1 /* Smedia Glamo 336x/337x driver
3 * (C) 2007 by Openmoko, Inc.
4 * Author: Harald Welte <laforge@openmoko.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
23 #include <linux/module.h>
24 #include <linux/kernel.h>
25 #include <linux/errno.h>
26 #include <linux/string.h>
28 #include <linux/delay.h>
30 #include <linux/init.h>
31 #include <linux/irq.h>
32 #include <linux/interrupt.h>
33 #include <linux/workqueue.h>
34 #include <linux/platform_device.h>
35 #include <linux/kernel_stat.h>
36 #include <linux/spinlock.h>
37 #include <linux/mfd/core.h>
38 #include <linux/mfd/glamo.h>
39 #include <linux/glamofb.h>
42 #include <asm/div64.h>
46 #include "glamo-regs.h"
47 #include "glamo-core.h"
49 #define GLAMO_MEM_REFRESH_COUNT 0x100
52 * Glamo internal settings
54 * We run the memory interface from the faster PLLB on 2.6.28 kernels and
55 * above. Couple of GTA02 users report trouble with memory bus when they
56 * upgraded from 2.6.24. So this parameter allows reversion to 2.6.24
57 * scheme if their Glamo chip needs it.
59 * you can override the faster default on kernel commandline using
61 * glamo3362.slow_memory=1
66 static int slow_memory
= 0;
67 module_param(slow_memory
, int, 0644);
76 struct reg_range reg_range
[] = {
77 { 0x0000, 0x76, "General", 1 },
78 { 0x0200, 0x18, "Host Bus", 1 },
79 { 0x0300, 0x38, "Memory", 1 },
80 /* { 0x0400, 0x100, "Sensor", 0 }, */
81 /* { 0x0500, 0x300, "ISP", 0 }, */
82 /* { 0x0800, 0x400, "JPEG", 0 }, */
83 /* { 0x0c00, 0xcc, "MPEG", 0 }, */
84 { 0x1100, 0xb2, "LCD 1", 1 },
85 { 0x1200, 0x64, "LCD 2", 1 },
86 { 0x1400, 0x42, "MMC", 1 },
87 /* { 0x1500, 0x080, "MPU 0", 0 },
88 { 0x1580, 0x080, "MPU 1", 0 },
89 { 0x1600, 0x080, "Cmd Queue", 0 },
90 { 0x1680, 0x080, "RISC CPU", 0 },*/
91 { 0x1700, 0x400, "2D Unit", 0 },
92 /* { 0x1b00, 0x900, "3D Unit", 0 }, */
95 static inline void __reg_write(struct glamo_core
*glamo
,
96 u_int16_t reg
, u_int16_t val
)
98 writew(val
, glamo
->base
+ reg
);
101 static inline u_int16_t
__reg_read(struct glamo_core
*glamo
,
104 return readw(glamo
->base
+ reg
);
107 static void __reg_set_bit_mask(struct glamo_core
*glamo
,
108 u_int16_t reg
, u_int16_t mask
,
115 tmp
= __reg_read(glamo
, reg
);
118 __reg_write(glamo
, reg
, tmp
);
121 static void reg_set_bit_mask(struct glamo_core
*glamo
,
122 u_int16_t reg
, u_int16_t mask
,
125 spin_lock(&glamo
->lock
);
126 __reg_set_bit_mask(glamo
, reg
, mask
, val
);
127 spin_unlock(&glamo
->lock
);
130 static int __reg_write_batch(struct glamo_core
*glamo
,
131 uint16_t start
, size_t num
, uint16_t *regs
)
133 int end
= start
+ num
* 2
134 for(end
= start
+ num
* 2; start
< end
; start
+= 2, ++regs
) {
135 *regs
= __reg_read(glamo
, start
);
139 static inline void __reg_set_bit(struct glamo_core
*glamo
,
140 u_int16_t reg
, u_int16_t bit
)
142 __reg_set_bit_mask(glamo
, reg
, bit
, 0xffff);
145 static inline void __reg_clear_bit(struct glamo_core
*glamo
,
146 u_int16_t reg
, u_int16_t bit
)
148 __reg_set_bit_mask(glamo
, reg
, bit
, 0);
151 /***********************************************************************
152 * resources of sibling devices
153 ***********************************************************************/
155 static struct resource glamo_fb_resources
[] = {
157 .name
= "glamo-fb-regs",
158 .start
= GLAMO_REGOFS_LCD
,
159 .end
= GLAMO_REGOFS_MMC
- 1,
160 .flags
= IORESOURCE_MEM
,
162 .name
= "glamo-fb-mem",
163 .start
= GLAMO_OFFSET_FB
,
164 .end
= GLAMO_OFFSET_FB
+ GLAMO_FB_SIZE
- 1,
165 .flags
= IORESOURCE_MEM
,
169 static struct resource glamo_mmc_resources
[] = {
171 .start
= GLAMO_REGOFS_MMC
,
172 .end
= GLAMO_REGOFS_MPROC0
- 1,
173 .flags
= IORESOURCE_MEM
175 .start
= IRQ_GLAMO_MMC
,
176 .end
= IRQ_GLAMO_MMC
,
177 .flags
= IORESOURCE_IRQ
,
178 }, { /* our data buffer for MMC transfers */
179 .start
= GLAMO_OFFSET_FB
+ GLAMO_FB_SIZE
,
180 .end
= GLAMO_OFFSET_FB
+ GLAMO_FB_SIZE
+
181 GLAMO_MMC_BUFFER_SIZE
- 1,
182 .flags
= IORESOURCE_MEM
192 static struct mfd_cell glamo_cells
[] = {
195 .num_resources
= ARRAY_SIZE(glamo_fb_resources
),
196 .resources
= glamo_fb_resources
,
200 .num_resources
= ARRAY_SIZE(glamo_mmc_resources
),
201 .resources
= glamo_mmc_resources
,
203 [GLAMO_CELL_GPIO
] = {
204 .name
= "glamo-gpio",
209 /***********************************************************************
211 ***********************************************************************/
212 #define irq2glamo(x) (x - IRQ_GLAMO(0))
214 static void glamo_ack_irq(unsigned int irq
)
216 struct glamo_core
*glamo
= (struct glamo_core
*)get_irq_chip_data(irq
);
217 /* clear interrupt source */
218 __reg_write(glamo
, GLAMO_REG_IRQ_CLEAR
,
219 1 << irq2glamo(irq
));
222 static void glamo_mask_irq(unsigned int irq
)
224 struct glamo_core
*glamo
= (struct glamo_core
*)get_irq_chip_data(irq
);
227 /* clear bit in enable register */
228 tmp
= __reg_read(glamo
, GLAMO_REG_IRQ_ENABLE
);
229 tmp
&= ~(1 << irq2glamo(irq
));
230 __reg_write(glamo
, GLAMO_REG_IRQ_ENABLE
, tmp
);
233 static void glamo_unmask_irq(unsigned int irq
)
235 struct glamo_core
*glamo
= (struct glamo_core
*)get_irq_chip_data(irq
);
238 /* set bit in enable register */
239 tmp
= __reg_read(glamo
, GLAMO_REG_IRQ_ENABLE
);
240 tmp
|= (1 << irq2glamo(irq
));
241 __reg_write(glamo
, GLAMO_REG_IRQ_ENABLE
, tmp
);
244 static struct irq_chip glamo_irq_chip
= {
246 .ack
= glamo_ack_irq
,
247 .mask
= glamo_mask_irq
,
248 .unmask
= glamo_unmask_irq
,
251 static void glamo_irq_demux_handler(unsigned int irq
, struct irq_desc
*desc
)
253 struct glamo_core
*glamo
= get_irq_desc_chip_data(desc
);
254 desc
->status
&= ~(IRQ_REPLAY
| IRQ_WAITING
);
256 if (unlikely(desc
->status
& IRQ_INPROGRESS
)) {
257 desc
->status
|= (IRQ_PENDING
| IRQ_MASKED
);
258 desc
->chip
->mask(irq
);
259 desc
->chip
->ack(irq
);
262 kstat_incr_irqs_this_cpu(irq
, desc
);
264 desc
->chip
->ack(irq
);
265 desc
->status
|= IRQ_INPROGRESS
;
271 if (unlikely((desc
->status
&
272 (IRQ_PENDING
| IRQ_MASKED
| IRQ_DISABLED
)) ==
273 (IRQ_PENDING
| IRQ_MASKED
))) {
274 /* dealing with pending IRQ, unmasking */
275 desc
->chip
->unmask(irq
);
276 desc
->status
&= ~IRQ_MASKED
;
279 desc
->status
&= ~IRQ_PENDING
;
281 /* read IRQ status register */
282 irqstatus
= __reg_read(glamo
, GLAMO_REG_IRQ_STATUS
);
283 for (i
= 0; i
< 9; i
++)
284 if (irqstatus
& (1 << i
))
285 desc_handle_irq(IRQ_GLAMO(i
),
286 irq_desc
+IRQ_GLAMO(i
));
288 } while ((desc
->status
& (IRQ_PENDING
| IRQ_DISABLED
)) == IRQ_PENDING
);
290 desc
->status
&= ~IRQ_INPROGRESS
;
294 static ssize_t
regs_write(struct device
*dev
, struct device_attribute
*attr
,
295 const char *buf
, size_t count
)
297 unsigned long reg
= simple_strtoul(buf
, NULL
, 10);
298 struct glamo_core
*glamo
= dev_get_drvdata(dev
);
300 while (*buf
&& (*buf
!= ' '))
304 while (*buf
&& (*buf
== ' '))
309 printk(KERN_INFO
"reg 0x%02lX <-- 0x%04lX\n",
310 reg
, simple_strtoul(buf
, NULL
, 10));
312 __reg_write(glamo
, reg
, simple_strtoul(buf
, NULL
, 10));
317 static ssize_t
regs_read(struct device
*dev
, struct device_attribute
*attr
,
320 struct glamo_core
*glamo
= dev_get_drvdata(dev
);
324 spin_lock(&glamo
->lock
);
326 for (r
= 0; r
< ARRAY_SIZE(reg_range
); r
++) {
327 if (!reg_range
[r
].dump
)
330 end
+= sprintf(end
, "\n%s\n", reg_range
[r
].name
);
331 for (n
= reg_range
[r
].start
;
332 n
< reg_range
[r
].start
+ reg_range
[r
].count
; n
+= 2) {
333 if (((n1
++) & 7) == 0)
334 end
+= sprintf(end
, "\n%04X: ", n
);
335 end
+= sprintf(end
, "%04x ", __reg_read(glamo
, n
));
337 end
+= sprintf(end
, "\n");
343 spin_unlock(&glamo
->lock
);
348 static DEVICE_ATTR(regs
, 0644, regs_read
, regs_write
);
349 static struct attribute
*glamo_sysfs_entries
[] = {
353 static struct attribute_group glamo_attr_group
= {
355 .attrs
= glamo_sysfs_entries
,
360 /***********************************************************************
362 ***********************************************************************/
364 int __glamo_engine_enable(struct glamo_core
*glamo
, enum glamo_engine engine
)
367 case GLAMO_ENGINE_LCD
:
368 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
369 GLAMO_HOSTBUS2_MMIO_EN_LCD
,
370 GLAMO_HOSTBUS2_MMIO_EN_LCD
);
371 __reg_write(glamo
, GLAMO_REG_CLOCK_LCD
,
372 GLAMO_CLOCK_LCD_EN_M5CLK
|
373 GLAMO_CLOCK_LCD_EN_DHCLK
|
374 GLAMO_CLOCK_LCD_EN_DMCLK
|
375 GLAMO_CLOCK_LCD_EN_DCLK
|
376 GLAMO_CLOCK_LCD_DG_M5CLK
|
377 GLAMO_CLOCK_LCD_DG_DMCLK
);
378 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
379 GLAMO_CLOCK_GEN51_EN_DIV_DHCLK
|
380 GLAMO_CLOCK_GEN51_EN_DIV_DMCLK
|
381 GLAMO_CLOCK_GEN51_EN_DIV_DCLK
, 0xffff);
383 case GLAMO_ENGINE_MMC
:
384 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
385 GLAMO_HOSTBUS2_MMIO_EN_MMC
,
386 GLAMO_HOSTBUS2_MMIO_EN_MMC
);
387 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_MMC
,
388 GLAMO_CLOCK_MMC_EN_M9CLK
|
389 GLAMO_CLOCK_MMC_EN_TCLK
|
390 GLAMO_CLOCK_MMC_DG_M9CLK
|
391 GLAMO_CLOCK_MMC_DG_TCLK
,
393 /* enable the TCLK divider clk input */
394 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
395 GLAMO_CLOCK_GEN51_EN_DIV_TCLK
,
396 GLAMO_CLOCK_GEN51_EN_DIV_TCLK
);
398 case GLAMO_ENGINE_2D
:
399 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_2D
,
400 GLAMO_CLOCK_2D_EN_M7CLK
|
401 GLAMO_CLOCK_2D_EN_GCLK
|
402 GLAMO_CLOCK_2D_DG_M7CLK
|
403 GLAMO_CLOCK_2D_DG_GCLK
, 0xffff);
404 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
405 GLAMO_HOSTBUS2_MMIO_EN_2D
,
406 GLAMO_HOSTBUS2_MMIO_EN_2D
);
407 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
408 GLAMO_CLOCK_GEN51_EN_DIV_GCLK
,
411 case GLAMO_ENGINE_CMDQ
:
412 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_2D
,
413 GLAMO_CLOCK_2D_EN_M6CLK
, 0xffff);
414 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
415 GLAMO_HOSTBUS2_MMIO_EN_CQ
,
416 GLAMO_HOSTBUS2_MMIO_EN_CQ
);
417 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
418 GLAMO_CLOCK_GEN51_EN_DIV_MCLK
,
421 /* FIXME: Implementation */
426 glamo
->engine_enabled_bitfield
|= 1 << engine
;
431 int glamo_engine_enable(struct glamo_core
*glamo
, enum glamo_engine engine
)
435 spin_lock(&glamo
->lock
);
437 ret
= __glamo_engine_enable(glamo
, engine
);
439 spin_unlock(&glamo
->lock
);
443 EXPORT_SYMBOL_GPL(glamo_engine_enable
);
445 int __glamo_engine_disable(struct glamo_core
*glamo
, enum glamo_engine engine
)
448 case GLAMO_ENGINE_LCD
:
449 /* remove pixel clock to LCM */
450 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_LCD
,
451 GLAMO_CLOCK_LCD_EN_DCLK
, 0);
452 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_LCD
,
453 GLAMO_CLOCK_LCD_EN_DHCLK
|
454 GLAMO_CLOCK_LCD_EN_DMCLK
, 0);
455 /* kill memory clock */
456 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_LCD
,
457 GLAMO_CLOCK_LCD_EN_M5CLK
, 0);
458 /* stop dividing the clocks */
459 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
460 GLAMO_CLOCK_GEN51_EN_DIV_DHCLK
|
461 GLAMO_CLOCK_GEN51_EN_DIV_DMCLK
|
462 GLAMO_CLOCK_GEN51_EN_DIV_DCLK
, 0);
465 case GLAMO_ENGINE_MMC
:
466 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_MMC
,
467 GLAMO_CLOCK_MMC_EN_M9CLK
|
468 GLAMO_CLOCK_MMC_EN_TCLK
|
469 GLAMO_CLOCK_MMC_DG_M9CLK
|
470 GLAMO_CLOCK_MMC_DG_TCLK
, 0);
471 /* disable the TCLK divider clk input */
472 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
473 GLAMO_CLOCK_GEN51_EN_DIV_TCLK
, 0);
475 case GLAMO_ENGINE_CMDQ
:
476 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_2D
,
477 GLAMO_CLOCK_2D_EN_M6CLK
,
479 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
480 GLAMO_HOSTBUS2_MMIO_EN_CQ
,
481 GLAMO_HOSTBUS2_MMIO_EN_CQ
);
482 /* __reg_set_bit_mask(glamo, GLAMO_REG_CLOCK_GEN5_1,
483 GLAMO_CLOCK_GEN51_EN_DIV_MCLK,
486 case GLAMO_ENGINE_2D
:
487 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_2D
,
488 GLAMO_CLOCK_2D_EN_M7CLK
|
489 GLAMO_CLOCK_2D_EN_GCLK
|
490 GLAMO_CLOCK_2D_DG_M7CLK
|
491 GLAMO_CLOCK_2D_DG_GCLK
,
493 __reg_set_bit_mask(glamo
, GLAMO_REG_HOSTBUS(2),
494 GLAMO_HOSTBUS2_MMIO_EN_2D
,
495 GLAMO_HOSTBUS2_MMIO_EN_2D
);
496 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
,
497 GLAMO_CLOCK_GEN51_EN_DIV_GCLK
,
504 glamo
->engine_enabled_bitfield
&= ~(1 << engine
);
508 int glamo_engine_disable(struct glamo_core
*glamo
, enum glamo_engine engine
)
512 spin_lock(&glamo
->lock
);
514 ret
= __glamo_engine_disable(glamo
, engine
);
516 spin_unlock(&glamo
->lock
);
520 EXPORT_SYMBOL_GPL(glamo_engine_disable
);
522 static const u_int16_t engine_clock_regs
[__NUM_GLAMO_ENGINES
] = {
523 [GLAMO_ENGINE_LCD
] = GLAMO_REG_CLOCK_LCD
,
524 [GLAMO_ENGINE_MMC
] = GLAMO_REG_CLOCK_MMC
,
525 [GLAMO_ENGINE_ISP
] = GLAMO_REG_CLOCK_ISP
,
526 [GLAMO_ENGINE_JPEG
] = GLAMO_REG_CLOCK_JPEG
,
527 [GLAMO_ENGINE_3D
] = GLAMO_REG_CLOCK_3D
,
528 [GLAMO_ENGINE_2D
] = GLAMO_REG_CLOCK_2D
,
529 [GLAMO_ENGINE_MPEG_ENC
] = GLAMO_REG_CLOCK_MPEG
,
530 [GLAMO_ENGINE_MPEG_DEC
] = GLAMO_REG_CLOCK_MPEG
,
533 void glamo_engine_clkreg_set(struct glamo_core
*glamo
,
534 enum glamo_engine engine
,
535 u_int16_t mask
, u_int16_t val
)
537 reg_set_bit_mask(glamo
, engine_clock_regs
[engine
], mask
, val
);
539 EXPORT_SYMBOL_GPL(glamo_engine_clkreg_set
);
541 u_int16_t
glamo_engine_clkreg_get(struct glamo_core
*glamo
,
542 enum glamo_engine engine
)
546 spin_lock(&glamo
->lock
);
547 val
= __reg_read(glamo
, engine_clock_regs
[engine
]);
548 spin_unlock(&glamo
->lock
);
552 EXPORT_SYMBOL_GPL(glamo_engine_clkreg_get
);
554 static const struct glamo_script engine_div_regs
[__NUM_GLAMO_ENGINES
] = {
555 [GLAMO_ENGINE_LCD
] = {GLAMO_REG_CLOCK_GEN5_1
, GLAMO_CLOCK_GEN51_EN_DIV_DCLK
},
556 [GLAMO_ENGINE_MMC
] = {GLAMO_REG_CLOCK_GEN5_1
, GLAMO_CLOCK_GEN51_EN_DIV_TCLK
},
557 [GLAMO_ENGINE_2D
] = {GLAMO_REG_CLOCK_GEN5_1
, GLAMO_CLOCK_GEN51_EN_DIV_GCLK
},
560 void glamo_engine_div_enable(struct glamo_core
*glamo
, enum glamo_engine engine
)
562 uint16_t reg
= engine_div_regs
[engine
].reg
;
563 uint16_t bit
= engine_div_regs
[engine
].val
;
566 spin_lock(&glamo
->lock
);
567 val
= __reg_read(glamo
, reg
);
568 __reg_write(glamo
, reg
, val
| bit
);
569 spin_unlock(&glamo
->lock
);
572 EXPORT_SYMBOL_GPL(glamo_engine_div_enable
);
574 void glamo_engine_div_disable(struct glamo_core
*glamo
, enum glamo_engine engine
)
576 uint16_t reg
= engine_div_regs
[engine
].reg
;
577 uint16_t bit
= engine_div_regs
[engine
].val
;
580 spin_lock(&glamo
->lock
);
581 val
= __reg_read(glamo
, reg
);
582 __reg_write(glamo
, reg
, val
& ~bit
);
583 spin_unlock(&glamo
->lock
);
585 EXPORT_SYMBOL_GPL(glamo_engine_div_disable
);
587 static const struct glamo_script reset_regs
[] = {
588 [GLAMO_ENGINE_LCD
] = {
589 GLAMO_REG_CLOCK_LCD
, GLAMO_CLOCK_LCD_RESET
592 [GLAMO_ENGINE_HOST
] = {
593 GLAMO_REG_CLOCK_HOST
, GLAMO_CLOCK_HOST_RESET
595 [GLAMO_ENGINE_MEM
] = {
596 GLAMO_REG_CLOCK_MEM
, GLAMO_CLOCK_MEM_RESET
599 [GLAMO_ENGINE_MMC
] = {
600 GLAMO_REG_CLOCK_MMC
, GLAMO_CLOCK_MMC_RESET
602 [GLAMO_ENGINE_CMDQ
] = {
603 GLAMO_REG_CLOCK_2D
, GLAMO_CLOCK_2D_CQ_RESET
605 [GLAMO_ENGINE_2D
] = {
606 GLAMO_REG_CLOCK_2D
, GLAMO_CLOCK_2D_RESET
608 [GLAMO_ENGINE_JPEG
] = {
609 GLAMO_REG_CLOCK_JPEG
, GLAMO_CLOCK_JPEG_RESET
613 void glamo_engine_reset(struct glamo_core
*glamo
, enum glamo_engine engine
)
615 uint16_t reg
= reset_regs
[engine
].reg
;
616 uint16_t val
= reset_regs
[engine
].val
;
618 if (engine
>= ARRAY_SIZE(reset_regs
)) {
619 dev_warn(&glamo
->pdev
->dev
, "unknown engine %u ", engine
);
624 spin_lock(&glamo
->lock
);
625 __reg_set_bit(glamo
, reg
, val
);
626 __reg_clear_bit(glamo
, reg
, val
);
627 spin_unlock(&glamo
->lock
);
629 EXPORT_SYMBOL_GPL(glamo_engine_reset
);
631 int glamo_pll_rate(struct glamo_core
*glamo
,
635 unsigned int osci
= glamo
->pdata
->osci_clock_rate
;
639 reg
= __reg_read(glamo
, GLAMO_REG_PLL_GEN1
);
642 reg
= __reg_read(glamo
, GLAMO_REG_PLL_GEN3
);
649 EXPORT_SYMBOL_GPL(glamo_pll_rate
);
651 int glamo_engine_reclock(struct glamo_core
*glamo
,
652 enum glamo_engine engine
,
656 u_int16_t reg
, mask
, div
;
662 case GLAMO_ENGINE_LCD
:
664 reg
= GLAMO_REG_CLOCK_GEN7
;
667 case GLAMO_ENGINE_MMC
:
669 reg
= GLAMO_REG_CLOCK_GEN8
;
673 dev_warn(&glamo
->pdev
->dev
,
674 "reclock of engine 0x%x not supported\n", engine
);
679 pll
= glamo_pll_rate(glamo
, pll
);
683 if (div
!= 0 && pll
/ div
<= hz
)
689 dev_dbg(&glamo
->pdev
->dev
,
690 "PLL %d, kHZ %d, div %d\n", pll
, hz
/ 1000, div
);
692 reg_set_bit_mask(glamo
, reg
, mask
, div
);
693 mdelay(5); /* wait some time to stabilize */
695 return pll
/ (div
+ 1);
697 EXPORT_SYMBOL_GPL(glamo_engine_reclock
);
699 /***********************************************************************
701 ***********************************************************************/
703 int glamo_run_script(struct glamo_core
*glamo
, const struct glamo_script
*script
,
704 int len
, int may_sleep
)
707 const struct glamo_script
*line
= script
;
709 for (i
= 0; i
< len
; ++i
, ++line
) {
717 mdelay(line
->val
* 4);
720 /* spin until PLLs lock */
721 while ((__reg_read(glamo
, GLAMO_REG_PLL_GEN5
) & 3) != 3)
726 * couple of people reported artefacts with 2.6.28 changes, this
727 * allows reversion to 2.6.24 settings
731 switch (slow_memory
) {
732 /* choice 1 is the most conservative */
733 case 1: /* 3 waits on Async BB R & W, Use PLL 1 for mem bus */
734 __reg_write(glamo
, script
[i
].reg
, 0xef0);
736 case 2: /* 2 waits on Async BB R & W, Use PLL 1 for mem bus */
737 __reg_write(glamo
, script
[i
].reg
, 0xea0);
739 case 3: /* 1 waits on Async BB R & W, Use PLL 1 for mem bus */
740 __reg_write(glamo
, script
[i
].reg
, 0xe50);
742 case 4: /* 0 waits on Async BB R & W, Use PLL 1 for mem bus */
743 __reg_write(glamo
, script
[i
].reg
, 0xe00);
746 /* using PLL2 for memory bus increases CPU bandwidth significantly */
747 case 5: /* 3 waits on Async BB R & W, Use PLL 2 for mem bus */
748 __reg_write(glamo
, script
[i
].reg
, 0xef3);
750 case 6: /* 2 waits on Async BB R & W, Use PLL 2 for mem bus */
751 __reg_write(glamo
, script
[i
].reg
, 0xea3);
753 case 7: /* 1 waits on Async BB R & W, Use PLL 2 for mem bus */
754 __reg_write(glamo
, script
[i
].reg
, 0xe53);
756 /* default of 0 or >7 is fastest */
757 default: /* 0 waits on Async BB R & W, Use PLL 2 for mem bus */
758 __reg_write(glamo
, script
[i
].reg
, 0xe03);
764 __reg_write(glamo
, script
[i
].reg
, script
[i
].val
);
771 EXPORT_SYMBOL(glamo_run_script
);
773 static const struct glamo_script glamo_init_script
[] = {
774 { GLAMO_REG_CLOCK_HOST
, 0x1000 },
776 { GLAMO_REG_CLOCK_MEMORY
, 0x1000 },
777 { GLAMO_REG_CLOCK_MEMORY
, 0x2000 },
778 { GLAMO_REG_CLOCK_LCD
, 0x1000 },
779 { GLAMO_REG_CLOCK_MMC
, 0x1000 },
780 { GLAMO_REG_CLOCK_ISP
, 0x1000 },
781 { GLAMO_REG_CLOCK_ISP
, 0x3000 },
782 { GLAMO_REG_CLOCK_JPEG
, 0x1000 },
783 { GLAMO_REG_CLOCK_3D
, 0x1000 },
784 { GLAMO_REG_CLOCK_3D
, 0x3000 },
785 { GLAMO_REG_CLOCK_2D
, 0x1000 },
786 { GLAMO_REG_CLOCK_2D
, 0x3000 },
787 { GLAMO_REG_CLOCK_RISC1
, 0x1000 },
788 { GLAMO_REG_CLOCK_MPEG
, 0x3000 },
789 { GLAMO_REG_CLOCK_MPEG
, 0x3000 },
790 { GLAMO_REG_CLOCK_MPROC
, 0x1000 /*0x100f*/ },
792 { GLAMO_REG_CLOCK_HOST
, 0x0000 },
793 { GLAMO_REG_CLOCK_MEMORY
, 0x0000 },
794 { GLAMO_REG_CLOCK_LCD
, 0x0000 },
795 { GLAMO_REG_CLOCK_MMC
, 0x0000 },
797 /* unused engines must be left in reset to stop MMC block read "blackouts" */
798 { GLAMO_REG_CLOCK_ISP
, 0x0000 },
799 { GLAMO_REG_CLOCK_ISP
, 0x0000 },
800 { GLAMO_REG_CLOCK_JPEG
, 0x0000 },
801 { GLAMO_REG_CLOCK_3D
, 0x0000 },
802 { GLAMO_REG_CLOCK_3D
, 0x0000 },
803 { GLAMO_REG_CLOCK_2D
, 0x0000 },
804 { GLAMO_REG_CLOCK_2D
, 0x0000 },
805 { GLAMO_REG_CLOCK_RISC1
, 0x0000 },
806 { GLAMO_REG_CLOCK_MPEG
, 0x0000 },
807 { GLAMO_REG_CLOCK_MPEG
, 0x0000 },
809 { GLAMO_REG_PLL_GEN1
, 0x05db }, /* 48MHz */
810 { GLAMO_REG_PLL_GEN3
, 0x0aba }, /* 90MHz */
813 * b9 of this register MUST be zero to get any interrupts on INT#
814 * the other set bits enable all the engine interrupt sources
816 { GLAMO_REG_IRQ_ENABLE
, 0x01ff },
817 { GLAMO_REG_CLOCK_GEN6
, 0x2000 },
818 { GLAMO_REG_CLOCK_GEN7
, 0x0101 },
819 { GLAMO_REG_CLOCK_GEN8
, 0x0100 },
820 { GLAMO_REG_CLOCK_HOST
, 0x000d },
822 * b7..b4 = 0 = no wait states on read or write
823 * b0 = 1 select PLL2 for Host interface, b1 = enable it
825 { 0x200, 0x0e03 /* this is replaced by script parser */ },
831 /* S-Media recommended "set tiling mode to 512 mode for memory access
832 * more efficiency when 640x480" */
833 { GLAMO_REG_MEM_TYPE
, 0x0c74 }, /* 8MB, 16 word pg wr+rd */
834 { GLAMO_REG_MEM_GEN
, 0xafaf }, /* 63 grants min + max */
836 { GLAMO_REGOFS_HOSTBUS
+ 2, 0xffff }, /* enable on MMIO*/
838 { GLAMO_REG_MEM_TIMING1
, 0x0108 },
839 { GLAMO_REG_MEM_TIMING2
, 0x0010 }, /* Taa = 3 MCLK */
840 { GLAMO_REG_MEM_TIMING3
, 0x0000 },
841 { GLAMO_REG_MEM_TIMING4
, 0x0000 }, /* CE1# delay fall/rise */
842 { GLAMO_REG_MEM_TIMING5
, 0x0000 }, /* UB# LB# */
843 { GLAMO_REG_MEM_TIMING6
, 0x0000 }, /* OE# */
844 { GLAMO_REG_MEM_TIMING7
, 0x0000 }, /* WE# */
845 { GLAMO_REG_MEM_TIMING8
, 0x1002 }, /* MCLK delay, was 0x1000 */
846 { GLAMO_REG_MEM_TIMING9
, 0x6006 },
847 { GLAMO_REG_MEM_TIMING10
, 0x00ff },
848 { GLAMO_REG_MEM_TIMING11
, 0x0001 },
849 { GLAMO_REG_MEM_POWER1
, 0x0020 },
850 { GLAMO_REG_MEM_POWER2
, 0x0000 },
851 { GLAMO_REG_MEM_DRAM1
, 0x0000 },
853 { GLAMO_REG_MEM_DRAM1
, 0xc100 },
855 { GLAMO_REG_MEM_DRAM1
, 0xe100 },
856 { GLAMO_REG_MEM_DRAM2
, 0x01d6 },
857 { GLAMO_REG_CLOCK_MEMORY
, 0x000b },
860 static struct glamo_script glamo_resume_script
[] = {
862 { GLAMO_REG_PLL_GEN1
, 0x05db }, /* 48MHz */
863 { GLAMO_REG_PLL_GEN3
, 0x0aba }, /* 90MHz */
864 { GLAMO_REG_DFT_GEN6
, 1 },
870 * b9 of this register MUST be zero to get any interrupts on INT#
871 * the other set bits enable all the engine interrupt sources
873 { GLAMO_REG_IRQ_ENABLE
, 0x01ff },
874 { GLAMO_REG_CLOCK_HOST
, 0x0018 },
875 { GLAMO_REG_CLOCK_GEN5_1
, 0x18b1 },
877 { GLAMO_REG_MEM_DRAM1
, 0x0000 },
879 { GLAMO_REG_MEM_DRAM1
, 0xc100 },
881 { GLAMO_REG_MEM_DRAM1
, 0xe100 },
882 { GLAMO_REG_MEM_DRAM2
, 0x01d6 },
883 { GLAMO_REG_CLOCK_MEMORY
, 0x000b },
892 static void glamo_power(struct glamo_core
*glamo
,
893 enum glamo_power new_state
)
898 spin_lock_irqsave(&glamo
->lock
, flags
);
900 dev_info(&glamo
->pdev
->dev
, "***** glamo_power -> %d\n", new_state
);
904 static const REG_VALUE_MASK_TYPE reg_powerOn[] =
906 { REG_GEN_DFT6, REG_BIT_ALL, REG_DATA(1u << 0) },
907 { REG_GEN_PLL3, 0u, REG_DATA(1u << 13) },
908 { REG_GEN_MEM_CLK, REG_BIT_ALL, REG_BIT_EN_MOCACLK },
909 { REG_MEM_DRAM2, 0u, REG_BIT_EN_DEEP_POWER_DOWN },
910 { REG_MEM_DRAM1, 0u, REG_BIT_SELF_REFRESH }
913 static const REG_VALUE_MASK_TYPE reg_powerStandby[] =
915 { REG_MEM_DRAM1, REG_BIT_ALL, REG_BIT_SELF_REFRESH },
916 { REG_GEN_MEM_CLK, 0u, REG_BIT_EN_MOCACLK },
917 { REG_GEN_PLL3, REG_BIT_ALL, REG_DATA(1u << 13) },
918 { REG_GEN_DFT5, REG_BIT_ALL, REG_DATA(1u << 0) }
921 static const REG_VALUE_MASK_TYPE reg_powerSuspend[] =
923 { REG_MEM_DRAM2, REG_BIT_ALL, REG_BIT_EN_DEEP_POWER_DOWN },
924 { REG_GEN_MEM_CLK, 0u, REG_BIT_EN_MOCACLK },
925 { REG_GEN_PLL3, REG_BIT_ALL, REG_DATA(1u << 13) },
926 { REG_GEN_DFT5, REG_BIT_ALL, REG_DATA(1u << 0) }
934 * glamo state on resume is nondeterministic in some
935 * fundamental way, it has also been observed that the
936 * Glamo reset pin can get asserted by, eg, touching it with
937 * a scope probe. So the only answer is to roll with it and
938 * force an external reset on the Glamo during resume.
941 (glamo
->pdata
->glamo_external_reset
)(0);
943 (glamo
->pdata
->glamo_external_reset
)(1);
946 glamo_run_script(glamo
, glamo_init_script
,
947 ARRAY_SIZE(glamo_init_script
), 0);
951 case GLAMO_POWER_SUSPEND
:
953 /* nuke interrupts */
954 __reg_write(glamo
, GLAMO_REG_IRQ_ENABLE
, 0x200);
956 /* stash a copy of which engines were running */
957 glamo
->engine_enabled_bitfield_suspend
=
958 glamo
->engine_enabled_bitfield
;
960 /* take down each engine before we kill mem and pll */
961 for (n
= 0; n
< __NUM_GLAMO_ENGINES
; n
++)
962 if (glamo
->engine_enabled_bitfield
& (1 << n
))
963 __glamo_engine_disable(glamo
, n
);
965 /* enable self-refresh */
967 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
,
968 GLAMO_MEM_DRAM1_EN_DRAM_REFRESH
|
969 GLAMO_MEM_DRAM1_EN_GATE_CKE
|
970 GLAMO_MEM_DRAM1_SELF_REFRESH
|
971 GLAMO_MEM_REFRESH_COUNT
);
972 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
,
973 GLAMO_MEM_DRAM1_EN_MODEREG_SET
|
974 GLAMO_MEM_DRAM1_EN_DRAM_REFRESH
|
975 GLAMO_MEM_DRAM1_EN_GATE_CKE
|
976 GLAMO_MEM_DRAM1_SELF_REFRESH
|
977 GLAMO_MEM_REFRESH_COUNT
);
979 /* force RAM into deep powerdown */
981 __reg_write(glamo
, GLAMO_REG_MEM_DRAM2
,
982 GLAMO_MEM_DRAM2_DEEP_PWRDOWN
|
985 (1 << 2) | /* tRCD */
986 2); /* CAS latency */
988 /* disable clocks to memory */
989 __reg_write(glamo
, GLAMO_REG_CLOCK_MEMORY
, 0);
991 /* all dividers from OSCI */
992 __reg_set_bit_mask(glamo
, GLAMO_REG_CLOCK_GEN5_1
, 0x400, 0x400);
994 /* PLL2 into bypass */
995 __reg_set_bit_mask(glamo
, GLAMO_REG_PLL_GEN3
, 1 << 12, 1 << 12);
997 __reg_write(glamo
, 0x200, 0x0e00);
1000 /* kill PLLS 1 then 2 */
1001 __reg_write(glamo
, GLAMO_REG_DFT_GEN5
, 0x0001);
1002 __reg_set_bit_mask(glamo
, GLAMO_REG_PLL_GEN3
, 1 << 13, 1 << 13);
1007 spin_unlock_irqrestore(&glamo
->lock
, flags
);
1011 #define MEMDETECT_RETRY 6
1012 static unsigned int detect_memsize(struct glamo_core
*glamo
)
1016 /*static const u_int16_t pattern[] = {
1017 0x1111, 0x8a8a, 0x2222, 0x7a7a,
1018 0x3333, 0x6a6a, 0x4444, 0x5a5a,
1019 0x5555, 0x4a4a, 0x6666, 0x3a3a,
1020 0x7777, 0x2a2a, 0x8888, 0x1a1a
1023 for (i
= 0; i
< MEMDETECT_RETRY
; i
++) {
1024 switch (glamo
->type
) {
1026 __reg_write(glamo
, GLAMO_REG_MEM_TYPE
, 0x0072);
1027 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
, 0xc100);
1030 switch (glamo
->revision
) {
1031 case GLAMO_CORE_REV_A0
:
1033 __reg_write(glamo
, GLAMO_REG_MEM_TYPE
,
1036 __reg_write(glamo
, GLAMO_REG_MEM_TYPE
,
1039 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
, 0x0000);
1041 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
, 0xc100);
1045 __reg_write(glamo
, GLAMO_REG_MEM_TYPE
,
1048 __reg_write(glamo
, GLAMO_REG_MEM_TYPE
,
1051 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
, 0x0000);
1053 __reg_write(glamo
, GLAMO_REG_MEM_DRAM1
, 0xe100);
1064 /* FIXME: finish implementation */
1065 for (j
= 0; j
< 8; j
++) {
1074 /* Find out if we can support this version of the Glamo chip */
1075 static int glamo_supported(struct glamo_core
*glamo
)
1077 u_int16_t dev_id
, rev_id
; /*, memsize; */
1079 dev_id
= __reg_read(glamo
, GLAMO_REG_DEVICE_ID
);
1080 rev_id
= __reg_read(glamo
, GLAMO_REG_REVISION_ID
);
1085 case GLAMO_CORE_REV_A2
:
1087 case GLAMO_CORE_REV_A0
:
1088 case GLAMO_CORE_REV_A1
:
1089 case GLAMO_CORE_REV_A3
:
1090 dev_warn(&glamo
->pdev
->dev
, "untested core revision "
1091 "%04x, your mileage may vary\n", rev_id
);
1094 dev_warn(&glamo
->pdev
->dev
, "unknown glamo revision "
1095 "%04x, your mileage may vary\n", rev_id
);
1096 /* maybe should abort ? */
1102 dev_err(&glamo
->pdev
->dev
, "unsupported Glamo device %04x\n",
1107 dev_dbg(&glamo
->pdev
->dev
, "Detected Glamo core %04x Revision %04x "
1108 "(%uHz CPU / %uHz Memory)\n", dev_id
, rev_id
,
1109 glamo_pll_rate(glamo
, GLAMO_PLL1
),
1110 glamo_pll_rate(glamo
, GLAMO_PLL2
));
1115 static int __init
glamo_probe(struct platform_device
*pdev
)
1118 struct glamo_core
*glamo
;
1120 glamo
= kmalloc(GFP_KERNEL
, sizeof(*glamo
));
1124 spin_lock_init(&glamo
->lock
);
1126 glamo
->mem
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1127 glamo
->irq
= platform_get_irq(pdev
, 0);
1128 glamo
->pdata
= pdev
->dev
.platform_data
;
1129 if (!glamo
->mem
|| !glamo
->pdata
) {
1130 dev_err(&pdev
->dev
, "platform device with no MEM/PDATA ?\n");
1135 /* register a number of sibling devices whoise IOMEM resources
1136 * are siblings of pdev's IOMEM resource */
1138 /* only remap the generic, hostbus and memory controller registers */
1139 glamo
->base
= ioremap(glamo
->mem
->start
, 0x4000 /*GLAMO_REGOFS_VIDCAP*/);
1141 dev_err(&pdev
->dev
, "failed to ioremap() memory region\n");
1145 platform_set_drvdata(pdev
, glamo
);
1147 (glamo
->pdata
->glamo_external_reset
)(0);
1149 (glamo
->pdata
->glamo_external_reset
)(1);
1153 * finally set the mfd interrupts up
1154 * can't do them earlier or sibling probes blow up
1157 for (irq
= IRQ_GLAMO(0); irq
<= IRQ_GLAMO(8); irq
++) {
1158 set_irq_chip_and_handler(irq
, &glamo_irq_chip
, handle_level_irq
);
1159 set_irq_flags(irq
, IRQF_VALID
);
1160 set_irq_chip_data(irq
, glamo
);
1163 if (glamo
->pdata
->glamo_irq_is_wired
&&
1164 !glamo
->pdata
->glamo_irq_is_wired()) {
1165 set_irq_chained_handler(glamo
->irq
, glamo_irq_demux_handler
);
1166 set_irq_type(glamo
->irq
, IRQ_TYPE_EDGE_FALLING
);
1167 set_irq_chip_data(glamo
->irq
, glamo
);
1168 dev_info(&pdev
->dev
, "Glamo interrupt registered\n");
1169 glamo
->irq_works
= 1;
1171 dev_err(&pdev
->dev
, "Glamo interrupt not used\n");
1172 glamo
->irq_works
= 0;
1175 /* confirm it isn't insane version */
1176 if (!glamo_supported(glamo
)) {
1177 dev_err(&pdev
->dev
, "This Glamo is not supported\n");
1182 rc
= sysfs_create_group(&pdev
->dev
.kobj
, &glamo_attr_group
);
1184 dev_err(&pdev
->dev
, "cannot create sysfs group\n");
1188 /* init the chip with canned register set */
1190 dev_dbg(&glamo
->pdev
->dev
, "running init script\n");
1191 glamo_run_script(glamo
, glamo_init_script
,
1192 ARRAY_SIZE(glamo_init_script
), 1);
1194 dev_info(&glamo
->pdev
->dev
, "Glamo core PLL1: %uHz, PLL2: %uHz\n",
1195 glamo_pll_rate(glamo
, GLAMO_PLL1
),
1196 glamo_pll_rate(glamo
, GLAMO_PLL2
));
1198 mfd_add_devices(&pdev
->dev
, pdev
->id
, glamo_cells
,
1199 ARRAY_SIZE(glamo_cells
),
1202 /* only request the generic, hostbus and memory controller MMIO */
1203 glamo
->mem
= request_mem_region(glamo
->mem
->start
,
1204 GLAMO_REGOFS_VIDCAP
, "glamo-core");
1206 dev_err(&pdev
->dev
, "failed to request memory region\n");
1213 disable_irq(glamo
->irq
);
1214 set_irq_chained_handler(glamo
->irq
, NULL
);
1215 set_irq_chip_data(glamo
->irq
, NULL
);
1217 for (irq
= IRQ_GLAMO(0); irq
<= IRQ_GLAMO(8); irq
++) {
1218 set_irq_flags(irq
, 0);
1219 set_irq_chip(irq
, NULL
);
1220 set_irq_chip_data(irq
, NULL
);
1223 iounmap(glamo
->base
);
1225 platform_set_drvdata(pdev
, NULL
);
1231 static int glamo_remove(struct platform_device
*pdev
)
1233 struct glamo_core
*glamo
= platform_get_drvdata(pdev
);
1236 disable_irq(glamo
->irq
);
1237 set_irq_chained_handler(glamo
->irq
, NULL
);
1238 set_irq_chip_data(glamo
->irq
, NULL
);
1240 for (irq
= IRQ_GLAMO(0); irq
<= IRQ_GLAMO(8); irq
++) {
1241 set_irq_flags(irq
, 0);
1242 set_irq_chip(irq
, NULL
);
1243 set_irq_chip_data(irq
, NULL
);
1246 platform_set_drvdata(pdev
, NULL
);
1247 mfd_remove_devices(&pdev
->dev
);
1248 iounmap(glamo
->base
);
1249 release_mem_region(glamo
->mem
->start
, GLAMO_REGOFS_VIDCAP
);
1257 static int glamo_suspend(struct device
*dev
)
1259 struct glamo_core
*glamo
= dev_get_drvdata(dev
);
1260 glamo
->suspending
= 1;
1261 glamo_power(glamo
, GLAMO_POWER_SUSPEND
);
1266 static int glamo_resume(struct device
*dev
)
1268 struct glamo_core
*glamo
= dev_get_drvdata(dev
);
1269 glamo_power(glamo
, GLAMO_POWER_ON
);
1270 glamo
->suspending
= 0;
1274 static struct dev_pm_ops glamo_pm_ops
= {
1275 .suspend
= glamo_suspend
,
1276 .resume
= glamo_resume
,
1279 #define GLAMO_PM_OPS (&glamo_pm_ops)
1282 #define GLAMO_PM_OPS NULL
1285 static struct platform_driver glamo_driver
= {
1286 .probe
= glamo_probe
,
1287 .remove
= glamo_remove
,
1289 .name
= "glamo3362",
1290 .owner
= THIS_MODULE
,
1295 static int __devinit
glamo_init(void)
1297 return platform_driver_register(&glamo_driver
);
1300 static void __exit
glamo_cleanup(void)
1302 platform_driver_unregister(&glamo_driver
);
1305 module_init(glamo_init
);
1306 module_exit(glamo_cleanup
);
1308 MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
1309 MODULE_DESCRIPTION("Smedia Glamo 336x/337x core/resource driver");
1310 MODULE_LICENSE("GPL");