xref: /openbmc/linux/drivers/gpu/drm/vc4/vc4_hdmi_phy.c (revision 6135ee07)
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2015 Broadcom
4  * Copyright (c) 2014 The Linux Foundation. All rights reserved.
5  * Copyright (C) 2013 Red Hat
6  * Author: Rob Clark <robdclark@gmail.com>
7  */
8 
9 #include "vc4_hdmi.h"
10 #include "vc4_regs.h"
11 #include "vc4_hdmi_regs.h"
12 
13 #define VC4_HDMI_TX_PHY_RESET_CTL_PLL_RESETB	BIT(5)
14 #define VC4_HDMI_TX_PHY_RESET_CTL_PLLDIV_RESETB	BIT(4)
15 #define VC4_HDMI_TX_PHY_RESET_CTL_TX_CK_RESET	BIT(3)
16 #define VC4_HDMI_TX_PHY_RESET_CTL_TX_2_RESET	BIT(2)
17 #define VC4_HDMI_TX_PHY_RESET_CTL_TX_1_RESET	BIT(1)
18 #define VC4_HDMI_TX_PHY_RESET_CTL_TX_0_RESET	BIT(0)
19 
20 #define VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN	BIT(4)
21 
22 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_PREEMP_SHIFT	29
23 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_PREEMP_MASK	VC4_MASK(31, 29)
24 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_MAINDRV_SHIFT	24
25 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_MAINDRV_MASK	VC4_MASK(28, 24)
26 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_PREEMP_SHIFT	21
27 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_PREEMP_MASK	VC4_MASK(23, 21)
28 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_MAINDRV_SHIFT	16
29 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_MAINDRV_MASK	VC4_MASK(20, 16)
30 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_PREEMP_SHIFT	13
31 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_PREEMP_MASK	VC4_MASK(15, 13)
32 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_MAINDRV_SHIFT	8
33 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_MAINDRV_MASK	VC4_MASK(12, 8)
34 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_PREEMP_SHIFT	5
35 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_PREEMP_MASK	VC4_MASK(7, 5)
36 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_MAINDRV_SHIFT	0
37 #define VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_MAINDRV_MASK	VC4_MASK(4, 0)
38 
39 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA2_SHIFT	15
40 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA2_MASK	VC4_MASK(19, 15)
41 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA1_SHIFT	10
42 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA1_MASK	VC4_MASK(14, 10)
43 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA0_SHIFT	5
44 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA0_MASK	VC4_MASK(9, 5)
45 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_CK_SHIFT		0
46 #define VC4_HDMI_TX_PHY_CTL_1_RES_SEL_CK_MASK		VC4_MASK(4, 0)
47 
48 #define VC4_HDMI_TX_PHY_CTL_2_VCO_GAIN_SHIFT		16
49 #define VC4_HDMI_TX_PHY_CTL_2_VCO_GAIN_MASK		VC4_MASK(19, 16)
50 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA2_SHIFT	12
51 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA2_MASK	VC4_MASK(15, 12)
52 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA1_SHIFT	8
53 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA1_MASK	VC4_MASK(11, 8)
54 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA0_SHIFT	4
55 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA0_MASK	VC4_MASK(7, 4)
56 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELCK_SHIFT	0
57 #define VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELCK_MASK	VC4_MASK(3, 0)
58 
59 #define VC4_HDMI_TX_PHY_CTL_3_RP_SHIFT			17
60 #define VC4_HDMI_TX_PHY_CTL_3_RP_MASK			VC4_MASK(19, 17)
61 #define VC4_HDMI_TX_PHY_CTL_3_RZ_SHIFT			12
62 #define VC4_HDMI_TX_PHY_CTL_3_RZ_MASK			VC4_MASK(16, 12)
63 #define VC4_HDMI_TX_PHY_CTL_3_CP1_SHIFT			10
64 #define VC4_HDMI_TX_PHY_CTL_3_CP1_MASK			VC4_MASK(11, 10)
65 #define VC4_HDMI_TX_PHY_CTL_3_CP_SHIFT			8
66 #define VC4_HDMI_TX_PHY_CTL_3_CP_MASK			VC4_MASK(9, 8)
67 #define VC4_HDMI_TX_PHY_CTL_3_CZ_SHIFT			6
68 #define VC4_HDMI_TX_PHY_CTL_3_CZ_MASK			VC4_MASK(7, 6)
69 #define VC4_HDMI_TX_PHY_CTL_3_ICP_SHIFT			0
70 #define VC4_HDMI_TX_PHY_CTL_3_ICP_MASK			VC4_MASK(5, 0)
71 
72 #define VC4_HDMI_TX_PHY_PLL_CTL_0_MASH11_MODE		BIT(13)
73 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VC_RANGE_EN		BIT(12)
74 #define VC4_HDMI_TX_PHY_PLL_CTL_0_EMULATE_VC_LOW	BIT(11)
75 #define VC4_HDMI_TX_PHY_PLL_CTL_0_EMULATE_VC_HIGH	BIT(10)
76 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_SEL_SHIFT		9
77 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_SEL_MASK		VC4_MASK(9, 9)
78 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_FB_DIV2		BIT(8)
79 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_POST_DIV2		BIT(7)
80 #define VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_CONT_EN		BIT(6)
81 #define VC4_HDMI_TX_PHY_PLL_CTL_0_ENA_VCO_CLK		BIT(5)
82 
83 #define VC4_HDMI_TX_PHY_PLL_CTL_1_CPP_SHIFT			16
84 #define VC4_HDMI_TX_PHY_PLL_CTL_1_CPP_MASK			VC4_MASK(27, 16)
85 #define VC4_HDMI_TX_PHY_PLL_CTL_1_FREQ_DOUBLER_DELAY_SHIFT	14
86 #define VC4_HDMI_TX_PHY_PLL_CTL_1_FREQ_DOUBLER_DELAY_MASK	VC4_MASK(15, 14)
87 #define VC4_HDMI_TX_PHY_PLL_CTL_1_FREQ_DOUBLER_ENABLE		BIT(13)
88 #define VC4_HDMI_TX_PHY_PLL_CTL_1_POST_RST_SEL_SHIFT		11
89 #define VC4_HDMI_TX_PHY_PLL_CTL_1_POST_RST_SEL_MASK		VC4_MASK(12, 11)
90 
91 #define VC4_HDMI_TX_PHY_CLK_DIV_VCO_SHIFT		8
92 #define VC4_HDMI_TX_PHY_CLK_DIV_VCO_MASK		VC4_MASK(15, 8)
93 
94 #define VC4_HDMI_TX_PHY_PLL_CFG_PDIV_SHIFT		0
95 #define VC4_HDMI_TX_PHY_PLL_CFG_PDIV_MASK		VC4_MASK(3, 0)
96 
97 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TXCK_OUT_SEL_MASK	VC4_MASK(13, 12)
98 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TXCK_OUT_SEL_SHIFT	12
99 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX2_OUT_SEL_MASK	VC4_MASK(9, 8)
100 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX2_OUT_SEL_SHIFT	8
101 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX1_OUT_SEL_MASK	VC4_MASK(5, 4)
102 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX1_OUT_SEL_SHIFT	4
103 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX0_OUT_SEL_MASK	VC4_MASK(1, 0)
104 #define VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX0_OUT_SEL_SHIFT	0
105 
106 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1_MIN_LIMIT_MASK		VC4_MASK(27, 0)
107 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1_MIN_LIMIT_SHIFT	0
108 
109 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2_MAX_LIMIT_MASK		VC4_MASK(27, 0)
110 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2_MAX_LIMIT_SHIFT	0
111 
112 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_STABLE_THRESHOLD_MASK	VC4_MASK(31, 16)
113 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_STABLE_THRESHOLD_SHIFT	16
114 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_HOLD_THRESHOLD_MASK	VC4_MASK(15, 0)
115 #define VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_HOLD_THRESHOLD_SHIFT	0
116 
117 #define VC4_HDMI_RM_CONTROL_EN_FREEZE_COUNTERS		BIT(19)
118 #define VC4_HDMI_RM_CONTROL_EN_LOAD_INTEGRATOR		BIT(17)
119 #define VC4_HDMI_RM_CONTROL_FREE_RUN			BIT(4)
120 
121 #define VC4_HDMI_RM_OFFSET_ONLY				BIT(31)
122 #define VC4_HDMI_RM_OFFSET_OFFSET_SHIFT			0
123 #define VC4_HDMI_RM_OFFSET_OFFSET_MASK			VC4_MASK(30, 0)
124 
125 #define VC4_HDMI_RM_FORMAT_SHIFT_SHIFT			24
126 #define VC4_HDMI_RM_FORMAT_SHIFT_MASK			VC4_MASK(25, 24)
127 
128 #define OSCILLATOR_FREQUENCY	54000000
129 
vc4_hdmi_phy_init(struct vc4_hdmi * vc4_hdmi,struct vc4_hdmi_connector_state * conn_state)130 void vc4_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
131 		       struct vc4_hdmi_connector_state *conn_state)
132 {
133 	unsigned long flags;
134 
135 	/* PHY should be in reset, like
136 	 * vc4_hdmi_encoder_disable() does.
137 	 */
138 
139 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
140 
141 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16);
142 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0);
143 
144 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
145 }
146 
vc4_hdmi_phy_disable(struct vc4_hdmi * vc4_hdmi)147 void vc4_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi)
148 {
149 	unsigned long flags;
150 
151 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
152 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0xf << 16);
153 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
154 }
155 
vc4_hdmi_phy_rng_enable(struct vc4_hdmi * vc4_hdmi)156 void vc4_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi)
157 {
158 	unsigned long flags;
159 
160 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
161 	HDMI_WRITE(HDMI_TX_PHY_CTL_0,
162 		   HDMI_READ(HDMI_TX_PHY_CTL_0) &
163 		   ~VC4_HDMI_TX_PHY_RNG_PWRDN);
164 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
165 }
166 
vc4_hdmi_phy_rng_disable(struct vc4_hdmi * vc4_hdmi)167 void vc4_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi)
168 {
169 	unsigned long flags;
170 
171 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
172 	HDMI_WRITE(HDMI_TX_PHY_CTL_0,
173 		   HDMI_READ(HDMI_TX_PHY_CTL_0) |
174 		   VC4_HDMI_TX_PHY_RNG_PWRDN);
175 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
176 }
177 
178 static unsigned long long
phy_get_vco_freq(unsigned long long clock,u8 * vco_sel,u8 * vco_div)179 phy_get_vco_freq(unsigned long long clock, u8 *vco_sel, u8 *vco_div)
180 {
181 	unsigned long long vco_freq = clock;
182 	unsigned int _vco_div = 0;
183 	unsigned int _vco_sel = 0;
184 
185 	while (vco_freq < 3000000000ULL) {
186 		_vco_div++;
187 		vco_freq = clock * _vco_div * 10;
188 	}
189 
190 	if (vco_freq > 4500000000ULL)
191 		_vco_sel = 1;
192 
193 	*vco_sel = _vco_sel;
194 	*vco_div = _vco_div;
195 
196 	return vco_freq;
197 }
198 
phy_get_cp_current(unsigned long vco_freq)199 static u8 phy_get_cp_current(unsigned long vco_freq)
200 {
201 	if (vco_freq < 3700000000ULL)
202 		return 0x1c;
203 
204 	return 0x18;
205 }
206 
phy_get_rm_offset(unsigned long long vco_freq)207 static u32 phy_get_rm_offset(unsigned long long vco_freq)
208 {
209 	unsigned long long fref = OSCILLATOR_FREQUENCY;
210 	u64 offset = 0;
211 
212 	/* RM offset is stored as 9.22 format */
213 	offset = vco_freq * 2;
214 	offset = offset << 22;
215 	do_div(offset, fref);
216 	offset >>= 2;
217 
218 	return offset;
219 }
220 
phy_get_vco_gain(unsigned long long vco_freq)221 static u8 phy_get_vco_gain(unsigned long long vco_freq)
222 {
223 	if (vco_freq < 3350000000ULL)
224 		return 0xf;
225 
226 	if (vco_freq < 3700000000ULL)
227 		return 0xc;
228 
229 	if (vco_freq < 4050000000ULL)
230 		return 0x6;
231 
232 	if (vco_freq < 4800000000ULL)
233 		return 0x5;
234 
235 	if (vco_freq < 5200000000ULL)
236 		return 0x7;
237 
238 	return 0x2;
239 }
240 
241 struct phy_lane_settings {
242 	struct {
243 		u8 preemphasis;
244 		u8 main_driver;
245 	} amplitude;
246 
247 	u8 res_sel_data;
248 	u8 term_res_sel_data;
249 };
250 
251 struct phy_settings {
252 	unsigned long long min_rate;
253 	unsigned long long max_rate;
254 	struct phy_lane_settings channel[3];
255 	struct phy_lane_settings clock;
256 };
257 
258 static const struct phy_settings vc5_hdmi_phy_settings[] = {
259 	{
260 		0, 50000000,
261 		{
262 			{{0x0, 0x0A}, 0x12, 0x0},
263 			{{0x0, 0x0A}, 0x12, 0x0},
264 			{{0x0, 0x0A}, 0x12, 0x0}
265 		},
266 		{{0x0, 0x0A}, 0x18, 0x0},
267 	},
268 	{
269 		50000001, 75000000,
270 		{
271 			{{0x0, 0x09}, 0x12, 0x0},
272 			{{0x0, 0x09}, 0x12, 0x0},
273 			{{0x0, 0x09}, 0x12, 0x0}
274 		},
275 		{{0x0, 0x0C}, 0x18, 0x3},
276 	},
277 	{
278 		75000001,   165000000,
279 		{
280 			{{0x0, 0x09}, 0x12, 0x0},
281 			{{0x0, 0x09}, 0x12, 0x0},
282 			{{0x0, 0x09}, 0x12, 0x0}
283 		},
284 		{{0x0, 0x0C}, 0x18, 0x3},
285 	},
286 	{
287 		165000001,  250000000,
288 		{
289 			{{0x0, 0x0F}, 0x12, 0x1},
290 			{{0x0, 0x0F}, 0x12, 0x1},
291 			{{0x0, 0x0F}, 0x12, 0x1}
292 		},
293 		{{0x0, 0x0C}, 0x18, 0x3},
294 	},
295 	{
296 		250000001,  340000000,
297 		{
298 			{{0x2, 0x0D}, 0x12, 0x1},
299 			{{0x2, 0x0D}, 0x12, 0x1},
300 			{{0x2, 0x0D}, 0x12, 0x1}
301 		},
302 		{{0x0, 0x0C}, 0x18, 0xF},
303 	},
304 	{
305 		340000001,  450000000,
306 		{
307 			{{0x0, 0x1B}, 0x12, 0xF},
308 			{{0x0, 0x1B}, 0x12, 0xF},
309 			{{0x0, 0x1B}, 0x12, 0xF}
310 		},
311 		{{0x0, 0x0A}, 0x12, 0xF},
312 	},
313 	{
314 		450000001,  600000000,
315 		{
316 			{{0x0, 0x1C}, 0x12, 0xF},
317 			{{0x0, 0x1C}, 0x12, 0xF},
318 			{{0x0, 0x1C}, 0x12, 0xF}
319 		},
320 		{{0x0, 0x0B}, 0x13, 0xF},
321 	},
322 };
323 
phy_get_settings(unsigned long long tmds_rate)324 static const struct phy_settings *phy_get_settings(unsigned long long tmds_rate)
325 {
326 	unsigned int count = ARRAY_SIZE(vc5_hdmi_phy_settings);
327 	unsigned int i;
328 
329 	for (i = 0; i < count; i++) {
330 		const struct phy_settings *s = &vc5_hdmi_phy_settings[i];
331 
332 		if (tmds_rate >= s->min_rate && tmds_rate <= s->max_rate)
333 			return s;
334 	}
335 
336 	/*
337 	 * If the pixel clock exceeds our max setting, try the max
338 	 * setting anyway.
339 	 */
340 	return &vc5_hdmi_phy_settings[count - 1];
341 }
342 
343 static const struct phy_lane_settings *
phy_get_channel_settings(enum vc4_hdmi_phy_channel chan,unsigned long long tmds_rate)344 phy_get_channel_settings(enum vc4_hdmi_phy_channel chan,
345 			 unsigned long long tmds_rate)
346 {
347 	const struct phy_settings *settings = phy_get_settings(tmds_rate);
348 
349 	if (chan == PHY_LANE_CK)
350 		return &settings->clock;
351 
352 	return &settings->channel[chan];
353 }
354 
vc5_hdmi_reset_phy(struct vc4_hdmi * vc4_hdmi)355 static void vc5_hdmi_reset_phy(struct vc4_hdmi *vc4_hdmi)
356 {
357 	lockdep_assert_held(&vc4_hdmi->hw_lock);
358 
359 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL, 0x0f);
360 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL, BIT(10));
361 }
362 
vc5_hdmi_phy_init(struct vc4_hdmi * vc4_hdmi,struct vc4_hdmi_connector_state * conn_state)363 void vc5_hdmi_phy_init(struct vc4_hdmi *vc4_hdmi,
364 		       struct vc4_hdmi_connector_state *conn_state)
365 {
366 	const struct phy_lane_settings *chan0_settings, *chan1_settings, *chan2_settings, *clock_settings;
367 	const struct vc4_hdmi_variant *variant = vc4_hdmi->variant;
368 	unsigned long long pixel_freq = conn_state->tmds_char_rate;
369 	unsigned long long vco_freq;
370 	unsigned char word_sel;
371 	unsigned long flags;
372 	u8 vco_sel, vco_div;
373 
374 	vco_freq = phy_get_vco_freq(pixel_freq, &vco_sel, &vco_div);
375 
376 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
377 
378 	vc5_hdmi_reset_phy(vc4_hdmi);
379 
380 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
381 		   VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN);
382 
383 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL,
384 		   HDMI_READ(HDMI_TX_PHY_RESET_CTL) &
385 		   ~VC4_HDMI_TX_PHY_RESET_CTL_TX_0_RESET &
386 		   ~VC4_HDMI_TX_PHY_RESET_CTL_TX_1_RESET &
387 		   ~VC4_HDMI_TX_PHY_RESET_CTL_TX_2_RESET &
388 		   ~VC4_HDMI_TX_PHY_RESET_CTL_TX_CK_RESET);
389 
390 	HDMI_WRITE(HDMI_RM_CONTROL,
391 		   HDMI_READ(HDMI_RM_CONTROL) |
392 		   VC4_HDMI_RM_CONTROL_EN_FREEZE_COUNTERS |
393 		   VC4_HDMI_RM_CONTROL_EN_LOAD_INTEGRATOR |
394 		   VC4_HDMI_RM_CONTROL_FREE_RUN);
395 
396 	HDMI_WRITE(HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1,
397 		   (HDMI_READ(HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1) &
398 		    ~VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1_MIN_LIMIT_MASK) |
399 		   VC4_SET_FIELD(0, VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_1_MIN_LIMIT));
400 
401 	HDMI_WRITE(HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2,
402 		   (HDMI_READ(HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2) &
403 		    ~VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2_MAX_LIMIT_MASK) |
404 		   VC4_SET_FIELD(0, VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_2_MAX_LIMIT));
405 
406 	HDMI_WRITE(HDMI_RM_OFFSET,
407 		   VC4_SET_FIELD(phy_get_rm_offset(vco_freq),
408 				 VC4_HDMI_RM_OFFSET_OFFSET) |
409 		   VC4_HDMI_RM_OFFSET_ONLY);
410 
411 	HDMI_WRITE(HDMI_TX_PHY_CLK_DIV,
412 		   VC4_SET_FIELD(vco_div, VC4_HDMI_TX_PHY_CLK_DIV_VCO));
413 
414 	HDMI_WRITE(HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4,
415 		   VC4_SET_FIELD(0xe147, VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_HOLD_THRESHOLD) |
416 		   VC4_SET_FIELD(0xe14, VC4_HDMI_TX_PHY_PLL_CALIBRATION_CONFIG_4_STABLE_THRESHOLD));
417 
418 	HDMI_WRITE(HDMI_TX_PHY_PLL_CTL_0,
419 		   VC4_HDMI_TX_PHY_PLL_CTL_0_ENA_VCO_CLK |
420 		   VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_CONT_EN |
421 		   VC4_HDMI_TX_PHY_PLL_CTL_0_MASH11_MODE |
422 		   VC4_SET_FIELD(vco_sel, VC4_HDMI_TX_PHY_PLL_CTL_0_VCO_SEL));
423 
424 	HDMI_WRITE(HDMI_TX_PHY_PLL_CTL_1,
425 		   HDMI_READ(HDMI_TX_PHY_PLL_CTL_1) |
426 		   VC4_HDMI_TX_PHY_PLL_CTL_1_FREQ_DOUBLER_ENABLE |
427 		   VC4_SET_FIELD(3, VC4_HDMI_TX_PHY_PLL_CTL_1_POST_RST_SEL) |
428 		   VC4_SET_FIELD(1, VC4_HDMI_TX_PHY_PLL_CTL_1_FREQ_DOUBLER_DELAY) |
429 		   VC4_SET_FIELD(0x8a, VC4_HDMI_TX_PHY_PLL_CTL_1_CPP));
430 
431 	HDMI_WRITE(HDMI_RM_FORMAT,
432 		   HDMI_READ(HDMI_RM_FORMAT) |
433 		   VC4_SET_FIELD(2, VC4_HDMI_RM_FORMAT_SHIFT));
434 
435 	HDMI_WRITE(HDMI_TX_PHY_PLL_CFG,
436 		   HDMI_READ(HDMI_TX_PHY_PLL_CFG) |
437 		   VC4_SET_FIELD(1, VC4_HDMI_TX_PHY_PLL_CFG_PDIV));
438 
439 	if (pixel_freq >= 340000000)
440 		word_sel = 3;
441 	else
442 		word_sel = 0;
443 	HDMI_WRITE(HDMI_TX_PHY_TMDS_CLK_WORD_SEL, word_sel);
444 
445 	HDMI_WRITE(HDMI_TX_PHY_CTL_3,
446 		   VC4_SET_FIELD(phy_get_cp_current(vco_freq),
447 				 VC4_HDMI_TX_PHY_CTL_3_ICP) |
448 		   VC4_SET_FIELD(1, VC4_HDMI_TX_PHY_CTL_3_CP) |
449 		   VC4_SET_FIELD(1, VC4_HDMI_TX_PHY_CTL_3_CP1) |
450 		   VC4_SET_FIELD(3, VC4_HDMI_TX_PHY_CTL_3_CZ) |
451 		   VC4_SET_FIELD(4, VC4_HDMI_TX_PHY_CTL_3_RP) |
452 		   VC4_SET_FIELD(6, VC4_HDMI_TX_PHY_CTL_3_RZ));
453 
454 	chan0_settings =
455 		phy_get_channel_settings(variant->phy_lane_mapping[PHY_LANE_0],
456 					 pixel_freq);
457 	chan1_settings =
458 		phy_get_channel_settings(variant->phy_lane_mapping[PHY_LANE_1],
459 					 pixel_freq);
460 	chan2_settings =
461 		phy_get_channel_settings(variant->phy_lane_mapping[PHY_LANE_2],
462 					 pixel_freq);
463 	clock_settings =
464 		phy_get_channel_settings(variant->phy_lane_mapping[PHY_LANE_CK],
465 					 pixel_freq);
466 
467 	HDMI_WRITE(HDMI_TX_PHY_CTL_0,
468 		   VC4_SET_FIELD(chan0_settings->amplitude.preemphasis,
469 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_PREEMP) |
470 		   VC4_SET_FIELD(chan0_settings->amplitude.main_driver,
471 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_0_MAINDRV) |
472 		   VC4_SET_FIELD(chan1_settings->amplitude.preemphasis,
473 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_PREEMP) |
474 		   VC4_SET_FIELD(chan1_settings->amplitude.main_driver,
475 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_1_MAINDRV) |
476 		   VC4_SET_FIELD(chan2_settings->amplitude.preemphasis,
477 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_PREEMP) |
478 		   VC4_SET_FIELD(chan2_settings->amplitude.main_driver,
479 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_2_MAINDRV) |
480 		   VC4_SET_FIELD(clock_settings->amplitude.preemphasis,
481 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_PREEMP) |
482 		   VC4_SET_FIELD(clock_settings->amplitude.main_driver,
483 				 VC4_HDMI_TX_PHY_CTL_0_PREEMP_CK_MAINDRV));
484 
485 	HDMI_WRITE(HDMI_TX_PHY_CTL_1,
486 		   HDMI_READ(HDMI_TX_PHY_CTL_1) |
487 		   VC4_SET_FIELD(chan0_settings->res_sel_data,
488 				 VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA0) |
489 		   VC4_SET_FIELD(chan1_settings->res_sel_data,
490 				 VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA1) |
491 		   VC4_SET_FIELD(chan2_settings->res_sel_data,
492 				 VC4_HDMI_TX_PHY_CTL_1_RES_SEL_DATA2) |
493 		   VC4_SET_FIELD(clock_settings->res_sel_data,
494 				 VC4_HDMI_TX_PHY_CTL_1_RES_SEL_CK));
495 
496 	HDMI_WRITE(HDMI_TX_PHY_CTL_2,
497 		   VC4_SET_FIELD(chan0_settings->term_res_sel_data,
498 				 VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA0) |
499 		   VC4_SET_FIELD(chan1_settings->term_res_sel_data,
500 				 VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA1) |
501 		   VC4_SET_FIELD(chan2_settings->term_res_sel_data,
502 				 VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELDATA2) |
503 		   VC4_SET_FIELD(clock_settings->term_res_sel_data,
504 				 VC4_HDMI_TX_PHY_CTL_2_TERM_RES_SELCK) |
505 		   VC4_SET_FIELD(phy_get_vco_gain(vco_freq),
506 				 VC4_HDMI_TX_PHY_CTL_2_VCO_GAIN));
507 
508 	HDMI_WRITE(HDMI_TX_PHY_CHANNEL_SWAP,
509 		   VC4_SET_FIELD(variant->phy_lane_mapping[PHY_LANE_0],
510 				 VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX0_OUT_SEL) |
511 		   VC4_SET_FIELD(variant->phy_lane_mapping[PHY_LANE_1],
512 				 VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX1_OUT_SEL) |
513 		   VC4_SET_FIELD(variant->phy_lane_mapping[PHY_LANE_2],
514 				 VC4_HDMI_TX_PHY_CHANNEL_SWAP_TX2_OUT_SEL) |
515 		   VC4_SET_FIELD(variant->phy_lane_mapping[PHY_LANE_CK],
516 				 VC4_HDMI_TX_PHY_CHANNEL_SWAP_TXCK_OUT_SEL));
517 
518 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL,
519 		   HDMI_READ(HDMI_TX_PHY_RESET_CTL) &
520 		   ~(VC4_HDMI_TX_PHY_RESET_CTL_PLL_RESETB |
521 		     VC4_HDMI_TX_PHY_RESET_CTL_PLLDIV_RESETB));
522 
523 	HDMI_WRITE(HDMI_TX_PHY_RESET_CTL,
524 		   HDMI_READ(HDMI_TX_PHY_RESET_CTL) |
525 		   VC4_HDMI_TX_PHY_RESET_CTL_PLL_RESETB |
526 		   VC4_HDMI_TX_PHY_RESET_CTL_PLLDIV_RESETB);
527 
528 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
529 }
530 
vc5_hdmi_phy_disable(struct vc4_hdmi * vc4_hdmi)531 void vc5_hdmi_phy_disable(struct vc4_hdmi *vc4_hdmi)
532 {
533 	unsigned long flags;
534 
535 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
536 	vc5_hdmi_reset_phy(vc4_hdmi);
537 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
538 }
539 
vc5_hdmi_phy_rng_enable(struct vc4_hdmi * vc4_hdmi)540 void vc5_hdmi_phy_rng_enable(struct vc4_hdmi *vc4_hdmi)
541 {
542 	unsigned long flags;
543 
544 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
545 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
546 		   HDMI_READ(HDMI_TX_PHY_POWERDOWN_CTL) &
547 		   ~VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN);
548 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
549 }
550 
vc5_hdmi_phy_rng_disable(struct vc4_hdmi * vc4_hdmi)551 void vc5_hdmi_phy_rng_disable(struct vc4_hdmi *vc4_hdmi)
552 {
553 	unsigned long flags;
554 
555 	spin_lock_irqsave(&vc4_hdmi->hw_lock, flags);
556 	HDMI_WRITE(HDMI_TX_PHY_POWERDOWN_CTL,
557 		   HDMI_READ(HDMI_TX_PHY_POWERDOWN_CTL) |
558 		   VC4_HDMI_TX_PHY_POWERDOWN_CTL_RNDGEN_PWRDN);
559 	spin_unlock_irqrestore(&vc4_hdmi->hw_lock, flags);
560 }
561