NVMe: Only release requested regions
[linux-2.6-block.git] / drivers / phy / phy-ti-pipe3.c
CommitLineData
57f6ce07 1/*
a70143bb 2 * phy-ti-pipe3 - PIPE3 PHY driver.
57f6ce07
KVA
3 *
4 * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * Author: Kishon Vijay Abraham I <kishon@ti.com>
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 */
18
19#include <linux/module.h>
20#include <linux/platform_device.h>
21#include <linux/slab.h>
a70143bb 22#include <linux/phy/phy.h>
57f6ce07
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23#include <linux/of.h>
24#include <linux/clk.h>
25#include <linux/err.h>
a70143bb 26#include <linux/io.h>
57f6ce07
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27#include <linux/pm_runtime.h>
28#include <linux/delay.h>
14da699b 29#include <linux/phy/omap_control_phy.h>
918ee0d2 30#include <linux/of_platform.h>
c934b361
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31#include <linux/mfd/syscon.h>
32#include <linux/regmap.h>
57f6ce07 33
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34#define PLL_STATUS 0x00000004
35#define PLL_GO 0x00000008
36#define PLL_CONFIGURATION1 0x0000000C
37#define PLL_CONFIGURATION2 0x00000010
38#define PLL_CONFIGURATION3 0x00000014
39#define PLL_CONFIGURATION4 0x00000020
40
41#define PLL_REGM_MASK 0x001FFE00
42#define PLL_REGM_SHIFT 0x9
43#define PLL_REGM_F_MASK 0x0003FFFF
44#define PLL_REGM_F_SHIFT 0x0
45#define PLL_REGN_MASK 0x000001FE
46#define PLL_REGN_SHIFT 0x1
47#define PLL_SELFREQDCO_MASK 0x0000000E
48#define PLL_SELFREQDCO_SHIFT 0x1
49#define PLL_SD_MASK 0x0003FC00
1562864f 50#define PLL_SD_SHIFT 10
57f6ce07 51#define SET_PLL_GO 0x1
629138db
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52#define PLL_LDOPWDN BIT(15)
53#define PLL_TICOPWDN BIT(16)
57f6ce07
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54#define PLL_LOCK 0x2
55#define PLL_IDLE 0x1
56
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57#define SATA_PLL_SOFT_RESET BIT(18)
58
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59#define PIPE3_PHY_PWRCTL_CLK_CMD_MASK 0x003FC000
60#define PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT 14
61
62#define PIPE3_PHY_PWRCTL_CLK_FREQ_MASK 0xFFC00000
63#define PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT 22
64
65#define PIPE3_PHY_TX_RX_POWERON 0x3
66#define PIPE3_PHY_TX_RX_POWEROFF 0x0
67
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68#define PCIE_PCS_MASK 0xFF0000
69#define PCIE_PCS_DELAY_COUNT_SHIFT 0x10
70
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71/*
72 * This is an Empirical value that works, need to confirm the actual
a70143bb
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73 * value required for the PIPE3PHY_PLL_CONFIGURATION2.PLL_IDLE status
74 * to be correctly reflected in the PIPE3PHY_PLL_STATUS register.
57f6ce07 75 */
629138db
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76#define PLL_IDLE_TIME 100 /* in milliseconds */
77#define PLL_LOCK_TIME 100 /* in milliseconds */
57f6ce07 78
a70143bb
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79struct pipe3_dpll_params {
80 u16 m;
81 u8 n;
82 u8 freq:3;
83 u8 sd;
84 u32 mf;
85};
86
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87struct pipe3_dpll_map {
88 unsigned long rate;
89 struct pipe3_dpll_params params;
90};
91
a70143bb
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92struct ti_pipe3 {
93 void __iomem *pll_ctrl_base;
94 struct device *dev;
95 struct device *control_dev;
96 struct clk *wkupclk;
97 struct clk *sys_clk;
1562864f 98 struct clk *refclk;
99bbd48c 99 struct clk *div_clk;
61f54674 100 struct pipe3_dpll_map *dpll_map;
c396a1c7 101 struct regmap *phy_power_syscon; /* ctrl. reg. acces */
3f2362c5 102 struct regmap *pcs_syscon; /* ctrl. reg. acces */
c934b361
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103 struct regmap *dpll_reset_syscon; /* ctrl. reg. acces */
104 unsigned int dpll_reset_reg; /* reg. index within syscon */
c396a1c7 105 unsigned int power_reg; /* power reg. index within syscon */
3f2362c5 106 unsigned int pcie_pcs_reg; /* pcs reg. index in syscon */
c934b361 107 bool sata_refclk_enabled;
a70143bb
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108};
109
61f54674 110static struct pipe3_dpll_map dpll_map_usb[] = {
519c6013
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111 {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */
112 {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */
113 {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */
114 {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */
115 {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */
116 {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */
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117 { }, /* Terminator */
118};
119
120static struct pipe3_dpll_map dpll_map_sata[] = {
121 {12000000, {1000, 7, 4, 6, 0} }, /* 12 MHz */
122 {16800000, {714, 7, 4, 6, 0} }, /* 16.8 MHz */
123 {19200000, {625, 7, 4, 6, 0} }, /* 19.2 MHz */
124 {20000000, {600, 7, 4, 6, 0} }, /* 20 MHz */
125 {26000000, {461, 7, 4, 6, 0} }, /* 26 MHz */
126 {38400000, {312, 7, 4, 6, 0} }, /* 38.4 MHz */
127 { }, /* Terminator */
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128};
129
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130static inline u32 ti_pipe3_readl(void __iomem *addr, unsigned offset)
131{
132 return __raw_readl(addr + offset);
133}
134
135static inline void ti_pipe3_writel(void __iomem *addr, unsigned offset,
136 u32 data)
137{
138 __raw_writel(data, addr + offset);
139}
140
61f54674 141static struct pipe3_dpll_params *ti_pipe3_get_dpll_params(struct ti_pipe3 *phy)
519c6013 142{
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143 unsigned long rate;
144 struct pipe3_dpll_map *dpll_map = phy->dpll_map;
519c6013 145
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146 rate = clk_get_rate(phy->sys_clk);
147
148 for (; dpll_map->rate; dpll_map++) {
149 if (rate == dpll_map->rate)
150 return &dpll_map->params;
519c6013
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151 }
152
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153 dev_err(phy->dev, "No DPLL configuration for %lu Hz SYS CLK\n", rate);
154
1b97be8c 155 return NULL;
519c6013
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156}
157
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158static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy);
159static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy);
160
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161static int ti_pipe3_power_off(struct phy *x)
162{
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163 u32 val;
164 int ret;
a70143bb 165 struct ti_pipe3 *phy = phy_get_drvdata(x);
a70143bb 166
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167 if (!phy->phy_power_syscon) {
168 omap_control_phy_power(phy->control_dev, 0);
169 return 0;
170 }
a70143bb 171
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172 val = PIPE3_PHY_TX_RX_POWEROFF << PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT;
173
174 ret = regmap_update_bits(phy->phy_power_syscon, phy->power_reg,
175 PIPE3_PHY_PWRCTL_CLK_CMD_MASK, val);
176 return ret;
a70143bb
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177}
178
179static int ti_pipe3_power_on(struct phy *x)
57f6ce07 180{
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181 u32 val;
182 u32 mask;
183 int ret;
184 unsigned long rate;
a70143bb 185 struct ti_pipe3 *phy = phy_get_drvdata(x);
57f6ce07 186
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187 if (!phy->phy_power_syscon) {
188 omap_control_phy_power(phy->control_dev, 1);
189 return 0;
190 }
57f6ce07 191
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192 rate = clk_get_rate(phy->sys_clk);
193 if (!rate) {
194 dev_err(phy->dev, "Invalid clock rate\n");
195 return -EINVAL;
196 }
197 rate = rate / 1000000;
198 mask = OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_CMD_MASK |
199 OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_MASK;
200 val = PIPE3_PHY_TX_RX_POWERON << PIPE3_PHY_PWRCTL_CLK_CMD_SHIFT;
201 val |= rate << OMAP_CTRL_PIPE3_PHY_PWRCTL_CLK_FREQ_SHIFT;
202
203 ret = regmap_update_bits(phy->phy_power_syscon, phy->power_reg,
204 mask, val);
205 return ret;
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206}
207
629138db 208static int ti_pipe3_dpll_wait_lock(struct ti_pipe3 *phy)
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209{
210 u32 val;
211 unsigned long timeout;
212
629138db 213 timeout = jiffies + msecs_to_jiffies(PLL_LOCK_TIME);
57f6ce07 214 do {
629138db 215 cpu_relax();
a70143bb 216 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
57f6ce07 217 if (val & PLL_LOCK)
a5e5d3c0 218 return 0;
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219 } while (!time_after(jiffies, timeout));
220
a5e5d3c0
AL
221 dev_err(phy->dev, "DPLL failed to lock\n");
222 return -EBUSY;
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223}
224
629138db 225static int ti_pipe3_dpll_program(struct ti_pipe3 *phy)
57f6ce07
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226{
227 u32 val;
a70143bb 228 struct pipe3_dpll_params *dpll_params;
57f6ce07 229
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230 dpll_params = ti_pipe3_get_dpll_params(phy);
231 if (!dpll_params)
57f6ce07 232 return -EINVAL;
57f6ce07 233
a70143bb 234 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
57f6ce07 235 val &= ~PLL_REGN_MASK;
519c6013 236 val |= dpll_params->n << PLL_REGN_SHIFT;
a70143bb 237 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
57f6ce07 238
a70143bb 239 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
57f6ce07 240 val &= ~PLL_SELFREQDCO_MASK;
519c6013 241 val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT;
a70143bb 242 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
57f6ce07 243
a70143bb 244 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION1);
57f6ce07 245 val &= ~PLL_REGM_MASK;
519c6013 246 val |= dpll_params->m << PLL_REGM_SHIFT;
a70143bb 247 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION1, val);
57f6ce07 248
a70143bb 249 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION4);
57f6ce07 250 val &= ~PLL_REGM_F_MASK;
519c6013 251 val |= dpll_params->mf << PLL_REGM_F_SHIFT;
a70143bb 252 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION4, val);
57f6ce07 253
a70143bb 254 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION3);
57f6ce07 255 val &= ~PLL_SD_MASK;
519c6013 256 val |= dpll_params->sd << PLL_SD_SHIFT;
a70143bb 257 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION3, val);
57f6ce07 258
629138db 259 ti_pipe3_writel(phy->pll_ctrl_base, PLL_GO, SET_PLL_GO);
57f6ce07 260
629138db 261 return ti_pipe3_dpll_wait_lock(phy);
57f6ce07
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262}
263
a70143bb 264static int ti_pipe3_init(struct phy *x)
57f6ce07 265{
a70143bb 266 struct ti_pipe3 *phy = phy_get_drvdata(x);
629138db
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267 u32 val;
268 int ret = 0;
519c6013 269
0a0830fe 270 ti_pipe3_enable_clocks(phy);
0bc09f9c
V
271 /*
272 * Set pcie_pcs register to 0x96 for proper functioning of phy
273 * as recommended in AM572x TRM SPRUHZ6, section 18.5.2.2, table
274 * 18-1804.
275 */
f0e2cf7b 276 if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-pcie")) {
3f2362c5
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277 if (!phy->pcs_syscon) {
278 omap_control_pcie_pcs(phy->control_dev, 0x96);
279 return 0;
280 }
281
282 val = 0x96 << OMAP_CTRL_PCIE_PCS_DELAY_COUNT_SHIFT;
283 ret = regmap_update_bits(phy->pcs_syscon, phy->pcie_pcs_reg,
284 PCIE_PCS_MASK, val);
285 return ret;
f0e2cf7b 286 }
99bbd48c 287
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288 /* Bring it out of IDLE if it is IDLE */
289 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
290 if (val & PLL_IDLE) {
291 val &= ~PLL_IDLE;
292 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
293 ret = ti_pipe3_dpll_wait_lock(phy);
294 }
57f6ce07 295
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296 /* Program the DPLL only if not locked */
297 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
298 if (!(val & PLL_LOCK))
299 if (ti_pipe3_dpll_program(phy))
300 return -EINVAL;
57f6ce07 301
629138db 302 return ret;
57f6ce07
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303}
304
629138db
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305static int ti_pipe3_exit(struct phy *x)
306{
307 struct ti_pipe3 *phy = phy_get_drvdata(x);
308 u32 val;
309 unsigned long timeout;
310
c934b361
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311 /* If dpll_reset_syscon is not present we wont power down SATA DPLL
312 * due to Errata i783
313 */
314 if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata") &&
315 !phy->dpll_reset_syscon)
56042e4e
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316 return 0;
317
0a0830fe
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318 /* PCIe doesn't have internal DPLL */
319 if (!of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-pcie")) {
320 /* Put DPLL in IDLE mode */
321 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_CONFIGURATION2);
322 val |= PLL_IDLE;
323 ti_pipe3_writel(phy->pll_ctrl_base, PLL_CONFIGURATION2, val);
629138db 324
0a0830fe
RQ
325 /* wait for LDO and Oscillator to power down */
326 timeout = jiffies + msecs_to_jiffies(PLL_IDLE_TIME);
327 do {
328 cpu_relax();
329 val = ti_pipe3_readl(phy->pll_ctrl_base, PLL_STATUS);
330 if ((val & PLL_TICOPWDN) && (val & PLL_LDOPWDN))
331 break;
332 } while (!time_after(jiffies, timeout));
333
334 if (!(val & PLL_TICOPWDN) || !(val & PLL_LDOPWDN)) {
335 dev_err(phy->dev, "Failed to power down: PLL_STATUS 0x%x\n",
336 val);
337 return -EBUSY;
338 }
629138db
RQ
339 }
340
c934b361
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341 /* i783: SATA needs control bit toggle after PLL unlock */
342 if (of_device_is_compatible(phy->dev->of_node, "ti,phy-pipe3-sata")) {
343 regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg,
344 SATA_PLL_SOFT_RESET, SATA_PLL_SOFT_RESET);
345 regmap_update_bits(phy->dpll_reset_syscon, phy->dpll_reset_reg,
346 SATA_PLL_SOFT_RESET, 0);
347 }
348
0a0830fe
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349 ti_pipe3_disable_clocks(phy);
350
629138db
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351 return 0;
352}
4a9e5ca1 353static const struct phy_ops ops = {
a70143bb 354 .init = ti_pipe3_init,
629138db 355 .exit = ti_pipe3_exit,
a70143bb
KVA
356 .power_on = ti_pipe3_power_on,
357 .power_off = ti_pipe3_power_off,
358 .owner = THIS_MODULE,
359};
360
61f54674 361static const struct of_device_id ti_pipe3_id_table[];
61f54674 362
234738ea 363static int ti_pipe3_get_clk(struct ti_pipe3 *phy)
57f6ce07 364{
99bbd48c 365 struct clk *clk;
234738ea
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366 struct device *dev = phy->dev;
367 struct device_node *node = dev->of_node;
9c7f0443 368
d65ff52e 369 phy->refclk = devm_clk_get(dev, "refclk");
7f33912d 370 if (IS_ERR(phy->refclk)) {
d65ff52e 371 dev_err(dev, "unable to get refclk\n");
7f33912d
RQ
372 /* older DTBs have missing refclk in SATA PHY
373 * so don't bail out in case of SATA PHY.
374 */
375 if (!of_device_is_compatible(node, "ti,phy-pipe3-sata"))
376 return PTR_ERR(phy->refclk);
377 }
378
99bbd48c 379 if (!of_device_is_compatible(node, "ti,phy-pipe3-sata")) {
d65ff52e 380 phy->wkupclk = devm_clk_get(dev, "wkupclk");
9c7f0443 381 if (IS_ERR(phy->wkupclk)) {
d65ff52e 382 dev_err(dev, "unable to get wkupclk\n");
9c7f0443
RQ
383 return PTR_ERR(phy->wkupclk);
384 }
9c7f0443
RQ
385 } else {
386 phy->wkupclk = ERR_PTR(-ENODEV);
234738ea
KVA
387 }
388
c396a1c7
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389 if (!of_device_is_compatible(node, "ti,phy-pipe3-pcie") ||
390 phy->phy_power_syscon) {
234738ea
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391 phy->sys_clk = devm_clk_get(dev, "sysclk");
392 if (IS_ERR(phy->sys_clk)) {
393 dev_err(dev, "unable to get sysclk\n");
394 return -EINVAL;
c934b361 395 }
57f6ce07 396 }
57f6ce07 397
99bbd48c 398 if (of_device_is_compatible(node, "ti,phy-pipe3-pcie")) {
d65ff52e 399 clk = devm_clk_get(dev, "dpll_ref");
99bbd48c 400 if (IS_ERR(clk)) {
d65ff52e 401 dev_err(dev, "unable to get dpll ref clk\n");
99bbd48c
KVA
402 return PTR_ERR(clk);
403 }
404 clk_set_rate(clk, 1500000000);
405
d65ff52e 406 clk = devm_clk_get(dev, "dpll_ref_m2");
99bbd48c 407 if (IS_ERR(clk)) {
d65ff52e 408 dev_err(dev, "unable to get dpll ref m2 clk\n");
99bbd48c
KVA
409 return PTR_ERR(clk);
410 }
411 clk_set_rate(clk, 100000000);
412
d65ff52e 413 clk = devm_clk_get(dev, "phy-div");
99bbd48c 414 if (IS_ERR(clk)) {
d65ff52e 415 dev_err(dev, "unable to get phy-div clk\n");
99bbd48c
KVA
416 return PTR_ERR(clk);
417 }
418 clk_set_rate(clk, 100000000);
419
d65ff52e 420 phy->div_clk = devm_clk_get(dev, "div-clk");
99bbd48c 421 if (IS_ERR(phy->div_clk)) {
d65ff52e 422 dev_err(dev, "unable to get div-clk\n");
99bbd48c
KVA
423 return PTR_ERR(phy->div_clk);
424 }
425 } else {
426 phy->div_clk = ERR_PTR(-ENODEV);
57f6ce07
KVA
427 }
428
234738ea
KVA
429 return 0;
430}
431
73bbc78e
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432static int ti_pipe3_get_sysctrl(struct ti_pipe3 *phy)
433{
434 struct device *dev = phy->dev;
435 struct device_node *node = dev->of_node;
436 struct device_node *control_node;
437 struct platform_device *control_pdev;
438
c396a1c7
KVA
439 phy->phy_power_syscon = syscon_regmap_lookup_by_phandle(node,
440 "syscon-phy-power");
441 if (IS_ERR(phy->phy_power_syscon)) {
442 dev_dbg(dev,
443 "can't get syscon-phy-power, using control device\n");
444 phy->phy_power_syscon = NULL;
445 } else {
446 if (of_property_read_u32_index(node,
447 "syscon-phy-power", 1,
448 &phy->power_reg)) {
449 dev_err(dev, "couldn't get power reg. offset\n");
450 return -EINVAL;
451 }
73bbc78e
KVA
452 }
453
c396a1c7
KVA
454 if (!phy->phy_power_syscon) {
455 control_node = of_parse_phandle(node, "ctrl-module", 0);
456 if (!control_node) {
457 dev_err(dev, "Failed to get control device phandle\n");
458 return -EINVAL;
459 }
73bbc78e 460
c396a1c7
KVA
461 control_pdev = of_find_device_by_node(control_node);
462 if (!control_pdev) {
463 dev_err(dev, "Failed to get control device\n");
464 return -EINVAL;
465 }
466
467 phy->control_dev = &control_pdev->dev;
468 }
73bbc78e 469
3f2362c5
KVA
470 if (of_device_is_compatible(node, "ti,phy-pipe3-pcie")) {
471 phy->pcs_syscon = syscon_regmap_lookup_by_phandle(node,
472 "syscon-pcs");
473 if (IS_ERR(phy->pcs_syscon)) {
474 dev_dbg(dev,
475 "can't get syscon-pcs, using omap control\n");
476 phy->pcs_syscon = NULL;
477 } else {
478 if (of_property_read_u32_index(node,
479 "syscon-pcs", 1,
480 &phy->pcie_pcs_reg)) {
481 dev_err(dev,
482 "couldn't get pcie pcs reg. offset\n");
483 return -EINVAL;
484 }
485 }
486 }
487
73bbc78e
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488 if (of_device_is_compatible(node, "ti,phy-pipe3-sata")) {
489 phy->dpll_reset_syscon = syscon_regmap_lookup_by_phandle(node,
490 "syscon-pllreset");
491 if (IS_ERR(phy->dpll_reset_syscon)) {
492 dev_info(dev,
493 "can't get syscon-pllreset, sata dpll won't idle\n");
494 phy->dpll_reset_syscon = NULL;
495 } else {
496 if (of_property_read_u32_index(node,
497 "syscon-pllreset", 1,
498 &phy->dpll_reset_reg)) {
499 dev_err(dev,
500 "couldn't get pllreset reg. offset\n");
501 return -EINVAL;
502 }
503 }
504 }
505
506 return 0;
507}
508
1fe52122
KVA
509static int ti_pipe3_get_pll_base(struct ti_pipe3 *phy)
510{
511 struct resource *res;
512 const struct of_device_id *match;
513 struct device *dev = phy->dev;
514 struct device_node *node = dev->of_node;
515 struct platform_device *pdev = to_platform_device(dev);
516
517 if (of_device_is_compatible(node, "ti,phy-pipe3-pcie"))
518 return 0;
519
520 match = of_match_device(ti_pipe3_id_table, dev);
521 if (!match)
522 return -EINVAL;
523
524 phy->dpll_map = (struct pipe3_dpll_map *)match->data;
525 if (!phy->dpll_map) {
526 dev_err(dev, "no DPLL data\n");
527 return -EINVAL;
528 }
529
530 res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
531 "pll_ctrl");
532 phy->pll_ctrl_base = devm_ioremap_resource(dev, res);
533 if (IS_ERR(phy->pll_ctrl_base))
534 return PTR_ERR(phy->pll_ctrl_base);
535
536 return 0;
537}
538
234738ea
KVA
539static int ti_pipe3_probe(struct platform_device *pdev)
540{
541 struct ti_pipe3 *phy;
542 struct phy *generic_phy;
543 struct phy_provider *phy_provider;
234738ea 544 struct device_node *node = pdev->dev.of_node;
234738ea
KVA
545 struct device *dev = &pdev->dev;
546 int ret;
547
548 phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
549 if (!phy)
550 return -ENOMEM;
551
552 phy->dev = dev;
553
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KVA
554 ret = ti_pipe3_get_pll_base(phy);
555 if (ret)
556 return ret;
234738ea 557
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558 ret = ti_pipe3_get_sysctrl(phy);
559 if (ret)
560 return ret;
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561
562 ret = ti_pipe3_get_clk(phy);
563 if (ret)
564 return ret;
565
57f6ce07 566 platform_set_drvdata(pdev, phy);
d65ff52e 567 pm_runtime_enable(dev);
c934b361
RQ
568
569 /*
570 * Prevent auto-disable of refclk for SATA PHY due to Errata i783
571 */
572 if (of_device_is_compatible(node, "ti,phy-pipe3-sata")) {
573 if (!IS_ERR(phy->refclk)) {
0a0830fe 574 clk_prepare_enable(phy->refclk);
c934b361
RQ
575 phy->sata_refclk_enabled = true;
576 }
577 }
a70143bb 578
d65ff52e 579 generic_phy = devm_phy_create(dev, NULL, &ops);
a70143bb
KVA
580 if (IS_ERR(generic_phy))
581 return PTR_ERR(generic_phy);
582
583 phy_set_drvdata(generic_phy, phy);
cc34ace7
KVA
584
585 ti_pipe3_power_off(generic_phy);
586
d65ff52e 587 phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
a70143bb
KVA
588 if (IS_ERR(phy_provider))
589 return PTR_ERR(phy_provider);
590
57f6ce07
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591 return 0;
592}
593
a70143bb 594static int ti_pipe3_remove(struct platform_device *pdev)
57f6ce07 595{
57f6ce07
KVA
596 pm_runtime_disable(&pdev->dev);
597
598 return 0;
599}
600
0a0830fe 601static int ti_pipe3_enable_clocks(struct ti_pipe3 *phy)
7f33912d 602{
0a0830fe 603 int ret = 0;
7f33912d 604
0a0830fe 605 if (!IS_ERR(phy->refclk)) {
7f33912d
RQ
606 ret = clk_prepare_enable(phy->refclk);
607 if (ret) {
608 dev_err(phy->dev, "Failed to enable refclk %d\n", ret);
609 return ret;
610 }
7f33912d
RQ
611 }
612
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RQ
613 if (!IS_ERR(phy->wkupclk)) {
614 ret = clk_prepare_enable(phy->wkupclk);
615 if (ret) {
616 dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
0a0830fe 617 goto disable_refclk;
1562864f 618 }
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KVA
619 }
620
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KVA
621 if (!IS_ERR(phy->div_clk)) {
622 ret = clk_prepare_enable(phy->div_clk);
623 if (ret) {
624 dev_err(phy->dev, "Failed to enable div_clk %d\n", ret);
0a0830fe 625 goto disable_wkupclk;
99bbd48c
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626 }
627 }
6e738432 628
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629 return 0;
630
0a0830fe 631disable_wkupclk:
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KVA
632 if (!IS_ERR(phy->wkupclk))
633 clk_disable_unprepare(phy->wkupclk);
634
0a0830fe 635disable_refclk:
1562864f
RQ
636 if (!IS_ERR(phy->refclk))
637 clk_disable_unprepare(phy->refclk);
57f6ce07 638
6e738432
RQ
639 return ret;
640}
641
642static void ti_pipe3_disable_clocks(struct ti_pipe3 *phy)
643{
6e738432
RQ
644 if (!IS_ERR(phy->wkupclk))
645 clk_disable_unprepare(phy->wkupclk);
c934b361 646 if (!IS_ERR(phy->refclk)) {
0a0830fe 647 clk_disable_unprepare(phy->refclk);
c934b361
RQ
648 /*
649 * SATA refclk needs an additional disable as we left it
650 * on in probe to avoid Errata i783
651 */
652 if (phy->sata_refclk_enabled) {
653 clk_disable_unprepare(phy->refclk);
654 phy->sata_refclk_enabled = false;
655 }
656 }
657
6e738432
RQ
658 if (!IS_ERR(phy->div_clk))
659 clk_disable_unprepare(phy->div_clk);
6e738432
RQ
660}
661
a70143bb 662static const struct of_device_id ti_pipe3_id_table[] = {
61f54674
RQ
663 {
664 .compatible = "ti,phy-usb3",
665 .data = dpll_map_usb,
666 },
667 {
668 .compatible = "ti,omap-usb3",
669 .data = dpll_map_usb,
670 },
671 {
672 .compatible = "ti,phy-pipe3-sata",
673 .data = dpll_map_sata,
674 },
99bbd48c
KVA
675 {
676 .compatible = "ti,phy-pipe3-pcie",
677 },
57f6ce07
KVA
678 {}
679};
a70143bb 680MODULE_DEVICE_TABLE(of, ti_pipe3_id_table);
57f6ce07 681
a70143bb
KVA
682static struct platform_driver ti_pipe3_driver = {
683 .probe = ti_pipe3_probe,
684 .remove = ti_pipe3_remove,
57f6ce07 685 .driver = {
a70143bb 686 .name = "ti-pipe3",
298fe56e 687 .of_match_table = ti_pipe3_id_table,
57f6ce07
KVA
688 },
689};
690
a70143bb 691module_platform_driver(ti_pipe3_driver);
57f6ce07 692
dd64ad38 693MODULE_ALIAS("platform:ti_pipe3");
57f6ce07 694MODULE_AUTHOR("Texas Instruments Inc.");
a70143bb 695MODULE_DESCRIPTION("TI PIPE3 phy driver");
57f6ce07 696MODULE_LICENSE("GPL v2");