This source file includes following definitions.
- get_dr_mode_data
- determine_usb_phy
- fsl_usb2_device_register
- usb_get_ver_info
- fsl_usb2_mph_dr_of_probe
- __unregister_subdev
- fsl_usb2_mph_dr_of_remove
- fsl_usb2_mpc5121_init
- fsl_usb2_mpc5121_exit
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8 #include <linux/kernel.h>
9 #include <linux/platform_device.h>
10 #include <linux/fsl_devices.h>
11 #include <linux/err.h>
12 #include <linux/io.h>
13 #include <linux/of_platform.h>
14 #include <linux/clk.h>
15 #include <linux/module.h>
16 #include <linux/dma-mapping.h>
17
18 struct fsl_usb2_dev_data {
19 char *dr_mode;
20 char *drivers[3];
21 enum fsl_usb2_operating_modes op_mode;
22 };
23
24 static struct fsl_usb2_dev_data dr_mode_data[] = {
25 {
26 .dr_mode = "host",
27 .drivers = { "fsl-ehci", NULL, NULL, },
28 .op_mode = FSL_USB2_DR_HOST,
29 },
30 {
31 .dr_mode = "otg",
32 .drivers = { "fsl-usb2-otg", "fsl-ehci", "fsl-usb2-udc", },
33 .op_mode = FSL_USB2_DR_OTG,
34 },
35 {
36 .dr_mode = "peripheral",
37 .drivers = { "fsl-usb2-udc", NULL, NULL, },
38 .op_mode = FSL_USB2_DR_DEVICE,
39 },
40 };
41
42 static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
43 {
44 const unsigned char *prop;
45 int i;
46
47 prop = of_get_property(np, "dr_mode", NULL);
48 if (prop) {
49 for (i = 0; i < ARRAY_SIZE(dr_mode_data); i++) {
50 if (!strcmp(prop, dr_mode_data[i].dr_mode))
51 return &dr_mode_data[i];
52 }
53 }
54 pr_warn("%pOF: Invalid 'dr_mode' property, fallback to host mode\n",
55 np);
56 return &dr_mode_data[0];
57 }
58
59 static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
60 {
61 if (!phy_type)
62 return FSL_USB2_PHY_NONE;
63 if (!strcasecmp(phy_type, "ulpi"))
64 return FSL_USB2_PHY_ULPI;
65 if (!strcasecmp(phy_type, "utmi"))
66 return FSL_USB2_PHY_UTMI;
67 if (!strcasecmp(phy_type, "utmi_wide"))
68 return FSL_USB2_PHY_UTMI_WIDE;
69 if (!strcasecmp(phy_type, "utmi_dual"))
70 return FSL_USB2_PHY_UTMI_DUAL;
71 if (!strcasecmp(phy_type, "serial"))
72 return FSL_USB2_PHY_SERIAL;
73
74 return FSL_USB2_PHY_NONE;
75 }
76
77 static struct platform_device *fsl_usb2_device_register(
78 struct platform_device *ofdev,
79 struct fsl_usb2_platform_data *pdata,
80 const char *name, int id)
81 {
82 struct platform_device *pdev;
83 const struct resource *res = ofdev->resource;
84 unsigned int num = ofdev->num_resources;
85 int retval;
86
87 pdev = platform_device_alloc(name, id);
88 if (!pdev) {
89 retval = -ENOMEM;
90 goto error;
91 }
92
93 pdev->dev.parent = &ofdev->dev;
94
95 pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
96
97 if (!pdev->dev.dma_mask)
98 pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
99 else
100 dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
101
102 retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
103 if (retval)
104 goto error;
105
106 if (num) {
107 retval = platform_device_add_resources(pdev, res, num);
108 if (retval)
109 goto error;
110 }
111
112 retval = platform_device_add(pdev);
113 if (retval)
114 goto error;
115
116 return pdev;
117
118 error:
119 platform_device_put(pdev);
120 return ERR_PTR(retval);
121 }
122
123 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
124
125 static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
126 {
127 enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
128
129
130
131
132
133
134
135
136 if (of_device_is_compatible(np, "fsl-usb2-dr")) {
137 if (of_device_is_compatible(np, "fsl-usb2-dr-v1.6"))
138 ver = FSL_USB_VER_1_6;
139 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.2"))
140 ver = FSL_USB_VER_2_2;
141 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
142 ver = FSL_USB_VER_2_4;
143 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
144 ver = FSL_USB_VER_2_5;
145 else
146 ver = FSL_USB_VER_OLD;
147
148 if (ver > FSL_USB_VER_NONE)
149 return ver;
150 }
151
152 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
153 return FSL_USB_VER_OLD;
154
155 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
156 if (of_device_is_compatible(np, "fsl-usb2-mph-v1.6"))
157 ver = FSL_USB_VER_1_6;
158 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
159 ver = FSL_USB_VER_2_2;
160 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
161 ver = FSL_USB_VER_2_4;
162 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
163 ver = FSL_USB_VER_2_5;
164 else
165 ver = FSL_USB_VER_OLD;
166 }
167
168 return ver;
169 }
170
171 static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
172 {
173 struct device_node *np = ofdev->dev.of_node;
174 struct platform_device *usb_dev;
175 struct fsl_usb2_platform_data data, *pdata;
176 struct fsl_usb2_dev_data *dev_data;
177 const struct of_device_id *match;
178 const unsigned char *prop;
179 static unsigned int idx;
180 int i;
181
182 if (!of_device_is_available(np))
183 return -ENODEV;
184
185 match = of_match_device(fsl_usb2_mph_dr_of_match, &ofdev->dev);
186 if (!match)
187 return -ENODEV;
188
189 pdata = &data;
190 if (match->data)
191 memcpy(pdata, match->data, sizeof(data));
192 else
193 memset(pdata, 0, sizeof(data));
194
195 dev_data = get_dr_mode_data(np);
196
197 if (of_device_is_compatible(np, "fsl-usb2-mph")) {
198 if (of_get_property(np, "port0", NULL))
199 pdata->port_enables |= FSL_USB2_PORT0_ENABLED;
200
201 if (of_get_property(np, "port1", NULL))
202 pdata->port_enables |= FSL_USB2_PORT1_ENABLED;
203
204 pdata->operating_mode = FSL_USB2_MPH_HOST;
205 } else {
206 if (of_get_property(np, "fsl,invert-drvvbus", NULL))
207 pdata->invert_drvvbus = 1;
208
209 if (of_get_property(np, "fsl,invert-pwr-fault", NULL))
210 pdata->invert_pwr_fault = 1;
211
212
213 pdata->operating_mode = dev_data->op_mode;
214 }
215
216 prop = of_get_property(np, "phy_type", NULL);
217 pdata->phy_mode = determine_usb_phy(prop);
218 pdata->controller_ver = usb_get_ver_info(np);
219
220
221 pdata->has_fsl_erratum_a007792 =
222 of_property_read_bool(np, "fsl,usb-erratum-a007792");
223 pdata->has_fsl_erratum_a005275 =
224 of_property_read_bool(np, "fsl,usb-erratum-a005275");
225 pdata->has_fsl_erratum_a005697 =
226 of_property_read_bool(np, "fsl,usb_erratum-a005697");
227 pdata->has_fsl_erratum_a006918 =
228 of_property_read_bool(np, "fsl,usb_erratum-a006918");
229 pdata->has_fsl_erratum_14 =
230 of_property_read_bool(np, "fsl,usb_erratum-14");
231
232
233
234
235
236 pdata->check_phy_clk_valid =
237 of_property_read_bool(np, "phy-clk-valid");
238
239 if (pdata->have_sysif_regs) {
240 if (pdata->controller_ver == FSL_USB_VER_NONE) {
241 dev_warn(&ofdev->dev, "Could not get controller version\n");
242 return -ENODEV;
243 }
244 }
245
246 for (i = 0; i < ARRAY_SIZE(dev_data->drivers); i++) {
247 if (!dev_data->drivers[i])
248 continue;
249 usb_dev = fsl_usb2_device_register(ofdev, pdata,
250 dev_data->drivers[i], idx);
251 if (IS_ERR(usb_dev)) {
252 dev_err(&ofdev->dev, "Can't register usb device\n");
253 return PTR_ERR(usb_dev);
254 }
255 }
256 idx++;
257 return 0;
258 }
259
260 static int __unregister_subdev(struct device *dev, void *d)
261 {
262 platform_device_unregister(to_platform_device(dev));
263 return 0;
264 }
265
266 static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
267 {
268 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
269 return 0;
270 }
271
272 #ifdef CONFIG_PPC_MPC512x
273
274 #define USBGENCTRL 0x200
275 #define GC_WU_INT_CLR (1 << 5)
276 #define GC_ULPI_SEL (1 << 4)
277 #define GC_PPP (1 << 3)
278 #define GC_PFP (1 << 2)
279 #define GC_WU_ULPI_EN (1 << 1)
280 #define GC_WU_IE (1 << 1)
281
282 #define ISIPHYCTRL 0x204
283 #define PHYCTRL_PHYE (1 << 4)
284 #define PHYCTRL_BSENH (1 << 3)
285 #define PHYCTRL_BSEN (1 << 2)
286 #define PHYCTRL_LSFE (1 << 1)
287 #define PHYCTRL_PXE (1 << 0)
288
289 int fsl_usb2_mpc5121_init(struct platform_device *pdev)
290 {
291 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
292 struct clk *clk;
293 int err;
294
295 clk = devm_clk_get(pdev->dev.parent, "ipg");
296 if (IS_ERR(clk)) {
297 dev_err(&pdev->dev, "failed to get clk\n");
298 return PTR_ERR(clk);
299 }
300 err = clk_prepare_enable(clk);
301 if (err) {
302 dev_err(&pdev->dev, "failed to enable clk\n");
303 return err;
304 }
305 pdata->clk = clk;
306
307 if (pdata->phy_mode == FSL_USB2_PHY_UTMI_WIDE) {
308 u32 reg = 0;
309
310 if (pdata->invert_drvvbus)
311 reg |= GC_PPP;
312
313 if (pdata->invert_pwr_fault)
314 reg |= GC_PFP;
315
316 out_be32(pdata->regs + ISIPHYCTRL, PHYCTRL_PHYE | PHYCTRL_PXE);
317 out_be32(pdata->regs + USBGENCTRL, reg);
318 }
319 return 0;
320 }
321
322 static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
323 {
324 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
325
326 pdata->regs = NULL;
327
328 if (pdata->clk)
329 clk_disable_unprepare(pdata->clk);
330 }
331
332 static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
333 .big_endian_desc = 1,
334 .big_endian_mmio = 1,
335 .es = 1,
336 .have_sysif_regs = 0,
337 .le_setup_buf = 1,
338 .init = fsl_usb2_mpc5121_init,
339 .exit = fsl_usb2_mpc5121_exit,
340 };
341 #endif
342
343 static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
344 .have_sysif_regs = 1,
345 };
346
347 static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
348 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
349 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
350 #ifdef CONFIG_PPC_MPC512x
351 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
352 #endif
353 {},
354 };
355 MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match);
356
357 static struct platform_driver fsl_usb2_mph_dr_driver = {
358 .driver = {
359 .name = "fsl-usb2-mph-dr",
360 .of_match_table = fsl_usb2_mph_dr_of_match,
361 },
362 .probe = fsl_usb2_mph_dr_of_probe,
363 .remove = fsl_usb2_mph_dr_of_remove,
364 };
365
366 module_platform_driver(fsl_usb2_mph_dr_driver);
367
368 MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
369 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
370 MODULE_LICENSE("GPL");