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Anatolij Gustschin126512e2010-09-28 20:55:20 +02001/*
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>
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +020018#include <linux/clk.h>
Paul Gortmaker6eb0de82011-07-03 16:09:31 -040019#include <linux/module.h>
Anatolij Gustschin126512e2010-09-28 20:55:20 +020020
21struct 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
Sachin Kamat660479a2013-09-16 16:33:52 +053027static struct fsl_usb2_dev_data dr_mode_data[] = {
Anatolij Gustschin126512e2010-09-28 20:55:20 +020028 {
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
Sachin Kamat660479a2013-09-16 16:33:52 +053045static struct fsl_usb2_dev_data *get_dr_mode_data(struct device_node *np)
Anatolij Gustschin126512e2010-09-28 20:55:20 +020046{
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
Bill Pemberton41ac7b32012-11-19 13:21:48 -050062static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
Anatolij Gustschin126512e2010-09-28 20:55:20 +020063{
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;
Nikhil Badola6009d952015-06-15 15:48:22 +053072 if (!strcasecmp(phy_type, "utmi_dual"))
73 return FSL_USB2_PHY_UTMI_DUAL;
Anatolij Gustschin126512e2010-09-28 20:55:20 +020074 if (!strcasecmp(phy_type, "serial"))
75 return FSL_USB2_PHY_SERIAL;
76
77 return FSL_USB2_PHY_NONE;
78}
79
Sachin Kamat660479a2013-09-16 16:33:52 +053080static struct platform_device *fsl_usb2_device_register(
Anatolij Gustschin126512e2010-09-28 20:55:20 +020081 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;
Anatolij Gustschin126512e2010-09-28 20:55:20 +020099 *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
117error:
118 platform_device_put(pdev);
119 return ERR_PTR(retval);
120}
121
122static const struct of_device_id fsl_usb2_mph_dr_of_match[];
123
Nikhil Badola38aa4202015-06-15 15:46:37 +0530124static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530125{
Nikhil Badola38aa4202015-06-15 15:46:37 +0530126 enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530127
128 /*
129 * returns 1 for usb controller version 1.6
130 * returns 2 for usb controller version 2.2
Nikhil Badolad7c444e2015-05-26 17:14:42 +0530131 * returns 3 for usb controller version 2.4
Nikhil Badola138c3f02015-05-26 17:15:29 +0530132 * returns 4 for usb controller version 2.5
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530133 * 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;
Ramneek Mehreshe98b6a42012-09-19 14:18:45 +0530140 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
141 ver = FSL_USB_VER_2_4;
Nikhil Badola138c3f02015-05-26 17:15:29 +0530142 else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
143 ver = FSL_USB_VER_2_5;
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530144 else /* for previous controller versions */
145 ver = FSL_USB_VER_OLD;
146
Nikhil Badola38aa4202015-06-15 15:46:37 +0530147 if (ver > FSL_USB_VER_NONE)
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530148 return ver;
149 }
150
Anatolij Gustschin7c1029b2012-12-04 14:23:21 +0100151 if (of_device_is_compatible(np, "fsl,mpc5121-usb2-dr"))
152 return FSL_USB_VER_OLD;
153
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530154 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;
Nikhil Badolad7c444e2015-05-26 17:14:42 +0530159 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
160 ver = FSL_USB_VER_2_4;
Nikhil Badola138c3f02015-05-26 17:15:29 +0530161 else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
162 ver = FSL_USB_VER_2_5;
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530163 else /* for previous controller versions */
164 ver = FSL_USB_VER_OLD;
165 }
166
167 return ver;
168}
169
Bill Pemberton41ac7b32012-11-19 13:21:48 -0500170static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200171{
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 {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200205 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
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200211 /* 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);
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530217 pdata->controller_ver = usb_get_ver_info(np);
218
Nikhil Badola523f1de2015-06-15 15:47:29 +0530219 /* 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;
Nikhil Badolaf8786a92015-08-06 14:51:27 +0530224 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;
Nikhil Badola523f1de2015-06-15 15:47:29 +0530228
Nikhil Badolaf4fdfaa2015-07-14 17:28:10 +0530229 /*
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
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530238 if (pdata->have_sysif_regs) {
Nikhil Badola38aa4202015-06-15 15:46:37 +0530239 if (pdata->controller_ver == FSL_USB_VER_NONE) {
Ramneek Mehresh58c559e2012-03-20 10:35:50 +0530240 dev_warn(&ofdev->dev, "Could not get controller version\n");
241 return -ENODEV;
242 }
243 }
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200244
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
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500259static int __unregister_subdev(struct device *dev, void *d)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200260{
261 platform_device_unregister(to_platform_device(dev));
262 return 0;
263}
264
Bill Pembertonfb4e98a2012-11-19 13:26:20 -0500265static int fsl_usb2_mph_dr_of_remove(struct platform_device *ofdev)
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200266{
267 device_for_each_child(&ofdev->dev, NULL, __unregister_subdev);
268 return 0;
269}
270
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200271#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
288int fsl_usb2_mpc5121_init(struct platform_device *pdev)
289{
Jingoo Hand4f09e22013-07-30 19:59:40 +0900290 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200291 struct clk *clk;
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200292 int err;
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200293
Gerhard Sittigd77276c2013-11-30 23:51:31 +0100294 clk = devm_clk_get(pdev->dev.parent, "ipg");
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200295 if (IS_ERR(clk)) {
296 dev_err(&pdev->dev, "failed to get clk\n");
297 return PTR_ERR(clk);
298 }
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200299 err = clk_prepare_enable(clk);
300 if (err) {
301 dev_err(&pdev->dev, "failed to enable clk\n");
302 return err;
303 }
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200304 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
321static void fsl_usb2_mpc5121_exit(struct platform_device *pdev)
322{
Jingoo Hand4f09e22013-07-30 19:59:40 +0900323 struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200324
325 pdata->regs = NULL;
326
Gerhard Sittig7282bdb2013-07-19 14:18:31 +0200327 if (pdata->clk)
328 clk_disable_unprepare(pdata->clk);
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200329}
330
Peter Tysercc604dd2011-01-10 17:34:14 -0600331static struct fsl_usb2_platform_data fsl_usb2_mpc5121_pd = {
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200332 .big_endian_desc = 1,
333 .big_endian_mmio = 1,
334 .es = 1,
Peter Tysercc604dd2011-01-10 17:34:14 -0600335 .have_sysif_regs = 0,
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200336 .le_setup_buf = 1,
337 .init = fsl_usb2_mpc5121_init,
338 .exit = fsl_usb2_mpc5121_exit,
339};
340#endif /* CONFIG_PPC_MPC512x */
341
Peter Tysercc604dd2011-01-10 17:34:14 -0600342static struct fsl_usb2_platform_data fsl_usb2_mpc8xxx_pd = {
343 .have_sysif_regs = 1,
344};
345
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200346static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
Peter Tysercc604dd2011-01-10 17:34:14 -0600347 { .compatible = "fsl-usb2-mph", .data = &fsl_usb2_mpc8xxx_pd, },
348 { .compatible = "fsl-usb2-dr", .data = &fsl_usb2_mpc8xxx_pd, },
Anatolij Gustschin230f7ed2010-09-28 20:55:21 +0200349#ifdef CONFIG_PPC_MPC512x
350 { .compatible = "fsl,mpc5121-usb2-dr", .data = &fsl_usb2_mpc5121_pd, },
351#endif
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200352 {},
353};
354
355static struct platform_driver fsl_usb2_mph_dr_driver = {
356 .driver = {
357 .name = "fsl-usb2-mph-dr",
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200358 .of_match_table = fsl_usb2_mph_dr_of_match,
359 },
360 .probe = fsl_usb2_mph_dr_of_probe,
Bill Pemberton76904172012-11-19 13:21:08 -0500361 .remove = fsl_usb2_mph_dr_of_remove,
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200362};
363
Axel Lincc27c962011-11-27 20:16:27 +0800364module_platform_driver(fsl_usb2_mph_dr_driver);
Anatolij Gustschin126512e2010-09-28 20:55:20 +0200365
366MODULE_DESCRIPTION("FSL MPH DR OF devices driver");
367MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>");
368MODULE_LICENSE("GPL");