1
2#include <linux/firmware.h>
3#include <drm/drmP.h>
4#include "ast_drv.h"
5MODULE_FIRMWARE("ast_dp501_fw.bin");
6
7int ast_load_dp501_microcode(struct drm_device *dev)
8{
9	struct ast_private *ast = dev->dev_private;
10	static char *fw_name = "ast_dp501_fw.bin";
11	int err;
12	err = request_firmware(&ast->dp501_fw, fw_name, dev->dev);
13	if (err)
14		return err;
15
16	return 0;
17}
18
19static void send_ack(struct ast_private *ast)
20{
21	u8 sendack;
22	sendack = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, 0xff);
23	sendack |= 0x80;
24	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, 0x00, sendack);
25}
26
27static void send_nack(struct ast_private *ast)
28{
29	u8 sendack;
30	sendack = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, 0xff);
31	sendack &= ~0x80;
32	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, 0x00, sendack);
33}
34
35static bool wait_ack(struct ast_private *ast)
36{
37	u8 waitack;
38	u32 retry = 0;
39	do {
40		waitack = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd2, 0xff);
41		waitack &= 0x80;
42		udelay(100);
43	} while ((!waitack) && (retry++ < 1000));
44
45	if (retry < 1000)
46		return true;
47	else
48		return false;
49}
50
51static bool wait_nack(struct ast_private *ast)
52{
53	u8 waitack;
54	u32 retry = 0;
55	do {
56		waitack = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd2, 0xff);
57		waitack &= 0x80;
58		udelay(100);
59	} while ((waitack) && (retry++ < 1000));
60
61	if (retry < 1000)
62		return true;
63	else
64		return false;
65}
66
67static void set_cmd_trigger(struct ast_private *ast)
68{
69	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, ~0x40, 0x40);
70}
71
72static void clear_cmd_trigger(struct ast_private *ast)
73{
74	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9b, ~0x40, 0x00);
75}
76
77#if 0
78static bool wait_fw_ready(struct ast_private *ast)
79{
80	u8 waitready;
81	u32 retry = 0;
82	do {
83		waitready = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd2, 0xff);
84		waitready &= 0x40;
85		udelay(100);
86	} while ((!waitready) && (retry++ < 1000));
87
88	if (retry < 1000)
89		return true;
90	else
91		return false;
92}
93#endif
94
95static bool ast_write_cmd(struct drm_device *dev, u8 data)
96{
97	struct ast_private *ast = dev->dev_private;
98	int retry = 0;
99	if (wait_nack(ast)) {
100		send_nack(ast);
101		ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9a, 0x00, data);
102		send_ack(ast);
103		set_cmd_trigger(ast);
104		do {
105			if (wait_ack(ast)) {
106				clear_cmd_trigger(ast);
107				send_nack(ast);
108				return true;
109			}
110		} while (retry++ < 100);
111	}
112	clear_cmd_trigger(ast);
113	send_nack(ast);
114	return false;
115}
116
117static bool ast_write_data(struct drm_device *dev, u8 data)
118{
119	struct ast_private *ast = dev->dev_private;
120
121	if (wait_nack(ast)) {
122		send_nack(ast);
123		ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9a, 0x00, data);
124		send_ack(ast);
125		if (wait_ack(ast)) {
126			send_nack(ast);
127			return true;
128		}
129	}
130	send_nack(ast);
131	return false;
132}
133
134#if 0
135static bool ast_read_data(struct drm_device *dev, u8 *data)
136{
137	struct ast_private *ast = dev->dev_private;
138	u8 tmp;
139
140	*data = 0;
141
142	if (wait_ack(ast) == false)
143		return false;
144	tmp = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd3, 0xff);
145	*data = tmp;
146	if (wait_nack(ast) == false) {
147		send_nack(ast);
148		return false;
149	}
150	send_nack(ast);
151	return true;
152}
153
154static void clear_cmd(struct ast_private *ast)
155{
156	send_nack(ast);
157	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x9a, 0x00, 0x00);
158}
159#endif
160
161void ast_set_dp501_video_output(struct drm_device *dev, u8 mode)
162{
163	ast_write_cmd(dev, 0x40);
164	ast_write_data(dev, mode);
165
166	msleep(10);
167}
168
169static u32 get_fw_base(struct ast_private *ast)
170{
171	return ast_mindwm(ast, 0x1e6e2104) & 0x7fffffff;
172}
173
174bool ast_backup_fw(struct drm_device *dev, u8 *addr, u32 size)
175{
176	struct ast_private *ast = dev->dev_private;
177	u32 i, data;
178	u32 boot_address;
179
180	data = ast_mindwm(ast, 0x1e6e2100) & 0x01;
181	if (data) {
182		boot_address = get_fw_base(ast);
183		for (i = 0; i < size; i += 4)
184			*(u32 *)(addr + i) = ast_mindwm(ast, boot_address + i);
185		return true;
186	}
187	return false;
188}
189
190bool ast_launch_m68k(struct drm_device *dev)
191{
192	struct ast_private *ast = dev->dev_private;
193	u32 i, data, len = 0;
194	u32 boot_address;
195	u8 *fw_addr = NULL;
196	u8 jreg;
197
198	data = ast_mindwm(ast, 0x1e6e2100) & 0x01;
199	if (!data) {
200
201		if (ast->dp501_fw_addr) {
202			fw_addr = ast->dp501_fw_addr;
203			len = 32*1024;
204		} else if (ast->dp501_fw) {
205			fw_addr = (u8 *)ast->dp501_fw->data;
206			len = ast->dp501_fw->size;
207		}
208		/* Get BootAddress */
209		ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8);
210		data = ast_mindwm(ast, 0x1e6e0004);
211		switch (data & 0x03) {
212		case 0:
213			boot_address = 0x44000000;
214			break;
215		default:
216		case 1:
217			boot_address = 0x48000000;
218			break;
219		case 2:
220			boot_address = 0x50000000;
221			break;
222		case 3:
223			boot_address = 0x60000000;
224			break;
225		}
226		boot_address -= 0x200000; /* -2MB */
227
228		/* copy image to buffer */
229		for (i = 0; i < len; i += 4) {
230			data = *(u32 *)(fw_addr + i);
231			ast_moutdwm(ast, boot_address + i, data);
232		}
233
234		/* Init SCU */
235		ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8);
236
237		/* Launch FW */
238		ast_moutdwm(ast, 0x1e6e2104, 0x80000000 + boot_address);
239		ast_moutdwm(ast, 0x1e6e2100, 1);
240
241		/* Update Scratch */
242		data = ast_mindwm(ast, 0x1e6e2040) & 0xfffff1ff;		/* D[11:9] = 100b: UEFI handling */
243		data |= 0x800;
244		ast_moutdwm(ast, 0x1e6e2040, data);
245
246		jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x99, 0xfc); /* D[1:0]: Reserved Video Buffer */
247		jreg |= 0x02;
248		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x99, jreg);
249	}
250	return true;
251}
252
253u8 ast_get_dp501_max_clk(struct drm_device *dev)
254{
255	struct ast_private *ast = dev->dev_private;
256	u32 boot_address, offset, data;
257	u8 linkcap[4], linkrate, linklanes, maxclk = 0xff;
258
259	boot_address = get_fw_base(ast);
260
261	/* validate FW version */
262	offset = 0xf000;
263	data = ast_mindwm(ast, boot_address + offset);
264	if ((data & 0xf0) != 0x10) /* version: 1x */
265		return maxclk;
266
267	/* Read Link Capability */
268	offset  = 0xf014;
269	*(u32 *)linkcap = ast_mindwm(ast, boot_address + offset);
270	if (linkcap[2] == 0) {
271		linkrate = linkcap[0];
272		linklanes = linkcap[1];
273		data = (linkrate == 0x0a) ? (90 * linklanes) : (54 * linklanes);
274		if (data > 0xff)
275			data = 0xff;
276		maxclk = (u8)data;
277	}
278	return maxclk;
279}
280
281bool ast_dp501_read_edid(struct drm_device *dev, u8 *ediddata)
282{
283	struct ast_private *ast = dev->dev_private;
284	u32 i, boot_address, offset, data;
285
286	boot_address = get_fw_base(ast);
287
288	/* validate FW version */
289	offset = 0xf000;
290	data = ast_mindwm(ast, boot_address + offset);
291	if ((data & 0xf0) != 0x10)
292		return false;
293
294	/* validate PnP Monitor */
295	offset = 0xf010;
296	data = ast_mindwm(ast, boot_address + offset);
297	if (!(data & 0x01))
298		return false;
299
300	/* Read EDID */
301	offset = 0xf020;
302	for (i = 0; i < 128; i += 4) {
303		data = ast_mindwm(ast, boot_address + offset + i);
304		*(u32 *)(ediddata + i) = data;
305	}
306
307	return true;
308}
309
310static bool ast_init_dvo(struct drm_device *dev)
311{
312	struct ast_private *ast = dev->dev_private;
313	u8 jreg;
314	u32 data;
315	ast_write32(ast, 0xf004, 0x1e6e0000);
316	ast_write32(ast, 0xf000, 0x1);
317	ast_write32(ast, 0x12000, 0x1688a8a8);
318
319	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
320	if (!(jreg & 0x80)) {
321		/* Init SCU DVO Settings */
322		data = ast_read32(ast, 0x12008);
323		/* delay phase */
324		data &= 0xfffff8ff;
325		data |= 0x00000500;
326		ast_write32(ast, 0x12008, data);
327
328		if (ast->chip == AST2300) {
329			data = ast_read32(ast, 0x12084);
330			/* multi-pins for DVO single-edge */
331			data |= 0xfffe0000;
332			ast_write32(ast, 0x12084, data);
333
334			data = ast_read32(ast, 0x12088);
335			/* multi-pins for DVO single-edge */
336			data |= 0x000fffff;
337			ast_write32(ast, 0x12088, data);
338
339			data = ast_read32(ast, 0x12090);
340			/* multi-pins for DVO single-edge */
341			data &= 0xffffffcf;
342			data |= 0x00000020;
343			ast_write32(ast, 0x12090, data);
344		} else { /* AST2400 */
345			data = ast_read32(ast, 0x12088);
346			/* multi-pins for DVO single-edge */
347			data |= 0x30000000;
348			ast_write32(ast, 0x12088, data);
349
350			data = ast_read32(ast, 0x1208c);
351			/* multi-pins for DVO single-edge */
352			data |= 0x000000cf;
353			ast_write32(ast, 0x1208c, data);
354
355			data = ast_read32(ast, 0x120a4);
356			/* multi-pins for DVO single-edge */
357			data |= 0xffff0000;
358			ast_write32(ast, 0x120a4, data);
359
360			data = ast_read32(ast, 0x120a8);
361			/* multi-pins for DVO single-edge */
362			data |= 0x0000000f;
363			ast_write32(ast, 0x120a8, data);
364
365			data = ast_read32(ast, 0x12094);
366			/* multi-pins for DVO single-edge */
367			data |= 0x00000002;
368			ast_write32(ast, 0x12094, data);
369		}
370	}
371
372	/* Force to DVO */
373	data = ast_read32(ast, 0x1202c);
374	data &= 0xfffbffff;
375	ast_write32(ast, 0x1202c, data);
376
377	/* Init VGA DVO Settings */
378	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xcf, 0x80);
379	return true;
380}
381
382
383static void ast_init_analog(struct drm_device *dev)
384{
385	struct ast_private *ast = dev->dev_private;
386	u32 data;
387
388	/*
389	 * Set DAC source to VGA mode in SCU2C via the P2A
390	 * bridge. First configure the P2U to target the SCU
391	 * in case it isn't at this stage.
392	 */
393	ast_write32(ast, 0xf004, 0x1e6e0000);
394	ast_write32(ast, 0xf000, 0x1);
395
396	/* Then unlock the SCU with the magic password */
397	ast_write32(ast, 0x12000, 0x1688a8a8);
398	ast_write32(ast, 0x12000, 0x1688a8a8);
399	ast_write32(ast, 0x12000, 0x1688a8a8);
400
401	/* Finally, clear bits [17:16] of SCU2c */
402	data = ast_read32(ast, 0x1202c);
403	data &= 0xfffcffff;
404	ast_write32(ast, 0, data);
405
406	/* Disable DVO */
407	ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xcf, 0x00);
408}
409
410void ast_init_3rdtx(struct drm_device *dev)
411{
412	struct ast_private *ast = dev->dev_private;
413	u8 jreg;
414
415	if (ast->chip == AST2300 || ast->chip == AST2400) {
416		jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff);
417		switch (jreg & 0x0e) {
418		case 0x04:
419			ast_init_dvo(dev);
420			break;
421		case 0x08:
422			ast_launch_m68k(dev);
423			break;
424		case 0x0c:
425			ast_init_dvo(dev);
426			break;
427		default:
428			if (ast->tx_chip_type == AST_TX_SIL164)
429				ast_init_dvo(dev);
430			else
431				ast_init_analog(dev);
432		}
433	}
434}
435