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21#include <linux/clk.h>
22#include <linux/platform_device.h>
23#include <linux/i2c.h>
24#include <linux/of.h>
25#include <linux/usb/isp1301.h>
26
27#include <mach/hardware.h>
28#include <asm/mach-types.h>
29#include <asm/io.h>
30
31#include <mach/platform.h>
32#include <mach/irqs.h>
33
34#define USB_CONFIG_BASE 0x31020000
35#define PWRMAN_BASE 0x40004000
36
37#define USB_CTRL IO_ADDRESS(PWRMAN_BASE + 0x64)
38
39
40#define USB_SLAVE_HCLK_EN (1 << 24)
41#define USB_DEV_NEED_CLK_EN (1 << 22)
42#define USB_HOST_NEED_CLK_EN (1 << 21)
43#define PAD_CONTROL_LAST_DRIVEN (1 << 19)
44
45#define USB_OTG_STAT_CONTROL IO_ADDRESS(USB_CONFIG_BASE + 0x110)
46
47
48#define TRANSPARENT_I2C_EN (1 << 7)
49#define HOST_EN (1 << 0)
50
51
52#ifndef start_int_set_falling_edge
53#define start_int_set_falling_edge(irq)
54#define start_int_set_rising_edge(irq)
55#define start_int_ack(irq)
56#define start_int_mask(irq)
57#define start_int_umask(irq)
58#endif
59
60static struct i2c_client *isp1301_i2c_client;
61
62extern int usb_disabled(void);
63
64static struct clk *usb_pll_clk;
65static struct clk *usb_dev_clk;
66static struct clk *usb_otg_clk;
67
68static void isp1301_configure_lpc32xx(void)
69{
70
71
72
73
74 i2c_smbus_write_byte_data(isp1301_i2c_client,
75 (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
76 MC1_UART_EN);
77 i2c_smbus_write_byte_data(isp1301_i2c_client,
78 (ISP1301_I2C_MODE_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
79 ~MC1_SPEED_REG);
80 i2c_smbus_write_byte_data(isp1301_i2c_client,
81 ISP1301_I2C_MODE_CONTROL_1, MC1_SPEED_REG);
82 i2c_smbus_write_byte_data(isp1301_i2c_client,
83 (ISP1301_I2C_MODE_CONTROL_2 | ISP1301_I2C_REG_CLEAR_ADDR),
84 ~0);
85 i2c_smbus_write_byte_data(isp1301_i2c_client,
86 ISP1301_I2C_MODE_CONTROL_2,
87 (MC2_BI_DI | MC2_PSW_EN | MC2_SPD_SUSP_CTRL));
88 i2c_smbus_write_byte_data(isp1301_i2c_client,
89 (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR), ~0);
90 i2c_smbus_write_byte_data(isp1301_i2c_client,
91 ISP1301_I2C_MODE_CONTROL_1, MC1_DAT_SE0);
92 i2c_smbus_write_byte_data(isp1301_i2c_client,
93 ISP1301_I2C_OTG_CONTROL_1,
94 (OTG1_DM_PULLDOWN | OTG1_DP_PULLDOWN));
95 i2c_smbus_write_byte_data(isp1301_i2c_client,
96 (ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR),
97 (OTG1_DM_PULLUP | OTG1_DP_PULLUP));
98 i2c_smbus_write_byte_data(isp1301_i2c_client,
99 ISP1301_I2C_INTERRUPT_LATCH | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
100 i2c_smbus_write_byte_data(isp1301_i2c_client,
101 ISP1301_I2C_INTERRUPT_FALLING | ISP1301_I2C_REG_CLEAR_ADDR,
102 ~0);
103 i2c_smbus_write_byte_data(isp1301_i2c_client,
104 ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
105
106
107 __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
108
109 printk(KERN_INFO "ISP1301 Vendor ID : 0x%04x\n",
110 i2c_smbus_read_word_data(isp1301_i2c_client, 0x00));
111 printk(KERN_INFO "ISP1301 Product ID : 0x%04x\n",
112 i2c_smbus_read_word_data(isp1301_i2c_client, 0x02));
113 printk(KERN_INFO "ISP1301 Version ID : 0x%04x\n",
114 i2c_smbus_read_word_data(isp1301_i2c_client, 0x14));
115}
116
117static void isp1301_configure(void)
118{
119 isp1301_configure_lpc32xx();
120}
121
122static inline void isp1301_vbus_on(void)
123{
124 i2c_smbus_write_byte_data(isp1301_i2c_client, ISP1301_I2C_OTG_CONTROL_1,
125 OTG1_VBUS_DRV);
126}
127
128static inline void isp1301_vbus_off(void)
129{
130 i2c_smbus_write_byte_data(isp1301_i2c_client,
131 ISP1301_I2C_OTG_CONTROL_1 | ISP1301_I2C_REG_CLEAR_ADDR,
132 OTG1_VBUS_DRV);
133}
134
135static void nxp_start_hc(void)
136{
137 unsigned long tmp = __raw_readl(USB_OTG_STAT_CONTROL) | HOST_EN;
138 __raw_writel(tmp, USB_OTG_STAT_CONTROL);
139 isp1301_vbus_on();
140}
141
142static void nxp_stop_hc(void)
143{
144 unsigned long tmp;
145 isp1301_vbus_off();
146 tmp = __raw_readl(USB_OTG_STAT_CONTROL) & ~HOST_EN;
147 __raw_writel(tmp, USB_OTG_STAT_CONTROL);
148}
149
150static int ohci_nxp_start(struct usb_hcd *hcd)
151{
152 struct ohci_hcd *ohci = hcd_to_ohci(hcd);
153 int ret;
154
155 if ((ret = ohci_init(ohci)) < 0)
156 return ret;
157
158 if ((ret = ohci_run(ohci)) < 0) {
159 dev_err(hcd->self.controller, "can't start\n");
160 ohci_stop(hcd);
161 return ret;
162 }
163 return 0;
164}
165
166static const struct hc_driver ohci_nxp_hc_driver = {
167 .description = hcd_name,
168 .product_desc = "nxp OHCI",
169
170
171
172
173 .irq = ohci_irq,
174 .flags = HCD_USB11 | HCD_MEMORY,
175
176 .hcd_priv_size = sizeof(struct ohci_hcd),
177
178
179
180 .start = ohci_nxp_start,
181 .stop = ohci_stop,
182 .shutdown = ohci_shutdown,
183
184
185
186
187 .urb_enqueue = ohci_urb_enqueue,
188 .urb_dequeue = ohci_urb_dequeue,
189 .endpoint_disable = ohci_endpoint_disable,
190
191
192
193
194 .get_frame_number = ohci_get_frame,
195
196
197
198
199 .hub_status_data = ohci_hub_status_data,
200 .hub_control = ohci_hub_control,
201#ifdef CONFIG_PM
202 .bus_suspend = ohci_bus_suspend,
203 .bus_resume = ohci_bus_resume,
204#endif
205 .start_port_reset = ohci_start_port_reset,
206};
207
208static int usb_hcd_nxp_probe(struct platform_device *pdev)
209{
210 struct usb_hcd *hcd = 0;
211 struct ohci_hcd *ohci;
212 const struct hc_driver *driver = &ohci_nxp_hc_driver;
213 struct resource *res;
214 int ret = 0, irq;
215 struct device_node *isp1301_node;
216
217 if (pdev->dev.of_node) {
218 isp1301_node = of_parse_phandle(pdev->dev.of_node,
219 "transceiver", 0);
220 } else {
221 isp1301_node = NULL;
222 }
223
224 isp1301_i2c_client = isp1301_get_client(isp1301_node);
225 if (!isp1301_i2c_client) {
226 return -EPROBE_DEFER;
227 }
228
229 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
230 pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
231
232 dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (nxp)\n", hcd_name);
233 if (usb_disabled()) {
234 dev_err(&pdev->dev, "USB is disabled\n");
235 ret = -ENODEV;
236 goto fail_disable;
237 }
238
239
240 __raw_writel(USB_SLAVE_HCLK_EN | PAD_CONTROL_LAST_DRIVEN, USB_CTRL);
241
242
243 usb_pll_clk = clk_get(&pdev->dev, "ck_pll5");
244 if (IS_ERR(usb_pll_clk)) {
245 dev_err(&pdev->dev, "failed to acquire USB PLL\n");
246 ret = PTR_ERR(usb_pll_clk);
247 goto fail_pll;
248 }
249
250 ret = clk_enable(usb_pll_clk);
251 if (ret < 0) {
252 dev_err(&pdev->dev, "failed to start USB PLL\n");
253 goto fail_pllen;
254 }
255
256 ret = clk_set_rate(usb_pll_clk, 48000);
257 if (ret < 0) {
258 dev_err(&pdev->dev, "failed to set USB clock rate\n");
259 goto fail_rate;
260 }
261
262
263 usb_dev_clk = clk_get(&pdev->dev, "ck_usbd");
264 if (IS_ERR(usb_dev_clk)) {
265 dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n");
266 ret = PTR_ERR(usb_dev_clk);
267 goto fail_dev;
268 }
269
270 ret = clk_enable(usb_dev_clk);
271 if (ret < 0) {
272 dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
273 goto fail_deven;
274 }
275
276
277 usb_otg_clk = clk_get(&pdev->dev, "ck_usb_otg");
278 if (IS_ERR(usb_otg_clk)) {
279 dev_err(&pdev->dev, "failed to acquire USB DEV Clock\n");
280 ret = PTR_ERR(usb_otg_clk);
281 goto fail_otg;
282 }
283
284 __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
285
286 ret = clk_enable(usb_otg_clk);
287 if (ret < 0) {
288 dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
289 goto fail_otgen;
290 }
291
292 isp1301_configure();
293
294 hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
295 if (!hcd) {
296 dev_err(&pdev->dev, "Failed to allocate HC buffer\n");
297 ret = -ENOMEM;
298 goto fail_hcd;
299 }
300
301 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
302 hcd->regs = devm_ioremap_resource(&pdev->dev, res);
303 if (IS_ERR(hcd->regs)) {
304 ret = PTR_ERR(hcd->regs);
305 goto fail_resource;
306 }
307 hcd->rsrc_start = res->start;
308 hcd->rsrc_len = resource_size(res);
309
310 irq = platform_get_irq(pdev, 0);
311 if (irq < 0) {
312 ret = -ENXIO;
313 goto fail_resource;
314 }
315
316 nxp_start_hc();
317 platform_set_drvdata(pdev, hcd);
318 ohci = hcd_to_ohci(hcd);
319 ohci_hcd_init(ohci);
320
321 dev_info(&pdev->dev, "at 0x%p, irq %d\n", hcd->regs, hcd->irq);
322 ret = usb_add_hcd(hcd, irq, 0);
323 if (ret == 0)
324 return ret;
325
326 nxp_stop_hc();
327fail_resource:
328 usb_put_hcd(hcd);
329fail_hcd:
330 clk_disable(usb_otg_clk);
331fail_otgen:
332 clk_put(usb_otg_clk);
333fail_otg:
334 clk_disable(usb_dev_clk);
335fail_deven:
336 clk_put(usb_dev_clk);
337fail_dev:
338fail_rate:
339 clk_disable(usb_pll_clk);
340fail_pllen:
341 clk_put(usb_pll_clk);
342fail_pll:
343fail_disable:
344 isp1301_i2c_client = NULL;
345 return ret;
346}
347
348static int usb_hcd_nxp_remove(struct platform_device *pdev)
349{
350 struct usb_hcd *hcd = platform_get_drvdata(pdev);
351
352 usb_remove_hcd(hcd);
353 nxp_stop_hc();
354 release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
355 usb_put_hcd(hcd);
356 clk_disable(usb_pll_clk);
357 clk_put(usb_pll_clk);
358 clk_disable(usb_dev_clk);
359 clk_put(usb_dev_clk);
360 i2c_unregister_device(isp1301_i2c_client);
361 isp1301_i2c_client = NULL;
362
363 platform_set_drvdata(pdev, NULL);
364
365 return 0;
366}
367
368
369MODULE_ALIAS("platform:usb-ohci");
370
371#ifdef CONFIG_OF
372static const struct of_device_id usb_hcd_nxp_match[] = {
373 { .compatible = "nxp,ohci-nxp" },
374 {},
375};
376MODULE_DEVICE_TABLE(of, usb_hcd_nxp_match);
377#endif
378
379static struct platform_driver usb_hcd_nxp_driver = {
380 .driver = {
381 .name = "usb-ohci",
382 .owner = THIS_MODULE,
383 .of_match_table = of_match_ptr(usb_hcd_nxp_match),
384 },
385 .probe = usb_hcd_nxp_probe,
386 .remove = usb_hcd_nxp_remove,
387};
388
389
