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dc2377d0 VG |
1 | /* linux/drivers/usb/phy/phy-samsung-usb.h |
2 | * | |
3 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
4 | * http://www.samsung.com | |
5 | * | |
6 | * Samsung USB-PHY transceiver; talks to S3C HS OTG controller, EHCI-S5P and | |
7 | * OHCI-EXYNOS controllers. | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/usb/phy.h> | |
20 | ||
21 | /* Register definitions */ | |
22 | ||
23 | #define SAMSUNG_PHYPWR (0x00) | |
24 | ||
25 | #define PHYPWR_NORMAL_MASK (0x19 << 0) | |
26 | #define PHYPWR_OTG_DISABLE (0x1 << 4) | |
27 | #define PHYPWR_ANALOG_POWERDOWN (0x1 << 3) | |
28 | #define PHYPWR_FORCE_SUSPEND (0x1 << 1) | |
29 | /* For Exynos4 */ | |
30 | #define PHYPWR_NORMAL_MASK_PHY0 (0x39 << 0) | |
31 | #define PHYPWR_SLEEP_PHY0 (0x1 << 5) | |
32 | ||
33 | #define SAMSUNG_PHYCLK (0x04) | |
34 | ||
35 | #define PHYCLK_MODE_USB11 (0x1 << 6) | |
36 | #define PHYCLK_EXT_OSC (0x1 << 5) | |
37 | #define PHYCLK_COMMON_ON_N (0x1 << 4) | |
38 | #define PHYCLK_ID_PULL (0x1 << 2) | |
39 | #define PHYCLK_CLKSEL_MASK (0x3 << 0) | |
40 | #define PHYCLK_CLKSEL_48M (0x0 << 0) | |
41 | #define PHYCLK_CLKSEL_12M (0x2 << 0) | |
42 | #define PHYCLK_CLKSEL_24M (0x3 << 0) | |
43 | ||
44 | #define SAMSUNG_RSTCON (0x08) | |
45 | ||
46 | #define RSTCON_PHYLINK_SWRST (0x1 << 2) | |
47 | #define RSTCON_HLINK_SWRST (0x1 << 1) | |
48 | #define RSTCON_SWRST (0x1 << 0) | |
49 | ||
50 | /* EXYNOS5 */ | |
51 | #define EXYNOS5_PHY_HOST_CTRL0 (0x00) | |
52 | ||
53 | #define HOST_CTRL0_PHYSWRSTALL (0x1 << 31) | |
54 | ||
55 | #define HOST_CTRL0_REFCLKSEL_MASK (0x3 << 19) | |
56 | #define HOST_CTRL0_REFCLKSEL_XTAL (0x0 << 19) | |
57 | #define HOST_CTRL0_REFCLKSEL_EXTL (0x1 << 19) | |
58 | #define HOST_CTRL0_REFCLKSEL_CLKCORE (0x2 << 19) | |
59 | ||
60 | #define HOST_CTRL0_FSEL_MASK (0x7 << 16) | |
61 | #define HOST_CTRL0_FSEL(_x) ((_x) << 16) | |
62 | ||
63 | #define FSEL_CLKSEL_50M (0x7) | |
64 | #define FSEL_CLKSEL_24M (0x5) | |
65 | #define FSEL_CLKSEL_20M (0x4) | |
66 | #define FSEL_CLKSEL_19200K (0x3) | |
67 | #define FSEL_CLKSEL_12M (0x2) | |
68 | #define FSEL_CLKSEL_10M (0x1) | |
69 | #define FSEL_CLKSEL_9600K (0x0) | |
70 | ||
71 | #define HOST_CTRL0_TESTBURNIN (0x1 << 11) | |
72 | #define HOST_CTRL0_RETENABLE (0x1 << 10) | |
73 | #define HOST_CTRL0_COMMONON_N (0x1 << 9) | |
74 | #define HOST_CTRL0_SIDDQ (0x1 << 6) | |
75 | #define HOST_CTRL0_FORCESLEEP (0x1 << 5) | |
76 | #define HOST_CTRL0_FORCESUSPEND (0x1 << 4) | |
77 | #define HOST_CTRL0_WORDINTERFACE (0x1 << 3) | |
78 | #define HOST_CTRL0_UTMISWRST (0x1 << 2) | |
79 | #define HOST_CTRL0_LINKSWRST (0x1 << 1) | |
80 | #define HOST_CTRL0_PHYSWRST (0x1 << 0) | |
81 | ||
82 | #define EXYNOS5_PHY_HOST_TUNE0 (0x04) | |
83 | ||
84 | #define EXYNOS5_PHY_HSIC_CTRL1 (0x10) | |
85 | ||
86 | #define EXYNOS5_PHY_HSIC_TUNE1 (0x14) | |
87 | ||
88 | #define EXYNOS5_PHY_HSIC_CTRL2 (0x20) | |
89 | ||
90 | #define EXYNOS5_PHY_HSIC_TUNE2 (0x24) | |
91 | ||
92 | #define HSIC_CTRL_REFCLKSEL_MASK (0x3 << 23) | |
93 | #define HSIC_CTRL_REFCLKSEL (0x2 << 23) | |
94 | ||
95 | #define HSIC_CTRL_REFCLKDIV_MASK (0x7f << 16) | |
96 | #define HSIC_CTRL_REFCLKDIV(_x) ((_x) << 16) | |
97 | #define HSIC_CTRL_REFCLKDIV_12 (0x24 << 16) | |
98 | #define HSIC_CTRL_REFCLKDIV_15 (0x1c << 16) | |
99 | #define HSIC_CTRL_REFCLKDIV_16 (0x1a << 16) | |
100 | #define HSIC_CTRL_REFCLKDIV_19_2 (0x15 << 16) | |
101 | #define HSIC_CTRL_REFCLKDIV_20 (0x14 << 16) | |
102 | ||
103 | #define HSIC_CTRL_SIDDQ (0x1 << 6) | |
104 | #define HSIC_CTRL_FORCESLEEP (0x1 << 5) | |
105 | #define HSIC_CTRL_FORCESUSPEND (0x1 << 4) | |
106 | #define HSIC_CTRL_WORDINTERFACE (0x1 << 3) | |
107 | #define HSIC_CTRL_UTMISWRST (0x1 << 2) | |
108 | #define HSIC_CTRL_PHYSWRST (0x1 << 0) | |
109 | ||
110 | #define EXYNOS5_PHY_HOST_EHCICTRL (0x30) | |
111 | ||
112 | #define HOST_EHCICTRL_ENAINCRXALIGN (0x1 << 29) | |
113 | #define HOST_EHCICTRL_ENAINCR4 (0x1 << 28) | |
114 | #define HOST_EHCICTRL_ENAINCR8 (0x1 << 27) | |
115 | #define HOST_EHCICTRL_ENAINCR16 (0x1 << 26) | |
116 | ||
117 | #define EXYNOS5_PHY_HOST_OHCICTRL (0x34) | |
118 | ||
119 | #define HOST_OHCICTRL_SUSPLGCY (0x1 << 3) | |
120 | #define HOST_OHCICTRL_APPSTARTCLK (0x1 << 2) | |
121 | #define HOST_OHCICTRL_CNTSEL (0x1 << 1) | |
122 | #define HOST_OHCICTRL_CLKCKTRST (0x1 << 0) | |
123 | ||
124 | #define EXYNOS5_PHY_OTG_SYS (0x38) | |
125 | ||
126 | #define OTG_SYS_PHYLINK_SWRESET (0x1 << 14) | |
127 | #define OTG_SYS_LINKSWRST_UOTG (0x1 << 13) | |
128 | #define OTG_SYS_PHY0_SWRST (0x1 << 12) | |
129 | ||
130 | #define OTG_SYS_REFCLKSEL_MASK (0x3 << 9) | |
131 | #define OTG_SYS_REFCLKSEL_XTAL (0x0 << 9) | |
132 | #define OTG_SYS_REFCLKSEL_EXTL (0x1 << 9) | |
133 | #define OTG_SYS_REFCLKSEL_CLKCORE (0x2 << 9) | |
134 | ||
135 | #define OTG_SYS_IDPULLUP_UOTG (0x1 << 8) | |
136 | #define OTG_SYS_COMMON_ON (0x1 << 7) | |
137 | ||
138 | #define OTG_SYS_FSEL_MASK (0x7 << 4) | |
139 | #define OTG_SYS_FSEL(_x) ((_x) << 4) | |
140 | ||
141 | #define OTG_SYS_FORCESLEEP (0x1 << 3) | |
142 | #define OTG_SYS_OTGDISABLE (0x1 << 2) | |
143 | #define OTG_SYS_SIDDQ_UOTG (0x1 << 1) | |
144 | #define OTG_SYS_FORCESUSPEND (0x1 << 0) | |
145 | ||
146 | #define EXYNOS5_PHY_OTG_TUNE (0x40) | |
147 | ||
b5276758 VG |
148 | /* EXYNOS5: USB 3.0 DRD */ |
149 | #define EXYNOS5_DRD_LINKSYSTEM (0x04) | |
150 | ||
151 | #define LINKSYSTEM_FLADJ_MASK (0x3f << 1) | |
152 | #define LINKSYSTEM_FLADJ(_x) ((_x) << 1) | |
153 | #define LINKSYSTEM_XHCI_VERSION_CONTROL (0x1 << 27) | |
154 | ||
155 | #define EXYNOS5_DRD_PHYUTMI (0x08) | |
156 | ||
157 | #define PHYUTMI_OTGDISABLE (0x1 << 6) | |
158 | #define PHYUTMI_FORCESUSPEND (0x1 << 1) | |
159 | #define PHYUTMI_FORCESLEEP (0x1 << 0) | |
160 | ||
161 | #define EXYNOS5_DRD_PHYPIPE (0x0c) | |
162 | ||
163 | #define EXYNOS5_DRD_PHYCLKRST (0x10) | |
164 | ||
165 | #define PHYCLKRST_SSC_REFCLKSEL_MASK (0xff << 23) | |
166 | #define PHYCLKRST_SSC_REFCLKSEL(_x) ((_x) << 23) | |
167 | ||
168 | #define PHYCLKRST_SSC_RANGE_MASK (0x03 << 21) | |
169 | #define PHYCLKRST_SSC_RANGE(_x) ((_x) << 21) | |
170 | ||
171 | #define PHYCLKRST_SSC_EN (0x1 << 20) | |
172 | #define PHYCLKRST_REF_SSP_EN (0x1 << 19) | |
173 | #define PHYCLKRST_REF_CLKDIV2 (0x1 << 18) | |
174 | ||
175 | #define PHYCLKRST_MPLL_MULTIPLIER_MASK (0x7f << 11) | |
176 | #define PHYCLKRST_MPLL_MULTIPLIER_100MHZ_REF (0x19 << 11) | |
177 | #define PHYCLKRST_MPLL_MULTIPLIER_50M_REF (0x02 << 11) | |
178 | #define PHYCLKRST_MPLL_MULTIPLIER_24MHZ_REF (0x68 << 11) | |
179 | #define PHYCLKRST_MPLL_MULTIPLIER_20MHZ_REF (0x7d << 11) | |
180 | #define PHYCLKRST_MPLL_MULTIPLIER_19200KHZ_REF (0x02 << 11) | |
181 | ||
182 | #define PHYCLKRST_FSEL_MASK (0x3f << 5) | |
183 | #define PHYCLKRST_FSEL(_x) ((_x) << 5) | |
184 | #define PHYCLKRST_FSEL_PAD_100MHZ (0x27 << 5) | |
185 | #define PHYCLKRST_FSEL_PAD_24MHZ (0x2a << 5) | |
186 | #define PHYCLKRST_FSEL_PAD_20MHZ (0x31 << 5) | |
187 | #define PHYCLKRST_FSEL_PAD_19_2MHZ (0x38 << 5) | |
188 | ||
189 | #define PHYCLKRST_RETENABLEN (0x1 << 4) | |
190 | ||
191 | #define PHYCLKRST_REFCLKSEL_MASK (0x03 << 2) | |
192 | #define PHYCLKRST_REFCLKSEL_PAD_REFCLK (0x2 << 2) | |
193 | #define PHYCLKRST_REFCLKSEL_EXT_REFCLK (0x3 << 2) | |
194 | ||
195 | #define PHYCLKRST_PORTRESET (0x1 << 1) | |
196 | #define PHYCLKRST_COMMONONN (0x1 << 0) | |
197 | ||
198 | #define EXYNOS5_DRD_PHYREG0 (0x14) | |
199 | #define EXYNOS5_DRD_PHYREG1 (0x18) | |
200 | ||
201 | #define EXYNOS5_DRD_PHYPARAM0 (0x1c) | |
202 | ||
203 | #define PHYPARAM0_REF_USE_PAD (0x1 << 31) | |
204 | #define PHYPARAM0_REF_LOSLEVEL_MASK (0x1f << 26) | |
205 | #define PHYPARAM0_REF_LOSLEVEL (0x9 << 26) | |
206 | ||
207 | #define EXYNOS5_DRD_PHYPARAM1 (0x20) | |
208 | ||
209 | #define PHYPARAM1_PCS_TXDEEMPH_MASK (0x1f << 0) | |
210 | #define PHYPARAM1_PCS_TXDEEMPH (0x1c) | |
211 | ||
212 | #define EXYNOS5_DRD_PHYTERM (0x24) | |
213 | ||
214 | #define EXYNOS5_DRD_PHYTEST (0x28) | |
215 | ||
216 | #define PHYTEST_POWERDOWN_SSP (0x1 << 3) | |
217 | #define PHYTEST_POWERDOWN_HSP (0x1 << 2) | |
218 | ||
219 | #define EXYNOS5_DRD_PHYADP (0x2c) | |
220 | ||
221 | #define EXYNOS5_DRD_PHYBATCHG (0x30) | |
222 | ||
223 | #define PHYBATCHG_UTMI_CLKSEL (0x1 << 2) | |
224 | ||
225 | #define EXYNOS5_DRD_PHYRESUME (0x34) | |
226 | #define EXYNOS5_DRD_LINKPORT (0x44) | |
227 | ||
dc2377d0 VG |
228 | #ifndef MHZ |
229 | #define MHZ (1000*1000) | |
230 | #endif | |
231 | ||
232 | #ifndef KHZ | |
233 | #define KHZ (1000) | |
234 | #endif | |
235 | ||
236 | #define EXYNOS_USBHOST_PHY_CTRL_OFFSET (0x4) | |
237 | #define S3C64XX_USBPHY_ENABLE (0x1 << 16) | |
238 | #define EXYNOS_USBPHY_ENABLE (0x1 << 0) | |
239 | #define EXYNOS_USB20PHY_CFG_HOST_LINK (0x1 << 0) | |
240 | ||
241 | enum samsung_cpu_type { | |
242 | TYPE_S3C64XX, | |
243 | TYPE_EXYNOS4210, | |
1b635f0f | 244 | TYPE_EXYNOS4X12, |
dc2377d0 VG |
245 | TYPE_EXYNOS5250, |
246 | }; | |
247 | ||
0aa823a2 TF |
248 | struct samsung_usbphy; |
249 | ||
dc2377d0 VG |
250 | /* |
251 | * struct samsung_usbphy_drvdata - driver data for various SoC variants | |
252 | * @cpu_type: machine identifier | |
253 | * @devphy_en_mask: device phy enable mask for PHY CONTROL register | |
254 | * @hostphy_en_mask: host phy enable mask for PHY CONTROL register | |
255 | * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from | |
256 | * mapped address of system controller. | |
257 | * @hostphy_reg_offset: offset to HOST PHY CONTROL register from | |
258 | * mapped address of system controller. | |
259 | * | |
260 | * Here we have a separate mask for device type phy. | |
261 | * Having different masks for host and device type phy helps | |
262 | * in setting independent masks in case of SoCs like S5PV210, | |
263 | * in which PHY0 and PHY1 enable bits belong to same register | |
264 | * placed at position 0 and 1 respectively. | |
265 | * Although for newer SoCs like exynos these bits belong to | |
266 | * different registers altogether placed at position 0. | |
267 | */ | |
268 | struct samsung_usbphy_drvdata { | |
269 | int cpu_type; | |
270 | int devphy_en_mask; | |
271 | int hostphy_en_mask; | |
272 | u32 devphy_reg_offset; | |
273 | u32 hostphy_reg_offset; | |
0aa823a2 | 274 | int (*rate_to_clksel)(struct samsung_usbphy *, unsigned long); |
3f339074 | 275 | void (*set_isolation)(struct samsung_usbphy *, bool); |
84035f09 TF |
276 | void (*phy_enable)(struct samsung_usbphy *); |
277 | void (*phy_disable)(struct samsung_usbphy *); | |
dc2377d0 VG |
278 | }; |
279 | ||
280 | /* | |
281 | * struct samsung_usbphy - transceiver driver state | |
282 | * @phy: transceiver structure | |
283 | * @plat: platform data | |
284 | * @dev: The parent device supplied to the probe function | |
285 | * @clk: usb phy clock | |
286 | * @regs: usb phy controller registers memory base | |
287 | * @pmuregs: USB device PHY_CONTROL register memory base | |
288 | * @sysreg: USB2.0 PHY_CFG register memory base | |
289 | * @ref_clk_freq: reference clock frequency selection | |
290 | * @drv_data: driver data available for different SoCs | |
291 | * @phy_type: Samsung SoCs specific phy types: #HOST | |
292 | * #DEVICE | |
293 | * @phy_usage: usage count for phy | |
294 | * @lock: lock for phy operations | |
295 | */ | |
296 | struct samsung_usbphy { | |
297 | struct usb_phy phy; | |
298 | struct samsung_usbphy_data *plat; | |
299 | struct device *dev; | |
300 | struct clk *clk; | |
301 | void __iomem *regs; | |
302 | void __iomem *pmuregs; | |
303 | void __iomem *sysreg; | |
304 | int ref_clk_freq; | |
305 | const struct samsung_usbphy_drvdata *drv_data; | |
306 | enum samsung_usb_phy_type phy_type; | |
307 | atomic_t phy_usage; | |
308 | spinlock_t lock; | |
309 | }; | |
310 | ||
311 | #define phy_to_sphy(x) container_of((x), struct samsung_usbphy, phy) | |
312 | ||
313 | static const struct of_device_id samsung_usbphy_dt_match[]; | |
314 | ||
315 | static inline const struct samsung_usbphy_drvdata | |
316 | *samsung_usbphy_get_driver_data(struct platform_device *pdev) | |
317 | { | |
318 | if (pdev->dev.of_node) { | |
319 | const struct of_device_id *match; | |
320 | match = of_match_node(samsung_usbphy_dt_match, | |
321 | pdev->dev.of_node); | |
322 | return match->data; | |
323 | } | |
324 | ||
325 | return (struct samsung_usbphy_drvdata *) | |
326 | platform_get_device_id(pdev)->driver_data; | |
327 | } | |
328 | ||
329 | extern int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy); | |
3f339074 TF |
330 | extern void samsung_usbphy_set_isolation_4210(struct samsung_usbphy *sphy, |
331 | bool on); | |
dc2377d0 VG |
332 | extern void samsung_usbphy_cfg_sel(struct samsung_usbphy *sphy); |
333 | extern int samsung_usbphy_set_type(struct usb_phy *phy, | |
334 | enum samsung_usb_phy_type phy_type); | |
335 | extern int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy); | |
0aa823a2 TF |
336 | extern int samsung_usbphy_rate_to_clksel_64xx(struct samsung_usbphy *sphy, |
337 | unsigned long rate); | |
338 | extern int samsung_usbphy_rate_to_clksel_4x12(struct samsung_usbphy *sphy, | |
339 | unsigned long rate); |