Commit | Line | Data |
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126512e3 AG |
1 | /* |
2 | * Setup platform devices needed by the Freescale multi-port host | |
3 | * and/or dual-role USB controller modules based on the description | |
4 | * in flat device tree. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/platform_device.h> | |
14 | #include <linux/fsl_devices.h> | |
15 | #include <linux/err.h> | |
16 | #include <linux/io.h> | |
17 | #include <linux/of_platform.h> | |
230f7ede | 18 | #include <linux/clk.h> |
6eb0de82 | 19 | #include <linux/module.h> |
126512e3 AG |
20 | |
21 | struct fsl_usb2_dev_data { | |
22 | char *dr_mode; /* controller mode */ | |
23 | char *drivers[3]; /* drivers to instantiate for this mode */ | |
24 | enum fsl_usb2_operating_modes op_mode; /* operating mode */ | |
25 | }; | |
26 | ||
660479aa | 27 | static struct fsl_usb2_dev_data dr_mode_data[] = { |
126512e3 AG |
28 | { |
29 | .dr_mode = "host", | |
30 | .drivers = { "fsl-ehci", NULL, NULL, }, | |
31 | .op_mode = FSL_USB2_DR_HOST, | |
32 | }, | |
33 | { | |
34 | .dr_mode = "otg", | |
35 | .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", }, | |
36 | .op_mode = FSL_USB2_DR_OTG, | |
37 | }, | |
38 | { | |
39 | .dr_mode = "peripheral", | |
40 | .drivers = { "fsl-usb2-udc", NULL, NULL, }, | |
41 | .op_mode = FSL_USB2_DR_DEVICE, | |
42 | }, | |
43 | }; | |
44 | ||
660479aa | 45 | static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np) |
126512e3 AG |
46 | { |
47 | const unsigned char *prop; | |
48 | int i; | |
49 | ||
50 | prop = of_get_property(np, "dr_mode", NULL); | |
51 | if (prop) { | |
52 | for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) { | |
53 | if (!strcmp(prop, dr_mode_data[i].dr_mode)) | |
54 | return &dr_mode_data[i]; | |
55 | } | |
56 | } | |
57 | pr_warn("%s: Invalid 'dr_mode' property, fallback to host mode\n", | |
58 | np->full_name); | |
59 | return &dr_mode_data[0]; /* mode not specified, use host */ | |
60 | } | |
61 | ||
41ac7b3a | 62 | static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type) |
126512e3 AG |
63 | { |
64 | if (!phy_type) | |
65 | return FSL_USB2_PHY_NONE; | |
66 | if (!strcasecmp(phy_type, "ulpi")) | |
67 | return FSL_USB2_PHY_ULPI; | |
68 | if (!strcasecmp(phy_type, "utmi")) | |
69 | return FSL_USB2_PHY_UTMI; | |
70 | if (!strcasecmp(phy_type, "utmi_wide")) | |
71 | return FSL_USB2_PHY_UTMI_WIDE; | |
6009d95e NB |
72 | if (!strcasecmp(phy_type, "utmi_dual")) |
73 | return FSL_USB2_PHY_UTMI_DUAL; | |
126512e3 AG |
74 | if (!strcasecmp(phy_type, "serial")) |
75 | return FSL_USB2_PHY_SERIAL; | |
76 | ||
77 | return FSL_USB2_PHY_NONE; | |
78 | } | |
79 | ||
660479aa | 80 | static struct platform_device *fsl_usb2_device_register( |
126512e3 AG |
81 | struct platform_device *ofdev, |
82 | struct fsl_usb2_platform_data *pdata, | |
83 | const char *name, int id) | |
84 | { | |
85 | struct platform_device *pdev; | |
86 | const struct resource *res = ofdev->resource; | |
87 | unsigned int num = ofdev->num_resources; | |
88 | int retval; | |
89 | ||
90 | pdev = platform_device_alloc(name, id); | |
91 | if (!pdev) { | |
92 | retval = -ENOMEM; | |
93 | goto error; | |
94 | } | |
95 | ||
96 | pdev->dev.parent = &ofdev->dev; | |
97 | ||
98 | pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; | |
126512e3 AG |
99 | *pdev->dev.dma_mask = *ofdev->dev.dma_mask; |
100 | ||
101 | retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); | |
102 | if (retval) | |
103 | goto error; | |
104 | ||
105 | if (num) { | |
106 | retval = platform_device_add_resources(pdev, res, num); | |
107 | if (retval) | |
108 | goto error; | |
109 | } | |
110 | ||
111 | retval = platform_device_add(pdev); | |
112 | if (retval) | |
113 | goto error; | |
114 | ||
115 | return pdev; | |
116 | ||
117 | error: | |
118 | platform_device_put(pdev); | |
119 | return ERR_PTR(retval); | |
120 | } | |
121 | ||
122 | static const struct of_device_id fsl_usb2_mph_dr_of_match[]; | |
123 | ||
38aa4200 | 124 | static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np) |
58c559e6 | 125 | { |
38aa4200 | 126 | enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE; |
58c559e6 RM |
127 | |
128 | /* | |
129 | * returns 1 for usb controller version 1.6 | |
130 | * returns 2 for usb controller version 2.2 | |
d7c444e5 | 131 | * returns 3 for usb controller version 2.4 |
138c3f03 | 132 | * returns 4 for usb controller version 2.5 |
58c559e6 RM |
133 | * returns 0 otherwise |
134 | */ | |
135 | if (of_device_is_compatible(np, "fsl-usb2-dr")) { | |
136 | if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6")) | |
137 | ver = FSL_USB_VER_1_6; | |
138 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2")) | |
139 | ver = FSL_USB_VER_2_2; | |
e98b6a4f RM |
140 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4")) |
141 | ver = FSL_USB_VER_2_4; | |
138c3f03 NB |
142 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5")) |
143 | ver = FSL_USB_VER_2_5; | |
58c559e6 RM |
144 | else /* for previous controller versions */ |
145 | ver = FSL_USB_VER_OLD; | |
146 | ||
38aa4200 | 147 | if (ver > FSL_USB_VER_NONE) |
58c559e6 RM |
148 | return ver; |
149 | } | |
150 | ||
7c1029ba AG |
151 | if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr")) |
152 | return FSL_USB_VER_OLD; | |
153 | ||
58c559e6 RM |
154 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { |
155 | if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6")) | |
156 | ver = FSL_USB_VER_1_6; | |
157 | else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2")) | |
158 | ver = FSL_USB_VER_2_2; | |
d7c444e5 NB |
159 | else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4")) |
160 | ver = FSL_USB_VER_2_4; | |
138c3f03 NB |
161 | else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5")) |
162 | ver = FSL_USB_VER_2_5; | |
58c559e6 RM |
163 | else /* for previous controller versions */ |
164 | ver = FSL_USB_VER_OLD; | |
165 | } | |
166 | ||
167 | return ver; | |
168 | } | |
169 | ||
41ac7b3a | 170 | static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) |
126512e3 AG |
171 | { |
172 | struct device_node *np = ofdev->dev.of_node; | |
173 | struct platform_device *usb_dev; | |
174 | struct fsl_usb2_platform_data data, *pdata; | |
175 | struct fsl_usb2_dev_data *dev_data; | |
176 | const struct of_device_id *match; | |
177 | const unsigned char *prop; | |
178 | static unsigned int idx; | |
179 | int i; | |
180 | ||
181 | if (!of_device_is_available(np)) | |
182 | return -ENODEV; | |
183 | ||
184 | match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); | |
185 | if (!match) | |
186 | return -ENODEV; | |
187 | ||
188 | pdata = &data; | |
189 | if (match->data) | |
190 | memcpy(pdata, match->data, sizeof(data)); | |
191 | else | |
192 | memset(pdata, 0, sizeof(data)); | |
193 | ||
194 | dev_data = get_dr_mode_data(np); | |
195 | ||
196 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { | |
197 | if (of_get_property(np, "port0", NULL)) | |
198 | pdata->port_enables |= FSL_USB2_PORT0_ENABLED; | |
199 | ||
200 | if (of_get_property(np, "port1", NULL)) | |
201 | pdata->port_enables |= FSL_USB2_PORT1_ENABLED; | |
202 | ||
203 | pdata->operating_mode = FSL_USB2_MPH_HOST; | |
204 | } else { | |
230f7ede AG |
205 | if (of_get_property(np, "fsl,invert-drvvbus", NULL)) |
206 | pdata->invert_drvvbus = 1; | |
207 | ||
208 | if (of_get_property(np, "fsl,invert-pwr-fault", NULL)) | |
209 | pdata->invert_pwr_fault = 1; | |
210 | ||
126512e3 AG |
211 | /* setup mode selected in the device tree */ |
212 | pdata->operating_mode = dev_data->op_mode; | |
213 | } | |
214 | ||
215 | prop = of_get_property(np, "phy_type", NULL); | |
216 | pdata->phy_mode = determine_usb_phy(prop); | |
58c559e6 RM |
217 | pdata->controller_ver = usb_get_ver_info(np); |
218 | ||
523f1dec NB |
219 | /* Activate Erratum by reading property in device tree */ |
220 | if (of_get_property(np, "fsl,usb-erratum-a007792", NULL)) | |
221 | pdata->has_fsl_erratum_a007792 = 1; | |
222 | else | |
223 | pdata->has_fsl_erratum_a007792 = 0; | |
f8786a91 NB |
224 | if (of_get_property(np, "fsl,usb-erratum-a005275", NULL)) |
225 | pdata->has_fsl_erratum_a005275 = 1; | |
226 | else | |
227 | pdata->has_fsl_erratum_a005275 = 0; | |
523f1dec | 228 | |
f4fdfaa2 NB |
229 | /* |
230 | * Determine whether phy_clk_valid needs to be checked | |
231 | * by reading property in device tree | |
232 | */ | |
233 | if (of_get_property(np, "phy-clk-valid", NULL)) | |
234 | pdata->check_phy_clk_valid = 1; | |
235 | else | |
236 | pdata->check_phy_clk_valid = 0; | |
237 | ||
58c559e6 | 238 | if (pdata->have_sysif_regs) { |
38aa4200 | 239 | if (pdata->controller_ver == FSL_USB_VER_NONE) { |
58c559e6 RM |
240 | dev_warn(&ofdev->dev, "Could not get controller version\n"); |
241 | return -ENODEV; | |
242 | } | |
243 | } | |
126512e3 AG |
244 | |
245 | for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { | |
246 | if (!dev_data->drivers[i]) | |
247 | continue; | |
248 | usb_dev = fsl_usb2_device_register(ofdev, pdata, | |
249 | dev_data->drivers[i], idx); | |
250 | if (IS_ERR(usb_dev)) { | |
251 | dev_err(&ofdev->dev, "Can't register usb device\n"); | |
252 | return PTR_ERR(usb_dev); | |
253 | } | |
254 | } | |
255 | idx++; | |
256 | return 0; | |
257 | } | |
258 | ||
fb4e98ab | 259 | static int __unregister_subdev(struct device *dev, void *d) |
126512e3 AG |
260 | { |
261 | platform_device_unregister(to_platform_device(dev)); | |
262 | return 0; | |
263 | } | |
264 | ||
fb4e98ab | 265 | static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) |
126512e3 AG |
266 | { |
267 | device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); | |
268 | return 0; | |
269 | } | |
270 | ||
230f7ede AG |
271 | #ifdef CONFIG_PPC_MPC512x |
272 | ||
273 | #define USBGENCTRL 0x200 /* NOTE: big endian */ | |
274 | #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */ | |
275 | #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/ | |
276 | #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */ | |
277 | #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */ | |
278 | #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */ | |
279 | #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */ | |
280 | ||
281 | #define ISIPHYCTRL 0x204 /* NOTE: big endian */ | |
282 | #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */ | |
283 | #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */ | |
284 | #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */ | |
285 | #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */ | |
286 | #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */ | |
287 | ||
288 | int fsl_usb2_mpc5121_init(struct platform_device *pdev) | |
289 | { | |
d4f09e28 | 290 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); |
230f7ede | 291 | struct clk *clk; |
7282bdb2 | 292 | int err; |
230f7ede | 293 | |
d77276c4 | 294 | clk = devm_clk_get(pdev->dev.parent, "ipg"); |
230f7ede AG |
295 | if (IS_ERR(clk)) { |
296 | dev_err(&pdev->dev, "failed to get clk\n"); | |
297 | return PTR_ERR(clk); | |
298 | } | |
7282bdb2 GS |
299 | err = clk_prepare_enable(clk); |
300 | if (err) { | |
301 | dev_err(&pdev->dev, "failed to enable clk\n"); | |
302 | return err; | |
303 | } | |
230f7ede AG |
304 | pdata->clk = clk; |
305 | ||
306 | if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { | |
307 | u32 reg = 0; | |
308 | ||
309 | if (pdata->invert_drvvbus) | |
310 | reg |= GC_PPP; | |
311 | ||
312 | if (pdata->invert_pwr_fault) | |
313 | reg |= GC_PFP; | |
314 | ||
315 | out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE); | |
316 | out_be32(pdata->regs + USBGENCTRL, reg); | |
317 | } | |
318 | return 0; | |
319 | } | |
320 | ||
321 | static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) | |
322 | { | |
d4f09e28 | 323 | struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); |
230f7ede AG |
324 | |
325 | pdata->regs = NULL; | |
326 | ||
7282bdb2 GS |
327 | if (pdata->clk) |
328 | clk_disable_unprepare(pdata->clk); | |
230f7ede AG |
329 | } |
330 | ||
cc604ddd | 331 | static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { |
230f7ede AG |
332 | .big_endian_desc = 1, |
333 | .big_endian_mmio = 1, | |
334 | .es = 1, | |
cc604ddd | 335 | .have_sysif_regs = 0, |
230f7ede AG |
336 | .le_setup_buf = 1, |
337 | .init = fsl_usb2_mpc5121_init, | |
338 | .exit = fsl_usb2_mpc5121_exit, | |
339 | }; | |
340 | #endif /* CONFIG_PPC_MPC512x */ | |
341 | ||
cc604ddd PT |
342 | static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = { |
343 | .have_sysif_regs = 1, | |
344 | }; | |
345 | ||
126512e3 | 346 | static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { |
cc604ddd PT |
347 | { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, }, |
348 | { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, }, | |
230f7ede AG |
349 | #ifdef CONFIG_PPC_MPC512x |
350 | { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, | |
351 | #endif | |
126512e3 AG |
352 | {}, |
353 | }; | |
8ddb9b88 | 354 | MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match); |
126512e3 AG |
355 | |
356 | static struct platform_driver fsl_usb2_mph_dr_driver = { | |
357 | .driver = { | |
358 | .name = "fsl-usb2-mph-dr", | |
126512e3 AG |
359 | .of_match_table = fsl_usb2_mph_dr_of_match, |
360 | }, | |
361 | .probe = fsl_usb2_mph_dr_of_probe, | |
7690417d | 362 | .remove = fsl_usb2_mph_dr_of_remove, |
126512e3 AG |
363 | }; |
364 | ||
cc27c96c | 365 | module_platform_driver(fsl_usb2_mph_dr_driver); |
126512e3 AG |
366 | |
367 | MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); | |
368 | MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); | |
369 | MODULE_LICENSE("GPL"); |