usb: common: rename phy-fsm-usb.c to usb-otg-fsm.c
[deliverable/linux.git] / drivers / usb / host / ehci-orion.c
CommitLineData
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>
77dae54a
AL
17#include <linux/of.h>
18#include <linux/of_device.h>
19#include <linux/of_irq.h>
a76dd463
MG
20#include <linux/usb.h>
21#include <linux/usb/hcd.h>
22#include <linux/io.h>
23#include <linux/dma-mapping.h>
24
25#include "ehci.h"
e96ffe2f
TP
26
27#define rdl(off) __raw_readl(hcd->regs + (off))
28#define wrl(off, val) __raw_writel((val), hcd->regs + (off))
29
e96ffe2f
TP
30#define USB_CMD 0x140
31#define USB_MODE 0x1a8
92aecfa9
LB
32#define USB_CAUSE 0x310
33#define USB_MASK 0x314
34#define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
35#define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
e96ffe2f
TP
36#define USB_IPG 0x360
37#define USB_PHY_PWR_CTRL 0x400
38#define USB_PHY_TX_CTRL 0x420
39#define USB_PHY_RX_CTRL 0x430
40#define USB_PHY_IVREF_CTRL 0x440
41#define USB_PHY_TST_GRP_CTRL 0x450
42
a76dd463
MG
43#define DRIVER_DESC "EHCI orion driver"
44
45static const char hcd_name[] = "ehci-orion";
46
47static struct hc_driver __read_mostly ehci_orion_hc_driver;
48
e96ffe2f
TP
49/*
50 * Implement Orion USB controller specification guidelines
51 */
fb6f5529 52static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
e96ffe2f 53{
fb6f5529 54 /* The below GLs are according to the Orion Errata document */
e96ffe2f
TP
55 /*
56 * Clear interrupt cause and mask
57 */
58 wrl(USB_CAUSE, 0);
59 wrl(USB_MASK, 0);
60
61 /*
62 * Reset controller
63 */
64 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
65 while (rdl(USB_CMD) & 0x2);
66
67 /*
68 * GL# USB-10: Set IPG for non start of frame packets
69 * Bits[14:8]=0xc
70 */
71 wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
72
73 /*
74 * GL# USB-9: USB 2.0 Power Control
75 * BG_VSEL[7:6]=0x1
76 */
77 wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
78
79 /*
80 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
81 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
82 */
83 wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
84
85 /*
86 * GL# USB-3 GL# USB-9: USB PHY Rx Control
87 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
88 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
89 */
90 wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
91
92 /*
93 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
94 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
95 */
96 wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
97
98 /*
99 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
100 * REG_FIFO_SQ_RST[15]=0
101 */
102 wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
103
104 /*
105 * Stop and reset controller
106 */
107 wrl(USB_CMD, rdl(USB_CMD) & ~0x1);
108 wrl(USB_CMD, rdl(USB_CMD) | 0x2);
109 while (rdl(USB_CMD) & 0x2);
110
111 /*
112 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
113 * TBD: This need to be done after each reset!
114 * GL# USB-4 Setup USB Host mode
115 */
116 wrl(USB_MODE, 0x13);
117}
118
41ac7b3a 119static void
92aecfa9 120ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
63a9332b 121 const struct mbus_dram_target_info *dram)
92aecfa9
LB
122{
123 int i;
124
125 for (i = 0; i < 4; i++) {
126 wrl(USB_WINDOW_CTRL(i), 0);
127 wrl(USB_WINDOW_BASE(i), 0);
128 }
129
130 for (i = 0; i < dram->num_cs; i++) {
63a9332b 131 const struct mbus_dram_window *cs = dram->cs + i;
92aecfa9
LB
132
133 wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
134 (cs->mbus_attr << 8) |
135 (dram->mbus_dram_target_id << 4) | 1);
136 wrl(USB_WINDOW_BASE(i), cs->base);
137 }
138}
139
41ac7b3a 140static int ehci_orion_drv_probe(struct platform_device *pdev)
e96ffe2f 141{
d4f09e28 142 struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
63a9332b 143 const struct mbus_dram_target_info *dram;
e96ffe2f
TP
144 struct resource *res;
145 struct usb_hcd *hcd;
146 struct ehci_hcd *ehci;
8c869eda 147 struct clk *clk;
e96ffe2f
TP
148 void __iomem *regs;
149 int irq, err;
77dae54a 150 enum orion_ehci_phy_ver phy_version;
e96ffe2f
TP
151
152 if (usb_disabled())
153 return -ENODEV;
154
155 pr_debug("Initializing Orion-SoC USB Host Controller\n");
156
77dae54a
AL
157 if (pdev->dev.of_node)
158 irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
159 else
160 irq = platform_get_irq(pdev, 0);
e96ffe2f
TP
161 if (irq <= 0) {
162 dev_err(&pdev->dev,
163 "Found HC with no IRQ. Check %s setup!\n",
7071a3ce 164 dev_name(&pdev->dev));
e96ffe2f
TP
165 err = -ENODEV;
166 goto err1;
167 }
168
169 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
170 if (!res) {
171 dev_err(&pdev->dev,
172 "Found HC with no register addr. Check %s setup!\n",
7071a3ce 173 dev_name(&pdev->dev));
e96ffe2f
TP
174 err = -ENODEV;
175 goto err1;
176 }
177
77dae54a
AL
178 /*
179 * Right now device-tree probed devices don't get dma_mask
180 * set. Since shared usb code relies on it, set it here for
181 * now. Once we have dma capability bindings this can go away.
182 */
e1fd7341 183 err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
22d9d8e8
RK
184 if (err)
185 goto err1;
77dae54a 186
806f6e6b
JH
187 regs = devm_ioremap_resource(&pdev->dev, res);
188 if (IS_ERR(regs)) {
189 err = PTR_ERR(regs);
e96ffe2f
TP
190 goto err1;
191 }
192
8c869eda
AL
193 /* Not all platforms can gate the clock, so it is not
194 an error if the clock does not exists. */
806f6e6b
JH
195 clk = devm_clk_get(&pdev->dev, NULL);
196 if (!IS_ERR(clk))
8c869eda 197 clk_prepare_enable(clk);
8c869eda 198
e96ffe2f 199 hcd = usb_create_hcd(&ehci_orion_hc_driver,
7071a3ce 200 &pdev->dev, dev_name(&pdev->dev));
e96ffe2f
TP
201 if (!hcd) {
202 err = -ENOMEM;
806f6e6b 203 goto err2;
e96ffe2f
TP
204 }
205
206 hcd->rsrc_start = res->start;
5672b7e6 207 hcd->rsrc_len = resource_size(res);
e96ffe2f
TP
208 hcd->regs = regs;
209
210 ehci = hcd_to_ehci(hcd);
211 ehci->caps = hcd->regs + 0x100;
a8e51775 212 hcd->has_tt = 1;
e96ffe2f 213
92aecfa9
LB
214 /*
215 * (Re-)program MBUS remapping windows if we are asked to.
216 */
63a9332b
AL
217 dram = mv_mbus_dram_info();
218 if (dram)
219 ehci_orion_conf_mbus_windows(hcd, dram);
92aecfa9 220
e96ffe2f 221 /*
fb6f5529 222 * setup Orion USB controller.
e96ffe2f 223 */
77dae54a
AL
224 if (pdev->dev.of_node)
225 phy_version = EHCI_PHY_NA;
226 else
227 phy_version = pd->phy_version;
228
229 switch (phy_version) {
fb6f5529
RS
230 case EHCI_PHY_NA: /* dont change USB phy settings */
231 break;
232 case EHCI_PHY_ORION:
233 orion_usb_phy_v1_setup(hcd);
234 break;
235 case EHCI_PHY_DD:
236 case EHCI_PHY_KW:
237 default:
fb53e946 238 dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
fb6f5529 239 }
e96ffe2f 240
b5dd18d8 241 err = usb_add_hcd(hcd, irq, IRQF_SHARED);
e96ffe2f 242 if (err)
806f6e6b 243 goto err3;
e96ffe2f 244
3c9740a1 245 device_wakeup_enable(hcd->self.controller);
e96ffe2f
TP
246 return 0;
247
e96ffe2f 248err3:
806f6e6b 249 usb_put_hcd(hcd);
e96ffe2f 250err2:
806f6e6b
JH
251 if (!IS_ERR(clk))
252 clk_disable_unprepare(clk);
e96ffe2f
TP
253err1:
254 dev_err(&pdev->dev, "init %s fail, %d\n",
7071a3ce 255 dev_name(&pdev->dev), err);
e96ffe2f
TP
256
257 return err;
258}
259
39d35681 260static int ehci_orion_drv_remove(struct platform_device *pdev)
e96ffe2f
TP
261{
262 struct usb_hcd *hcd = platform_get_drvdata(pdev);
8c869eda 263 struct clk *clk;
e96ffe2f
TP
264
265 usb_remove_hcd(hcd);
e96ffe2f
TP
266 usb_put_hcd(hcd);
267
806f6e6b
JH
268 clk = devm_clk_get(&pdev->dev, NULL);
269 if (!IS_ERR(clk))
8c869eda 270 clk_disable_unprepare(clk);
e96ffe2f
TP
271 return 0;
272}
273
59a609a9 274static const struct of_device_id ehci_orion_dt_ids[] = {
77dae54a
AL
275 { .compatible = "marvell,orion-ehci", },
276 {},
277};
278MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
279
e96ffe2f
TP
280static struct platform_driver ehci_orion_driver = {
281 .probe = ehci_orion_drv_probe,
39d35681 282 .remove = ehci_orion_drv_remove,
e96ffe2f 283 .shutdown = usb_hcd_platform_shutdown,
77dae54a
AL
284 .driver = {
285 .name = "orion-ehci",
286 .owner = THIS_MODULE,
a703d7e2 287 .of_match_table = ehci_orion_dt_ids,
77dae54a 288 },
e96ffe2f 289};
a76dd463
MG
290
291static int __init ehci_orion_init(void)
292{
293 if (usb_disabled())
294 return -ENODEV;
295
296 pr_info("%s: " DRIVER_DESC "\n", hcd_name);
297
298 ehci_init_driver(&ehci_orion_hc_driver, NULL);
299 return platform_driver_register(&ehci_orion_driver);
300}
301module_init(ehci_orion_init);
302
303static void __exit ehci_orion_cleanup(void)
304{
305 platform_driver_unregister(&ehci_orion_driver);
306}
307module_exit(ehci_orion_cleanup);
308
309MODULE_DESCRIPTION(DRIVER_DESC);
310MODULE_ALIAS("platform:orion-ehci");
311MODULE_AUTHOR("Tzachi Perelstein");
312MODULE_LICENSE("GPL v2");
This page took 0.642102 seconds and 5 git commands to generate.