Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
[firefly-linux-kernel-4.4.55.git] / drivers / usb / phy / phy-samsung-usb.h
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
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
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,
244         TYPE_EXYNOS5250,
245 };
246
247 /*
248  * struct samsung_usbphy_drvdata - driver data for various SoC variants
249  * @cpu_type: machine identifier
250  * @devphy_en_mask: device phy enable mask for PHY CONTROL register
251  * @hostphy_en_mask: host phy enable mask for PHY CONTROL register
252  * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from
253  *                     mapped address of system controller.
254  * @hostphy_reg_offset: offset to HOST PHY CONTROL register from
255  *                     mapped address of system controller.
256  *
257  *      Here we have a separate mask for device type phy.
258  *      Having different masks for host and device type phy helps
259  *      in setting independent masks in case of SoCs like S5PV210,
260  *      in which PHY0 and PHY1 enable bits belong to same register
261  *      placed at position 0 and 1 respectively.
262  *      Although for newer SoCs like exynos these bits belong to
263  *      different registers altogether placed at position 0.
264  */
265 struct samsung_usbphy_drvdata {
266         int cpu_type;
267         int devphy_en_mask;
268         int hostphy_en_mask;
269         u32 devphy_reg_offset;
270         u32 hostphy_reg_offset;
271 };
272
273 /*
274  * struct samsung_usbphy - transceiver driver state
275  * @phy: transceiver structure
276  * @plat: platform data
277  * @dev: The parent device supplied to the probe function
278  * @clk: usb phy clock
279  * @regs: usb phy controller registers memory base
280  * @pmuregs: USB device PHY_CONTROL register memory base
281  * @sysreg: USB2.0 PHY_CFG register memory base
282  * @ref_clk_freq: reference clock frequency selection
283  * @drv_data: driver data available for different SoCs
284  * @phy_type: Samsung SoCs specific phy types:  #HOST
285  *                                              #DEVICE
286  * @phy_usage: usage count for phy
287  * @lock: lock for phy operations
288  */
289 struct samsung_usbphy {
290         struct usb_phy  phy;
291         struct samsung_usbphy_data *plat;
292         struct device   *dev;
293         struct clk      *clk;
294         void __iomem    *regs;
295         void __iomem    *pmuregs;
296         void __iomem    *sysreg;
297         int             ref_clk_freq;
298         const struct samsung_usbphy_drvdata *drv_data;
299         enum samsung_usb_phy_type phy_type;
300         atomic_t        phy_usage;
301         spinlock_t      lock;
302 };
303
304 #define phy_to_sphy(x)          container_of((x), struct samsung_usbphy, phy)
305
306 static const struct of_device_id samsung_usbphy_dt_match[];
307
308 static inline const struct samsung_usbphy_drvdata
309 *samsung_usbphy_get_driver_data(struct platform_device *pdev)
310 {
311         if (pdev->dev.of_node) {
312                 const struct of_device_id *match;
313                 match = of_match_node(samsung_usbphy_dt_match,
314                                                         pdev->dev.of_node);
315                 return match->data;
316         }
317
318         return (struct samsung_usbphy_drvdata *)
319                                 platform_get_device_id(pdev)->driver_data;
320 }
321
322 extern int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy);
323 extern void samsung_usbphy_set_isolation(struct samsung_usbphy *sphy, bool on);
324 extern void samsung_usbphy_cfg_sel(struct samsung_usbphy *sphy);
325 extern int samsung_usbphy_set_type(struct usb_phy *phy,
326                                         enum samsung_usb_phy_type phy_type);
327 extern int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy);