1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2016, The Linux Foundation. All rights reserved.
4 * Copyright (C) 2013 Red Hat
5 * Author: Rob Clark <robdclark@gmail.com>
6 */
7
8#include <linux/clk-provider.h>
9#include <linux/delay.h>
10
11#include "hdmi.h"
12
13struct hdmi_pll_8960 {
14 struct platform_device *pdev;
15 struct clk_hw clk_hw;
16 void __iomem *mmio;
17
18 unsigned long pixclk;
19};
20
21#define hw_clk_to_pll(x) container_of(x, struct hdmi_pll_8960, clk_hw)
22
23/*
24 * HDMI PLL:
25 *
26 * To get the parent clock setup properly, we need to plug in hdmi pll
27 * configuration into common-clock-framework.
28 */
29
30struct pll_rate {
31 unsigned long rate;
32 int num_reg;
33 struct {
34 u32 val;
35 u32 reg;
36 } conf[32];
37};
38
39/* NOTE: keep sorted highest freq to lowest: */
40static const struct pll_rate freqtbl[] = {
41 { 154000000, 14, {
42 { 0x08, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
43 { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
44 { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
45 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
46 { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
47 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
48 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
49 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
50 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
51 { 0x0d, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
52 { 0x4d, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
53 { 0x5e, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
54 { 0x42, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
55 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
56 }
57 },
58 /* 1080p60/1080p50 case */
59 { 148500000, 27, {
60 { 0x02, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
61 { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
62 { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
63 { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
64 { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
65 { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
66 { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
67 { 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
68 { 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
69 { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
70 { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
71 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
72 { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
73 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
74 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
75 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
76 { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
77 { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
78 { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
79 { 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
80 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
81 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
82 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
83 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
84 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
85 { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
86 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
87 }
88 },
89 { 108000000, 13, {
90 { 0x08, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
91 { 0x21, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
92 { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
93 { 0x1c, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
94 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
95 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
96 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
97 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
98 { 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
99 { 0x49, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
100 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
101 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
102 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
103 }
104 },
105 /* 720p60/720p50/1080i60/1080i50/1080p24/1080p30/1080p25 */
106 { 74250000, 8, {
107 { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
108 { 0x12, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
109 { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
110 { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
111 { 0x76, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
112 { 0xe6, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
113 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
114 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
115 }
116 },
117 { 74176000, 14, {
118 { 0x18, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
119 { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
120 { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
121 { 0xe5, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
122 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
123 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
124 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
125 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
126 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
127 { 0x0c, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
128 { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
129 { 0x7d, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
130 { 0xbc, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
131 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
132 }
133 },
134 { 65000000, 14, {
135 { 0x18, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
136 { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
137 { 0xf9, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
138 { 0x8a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
139 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
140 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
141 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
142 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
143 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
144 { 0x0b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
145 { 0x4b, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
146 { 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
147 { 0x09, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
148 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
149 }
150 },
151 /* 480p60/480i60 */
152 { 27030000, 18, {
153 { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
154 { 0x38, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
155 { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
156 { 0x20, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
157 { 0xff, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
158 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
159 { 0x4e, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
160 { 0xd7, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
161 { 0x03, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
162 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
163 { 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
164 { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
165 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
166 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
167 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
168 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
169 { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
170 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
171 }
172 },
173 /* 576p50/576i50 */
174 { 27000000, 27, {
175 { 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
176 { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
177 { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
178 { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
179 { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
180 { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
181 { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
182 { 0x7b, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
183 { 0x01, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
184 { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
185 { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
186 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
187 { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
188 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
189 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
190 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
191 { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
192 { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
193 { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
194 { 0x2a, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
195 { 0x03, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
196 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
197 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
198 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
199 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
200 { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
201 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
202 }
203 },
204 /* 640x480p60 */
205 { 25200000, 27, {
206 { 0x32, REG_HDMI_8960_PHY_PLL_REFCLK_CFG },
207 { 0x02, REG_HDMI_8960_PHY_PLL_CHRG_PUMP_CFG },
208 { 0x01, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG0 },
209 { 0x33, REG_HDMI_8960_PHY_PLL_LOOP_FLT_CFG1 },
210 { 0x2c, REG_HDMI_8960_PHY_PLL_IDAC_ADJ_CFG },
211 { 0x06, REG_HDMI_8960_PHY_PLL_I_VI_KVCO_CFG },
212 { 0x0a, REG_HDMI_8960_PHY_PLL_PWRDN_B },
213 { 0x77, REG_HDMI_8960_PHY_PLL_SDM_CFG0 },
214 { 0x4c, REG_HDMI_8960_PHY_PLL_SDM_CFG1 },
215 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG2 },
216 { 0xc0, REG_HDMI_8960_PHY_PLL_SDM_CFG3 },
217 { 0x00, REG_HDMI_8960_PHY_PLL_SDM_CFG4 },
218 { 0x9a, REG_HDMI_8960_PHY_PLL_SSC_CFG0 },
219 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG1 },
220 { 0x00, REG_HDMI_8960_PHY_PLL_SSC_CFG2 },
221 { 0x20, REG_HDMI_8960_PHY_PLL_SSC_CFG3 },
222 { 0x10, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0 },
223 { 0x1a, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1 },
224 { 0x0d, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2 },
225 { 0xf4, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG0 },
226 { 0x02, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG1 },
227 { 0x3b, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG2 },
228 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG3 },
229 { 0x86, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG4 },
230 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG5 },
231 { 0x33, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG6 },
232 { 0x00, REG_HDMI_8960_PHY_PLL_VCOCAL_CFG7 },
233 }
234 },
235};
236
237static inline void pll_write(struct hdmi_pll_8960 *pll, u32 reg, u32 data)
238{
239 msm_writel(data, pll->mmio + reg);
240}
241
242static inline u32 pll_read(struct hdmi_pll_8960 *pll, u32 reg)
243{
244 return msm_readl(pll->mmio + reg);
245}
246
247static inline struct hdmi_phy *pll_get_phy(struct hdmi_pll_8960 *pll)
248{
249 return platform_get_drvdata(pdev: pll->pdev);
250}
251
252static int hdmi_pll_enable(struct clk_hw *hw)
253{
254 struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw);
255 struct hdmi_phy *phy = pll_get_phy(pll);
256 int timeout_count, pll_lock_retry = 10;
257 unsigned int val;
258
259 DBG("");
260
261 /* Assert PLL S/W reset */
262 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, data: 0x8d);
263 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG0, data: 0x10);
264 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG1, data: 0x1a);
265
266 /* Wait for a short time before de-asserting
267 * to allow the hardware to complete its job.
268 * This much of delay should be fine for hardware
269 * to assert and de-assert.
270 */
271 udelay(10);
272
273 /* De-assert PLL S/W reset */
274 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, data: 0x0d);
275
276 val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12);
277 val |= HDMI_8960_PHY_REG12_SW_RESET;
278 /* Assert PHY S/W reset */
279 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, data: val);
280 val &= ~HDMI_8960_PHY_REG12_SW_RESET;
281 /*
282 * Wait for a short time before de-asserting to allow the hardware to
283 * complete its job. This much of delay should be fine for hardware to
284 * assert and de-assert.
285 */
286 udelay(10);
287 /* De-assert PHY S/W reset */
288 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, data: val);
289 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG2, data: 0x3f);
290
291 val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12);
292 val |= HDMI_8960_PHY_REG12_PWRDN_B;
293 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, data: val);
294 /* Wait 10 us for enabling global power for PHY */
295 mb();
296 udelay(10);
297
298 val = pll_read(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B);
299 val |= HDMI_8960_PHY_PLL_PWRDN_B_PLL_PWRDN_B;
300 val &= ~HDMI_8960_PHY_PLL_PWRDN_B_PD_PLL;
301 pll_write(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B, data: val);
302 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG2, data: 0x80);
303
304 timeout_count = 1000;
305 while (--pll_lock_retry > 0) {
306 /* are we there yet? */
307 val = pll_read(pll, REG_HDMI_8960_PHY_PLL_STATUS0);
308 if (val & HDMI_8960_PHY_PLL_STATUS0_PLL_LOCK)
309 break;
310
311 udelay(1);
312
313 if (--timeout_count > 0)
314 continue;
315
316 /*
317 * PLL has still not locked.
318 * Do a software reset and try again
319 * Assert PLL S/W reset first
320 */
321 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, data: 0x8d);
322 udelay(10);
323 pll_write(pll, REG_HDMI_8960_PHY_PLL_LOCKDET_CFG2, data: 0x0d);
324
325 /*
326 * Wait for a short duration for the PLL calibration
327 * before checking if the PLL gets locked
328 */
329 udelay(350);
330
331 timeout_count = 1000;
332 }
333
334 return 0;
335}
336
337static void hdmi_pll_disable(struct clk_hw *hw)
338{
339 struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw);
340 struct hdmi_phy *phy = pll_get_phy(pll);
341 unsigned int val;
342
343 DBG("");
344
345 val = hdmi_phy_read(phy, REG_HDMI_8960_PHY_REG12);
346 val &= ~HDMI_8960_PHY_REG12_PWRDN_B;
347 hdmi_phy_write(phy, REG_HDMI_8960_PHY_REG12, data: val);
348
349 val = pll_read(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B);
350 val |= HDMI_8960_PHY_REG12_SW_RESET;
351 val &= ~HDMI_8960_PHY_REG12_PWRDN_B;
352 pll_write(pll, REG_HDMI_8960_PHY_PLL_PWRDN_B, data: val);
353 /* Make sure HDMI PHY/PLL are powered down */
354 mb();
355}
356
357static const struct pll_rate *find_rate(unsigned long rate)
358{
359 int i;
360
361 for (i = 1; i < ARRAY_SIZE(freqtbl); i++)
362 if (rate > freqtbl[i].rate)
363 return &freqtbl[i - 1];
364
365 return &freqtbl[i - 1];
366}
367
368static unsigned long hdmi_pll_recalc_rate(struct clk_hw *hw,
369 unsigned long parent_rate)
370{
371 struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw);
372
373 return pll->pixclk;
374}
375
376static long hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
377 unsigned long *parent_rate)
378{
379 const struct pll_rate *pll_rate = find_rate(rate);
380
381 return pll_rate->rate;
382}
383
384static int hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
385 unsigned long parent_rate)
386{
387 struct hdmi_pll_8960 *pll = hw_clk_to_pll(hw);
388 const struct pll_rate *pll_rate = find_rate(rate);
389 int i;
390
391 DBG("rate=%lu", rate);
392
393 for (i = 0; i < pll_rate->num_reg; i++)
394 pll_write(pll, reg: pll_rate->conf[i].reg, data: pll_rate->conf[i].val);
395
396 pll->pixclk = rate;
397
398 return 0;
399}
400
401static const struct clk_ops hdmi_pll_ops = {
402 .enable = hdmi_pll_enable,
403 .disable = hdmi_pll_disable,
404 .recalc_rate = hdmi_pll_recalc_rate,
405 .round_rate = hdmi_pll_round_rate,
406 .set_rate = hdmi_pll_set_rate,
407};
408
409static const struct clk_parent_data hdmi_pll_parents[] = {
410 { .fw_name = "pxo", .name = "pxo_board" },
411};
412
413static struct clk_init_data pll_init = {
414 .name = "hdmi_pll",
415 .ops = &hdmi_pll_ops,
416 .parent_data = hdmi_pll_parents,
417 .num_parents = ARRAY_SIZE(hdmi_pll_parents),
418 .flags = CLK_IGNORE_UNUSED,
419};
420
421int msm_hdmi_pll_8960_init(struct platform_device *pdev)
422{
423 struct device *dev = &pdev->dev;
424 struct hdmi_pll_8960 *pll;
425 int i, ret;
426
427 /* sanity check: */
428 for (i = 0; i < (ARRAY_SIZE(freqtbl) - 1); i++)
429 if (WARN_ON(freqtbl[i].rate < freqtbl[i + 1].rate))
430 return -EINVAL;
431
432 pll = devm_kzalloc(dev, size: sizeof(*pll), GFP_KERNEL);
433 if (!pll)
434 return -ENOMEM;
435
436 pll->mmio = msm_ioremap(pdev, "hdmi_pll");
437 if (IS_ERR(ptr: pll->mmio)) {
438 DRM_DEV_ERROR(dev, "failed to map pll base\n");
439 return -ENOMEM;
440 }
441
442 pll->pdev = pdev;
443 pll->clk_hw.init = &pll_init;
444
445 ret = devm_clk_hw_register(dev, hw: &pll->clk_hw);
446 if (ret < 0) {
447 DRM_DEV_ERROR(dev, "failed to register pll clock\n");
448 return ret;
449 }
450
451 ret = devm_of_clk_add_hw_provider(dev, get: of_clk_hw_simple_get, data: &pll->clk_hw);
452 if (ret) {
453 DRM_DEV_ERROR(dev, "%s: failed to register clk provider: %d\n", __func__, ret);
454 return ret;
455 }
456
457 return 0;
458}
459

source code of linux/drivers/gpu/drm/msm/hdmi/hdmi_pll_8960.c