 | __func__, ret); | |
2230 | goto fail_disable_clk; | |
2231 | } | |
2232 | ||
a689554b HL |
2233 | dsi_timing_setup(msm_host); |
2234 | dsi_sw_reset(msm_host); | |
b62aa70a | 2235 | dsi_ctrl_config(msm_host, true, phy_shared_timings); |
a689554b HL |
2236 | |
2237 | if (msm_host->disp_en_gpio) | |
2238 | gpiod_set_value(msm_host->disp_en_gpio, 1); | |
2239 | ||
2240 | msm_host->power_on = true; | |
2241 | mutex_unlock(&msm_host->dev_mutex); | |
2242 | ||
2243 | return 0; | |
2244 | ||
ab8909b0 HL |
2245 | fail_disable_clk: |
2246 | dsi_clk_ctrl(msm_host, 0); | |
a689554b HL |
2247 | fail_disable_reg: |
2248 | dsi_host_regulator_disable(msm_host); | |
2249 | unlock_ret: | |
2250 | mutex_unlock(&msm_host->dev_mutex); | |
2251 | return ret; | |
2252 | } | |
2253 | ||
2254 | int msm_dsi_host_power_off(struct mipi_dsi_host *host) | |
2255 | { | |
2256 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2257 | ||
2258 | mutex_lock(&msm_host->dev_mutex); | |
2259 | if (!msm_host->power_on) { | |
2260 | DBG("dsi host already off"); | |
2261 | goto unlock_ret; | |
2262 | } | |
2263 | ||
dceac340 | 2264 | dsi_ctrl_config(msm_host, false, NULL); |
a689554b HL |
2265 | |
2266 | if (msm_host->disp_en_gpio) | |
2267 | gpiod_set_value(msm_host->disp_en_gpio, 0); | |
2268 | ||
ab8909b0 HL |
2269 | pinctrl_pm_select_sleep_state(&msm_host->pdev->dev); |
2270 | ||
a689554b HL |
2271 | dsi_clk_ctrl(msm_host, 0); |
2272 | ||
2273 | dsi_host_regulator_disable(msm_host); | |
2274 | ||
0c7df47f AT |
2275 | msm_dsi_sfpb_config(msm_host, false); |
2276 | ||
a689554b HL |
2277 | DBG("-"); |
2278 | ||
2279 | msm_host->power_on = false; | |
2280 | ||
2281 | unlock_ret: | |
2282 | mutex_unlock(&msm_host->dev_mutex); | |
2283 | return 0; | |
2284 | } | |
2285 | ||
2286 | int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, | |
2287 | struct drm_display_mode *mode) | |
2288 | { | |
2289 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2290 | ||
2291 | if (msm_host->mode) { | |
2292 | drm_mode_destroy(msm_host->dev, msm_host->mode); | |
2293 | msm_host->mode = NULL; | |
2294 | } | |
2295 | ||
2296 | msm_host->mode = drm_mode_duplicate(msm_host->dev, mode); | |
2abe1f25 | 2297 | if (!msm_host->mode) { |
a689554b | 2298 | pr_err("%s: cannot duplicate mode\n", __func__); |
2abe1f25 | 2299 | return -ENOMEM; |
a689554b HL |
2300 | } |
2301 | ||
2302 | return 0; | |
2303 | } | |
2304 | ||
2305 | struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, | |
2306 | unsigned long *panel_flags) | |
2307 | { | |
2308 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2309 | struct drm_panel *panel; | |
2310 | ||
a9ddac9c | 2311 | panel = of_drm_find_panel(msm_host->device_node); |
a689554b HL |
2312 | if (panel_flags) |
2313 | *panel_flags = msm_host->mode_flags; | |
2314 | ||
2315 | return panel; | |
2316 | } | |
2317 | ||
c118e290 AT |
2318 | struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host) |
2319 | { | |
2320 | struct msm_dsi_host *msm_host = to_msm_dsi_host(host); | |
2321 | ||
2322 | return of_drm_find_bridge(msm_host->device_node); | |
2323 | } |