Commit | Line | Data |
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e96ffe2f TP |
1 | /* |
2 | * drivers/usb/host/ehci-orion.c | |
3 | * | |
4 | * Tzachi Perelstein <tzachi@marvell.com> | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | ||
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
13 | #include <linux/platform_device.h> | |
92aecfa9 | 14 | #include <linux/mbus.h> |
8c869eda | 15 | #include <linux/clk.h> |
c02cecb9 | 16 | #include <linux/platform_data/usb-ehci-orion.h> |
e96ffe2f TP |
17 | |
18 | #define rdl(off) __raw_readl(hcd->regs + (off)) | |
19 | #define wrl(off, val) __raw_writel((val), hcd->regs + (off)) | |
20 | ||
e96ffe2f TP |
21 | #define USB_CMD 0x140 |
22 | #define USB_MODE 0x1a8 | |
92aecfa9 LB |
23 | #define USB_CAUSE 0x310 |
24 | #define USB_MASK 0x314 | |
25 | #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4)) | |
26 | #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) | |
e96ffe2f TP |
27 | #define USB_IPG 0x360 |
28 | #define USB_PHY_PWR_CTRL 0x400 | |
29 | #define USB_PHY_TX_CTRL 0x420 | |
30 | #define USB_PHY_RX_CTRL 0x430 | |
31 | #define USB_PHY_IVREF_CTRL 0x440 | |
32 | #define USB_PHY_TST_GRP_CTRL 0x450 | |
33 | ||
34 | /* | |
35 | * Implement Orion USB controller specification guidelines | |
36 | */ | |
fb6f5529 | 37 | static void orion_usb_phy_v1_setup(struct usb_hcd *hcd) |
e96ffe2f | 38 | { |
fb6f5529 | 39 | /* The below GLs are according to the Orion Errata document */ |
e96ffe2f TP |
40 | /* |
41 | * Clear interrupt cause and mask | |
42 | */ | |
43 | wrl(USB_CAUSE, 0); | |
44 | wrl(USB_MASK, 0); | |
45 | ||
46 | /* | |
47 | * Reset controller | |
48 | */ | |
49 | wrl(USB_CMD, rdl(USB_CMD) | 0x2); | |
50 | while (rdl(USB_CMD) & 0x2); | |
51 | ||
52 | /* | |
53 | * GL# USB-10: Set IPG for non start of frame packets | |
54 | * Bits[14:8]=0xc | |
55 | */ | |
56 | wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00); | |
57 | ||
58 | /* | |
59 | * GL# USB-9: USB 2.0 Power Control | |
60 | * BG_VSEL[7:6]=0x1 | |
61 | */ | |
62 | wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40); | |
63 | ||
64 | /* | |
65 | * GL# USB-1: USB PHY Tx Control - force calibration to '8' | |
66 | * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8 | |
67 | */ | |
68 | wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040); | |
69 | ||
70 | /* | |
71 | * GL# USB-3 GL# USB-9: USB PHY Rx Control | |
72 | * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0, | |
73 | * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1 | |
74 | */ | |
75 | wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010); | |
76 | ||
77 | /* | |
78 | * GL# USB-3 GL# USB-9: USB PHY IVREF Control | |
79 | * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0 | |
80 | */ | |
81 | wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32); | |
82 | ||
83 | /* | |
84 | * GL# USB-3 GL# USB-9: USB PHY Test Group Control | |
85 | * REG_FIFO_SQ_RST[15]=0 | |
86 | */ | |
87 | wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000); | |
88 | ||
89 | /* | |
90 | * Stop and reset controller | |
91 | */ | |
92 | wrl(USB_CMD, rdl(USB_CMD) & ~0x1); | |
93 | wrl(USB_CMD, rdl(USB_CMD) | 0x2); | |
94 | while (rdl(USB_CMD) & 0x2); | |
95 | ||
96 | /* | |
97 | * GL# USB-5 Streaming disable REG_USB_MODE[4]=1 | |
98 | * TBD: This need to be done after each reset! | |
99 | * GL# USB-4 Setup USB Host mode | |
100 | */ | |
101 | wrl(USB_MODE, 0x13); | |
102 | } | |
103 | ||
104 | static int ehci_orion_setup(struct usb_hcd *hcd) | |
105 | { | |
106 | struct ehci_hcd *ehci = hcd_to_ehci(hcd); | |
107 | int retval; | |
108 | ||
72119743 | 109 | retval = ehci_setup(hcd); |
e96ffe2f TP |
110 | if (retval) |
111 | return retval; | |
112 | ||
e96ffe2f TP |
113 | ehci_port_power(ehci, 0); |
114 | ||
115 | return retval; | |
116 | } | |
117 | ||
118 | static const struct hc_driver ehci_orion_hc_driver = { | |
119 | .description = hcd_name, | |
120 | .product_desc = "Marvell Orion EHCI", | |
121 | .hcd_priv_size = sizeof(struct ehci_hcd), | |
122 | ||
123 | /* | |
124 | * generic hardware linkage | |
125 | */ | |
126 | .irq = ehci_irq, | |
127 | .flags = HCD_MEMORY | HCD_USB2, | |
128 | ||
129 | /* | |
130 | * basic lifecycle operations | |
131 | */ | |
132 | .reset = ehci_orion_setup, | |
133 | .start = ehci_run, | |
e96ffe2f TP |
134 | .stop = ehci_stop, |
135 | .shutdown = ehci_shutdown, | |
136 | ||
137 | /* | |
138 | * managing i/o requests and associated device resources | |
139 | */ | |
140 | .urb_enqueue = ehci_urb_enqueue, | |
141 | .urb_dequeue = ehci_urb_dequeue, | |
142 | .endpoint_disable = ehci_endpoint_disable, | |
b18ffd49 | 143 | .endpoint_reset = ehci_endpoint_reset, |
e96ffe2f TP |
144 | |
145 | /* | |
146 | * scheduling support | |
147 | */ | |
148 | .get_frame_number = ehci_get_frame, | |
149 | ||
150 | /* | |
151 | * root hub support | |
152 | */ | |
153 | .hub_status_data = ehci_hub_status_data, | |
154 | .hub_control = ehci_hub_control, | |
155 | .bus_suspend = ehci_bus_suspend, | |
156 | .bus_resume = ehci_bus_resume, | |
a8e51775 | 157 | .relinquish_port = ehci_relinquish_port, |
3a31155c | 158 | .port_handed_over = ehci_port_handed_over, |
914b7012 AS |
159 | |
160 | .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, | |
e96ffe2f TP |
161 | }; |
162 | ||
8855e49b | 163 | static void __devinit |
92aecfa9 | 164 | ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, |
63a9332b | 165 | const struct mbus_dram_target_info *dram) |
92aecfa9 LB |
166 | { |
167 | int i; | |
168 | ||
169 | for (i = 0; i < 4; i++) { | |
170 | wrl(USB_WINDOW_CTRL(i), 0); | |
171 | wrl(USB_WINDOW_BASE(i), 0); | |
172 | } | |
173 | ||
174 | for (i = 0; i < dram->num_cs; i++) { | |
63a9332b | 175 | const struct mbus_dram_window *cs = dram->cs + i; |
92aecfa9 LB |
176 | |
177 | wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) | | |
178 | (cs->mbus_attr << 8) | | |
179 | (dram->mbus_dram_target_id << 4) | 1); | |
180 | wrl(USB_WINDOW_BASE(i), cs->base); | |
181 | } | |
182 | } | |
183 | ||
dc2f2b75 | 184 | static int __devinit ehci_orion_drv_probe(struct platform_device *pdev) |
e96ffe2f | 185 | { |
92aecfa9 | 186 | struct orion_ehci_data *pd = pdev->dev.platform_data; |
63a9332b | 187 | const struct mbus_dram_target_info *dram; |
e96ffe2f TP |
188 | struct resource *res; |
189 | struct usb_hcd *hcd; | |
190 | struct ehci_hcd *ehci; | |
8c869eda | 191 | struct clk *clk; |
e96ffe2f TP |
192 | void __iomem *regs; |
193 | int irq, err; | |
194 | ||
195 | if (usb_disabled()) | |
196 | return -ENODEV; | |
197 | ||
198 | pr_debug("Initializing Orion-SoC USB Host Controller\n"); | |
199 | ||
200 | irq = platform_get_irq(pdev, 0); | |
201 | if (irq <= 0) { | |
202 | dev_err(&pdev->dev, | |
203 | "Found HC with no IRQ. Check %s setup!\n", | |
7071a3ce | 204 | dev_name(&pdev->dev)); |
e96ffe2f TP |
205 | err = -ENODEV; |
206 | goto err1; | |
207 | } | |
208 | ||
209 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
210 | if (!res) { | |
211 | dev_err(&pdev->dev, | |
212 | "Found HC with no register addr. Check %s setup!\n", | |
7071a3ce | 213 | dev_name(&pdev->dev)); |
e96ffe2f TP |
214 | err = -ENODEV; |
215 | goto err1; | |
216 | } | |
217 | ||
5672b7e6 | 218 | if (!request_mem_region(res->start, resource_size(res), |
e96ffe2f TP |
219 | ehci_orion_hc_driver.description)) { |
220 | dev_dbg(&pdev->dev, "controller already in use\n"); | |
221 | err = -EBUSY; | |
222 | goto err1; | |
223 | } | |
224 | ||
5672b7e6 | 225 | regs = ioremap(res->start, resource_size(res)); |
e96ffe2f TP |
226 | if (regs == NULL) { |
227 | dev_dbg(&pdev->dev, "error mapping memory\n"); | |
228 | err = -EFAULT; | |
229 | goto err2; | |
230 | } | |
231 | ||
8c869eda AL |
232 | /* Not all platforms can gate the clock, so it is not |
233 | an error if the clock does not exists. */ | |
234 | clk = clk_get(&pdev->dev, NULL); | |
235 | if (!IS_ERR(clk)) { | |
236 | clk_prepare_enable(clk); | |
237 | clk_put(clk); | |
238 | } | |
239 | ||
e96ffe2f | 240 | hcd = usb_create_hcd(&ehci_orion_hc_driver, |
7071a3ce | 241 | &pdev->dev, dev_name(&pdev->dev)); |
e96ffe2f TP |
242 | if (!hcd) { |
243 | err = -ENOMEM; | |
244 | goto err3; | |
245 | } | |
246 | ||
247 | hcd->rsrc_start = res->start; | |
5672b7e6 | 248 | hcd->rsrc_len = resource_size(res); |
e96ffe2f TP |
249 | hcd->regs = regs; |
250 | ||
251 | ehci = hcd_to_ehci(hcd); | |
252 | ehci->caps = hcd->regs + 0x100; | |
a8e51775 | 253 | hcd->has_tt = 1; |
e96ffe2f | 254 | |
92aecfa9 LB |
255 | /* |
256 | * (Re-)program MBUS remapping windows if we are asked to. | |
257 | */ | |
63a9332b AL |
258 | dram = mv_mbus_dram_info(); |
259 | if (dram) | |
260 | ehci_orion_conf_mbus_windows(hcd, dram); | |
92aecfa9 | 261 | |
e96ffe2f | 262 | /* |
fb6f5529 | 263 | * setup Orion USB controller. |
e96ffe2f | 264 | */ |
fb6f5529 RS |
265 | switch (pd->phy_version) { |
266 | case EHCI_PHY_NA: /* dont change USB phy settings */ | |
267 | break; | |
268 | case EHCI_PHY_ORION: | |
269 | orion_usb_phy_v1_setup(hcd); | |
270 | break; | |
271 | case EHCI_PHY_DD: | |
272 | case EHCI_PHY_KW: | |
273 | default: | |
274 | printk(KERN_WARNING "Orion ehci -USB phy version isn't supported.\n"); | |
275 | } | |
e96ffe2f | 276 | |
b5dd18d8 | 277 | err = usb_add_hcd(hcd, irq, IRQF_SHARED); |
e96ffe2f TP |
278 | if (err) |
279 | goto err4; | |
280 | ||
281 | return 0; | |
282 | ||
283 | err4: | |
284 | usb_put_hcd(hcd); | |
285 | err3: | |
baffab28 SB |
286 | if (!IS_ERR(clk)) { |
287 | clk_disable_unprepare(clk); | |
288 | clk_put(clk); | |
289 | } | |
e96ffe2f TP |
290 | iounmap(regs); |
291 | err2: | |
5672b7e6 | 292 | release_mem_region(res->start, resource_size(res)); |
e96ffe2f TP |
293 | err1: |
294 | dev_err(&pdev->dev, "init %s fail, %d\n", | |
7071a3ce | 295 | dev_name(&pdev->dev), err); |
e96ffe2f TP |
296 | |
297 | return err; | |
298 | } | |
299 | ||
300 | static int __exit ehci_orion_drv_remove(struct platform_device *pdev) | |
301 | { | |
302 | struct usb_hcd *hcd = platform_get_drvdata(pdev); | |
8c869eda | 303 | struct clk *clk; |
e96ffe2f TP |
304 | |
305 | usb_remove_hcd(hcd); | |
306 | iounmap(hcd->regs); | |
307 | release_mem_region(hcd->rsrc_start, hcd->rsrc_len); | |
308 | usb_put_hcd(hcd); | |
309 | ||
8c869eda AL |
310 | clk = clk_get(&pdev->dev, NULL); |
311 | if (!IS_ERR(clk)) { | |
312 | clk_disable_unprepare(clk); | |
313 | clk_put(clk); | |
314 | } | |
e96ffe2f TP |
315 | return 0; |
316 | } | |
317 | ||
318 | MODULE_ALIAS("platform:orion-ehci"); | |
319 | ||
320 | static struct platform_driver ehci_orion_driver = { | |
321 | .probe = ehci_orion_drv_probe, | |
322 | .remove = __exit_p(ehci_orion_drv_remove), | |
323 | .shutdown = usb_hcd_platform_shutdown, | |
324 | .driver.name = "orion-ehci", | |
325 | }; |