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19#include <common.h>
20#include <asm/arch/cpu.h>
21#include <asm/arch/clock.h>
22#include <asm/arch/gpio.h>
23#include <asm/arch/usb_phy.h>
24#include <asm-generic/gpio.h>
25#include <dm/lists.h>
26#include <dm/root.h>
27#include <linux/usb/musb.h>
28#include "linux-compat.h"
29#include "musb_core.h"
30#include "musb_uboot.h"
31
32
33
34
35
36
37
38
39
40
41
42
43#define USBC_REG_o_ISCR 0x0400
44#define USBC_REG_o_PHYCTL 0x0404
45#define USBC_REG_o_PHYBIST 0x0408
46#define USBC_REG_o_PHYTUNE 0x040c
47
48#define USBC_REG_o_VEND0 0x0043
49
50
51#define USBC_BP_ISCR_VBUS_VALID_FROM_DATA 30
52#define USBC_BP_ISCR_VBUS_VALID_FROM_VBUS 29
53#define USBC_BP_ISCR_EXT_ID_STATUS 28
54#define USBC_BP_ISCR_EXT_DM_STATUS 27
55#define USBC_BP_ISCR_EXT_DP_STATUS 26
56#define USBC_BP_ISCR_MERGED_VBUS_STATUS 25
57#define USBC_BP_ISCR_MERGED_ID_STATUS 24
58
59#define USBC_BP_ISCR_ID_PULLUP_EN 17
60#define USBC_BP_ISCR_DPDM_PULLUP_EN 16
61#define USBC_BP_ISCR_FORCE_ID 14
62#define USBC_BP_ISCR_FORCE_VBUS_VALID 12
63#define USBC_BP_ISCR_VBUS_VALID_SRC 10
64
65#define USBC_BP_ISCR_HOSC_EN 7
66#define USBC_BP_ISCR_VBUS_CHANGE_DETECT 6
67#define USBC_BP_ISCR_ID_CHANGE_DETECT 5
68#define USBC_BP_ISCR_DPDM_CHANGE_DETECT 4
69#define USBC_BP_ISCR_IRQ_ENABLE 3
70#define USBC_BP_ISCR_VBUS_CHANGE_DETECT_EN 2
71#define USBC_BP_ISCR_ID_CHANGE_DETECT_EN 1
72#define USBC_BP_ISCR_DPDM_CHANGE_DETECT_EN 0
73
74
75
76
77
78static u32 USBC_WakeUp_ClearChangeDetect(u32 reg_val)
79{
80 u32 temp = reg_val;
81
82 temp &= ~(1 << USBC_BP_ISCR_VBUS_CHANGE_DETECT);
83 temp &= ~(1 << USBC_BP_ISCR_ID_CHANGE_DETECT);
84 temp &= ~(1 << USBC_BP_ISCR_DPDM_CHANGE_DETECT);
85
86 return temp;
87}
88
89static void USBC_EnableIdPullUp(__iomem void *base)
90{
91 u32 reg_val;
92
93 reg_val = musb_readl(base, USBC_REG_o_ISCR);
94 reg_val |= (1 << USBC_BP_ISCR_ID_PULLUP_EN);
95 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
96 musb_writel(base, USBC_REG_o_ISCR, reg_val);
97}
98
99static void USBC_EnableDpDmPullUp(__iomem void *base)
100{
101 u32 reg_val;
102
103 reg_val = musb_readl(base, USBC_REG_o_ISCR);
104 reg_val |= (1 << USBC_BP_ISCR_DPDM_PULLUP_EN);
105 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
106 musb_writel(base, USBC_REG_o_ISCR, reg_val);
107}
108
109static void USBC_ForceIdToLow(__iomem void *base)
110{
111 u32 reg_val;
112
113 reg_val = musb_readl(base, USBC_REG_o_ISCR);
114 reg_val &= ~(0x03 << USBC_BP_ISCR_FORCE_ID);
115 reg_val |= (0x02 << USBC_BP_ISCR_FORCE_ID);
116 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
117 musb_writel(base, USBC_REG_o_ISCR, reg_val);
118}
119
120static void USBC_ForceIdToHigh(__iomem void *base)
121{
122 u32 reg_val;
123
124 reg_val = musb_readl(base, USBC_REG_o_ISCR);
125 reg_val &= ~(0x03 << USBC_BP_ISCR_FORCE_ID);
126 reg_val |= (0x03 << USBC_BP_ISCR_FORCE_ID);
127 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
128 musb_writel(base, USBC_REG_o_ISCR, reg_val);
129}
130
131static void USBC_ForceVbusValidToLow(__iomem void *base)
132{
133 u32 reg_val;
134
135 reg_val = musb_readl(base, USBC_REG_o_ISCR);
136 reg_val &= ~(0x03 << USBC_BP_ISCR_FORCE_VBUS_VALID);
137 reg_val |= (0x02 << USBC_BP_ISCR_FORCE_VBUS_VALID);
138 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
139 musb_writel(base, USBC_REG_o_ISCR, reg_val);
140}
141
142static void USBC_ForceVbusValidToHigh(__iomem void *base)
143{
144 u32 reg_val;
145
146 reg_val = musb_readl(base, USBC_REG_o_ISCR);
147 reg_val &= ~(0x03 << USBC_BP_ISCR_FORCE_VBUS_VALID);
148 reg_val |= (0x03 << USBC_BP_ISCR_FORCE_VBUS_VALID);
149 reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
150 musb_writel(base, USBC_REG_o_ISCR, reg_val);
151}
152
153static void USBC_ConfigFIFO_Base(void)
154{
155 u32 reg_value;
156
157
158 reg_value = readl(SUNXI_SRAMC_BASE + 0x04);
159 reg_value &= ~(0x03 << 0);
160 reg_value |= (1 << 0);
161 writel(reg_value, SUNXI_SRAMC_BASE + 0x04);
162}
163
164
165
166
167
168static u8 last_int_usb;
169
170bool dfu_usb_get_reset(void)
171{
172 return !!(last_int_usb & MUSB_INTR_RESET);
173}
174
175
176
177
178
179static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci)
180{
181 struct musb *musb = __hci;
182 irqreturn_t retval = IRQ_NONE;
183
184
185 musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
186 last_int_usb = musb->int_usb;
187 if (musb->int_usb)
188 musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb);
189 musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
190 if (musb->int_tx)
191 musb_writew(musb->mregs, MUSB_INTRTX, musb->int_tx);
192 musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
193 if (musb->int_rx)
194 musb_writew(musb->mregs, MUSB_INTRRX, musb->int_rx);
195
196 if (musb->int_usb || musb->int_tx || musb->int_rx)
197 retval |= musb_interrupt(musb);
198
199 return retval;
200}
201
202
203static bool enabled = false;
204static struct musb *sunxi_musb;
205
206static int sunxi_musb_enable(struct musb *musb)
207{
208 pr_debug("%s():\n", __func__);
209
210 musb_ep_select(musb->mregs, 0);
211 musb_writeb(musb->mregs, MUSB_FADDR, 0);
212
213 if (enabled)
214 return 0;
215
216
217 musb_writeb(musb->mregs, USBC_REG_o_VEND0, 0);
218
219 if (is_host_enabled(musb)) {
220 int id = sunxi_usb_phy_id_detect(0);
221
222 if (id == 1 && sunxi_usb_phy_power_is_on(0))
223 sunxi_usb_phy_power_off(0);
224
225 if (!sunxi_usb_phy_power_is_on(0)) {
226 int vbus = sunxi_usb_phy_vbus_detect(0);
227 if (vbus == 1) {
228 printf("A charger is plugged into the OTG: ");
229 return -ENODEV;
230 }
231 }
232
233 if (id == 1) {
234 printf("No host cable detected: ");
235 return -ENODEV;
236 }
237
238 if (!sunxi_usb_phy_power_is_on(0))
239 sunxi_usb_phy_power_on(0);
240 }
241
242 USBC_ForceVbusValidToHigh(musb->mregs);
243
244 enabled = true;
245 return 0;
246}
247
248static void sunxi_musb_disable(struct musb *musb)
249{
250 pr_debug("%s():\n", __func__);
251
252 if (!enabled)
253 return;
254
255 USBC_ForceVbusValidToLow(musb->mregs);
256 mdelay(200);
257
258 enabled = false;
259}
260
261static int sunxi_musb_init(struct musb *musb)
262{
263 struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
264
265 pr_debug("%s():\n", __func__);
266
267 musb->isr = sunxi_musb_interrupt;
268
269 setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_USB0);
270#ifdef CONFIG_SUNXI_GEN_SUN6I
271 setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_GATE_OFFSET_USB0);
272#endif
273 sunxi_usb_phy_init(0);
274
275 USBC_ConfigFIFO_Base();
276 USBC_EnableDpDmPullUp(musb->mregs);
277 USBC_EnableIdPullUp(musb->mregs);
278
279 if (is_host_enabled(musb)) {
280
281 USBC_ForceIdToLow(musb->mregs);
282 } else {
283
284 USBC_ForceIdToHigh(musb->mregs);
285 }
286 USBC_ForceVbusValidToHigh(musb->mregs);
287
288 return 0;
289}
290
291static const struct musb_platform_ops sunxi_musb_ops = {
292 .init = sunxi_musb_init,
293 .enable = sunxi_musb_enable,
294 .disable = sunxi_musb_disable,
295};
296
297static struct musb_hdrc_config musb_config = {
298 .multipoint = 1,
299 .dyn_fifo = 1,
300 .num_eps = 6,
301 .ram_bits = 11,
302};
303
304static struct musb_hdrc_platform_data musb_plat = {
305#if defined(CONFIG_USB_MUSB_HOST)
306 .mode = MUSB_HOST,
307#else
308 .mode = MUSB_PERIPHERAL,
309#endif
310 .config = &musb_config,
311 .power = 250,
312 .platform_ops = &sunxi_musb_ops,
313};
314
315#ifdef CONFIG_USB_MUSB_HOST
316int musb_usb_probe(struct udevice *dev)
317{
318 struct musb_host_data *host = dev_get_priv(dev);
319 struct usb_bus_priv *priv = dev_get_uclass_priv(dev);
320 int ret;
321
322 priv->desc_before_addr = true;
323
324 if (!sunxi_musb) {
325 sunxi_musb = musb_init_controller(&musb_plat, NULL,
326 (void *)SUNXI_USB0_BASE);
327 }
328
329 host->host = sunxi_musb;
330 if (!host->host)
331 return -EIO;
332
333 ret = musb_lowlevel_init(host);
334 if (ret == 0)
335 printf("MUSB OTG\n");
336
337 return ret;
338}
339
340int musb_usb_remove(struct udevice *dev)
341{
342 struct musb_host_data *host = dev_get_priv(dev);
343
344 musb_stop(host->host);
345
346 return 0;
347}
348
349U_BOOT_DRIVER(usb_musb) = {
350 .name = "sunxi-musb",
351 .id = UCLASS_USB,
352 .probe = musb_usb_probe,
353 .remove = musb_usb_remove,
354 .ops = &musb_usb_ops,
355 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
356 .priv_auto_alloc_size = sizeof(struct musb_host_data),
357};
358#endif
359
360void sunxi_musb_board_init(void)
361{
362#ifdef CONFIG_USB_MUSB_HOST
363 struct udevice *dev;
364
365
366
367
368
369
370
371 device_bind_driver(dm_root(), "sunxi-musb", "sunxi-musb", &dev);
372#else
373 musb_register(&musb_plat, NULL, (void *)SUNXI_USB0_BASE);
374#endif
375}
376
