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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 | ||
27 | struct fsl_usb2_dev_data dr_mode_data[] __devinitdata = { | |
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 | ||
45 | struct fsl_usb2_dev_data * __devinit get_dr_mode_data(struct device_node *np) | |
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 | ||
62 | static enum fsl_usb2_phy_modes __devinit determine_usb_phy(const char *phy_type) | |
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; | |
72 | if (!strcasecmp(phy_type, "serial")) | |
73 | return FSL_USB2_PHY_SERIAL; | |
74 | ||
75 | return FSL_USB2_PHY_NONE; | |
76 | } | |
77 | ||
78 | struct platform_device * __devinit fsl_usb2_device_register( | |
79 | struct platform_device *ofdev, | |
80 | struct fsl_usb2_platform_data *pdata, | |
81 | const char *name, int id) | |
82 | { | |
83 | struct platform_device *pdev; | |
84 | const struct resource *res = ofdev->resource; | |
85 | unsigned int num = ofdev->num_resources; | |
86 | int retval; | |
87 | ||
88 | pdev = platform_device_alloc(name, id); | |
89 | if (!pdev) { | |
90 | retval = -ENOMEM; | |
91 | goto error; | |
92 | } | |
93 | ||
94 | pdev->dev.parent = &ofdev->dev; | |
95 | ||
96 | pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask; | |
126512e3 AG |
97 | *pdev->dev.dma_mask = *ofdev->dev.dma_mask; |
98 | ||
99 | retval = platform_device_add_data(pdev, pdata, sizeof(*pdata)); | |
100 | if (retval) | |
101 | goto error; | |
102 | ||
103 | if (num) { | |
104 | retval = platform_device_add_resources(pdev, res, num); | |
105 | if (retval) | |
106 | goto error; | |
107 | } | |
108 | ||
109 | retval = platform_device_add(pdev); | |
110 | if (retval) | |
111 | goto error; | |
112 | ||
113 | return pdev; | |
114 | ||
115 | error: | |
116 | platform_device_put(pdev); | |
117 | return ERR_PTR(retval); | |
118 | } | |
119 | ||
120 | static const struct of_device_id fsl_usb2_mph_dr_of_match[]; | |
121 | ||
58c559e6 RM |
122 | static int usb_get_ver_info(struct device_node *np) |
123 | { | |
124 | int ver = -1; | |
125 | ||
126 | /* | |
127 | * returns 1 for usb controller version 1.6 | |
128 | * returns 2 for usb controller version 2.2 | |
129 | * returns 0 otherwise | |
130 | */ | |
131 | if (of_device_is_compatible(np, "fsl-usb2-dr")) { | |
132 | if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6")) | |
133 | ver = FSL_USB_VER_1_6; | |
134 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2")) | |
135 | ver = FSL_USB_VER_2_2; | |
e98b6a4f RM |
136 | else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4")) |
137 | ver = FSL_USB_VER_2_4; | |
58c559e6 RM |
138 | else /* for previous controller versions */ |
139 | ver = FSL_USB_VER_OLD; | |
140 | ||
141 | if (ver > -1) | |
142 | return ver; | |
143 | } | |
144 | ||
145 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { | |
146 | if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6")) | |
147 | ver = FSL_USB_VER_1_6; | |
148 | else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2")) | |
149 | ver = FSL_USB_VER_2_2; | |
150 | else /* for previous controller versions */ | |
151 | ver = FSL_USB_VER_OLD; | |
152 | } | |
153 | ||
154 | return ver; | |
155 | } | |
156 | ||
126512e3 AG |
157 | static int __devinit fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev) |
158 | { | |
159 | struct device_node *np = ofdev->dev.of_node; | |
160 | struct platform_device *usb_dev; | |
161 | struct fsl_usb2_platform_data data, *pdata; | |
162 | struct fsl_usb2_dev_data *dev_data; | |
163 | const struct of_device_id *match; | |
164 | const unsigned char *prop; | |
165 | static unsigned int idx; | |
166 | int i; | |
167 | ||
168 | if (!of_device_is_available(np)) | |
169 | return -ENODEV; | |
170 | ||
171 | match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev); | |
172 | if (!match) | |
173 | return -ENODEV; | |
174 | ||
175 | pdata = &data; | |
176 | if (match->data) | |
177 | memcpy(pdata, match->data, sizeof(data)); | |
178 | else | |
179 | memset(pdata, 0, sizeof(data)); | |
180 | ||
181 | dev_data = get_dr_mode_data(np); | |
182 | ||
183 | if (of_device_is_compatible(np, "fsl-usb2-mph")) { | |
184 | if (of_get_property(np, "port0", NULL)) | |
185 | pdata->port_enables |= FSL_USB2_PORT0_ENABLED; | |
186 | ||
187 | if (of_get_property(np, "port1", NULL)) | |
188 | pdata->port_enables |= FSL_USB2_PORT1_ENABLED; | |
189 | ||
190 | pdata->operating_mode = FSL_USB2_MPH_HOST; | |
191 | } else { | |
230f7ede AG |
192 | if (of_get_property(np, "fsl,invert-drvvbus", NULL)) |
193 | pdata->invert_drvvbus = 1; | |
194 | ||
195 | if (of_get_property(np, "fsl,invert-pwr-fault", NULL)) | |
196 | pdata->invert_pwr_fault = 1; | |
197 | ||
126512e3 AG |
198 | /* setup mode selected in the device tree */ |
199 | pdata->operating_mode = dev_data->op_mode; | |
200 | } | |
201 | ||
202 | prop = of_get_property(np, "phy_type", NULL); | |
203 | pdata->phy_mode = determine_usb_phy(prop); | |
58c559e6 RM |
204 | pdata->controller_ver = usb_get_ver_info(np); |
205 | ||
206 | if (pdata->have_sysif_regs) { | |
207 | if (pdata->controller_ver < 0) { | |
208 | dev_warn(&ofdev->dev, "Could not get controller version\n"); | |
209 | return -ENODEV; | |
210 | } | |
211 | } | |
126512e3 AG |
212 | |
213 | for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) { | |
214 | if (!dev_data->drivers[i]) | |
215 | continue; | |
216 | usb_dev = fsl_usb2_device_register(ofdev, pdata, | |
217 | dev_data->drivers[i], idx); | |
218 | if (IS_ERR(usb_dev)) { | |
219 | dev_err(&ofdev->dev, "Can't register usb device\n"); | |
220 | return PTR_ERR(usb_dev); | |
221 | } | |
222 | } | |
223 | idx++; | |
224 | return 0; | |
225 | } | |
226 | ||
227 | static int __devexit __unregister_subdev(struct device *dev, void *d) | |
228 | { | |
229 | platform_device_unregister(to_platform_device(dev)); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static int __devexit fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev) | |
234 | { | |
235 | device_for_each_child(&ofdev->dev, NULL, __unregister_subdev); | |
236 | return 0; | |
237 | } | |
238 | ||
230f7ede AG |
239 | #ifdef CONFIG_PPC_MPC512x |
240 | ||
241 | #define USBGENCTRL 0x200 /* NOTE: big endian */ | |
242 | #define GC_WU_INT_CLR (1 << 5) /* Wakeup int clear */ | |
243 | #define GC_ULPI_SEL (1 << 4) /* ULPI i/f select (usb0 only)*/ | |
244 | #define GC_PPP (1 << 3) /* Inv. Port Power Polarity */ | |
245 | #define GC_PFP (1 << 2) /* Inv. Power Fault Polarity */ | |
246 | #define GC_WU_ULPI_EN (1 << 1) /* Wakeup on ULPI event */ | |
247 | #define GC_WU_IE (1 << 1) /* Wakeup interrupt enable */ | |
248 | ||
249 | #define ISIPHYCTRL 0x204 /* NOTE: big endian */ | |
250 | #define PHYCTRL_PHYE (1 << 4) /* On-chip UTMI PHY enable */ | |
251 | #define PHYCTRL_BSENH (1 << 3) /* Bit Stuff Enable High */ | |
252 | #define PHYCTRL_BSEN (1 << 2) /* Bit Stuff Enable */ | |
253 | #define PHYCTRL_LSFE (1 << 1) /* Line State Filter Enable */ | |
254 | #define PHYCTRL_PXE (1 << 0) /* PHY oscillator enable */ | |
255 | ||
256 | int fsl_usb2_mpc5121_init(struct platform_device *pdev) | |
257 | { | |
258 | struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; | |
259 | struct clk *clk; | |
260 | char clk_name[10]; | |
261 | int base, clk_num; | |
262 | ||
263 | base = pdev->resource->start & 0xf000; | |
264 | if (base == 0x3000) | |
265 | clk_num = 1; | |
266 | else if (base == 0x4000) | |
267 | clk_num = 2; | |
268 | else | |
269 | return -ENODEV; | |
270 | ||
271 | snprintf(clk_name, sizeof(clk_name), "usb%d_clk", clk_num); | |
272 | clk = clk_get(&pdev->dev, clk_name); | |
273 | if (IS_ERR(clk)) { | |
274 | dev_err(&pdev->dev, "failed to get clk\n"); | |
275 | return PTR_ERR(clk); | |
276 | } | |
277 | ||
278 | clk_enable(clk); | |
279 | pdata->clk = clk; | |
280 | ||
281 | if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) { | |
282 | u32 reg = 0; | |
283 | ||
284 | if (pdata->invert_drvvbus) | |
285 | reg |= GC_PPP; | |
286 | ||
287 | if (pdata->invert_pwr_fault) | |
288 | reg |= GC_PFP; | |
289 | ||
290 | out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE); | |
291 | out_be32(pdata->regs + USBGENCTRL, reg); | |
292 | } | |
293 | return 0; | |
294 | } | |
295 | ||
296 | static void fsl_usb2_mpc5121_exit(struct platform_device *pdev) | |
297 | { | |
298 | struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; | |
299 | ||
300 | pdata->regs = NULL; | |
301 | ||
302 | if (pdata->clk) { | |
303 | clk_disable(pdata->clk); | |
304 | clk_put(pdata->clk); | |
305 | } | |
306 | } | |
307 | ||
cc604ddd | 308 | static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = { |
230f7ede AG |
309 | .big_endian_desc = 1, |
310 | .big_endian_mmio = 1, | |
311 | .es = 1, | |
cc604ddd | 312 | .have_sysif_regs = 0, |
230f7ede AG |
313 | .le_setup_buf = 1, |
314 | .init = fsl_usb2_mpc5121_init, | |
315 | .exit = fsl_usb2_mpc5121_exit, | |
316 | }; | |
317 | #endif /* CONFIG_PPC_MPC512x */ | |
318 | ||
cc604ddd PT |
319 | static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = { |
320 | .have_sysif_regs = 1, | |
321 | }; | |
322 | ||
126512e3 | 323 | static const struct of_device_id fsl_usb2_mph_dr_of_match[] = { |
cc604ddd PT |
324 | { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, }, |
325 | { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, }, | |
230f7ede AG |
326 | #ifdef CONFIG_PPC_MPC512x |
327 | { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, }, | |
328 | #endif | |
126512e3 AG |
329 | {}, |
330 | }; | |
331 | ||
332 | static struct platform_driver fsl_usb2_mph_dr_driver = { | |
333 | .driver = { | |
334 | .name = "fsl-usb2-mph-dr", | |
335 | .owner = THIS_MODULE, | |
336 | .of_match_table = fsl_usb2_mph_dr_of_match, | |
337 | }, | |
338 | .probe = fsl_usb2_mph_dr_of_probe, | |
339 | .remove = __devexit_p(fsl_usb2_mph_dr_of_remove), | |
340 | }; | |
341 | ||
cc27c96c | 342 | module_platform_driver(fsl_usb2_mph_dr_driver); |
126512e3 AG |
343 | |
344 | MODULE_DESCRIPTION("FSL MPH DR OF devices driver"); | |
345 | MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); | |
346 | MODULE_LICENSE("GPL"); |