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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 2017 Rockchip Electronics Co. Ltd.
4 *
5 * Author: Zheng Yang <zhengyang@rock-chips.com>
6 * Heiko Stuebner <heiko@sntech.de>
7 */
8
9#include <linux/clk.h>
10#include <linux/clk-provider.h>
11#include <linux/delay.h>
12#include <linux/io.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/module.h>
16#include <linux/nvmem-consumer.h>
17#include <linux/of.h>
18#include <linux/of_device.h>
19#include <linux/platform_device.h>
20#include <linux/regmap.h>
21#include <linux/phy/phy.h>
22#include <linux/slab.h>
23
24#define UPDATE(x, h, l) (((x) << (l)) & GENMASK((h), (l)))
25
26/* REG: 0x00 */
27#define RK3228_PRE_PLL_REFCLK_SEL_PCLK BIT(0)
28/* REG: 0x01 */
29#define RK3228_BYPASS_RXSENSE_EN BIT(2)
30#define RK3228_BYPASS_PWRON_EN BIT(1)
31#define RK3228_BYPASS_PLLPD_EN BIT(0)
32/* REG: 0x02 */
33#define RK3228_BYPASS_PDATA_EN BIT(4)
34#define RK3228_PDATAEN_DISABLE BIT(0)
35/* REG: 0x03 */
36#define RK3228_BYPASS_AUTO_TERM_RES_CAL BIT(7)
37#define RK3228_AUTO_TERM_RES_CAL_SPEED_14_8(x) UPDATE(x, 6, 0)
38/* REG: 0x04 */
39#define RK3228_AUTO_TERM_RES_CAL_SPEED_7_0(x) UPDATE(x, 7, 0)
40/* REG: 0xaa */
41#define RK3228_POST_PLL_CTRL_MANUAL BIT(0)
42/* REG: 0xe0 */
43#define RK3228_POST_PLL_POWER_DOWN BIT(5)
44#define RK3228_PRE_PLL_POWER_DOWN BIT(4)
45#define RK3228_RXSENSE_CLK_CH_ENABLE BIT(3)
46#define RK3228_RXSENSE_DATA_CH2_ENABLE BIT(2)
47#define RK3228_RXSENSE_DATA_CH1_ENABLE BIT(1)
48#define RK3228_RXSENSE_DATA_CH0_ENABLE BIT(0)
49/* REG: 0xe1 */
50#define RK3228_BANDGAP_ENABLE BIT(4)
51#define RK3228_TMDS_DRIVER_ENABLE GENMASK(3, 0)
52/* REG: 0xe2 */
53#define RK3228_PRE_PLL_FB_DIV_8_MASK BIT(7)
54#define RK3228_PRE_PLL_FB_DIV_8(x) UPDATE((x) >> 8, 7, 7)
55#define RK3228_PCLK_VCO_DIV_5_MASK BIT(5)
56#define RK3228_PCLK_VCO_DIV_5(x) UPDATE(x, 5, 5)
57#define RK3228_PRE_PLL_PRE_DIV_MASK GENMASK(4, 0)
58#define RK3228_PRE_PLL_PRE_DIV(x) UPDATE(x, 4, 0)
59/* REG: 0xe3 */
60#define RK3228_PRE_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0)
61/* REG: 0xe4 */
62#define RK3228_PRE_PLL_PCLK_DIV_B_MASK GENMASK(6, 5)
63#define RK3228_PRE_PLL_PCLK_DIV_B_SHIFT 5
64#define RK3228_PRE_PLL_PCLK_DIV_B(x) UPDATE(x, 6, 5)
65#define RK3228_PRE_PLL_PCLK_DIV_A_MASK GENMASK(4, 0)
66#define RK3228_PRE_PLL_PCLK_DIV_A(x) UPDATE(x, 4, 0)
67/* REG: 0xe5 */
68#define RK3228_PRE_PLL_PCLK_DIV_C_MASK GENMASK(6, 5)
69#define RK3228_PRE_PLL_PCLK_DIV_C(x) UPDATE(x, 6, 5)
70#define RK3228_PRE_PLL_PCLK_DIV_D_MASK GENMASK(4, 0)
71#define RK3228_PRE_PLL_PCLK_DIV_D(x) UPDATE(x, 4, 0)
72/* REG: 0xe6 */
73#define RK3228_PRE_PLL_TMDSCLK_DIV_C_MASK GENMASK(5, 4)
74#define RK3228_PRE_PLL_TMDSCLK_DIV_C(x) UPDATE(x, 5, 4)
75#define RK3228_PRE_PLL_TMDSCLK_DIV_A_MASK GENMASK(3, 2)
76#define RK3228_PRE_PLL_TMDSCLK_DIV_A(x) UPDATE(x, 3, 2)
77#define RK3228_PRE_PLL_TMDSCLK_DIV_B_MASK GENMASK(1, 0)
78#define RK3228_PRE_PLL_TMDSCLK_DIV_B(x) UPDATE(x, 1, 0)
79/* REG: 0xe8 */
80#define RK3228_PRE_PLL_LOCK_STATUS BIT(0)
81/* REG: 0xe9 */
82#define RK3228_POST_PLL_POST_DIV_ENABLE UPDATE(3, 7, 6)
83#define RK3228_POST_PLL_PRE_DIV_MASK GENMASK(4, 0)
84#define RK3228_POST_PLL_PRE_DIV(x) UPDATE(x, 4, 0)
85/* REG: 0xea */
86#define RK3228_POST_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0)
87/* REG: 0xeb */
88#define RK3228_POST_PLL_FB_DIV_8_MASK BIT(7)
89#define RK3228_POST_PLL_FB_DIV_8(x) UPDATE((x) >> 8, 7, 7)
90#define RK3228_POST_PLL_POST_DIV_MASK GENMASK(5, 4)
91#define RK3228_POST_PLL_POST_DIV(x) UPDATE(x, 5, 4)
92#define RK3228_POST_PLL_LOCK_STATUS BIT(0)
93/* REG: 0xee */
94#define RK3228_TMDS_CH_TA_ENABLE GENMASK(7, 4)
95/* REG: 0xef */
96#define RK3228_TMDS_CLK_CH_TA(x) UPDATE(x, 7, 6)
97#define RK3228_TMDS_DATA_CH2_TA(x) UPDATE(x, 5, 4)
98#define RK3228_TMDS_DATA_CH1_TA(x) UPDATE(x, 3, 2)
99#define RK3228_TMDS_DATA_CH0_TA(x) UPDATE(x, 1, 0)
100/* REG: 0xf0 */
101#define RK3228_TMDS_DATA_CH2_PRE_EMPHASIS_MASK GENMASK(5, 4)
102#define RK3228_TMDS_DATA_CH2_PRE_EMPHASIS(x) UPDATE(x, 5, 4)
103#define RK3228_TMDS_DATA_CH1_PRE_EMPHASIS_MASK GENMASK(3, 2)
104#define RK3228_TMDS_DATA_CH1_PRE_EMPHASIS(x) UPDATE(x, 3, 2)
105#define RK3228_TMDS_DATA_CH0_PRE_EMPHASIS_MASK GENMASK(1, 0)
106#define RK3228_TMDS_DATA_CH0_PRE_EMPHASIS(x) UPDATE(x, 1, 0)
107/* REG: 0xf1 */
108#define RK3228_TMDS_CLK_CH_OUTPUT_SWING(x) UPDATE(x, 7, 4)
109#define RK3228_TMDS_DATA_CH2_OUTPUT_SWING(x) UPDATE(x, 3, 0)
110/* REG: 0xf2 */
111#define RK3228_TMDS_DATA_CH1_OUTPUT_SWING(x) UPDATE(x, 7, 4)
112#define RK3228_TMDS_DATA_CH0_OUTPUT_SWING(x) UPDATE(x, 3, 0)
113
114/* REG: 0x01 */
115#define RK3328_BYPASS_RXSENSE_EN BIT(2)
116#define RK3328_BYPASS_POWERON_EN BIT(1)
117#define RK3328_BYPASS_PLLPD_EN BIT(0)
118/* REG: 0x02 */
119#define RK3328_INT_POL_HIGH BIT(7)
120#define RK3328_BYPASS_PDATA_EN BIT(4)
121#define RK3328_PDATA_EN BIT(0)
122/* REG:0x05 */
123#define RK3328_INT_TMDS_CLK(x) UPDATE(x, 7, 4)
124#define RK3328_INT_TMDS_D2(x) UPDATE(x, 3, 0)
125/* REG:0x07 */
126#define RK3328_INT_TMDS_D1(x) UPDATE(x, 7, 4)
127#define RK3328_INT_TMDS_D0(x) UPDATE(x, 3, 0)
128/* for all RK3328_INT_TMDS_*, ESD_DET as defined in 0xc8-0xcb */
129#define RK3328_INT_AGND_LOW_PULSE_LOCKED BIT(3)
130#define RK3328_INT_RXSENSE_LOW_PULSE_LOCKED BIT(2)
131#define RK3328_INT_VSS_AGND_ESD_DET BIT(1)
132#define RK3328_INT_AGND_VSS_ESD_DET BIT(0)
133/* REG: 0xa0 */
134#define RK3328_PCLK_VCO_DIV_5_MASK BIT(1)
135#define RK3328_PCLK_VCO_DIV_5(x) UPDATE(x, 1, 1)
136#define RK3328_PRE_PLL_POWER_DOWN BIT(0)
137/* REG: 0xa1 */
138#define RK3328_PRE_PLL_PRE_DIV_MASK GENMASK(5, 0)
139#define RK3328_PRE_PLL_PRE_DIV(x) UPDATE(x, 5, 0)
140/* REG: 0xa2 */
141/* unset means center spread */
142#define RK3328_SPREAD_SPECTRUM_MOD_DOWN BIT(7)
143#define RK3328_SPREAD_SPECTRUM_MOD_DISABLE BIT(6)
144#define RK3328_PRE_PLL_FRAC_DIV_DISABLE UPDATE(3, 5, 4)
145#define RK3328_PRE_PLL_FB_DIV_11_8_MASK GENMASK(3, 0)
146#define RK3328_PRE_PLL_FB_DIV_11_8(x) UPDATE((x) >> 8, 3, 0)
147/* REG: 0xa3 */
148#define RK3328_PRE_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0)
149/* REG: 0xa4*/
150#define RK3328_PRE_PLL_TMDSCLK_DIV_C_MASK GENMASK(1, 0)
151#define RK3328_PRE_PLL_TMDSCLK_DIV_C(x) UPDATE(x, 1, 0)
152#define RK3328_PRE_PLL_TMDSCLK_DIV_B_MASK GENMASK(3, 2)
153#define RK3328_PRE_PLL_TMDSCLK_DIV_B(x) UPDATE(x, 3, 2)
154#define RK3328_PRE_PLL_TMDSCLK_DIV_A_MASK GENMASK(5, 4)
155#define RK3328_PRE_PLL_TMDSCLK_DIV_A(x) UPDATE(x, 5, 4)
156/* REG: 0xa5 */
157#define RK3328_PRE_PLL_PCLK_DIV_B_SHIFT 5
158#define RK3328_PRE_PLL_PCLK_DIV_B_MASK GENMASK(6, 5)
159#define RK3328_PRE_PLL_PCLK_DIV_B(x) UPDATE(x, 6, 5)
160#define RK3328_PRE_PLL_PCLK_DIV_A_MASK GENMASK(4, 0)
161#define RK3328_PRE_PLL_PCLK_DIV_A(x) UPDATE(x, 4, 0)
162/* REG: 0xa6 */
163#define RK3328_PRE_PLL_PCLK_DIV_C_SHIFT 5
164#define RK3328_PRE_PLL_PCLK_DIV_C_MASK GENMASK(6, 5)
165#define RK3328_PRE_PLL_PCLK_DIV_C(x) UPDATE(x, 6, 5)
166#define RK3328_PRE_PLL_PCLK_DIV_D_MASK GENMASK(4, 0)
167#define RK3328_PRE_PLL_PCLK_DIV_D(x) UPDATE(x, 4, 0)
168/* REG: 0xa9 */
169#define RK3328_PRE_PLL_LOCK_STATUS BIT(0)
170/* REG: 0xaa */
171#define RK3328_POST_PLL_POST_DIV_ENABLE GENMASK(3, 2)
172#define RK3328_POST_PLL_REFCLK_SEL_TMDS BIT(1)
173#define RK3328_POST_PLL_POWER_DOWN BIT(0)
174/* REG:0xab */
175#define RK3328_POST_PLL_FB_DIV_8(x) UPDATE((x) >> 8, 7, 7)
176#define RK3328_POST_PLL_PRE_DIV(x) UPDATE(x, 4, 0)
177/* REG: 0xac */
178#define RK3328_POST_PLL_FB_DIV_7_0(x) UPDATE(x, 7, 0)
179/* REG: 0xad */
180#define RK3328_POST_PLL_POST_DIV_MASK GENMASK(1, 0)
181#define RK3328_POST_PLL_POST_DIV_2 0x0
182#define RK3328_POST_PLL_POST_DIV_4 0x1
183#define RK3328_POST_PLL_POST_DIV_8 0x3
184/* REG: 0xaf */
185#define RK3328_POST_PLL_LOCK_STATUS BIT(0)
186/* REG: 0xb0 */
187#define RK3328_BANDGAP_ENABLE BIT(2)
188/* REG: 0xb2 */
189#define RK3328_TMDS_CLK_DRIVER_EN BIT(3)
190#define RK3328_TMDS_D2_DRIVER_EN BIT(2)
191#define RK3328_TMDS_D1_DRIVER_EN BIT(1)
192#define RK3328_TMDS_D0_DRIVER_EN BIT(0)
193#define RK3328_TMDS_DRIVER_ENABLE (RK3328_TMDS_CLK_DRIVER_EN | \
194 RK3328_TMDS_D2_DRIVER_EN | \
195 RK3328_TMDS_D1_DRIVER_EN | \
196 RK3328_TMDS_D0_DRIVER_EN)
197/* REG:0xc5 */
198#define RK3328_BYPASS_TERM_RESISTOR_CALIB BIT(7)
199#define RK3328_TERM_RESISTOR_CALIB_SPEED_14_8(x) UPDATE((x) >> 8, 6, 0)
200/* REG:0xc6 */
201#define RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(x) UPDATE(x, 7, 0)
202/* REG:0xc7 */
203#define RK3328_TERM_RESISTOR_50 UPDATE(0, 2, 1)
204#define RK3328_TERM_RESISTOR_62_5 UPDATE(1, 2, 1)
205#define RK3328_TERM_RESISTOR_75 UPDATE(2, 2, 1)
206#define RK3328_TERM_RESISTOR_100 UPDATE(3, 2, 1)
207/* REG 0xc8 - 0xcb */
208#define RK3328_ESD_DETECT_MASK GENMASK(7, 6)
209#define RK3328_ESD_DETECT_340MV (0x0 << 6)
210#define RK3328_ESD_DETECT_280MV (0x1 << 6)
211#define RK3328_ESD_DETECT_260MV (0x2 << 6)
212#define RK3328_ESD_DETECT_240MV (0x3 << 6)
213/* resistors can be used in parallel */
214#define RK3328_TMDS_TERM_RESIST_MASK GENMASK(5, 0)
215#define RK3328_TMDS_TERM_RESIST_75 BIT(5)
216#define RK3328_TMDS_TERM_RESIST_150 BIT(4)
217#define RK3328_TMDS_TERM_RESIST_300 BIT(3)
218#define RK3328_TMDS_TERM_RESIST_600 BIT(2)
219#define RK3328_TMDS_TERM_RESIST_1000 BIT(1)
220#define RK3328_TMDS_TERM_RESIST_2000 BIT(0)
221/* REG: 0xd1 */
222#define RK3328_PRE_PLL_FRAC_DIV_23_16(x) UPDATE((x) >> 16, 7, 0)
223/* REG: 0xd2 */
224#define RK3328_PRE_PLL_FRAC_DIV_15_8(x) UPDATE((x) >> 8, 7, 0)
225/* REG: 0xd3 */
226#define RK3328_PRE_PLL_FRAC_DIV_7_0(x) UPDATE(x, 7, 0)
227
228struct inno_hdmi_phy_drv_data;
229
230struct inno_hdmi_phy {
231 struct device *dev;
232 struct regmap *regmap;
233 int irq;
234
235 struct phy *phy;
236 struct clk *sysclk;
237 struct clk *refoclk;
238 struct clk *refpclk;
239
240 /* platform data */
241 const struct inno_hdmi_phy_drv_data *plat_data;
242 int chip_version;
243
244 /* clk provider */
245 struct clk_hw hw;
246 struct clk *phyclk;
247 unsigned long pixclock;
248};
249
250struct pre_pll_config {
251 unsigned long pixclock;
252 unsigned long tmdsclock;
253 u8 prediv;
254 u16 fbdiv;
255 u8 tmds_div_a;
256 u8 tmds_div_b;
257 u8 tmds_div_c;
258 u8 pclk_div_a;
259 u8 pclk_div_b;
260 u8 pclk_div_c;
261 u8 pclk_div_d;
262 u8 vco_div_5_en;
263 u32 fracdiv;
264};
265
266struct post_pll_config {
267 unsigned long tmdsclock;
268 u8 prediv;
269 u16 fbdiv;
270 u8 postdiv;
271 u8 version;
272};
273
274struct phy_config {
275 unsigned long tmdsclock;
276 u8 regs[14];
277};
278
279struct inno_hdmi_phy_ops {
280 int (*init)(struct inno_hdmi_phy *inno);
281 int (*power_on)(struct inno_hdmi_phy *inno,
282 const struct post_pll_config *cfg,
283 const struct phy_config *phy_cfg);
284 void (*power_off)(struct inno_hdmi_phy *inno);
285};
286
287struct inno_hdmi_phy_drv_data {
288 const struct inno_hdmi_phy_ops *ops;
289 const struct clk_ops *clk_ops;
290 const struct phy_config *phy_cfg_table;
291};
292
293static const struct pre_pll_config pre_pll_cfg_table[] = {
294 { 27000000, 27000000, 1, 90, 3, 2, 2, 10, 3, 3, 4, 0, 0},
295 { 27000000, 33750000, 1, 90, 1, 3, 3, 10, 3, 3, 4, 0, 0},
296 { 40000000, 40000000, 1, 80, 2, 2, 2, 12, 2, 2, 2, 0, 0},
297 { 59341000, 59341000, 1, 98, 3, 1, 2, 1, 3, 3, 4, 0, 0xE6AE6B},
298 { 59400000, 59400000, 1, 99, 3, 1, 1, 1, 3, 3, 4, 0, 0},
299 { 59341000, 74176250, 1, 98, 0, 3, 3, 1, 3, 3, 4, 0, 0xE6AE6B},
300 { 59400000, 74250000, 1, 99, 1, 2, 2, 1, 3, 3, 4, 0, 0},
301 { 74176000, 74176000, 1, 98, 1, 2, 2, 1, 2, 3, 4, 0, 0xE6AE6B},
302 { 74250000, 74250000, 1, 99, 1, 2, 2, 1, 2, 3, 4, 0, 0},
303 { 74176000, 92720000, 4, 494, 1, 2, 2, 1, 3, 3, 4, 0, 0x816817},
304 { 74250000, 92812500, 4, 495, 1, 2, 2, 1, 3, 3, 4, 0, 0},
305 {148352000, 148352000, 1, 98, 1, 1, 1, 1, 2, 2, 2, 0, 0xE6AE6B},
306 {148500000, 148500000, 1, 99, 1, 1, 1, 1, 2, 2, 2, 0, 0},
307 {148352000, 185440000, 4, 494, 0, 2, 2, 1, 3, 2, 2, 0, 0x816817},
308 {148500000, 185625000, 4, 495, 0, 2, 2, 1, 3, 2, 2, 0, 0},
309 {296703000, 296703000, 1, 98, 0, 1, 1, 1, 0, 2, 2, 0, 0xE6AE6B},
310 {297000000, 297000000, 1, 99, 0, 1, 1, 1, 0, 2, 2, 0, 0},
311 {296703000, 370878750, 4, 494, 1, 2, 0, 1, 3, 1, 1, 0, 0x816817},
312 {297000000, 371250000, 4, 495, 1, 2, 0, 1, 3, 1, 1, 0, 0},
313 {593407000, 296703500, 1, 98, 0, 1, 1, 1, 0, 2, 1, 0, 0xE6AE6B},
314 {594000000, 297000000, 1, 99, 0, 1, 1, 1, 0, 2, 1, 0, 0},
315 {593407000, 370879375, 4, 494, 1, 2, 0, 1, 3, 1, 1, 1, 0x816817},
316 {594000000, 371250000, 4, 495, 1, 2, 0, 1, 3, 1, 1, 1, 0},
317 {593407000, 593407000, 1, 98, 0, 2, 0, 1, 0, 1, 1, 0, 0xE6AE6B},
318 {594000000, 594000000, 1, 99, 0, 2, 0, 1, 0, 1, 1, 0, 0},
319 { /* sentinel */ }
320};
321
322static const struct post_pll_config post_pll_cfg_table[] = {
323 {33750000, 1, 40, 8, 1},
324 {33750000, 1, 80, 8, 2},
325 {74250000, 1, 40, 8, 1},
326 {74250000, 18, 80, 8, 2},
327 {148500000, 2, 40, 4, 3},
328 {297000000, 4, 40, 2, 3},
329 {594000000, 8, 40, 1, 3},
330 { /* sentinel */ }
331};
332
333/* phy tuning values for an undocumented set of registers */
334static const struct phy_config rk3228_phy_cfg[] = {
335 { 165000000, {
336 0xaa, 0x00, 0x44, 0x44, 0x00, 0x00, 0x00, 0x00, 0x00,
337 0x00, 0x00, 0x00, 0x00, 0x00,
338 },
339 }, {
340 340000000, {
341 0xaa, 0x15, 0x6a, 0xaa, 0x00, 0x00, 0x00, 0x00, 0x00,
342 0x00, 0x00, 0x00, 0x00, 0x00,
343 },
344 }, {
345 594000000, {
346 0xaa, 0x15, 0x7a, 0xaa, 0x00, 0x00, 0x00, 0x00, 0x00,
347 0x00, 0x00, 0x00, 0x00, 0x00,
348 },
349 }, { /* sentinel */ },
350};
351
352/* phy tuning values for an undocumented set of registers */
353static const struct phy_config rk3328_phy_cfg[] = {
354 { 165000000, {
355 0x07, 0x0a, 0x0a, 0x0a, 0x00, 0x00, 0x08, 0x08, 0x08,
356 0x00, 0xac, 0xcc, 0xcc, 0xcc,
357 },
358 }, {
359 340000000, {
360 0x0b, 0x0d, 0x0d, 0x0d, 0x07, 0x15, 0x08, 0x08, 0x08,
361 0x3f, 0xac, 0xcc, 0xcd, 0xdd,
362 },
363 }, {
364 594000000, {
365 0x10, 0x1a, 0x1a, 0x1a, 0x07, 0x15, 0x08, 0x08, 0x08,
366 0x00, 0xac, 0xcc, 0xcc, 0xcc,
367 },
368 }, { /* sentinel */ },
369};
370
371static inline struct inno_hdmi_phy *to_inno_hdmi_phy(struct clk_hw *hw)
372{
373 return container_of(hw, struct inno_hdmi_phy, hw);
374}
375
376/*
377 * The register description of the IP block does not use any distinct names
378 * but instead the databook simply numbers the registers in one-increments.
379 * As the registers are obviously 32bit sized, the inno_* functions
380 * translate the databook register names to the actual registers addresses.
381 */
382static inline void inno_write(struct inno_hdmi_phy *inno, u32 reg, u8 val)
383{
384 regmap_write(inno->regmap, reg * 4, val);
385}
386
387static inline u8 inno_read(struct inno_hdmi_phy *inno, u32 reg)
388{
389 u32 val;
390
391 regmap_read(inno->regmap, reg * 4, &val);
392
393 return val;
394}
395
396static inline void inno_update_bits(struct inno_hdmi_phy *inno, u8 reg,
397 u8 mask, u8 val)
398{
399 regmap_update_bits(inno->regmap, reg * 4, mask, val);
400}
401
402#define inno_poll(inno, reg, val, cond, sleep_us, timeout_us) \
403 regmap_read_poll_timeout((inno)->regmap, (reg) * 4, val, cond, \
404 sleep_us, timeout_us)
405
406static unsigned long inno_hdmi_phy_get_tmdsclk(struct inno_hdmi_phy *inno,
407 unsigned long rate)
408{
409 int bus_width = phy_get_bus_width(inno->phy);
410
411 switch (bus_width) {
412 case 4:
413 case 5:
414 case 6:
415 case 10:
416 case 12:
417 case 16:
418 return (u64)rate * bus_width / 8;
419 default:
420 return rate;
421 }
422}
423
424static irqreturn_t inno_hdmi_phy_rk3328_hardirq(int irq, void *dev_id)
425{
426 struct inno_hdmi_phy *inno = dev_id;
427 int intr_stat1, intr_stat2, intr_stat3;
428
429 intr_stat1 = inno_read(inno, 0x04);
430 intr_stat2 = inno_read(inno, 0x06);
431 intr_stat3 = inno_read(inno, 0x08);
432
433 if (intr_stat1)
434 inno_write(inno, 0x04, intr_stat1);
435 if (intr_stat2)
436 inno_write(inno, 0x06, intr_stat2);
437 if (intr_stat3)
438 inno_write(inno, 0x08, intr_stat3);
439
440 if (intr_stat1 || intr_stat2 || intr_stat3)
441 return IRQ_WAKE_THREAD;
442
443 return IRQ_HANDLED;
444}
445
446static irqreturn_t inno_hdmi_phy_rk3328_irq(int irq, void *dev_id)
447{
448 struct inno_hdmi_phy *inno = dev_id;
449
450 inno_update_bits(inno, 0x02, RK3328_PDATA_EN, 0);
451 usleep_range(10, 20);
452 inno_update_bits(inno, 0x02, RK3328_PDATA_EN, RK3328_PDATA_EN);
453
454 return IRQ_HANDLED;
455}
456
457static int inno_hdmi_phy_power_on(struct phy *phy)
458{
459 struct inno_hdmi_phy *inno = phy_get_drvdata(phy);
460 const struct post_pll_config *cfg = post_pll_cfg_table;
461 const struct phy_config *phy_cfg = inno->plat_data->phy_cfg_table;
462 unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno,
463 inno->pixclock);
464 int ret;
465
466 if (!tmdsclock) {
467 dev_err(inno->dev, "TMDS clock is zero!\n");
468 return -EINVAL;
469 }
470
471 if (!inno->plat_data->ops->power_on)
472 return -EINVAL;
473
474 for (; cfg->tmdsclock != 0; cfg++)
475 if (tmdsclock <= cfg->tmdsclock &&
476 cfg->version & inno->chip_version)
477 break;
478
479 for (; phy_cfg->tmdsclock != 0; phy_cfg++)
480 if (tmdsclock <= phy_cfg->tmdsclock)
481 break;
482
483 if (cfg->tmdsclock == 0 || phy_cfg->tmdsclock == 0)
484 return -EINVAL;
485
486 dev_dbg(inno->dev, "Inno HDMI PHY Power On\n");
487
488 ret = clk_prepare_enable(inno->phyclk);
489 if (ret)
490 return ret;
491
492 ret = inno->plat_data->ops->power_on(inno, cfg, phy_cfg);
493 if (ret) {
494 clk_disable_unprepare(inno->phyclk);
495 return ret;
496 }
497
498 return 0;
499}
500
501static int inno_hdmi_phy_power_off(struct phy *phy)
502{
503 struct inno_hdmi_phy *inno = phy_get_drvdata(phy);
504
505 if (!inno->plat_data->ops->power_off)
506 return -EINVAL;
507
508 inno->plat_data->ops->power_off(inno);
509
510 clk_disable_unprepare(inno->phyclk);
511
512 dev_dbg(inno->dev, "Inno HDMI PHY Power Off\n");
513
514 return 0;
515}
516
517static const struct phy_ops inno_hdmi_phy_ops = {
518 .owner = THIS_MODULE,
519 .power_on = inno_hdmi_phy_power_on,
520 .power_off = inno_hdmi_phy_power_off,
521};
522
523static const
524struct pre_pll_config *inno_hdmi_phy_get_pre_pll_cfg(struct inno_hdmi_phy *inno,
525 unsigned long rate)
526{
527 const struct pre_pll_config *cfg = pre_pll_cfg_table;
528 unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);
529
530 for (; cfg->pixclock != 0; cfg++)
531 if (cfg->pixclock == rate && cfg->tmdsclock == tmdsclock)
532 break;
533
534 if (cfg->pixclock == 0)
535 return ERR_PTR(-EINVAL);
536
537 return cfg;
538}
539
540static int inno_hdmi_phy_rk3228_clk_is_prepared(struct clk_hw *hw)
541{
542 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
543 u8 status;
544
545 status = inno_read(inno, 0xe0) & RK3228_PRE_PLL_POWER_DOWN;
546 return status ? 0 : 1;
547}
548
549static int inno_hdmi_phy_rk3228_clk_prepare(struct clk_hw *hw)
550{
551 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
552
553 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN, 0);
554 return 0;
555}
556
557static void inno_hdmi_phy_rk3228_clk_unprepare(struct clk_hw *hw)
558{
559 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
560
561 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN,
562 RK3228_PRE_PLL_POWER_DOWN);
563}
564
565static
566unsigned long inno_hdmi_phy_rk3228_clk_recalc_rate(struct clk_hw *hw,
567 unsigned long parent_rate)
568{
569 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
570 u8 nd, no_a, no_b, no_d;
571 u64 vco;
572 u16 nf;
573
574 nd = inno_read(inno, 0xe2) & RK3228_PRE_PLL_PRE_DIV_MASK;
575 nf = (inno_read(inno, 0xe2) & RK3228_PRE_PLL_FB_DIV_8_MASK) << 1;
576 nf |= inno_read(inno, 0xe3);
577 vco = parent_rate * nf;
578
579 if (inno_read(inno, 0xe2) & RK3228_PCLK_VCO_DIV_5_MASK) {
580 do_div(vco, nd * 5);
581 } else {
582 no_a = inno_read(inno, 0xe4) & RK3228_PRE_PLL_PCLK_DIV_A_MASK;
583 if (!no_a)
584 no_a = 1;
585 no_b = inno_read(inno, 0xe4) & RK3228_PRE_PLL_PCLK_DIV_B_MASK;
586 no_b >>= RK3228_PRE_PLL_PCLK_DIV_B_SHIFT;
587 no_b += 2;
588 no_d = inno_read(inno, 0xe5) & RK3228_PRE_PLL_PCLK_DIV_D_MASK;
589
590 do_div(vco, (nd * (no_a == 1 ? no_b : no_a) * no_d * 2));
591 }
592
593 inno->pixclock = vco;
594
595 dev_dbg(inno->dev, "%s rate %lu\n", __func__, inno->pixclock);
596
597 return vco;
598}
599
600static long inno_hdmi_phy_rk3228_clk_round_rate(struct clk_hw *hw,
601 unsigned long rate,
602 unsigned long *parent_rate)
603{
604 const struct pre_pll_config *cfg = pre_pll_cfg_table;
605
606 rate = (rate / 1000) * 1000;
607
608 for (; cfg->pixclock != 0; cfg++)
609 if (cfg->pixclock == rate && !cfg->fracdiv)
610 break;
611
612 if (cfg->pixclock == 0)
613 return -EINVAL;
614
615 return cfg->pixclock;
616}
617
618static int inno_hdmi_phy_rk3228_clk_set_rate(struct clk_hw *hw,
619 unsigned long rate,
620 unsigned long parent_rate)
621{
622 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
623 const struct pre_pll_config *cfg = pre_pll_cfg_table;
624 unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);
625 u32 v;
626 int ret;
627
628 dev_dbg(inno->dev, "%s rate %lu tmdsclk %lu\n",
629 __func__, rate, tmdsclock);
630
631 cfg = inno_hdmi_phy_get_pre_pll_cfg(inno, rate);
632 if (IS_ERR(cfg))
633 return PTR_ERR(cfg);
634
635 /* Power down PRE-PLL */
636 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN,
637 RK3228_PRE_PLL_POWER_DOWN);
638
639 inno_update_bits(inno, 0xe2, RK3228_PRE_PLL_FB_DIV_8_MASK |
640 RK3228_PCLK_VCO_DIV_5_MASK |
641 RK3228_PRE_PLL_PRE_DIV_MASK,
642 RK3228_PRE_PLL_FB_DIV_8(cfg->fbdiv) |
643 RK3228_PCLK_VCO_DIV_5(cfg->vco_div_5_en) |
644 RK3228_PRE_PLL_PRE_DIV(cfg->prediv));
645 inno_write(inno, 0xe3, RK3228_PRE_PLL_FB_DIV_7_0(cfg->fbdiv));
646 inno_update_bits(inno, 0xe4, RK3228_PRE_PLL_PCLK_DIV_B_MASK |
647 RK3228_PRE_PLL_PCLK_DIV_A_MASK,
648 RK3228_PRE_PLL_PCLK_DIV_B(cfg->pclk_div_b) |
649 RK3228_PRE_PLL_PCLK_DIV_A(cfg->pclk_div_a));
650 inno_update_bits(inno, 0xe5, RK3228_PRE_PLL_PCLK_DIV_C_MASK |
651 RK3228_PRE_PLL_PCLK_DIV_D_MASK,
652 RK3228_PRE_PLL_PCLK_DIV_C(cfg->pclk_div_c) |
653 RK3228_PRE_PLL_PCLK_DIV_D(cfg->pclk_div_d));
654 inno_update_bits(inno, 0xe6, RK3228_PRE_PLL_TMDSCLK_DIV_C_MASK |
655 RK3228_PRE_PLL_TMDSCLK_DIV_A_MASK |
656 RK3228_PRE_PLL_TMDSCLK_DIV_B_MASK,
657 RK3228_PRE_PLL_TMDSCLK_DIV_C(cfg->tmds_div_c) |
658 RK3228_PRE_PLL_TMDSCLK_DIV_A(cfg->tmds_div_a) |
659 RK3228_PRE_PLL_TMDSCLK_DIV_B(cfg->tmds_div_b));
660
661 /* Power up PRE-PLL */
662 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN, 0);
663
664 /* Wait for Pre-PLL lock */
665 ret = inno_poll(inno, 0xe8, v, v & RK3228_PRE_PLL_LOCK_STATUS,
666 100, 100000);
667 if (ret) {
668 dev_err(inno->dev, "Pre-PLL locking failed\n");
669 return ret;
670 }
671
672 inno->pixclock = rate;
673
674 return 0;
675}
676
677static const struct clk_ops inno_hdmi_phy_rk3228_clk_ops = {
678 .prepare = inno_hdmi_phy_rk3228_clk_prepare,
679 .unprepare = inno_hdmi_phy_rk3228_clk_unprepare,
680 .is_prepared = inno_hdmi_phy_rk3228_clk_is_prepared,
681 .recalc_rate = inno_hdmi_phy_rk3228_clk_recalc_rate,
682 .round_rate = inno_hdmi_phy_rk3228_clk_round_rate,
683 .set_rate = inno_hdmi_phy_rk3228_clk_set_rate,
684};
685
686static int inno_hdmi_phy_rk3328_clk_is_prepared(struct clk_hw *hw)
687{
688 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
689 u8 status;
690
691 status = inno_read(inno, 0xa0) & RK3328_PRE_PLL_POWER_DOWN;
692 return status ? 0 : 1;
693}
694
695static int inno_hdmi_phy_rk3328_clk_prepare(struct clk_hw *hw)
696{
697 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
698
699 inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN, 0);
700 return 0;
701}
702
703static void inno_hdmi_phy_rk3328_clk_unprepare(struct clk_hw *hw)
704{
705 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
706
707 inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN,
708 RK3328_PRE_PLL_POWER_DOWN);
709}
710
711static
712unsigned long inno_hdmi_phy_rk3328_clk_recalc_rate(struct clk_hw *hw,
713 unsigned long parent_rate)
714{
715 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
716 unsigned long frac;
717 u8 nd, no_a, no_b, no_c, no_d;
718 u64 vco;
719 u16 nf;
720
721 nd = inno_read(inno, 0xa1) & RK3328_PRE_PLL_PRE_DIV_MASK;
722 nf = ((inno_read(inno, 0xa2) & RK3328_PRE_PLL_FB_DIV_11_8_MASK) << 8);
723 nf |= inno_read(inno, 0xa3);
724 vco = parent_rate * nf;
725
726 if (!(inno_read(inno, 0xa2) & RK3328_PRE_PLL_FRAC_DIV_DISABLE)) {
727 frac = inno_read(inno, 0xd3) |
728 (inno_read(inno, 0xd2) << 8) |
729 (inno_read(inno, 0xd1) << 16);
730 vco += DIV_ROUND_CLOSEST(parent_rate * frac, (1 << 24));
731 }
732
733 if (inno_read(inno, 0xa0) & RK3328_PCLK_VCO_DIV_5_MASK) {
734 do_div(vco, nd * 5);
735 } else {
736 no_a = inno_read(inno, 0xa5) & RK3328_PRE_PLL_PCLK_DIV_A_MASK;
737 no_b = inno_read(inno, 0xa5) & RK3328_PRE_PLL_PCLK_DIV_B_MASK;
738 no_b >>= RK3328_PRE_PLL_PCLK_DIV_B_SHIFT;
739 no_b += 2;
740 no_c = inno_read(inno, 0xa6) & RK3328_PRE_PLL_PCLK_DIV_C_MASK;
741 no_c >>= RK3328_PRE_PLL_PCLK_DIV_C_SHIFT;
742 no_c = 1 << no_c;
743 no_d = inno_read(inno, 0xa6) & RK3328_PRE_PLL_PCLK_DIV_D_MASK;
744
745 do_div(vco, (nd * (no_a == 1 ? no_b : no_a) * no_d * 2));
746 }
747
748 inno->pixclock = vco;
749 dev_dbg(inno->dev, "%s rate %lu\n", __func__, inno->pixclock);
750
751 return vco;
752}
753
754static long inno_hdmi_phy_rk3328_clk_round_rate(struct clk_hw *hw,
755 unsigned long rate,
756 unsigned long *parent_rate)
757{
758 const struct pre_pll_config *cfg = pre_pll_cfg_table;
759
760 rate = (rate / 1000) * 1000;
761
762 for (; cfg->pixclock != 0; cfg++)
763 if (cfg->pixclock == rate)
764 break;
765
766 if (cfg->pixclock == 0)
767 return -EINVAL;
768
769 return cfg->pixclock;
770}
771
772static int inno_hdmi_phy_rk3328_clk_set_rate(struct clk_hw *hw,
773 unsigned long rate,
774 unsigned long parent_rate)
775{
776 struct inno_hdmi_phy *inno = to_inno_hdmi_phy(hw);
777 const struct pre_pll_config *cfg = pre_pll_cfg_table;
778 unsigned long tmdsclock = inno_hdmi_phy_get_tmdsclk(inno, rate);
779 u32 val;
780 int ret;
781
782 dev_dbg(inno->dev, "%s rate %lu tmdsclk %lu\n",
783 __func__, rate, tmdsclock);
784
785 cfg = inno_hdmi_phy_get_pre_pll_cfg(inno, rate);
786 if (IS_ERR(cfg))
787 return PTR_ERR(cfg);
788
789 inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN,
790 RK3328_PRE_PLL_POWER_DOWN);
791
792 /* Configure pre-pll */
793 inno_update_bits(inno, 0xa0, RK3228_PCLK_VCO_DIV_5_MASK,
794 RK3228_PCLK_VCO_DIV_5(cfg->vco_div_5_en));
795 inno_write(inno, 0xa1, RK3328_PRE_PLL_PRE_DIV(cfg->prediv));
796
797 val = RK3328_SPREAD_SPECTRUM_MOD_DISABLE;
798 if (!cfg->fracdiv)
799 val |= RK3328_PRE_PLL_FRAC_DIV_DISABLE;
800 inno_write(inno, 0xa2, RK3328_PRE_PLL_FB_DIV_11_8(cfg->fbdiv) | val);
801 inno_write(inno, 0xa3, RK3328_PRE_PLL_FB_DIV_7_0(cfg->fbdiv));
802 inno_write(inno, 0xa5, RK3328_PRE_PLL_PCLK_DIV_A(cfg->pclk_div_a) |
803 RK3328_PRE_PLL_PCLK_DIV_B(cfg->pclk_div_b));
804 inno_write(inno, 0xa6, RK3328_PRE_PLL_PCLK_DIV_C(cfg->pclk_div_c) |
805 RK3328_PRE_PLL_PCLK_DIV_D(cfg->pclk_div_d));
806 inno_write(inno, 0xa4, RK3328_PRE_PLL_TMDSCLK_DIV_C(cfg->tmds_div_c) |
807 RK3328_PRE_PLL_TMDSCLK_DIV_A(cfg->tmds_div_a) |
808 RK3328_PRE_PLL_TMDSCLK_DIV_B(cfg->tmds_div_b));
809 inno_write(inno, 0xd3, RK3328_PRE_PLL_FRAC_DIV_7_0(cfg->fracdiv));
810 inno_write(inno, 0xd2, RK3328_PRE_PLL_FRAC_DIV_15_8(cfg->fracdiv));
811 inno_write(inno, 0xd1, RK3328_PRE_PLL_FRAC_DIV_23_16(cfg->fracdiv));
812
813 inno_update_bits(inno, 0xa0, RK3328_PRE_PLL_POWER_DOWN, 0);
814
815 /* Wait for Pre-PLL lock */
816 ret = inno_poll(inno, 0xa9, val, val & RK3328_PRE_PLL_LOCK_STATUS,
817 1000, 10000);
818 if (ret) {
819 dev_err(inno->dev, "Pre-PLL locking failed\n");
820 return ret;
821 }
822
823 inno->pixclock = rate;
824
825 return 0;
826}
827
828static const struct clk_ops inno_hdmi_phy_rk3328_clk_ops = {
829 .prepare = inno_hdmi_phy_rk3328_clk_prepare,
830 .unprepare = inno_hdmi_phy_rk3328_clk_unprepare,
831 .is_prepared = inno_hdmi_phy_rk3328_clk_is_prepared,
832 .recalc_rate = inno_hdmi_phy_rk3328_clk_recalc_rate,
833 .round_rate = inno_hdmi_phy_rk3328_clk_round_rate,
834 .set_rate = inno_hdmi_phy_rk3328_clk_set_rate,
835};
836
837static int inno_hdmi_phy_clk_register(struct inno_hdmi_phy *inno)
838{
839 struct device *dev = inno->dev;
840 struct device_node *np = dev->of_node;
841 struct clk_init_data init;
842 const char *parent_name;
843 int ret;
844
845 parent_name = __clk_get_name(inno->refoclk);
846
847 init.parent_names = &parent_name;
848 init.num_parents = 1;
849 init.flags = 0;
850 init.name = "pin_hd20_pclk";
851 init.ops = inno->plat_data->clk_ops;
852
853 /* optional override of the clock name */
854 of_property_read_string(np, "clock-output-names", &init.name);
855
856 inno->hw.init = &init;
857
858 inno->phyclk = devm_clk_register(dev, &inno->hw);
859 if (IS_ERR(inno->phyclk)) {
860 ret = PTR_ERR(inno->phyclk);
861 dev_err(dev, "failed to register clock: %d\n", ret);
862 return ret;
863 }
864
865 ret = of_clk_add_provider(np, of_clk_src_simple_get, inno->phyclk);
866 if (ret) {
867 dev_err(dev, "failed to register clock provider: %d\n", ret);
868 return ret;
869 }
870
871 return 0;
872}
873
874static int inno_hdmi_phy_rk3228_init(struct inno_hdmi_phy *inno)
875{
876 /*
877 * Use phy internal register control
878 * rxsense/poweron/pllpd/pdataen signal.
879 */
880 inno_write(inno, 0x01, RK3228_BYPASS_RXSENSE_EN |
881 RK3228_BYPASS_PWRON_EN |
882 RK3228_BYPASS_PLLPD_EN);
883 inno_update_bits(inno, 0x02, RK3228_BYPASS_PDATA_EN,
884 RK3228_BYPASS_PDATA_EN);
885
886 /* manual power down post-PLL */
887 inno_update_bits(inno, 0xaa, RK3228_POST_PLL_CTRL_MANUAL,
888 RK3228_POST_PLL_CTRL_MANUAL);
889
890 inno->chip_version = 1;
891
892 return 0;
893}
894
895static int
896inno_hdmi_phy_rk3228_power_on(struct inno_hdmi_phy *inno,
897 const struct post_pll_config *cfg,
898 const struct phy_config *phy_cfg)
899{
900 int ret;
901 u32 v;
902
903 inno_update_bits(inno, 0x02, RK3228_PDATAEN_DISABLE,
904 RK3228_PDATAEN_DISABLE);
905 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN |
906 RK3228_POST_PLL_POWER_DOWN,
907 RK3228_PRE_PLL_POWER_DOWN |
908 RK3228_POST_PLL_POWER_DOWN);
909
910 /* Post-PLL update */
911 inno_update_bits(inno, 0xe9, RK3228_POST_PLL_PRE_DIV_MASK,
912 RK3228_POST_PLL_PRE_DIV(cfg->prediv));
913 inno_update_bits(inno, 0xeb, RK3228_POST_PLL_FB_DIV_8_MASK,
914 RK3228_POST_PLL_FB_DIV_8(cfg->fbdiv));
915 inno_write(inno, 0xea, RK3228_POST_PLL_FB_DIV_7_0(cfg->fbdiv));
916
917 if (cfg->postdiv == 1) {
918 inno_update_bits(inno, 0xe9, RK3228_POST_PLL_POST_DIV_ENABLE,
919 0);
920 } else {
921 int div = cfg->postdiv / 2 - 1;
922
923 inno_update_bits(inno, 0xe9, RK3228_POST_PLL_POST_DIV_ENABLE,
924 RK3228_POST_PLL_POST_DIV_ENABLE);
925 inno_update_bits(inno, 0xeb, RK3228_POST_PLL_POST_DIV_MASK,
926 RK3228_POST_PLL_POST_DIV(div));
927 }
928
929 for (v = 0; v < 4; v++)
930 inno_write(inno, 0xef + v, phy_cfg->regs[v]);
931
932 inno_update_bits(inno, 0xe0, RK3228_PRE_PLL_POWER_DOWN |
933 RK3228_POST_PLL_POWER_DOWN, 0);
934 inno_update_bits(inno, 0xe1, RK3228_BANDGAP_ENABLE,
935 RK3228_BANDGAP_ENABLE);
936 inno_update_bits(inno, 0xe1, RK3228_TMDS_DRIVER_ENABLE,
937 RK3228_TMDS_DRIVER_ENABLE);
938
939 /* Wait for post PLL lock */
940 ret = inno_poll(inno, 0xeb, v, v & RK3228_POST_PLL_LOCK_STATUS,
941 100, 100000);
942 if (ret) {
943 dev_err(inno->dev, "Post-PLL locking failed\n");
944 return ret;
945 }
946
947 if (cfg->tmdsclock > 340000000)
948 msleep(100);
949
950 inno_update_bits(inno, 0x02, RK3228_PDATAEN_DISABLE, 0);
951 return 0;
952}
953
954static void inno_hdmi_phy_rk3228_power_off(struct inno_hdmi_phy *inno)
955{
956 inno_update_bits(inno, 0xe1, RK3228_TMDS_DRIVER_ENABLE, 0);
957 inno_update_bits(inno, 0xe1, RK3228_BANDGAP_ENABLE, 0);
958 inno_update_bits(inno, 0xe0, RK3228_POST_PLL_POWER_DOWN,
959 RK3228_POST_PLL_POWER_DOWN);
960}
961
962static const struct inno_hdmi_phy_ops rk3228_hdmi_phy_ops = {
963 .init = inno_hdmi_phy_rk3228_init,
964 .power_on = inno_hdmi_phy_rk3228_power_on,
965 .power_off = inno_hdmi_phy_rk3228_power_off,
966};
967
968static int inno_hdmi_phy_rk3328_init(struct inno_hdmi_phy *inno)
969{
970 struct nvmem_cell *cell;
971 unsigned char *efuse_buf;
972 size_t len;
973
974 /*
975 * Use phy internal register control
976 * rxsense/poweron/pllpd/pdataen signal.
977 */
978 inno_write(inno, 0x01, RK3328_BYPASS_RXSENSE_EN |
979 RK3328_BYPASS_POWERON_EN |
980 RK3328_BYPASS_PLLPD_EN);
981 inno_write(inno, 0x02, RK3328_INT_POL_HIGH | RK3328_BYPASS_PDATA_EN |
982 RK3328_PDATA_EN);
983
984 /* Disable phy irq */
985 inno_write(inno, 0x05, 0);
986 inno_write(inno, 0x07, 0);
987
988 /* try to read the chip-version */
989 inno->chip_version = 1;
990 cell = nvmem_cell_get(inno->dev, "cpu-version");
991 if (IS_ERR(cell)) {
992 if (PTR_ERR(cell) == -EPROBE_DEFER)
993 return -EPROBE_DEFER;
994
995 return 0;
996 }
997
998 efuse_buf = nvmem_cell_read(cell, &len);
999 nvmem_cell_put(cell);
1000
1001 if (IS_ERR(efuse_buf))
1002 return 0;
1003 if (len == 1)
1004 inno->chip_version = efuse_buf[0] + 1;
1005 kfree(efuse_buf);
1006
1007 return 0;
1008}
1009
1010static int
1011inno_hdmi_phy_rk3328_power_on(struct inno_hdmi_phy *inno,
1012 const struct post_pll_config *cfg,
1013 const struct phy_config *phy_cfg)
1014{
1015 int ret;
1016 u32 v;
1017
1018 inno_update_bits(inno, 0x02, RK3328_PDATA_EN, 0);
1019 inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN,
1020 RK3328_POST_PLL_POWER_DOWN);
1021
1022 inno_write(inno, 0xac, RK3328_POST_PLL_FB_DIV_7_0(cfg->fbdiv));
1023 if (cfg->postdiv == 1) {
1024 inno_write(inno, 0xaa, RK3328_POST_PLL_REFCLK_SEL_TMDS);
1025 inno_write(inno, 0xab, RK3328_POST_PLL_FB_DIV_8(cfg->fbdiv) |
1026 RK3328_POST_PLL_PRE_DIV(cfg->prediv));
1027 } else {
1028 v = (cfg->postdiv / 2) - 1;
1029 v &= RK3328_POST_PLL_POST_DIV_MASK;
1030 inno_write(inno, 0xad, v);
1031 inno_write(inno, 0xab, RK3328_POST_PLL_FB_DIV_8(cfg->fbdiv) |
1032 RK3328_POST_PLL_PRE_DIV(cfg->prediv));
1033 inno_write(inno, 0xaa, RK3328_POST_PLL_POST_DIV_ENABLE |
1034 RK3328_POST_PLL_REFCLK_SEL_TMDS);
1035 }
1036
1037 for (v = 0; v < 14; v++)
1038 inno_write(inno, 0xb5 + v, phy_cfg->regs[v]);
1039
1040 /* set ESD detection threshold for TMDS CLK, D2, D1 and D0 */
1041 for (v = 0; v < 4; v++)
1042 inno_update_bits(inno, 0xc8 + v, RK3328_ESD_DETECT_MASK,
1043 RK3328_ESD_DETECT_340MV);
1044
1045 if (phy_cfg->tmdsclock > 340000000) {
1046 /* Set termination resistor to 100ohm */
1047 v = clk_get_rate(inno->sysclk) / 100000;
1048 inno_write(inno, 0xc5, RK3328_TERM_RESISTOR_CALIB_SPEED_14_8(v)
1049 | RK3328_BYPASS_TERM_RESISTOR_CALIB);
1050 inno_write(inno, 0xc6, RK3328_TERM_RESISTOR_CALIB_SPEED_7_0(v));
1051 inno_write(inno, 0xc7, RK3328_TERM_RESISTOR_100);
1052 inno_update_bits(inno, 0xc5,
1053 RK3328_BYPASS_TERM_RESISTOR_CALIB, 0);
1054 } else {
1055 inno_write(inno, 0xc5, RK3328_BYPASS_TERM_RESISTOR_CALIB);
1056
1057 /* clk termination resistor is 50ohm (parallel resistors) */
1058 if (phy_cfg->tmdsclock > 165000000)
1059 inno_update_bits(inno, 0xc8,
1060 RK3328_TMDS_TERM_RESIST_MASK,
1061 RK3328_TMDS_TERM_RESIST_75 |
1062 RK3328_TMDS_TERM_RESIST_150);
1063
1064 /* data termination resistor for D2, D1 and D0 is 150ohm */
1065 for (v = 0; v < 3; v++)
1066 inno_update_bits(inno, 0xc9 + v,
1067 RK3328_TMDS_TERM_RESIST_MASK,
1068 RK3328_TMDS_TERM_RESIST_150);
1069 }
1070
1071 inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN, 0);
1072 inno_update_bits(inno, 0xb0, RK3328_BANDGAP_ENABLE,
1073 RK3328_BANDGAP_ENABLE);
1074 inno_update_bits(inno, 0xb2, RK3328_TMDS_DRIVER_ENABLE,
1075 RK3328_TMDS_DRIVER_ENABLE);
1076
1077 /* Wait for post PLL lock */
1078 ret = inno_poll(inno, 0xaf, v, v & RK3328_POST_PLL_LOCK_STATUS,
1079 1000, 10000);
1080 if (ret) {
1081 dev_err(inno->dev, "Post-PLL locking failed\n");
1082 return ret;
1083 }
1084
1085 if (phy_cfg->tmdsclock > 340000000)
1086 msleep(100);
1087
1088 inno_update_bits(inno, 0x02, RK3328_PDATA_EN, RK3328_PDATA_EN);
1089
1090 /* Enable PHY IRQ */
1091 inno_write(inno, 0x05, RK3328_INT_TMDS_CLK(RK3328_INT_VSS_AGND_ESD_DET)
1092 | RK3328_INT_TMDS_D2(RK3328_INT_VSS_AGND_ESD_DET));
1093 inno_write(inno, 0x07, RK3328_INT_TMDS_D1(RK3328_INT_VSS_AGND_ESD_DET)
1094 | RK3328_INT_TMDS_D0(RK3328_INT_VSS_AGND_ESD_DET));
1095 return 0;
1096}
1097
1098static void inno_hdmi_phy_rk3328_power_off(struct inno_hdmi_phy *inno)
1099{
1100 inno_update_bits(inno, 0xb2, RK3328_TMDS_DRIVER_ENABLE, 0);
1101 inno_update_bits(inno, 0xb0, RK3328_BANDGAP_ENABLE, 0);
1102 inno_update_bits(inno, 0xaa, RK3328_POST_PLL_POWER_DOWN,
1103 RK3328_POST_PLL_POWER_DOWN);
1104
1105 /* Disable PHY IRQ */
1106 inno_write(inno, 0x05, 0);
1107 inno_write(inno, 0x07, 0);
1108}
1109
1110static const struct inno_hdmi_phy_ops rk3328_hdmi_phy_ops = {
1111 .init = inno_hdmi_phy_rk3328_init,
1112 .power_on = inno_hdmi_phy_rk3328_power_on,
1113 .power_off = inno_hdmi_phy_rk3328_power_off,
1114};
1115
1116static const struct inno_hdmi_phy_drv_data rk3228_hdmi_phy_drv_data = {
1117 .ops = &rk3228_hdmi_phy_ops,
1118 .clk_ops = &inno_hdmi_phy_rk3228_clk_ops,
1119 .phy_cfg_table = rk3228_phy_cfg,
1120};
1121
1122static const struct inno_hdmi_phy_drv_data rk3328_hdmi_phy_drv_data = {
1123 .ops = &rk3328_hdmi_phy_ops,
1124 .clk_ops = &inno_hdmi_phy_rk3328_clk_ops,
1125 .phy_cfg_table = rk3328_phy_cfg,
1126};
1127
1128static const struct regmap_config inno_hdmi_phy_regmap_config = {
1129 .reg_bits = 32,
1130 .val_bits = 32,
1131 .reg_stride = 4,
1132 .max_register = 0x400,
1133};
1134
1135static void inno_hdmi_phy_action(void *data)
1136{
1137 struct inno_hdmi_phy *inno = data;
1138
1139 clk_disable_unprepare(inno->refpclk);
1140 clk_disable_unprepare(inno->sysclk);
1141}
1142
1143static int inno_hdmi_phy_probe(struct platform_device *pdev)
1144{
1145 struct inno_hdmi_phy *inno;
1146 struct phy_provider *phy_provider;
1147 struct resource *res;
1148 void __iomem *regs;
1149 int ret;
1150
1151 inno = devm_kzalloc(&pdev->dev, sizeof(*inno), GFP_KERNEL);
1152 if (!inno)
1153 return -ENOMEM;
1154
1155 inno->dev = &pdev->dev;
1156
1157 inno->plat_data = of_device_get_match_data(inno->dev);
1158 if (!inno->plat_data || !inno->plat_data->ops)
1159 return -EINVAL;
1160
1161 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1162 regs = devm_ioremap_resource(inno->dev, res);
1163 if (IS_ERR(regs))
1164 return PTR_ERR(regs);
1165
1166 inno->sysclk = devm_clk_get(inno->dev, "sysclk");
1167 if (IS_ERR(inno->sysclk)) {
1168 ret = PTR_ERR(inno->sysclk);
1169 dev_err(inno->dev, "failed to get sysclk: %d\n", ret);
1170 return ret;
1171 }
1172
1173 inno->refpclk = devm_clk_get(inno->dev, "refpclk");
1174 if (IS_ERR(inno->refpclk)) {
1175 ret = PTR_ERR(inno->refpclk);
1176 dev_err(inno->dev, "failed to get ref clock: %d\n", ret);
1177 return ret;
1178 }
1179
1180 inno->refoclk = devm_clk_get(inno->dev, "refoclk");
1181 if (IS_ERR(inno->refoclk)) {
1182 ret = PTR_ERR(inno->refoclk);
1183 dev_err(inno->dev, "failed to get oscillator-ref clock: %d\n",
1184 ret);
1185 return ret;
1186 }
1187
1188 ret = clk_prepare_enable(inno->sysclk);
1189 if (ret) {
1190 dev_err(inno->dev, "Cannot enable inno phy sysclk: %d\n", ret);
1191 return ret;
1192 }
1193
1194 /*
1195 * Refpclk needs to be on, on at least the rk3328 for still
1196 * unknown reasons.
1197 */
1198 ret = clk_prepare_enable(inno->refpclk);
1199 if (ret) {
1200 dev_err(inno->dev, "failed to enable refpclk\n");
1201 clk_disable_unprepare(inno->sysclk);
1202 return ret;
1203 }
1204
1205 ret = devm_add_action_or_reset(inno->dev, inno_hdmi_phy_action,
1206 inno);
1207 if (ret)
1208 return ret;
1209
1210 inno->regmap = devm_regmap_init_mmio(inno->dev, regs,
1211 &inno_hdmi_phy_regmap_config);
1212 if (IS_ERR(inno->regmap))
1213 return PTR_ERR(inno->regmap);
1214
1215 /* only the newer rk3328 hdmiphy has an interrupt */
1216 inno->irq = platform_get_irq(pdev, 0);
1217 if (inno->irq > 0) {
1218 ret = devm_request_threaded_irq(inno->dev, inno->irq,
1219 inno_hdmi_phy_rk3328_hardirq,
1220 inno_hdmi_phy_rk3328_irq,
1221 IRQF_SHARED,
1222 dev_name(inno->dev), inno);
1223 if (ret)
1224 return ret;
1225 }
1226
1227 inno->phy = devm_phy_create(inno->dev, NULL, &inno_hdmi_phy_ops);
1228 if (IS_ERR(inno->phy)) {
1229 dev_err(inno->dev, "failed to create HDMI PHY\n");
1230 return PTR_ERR(inno->phy);
1231 }
1232
1233 phy_set_drvdata(inno->phy, inno);
1234 phy_set_bus_width(inno->phy, 8);
1235
1236 if (inno->plat_data->ops->init) {
1237 ret = inno->plat_data->ops->init(inno);
1238 if (ret)
1239 return ret;
1240 }
1241
1242 ret = inno_hdmi_phy_clk_register(inno);
1243 if (ret)
1244 return ret;
1245
1246 phy_provider = devm_of_phy_provider_register(inno->dev,
1247 of_phy_simple_xlate);
1248 return PTR_ERR_OR_ZERO(phy_provider);
1249}
1250
1251static int inno_hdmi_phy_remove(struct platform_device *pdev)
1252{
1253 of_clk_del_provider(pdev->dev.of_node);
1254
1255 return 0;
1256}
1257
1258static const struct of_device_id inno_hdmi_phy_of_match[] = {
1259 {
1260 .compatible = "rockchip,rk3228-hdmi-phy",
1261 .data = &rk3228_hdmi_phy_drv_data
1262 }, {
1263 .compatible = "rockchip,rk3328-hdmi-phy",
1264 .data = &rk3328_hdmi_phy_drv_data
1265 }, { /* sentinel */ }
1266};
1267MODULE_DEVICE_TABLE(of, inno_hdmi_phy_of_match);
1268
1269static struct platform_driver inno_hdmi_phy_driver = {
1270 .probe = inno_hdmi_phy_probe,
1271 .remove = inno_hdmi_phy_remove,
1272 .driver = {
1273 .name = "inno-hdmi-phy",
1274 .of_match_table = inno_hdmi_phy_of_match,
1275 },
1276};
1277module_platform_driver(inno_hdmi_phy_driver);
1278
1279MODULE_AUTHOR("Zheng Yang <zhengyang@rock-chips.com>");
1280MODULE_DESCRIPTION("Innosilion HDMI 2.0 Transmitter PHY Driver");
1281MODULE_LICENSE("GPL v2");