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