2 * linux/drivers/video/omap2/dss/dsi.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #define DSS_SUBSYS_NAME "DSI"
22 #include <linux/kernel.h>
24 #include <linux/clk.h>
25 #include <linux/device.h>
26 #include <linux/err.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/mutex.h>
30 #include <linux/semaphore.h>
31 #include <linux/seq_file.h>
32 #include <linux/platform_device.h>
33 #include <linux/regulator/consumer.h>
34 #include <linux/wait.h>
35 #include <linux/workqueue.h>
37 #include <video/omapdss.h>
38 #include <plat/clock.h>
41 #include "dss_features.h"
43 /*#define VERBOSE_IRQ*/
44 #define DSI_CATCH_MISSING_TE
46 struct dsi_reg { u16 idx; };
48 #define DSI_REG(idx) ((const struct dsi_reg) { idx })
50 #define DSI_SZ_REGS SZ_1K
51 /* DSI Protocol Engine */
53 #define DSI_REVISION DSI_REG(0x0000)
54 #define DSI_SYSCONFIG DSI_REG(0x0010)
55 #define DSI_SYSSTATUS DSI_REG(0x0014)
56 #define DSI_IRQSTATUS DSI_REG(0x0018)
57 #define DSI_IRQENABLE DSI_REG(0x001C)
58 #define DSI_CTRL DSI_REG(0x0040)
59 #define DSI_COMPLEXIO_CFG1 DSI_REG(0x0048)
60 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(0x004C)
61 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(0x0050)
62 #define DSI_CLK_CTRL DSI_REG(0x0054)
63 #define DSI_TIMING1 DSI_REG(0x0058)
64 #define DSI_TIMING2 DSI_REG(0x005C)
65 #define DSI_VM_TIMING1 DSI_REG(0x0060)
66 #define DSI_VM_TIMING2 DSI_REG(0x0064)
67 #define DSI_VM_TIMING3 DSI_REG(0x0068)
68 #define DSI_CLK_TIMING DSI_REG(0x006C)
69 #define DSI_TX_FIFO_VC_SIZE DSI_REG(0x0070)
70 #define DSI_RX_FIFO_VC_SIZE DSI_REG(0x0074)
71 #define DSI_COMPLEXIO_CFG2 DSI_REG(0x0078)
72 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(0x007C)
73 #define DSI_VM_TIMING4 DSI_REG(0x0080)
74 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(0x0084)
75 #define DSI_VM_TIMING5 DSI_REG(0x0088)
76 #define DSI_VM_TIMING6 DSI_REG(0x008C)
77 #define DSI_VM_TIMING7 DSI_REG(0x0090)
78 #define DSI_STOPCLK_TIMING DSI_REG(0x0094)
79 #define DSI_VC_CTRL(n) DSI_REG(0x0100 + (n * 0x20))
80 #define DSI_VC_TE(n) DSI_REG(0x0104 + (n * 0x20))
81 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(0x0108 + (n * 0x20))
82 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(0x010C + (n * 0x20))
83 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(0x0110 + (n * 0x20))
84 #define DSI_VC_IRQSTATUS(n) DSI_REG(0x0118 + (n * 0x20))
85 #define DSI_VC_IRQENABLE(n) DSI_REG(0x011C + (n * 0x20))
89 #define DSI_DSIPHY_CFG0 DSI_REG(0x200 + 0x0000)
90 #define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004)
91 #define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008)
92 #define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014)
94 /* DSI_PLL_CTRL_SCP */
96 #define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000)
97 #define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004)
98 #define DSI_PLL_GO DSI_REG(0x300 + 0x0008)
99 #define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C)
100 #define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010)
102 #define REG_GET(idx, start, end) \
103 FLD_GET(dsi_read_reg(idx), start, end)
105 #define REG_FLD_MOD(idx, val, start, end) \
106 dsi_write_reg(idx, FLD_MOD(dsi_read_reg(idx), val, start, end))
108 /* Global interrupts */
109 #define DSI_IRQ_VC0 (1 << 0)
110 #define DSI_IRQ_VC1 (1 << 1)
111 #define DSI_IRQ_VC2 (1 << 2)
112 #define DSI_IRQ_VC3 (1 << 3)
113 #define DSI_IRQ_WAKEUP (1 << 4)
114 #define DSI_IRQ_RESYNC (1 << 5)
115 #define DSI_IRQ_PLL_LOCK (1 << 7)
116 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
117 #define DSI_IRQ_PLL_RECALL (1 << 9)
118 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
119 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
120 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
121 #define DSI_IRQ_TE_TRIGGER (1 << 16)
122 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
123 #define DSI_IRQ_SYNC_LOST (1 << 18)
124 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
125 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
126 #define DSI_IRQ_ERROR_MASK \
127 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
129 #define DSI_IRQ_CHANNEL_MASK 0xf
131 /* Virtual channel interrupts */
132 #define DSI_VC_IRQ_CS (1 << 0)
133 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
134 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
135 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
136 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
137 #define DSI_VC_IRQ_BTA (1 << 5)
138 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
139 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
140 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
141 #define DSI_VC_IRQ_ERROR_MASK \
142 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
143 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
144 DSI_VC_IRQ_FIFO_TX_UDF)
146 /* ComplexIO interrupts */
147 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
148 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
149 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
150 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
151 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
152 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
153 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
154 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
155 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
156 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
157 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
158 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
159 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
160 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
161 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
162 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
163 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
164 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
165 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
166 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
167 #define DSI_CIO_IRQ_ERROR_MASK \
168 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
169 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
170 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRCONTROL1 | \
171 DSI_CIO_IRQ_ERRCONTROL2 | DSI_CIO_IRQ_ERRCONTROL3 | \
172 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
173 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
174 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3)
176 #define DSI_DT_DCS_SHORT_WRITE_0 0x05
177 #define DSI_DT_DCS_SHORT_WRITE_1 0x15
178 #define DSI_DT_DCS_READ 0x06
179 #define DSI_DT_SET_MAX_RET_PKG_SIZE 0x37
180 #define DSI_DT_NULL_PACKET 0x09
181 #define DSI_DT_DCS_LONG_WRITE 0x39
183 #define DSI_DT_RX_ACK_WITH_ERR 0x02
184 #define DSI_DT_RX_DCS_LONG_READ 0x1c
185 #define DSI_DT_RX_SHORT_READ_1 0x21
186 #define DSI_DT_RX_SHORT_READ_2 0x22
188 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
190 #define DSI_MAX_NR_ISRS 2
192 struct dsi_isr_data {
200 DSI_FIFO_SIZE_32 = 1,
201 DSI_FIFO_SIZE_64 = 2,
202 DSI_FIFO_SIZE_96 = 3,
203 DSI_FIFO_SIZE_128 = 4,
211 struct dsi_update_region {
213 struct omap_dss_device *device;
216 struct dsi_irq_stats {
217 unsigned long last_reset;
219 unsigned dsi_irqs[32];
220 unsigned vc_irqs[4][32];
221 unsigned cio_irqs[32];
224 struct dsi_isr_tables {
225 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
226 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
227 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
232 struct platform_device *pdev;
236 struct dsi_clock_info current_cinfo;
238 struct regulator *vdds_dsi_reg;
241 enum dsi_vc_mode mode;
242 struct omap_dss_device *dssdev;
243 enum fifo_size fifo_size;
248 struct semaphore bus_lock;
253 struct dsi_isr_tables isr_tables;
254 /* space for a copy used by the interrupt handler */
255 struct dsi_isr_tables isr_tables_copy;
258 struct dsi_update_region update_region;
262 struct workqueue_struct *workqueue;
264 void (*framedone_callback)(int, void *);
265 void *framedone_data;
267 struct delayed_work framedone_timeout_work;
269 #ifdef DSI_CATCH_MISSING_TE
270 struct timer_list te_timer;
273 unsigned long cache_req_pck;
274 unsigned long cache_clk_freq;
275 struct dsi_clock_info cache_cinfo;
278 spinlock_t errors_lock;
280 ktime_t perf_setup_time;
281 ktime_t perf_start_time;
286 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
287 spinlock_t irq_stats_lock;
288 struct dsi_irq_stats irq_stats;
290 /* DSI PLL Parameter Ranges */
291 unsigned long regm_max, regn_max;
292 unsigned long regm_dispc_max, regm_dsi_max;
293 unsigned long fint_min, fint_max;
294 unsigned long lpdiv_max;
298 static unsigned int dsi_perf;
299 module_param_named(dsi_perf, dsi_perf, bool, 0644);
302 static inline void dsi_write_reg(const struct dsi_reg idx, u32 val)
304 __raw_writel(val, dsi.base + idx.idx);
307 static inline u32 dsi_read_reg(const struct dsi_reg idx)
309 return __raw_readl(dsi.base + idx.idx);
313 void dsi_save_context(void)
317 void dsi_restore_context(void)
321 void dsi_bus_lock(void)
325 EXPORT_SYMBOL(dsi_bus_lock);
327 void dsi_bus_unlock(void)
331 EXPORT_SYMBOL(dsi_bus_unlock);
333 static bool dsi_bus_is_locked(void)
335 return dsi.bus_lock.count == 0;
338 static void dsi_completion_handler(void *data, u32 mask)
340 complete((struct completion *)data);
343 static inline int wait_for_bit_change(const struct dsi_reg idx, int bitnum,
348 while (REG_GET(idx, bitnum, bitnum) != value) {
357 static void dsi_perf_mark_setup(void)
359 dsi.perf_setup_time = ktime_get();
362 static void dsi_perf_mark_start(void)
364 dsi.perf_start_time = ktime_get();
367 static void dsi_perf_show(const char *name)
369 ktime_t t, setup_time, trans_time;
371 u32 setup_us, trans_us, total_us;
378 setup_time = ktime_sub(dsi.perf_start_time, dsi.perf_setup_time);
379 setup_us = (u32)ktime_to_us(setup_time);
383 trans_time = ktime_sub(t, dsi.perf_start_time);
384 trans_us = (u32)ktime_to_us(trans_time);
388 total_us = setup_us + trans_us;
390 total_bytes = dsi.update_region.w *
391 dsi.update_region.h *
392 dsi.update_region.device->ctrl.pixel_size / 8;
394 printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), "
395 "%u bytes, %u kbytes/sec\n",
400 1000*1000 / total_us,
402 total_bytes * 1000 / total_us);
405 #define dsi_perf_mark_setup()
406 #define dsi_perf_mark_start()
407 #define dsi_perf_show(x)
410 static void print_irq_status(u32 status)
416 if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0)
419 printk(KERN_DEBUG "DSI IRQ: 0x%x: ", status);
422 if (status & DSI_IRQ_##x) \
448 static void print_irq_status_vc(int channel, u32 status)
454 if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
457 printk(KERN_DEBUG "DSI VC(%d) IRQ 0x%x: ", channel, status);
460 if (status & DSI_VC_IRQ_##x) \
477 static void print_irq_status_cio(u32 status)
482 printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status);
485 if (status & DSI_CIO_IRQ_##x) \
499 PIS(ERRCONTENTIONLP0_1);
500 PIS(ERRCONTENTIONLP1_1);
501 PIS(ERRCONTENTIONLP0_2);
502 PIS(ERRCONTENTIONLP1_2);
503 PIS(ERRCONTENTIONLP0_3);
504 PIS(ERRCONTENTIONLP1_3);
505 PIS(ULPSACTIVENOT_ALL0);
506 PIS(ULPSACTIVENOT_ALL1);
512 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
513 static void dsi_collect_irq_stats(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
517 spin_lock(&dsi.irq_stats_lock);
519 dsi.irq_stats.irq_count++;
520 dss_collect_irq_stats(irqstatus, dsi.irq_stats.dsi_irqs);
522 for (i = 0; i < 4; ++i)
523 dss_collect_irq_stats(vcstatus[i], dsi.irq_stats.vc_irqs[i]);
525 dss_collect_irq_stats(ciostatus, dsi.irq_stats.cio_irqs);
527 spin_unlock(&dsi.irq_stats_lock);
530 #define dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus)
533 static int debug_irq;
535 static void dsi_handle_irq_errors(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
539 if (irqstatus & DSI_IRQ_ERROR_MASK) {
540 DSSERR("DSI error, irqstatus %x\n", irqstatus);
541 print_irq_status(irqstatus);
542 spin_lock(&dsi.errors_lock);
543 dsi.errors |= irqstatus & DSI_IRQ_ERROR_MASK;
544 spin_unlock(&dsi.errors_lock);
545 } else if (debug_irq) {
546 print_irq_status(irqstatus);
549 for (i = 0; i < 4; ++i) {
550 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
551 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
553 print_irq_status_vc(i, vcstatus[i]);
554 } else if (debug_irq) {
555 print_irq_status_vc(i, vcstatus[i]);
559 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
560 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
561 print_irq_status_cio(ciostatus);
562 } else if (debug_irq) {
563 print_irq_status_cio(ciostatus);
567 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
568 unsigned isr_array_size, u32 irqstatus)
570 struct dsi_isr_data *isr_data;
573 for (i = 0; i < isr_array_size; i++) {
574 isr_data = &isr_array[i];
575 if (isr_data->isr && isr_data->mask & irqstatus)
576 isr_data->isr(isr_data->arg, irqstatus);
580 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
581 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
585 dsi_call_isrs(isr_tables->isr_table,
586 ARRAY_SIZE(isr_tables->isr_table),
589 for (i = 0; i < 4; ++i) {
590 if (vcstatus[i] == 0)
592 dsi_call_isrs(isr_tables->isr_table_vc[i],
593 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
598 dsi_call_isrs(isr_tables->isr_table_cio,
599 ARRAY_SIZE(isr_tables->isr_table_cio),
603 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
605 u32 irqstatus, vcstatus[4], ciostatus;
608 spin_lock(&dsi.irq_lock);
610 irqstatus = dsi_read_reg(DSI_IRQSTATUS);
612 /* IRQ is not for us */
614 spin_unlock(&dsi.irq_lock);
618 dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
619 /* flush posted write */
620 dsi_read_reg(DSI_IRQSTATUS);
622 for (i = 0; i < 4; ++i) {
623 if ((irqstatus & (1 << i)) == 0) {
628 vcstatus[i] = dsi_read_reg(DSI_VC_IRQSTATUS(i));
630 dsi_write_reg(DSI_VC_IRQSTATUS(i), vcstatus[i]);
631 /* flush posted write */
632 dsi_read_reg(DSI_VC_IRQSTATUS(i));
635 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
636 ciostatus = dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
638 dsi_write_reg(DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
639 /* flush posted write */
640 dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
645 #ifdef DSI_CATCH_MISSING_TE
646 if (irqstatus & DSI_IRQ_TE_TRIGGER)
647 del_timer(&dsi.te_timer);
650 /* make a copy and unlock, so that isrs can unregister
652 memcpy(&dsi.isr_tables_copy, &dsi.isr_tables, sizeof(dsi.isr_tables));
654 spin_unlock(&dsi.irq_lock);
656 dsi_handle_isrs(&dsi.isr_tables_copy, irqstatus, vcstatus, ciostatus);
658 dsi_handle_irq_errors(irqstatus, vcstatus, ciostatus);
660 dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus);
665 /* dsi.irq_lock has to be locked by the caller */
666 static void _omap_dsi_configure_irqs(struct dsi_isr_data *isr_array,
667 unsigned isr_array_size, u32 default_mask,
668 const struct dsi_reg enable_reg,
669 const struct dsi_reg status_reg)
671 struct dsi_isr_data *isr_data;
678 for (i = 0; i < isr_array_size; i++) {
679 isr_data = &isr_array[i];
681 if (isr_data->isr == NULL)
684 mask |= isr_data->mask;
687 old_mask = dsi_read_reg(enable_reg);
688 /* clear the irqstatus for newly enabled irqs */
689 dsi_write_reg(status_reg, (mask ^ old_mask) & mask);
690 dsi_write_reg(enable_reg, mask);
692 /* flush posted writes */
693 dsi_read_reg(enable_reg);
694 dsi_read_reg(status_reg);
697 /* dsi.irq_lock has to be locked by the caller */
698 static void _omap_dsi_set_irqs(void)
700 u32 mask = DSI_IRQ_ERROR_MASK;
701 #ifdef DSI_CATCH_MISSING_TE
702 mask |= DSI_IRQ_TE_TRIGGER;
704 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table,
705 ARRAY_SIZE(dsi.isr_tables.isr_table), mask,
706 DSI_IRQENABLE, DSI_IRQSTATUS);
709 /* dsi.irq_lock has to be locked by the caller */
710 static void _omap_dsi_set_irqs_vc(int vc)
712 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_vc[vc],
713 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[vc]),
714 DSI_VC_IRQ_ERROR_MASK,
715 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
718 /* dsi.irq_lock has to be locked by the caller */
719 static void _omap_dsi_set_irqs_cio(void)
721 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_cio,
722 ARRAY_SIZE(dsi.isr_tables.isr_table_cio),
723 DSI_CIO_IRQ_ERROR_MASK,
724 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
727 static void _dsi_initialize_irq(void)
732 spin_lock_irqsave(&dsi.irq_lock, flags);
734 memset(&dsi.isr_tables, 0, sizeof(dsi.isr_tables));
736 _omap_dsi_set_irqs();
737 for (vc = 0; vc < 4; ++vc)
738 _omap_dsi_set_irqs_vc(vc);
739 _omap_dsi_set_irqs_cio();
741 spin_unlock_irqrestore(&dsi.irq_lock, flags);
744 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
745 struct dsi_isr_data *isr_array, unsigned isr_array_size)
747 struct dsi_isr_data *isr_data;
753 /* check for duplicate entry and find a free slot */
755 for (i = 0; i < isr_array_size; i++) {
756 isr_data = &isr_array[i];
758 if (isr_data->isr == isr && isr_data->arg == arg &&
759 isr_data->mask == mask) {
763 if (isr_data->isr == NULL && free_idx == -1)
770 isr_data = &isr_array[free_idx];
773 isr_data->mask = mask;
778 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
779 struct dsi_isr_data *isr_array, unsigned isr_array_size)
781 struct dsi_isr_data *isr_data;
784 for (i = 0; i < isr_array_size; i++) {
785 isr_data = &isr_array[i];
786 if (isr_data->isr != isr || isr_data->arg != arg ||
787 isr_data->mask != mask)
790 isr_data->isr = NULL;
791 isr_data->arg = NULL;
800 static int dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
805 spin_lock_irqsave(&dsi.irq_lock, flags);
807 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table,
808 ARRAY_SIZE(dsi.isr_tables.isr_table));
811 _omap_dsi_set_irqs();
813 spin_unlock_irqrestore(&dsi.irq_lock, flags);
818 static int dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
823 spin_lock_irqsave(&dsi.irq_lock, flags);
825 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table,
826 ARRAY_SIZE(dsi.isr_tables.isr_table));
829 _omap_dsi_set_irqs();
831 spin_unlock_irqrestore(&dsi.irq_lock, flags);
836 static int dsi_register_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
842 spin_lock_irqsave(&dsi.irq_lock, flags);
844 r = _dsi_register_isr(isr, arg, mask,
845 dsi.isr_tables.isr_table_vc[channel],
846 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
849 _omap_dsi_set_irqs_vc(channel);
851 spin_unlock_irqrestore(&dsi.irq_lock, flags);
856 static int dsi_unregister_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
862 spin_lock_irqsave(&dsi.irq_lock, flags);
864 r = _dsi_unregister_isr(isr, arg, mask,
865 dsi.isr_tables.isr_table_vc[channel],
866 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
869 _omap_dsi_set_irqs_vc(channel);
871 spin_unlock_irqrestore(&dsi.irq_lock, flags);
876 static int dsi_register_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
881 spin_lock_irqsave(&dsi.irq_lock, flags);
883 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
884 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
887 _omap_dsi_set_irqs_cio();
889 spin_unlock_irqrestore(&dsi.irq_lock, flags);
894 static int dsi_unregister_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
899 spin_lock_irqsave(&dsi.irq_lock, flags);
901 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
902 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
905 _omap_dsi_set_irqs_cio();
907 spin_unlock_irqrestore(&dsi.irq_lock, flags);
912 static u32 dsi_get_errors(void)
916 spin_lock_irqsave(&dsi.errors_lock, flags);
919 spin_unlock_irqrestore(&dsi.errors_lock, flags);
923 /* DSI func clock. this could also be dsi_pll_hsdiv_dsi_clk */
924 static inline void enable_clocks(bool enable)
927 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
929 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
932 /* source clock for DSI PLL. this could also be PCLKFREE */
933 static inline void dsi_enable_pll_clock(bool enable)
936 dss_clk_enable(DSS_CLK_SYSCK);
938 dss_clk_disable(DSS_CLK_SYSCK);
940 if (enable && dsi.pll_locked) {
941 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1)
942 DSSERR("cannot lock PLL when enabling clocks\n");
947 static void _dsi_print_reset_status(void)
954 /* A dummy read using the SCP interface to any DSIPHY register is
955 * required after DSIPHY reset to complete the reset of the DSI complex
957 l = dsi_read_reg(DSI_DSIPHY_CFG5);
959 printk(KERN_DEBUG "DSI resets: ");
961 l = dsi_read_reg(DSI_PLL_STATUS);
962 printk("PLL (%d) ", FLD_GET(l, 0, 0));
964 l = dsi_read_reg(DSI_COMPLEXIO_CFG1);
965 printk("CIO (%d) ", FLD_GET(l, 29, 29));
967 l = dsi_read_reg(DSI_DSIPHY_CFG5);
968 printk("PHY (%x, %d, %d, %d)\n",
975 #define _dsi_print_reset_status()
978 static inline int dsi_if_enable(bool enable)
980 DSSDBG("dsi_if_enable(%d)\n", enable);
982 enable = enable ? 1 : 0;
983 REG_FLD_MOD(DSI_CTRL, enable, 0, 0); /* IF_EN */
985 if (wait_for_bit_change(DSI_CTRL, 0, enable) != enable) {
986 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
993 unsigned long dsi_get_pll_hsdiv_dispc_rate(void)
995 return dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk;
998 static unsigned long dsi_get_pll_hsdiv_dsi_rate(void)
1000 return dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk;
1003 static unsigned long dsi_get_txbyteclkhs(void)
1005 return dsi.current_cinfo.clkin4ddr / 16;
1008 static unsigned long dsi_fclk_rate(void)
1012 if (dss_get_dsi_clk_source() == OMAP_DSS_CLK_SRC_FCK) {
1013 /* DSI FCLK source is DSS_CLK_FCK */
1014 r = dss_clk_get_rate(DSS_CLK_FCK);
1016 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1017 r = dsi_get_pll_hsdiv_dsi_rate();
1023 static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev)
1025 unsigned long dsi_fclk;
1026 unsigned lp_clk_div;
1027 unsigned long lp_clk;
1029 lp_clk_div = dssdev->clocks.dsi.lp_clk_div;
1031 if (lp_clk_div == 0 || lp_clk_div > dsi.lpdiv_max)
1034 dsi_fclk = dsi_fclk_rate();
1036 lp_clk = dsi_fclk / 2 / lp_clk_div;
1038 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1039 dsi.current_cinfo.lp_clk = lp_clk;
1040 dsi.current_cinfo.lp_clk_div = lp_clk_div;
1042 REG_FLD_MOD(DSI_CLK_CTRL, lp_clk_div, 12, 0); /* LP_CLK_DIVISOR */
1044 REG_FLD_MOD(DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0,
1045 21, 21); /* LP_RX_SYNCHRO_ENABLE */
1051 enum dsi_pll_power_state {
1052 DSI_PLL_POWER_OFF = 0x0,
1053 DSI_PLL_POWER_ON_HSCLK = 0x1,
1054 DSI_PLL_POWER_ON_ALL = 0x2,
1055 DSI_PLL_POWER_ON_DIV = 0x3,
1058 static int dsi_pll_power(enum dsi_pll_power_state state)
1062 /* DSI-PLL power command 0x3 is not working */
1063 if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
1064 state == DSI_PLL_POWER_ON_DIV)
1065 state = DSI_PLL_POWER_ON_ALL;
1067 REG_FLD_MOD(DSI_CLK_CTRL, state, 31, 30); /* PLL_PWR_CMD */
1069 /* PLL_PWR_STATUS */
1070 while (FLD_GET(dsi_read_reg(DSI_CLK_CTRL), 29, 28) != state) {
1072 DSSERR("Failed to set DSI PLL power mode to %d\n",
1082 /* calculate clock rates using dividers in cinfo */
1083 static int dsi_calc_clock_rates(struct omap_dss_device *dssdev,
1084 struct dsi_clock_info *cinfo)
1086 if (cinfo->regn == 0 || cinfo->regn > dsi.regn_max)
1089 if (cinfo->regm == 0 || cinfo->regm > dsi.regm_max)
1092 if (cinfo->regm_dispc > dsi.regm_dispc_max)
1095 if (cinfo->regm_dsi > dsi.regm_dsi_max)
1098 if (cinfo->use_sys_clk) {
1099 cinfo->clkin = dss_clk_get_rate(DSS_CLK_SYSCK);
1100 /* XXX it is unclear if highfreq should be used
1101 * with DSS_SYS_CLK source also */
1102 cinfo->highfreq = 0;
1104 cinfo->clkin = dispc_pclk_rate(dssdev->manager->id);
1106 if (cinfo->clkin < 32000000)
1107 cinfo->highfreq = 0;
1109 cinfo->highfreq = 1;
1112 cinfo->fint = cinfo->clkin / (cinfo->regn * (cinfo->highfreq ? 2 : 1));
1114 if (cinfo->fint > dsi.fint_max || cinfo->fint < dsi.fint_min)
1117 cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint;
1119 if (cinfo->clkin4ddr > 1800 * 1000 * 1000)
1122 if (cinfo->regm_dispc > 0)
1123 cinfo->dsi_pll_hsdiv_dispc_clk =
1124 cinfo->clkin4ddr / cinfo->regm_dispc;
1126 cinfo->dsi_pll_hsdiv_dispc_clk = 0;
1128 if (cinfo->regm_dsi > 0)
1129 cinfo->dsi_pll_hsdiv_dsi_clk =
1130 cinfo->clkin4ddr / cinfo->regm_dsi;
1132 cinfo->dsi_pll_hsdiv_dsi_clk = 0;
1137 int dsi_pll_calc_clock_div_pck(bool is_tft, unsigned long req_pck,
1138 struct dsi_clock_info *dsi_cinfo,
1139 struct dispc_clock_info *dispc_cinfo)
1141 struct dsi_clock_info cur, best;
1142 struct dispc_clock_info best_dispc;
1143 int min_fck_per_pck;
1145 unsigned long dss_sys_clk, max_dss_fck;
1147 dss_sys_clk = dss_clk_get_rate(DSS_CLK_SYSCK);
1149 max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
1151 if (req_pck == dsi.cache_req_pck &&
1152 dsi.cache_cinfo.clkin == dss_sys_clk) {
1153 DSSDBG("DSI clock info found from cache\n");
1154 *dsi_cinfo = dsi.cache_cinfo;
1155 dispc_find_clk_divs(is_tft, req_pck,
1156 dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo);
1160 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
1162 if (min_fck_per_pck &&
1163 req_pck * min_fck_per_pck > max_dss_fck) {
1164 DSSERR("Requested pixel clock not possible with the current "
1165 "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning "
1166 "the constraint off.\n");
1167 min_fck_per_pck = 0;
1170 DSSDBG("dsi_pll_calc\n");
1173 memset(&best, 0, sizeof(best));
1174 memset(&best_dispc, 0, sizeof(best_dispc));
1176 memset(&cur, 0, sizeof(cur));
1177 cur.clkin = dss_sys_clk;
1178 cur.use_sys_clk = 1;
1181 /* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */
1182 /* highfreq: 0.75MHz < Fint = clkin / (2*regn) < 2.1MHz */
1183 /* To reduce PLL lock time, keep Fint high (around 2 MHz) */
1184 for (cur.regn = 1; cur.regn < dsi.regn_max; ++cur.regn) {
1185 if (cur.highfreq == 0)
1186 cur.fint = cur.clkin / cur.regn;
1188 cur.fint = cur.clkin / (2 * cur.regn);
1190 if (cur.fint > dsi.fint_max || cur.fint < dsi.fint_min)
1193 /* DSIPHY(MHz) = (2 * regm / regn) * (clkin / (highfreq + 1)) */
1194 for (cur.regm = 1; cur.regm < dsi.regm_max; ++cur.regm) {
1197 a = 2 * cur.regm * (cur.clkin/1000);
1198 b = cur.regn * (cur.highfreq + 1);
1199 cur.clkin4ddr = a / b * 1000;
1201 if (cur.clkin4ddr > 1800 * 1000 * 1000)
1204 /* dsi_pll_hsdiv_dispc_clk(MHz) =
1205 * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */
1206 for (cur.regm_dispc = 1; cur.regm_dispc < dsi.regm_dispc_max;
1208 struct dispc_clock_info cur_dispc;
1209 cur.dsi_pll_hsdiv_dispc_clk =
1210 cur.clkin4ddr / cur.regm_dispc;
1212 /* this will narrow down the search a bit,
1213 * but still give pixclocks below what was
1215 if (cur.dsi_pll_hsdiv_dispc_clk < req_pck)
1218 if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck)
1221 if (min_fck_per_pck &&
1222 cur.dsi_pll_hsdiv_dispc_clk <
1223 req_pck * min_fck_per_pck)
1228 dispc_find_clk_divs(is_tft, req_pck,
1229 cur.dsi_pll_hsdiv_dispc_clk,
1232 if (abs(cur_dispc.pck - req_pck) <
1233 abs(best_dispc.pck - req_pck)) {
1235 best_dispc = cur_dispc;
1237 if (cur_dispc.pck == req_pck)
1245 if (min_fck_per_pck) {
1246 DSSERR("Could not find suitable clock settings.\n"
1247 "Turning FCK/PCK constraint off and"
1249 min_fck_per_pck = 0;
1253 DSSERR("Could not find suitable clock settings.\n");
1258 /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */
1260 best.dsi_pll_hsdiv_dsi_clk = 0;
1265 *dispc_cinfo = best_dispc;
1267 dsi.cache_req_pck = req_pck;
1268 dsi.cache_clk_freq = 0;
1269 dsi.cache_cinfo = best;
1274 int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo)
1279 u8 regn_start, regn_end, regm_start, regm_end;
1280 u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end;
1284 dsi.current_cinfo.use_sys_clk = cinfo->use_sys_clk;
1285 dsi.current_cinfo.highfreq = cinfo->highfreq;
1287 dsi.current_cinfo.fint = cinfo->fint;
1288 dsi.current_cinfo.clkin4ddr = cinfo->clkin4ddr;
1289 dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk =
1290 cinfo->dsi_pll_hsdiv_dispc_clk;
1291 dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk =
1292 cinfo->dsi_pll_hsdiv_dsi_clk;
1294 dsi.current_cinfo.regn = cinfo->regn;
1295 dsi.current_cinfo.regm = cinfo->regm;
1296 dsi.current_cinfo.regm_dispc = cinfo->regm_dispc;
1297 dsi.current_cinfo.regm_dsi = cinfo->regm_dsi;
1299 DSSDBG("DSI Fint %ld\n", cinfo->fint);
1301 DSSDBG("clkin (%s) rate %ld, highfreq %d\n",
1302 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree",
1306 /* DSIPHY == CLKIN4DDR */
1307 DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu / %d = %lu\n",
1311 cinfo->highfreq + 1,
1314 DSSDBG("Data rate on 1 DSI lane %ld Mbps\n",
1315 cinfo->clkin4ddr / 1000 / 1000 / 2);
1317 DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4);
1319 DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc,
1320 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1321 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1322 cinfo->dsi_pll_hsdiv_dispc_clk);
1323 DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi,
1324 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1325 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1326 cinfo->dsi_pll_hsdiv_dsi_clk);
1328 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end);
1329 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end);
1330 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start,
1332 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start,
1335 REG_FLD_MOD(DSI_PLL_CONTROL, 0, 0, 0); /* DSI_PLL_AUTOMODE = manual */
1337 l = dsi_read_reg(DSI_PLL_CONFIGURATION1);
1338 l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */
1340 l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end);
1342 l = FLD_MOD(l, cinfo->regm, regm_start, regm_end);
1344 l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0,
1345 regm_dispc_start, regm_dispc_end);
1346 /* DSIPROTO_CLOCK_DIV */
1347 l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0,
1348 regm_dsi_start, regm_dsi_end);
1349 dsi_write_reg(DSI_PLL_CONFIGURATION1, l);
1351 BUG_ON(cinfo->fint < dsi.fint_min || cinfo->fint > dsi.fint_max);
1353 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) {
1354 f = cinfo->fint < 1000000 ? 0x3 :
1355 cinfo->fint < 1250000 ? 0x4 :
1356 cinfo->fint < 1500000 ? 0x5 :
1357 cinfo->fint < 1750000 ? 0x6 :
1361 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1363 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL))
1364 l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */
1365 l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1,
1366 11, 11); /* DSI_PLL_CLKSEL */
1367 l = FLD_MOD(l, cinfo->highfreq,
1368 12, 12); /* DSI_PLL_HIGHFREQ */
1369 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1370 l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */
1371 l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */
1372 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1374 REG_FLD_MOD(DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */
1376 if (wait_for_bit_change(DSI_PLL_GO, 0, 0) != 0) {
1377 DSSERR("dsi pll go bit not going down.\n");
1382 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1) {
1383 DSSERR("cannot lock PLL\n");
1390 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1391 l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */
1392 l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */
1393 l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */
1394 l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */
1395 l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */
1396 l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */
1397 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1398 l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */
1399 l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */
1400 l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */
1401 l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */
1402 l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */
1403 l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */
1404 l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */
1405 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1407 DSSDBG("PLL config done\n");
1412 int dsi_pll_init(struct omap_dss_device *dssdev, bool enable_hsclk,
1416 enum dsi_pll_power_state pwstate;
1418 DSSDBG("PLL init\n");
1420 if (dsi.vdds_dsi_reg == NULL) {
1421 struct regulator *vdds_dsi;
1423 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
1425 if (IS_ERR(vdds_dsi)) {
1426 DSSERR("can't get VDDS_DSI regulator\n");
1427 return PTR_ERR(vdds_dsi);
1430 dsi.vdds_dsi_reg = vdds_dsi;
1434 dsi_enable_pll_clock(1);
1436 r = regulator_enable(dsi.vdds_dsi_reg);
1440 /* XXX PLL does not come out of reset without this... */
1441 dispc_pck_free_enable(1);
1443 if (wait_for_bit_change(DSI_PLL_STATUS, 0, 1) != 1) {
1444 DSSERR("PLL not coming out of reset.\n");
1446 dispc_pck_free_enable(0);
1450 /* XXX ... but if left on, we get problems when planes do not
1451 * fill the whole display. No idea about this */
1452 dispc_pck_free_enable(0);
1454 if (enable_hsclk && enable_hsdiv)
1455 pwstate = DSI_PLL_POWER_ON_ALL;
1456 else if (enable_hsclk)
1457 pwstate = DSI_PLL_POWER_ON_HSCLK;
1458 else if (enable_hsdiv)
1459 pwstate = DSI_PLL_POWER_ON_DIV;
1461 pwstate = DSI_PLL_POWER_OFF;
1463 r = dsi_pll_power(pwstate);
1468 DSSDBG("PLL init done\n");
1472 regulator_disable(dsi.vdds_dsi_reg);
1475 dsi_enable_pll_clock(0);
1479 void dsi_pll_uninit(void)
1482 dsi_enable_pll_clock(0);
1485 dsi_pll_power(DSI_PLL_POWER_OFF);
1486 regulator_disable(dsi.vdds_dsi_reg);
1487 DSSDBG("PLL uninit done\n");
1490 void dsi_dump_clocks(struct seq_file *s)
1492 struct dsi_clock_info *cinfo = &dsi.current_cinfo;
1493 enum omap_dss_clk_source dispc_clk_src, dsi_clk_src;
1495 dispc_clk_src = dss_get_dispc_clk_source();
1496 dsi_clk_src = dss_get_dsi_clk_source();
1500 seq_printf(s, "- DSI PLL -\n");
1502 seq_printf(s, "dsi pll source = %s\n",
1503 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree");
1505 seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn);
1507 seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n",
1508 cinfo->clkin4ddr, cinfo->regm);
1510 seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n",
1511 dss_get_generic_clk_source_name(dispc_clk_src),
1512 dss_feat_get_clk_source_name(dispc_clk_src),
1513 cinfo->dsi_pll_hsdiv_dispc_clk,
1515 dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1518 seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n",
1519 dss_get_generic_clk_source_name(dsi_clk_src),
1520 dss_feat_get_clk_source_name(dsi_clk_src),
1521 cinfo->dsi_pll_hsdiv_dsi_clk,
1523 dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1526 seq_printf(s, "- DSI -\n");
1528 seq_printf(s, "dsi fclk source = %s (%s)\n",
1529 dss_get_generic_clk_source_name(dsi_clk_src),
1530 dss_feat_get_clk_source_name(dsi_clk_src));
1532 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate());
1534 seq_printf(s, "DDR_CLK\t\t%lu\n",
1535 cinfo->clkin4ddr / 4);
1537 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs());
1539 seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk);
1541 seq_printf(s, "VP_CLK\t\t%lu\n"
1543 dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD),
1544 dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD));
1549 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1550 void dsi_dump_irqs(struct seq_file *s)
1552 unsigned long flags;
1553 struct dsi_irq_stats stats;
1555 spin_lock_irqsave(&dsi.irq_stats_lock, flags);
1557 stats = dsi.irq_stats;
1558 memset(&dsi.irq_stats, 0, sizeof(dsi.irq_stats));
1559 dsi.irq_stats.last_reset = jiffies;
1561 spin_unlock_irqrestore(&dsi.irq_stats_lock, flags);
1563 seq_printf(s, "period %u ms\n",
1564 jiffies_to_msecs(jiffies - stats.last_reset));
1566 seq_printf(s, "irqs %d\n", stats.irq_count);
1568 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1570 seq_printf(s, "-- DSI interrupts --\n");
1586 PIS(LDO_POWER_GOOD);
1591 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1592 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1593 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1594 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1595 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1597 seq_printf(s, "-- VC interrupts --\n");
1606 PIS(PP_BUSY_CHANGE);
1610 seq_printf(s, "%-20s %10d\n", #x, \
1611 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1613 seq_printf(s, "-- CIO interrupts --\n");
1626 PIS(ERRCONTENTIONLP0_1);
1627 PIS(ERRCONTENTIONLP1_1);
1628 PIS(ERRCONTENTIONLP0_2);
1629 PIS(ERRCONTENTIONLP1_2);
1630 PIS(ERRCONTENTIONLP0_3);
1631 PIS(ERRCONTENTIONLP1_3);
1632 PIS(ULPSACTIVENOT_ALL0);
1633 PIS(ULPSACTIVENOT_ALL1);
1638 void dsi_dump_regs(struct seq_file *s)
1640 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(r))
1642 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
1644 DUMPREG(DSI_REVISION);
1645 DUMPREG(DSI_SYSCONFIG);
1646 DUMPREG(DSI_SYSSTATUS);
1647 DUMPREG(DSI_IRQSTATUS);
1648 DUMPREG(DSI_IRQENABLE);
1650 DUMPREG(DSI_COMPLEXIO_CFG1);
1651 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1652 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1653 DUMPREG(DSI_CLK_CTRL);
1654 DUMPREG(DSI_TIMING1);
1655 DUMPREG(DSI_TIMING2);
1656 DUMPREG(DSI_VM_TIMING1);
1657 DUMPREG(DSI_VM_TIMING2);
1658 DUMPREG(DSI_VM_TIMING3);
1659 DUMPREG(DSI_CLK_TIMING);
1660 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1661 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1662 DUMPREG(DSI_COMPLEXIO_CFG2);
1663 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1664 DUMPREG(DSI_VM_TIMING4);
1665 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1666 DUMPREG(DSI_VM_TIMING5);
1667 DUMPREG(DSI_VM_TIMING6);
1668 DUMPREG(DSI_VM_TIMING7);
1669 DUMPREG(DSI_STOPCLK_TIMING);
1671 DUMPREG(DSI_VC_CTRL(0));
1672 DUMPREG(DSI_VC_TE(0));
1673 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1674 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1675 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1676 DUMPREG(DSI_VC_IRQSTATUS(0));
1677 DUMPREG(DSI_VC_IRQENABLE(0));
1679 DUMPREG(DSI_VC_CTRL(1));
1680 DUMPREG(DSI_VC_TE(1));
1681 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1682 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1683 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1684 DUMPREG(DSI_VC_IRQSTATUS(1));
1685 DUMPREG(DSI_VC_IRQENABLE(1));
1687 DUMPREG(DSI_VC_CTRL(2));
1688 DUMPREG(DSI_VC_TE(2));
1689 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1690 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1691 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1692 DUMPREG(DSI_VC_IRQSTATUS(2));
1693 DUMPREG(DSI_VC_IRQENABLE(2));
1695 DUMPREG(DSI_VC_CTRL(3));
1696 DUMPREG(DSI_VC_TE(3));
1697 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1698 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1699 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1700 DUMPREG(DSI_VC_IRQSTATUS(3));
1701 DUMPREG(DSI_VC_IRQENABLE(3));
1703 DUMPREG(DSI_DSIPHY_CFG0);
1704 DUMPREG(DSI_DSIPHY_CFG1);
1705 DUMPREG(DSI_DSIPHY_CFG2);
1706 DUMPREG(DSI_DSIPHY_CFG5);
1708 DUMPREG(DSI_PLL_CONTROL);
1709 DUMPREG(DSI_PLL_STATUS);
1710 DUMPREG(DSI_PLL_GO);
1711 DUMPREG(DSI_PLL_CONFIGURATION1);
1712 DUMPREG(DSI_PLL_CONFIGURATION2);
1714 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
1718 enum dsi_complexio_power_state {
1719 DSI_COMPLEXIO_POWER_OFF = 0x0,
1720 DSI_COMPLEXIO_POWER_ON = 0x1,
1721 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1724 static int dsi_complexio_power(enum dsi_complexio_power_state state)
1729 REG_FLD_MOD(DSI_COMPLEXIO_CFG1, state, 28, 27);
1732 while (FLD_GET(dsi_read_reg(DSI_COMPLEXIO_CFG1), 26, 25) != state) {
1734 DSSERR("failed to set complexio power state to "
1744 static void dsi_complexio_config(struct omap_dss_device *dssdev)
1748 int clk_lane = dssdev->phy.dsi.clk_lane;
1749 int data1_lane = dssdev->phy.dsi.data1_lane;
1750 int data2_lane = dssdev->phy.dsi.data2_lane;
1751 int clk_pol = dssdev->phy.dsi.clk_pol;
1752 int data1_pol = dssdev->phy.dsi.data1_pol;
1753 int data2_pol = dssdev->phy.dsi.data2_pol;
1755 r = dsi_read_reg(DSI_COMPLEXIO_CFG1);
1756 r = FLD_MOD(r, clk_lane, 2, 0);
1757 r = FLD_MOD(r, clk_pol, 3, 3);
1758 r = FLD_MOD(r, data1_lane, 6, 4);
1759 r = FLD_MOD(r, data1_pol, 7, 7);
1760 r = FLD_MOD(r, data2_lane, 10, 8);
1761 r = FLD_MOD(r, data2_pol, 11, 11);
1762 dsi_write_reg(DSI_COMPLEXIO_CFG1, r);
1764 /* The configuration of the DSI complex I/O (number of data lanes,
1765 position, differential order) should not be changed while
1766 DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. In order for
1767 the hardware to take into account a new configuration of the complex
1768 I/O (done in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to
1769 follow this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1,
1770 then reset the DSS.DSI_CTRL[0] IF_EN to 0, then set
1771 DSS.DSI_CLK_CTRL[20] LP_CLK_ENABLE to 1 and finally set again the
1772 DSS.DSI_CTRL[0] IF_EN bit to 1. If the sequence is not followed, the
1773 DSI complex I/O configuration is unknown. */
1776 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1777 REG_FLD_MOD(DSI_CTRL, 0, 0, 0);
1778 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20);
1779 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1783 static inline unsigned ns2ddr(unsigned ns)
1785 /* convert time in ns to ddr ticks, rounding up */
1786 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1787 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1790 static inline unsigned ddr2ns(unsigned ddr)
1792 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1793 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1796 static void dsi_complexio_timings(void)
1799 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1800 u32 tlpx_half, tclk_trail, tclk_zero;
1803 /* calculate timings */
1805 /* 1 * DDR_CLK = 2 * UI */
1807 /* min 40ns + 4*UI max 85ns + 6*UI */
1808 ths_prepare = ns2ddr(70) + 2;
1810 /* min 145ns + 10*UI */
1811 ths_prepare_ths_zero = ns2ddr(175) + 2;
1813 /* min max(8*UI, 60ns+4*UI) */
1814 ths_trail = ns2ddr(60) + 5;
1817 ths_exit = ns2ddr(145);
1820 tlpx_half = ns2ddr(25);
1823 tclk_trail = ns2ddr(60) + 2;
1825 /* min 38ns, max 95ns */
1826 tclk_prepare = ns2ddr(65);
1828 /* min tclk-prepare + tclk-zero = 300ns */
1829 tclk_zero = ns2ddr(260);
1831 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1832 ths_prepare, ddr2ns(ths_prepare),
1833 ths_prepare_ths_zero, ddr2ns(ths_prepare_ths_zero));
1834 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1835 ths_trail, ddr2ns(ths_trail),
1836 ths_exit, ddr2ns(ths_exit));
1838 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1839 "tclk_zero %u (%uns)\n",
1840 tlpx_half, ddr2ns(tlpx_half),
1841 tclk_trail, ddr2ns(tclk_trail),
1842 tclk_zero, ddr2ns(tclk_zero));
1843 DSSDBG("tclk_prepare %u (%uns)\n",
1844 tclk_prepare, ddr2ns(tclk_prepare));
1846 /* program timings */
1848 r = dsi_read_reg(DSI_DSIPHY_CFG0);
1849 r = FLD_MOD(r, ths_prepare, 31, 24);
1850 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1851 r = FLD_MOD(r, ths_trail, 15, 8);
1852 r = FLD_MOD(r, ths_exit, 7, 0);
1853 dsi_write_reg(DSI_DSIPHY_CFG0, r);
1855 r = dsi_read_reg(DSI_DSIPHY_CFG1);
1856 r = FLD_MOD(r, tlpx_half, 22, 16);
1857 r = FLD_MOD(r, tclk_trail, 15, 8);
1858 r = FLD_MOD(r, tclk_zero, 7, 0);
1859 dsi_write_reg(DSI_DSIPHY_CFG1, r);
1861 r = dsi_read_reg(DSI_DSIPHY_CFG2);
1862 r = FLD_MOD(r, tclk_prepare, 7, 0);
1863 dsi_write_reg(DSI_DSIPHY_CFG2, r);
1867 static int dsi_complexio_init(struct omap_dss_device *dssdev)
1871 DSSDBG("dsi_complexio_init\n");
1873 /* A dummy read using the SCP interface to any DSIPHY register is
1874 * required after DSIPHY reset to complete the reset of the DSI complex
1876 dsi_read_reg(DSI_DSIPHY_CFG5);
1878 if (wait_for_bit_change(DSI_DSIPHY_CFG5, 30, 1) != 1) {
1879 DSSERR("ComplexIO PHY not coming out of reset.\n");
1884 dsi_complexio_config(dssdev);
1886 r = dsi_complexio_power(DSI_COMPLEXIO_POWER_ON);
1891 if (wait_for_bit_change(DSI_COMPLEXIO_CFG1, 29, 1) != 1) {
1892 DSSERR("ComplexIO not coming out of reset.\n");
1897 if (dss_has_feature(FEAT_DSI_LDO_STATUS)) {
1898 if (wait_for_bit_change(DSI_COMPLEXIO_CFG1, 21, 1) != 1) {
1899 DSSERR("ComplexIO LDO power down.\n");
1905 dsi_complexio_timings();
1908 The configuration of the DSI complex I/O (number of data lanes,
1909 position, differential order) should not be changed while
1910 DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. For the
1911 hardware to recognize a new configuration of the complex I/O (done
1912 in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to follow
1913 this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1, next
1914 reset the DSS.DSI_CTRL[0] IF_EN to 0, then set DSS.DSI_CLK_CTRL[20]
1915 LP_CLK_ENABLE to 1, and finally, set again the DSS.DSI_CTRL[0] IF_EN
1916 bit to 1. If the sequence is not followed, the DSi complex I/O
1917 configuration is undetermined.
1921 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
1925 DSSDBG("CIO init done\n");
1930 static void dsi_complexio_uninit(void)
1932 dsi_complexio_power(DSI_COMPLEXIO_POWER_OFF);
1935 static int _dsi_wait_reset(void)
1939 while (REG_GET(DSI_SYSSTATUS, 0, 0) == 0) {
1941 DSSERR("soft reset failed\n");
1950 static int _dsi_reset(void)
1953 REG_FLD_MOD(DSI_SYSCONFIG, 1, 1, 1);
1954 return _dsi_wait_reset();
1957 static void dsi_config_tx_fifo(enum fifo_size size1, enum fifo_size size2,
1958 enum fifo_size size3, enum fifo_size size4)
1964 dsi.vc[0].fifo_size = size1;
1965 dsi.vc[1].fifo_size = size2;
1966 dsi.vc[2].fifo_size = size3;
1967 dsi.vc[3].fifo_size = size4;
1969 for (i = 0; i < 4; i++) {
1971 int size = dsi.vc[i].fifo_size;
1973 if (add + size > 4) {
1974 DSSERR("Illegal FIFO configuration\n");
1978 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
1980 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
1984 dsi_write_reg(DSI_TX_FIFO_VC_SIZE, r);
1987 static void dsi_config_rx_fifo(enum fifo_size size1, enum fifo_size size2,
1988 enum fifo_size size3, enum fifo_size size4)
1994 dsi.vc[0].fifo_size = size1;
1995 dsi.vc[1].fifo_size = size2;
1996 dsi.vc[2].fifo_size = size3;
1997 dsi.vc[3].fifo_size = size4;
1999 for (i = 0; i < 4; i++) {
2001 int size = dsi.vc[i].fifo_size;
2003 if (add + size > 4) {
2004 DSSERR("Illegal FIFO configuration\n");
2008 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2010 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2014 dsi_write_reg(DSI_RX_FIFO_VC_SIZE, r);
2017 static int dsi_force_tx_stop_mode_io(void)
2021 r = dsi_read_reg(DSI_TIMING1);
2022 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2023 dsi_write_reg(DSI_TIMING1, r);
2025 if (wait_for_bit_change(DSI_TIMING1, 15, 0) != 0) {
2026 DSSERR("TX_STOP bit not going down\n");
2033 static bool dsi_vc_is_enabled(int channel)
2035 return REG_GET(DSI_VC_CTRL(channel), 0, 0);
2038 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2040 const int channel = dsi.update_channel;
2041 u8 bit = dsi.te_enabled ? 30 : 31;
2043 if (REG_GET(DSI_VC_TE(channel), bit, bit) == 0)
2044 complete((struct completion *)data);
2047 static int dsi_sync_vc_vp(int channel)
2052 DECLARE_COMPLETION_ONSTACK(completion);
2054 bit = dsi.te_enabled ? 30 : 31;
2056 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_vp,
2057 &completion, DSI_VC_IRQ_PACKET_SENT);
2061 /* Wait for completion only if TE_EN/TE_START is still set */
2062 if (REG_GET(DSI_VC_TE(channel), bit, bit)) {
2063 if (wait_for_completion_timeout(&completion,
2064 msecs_to_jiffies(10)) == 0) {
2065 DSSERR("Failed to complete previous frame transfer\n");
2071 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp,
2072 &completion, DSI_VC_IRQ_PACKET_SENT);
2076 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp, &completion,
2077 DSI_VC_IRQ_PACKET_SENT);
2082 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2084 const int channel = dsi.update_channel;
2086 if (REG_GET(DSI_VC_CTRL(channel), 5, 5) == 0)
2087 complete((struct completion *)data);
2090 static int dsi_sync_vc_l4(int channel)
2094 DECLARE_COMPLETION_ONSTACK(completion);
2096 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_l4,
2097 &completion, DSI_VC_IRQ_PACKET_SENT);
2101 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2102 if (REG_GET(DSI_VC_CTRL(channel), 5, 5)) {
2103 if (wait_for_completion_timeout(&completion,
2104 msecs_to_jiffies(10)) == 0) {
2105 DSSERR("Failed to complete previous l4 transfer\n");
2111 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2112 &completion, DSI_VC_IRQ_PACKET_SENT);
2116 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2117 &completion, DSI_VC_IRQ_PACKET_SENT);
2122 static int dsi_sync_vc(int channel)
2124 WARN_ON(!dsi_bus_is_locked());
2126 WARN_ON(in_interrupt());
2128 if (!dsi_vc_is_enabled(channel))
2131 switch (dsi.vc[channel].mode) {
2132 case DSI_VC_MODE_VP:
2133 return dsi_sync_vc_vp(channel);
2134 case DSI_VC_MODE_L4:
2135 return dsi_sync_vc_l4(channel);
2141 static int dsi_vc_enable(int channel, bool enable)
2143 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2146 enable = enable ? 1 : 0;
2148 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 0, 0);
2150 if (wait_for_bit_change(DSI_VC_CTRL(channel), 0, enable) != enable) {
2151 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2158 static void dsi_vc_initial_config(int channel)
2162 DSSDBGF("%d", channel);
2164 r = dsi_read_reg(DSI_VC_CTRL(channel));
2166 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2167 DSSERR("VC(%d) busy when trying to configure it!\n",
2170 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2171 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2172 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2173 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2174 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2175 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2176 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2177 if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH))
2178 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2180 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2181 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2183 dsi_write_reg(DSI_VC_CTRL(channel), r);
2186 static int dsi_vc_config_l4(int channel)
2188 if (dsi.vc[channel].mode == DSI_VC_MODE_L4)
2191 DSSDBGF("%d", channel);
2193 dsi_sync_vc(channel);
2195 dsi_vc_enable(channel, 0);
2198 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2199 DSSERR("vc(%d) busy when trying to config for L4\n", channel);
2203 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 1, 1); /* SOURCE, 0 = L4 */
2205 /* DCS_CMD_ENABLE */
2206 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2207 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 30, 30);
2209 dsi_vc_enable(channel, 1);
2211 dsi.vc[channel].mode = DSI_VC_MODE_L4;
2216 static int dsi_vc_config_vp(int channel)
2218 if (dsi.vc[channel].mode == DSI_VC_MODE_VP)
2221 DSSDBGF("%d", channel);
2223 dsi_sync_vc(channel);
2225 dsi_vc_enable(channel, 0);
2228 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2229 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2233 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 1, 1); /* SOURCE, 1 = video port */
2235 /* DCS_CMD_ENABLE */
2236 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2237 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 30, 30);
2239 dsi_vc_enable(channel, 1);
2241 dsi.vc[channel].mode = DSI_VC_MODE_VP;
2247 void omapdss_dsi_vc_enable_hs(int channel, bool enable)
2249 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2251 WARN_ON(!dsi_bus_is_locked());
2253 dsi_vc_enable(channel, 0);
2256 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 9, 9);
2258 dsi_vc_enable(channel, 1);
2261 dsi_force_tx_stop_mode_io();
2263 EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs);
2265 static void dsi_vc_flush_long_data(int channel)
2267 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2269 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2270 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2274 (val >> 24) & 0xff);
2278 static void dsi_show_rx_ack_with_err(u16 err)
2280 DSSERR("\tACK with ERROR (%#x):\n", err);
2282 DSSERR("\t\tSoT Error\n");
2284 DSSERR("\t\tSoT Sync Error\n");
2286 DSSERR("\t\tEoT Sync Error\n");
2288 DSSERR("\t\tEscape Mode Entry Command Error\n");
2290 DSSERR("\t\tLP Transmit Sync Error\n");
2292 DSSERR("\t\tHS Receive Timeout Error\n");
2294 DSSERR("\t\tFalse Control Error\n");
2296 DSSERR("\t\t(reserved7)\n");
2298 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2300 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2301 if (err & (1 << 10))
2302 DSSERR("\t\tChecksum Error\n");
2303 if (err & (1 << 11))
2304 DSSERR("\t\tData type not recognized\n");
2305 if (err & (1 << 12))
2306 DSSERR("\t\tInvalid VC ID\n");
2307 if (err & (1 << 13))
2308 DSSERR("\t\tInvalid Transmission Length\n");
2309 if (err & (1 << 14))
2310 DSSERR("\t\t(reserved14)\n");
2311 if (err & (1 << 15))
2312 DSSERR("\t\tDSI Protocol Violation\n");
2315 static u16 dsi_vc_flush_receive_data(int channel)
2317 /* RX_FIFO_NOT_EMPTY */
2318 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2321 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2322 DSSERR("\trawval %#08x\n", val);
2323 dt = FLD_GET(val, 5, 0);
2324 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2325 u16 err = FLD_GET(val, 23, 8);
2326 dsi_show_rx_ack_with_err(err);
2327 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2328 DSSERR("\tDCS short response, 1 byte: %#x\n",
2329 FLD_GET(val, 23, 8));
2330 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2331 DSSERR("\tDCS short response, 2 byte: %#x\n",
2332 FLD_GET(val, 23, 8));
2333 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2334 DSSERR("\tDCS long response, len %d\n",
2335 FLD_GET(val, 23, 8));
2336 dsi_vc_flush_long_data(channel);
2338 DSSERR("\tunknown datatype 0x%02x\n", dt);
2344 static int dsi_vc_send_bta(int channel)
2346 if (dsi.debug_write || dsi.debug_read)
2347 DSSDBG("dsi_vc_send_bta %d\n", channel);
2349 WARN_ON(!dsi_bus_is_locked());
2351 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2352 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2353 dsi_vc_flush_receive_data(channel);
2356 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2361 int dsi_vc_send_bta_sync(int channel)
2363 DECLARE_COMPLETION_ONSTACK(completion);
2367 r = dsi_register_isr_vc(channel, dsi_completion_handler,
2368 &completion, DSI_VC_IRQ_BTA);
2372 r = dsi_register_isr(dsi_completion_handler, &completion,
2373 DSI_IRQ_ERROR_MASK);
2377 r = dsi_vc_send_bta(channel);
2381 if (wait_for_completion_timeout(&completion,
2382 msecs_to_jiffies(500)) == 0) {
2383 DSSERR("Failed to receive BTA\n");
2388 err = dsi_get_errors();
2390 DSSERR("Error while sending BTA: %x\n", err);
2395 dsi_unregister_isr(dsi_completion_handler, &completion,
2396 DSI_IRQ_ERROR_MASK);
2398 dsi_unregister_isr_vc(channel, dsi_completion_handler,
2399 &completion, DSI_VC_IRQ_BTA);
2403 EXPORT_SYMBOL(dsi_vc_send_bta_sync);
2405 static inline void dsi_vc_write_long_header(int channel, u8 data_type,
2411 WARN_ON(!dsi_bus_is_locked());
2413 data_id = data_type | dsi.vc[channel].vc_id << 6;
2415 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2416 FLD_VAL(ecc, 31, 24);
2418 dsi_write_reg(DSI_VC_LONG_PACKET_HEADER(channel), val);
2421 static inline void dsi_vc_write_long_payload(int channel,
2422 u8 b1, u8 b2, u8 b3, u8 b4)
2426 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2428 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2429 b1, b2, b3, b4, val); */
2431 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2434 static int dsi_vc_send_long(int channel, u8 data_type, u8 *data, u16 len,
2443 if (dsi.debug_write)
2444 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2447 if (dsi.vc[channel].fifo_size * 32 * 4 < len + 4) {
2448 DSSERR("unable to send long packet: packet too long.\n");
2452 dsi_vc_config_l4(channel);
2454 dsi_vc_write_long_header(channel, data_type, len, ecc);
2457 for (i = 0; i < len >> 2; i++) {
2458 if (dsi.debug_write)
2459 DSSDBG("\tsending full packet %d\n", i);
2466 dsi_vc_write_long_payload(channel, b1, b2, b3, b4);
2471 b1 = 0; b2 = 0; b3 = 0;
2473 if (dsi.debug_write)
2474 DSSDBG("\tsending remainder bytes %d\n", i);
2491 dsi_vc_write_long_payload(channel, b1, b2, b3, 0);
2497 static int dsi_vc_send_short(int channel, u8 data_type, u16 data, u8 ecc)
2502 WARN_ON(!dsi_bus_is_locked());
2504 if (dsi.debug_write)
2505 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2507 data_type, data & 0xff, (data >> 8) & 0xff);
2509 dsi_vc_config_l4(channel);
2511 if (FLD_GET(dsi_read_reg(DSI_VC_CTRL(channel)), 16, 16)) {
2512 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2516 data_id = data_type | dsi.vc[channel].vc_id << 6;
2518 r = (data_id << 0) | (data << 8) | (ecc << 24);
2520 dsi_write_reg(DSI_VC_SHORT_PACKET_HEADER(channel), r);
2525 int dsi_vc_send_null(int channel)
2527 u8 nullpkg[] = {0, 0, 0, 0};
2528 return dsi_vc_send_long(channel, DSI_DT_NULL_PACKET, nullpkg, 4, 0);
2530 EXPORT_SYMBOL(dsi_vc_send_null);
2532 int dsi_vc_dcs_write_nosync(int channel, u8 *data, int len)
2539 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_0,
2541 } else if (len == 2) {
2542 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_1,
2543 data[0] | (data[1] << 8), 0);
2545 /* 0x39 = DCS Long Write */
2546 r = dsi_vc_send_long(channel, DSI_DT_DCS_LONG_WRITE,
2552 EXPORT_SYMBOL(dsi_vc_dcs_write_nosync);
2554 int dsi_vc_dcs_write(int channel, u8 *data, int len)
2558 r = dsi_vc_dcs_write_nosync(channel, data, len);
2562 r = dsi_vc_send_bta_sync(channel);
2566 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2567 DSSERR("rx fifo not empty after write, dumping data:\n");
2568 dsi_vc_flush_receive_data(channel);
2575 DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n",
2576 channel, data[0], len);
2579 EXPORT_SYMBOL(dsi_vc_dcs_write);
2581 int dsi_vc_dcs_write_0(int channel, u8 dcs_cmd)
2583 return dsi_vc_dcs_write(channel, &dcs_cmd, 1);
2585 EXPORT_SYMBOL(dsi_vc_dcs_write_0);
2587 int dsi_vc_dcs_write_1(int channel, u8 dcs_cmd, u8 param)
2592 return dsi_vc_dcs_write(channel, buf, 2);
2594 EXPORT_SYMBOL(dsi_vc_dcs_write_1);
2596 int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen)
2603 DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd);
2605 r = dsi_vc_send_short(channel, DSI_DT_DCS_READ, dcs_cmd, 0);
2609 r = dsi_vc_send_bta_sync(channel);
2613 /* RX_FIFO_NOT_EMPTY */
2614 if (REG_GET(DSI_VC_CTRL(channel), 20, 20) == 0) {
2615 DSSERR("RX fifo empty when trying to read.\n");
2620 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2622 DSSDBG("\theader: %08x\n", val);
2623 dt = FLD_GET(val, 5, 0);
2624 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2625 u16 err = FLD_GET(val, 23, 8);
2626 dsi_show_rx_ack_with_err(err);
2630 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2631 u8 data = FLD_GET(val, 15, 8);
2633 DSSDBG("\tDCS short response, 1 byte: %02x\n", data);
2643 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2644 u16 data = FLD_GET(val, 23, 8);
2646 DSSDBG("\tDCS short response, 2 byte: %04x\n", data);
2653 buf[0] = data & 0xff;
2654 buf[1] = (data >> 8) & 0xff;
2657 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2659 int len = FLD_GET(val, 23, 8);
2661 DSSDBG("\tDCS long response, len %d\n", len);
2668 /* two byte checksum ends the packet, not included in len */
2669 for (w = 0; w < len + 2;) {
2671 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2673 DSSDBG("\t\t%02x %02x %02x %02x\n",
2677 (val >> 24) & 0xff);
2679 for (b = 0; b < 4; ++b) {
2681 buf[w] = (val >> (b * 8)) & 0xff;
2682 /* we discard the 2 byte checksum */
2689 DSSERR("\tunknown datatype 0x%02x\n", dt);
2696 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n",
2701 EXPORT_SYMBOL(dsi_vc_dcs_read);
2703 int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data)
2707 r = dsi_vc_dcs_read(channel, dcs_cmd, data, 1);
2717 EXPORT_SYMBOL(dsi_vc_dcs_read_1);
2719 int dsi_vc_dcs_read_2(int channel, u8 dcs_cmd, u8 *data1, u8 *data2)
2724 r = dsi_vc_dcs_read(channel, dcs_cmd, buf, 2);
2737 EXPORT_SYMBOL(dsi_vc_dcs_read_2);
2739 int dsi_vc_set_max_rx_packet_size(int channel, u16 len)
2741 return dsi_vc_send_short(channel, DSI_DT_SET_MAX_RET_PKG_SIZE,
2744 EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size);
2746 static void dsi_set_lp_rx_timeout(unsigned ticks, bool x4, bool x16)
2749 unsigned long total_ticks;
2752 BUG_ON(ticks > 0x1fff);
2754 /* ticks in DSI_FCK */
2755 fck = dsi_fclk_rate();
2757 r = dsi_read_reg(DSI_TIMING2);
2758 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
2759 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
2760 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
2761 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
2762 dsi_write_reg(DSI_TIMING2, r);
2764 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2766 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
2768 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2769 (total_ticks * 1000) / (fck / 1000 / 1000));
2772 static void dsi_set_ta_timeout(unsigned ticks, bool x8, bool x16)
2775 unsigned long total_ticks;
2778 BUG_ON(ticks > 0x1fff);
2780 /* ticks in DSI_FCK */
2781 fck = dsi_fclk_rate();
2783 r = dsi_read_reg(DSI_TIMING1);
2784 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
2785 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
2786 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
2787 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
2788 dsi_write_reg(DSI_TIMING1, r);
2790 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
2792 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
2794 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
2795 (total_ticks * 1000) / (fck / 1000 / 1000));
2798 static void dsi_set_stop_state_counter(unsigned ticks, bool x4, bool x16)
2801 unsigned long total_ticks;
2804 BUG_ON(ticks > 0x1fff);
2806 /* ticks in DSI_FCK */
2807 fck = dsi_fclk_rate();
2809 r = dsi_read_reg(DSI_TIMING1);
2810 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2811 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
2812 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
2813 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
2814 dsi_write_reg(DSI_TIMING1, r);
2816 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2818 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
2820 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2821 (total_ticks * 1000) / (fck / 1000 / 1000));
2824 static void dsi_set_hs_tx_timeout(unsigned ticks, bool x4, bool x16)
2827 unsigned long total_ticks;
2830 BUG_ON(ticks > 0x1fff);
2832 /* ticks in TxByteClkHS */
2833 fck = dsi_get_txbyteclkhs();
2835 r = dsi_read_reg(DSI_TIMING2);
2836 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
2837 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
2838 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
2839 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
2840 dsi_write_reg(DSI_TIMING2, r);
2842 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2844 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
2846 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2847 (total_ticks * 1000) / (fck / 1000 / 1000));
2849 static int dsi_proto_config(struct omap_dss_device *dssdev)
2854 dsi_config_tx_fifo(DSI_FIFO_SIZE_32,
2859 dsi_config_rx_fifo(DSI_FIFO_SIZE_32,
2864 /* XXX what values for the timeouts? */
2865 dsi_set_stop_state_counter(0x1000, false, false);
2866 dsi_set_ta_timeout(0x1fff, true, true);
2867 dsi_set_lp_rx_timeout(0x1fff, true, true);
2868 dsi_set_hs_tx_timeout(0x1fff, true, true);
2870 switch (dssdev->ctrl.pixel_size) {
2884 r = dsi_read_reg(DSI_CTRL);
2885 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
2886 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
2887 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
2888 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
2889 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
2890 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
2891 r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */
2892 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
2893 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
2894 if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
2895 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
2896 /* DCS_CMD_CODE, 1=start, 0=continue */
2897 r = FLD_MOD(r, 0, 25, 25);
2900 dsi_write_reg(DSI_CTRL, r);
2902 dsi_vc_initial_config(0);
2903 dsi_vc_initial_config(1);
2904 dsi_vc_initial_config(2);
2905 dsi_vc_initial_config(3);
2910 static void dsi_proto_timings(struct omap_dss_device *dssdev)
2912 unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail;
2913 unsigned tclk_pre, tclk_post;
2914 unsigned ths_prepare, ths_prepare_ths_zero, ths_zero;
2915 unsigned ths_trail, ths_exit;
2916 unsigned ddr_clk_pre, ddr_clk_post;
2917 unsigned enter_hs_mode_lat, exit_hs_mode_lat;
2921 r = dsi_read_reg(DSI_DSIPHY_CFG0);
2922 ths_prepare = FLD_GET(r, 31, 24);
2923 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
2924 ths_zero = ths_prepare_ths_zero - ths_prepare;
2925 ths_trail = FLD_GET(r, 15, 8);
2926 ths_exit = FLD_GET(r, 7, 0);
2928 r = dsi_read_reg(DSI_DSIPHY_CFG1);
2929 tlpx = FLD_GET(r, 22, 16) * 2;
2930 tclk_trail = FLD_GET(r, 15, 8);
2931 tclk_zero = FLD_GET(r, 7, 0);
2933 r = dsi_read_reg(DSI_DSIPHY_CFG2);
2934 tclk_prepare = FLD_GET(r, 7, 0);
2938 /* min 60ns + 52*UI */
2939 tclk_post = ns2ddr(60) + 26;
2941 /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */
2942 if (dssdev->phy.dsi.data1_lane != 0 &&
2943 dssdev->phy.dsi.data2_lane != 0)
2948 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
2950 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
2952 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
2953 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
2955 r = dsi_read_reg(DSI_CLK_TIMING);
2956 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
2957 r = FLD_MOD(r, ddr_clk_post, 7, 0);
2958 dsi_write_reg(DSI_CLK_TIMING, r);
2960 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
2964 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
2965 DIV_ROUND_UP(ths_prepare, 4) +
2966 DIV_ROUND_UP(ths_zero + 3, 4);
2968 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
2970 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
2971 FLD_VAL(exit_hs_mode_lat, 15, 0);
2972 dsi_write_reg(DSI_VM_TIMING7, r);
2974 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
2975 enter_hs_mode_lat, exit_hs_mode_lat);
2979 #define DSI_DECL_VARS \
2980 int __dsi_cb = 0; u32 __dsi_cv = 0;
2982 #define DSI_FLUSH(ch) \
2983 if (__dsi_cb > 0) { \
2984 /*DSSDBG("sending long packet %#010x\n", __dsi_cv);*/ \
2985 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(ch), __dsi_cv); \
2986 __dsi_cb = __dsi_cv = 0; \
2989 #define DSI_PUSH(ch, data) \
2991 __dsi_cv |= (data) << (__dsi_cb * 8); \
2992 /*DSSDBG("cv = %#010x, cb = %d\n", __dsi_cv, __dsi_cb);*/ \
2993 if (++__dsi_cb > 3) \
2997 static int dsi_update_screen_l4(struct omap_dss_device *dssdev,
2998 int x, int y, int w, int h)
3000 /* Note: supports only 24bit colors in 32bit container */
3002 int fifo_stalls = 0;
3003 int max_dsi_packet_size;
3004 int max_data_per_packet;
3005 int max_pixels_per_packet;
3007 int bytespp = dssdev->ctrl.pixel_size / 8;
3013 struct omap_overlay *ovl;
3017 DSSDBG("dsi_update_screen_l4 (%d,%d %dx%d)\n",
3020 ovl = dssdev->manager->overlays[0];
3022 if (ovl->info.color_mode != OMAP_DSS_COLOR_RGB24U)
3025 if (dssdev->ctrl.pixel_size != 24)
3028 scr_width = ovl->info.screen_width;
3029 data = ovl->info.vaddr;
3031 start_offset = scr_width * y + x;
3032 horiz_inc = scr_width - w;
3035 /* We need header(4) + DCSCMD(1) + pixels(numpix*bytespp) bytes
3038 /* When using CPU, max long packet size is TX buffer size */
3039 max_dsi_packet_size = dsi.vc[0].fifo_size * 32 * 4;
3041 /* we seem to get better perf if we divide the tx fifo to half,
3042 and while the other half is being sent, we fill the other half
3043 max_dsi_packet_size /= 2; */
3045 max_data_per_packet = max_dsi_packet_size - 4 - 1;
3047 max_pixels_per_packet = max_data_per_packet / bytespp;
3049 DSSDBG("max_pixels_per_packet %d\n", max_pixels_per_packet);
3051 pixels_left = w * h;
3053 DSSDBG("total pixels %d\n", pixels_left);
3055 data += start_offset;
3057 while (pixels_left > 0) {
3058 /* 0x2c = write_memory_start */
3059 /* 0x3c = write_memory_continue */
3060 u8 dcs_cmd = first ? 0x2c : 0x3c;
3066 /* using fifo not empty */
3067 /* TX_FIFO_NOT_EMPTY */
3068 while (FLD_GET(dsi_read_reg(DSI_VC_CTRL(0)), 5, 5)) {
3070 if (fifo_stalls > 0xfffff) {
3071 DSSERR("fifo stalls overflow, pixels left %d\n",
3079 /* using fifo emptiness */
3080 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 <
3081 max_dsi_packet_size) {
3083 if (fifo_stalls > 0xfffff) {
3084 DSSERR("fifo stalls overflow, pixels left %d\n",
3091 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 == 0) {
3093 if (fifo_stalls > 0xfffff) {
3094 DSSERR("fifo stalls overflow, pixels left %d\n",
3101 pixels = min(max_pixels_per_packet, pixels_left);
3103 pixels_left -= pixels;
3105 dsi_vc_write_long_header(0, DSI_DT_DCS_LONG_WRITE,
3106 1 + pixels * bytespp, 0);
3108 DSI_PUSH(0, dcs_cmd);
3110 while (pixels-- > 0) {
3111 u32 pix = __raw_readl(data++);
3113 DSI_PUSH(0, (pix >> 16) & 0xff);
3114 DSI_PUSH(0, (pix >> 8) & 0xff);
3115 DSI_PUSH(0, (pix >> 0) & 0xff);
3118 if (current_x == x+w) {
3130 static void dsi_update_screen_dispc(struct omap_dss_device *dssdev,
3131 u16 x, u16 y, u16 w, u16 h)
3137 unsigned packet_payload;
3138 unsigned packet_len;
3141 const unsigned channel = dsi.update_channel;
3142 /* line buffer is 1024 x 24bits */
3143 /* XXX: for some reason using full buffer size causes considerable TX
3144 * slowdown with update sizes that fill the whole buffer */
3145 const unsigned line_buf_size = 1023 * 3;
3147 DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n",
3150 dsi_vc_config_vp(channel);
3152 bytespp = dssdev->ctrl.pixel_size / 8;
3153 bytespl = w * bytespp;
3154 bytespf = bytespl * h;
3156 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3157 * number of lines in a packet. See errata about VP_CLK_RATIO */
3159 if (bytespf < line_buf_size)
3160 packet_payload = bytespf;
3162 packet_payload = (line_buf_size) / bytespl * bytespl;
3164 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3165 total_len = (bytespf / packet_payload) * packet_len;
3167 if (bytespf % packet_payload)
3168 total_len += (bytespf % packet_payload) + 1;
3170 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3171 dsi_write_reg(DSI_VC_TE(channel), l);
3173 dsi_vc_write_long_header(channel, DSI_DT_DCS_LONG_WRITE, packet_len, 0);
3176 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3178 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3179 dsi_write_reg(DSI_VC_TE(channel), l);
3181 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3182 * because DSS interrupts are not capable of waking up the CPU and the
3183 * framedone interrupt could be delayed for quite a long time. I think
3184 * the same goes for any DSS interrupts, but for some reason I have not
3185 * seen the problem anywhere else than here.
3187 dispc_disable_sidle();
3189 dsi_perf_mark_start();
3191 r = queue_delayed_work(dsi.workqueue, &dsi.framedone_timeout_work,
3192 msecs_to_jiffies(250));
3195 dss_start_update(dssdev);
3197 if (dsi.te_enabled) {
3198 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3199 * for TE is longer than the timer allows */
3200 REG_FLD_MOD(DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3202 dsi_vc_send_bta(channel);
3204 #ifdef DSI_CATCH_MISSING_TE
3205 mod_timer(&dsi.te_timer, jiffies + msecs_to_jiffies(250));
3210 #ifdef DSI_CATCH_MISSING_TE
3211 static void dsi_te_timeout(unsigned long arg)
3213 DSSERR("TE not received for 250ms!\n");
3217 static void dsi_handle_framedone(int error)
3219 /* SIDLEMODE back to smart-idle */
3220 dispc_enable_sidle();
3222 if (dsi.te_enabled) {
3223 /* enable LP_RX_TO again after the TE */
3224 REG_FLD_MOD(DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
3227 dsi.framedone_callback(error, dsi.framedone_data);
3230 dsi_perf_show("DISPC");
3233 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
3235 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
3236 * 250ms which would conflict with this timeout work. What should be
3237 * done is first cancel the transfer on the HW, and then cancel the
3238 * possibly scheduled framedone work. However, cancelling the transfer
3239 * on the HW is buggy, and would probably require resetting the whole
3242 DSSERR("Framedone not received for 250ms!\n");
3244 dsi_handle_framedone(-ETIMEDOUT);
3247 static void dsi_framedone_irq_callback(void *data, u32 mask)
3249 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
3250 * turns itself off. However, DSI still has the pixels in its buffers,
3251 * and is sending the data.
3254 __cancel_delayed_work(&dsi.framedone_timeout_work);
3256 dsi_handle_framedone(0);
3258 #ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
3259 dispc_fake_vsync_irq();
3263 int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
3264 u16 *x, u16 *y, u16 *w, u16 *h,
3265 bool enlarge_update_area)
3269 dssdev->driver->get_resolution(dssdev, &dw, &dh);
3271 if (*x > dw || *y > dh)
3283 if (*w == 0 || *h == 0)
3286 dsi_perf_mark_setup();
3288 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3289 dss_setup_partial_planes(dssdev, x, y, w, h,
3290 enlarge_update_area);
3291 dispc_set_lcd_size(dssdev->manager->id, *w, *h);
3296 EXPORT_SYMBOL(omap_dsi_prepare_update);
3298 int omap_dsi_update(struct omap_dss_device *dssdev,
3300 u16 x, u16 y, u16 w, u16 h,
3301 void (*callback)(int, void *), void *data)
3303 dsi.update_channel = channel;
3305 /* OMAP DSS cannot send updates of odd widths.
3306 * omap_dsi_prepare_update() makes the widths even, but add a BUG_ON
3307 * here to make sure we catch erroneous updates. Otherwise we'll only
3308 * see rather obscure HW error happening, as DSS halts. */
3311 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3312 dsi.framedone_callback = callback;
3313 dsi.framedone_data = data;
3315 dsi.update_region.x = x;
3316 dsi.update_region.y = y;
3317 dsi.update_region.w = w;
3318 dsi.update_region.h = h;
3319 dsi.update_region.device = dssdev;
3321 dsi_update_screen_dispc(dssdev, x, y, w, h);
3325 r = dsi_update_screen_l4(dssdev, x, y, w, h);
3329 dsi_perf_show("L4");
3335 EXPORT_SYMBOL(omap_dsi_update);
3339 static int dsi_display_init_dispc(struct omap_dss_device *dssdev)
3343 r = omap_dispc_register_isr(dsi_framedone_irq_callback, NULL,
3344 DISPC_IRQ_FRAMEDONE);
3346 DSSERR("can't get FRAMEDONE irq\n");
3350 dispc_set_lcd_display_type(dssdev->manager->id,
3351 OMAP_DSS_LCD_DISPLAY_TFT);
3353 dispc_set_parallel_interface_mode(dssdev->manager->id,
3354 OMAP_DSS_PARALLELMODE_DSI);
3355 dispc_enable_fifohandcheck(dssdev->manager->id, 1);
3357 dispc_set_tft_data_lines(dssdev->manager->id, dssdev->ctrl.pixel_size);
3360 struct omap_video_timings timings = {
3369 dispc_set_lcd_timings(dssdev->manager->id, &timings);
3375 static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev)
3377 omap_dispc_unregister_isr(dsi_framedone_irq_callback, NULL,
3378 DISPC_IRQ_FRAMEDONE);
3381 static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev)
3383 struct dsi_clock_info cinfo;
3386 /* we always use DSS_CLK_SYSCK as input clock */
3387 cinfo.use_sys_clk = true;
3388 cinfo.regn = dssdev->clocks.dsi.regn;
3389 cinfo.regm = dssdev->clocks.dsi.regm;
3390 cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc;
3391 cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi;
3392 r = dsi_calc_clock_rates(dssdev, &cinfo);
3394 DSSERR("Failed to calc dsi clocks\n");
3398 r = dsi_pll_set_clock_div(&cinfo);
3400 DSSERR("Failed to set dsi clocks\n");
3407 static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev)
3409 struct dispc_clock_info dispc_cinfo;
3411 unsigned long long fck;
3413 fck = dsi_get_pll_hsdiv_dispc_rate();
3415 dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div;
3416 dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div;
3418 r = dispc_calc_clock_rates(fck, &dispc_cinfo);
3420 DSSERR("Failed to calc dispc clocks\n");
3424 r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
3426 DSSERR("Failed to set dispc clocks\n");
3433 static int dsi_display_init_dsi(struct omap_dss_device *dssdev)
3437 /* The SCPClk is required for both PLL and CIO registers on OMAP4 */
3438 /* CIO_CLK_ICG, enable L3 clk to CIO */
3439 REG_FLD_MOD(DSI_CLK_CTRL, 1, 14, 14);
3441 _dsi_print_reset_status();
3443 r = dsi_pll_init(dssdev, true, true);
3447 r = dsi_configure_dsi_clocks(dssdev);
3451 dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
3452 dss_select_dsi_clk_source(dssdev->clocks.dsi.dsi_fclk_src);
3453 dss_select_lcd_clk_source(dssdev->manager->id,
3454 dssdev->clocks.dispc.channel.lcd_clk_src);
3458 r = dsi_configure_dispc_clocks(dssdev);
3462 r = dsi_complexio_init(dssdev);
3466 _dsi_print_reset_status();
3468 dsi_proto_timings(dssdev);
3469 dsi_set_lp_clk_divisor(dssdev);
3472 _dsi_print_reset_status();
3474 r = dsi_proto_config(dssdev);
3478 /* enable interface */
3479 dsi_vc_enable(0, 1);
3480 dsi_vc_enable(1, 1);
3481 dsi_vc_enable(2, 1);
3482 dsi_vc_enable(3, 1);
3484 dsi_force_tx_stop_mode_io();
3488 dsi_complexio_uninit();
3490 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3491 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3498 static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev)
3500 /* disable interface */
3502 dsi_vc_enable(0, 0);
3503 dsi_vc_enable(1, 0);
3504 dsi_vc_enable(2, 0);
3505 dsi_vc_enable(3, 0);
3507 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3508 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3509 dsi_complexio_uninit();
3513 static int dsi_core_init(void)
3516 REG_FLD_MOD(DSI_SYSCONFIG, 1, 0, 0);
3519 REG_FLD_MOD(DSI_SYSCONFIG, 1, 2, 2);
3521 /* SIDLEMODE smart-idle */
3522 REG_FLD_MOD(DSI_SYSCONFIG, 2, 4, 3);
3524 _dsi_initialize_irq();
3529 int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
3533 DSSDBG("dsi_display_enable\n");
3535 WARN_ON(!dsi_bus_is_locked());
3537 mutex_lock(&dsi.lock);
3539 r = omap_dss_start_device(dssdev);
3541 DSSERR("failed to start device\n");
3546 dsi_enable_pll_clock(1);
3554 r = dsi_display_init_dispc(dssdev);
3558 r = dsi_display_init_dsi(dssdev);
3562 mutex_unlock(&dsi.lock);
3567 dsi_display_uninit_dispc(dssdev);
3570 dsi_enable_pll_clock(0);
3571 omap_dss_stop_device(dssdev);
3573 mutex_unlock(&dsi.lock);
3574 DSSDBG("dsi_display_enable FAILED\n");
3577 EXPORT_SYMBOL(omapdss_dsi_display_enable);
3579 void omapdss_dsi_display_disable(struct omap_dss_device *dssdev)
3581 DSSDBG("dsi_display_disable\n");
3583 WARN_ON(!dsi_bus_is_locked());
3585 mutex_lock(&dsi.lock);
3587 dsi_display_uninit_dispc(dssdev);
3589 dsi_display_uninit_dsi(dssdev);
3592 dsi_enable_pll_clock(0);
3594 omap_dss_stop_device(dssdev);
3596 mutex_unlock(&dsi.lock);
3598 EXPORT_SYMBOL(omapdss_dsi_display_disable);
3600 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
3602 dsi.te_enabled = enable;
3605 EXPORT_SYMBOL(omapdss_dsi_enable_te);
3607 void dsi_get_overlay_fifo_thresholds(enum omap_plane plane,
3608 u32 fifo_size, enum omap_burst_size *burst_size,
3609 u32 *fifo_low, u32 *fifo_high)
3611 unsigned burst_size_bytes;
3613 *burst_size = OMAP_DSS_BURST_16x32;
3614 burst_size_bytes = 16 * 32 / 8;
3616 *fifo_high = fifo_size - burst_size_bytes;
3617 *fifo_low = fifo_size - burst_size_bytes * 2;
3620 int dsi_init_display(struct omap_dss_device *dssdev)
3622 DSSDBG("DSI init\n");
3624 /* XXX these should be figured out dynamically */
3625 dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
3626 OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
3628 if (dsi.vdds_dsi_reg == NULL) {
3629 struct regulator *vdds_dsi;
3631 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
3633 if (IS_ERR(vdds_dsi)) {
3634 DSSERR("can't get VDDS_DSI regulator\n");
3635 return PTR_ERR(vdds_dsi);
3638 dsi.vdds_dsi_reg = vdds_dsi;
3644 int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
3648 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
3649 if (!dsi.vc[i].dssdev) {
3650 dsi.vc[i].dssdev = dssdev;
3656 DSSERR("cannot get VC for display %s", dssdev->name);
3659 EXPORT_SYMBOL(omap_dsi_request_vc);
3661 int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
3663 if (vc_id < 0 || vc_id > 3) {
3664 DSSERR("VC ID out of range\n");
3668 if (channel < 0 || channel > 3) {
3669 DSSERR("Virtual Channel out of range\n");
3673 if (dsi.vc[channel].dssdev != dssdev) {
3674 DSSERR("Virtual Channel not allocated to display %s\n",
3679 dsi.vc[channel].vc_id = vc_id;
3683 EXPORT_SYMBOL(omap_dsi_set_vc_id);
3685 void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel)
3687 if ((channel >= 0 && channel <= 3) &&
3688 dsi.vc[channel].dssdev == dssdev) {
3689 dsi.vc[channel].dssdev = NULL;
3690 dsi.vc[channel].vc_id = 0;
3693 EXPORT_SYMBOL(omap_dsi_release_vc);
3695 void dsi_wait_pll_hsdiv_dispc_active(void)
3697 if (wait_for_bit_change(DSI_PLL_STATUS, 7, 1) != 1)
3698 DSSERR("%s (%s) not active\n",
3699 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
3700 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC));
3703 void dsi_wait_pll_hsdiv_dsi_active(void)
3705 if (wait_for_bit_change(DSI_PLL_STATUS, 8, 1) != 1)
3706 DSSERR("%s (%s) not active\n",
3707 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
3708 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI));
3711 static void dsi_calc_clock_param_ranges(void)
3713 dsi.regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN);
3714 dsi.regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM);
3715 dsi.regm_dispc_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC);
3716 dsi.regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI);
3717 dsi.fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT);
3718 dsi.fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT);
3719 dsi.lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV);
3722 static int dsi_init(struct platform_device *pdev)
3726 struct resource *dsi_mem;
3728 spin_lock_init(&dsi.irq_lock);
3729 spin_lock_init(&dsi.errors_lock);
3732 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
3733 spin_lock_init(&dsi.irq_stats_lock);
3734 dsi.irq_stats.last_reset = jiffies;
3737 mutex_init(&dsi.lock);
3738 sema_init(&dsi.bus_lock, 1);
3740 dsi.workqueue = create_singlethread_workqueue("dsi");
3741 if (dsi.workqueue == NULL)
3744 INIT_DELAYED_WORK_DEFERRABLE(&dsi.framedone_timeout_work,
3745 dsi_framedone_timeout_work_callback);
3747 #ifdef DSI_CATCH_MISSING_TE
3748 init_timer(&dsi.te_timer);
3749 dsi.te_timer.function = dsi_te_timeout;
3750 dsi.te_timer.data = 0;
3752 dsi_mem = platform_get_resource(dsi.pdev, IORESOURCE_MEM, 0);
3754 DSSERR("can't get IORESOURCE_MEM DSI\n");
3758 dsi.base = ioremap(dsi_mem->start, resource_size(dsi_mem));
3760 DSSERR("can't ioremap DSI\n");
3764 dsi.irq = platform_get_irq(dsi.pdev, 0);
3766 DSSERR("platform_get_irq failed\n");
3771 r = request_irq(dsi.irq, omap_dsi_irq_handler, IRQF_SHARED,
3772 "OMAP DSI1", dsi.pdev);
3774 DSSERR("request_irq failed\n");
3778 /* DSI VCs initialization */
3779 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
3780 dsi.vc[i].mode = DSI_VC_MODE_L4;
3781 dsi.vc[i].dssdev = NULL;
3782 dsi.vc[i].vc_id = 0;
3785 dsi_calc_clock_param_ranges();
3789 rev = dsi_read_reg(DSI_REVISION);
3790 dev_dbg(&pdev->dev, "OMAP DSI rev %d.%d\n",
3791 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
3799 destroy_workqueue(dsi.workqueue);
3803 static void dsi_exit(void)
3805 if (dsi.vdds_dsi_reg != NULL) {
3806 regulator_put(dsi.vdds_dsi_reg);
3807 dsi.vdds_dsi_reg = NULL;
3810 free_irq(dsi.irq, dsi.pdev);
3813 destroy_workqueue(dsi.workqueue);
3815 DSSDBG("omap_dsi_exit\n");
3818 /* DSI1 HW IP initialisation */
3819 static int omap_dsi1hw_probe(struct platform_device *pdev)
3825 DSSERR("Failed to initialize DSI\n");
3832 static int omap_dsi1hw_remove(struct platform_device *pdev)
3838 static struct platform_driver omap_dsi1hw_driver = {
3839 .probe = omap_dsi1hw_probe,
3840 .remove = omap_dsi1hw_remove,
3842 .name = "omapdss_dsi1",
3843 .owner = THIS_MODULE,
3847 int dsi_init_platform_driver(void)
3849 return platform_driver_register(&omap_dsi1hw_driver);
3852 void dsi_uninit_platform_driver(void)
3854 return platform_driver_unregister(&omap_dsi1hw_driver);