1
2
3
4
5
6
7
8
9
10
11
12
13#include <linux/init.h>
14#include <linux/interrupt.h>
15#include <linux/fsl_devices.h>
16#include <linux/mdio-bitbang.h>
17#include <linux/of_mdio.h>
18#include <linux/slab.h>
19#include <linux/of_platform.h>
20
21#include <asm/io.h>
22#include <asm/cpm2.h>
23#include <asm/udbg.h>
24#include <asm/machdep.h>
25#include <asm/time.h>
26#include <asm/mpc8260.h>
27#include <asm/prom.h>
28
29#include <sysdev/fsl_soc.h>
30#include <sysdev/cpm2_pic.h>
31
32#include "pq2.h"
33
34static u8 __iomem *ep8248e_bcsr;
35static struct device_node *ep8248e_bcsr_node;
36
37#define BCSR7_SCC2_ENABLE 0x10
38
39#define BCSR8_PHY1_ENABLE 0x80
40#define BCSR8_PHY1_POWER 0x40
41#define BCSR8_PHY2_ENABLE 0x20
42#define BCSR8_PHY2_POWER 0x10
43#define BCSR8_MDIO_READ 0x04
44#define BCSR8_MDIO_CLOCK 0x02
45#define BCSR8_MDIO_DATA 0x01
46
47#define BCSR9_USB_ENABLE 0x80
48#define BCSR9_USB_POWER 0x40
49#define BCSR9_USB_HOST 0x20
50#define BCSR9_USB_FULL_SPEED_TARGET 0x10
51
52static void __init ep8248e_pic_init(void)
53{
54 struct device_node *np = of_find_compatible_node(NULL, NULL, "fsl,pq2-pic");
55 if (!np) {
56 printk(KERN_ERR "PIC init: can not find cpm-pic node\n");
57 return;
58 }
59
60 cpm2_pic_init(np);
61 of_node_put(np);
62}
63
64static void ep8248e_set_mdc(struct mdiobb_ctrl *ctrl, int level)
65{
66 if (level)
67 setbits8(&ep8248e_bcsr[8], BCSR8_MDIO_CLOCK);
68 else
69 clrbits8(&ep8248e_bcsr[8], BCSR8_MDIO_CLOCK);
70
71
72 in_8(&ep8248e_bcsr[8]);
73}
74
75static void ep8248e_set_mdio_dir(struct mdiobb_ctrl *ctrl, int output)
76{
77 if (output)
78 clrbits8(&ep8248e_bcsr[8], BCSR8_MDIO_READ);
79 else
80 setbits8(&ep8248e_bcsr[8], BCSR8_MDIO_READ);
81
82
83 in_8(&ep8248e_bcsr[8]);
84}
85
86static void ep8248e_set_mdio_data(struct mdiobb_ctrl *ctrl, int data)
87{
88 if (data)
89 setbits8(&ep8248e_bcsr[8], BCSR8_MDIO_DATA);
90 else
91 clrbits8(&ep8248e_bcsr[8], BCSR8_MDIO_DATA);
92
93
94 in_8(&ep8248e_bcsr[8]);
95}
96
97static int ep8248e_get_mdio_data(struct mdiobb_ctrl *ctrl)
98{
99 return in_8(&ep8248e_bcsr[8]) & BCSR8_MDIO_DATA;
100}
101
102static const struct mdiobb_ops ep8248e_mdio_ops = {
103 .set_mdc = ep8248e_set_mdc,
104 .set_mdio_dir = ep8248e_set_mdio_dir,
105 .set_mdio_data = ep8248e_set_mdio_data,
106 .get_mdio_data = ep8248e_get_mdio_data,
107 .owner = THIS_MODULE,
108};
109
110static struct mdiobb_ctrl ep8248e_mdio_ctrl = {
111 .ops = &ep8248e_mdio_ops,
112};
113
114static int ep8248e_mdio_probe(struct platform_device *ofdev)
115{
116 struct mii_bus *bus;
117 struct resource res;
118 struct device_node *node;
119 int ret;
120
121 node = of_get_parent(ofdev->dev.of_node);
122 of_node_put(node);
123 if (node != ep8248e_bcsr_node)
124 return -ENODEV;
125
126 ret = of_address_to_resource(ofdev->dev.of_node, 0, &res);
127 if (ret)
128 return ret;
129
130 bus = alloc_mdio_bitbang(&ep8248e_mdio_ctrl);
131 if (!bus)
132 return -ENOMEM;
133
134 bus->irq = kmalloc(sizeof(int) * PHY_MAX_ADDR, GFP_KERNEL);
135 if (bus->irq == NULL) {
136 ret = -ENOMEM;
137 goto err_free_bus;
138 }
139
140 bus->name = "ep8248e-mdio-bitbang";
141 bus->parent = &ofdev->dev;
142 snprintf(bus->id, MII_BUS_ID_SIZE, "%x", res.start);
143
144 ret = of_mdiobus_register(bus, ofdev->dev.of_node);
145 if (ret)
146 goto err_free_irq;
147
148 return 0;
149err_free_irq:
150 kfree(bus->irq);
151err_free_bus:
152 free_mdio_bitbang(bus);
153 return ret;
154}
155
156static int ep8248e_mdio_remove(struct platform_device *ofdev)
157{
158 BUG();
159 return 0;
160}
161
162static const struct of_device_id ep8248e_mdio_match[] = {
163 {
164 .compatible = "fsl,ep8248e-mdio-bitbang",
165 },
166 {},
167};
168
169static struct platform_driver ep8248e_mdio_driver = {
170 .driver = {
171 .name = "ep8248e-mdio-bitbang",
172 .of_match_table = ep8248e_mdio_match,
173 },
174 .probe = ep8248e_mdio_probe,
175 .remove = ep8248e_mdio_remove,
176};
177
178struct cpm_pin {
179 int port, pin, flags;
180};
181
182static __initdata struct cpm_pin ep8248e_pins[] = {
183
184 {2, 4, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
185 {2, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
186
187
188 {2, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
189 {2, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
190 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
191 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
192 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
193
194
195 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
196 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
197 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
198 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
199 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
200 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
201 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
202 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
203 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
204 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
205 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
206 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
207 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
208 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
209 {2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
210 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
211
212
213 {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
214 {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
215 {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
216 {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
217 {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
218 {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
219 {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
220 {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
221 {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
222 {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
223 {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
224 {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
225 {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
226 {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
227 {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
228 {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
229
230
231 {4, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
232 {4, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY},
233
234
235 {2, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
236 {2, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
237 {2, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
238 {2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
239 {3, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
240 {3, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
241 {3, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
242};
243
244static void __init init_ioports(void)
245{
246 int i;
247
248 for (i = 0; i < ARRAY_SIZE(ep8248e_pins); i++) {
249 const struct cpm_pin *pin = &ep8248e_pins[i];
250 cpm2_set_pin(pin->port, pin->pin, pin->flags);
251 }
252
253 cpm2_smc_clk_setup(CPM_CLK_SMC1, CPM_BRG7);
254 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
255 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
256 cpm2_clk_setup(CPM_CLK_SCC3, CPM_CLK8, CPM_CLK_TX);
257 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK11, CPM_CLK_RX);
258 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX);
259 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
260 cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
261}
262
263static void __init ep8248e_setup_arch(void)
264{
265 if (ppc_md.progress)
266 ppc_md.progress("ep8248e_setup_arch()", 0);
267
268 cpm2_reset();
269
270
271
272
273 clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP);
274
275 ep8248e_bcsr_node =
276 of_find_compatible_node(NULL, NULL, "fsl,ep8248e-bcsr");
277 if (!ep8248e_bcsr_node) {
278 printk(KERN_ERR "No bcsr in device tree\n");
279 return;
280 }
281
282 ep8248e_bcsr = of_iomap(ep8248e_bcsr_node, 0);
283 if (!ep8248e_bcsr) {
284 printk(KERN_ERR "Cannot map BCSR registers\n");
285 of_node_put(ep8248e_bcsr_node);
286 ep8248e_bcsr_node = NULL;
287 return;
288 }
289
290 setbits8(&ep8248e_bcsr[7], BCSR7_SCC2_ENABLE);
291 setbits8(&ep8248e_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
292 BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
293
294 init_ioports();
295
296 if (ppc_md.progress)
297 ppc_md.progress("ep8248e_setup_arch(), finish", 0);
298}
299
300static const struct of_device_id of_bus_ids[] __initconst = {
301 { .compatible = "simple-bus", },
302 { .compatible = "fsl,ep8248e-bcsr", },
303 {},
304};
305
306static int __init declare_of_platform_devices(void)
307{
308 of_platform_bus_probe(NULL, of_bus_ids, NULL);
309 platform_driver_register(&ep8248e_mdio_driver);
310
311 return 0;
312}
313machine_device_initcall(ep8248e, declare_of_platform_devices);
314
315
316
317
318static int __init ep8248e_probe(void)
319{
320 unsigned long root = of_get_flat_dt_root();
321 return of_flat_dt_is_compatible(root, "fsl,ep8248e");
322}
323
324define_machine(ep8248e)
325{
326 .name = "Embedded Planet EP8248E",
327 .probe = ep8248e_probe,
328 .setup_arch = ep8248e_setup_arch,
329 .init_IRQ = ep8248e_pic_init,
330 .get_irq = cpm2_get_irq,
331 .calibrate_decr = generic_calibrate_decr,
332 .restart = pq2_restart,
333 .progress = udbg_progress,
334};
335
