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8#include <common.h>
9#include <command.h>
10#include <console.h>
11#include <dm.h>
12#include <log.h>
13#include <malloc.h>
14#include <linux/usb/otg.h>
15#include <dm/device-internal.h>
16#include <dm/lists.h>
17
18#include <asm/io.h>
19#include <asm/omap_musb.h>
20#include "musb_uboot.h"
21
22DECLARE_GLOBAL_DATA_PTR;
23
24#if CONFIG_IS_ENABLED(DM_USB)
25
26#define CM_PHY_PWRDN (1 << 0)
27#define CM_PHY_OTG_PWRDN (1 << 1)
28#define OTGVDET_EN (1 << 19)
29#define OTGSESSENDEN (1 << 20)
30
31#define AM335X_USB0_CTRL 0x0
32#define AM335X_USB1_CTRL 0x8
33
34static void ti_musb_set_phy_power(struct udevice *dev, u8 on)
35{
36 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
37
38 if (!platdata->ctrl_mod_base)
39 return;
40
41 if (on) {
42 clrsetbits_le32(platdata->ctrl_mod_base,
43 CM_PHY_PWRDN | CM_PHY_OTG_PWRDN,
44 OTGVDET_EN | OTGSESSENDEN);
45 } else {
46 clrsetbits_le32(platdata->ctrl_mod_base, 0,
47 CM_PHY_PWRDN | CM_PHY_OTG_PWRDN);
48 }
49}
50
51#if CONFIG_IS_ENABLED(OF_CONTROL)
52
53static int ti_musb_get_usb_index(int node)
54{
55 const void *fdt = gd->fdt_blob;
56 int i = 0;
57 char path[64];
58 const char *alias_path;
59 char alias[16];
60
61 fdt_get_path(fdt, node, path, sizeof(path));
62
63 do {
64 snprintf(alias, sizeof(alias), "usb%d", i);
65 alias_path = fdt_get_alias(fdt, alias);
66 if (alias_path == NULL) {
67 debug("USB index not found\n");
68 return -ENOENT;
69 }
70
71 if (!strcmp(path, alias_path))
72 return i;
73
74 i++;
75 } while (alias_path);
76
77 return -ENOENT;
78}
79
80static int ti_musb_ofdata_to_platdata(struct udevice *dev)
81{
82 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
83 const void *fdt = gd->fdt_blob;
84 int node = dev_of_offset(dev);
85 int phys;
86 int ctrl_mod;
87 int usb_index;
88 struct musb_hdrc_config *musb_config;
89
90 platdata->base = (void *)devfdt_get_addr_index(dev, 1);
91
92 phys = fdtdec_lookup_phandle(fdt, node, "phys");
93 ctrl_mod = fdtdec_lookup_phandle(fdt, phys, "ti,ctrl_mod");
94 platdata->ctrl_mod_base = (void *)fdtdec_get_addr(fdt, ctrl_mod, "reg");
95 usb_index = ti_musb_get_usb_index(node);
96 switch (usb_index) {
97 case 1:
98 platdata->ctrl_mod_base += AM335X_USB1_CTRL;
99 break;
100 case 0:
101 platdata->ctrl_mod_base += AM335X_USB0_CTRL;
102 break;
103 default:
104 break;
105 }
106
107 musb_config = malloc(sizeof(struct musb_hdrc_config));
108 memset(musb_config, 0, sizeof(struct musb_hdrc_config));
109
110 musb_config->multipoint = fdtdec_get_int(fdt, node,
111 "mentor,multipoint", -1);
112 if (musb_config->multipoint < 0) {
113 pr_err("MUSB multipoint DT entry missing\n");
114 return -ENOENT;
115 }
116
117 musb_config->dyn_fifo = 1;
118
119 musb_config->num_eps = fdtdec_get_int(fdt, node, "mentor,num-eps",
120 -1);
121 if (musb_config->num_eps < 0) {
122 pr_err("MUSB num-eps DT entry missing\n");
123 return -ENOENT;
124 }
125
126 musb_config->ram_bits = fdtdec_get_int(fdt, node, "mentor,ram-bits",
127 -1);
128 if (musb_config->ram_bits < 0) {
129 pr_err("MUSB ram-bits DT entry missing\n");
130 return -ENOENT;
131 }
132
133 platdata->plat.config = musb_config;
134
135 platdata->plat.power = fdtdec_get_int(fdt, node, "mentor,power", -1);
136 if (platdata->plat.power < 0) {
137 pr_err("MUSB mentor,power DT entry missing\n");
138 return -ENOENT;
139 }
140
141 platdata->plat.platform_ops = &musb_dsps_ops;
142
143 return 0;
144}
145#endif
146
147static int ti_musb_host_probe(struct udevice *dev)
148{
149 struct musb_host_data *host = dev_get_priv(dev);
150 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
151 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
152 int ret;
153
154 priv->desc_before_addr = true;
155
156 host->host = musb_init_controller(&platdata->plat,
157 NULL,
158 platdata->base);
159 if (!host->host)
160 return -EIO;
161
162 ti_musb_set_phy_power(dev, 1);
163 ret = musb_lowlevel_init(host);
164
165 return ret;
166}
167
168static int ti_musb_host_remove(struct udevice *dev)
169{
170 struct musb_host_data *host = dev_get_priv(dev);
171
172 musb_stop(host->host);
173 ti_musb_set_phy_power(dev, 0);
174
175 return 0;
176}
177
178#if CONFIG_IS_ENABLED(OF_CONTROL)
179static int ti_musb_host_ofdata_to_platdata(struct udevice *dev)
180{
181 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
182 const void *fdt = gd->fdt_blob;
183 int node = dev_of_offset(dev);
184 int ret;
185
186 ret = ti_musb_ofdata_to_platdata(dev);
187 if (ret) {
188 pr_err("platdata dt parse error\n");
189 return ret;
190 }
191
192 platdata->plat.mode = MUSB_HOST;
193
194 return 0;
195}
196#endif
197
198U_BOOT_DRIVER(ti_musb_host) = {
199 .name = "ti-musb-host",
200 .id = UCLASS_USB,
201#if CONFIG_IS_ENABLED(OF_CONTROL)
202 .ofdata_to_platdata = ti_musb_host_ofdata_to_platdata,
203#endif
204 .probe = ti_musb_host_probe,
205 .remove = ti_musb_host_remove,
206 .ops = &musb_usb_ops,
207 .platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
208 .priv_auto_alloc_size = sizeof(struct musb_host_data),
209};
210
211#if CONFIG_IS_ENABLED(DM_USB_GADGET)
212struct ti_musb_peripheral {
213 struct musb *periph;
214};
215
216#if CONFIG_IS_ENABLED(OF_CONTROL)
217static int ti_musb_peripheral_ofdata_to_platdata(struct udevice *dev)
218{
219 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
220 const void *fdt = gd->fdt_blob;
221 int node = dev_of_offset(dev);
222 int ret;
223
224 ret = ti_musb_ofdata_to_platdata(dev);
225 if (ret) {
226 pr_err("platdata dt parse error\n");
227 return ret;
228 }
229 platdata->plat.mode = MUSB_PERIPHERAL;
230
231 return 0;
232}
233#endif
234
235int dm_usb_gadget_handle_interrupts(struct udevice *dev)
236{
237 struct ti_musb_peripheral *priv = dev_get_priv(dev);
238
239 priv->periph->isr(0, priv->periph);
240
241 return 0;
242}
243
244static int ti_musb_peripheral_probe(struct udevice *dev)
245{
246 struct ti_musb_peripheral *priv = dev_get_priv(dev);
247 struct ti_musb_platdata *platdata = dev_get_platdata(dev);
248 int ret;
249
250 priv->periph = musb_init_controller(&platdata->plat,
251 NULL,
252 platdata->base);
253 if (!priv->periph)
254 return -EIO;
255
256 ti_musb_set_phy_power(dev, 1);
257 musb_gadget_setup(priv->periph);
258 return usb_add_gadget_udc((struct device *)dev, &priv->periph->g);
259}
260
261static int ti_musb_peripheral_remove(struct udevice *dev)
262{
263 struct ti_musb_peripheral *priv = dev_get_priv(dev);
264
265 usb_del_gadget_udc(&priv->periph->g);
266 ti_musb_set_phy_power(dev, 0);
267
268 return 0;
269}
270
271U_BOOT_DRIVER(ti_musb_peripheral) = {
272 .name = "ti-musb-peripheral",
273 .id = UCLASS_USB_GADGET_GENERIC,
274#if CONFIG_IS_ENABLED(OF_CONTROL)
275 .ofdata_to_platdata = ti_musb_peripheral_ofdata_to_platdata,
276#endif
277 .probe = ti_musb_peripheral_probe,
278 .remove = ti_musb_peripheral_remove,
279 .ops = &musb_usb_ops,
280 .platdata_auto_alloc_size = sizeof(struct ti_musb_platdata),
281 .priv_auto_alloc_size = sizeof(struct ti_musb_peripheral),
282 .flags = DM_FLAG_PRE_RELOC,
283};
284#endif
285
286#if CONFIG_IS_ENABLED(OF_CONTROL)
287static int ti_musb_wrapper_bind(struct udevice *parent)
288{
289 ofnode node;
290 int ret;
291
292 ofnode_for_each_subnode(node, parent->node) {
293 struct udevice *dev;
294 const char *name = ofnode_get_name(node);
295 enum usb_dr_mode dr_mode;
296 struct driver *drv;
297
298 if (strncmp(name, "usb@", 4))
299 continue;
300
301 dr_mode = usb_get_dr_mode(node);
302 switch (dr_mode) {
303 case USB_DR_MODE_PERIPHERAL:
304
305 ret = device_bind_driver_to_node(parent,
306 "ti-musb-peripheral",
307 name,
308 node,
309 &dev);
310 if (ret)
311 pr_err("musb - not able to bind usb peripheral node\n");
312 break;
313 case USB_DR_MODE_HOST:
314
315 ret = device_bind_driver_to_node(parent,
316 "ti-musb-host",
317 name,
318 node,
319 &dev);
320 if (ret)
321 pr_err("musb - not able to bind usb host node\n");
322 break;
323 default:
324 break;
325 };
326 }
327 return 0;
328}
329
330static const struct udevice_id ti_musb_ids[] = {
331 { .compatible = "ti,am33xx-usb" },
332 { }
333};
334
335U_BOOT_DRIVER(ti_musb_wrapper) = {
336 .name = "ti-musb-wrapper",
337 .id = UCLASS_MISC,
338 .of_match = ti_musb_ids,
339 .bind = ti_musb_wrapper_bind,
340};
341#endif
342
343#endif
344
