Merge tag 'pci-v3.17-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
[linux-2.6-block.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 /* EXYNOS4X12 */
51 #define EXYNOS4X12_PHY_HSIC_CTRL0               (0x04)
52 #define EXYNOS4X12_PHY_HSIC_CTRL1               (0x08)
53
54 #define PHYPWR_NORMAL_MASK_HSIC1                (0x7 << 12)
55 #define PHYPWR_NORMAL_MASK_HSIC0                (0x7 << 9)
56 #define PHYPWR_NORMAL_MASK_PHY1                 (0x7 << 6)
57
58 #define RSTCON_HOSTPHY_SWRST                    (0xf << 3)
59
60 /* EXYNOS5 */
61 #define EXYNOS5_PHY_HOST_CTRL0                  (0x00)
62
63 #define HOST_CTRL0_PHYSWRSTALL                  (0x1 << 31)
64
65 #define HOST_CTRL0_REFCLKSEL_MASK               (0x3 << 19)
66 #define HOST_CTRL0_REFCLKSEL_XTAL               (0x0 << 19)
67 #define HOST_CTRL0_REFCLKSEL_EXTL               (0x1 << 19)
68 #define HOST_CTRL0_REFCLKSEL_CLKCORE            (0x2 << 19)
69
70 #define HOST_CTRL0_FSEL_MASK                    (0x7 << 16)
71 #define HOST_CTRL0_FSEL(_x)                     ((_x) << 16)
72
73 #define FSEL_CLKSEL_50M                         (0x7)
74 #define FSEL_CLKSEL_24M                         (0x5)
75 #define FSEL_CLKSEL_20M                         (0x4)
76 #define FSEL_CLKSEL_19200K                      (0x3)
77 #define FSEL_CLKSEL_12M                         (0x2)
78 #define FSEL_CLKSEL_10M                         (0x1)
79 #define FSEL_CLKSEL_9600K                       (0x0)
80
81 #define HOST_CTRL0_TESTBURNIN                   (0x1 << 11)
82 #define HOST_CTRL0_RETENABLE                    (0x1 << 10)
83 #define HOST_CTRL0_COMMONON_N                   (0x1 << 9)
84 #define HOST_CTRL0_SIDDQ                        (0x1 << 6)
85 #define HOST_CTRL0_FORCESLEEP                   (0x1 << 5)
86 #define HOST_CTRL0_FORCESUSPEND                 (0x1 << 4)
87 #define HOST_CTRL0_WORDINTERFACE                (0x1 << 3)
88 #define HOST_CTRL0_UTMISWRST                    (0x1 << 2)
89 #define HOST_CTRL0_LINKSWRST                    (0x1 << 1)
90 #define HOST_CTRL0_PHYSWRST                     (0x1 << 0)
91
92 #define EXYNOS5_PHY_HOST_TUNE0                  (0x04)
93
94 #define EXYNOS5_PHY_HSIC_CTRL1                  (0x10)
95
96 #define EXYNOS5_PHY_HSIC_TUNE1                  (0x14)
97
98 #define EXYNOS5_PHY_HSIC_CTRL2                  (0x20)
99
100 #define EXYNOS5_PHY_HSIC_TUNE2                  (0x24)
101
102 #define HSIC_CTRL_REFCLKSEL_MASK                (0x3 << 23)
103 #define HSIC_CTRL_REFCLKSEL                     (0x2 << 23)
104
105 #define HSIC_CTRL_REFCLKDIV_MASK                (0x7f << 16)
106 #define HSIC_CTRL_REFCLKDIV(_x)                 ((_x) << 16)
107 #define HSIC_CTRL_REFCLKDIV_12                  (0x24 << 16)
108 #define HSIC_CTRL_REFCLKDIV_15                  (0x1c << 16)
109 #define HSIC_CTRL_REFCLKDIV_16                  (0x1a << 16)
110 #define HSIC_CTRL_REFCLKDIV_19_2                (0x15 << 16)
111 #define HSIC_CTRL_REFCLKDIV_20                  (0x14 << 16)
112
113 #define HSIC_CTRL_SIDDQ                         (0x1 << 6)
114 #define HSIC_CTRL_FORCESLEEP                    (0x1 << 5)
115 #define HSIC_CTRL_FORCESUSPEND                  (0x1 << 4)
116 #define HSIC_CTRL_WORDINTERFACE                 (0x1 << 3)
117 #define HSIC_CTRL_UTMISWRST                     (0x1 << 2)
118 #define HSIC_CTRL_PHYSWRST                      (0x1 << 0)
119
120 #define EXYNOS5_PHY_HOST_EHCICTRL               (0x30)
121
122 #define HOST_EHCICTRL_ENAINCRXALIGN             (0x1 << 29)
123 #define HOST_EHCICTRL_ENAINCR4                  (0x1 << 28)
124 #define HOST_EHCICTRL_ENAINCR8                  (0x1 << 27)
125 #define HOST_EHCICTRL_ENAINCR16                 (0x1 << 26)
126
127 #define EXYNOS5_PHY_HOST_OHCICTRL               (0x34)
128
129 #define HOST_OHCICTRL_SUSPLGCY                  (0x1 << 3)
130 #define HOST_OHCICTRL_APPSTARTCLK               (0x1 << 2)
131 #define HOST_OHCICTRL_CNTSEL                    (0x1 << 1)
132 #define HOST_OHCICTRL_CLKCKTRST                 (0x1 << 0)
133
134 #define EXYNOS5_PHY_OTG_SYS                     (0x38)
135
136 #define OTG_SYS_PHYLINK_SWRESET                 (0x1 << 14)
137 #define OTG_SYS_LINKSWRST_UOTG                  (0x1 << 13)
138 #define OTG_SYS_PHY0_SWRST                      (0x1 << 12)
139
140 #define OTG_SYS_REFCLKSEL_MASK                  (0x3 << 9)
141 #define OTG_SYS_REFCLKSEL_XTAL                  (0x0 << 9)
142 #define OTG_SYS_REFCLKSEL_EXTL                  (0x1 << 9)
143 #define OTG_SYS_REFCLKSEL_CLKCORE               (0x2 << 9)
144
145 #define OTG_SYS_IDPULLUP_UOTG                   (0x1 << 8)
146 #define OTG_SYS_COMMON_ON                       (0x1 << 7)
147
148 #define OTG_SYS_FSEL_MASK                       (0x7 << 4)
149 #define OTG_SYS_FSEL(_x)                        ((_x) << 4)
150
151 #define OTG_SYS_FORCESLEEP                      (0x1 << 3)
152 #define OTG_SYS_OTGDISABLE                      (0x1 << 2)
153 #define OTG_SYS_SIDDQ_UOTG                      (0x1 << 1)
154 #define OTG_SYS_FORCESUSPEND                    (0x1 << 0)
155
156 #define EXYNOS5_PHY_OTG_TUNE                    (0x40)
157
158 /* EXYNOS5: USB 3.0 DRD */
159 #define EXYNOS5_DRD_LINKSYSTEM                  (0x04)
160
161 #define LINKSYSTEM_FLADJ_MASK                   (0x3f << 1)
162 #define LINKSYSTEM_FLADJ(_x)                    ((_x) << 1)
163 #define LINKSYSTEM_XHCI_VERSION_CONTROL         (0x1 << 27)
164
165 #define EXYNOS5_DRD_PHYUTMI                     (0x08)
166
167 #define PHYUTMI_OTGDISABLE                      (0x1 << 6)
168 #define PHYUTMI_FORCESUSPEND                    (0x1 << 1)
169 #define PHYUTMI_FORCESLEEP                      (0x1 << 0)
170
171 #define EXYNOS5_DRD_PHYPIPE                     (0x0c)
172
173 #define EXYNOS5_DRD_PHYCLKRST                   (0x10)
174
175 #define PHYCLKRST_SSC_REFCLKSEL_MASK            (0xff << 23)
176 #define PHYCLKRST_SSC_REFCLKSEL(_x)             ((_x) << 23)
177
178 #define PHYCLKRST_SSC_RANGE_MASK                (0x03 << 21)
179 #define PHYCLKRST_SSC_RANGE(_x)                 ((_x) << 21)
180
181 #define PHYCLKRST_SSC_EN                        (0x1 << 20)
182 #define PHYCLKRST_REF_SSP_EN                    (0x1 << 19)
183 #define PHYCLKRST_REF_CLKDIV2                   (0x1 << 18)
184
185 #define PHYCLKRST_MPLL_MULTIPLIER_MASK          (0x7f << 11)
186 #define PHYCLKRST_MPLL_MULTIPLIER_100MHZ_REF    (0x19 << 11)
187 #define PHYCLKRST_MPLL_MULTIPLIER_50M_REF       (0x02 << 11)
188 #define PHYCLKRST_MPLL_MULTIPLIER_24MHZ_REF     (0x68 << 11)
189 #define PHYCLKRST_MPLL_MULTIPLIER_20MHZ_REF     (0x7d << 11)
190 #define PHYCLKRST_MPLL_MULTIPLIER_19200KHZ_REF  (0x02 << 11)
191
192 #define PHYCLKRST_FSEL_MASK                     (0x3f << 5)
193 #define PHYCLKRST_FSEL(_x)                      ((_x) << 5)
194 #define PHYCLKRST_FSEL_PAD_100MHZ               (0x27 << 5)
195 #define PHYCLKRST_FSEL_PAD_24MHZ                (0x2a << 5)
196 #define PHYCLKRST_FSEL_PAD_20MHZ                (0x31 << 5)
197 #define PHYCLKRST_FSEL_PAD_19_2MHZ              (0x38 << 5)
198
199 #define PHYCLKRST_RETENABLEN                    (0x1 << 4)
200
201 #define PHYCLKRST_REFCLKSEL_MASK                (0x03 << 2)
202 #define PHYCLKRST_REFCLKSEL_PAD_REFCLK          (0x2 << 2)
203 #define PHYCLKRST_REFCLKSEL_EXT_REFCLK          (0x3 << 2)
204
205 #define PHYCLKRST_PORTRESET                     (0x1 << 1)
206 #define PHYCLKRST_COMMONONN                     (0x1 << 0)
207
208 #define EXYNOS5_DRD_PHYREG0                     (0x14)
209 #define EXYNOS5_DRD_PHYREG1                     (0x18)
210
211 #define EXYNOS5_DRD_PHYPARAM0                   (0x1c)
212
213 #define PHYPARAM0_REF_USE_PAD                   (0x1 << 31)
214 #define PHYPARAM0_REF_LOSLEVEL_MASK             (0x1f << 26)
215 #define PHYPARAM0_REF_LOSLEVEL                  (0x9 << 26)
216
217 #define EXYNOS5_DRD_PHYPARAM1                   (0x20)
218
219 #define PHYPARAM1_PCS_TXDEEMPH_MASK             (0x3f << 0)
220 #define PHYPARAM1_PCS_TXDEEMPH                  (0x1c)
221
222 #define EXYNOS5_DRD_PHYTERM                     (0x24)
223
224 #define EXYNOS5_DRD_PHYTEST                     (0x28)
225
226 #define PHYTEST_POWERDOWN_SSP                   (0x1 << 3)
227 #define PHYTEST_POWERDOWN_HSP                   (0x1 << 2)
228
229 #define EXYNOS5_DRD_PHYADP                      (0x2c)
230
231 #define EXYNOS5_DRD_PHYBATCHG                   (0x30)
232
233 #define PHYBATCHG_UTMI_CLKSEL                   (0x1 << 2)
234
235 #define EXYNOS5_DRD_PHYRESUME                   (0x34)
236 #define EXYNOS5_DRD_LINKPORT                    (0x44)
237
238 #ifndef MHZ
239 #define MHZ (1000*1000)
240 #endif
241
242 #ifndef KHZ
243 #define KHZ (1000)
244 #endif
245
246 #define EXYNOS_USBHOST_PHY_CTRL_OFFSET          (0x4)
247 #define S3C64XX_USBPHY_ENABLE                   (0x1 << 16)
248 #define EXYNOS_USBPHY_ENABLE                    (0x1 << 0)
249 #define EXYNOS_USB20PHY_CFG_HOST_LINK           (0x1 << 0)
250
251 enum samsung_cpu_type {
252         TYPE_S3C64XX,
253         TYPE_EXYNOS4210,
254         TYPE_EXYNOS4X12,
255         TYPE_EXYNOS5250,
256 };
257
258 struct samsung_usbphy;
259
260 /*
261  * struct samsung_usbphy_drvdata - driver data for various SoC variants
262  * @cpu_type: machine identifier
263  * @devphy_en_mask: device phy enable mask for PHY CONTROL register
264  * @hostphy_en_mask: host phy enable mask for PHY CONTROL register
265  * @devphy_reg_offset: offset to DEVICE PHY CONTROL register from
266  *                     mapped address of system controller.
267  * @hostphy_reg_offset: offset to HOST PHY CONTROL register from
268  *                     mapped address of system controller.
269  *
270  *      Here we have a separate mask for device type phy.
271  *      Having different masks for host and device type phy helps
272  *      in setting independent masks in case of SoCs like S5PV210,
273  *      in which PHY0 and PHY1 enable bits belong to same register
274  *      placed at position 0 and 1 respectively.
275  *      Although for newer SoCs like exynos these bits belong to
276  *      different registers altogether placed at position 0.
277  */
278 struct samsung_usbphy_drvdata {
279         int cpu_type;
280         int devphy_en_mask;
281         int hostphy_en_mask;
282         u32 devphy_reg_offset;
283         u32 hostphy_reg_offset;
284         int (*rate_to_clksel)(struct samsung_usbphy *, unsigned long);
285         void (*set_isolation)(struct samsung_usbphy *, bool);
286         void (*phy_enable)(struct samsung_usbphy *);
287         void (*phy_disable)(struct samsung_usbphy *);
288 };
289
290 /*
291  * struct samsung_usbphy - transceiver driver state
292  * @phy: transceiver structure
293  * @plat: platform data
294  * @dev: The parent device supplied to the probe function
295  * @clk: usb phy clock
296  * @regs: usb phy controller registers memory base
297  * @pmuregs: USB device PHY_CONTROL register memory base
298  * @sysreg: USB2.0 PHY_CFG register memory base
299  * @ref_clk_freq: reference clock frequency selection
300  * @drv_data: driver data available for different SoCs
301  * @phy_type: Samsung SoCs specific phy types:  #HOST
302  *                                              #DEVICE
303  * @phy_usage: usage count for phy
304  * @lock: lock for phy operations
305  */
306 struct samsung_usbphy {
307         struct usb_phy  phy;
308         struct samsung_usbphy_data *plat;
309         struct device   *dev;
310         struct clk      *clk;
311         void __iomem    *regs;
312         void __iomem    *pmuregs;
313         void __iomem    *sysreg;
314         int             ref_clk_freq;
315         const struct samsung_usbphy_drvdata *drv_data;
316         enum samsung_usb_phy_type phy_type;
317         atomic_t        phy_usage;
318         spinlock_t      lock;
319 };
320
321 #define phy_to_sphy(x)          container_of((x), struct samsung_usbphy, phy)
322
323 static const struct of_device_id samsung_usbphy_dt_match[];
324
325 static inline const struct samsung_usbphy_drvdata
326 *samsung_usbphy_get_driver_data(struct platform_device *pdev)
327 {
328         if (pdev->dev.of_node) {
329                 const struct of_device_id *match;
330                 match = of_match_node(samsung_usbphy_dt_match,
331                                                         pdev->dev.of_node);
332                 return match->data;
333         }
334
335         return (struct samsung_usbphy_drvdata *)
336                                 platform_get_device_id(pdev)->driver_data;
337 }
338
339 extern int samsung_usbphy_parse_dt(struct samsung_usbphy *sphy);
340 extern void samsung_usbphy_set_isolation_4210(struct samsung_usbphy *sphy,
341                                                                 bool on);
342 extern void samsung_usbphy_cfg_sel(struct samsung_usbphy *sphy);
343 extern int samsung_usbphy_set_type(struct usb_phy *phy,
344                                         enum samsung_usb_phy_type phy_type);
345 extern int samsung_usbphy_get_refclk_freq(struct samsung_usbphy *sphy);
346 extern int samsung_usbphy_rate_to_clksel_64xx(struct samsung_usbphy *sphy,
347                                                         unsigned long rate);
348 extern int samsung_usbphy_rate_to_clksel_4x12(struct samsung_usbphy *sphy,
349                                                         unsigned long rate);