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)
93 #define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028)
95 /* DSI_PLL_CTRL_SCP */
97 #define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000)
98 #define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004)
99 #define DSI_PLL_GO DSI_REG(0x300 + 0x0008)
100 #define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C)
101 #define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010)
103 #define REG_GET(idx, start, end) \
104 FLD_GET(dsi_read_reg(idx), start, end)
106 #define REG_FLD_MOD(idx, val, start, end) \
107 dsi_write_reg(idx, FLD_MOD(dsi_read_reg(idx), val, start, end))
109 /* Global interrupts */
110 #define DSI_IRQ_VC0 (1 << 0)
111 #define DSI_IRQ_VC1 (1 << 1)
112 #define DSI_IRQ_VC2 (1 << 2)
113 #define DSI_IRQ_VC3 (1 << 3)
114 #define DSI_IRQ_WAKEUP (1 << 4)
115 #define DSI_IRQ_RESYNC (1 << 5)
116 #define DSI_IRQ_PLL_LOCK (1 << 7)
117 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
118 #define DSI_IRQ_PLL_RECALL (1 << 9)
119 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
120 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
121 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
122 #define DSI_IRQ_TE_TRIGGER (1 << 16)
123 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
124 #define DSI_IRQ_SYNC_LOST (1 << 18)
125 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
126 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
127 #define DSI_IRQ_ERROR_MASK \
128 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
130 #define DSI_IRQ_CHANNEL_MASK 0xf
132 /* Virtual channel interrupts */
133 #define DSI_VC_IRQ_CS (1 << 0)
134 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
135 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
136 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
137 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
138 #define DSI_VC_IRQ_BTA (1 << 5)
139 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
140 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
141 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
142 #define DSI_VC_IRQ_ERROR_MASK \
143 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
144 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
145 DSI_VC_IRQ_FIFO_TX_UDF)
147 /* ComplexIO interrupts */
148 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
149 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
150 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
151 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
152 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
153 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
154 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
155 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
156 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
157 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
158 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
159 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
160 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
161 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
162 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
163 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
164 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
165 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
166 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
167 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
168 #define DSI_CIO_IRQ_ERROR_MASK \
169 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
170 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
171 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRCONTROL1 | \
172 DSI_CIO_IRQ_ERRCONTROL2 | DSI_CIO_IRQ_ERRCONTROL3 | \
173 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
174 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
175 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3)
177 #define DSI_DT_DCS_SHORT_WRITE_0 0x05
178 #define DSI_DT_DCS_SHORT_WRITE_1 0x15
179 #define DSI_DT_DCS_READ 0x06
180 #define DSI_DT_SET_MAX_RET_PKG_SIZE 0x37
181 #define DSI_DT_NULL_PACKET 0x09
182 #define DSI_DT_DCS_LONG_WRITE 0x39
184 #define DSI_DT_RX_ACK_WITH_ERR 0x02
185 #define DSI_DT_RX_DCS_LONG_READ 0x1c
186 #define DSI_DT_RX_SHORT_READ_1 0x21
187 #define DSI_DT_RX_SHORT_READ_2 0x22
189 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
191 #define DSI_MAX_NR_ISRS 2
193 struct dsi_isr_data {
201 DSI_FIFO_SIZE_32 = 1,
202 DSI_FIFO_SIZE_64 = 2,
203 DSI_FIFO_SIZE_96 = 3,
204 DSI_FIFO_SIZE_128 = 4,
215 DSI_DATA1_P = 1 << 2,
216 DSI_DATA1_N = 1 << 3,
217 DSI_DATA2_P = 1 << 4,
218 DSI_DATA2_N = 1 << 5,
221 struct dsi_update_region {
223 struct omap_dss_device *device;
226 struct dsi_irq_stats {
227 unsigned long last_reset;
229 unsigned dsi_irqs[32];
230 unsigned vc_irqs[4][32];
231 unsigned cio_irqs[32];
234 struct dsi_isr_tables {
235 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
236 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
237 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
242 struct platform_device *pdev;
246 struct dsi_clock_info current_cinfo;
248 struct regulator *vdds_dsi_reg;
251 enum dsi_vc_mode mode;
252 struct omap_dss_device *dssdev;
253 enum fifo_size fifo_size;
258 struct semaphore bus_lock;
263 struct dsi_isr_tables isr_tables;
264 /* space for a copy used by the interrupt handler */
265 struct dsi_isr_tables isr_tables_copy;
268 struct dsi_update_region update_region;
272 struct workqueue_struct *workqueue;
274 void (*framedone_callback)(int, void *);
275 void *framedone_data;
277 struct delayed_work framedone_timeout_work;
279 #ifdef DSI_CATCH_MISSING_TE
280 struct timer_list te_timer;
283 unsigned long cache_req_pck;
284 unsigned long cache_clk_freq;
285 struct dsi_clock_info cache_cinfo;
288 spinlock_t errors_lock;
290 ktime_t perf_setup_time;
291 ktime_t perf_start_time;
296 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
297 spinlock_t irq_stats_lock;
298 struct dsi_irq_stats irq_stats;
300 /* DSI PLL Parameter Ranges */
301 unsigned long regm_max, regn_max;
302 unsigned long regm_dispc_max, regm_dsi_max;
303 unsigned long fint_min, fint_max;
304 unsigned long lpdiv_max;
308 static unsigned int dsi_perf;
309 module_param_named(dsi_perf, dsi_perf, bool, 0644);
312 static inline void dsi_write_reg(const struct dsi_reg idx, u32 val)
314 __raw_writel(val, dsi.base + idx.idx);
317 static inline u32 dsi_read_reg(const struct dsi_reg idx)
319 return __raw_readl(dsi.base + idx.idx);
323 void dsi_save_context(void)
327 void dsi_restore_context(void)
331 void dsi_bus_lock(void)
335 EXPORT_SYMBOL(dsi_bus_lock);
337 void dsi_bus_unlock(void)
341 EXPORT_SYMBOL(dsi_bus_unlock);
343 static bool dsi_bus_is_locked(void)
345 return dsi.bus_lock.count == 0;
348 static void dsi_completion_handler(void *data, u32 mask)
350 complete((struct completion *)data);
353 static inline int wait_for_bit_change(const struct dsi_reg idx, int bitnum,
358 while (REG_GET(idx, bitnum, bitnum) != value) {
367 static void dsi_perf_mark_setup(void)
369 dsi.perf_setup_time = ktime_get();
372 static void dsi_perf_mark_start(void)
374 dsi.perf_start_time = ktime_get();
377 static void dsi_perf_show(const char *name)
379 ktime_t t, setup_time, trans_time;
381 u32 setup_us, trans_us, total_us;
388 setup_time = ktime_sub(dsi.perf_start_time, dsi.perf_setup_time);
389 setup_us = (u32)ktime_to_us(setup_time);
393 trans_time = ktime_sub(t, dsi.perf_start_time);
394 trans_us = (u32)ktime_to_us(trans_time);
398 total_us = setup_us + trans_us;
400 total_bytes = dsi.update_region.w *
401 dsi.update_region.h *
402 dsi.update_region.device->ctrl.pixel_size / 8;
404 printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), "
405 "%u bytes, %u kbytes/sec\n",
410 1000*1000 / total_us,
412 total_bytes * 1000 / total_us);
415 #define dsi_perf_mark_setup()
416 #define dsi_perf_mark_start()
417 #define dsi_perf_show(x)
420 static void print_irq_status(u32 status)
426 if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0)
429 printk(KERN_DEBUG "DSI IRQ: 0x%x: ", status);
432 if (status & DSI_IRQ_##x) \
458 static void print_irq_status_vc(int channel, u32 status)
464 if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
467 printk(KERN_DEBUG "DSI VC(%d) IRQ 0x%x: ", channel, status);
470 if (status & DSI_VC_IRQ_##x) \
487 static void print_irq_status_cio(u32 status)
492 printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status);
495 if (status & DSI_CIO_IRQ_##x) \
509 PIS(ERRCONTENTIONLP0_1);
510 PIS(ERRCONTENTIONLP1_1);
511 PIS(ERRCONTENTIONLP0_2);
512 PIS(ERRCONTENTIONLP1_2);
513 PIS(ERRCONTENTIONLP0_3);
514 PIS(ERRCONTENTIONLP1_3);
515 PIS(ULPSACTIVENOT_ALL0);
516 PIS(ULPSACTIVENOT_ALL1);
522 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
523 static void dsi_collect_irq_stats(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
527 spin_lock(&dsi.irq_stats_lock);
529 dsi.irq_stats.irq_count++;
530 dss_collect_irq_stats(irqstatus, dsi.irq_stats.dsi_irqs);
532 for (i = 0; i < 4; ++i)
533 dss_collect_irq_stats(vcstatus[i], dsi.irq_stats.vc_irqs[i]);
535 dss_collect_irq_stats(ciostatus, dsi.irq_stats.cio_irqs);
537 spin_unlock(&dsi.irq_stats_lock);
540 #define dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus)
543 static int debug_irq;
545 static void dsi_handle_irq_errors(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
549 if (irqstatus & DSI_IRQ_ERROR_MASK) {
550 DSSERR("DSI error, irqstatus %x\n", irqstatus);
551 print_irq_status(irqstatus);
552 spin_lock(&dsi.errors_lock);
553 dsi.errors |= irqstatus & DSI_IRQ_ERROR_MASK;
554 spin_unlock(&dsi.errors_lock);
555 } else if (debug_irq) {
556 print_irq_status(irqstatus);
559 for (i = 0; i < 4; ++i) {
560 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
561 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
563 print_irq_status_vc(i, vcstatus[i]);
564 } else if (debug_irq) {
565 print_irq_status_vc(i, vcstatus[i]);
569 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
570 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
571 print_irq_status_cio(ciostatus);
572 } else if (debug_irq) {
573 print_irq_status_cio(ciostatus);
577 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
578 unsigned isr_array_size, u32 irqstatus)
580 struct dsi_isr_data *isr_data;
583 for (i = 0; i < isr_array_size; i++) {
584 isr_data = &isr_array[i];
585 if (isr_data->isr && isr_data->mask & irqstatus)
586 isr_data->isr(isr_data->arg, irqstatus);
590 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
591 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
595 dsi_call_isrs(isr_tables->isr_table,
596 ARRAY_SIZE(isr_tables->isr_table),
599 for (i = 0; i < 4; ++i) {
600 if (vcstatus[i] == 0)
602 dsi_call_isrs(isr_tables->isr_table_vc[i],
603 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
608 dsi_call_isrs(isr_tables->isr_table_cio,
609 ARRAY_SIZE(isr_tables->isr_table_cio),
613 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
615 u32 irqstatus, vcstatus[4], ciostatus;
618 spin_lock(&dsi.irq_lock);
620 irqstatus = dsi_read_reg(DSI_IRQSTATUS);
622 /* IRQ is not for us */
624 spin_unlock(&dsi.irq_lock);
628 dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
629 /* flush posted write */
630 dsi_read_reg(DSI_IRQSTATUS);
632 for (i = 0; i < 4; ++i) {
633 if ((irqstatus & (1 << i)) == 0) {
638 vcstatus[i] = dsi_read_reg(DSI_VC_IRQSTATUS(i));
640 dsi_write_reg(DSI_VC_IRQSTATUS(i), vcstatus[i]);
641 /* flush posted write */
642 dsi_read_reg(DSI_VC_IRQSTATUS(i));
645 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
646 ciostatus = dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
648 dsi_write_reg(DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
649 /* flush posted write */
650 dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
655 #ifdef DSI_CATCH_MISSING_TE
656 if (irqstatus & DSI_IRQ_TE_TRIGGER)
657 del_timer(&dsi.te_timer);
660 /* make a copy and unlock, so that isrs can unregister
662 memcpy(&dsi.isr_tables_copy, &dsi.isr_tables, sizeof(dsi.isr_tables));
664 spin_unlock(&dsi.irq_lock);
666 dsi_handle_isrs(&dsi.isr_tables_copy, irqstatus, vcstatus, ciostatus);
668 dsi_handle_irq_errors(irqstatus, vcstatus, ciostatus);
670 dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus);
675 /* dsi.irq_lock has to be locked by the caller */
676 static void _omap_dsi_configure_irqs(struct dsi_isr_data *isr_array,
677 unsigned isr_array_size, u32 default_mask,
678 const struct dsi_reg enable_reg,
679 const struct dsi_reg status_reg)
681 struct dsi_isr_data *isr_data;
688 for (i = 0; i < isr_array_size; i++) {
689 isr_data = &isr_array[i];
691 if (isr_data->isr == NULL)
694 mask |= isr_data->mask;
697 old_mask = dsi_read_reg(enable_reg);
698 /* clear the irqstatus for newly enabled irqs */
699 dsi_write_reg(status_reg, (mask ^ old_mask) & mask);
700 dsi_write_reg(enable_reg, mask);
702 /* flush posted writes */
703 dsi_read_reg(enable_reg);
704 dsi_read_reg(status_reg);
707 /* dsi.irq_lock has to be locked by the caller */
708 static void _omap_dsi_set_irqs(void)
710 u32 mask = DSI_IRQ_ERROR_MASK;
711 #ifdef DSI_CATCH_MISSING_TE
712 mask |= DSI_IRQ_TE_TRIGGER;
714 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table,
715 ARRAY_SIZE(dsi.isr_tables.isr_table), mask,
716 DSI_IRQENABLE, DSI_IRQSTATUS);
719 /* dsi.irq_lock has to be locked by the caller */
720 static void _omap_dsi_set_irqs_vc(int vc)
722 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_vc[vc],
723 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[vc]),
724 DSI_VC_IRQ_ERROR_MASK,
725 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
728 /* dsi.irq_lock has to be locked by the caller */
729 static void _omap_dsi_set_irqs_cio(void)
731 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_cio,
732 ARRAY_SIZE(dsi.isr_tables.isr_table_cio),
733 DSI_CIO_IRQ_ERROR_MASK,
734 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
737 static void _dsi_initialize_irq(void)
742 spin_lock_irqsave(&dsi.irq_lock, flags);
744 memset(&dsi.isr_tables, 0, sizeof(dsi.isr_tables));
746 _omap_dsi_set_irqs();
747 for (vc = 0; vc < 4; ++vc)
748 _omap_dsi_set_irqs_vc(vc);
749 _omap_dsi_set_irqs_cio();
751 spin_unlock_irqrestore(&dsi.irq_lock, flags);
754 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
755 struct dsi_isr_data *isr_array, unsigned isr_array_size)
757 struct dsi_isr_data *isr_data;
763 /* check for duplicate entry and find a free slot */
765 for (i = 0; i < isr_array_size; i++) {
766 isr_data = &isr_array[i];
768 if (isr_data->isr == isr && isr_data->arg == arg &&
769 isr_data->mask == mask) {
773 if (isr_data->isr == NULL && free_idx == -1)
780 isr_data = &isr_array[free_idx];
783 isr_data->mask = mask;
788 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
789 struct dsi_isr_data *isr_array, unsigned isr_array_size)
791 struct dsi_isr_data *isr_data;
794 for (i = 0; i < isr_array_size; i++) {
795 isr_data = &isr_array[i];
796 if (isr_data->isr != isr || isr_data->arg != arg ||
797 isr_data->mask != mask)
800 isr_data->isr = NULL;
801 isr_data->arg = NULL;
810 static int dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
815 spin_lock_irqsave(&dsi.irq_lock, flags);
817 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table,
818 ARRAY_SIZE(dsi.isr_tables.isr_table));
821 _omap_dsi_set_irqs();
823 spin_unlock_irqrestore(&dsi.irq_lock, flags);
828 static int dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
833 spin_lock_irqsave(&dsi.irq_lock, flags);
835 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table,
836 ARRAY_SIZE(dsi.isr_tables.isr_table));
839 _omap_dsi_set_irqs();
841 spin_unlock_irqrestore(&dsi.irq_lock, flags);
846 static int dsi_register_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
852 spin_lock_irqsave(&dsi.irq_lock, flags);
854 r = _dsi_register_isr(isr, arg, mask,
855 dsi.isr_tables.isr_table_vc[channel],
856 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
859 _omap_dsi_set_irqs_vc(channel);
861 spin_unlock_irqrestore(&dsi.irq_lock, flags);
866 static int dsi_unregister_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
872 spin_lock_irqsave(&dsi.irq_lock, flags);
874 r = _dsi_unregister_isr(isr, arg, mask,
875 dsi.isr_tables.isr_table_vc[channel],
876 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
879 _omap_dsi_set_irqs_vc(channel);
881 spin_unlock_irqrestore(&dsi.irq_lock, flags);
886 static int dsi_register_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
891 spin_lock_irqsave(&dsi.irq_lock, flags);
893 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
894 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
897 _omap_dsi_set_irqs_cio();
899 spin_unlock_irqrestore(&dsi.irq_lock, flags);
904 static int dsi_unregister_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
909 spin_lock_irqsave(&dsi.irq_lock, flags);
911 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
912 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
915 _omap_dsi_set_irqs_cio();
917 spin_unlock_irqrestore(&dsi.irq_lock, flags);
922 static u32 dsi_get_errors(void)
926 spin_lock_irqsave(&dsi.errors_lock, flags);
929 spin_unlock_irqrestore(&dsi.errors_lock, flags);
933 /* DSI func clock. this could also be dsi_pll_hsdiv_dsi_clk */
934 static inline void enable_clocks(bool enable)
937 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
939 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
942 /* source clock for DSI PLL. this could also be PCLKFREE */
943 static inline void dsi_enable_pll_clock(bool enable)
946 dss_clk_enable(DSS_CLK_SYSCK);
948 dss_clk_disable(DSS_CLK_SYSCK);
950 if (enable && dsi.pll_locked) {
951 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1)
952 DSSERR("cannot lock PLL when enabling clocks\n");
957 static void _dsi_print_reset_status(void)
964 /* A dummy read using the SCP interface to any DSIPHY register is
965 * required after DSIPHY reset to complete the reset of the DSI complex
967 l = dsi_read_reg(DSI_DSIPHY_CFG5);
969 printk(KERN_DEBUG "DSI resets: ");
971 l = dsi_read_reg(DSI_PLL_STATUS);
972 printk("PLL (%d) ", FLD_GET(l, 0, 0));
974 l = dsi_read_reg(DSI_COMPLEXIO_CFG1);
975 printk("CIO (%d) ", FLD_GET(l, 29, 29));
977 l = dsi_read_reg(DSI_DSIPHY_CFG5);
978 printk("PHY (%x, %d, %d, %d)\n",
985 #define _dsi_print_reset_status()
988 static inline int dsi_if_enable(bool enable)
990 DSSDBG("dsi_if_enable(%d)\n", enable);
992 enable = enable ? 1 : 0;
993 REG_FLD_MOD(DSI_CTRL, enable, 0, 0); /* IF_EN */
995 if (wait_for_bit_change(DSI_CTRL, 0, enable) != enable) {
996 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1003 unsigned long dsi_get_pll_hsdiv_dispc_rate(void)
1005 return dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk;
1008 static unsigned long dsi_get_pll_hsdiv_dsi_rate(void)
1010 return dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk;
1013 static unsigned long dsi_get_txbyteclkhs(void)
1015 return dsi.current_cinfo.clkin4ddr / 16;
1018 static unsigned long dsi_fclk_rate(void)
1022 if (dss_get_dsi_clk_source() == OMAP_DSS_CLK_SRC_FCK) {
1023 /* DSI FCLK source is DSS_CLK_FCK */
1024 r = dss_clk_get_rate(DSS_CLK_FCK);
1026 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1027 r = dsi_get_pll_hsdiv_dsi_rate();
1033 static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev)
1035 unsigned long dsi_fclk;
1036 unsigned lp_clk_div;
1037 unsigned long lp_clk;
1039 lp_clk_div = dssdev->clocks.dsi.lp_clk_div;
1041 if (lp_clk_div == 0 || lp_clk_div > dsi.lpdiv_max)
1044 dsi_fclk = dsi_fclk_rate();
1046 lp_clk = dsi_fclk / 2 / lp_clk_div;
1048 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1049 dsi.current_cinfo.lp_clk = lp_clk;
1050 dsi.current_cinfo.lp_clk_div = lp_clk_div;
1052 REG_FLD_MOD(DSI_CLK_CTRL, lp_clk_div, 12, 0); /* LP_CLK_DIVISOR */
1054 REG_FLD_MOD(DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0,
1055 21, 21); /* LP_RX_SYNCHRO_ENABLE */
1061 enum dsi_pll_power_state {
1062 DSI_PLL_POWER_OFF = 0x0,
1063 DSI_PLL_POWER_ON_HSCLK = 0x1,
1064 DSI_PLL_POWER_ON_ALL = 0x2,
1065 DSI_PLL_POWER_ON_DIV = 0x3,
1068 static int dsi_pll_power(enum dsi_pll_power_state state)
1072 /* DSI-PLL power command 0x3 is not working */
1073 if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
1074 state == DSI_PLL_POWER_ON_DIV)
1075 state = DSI_PLL_POWER_ON_ALL;
1077 REG_FLD_MOD(DSI_CLK_CTRL, state, 31, 30); /* PLL_PWR_CMD */
1079 /* PLL_PWR_STATUS */
1080 while (FLD_GET(dsi_read_reg(DSI_CLK_CTRL), 29, 28) != state) {
1082 DSSERR("Failed to set DSI PLL power mode to %d\n",
1092 /* calculate clock rates using dividers in cinfo */
1093 static int dsi_calc_clock_rates(struct omap_dss_device *dssdev,
1094 struct dsi_clock_info *cinfo)
1096 if (cinfo->regn == 0 || cinfo->regn > dsi.regn_max)
1099 if (cinfo->regm == 0 || cinfo->regm > dsi.regm_max)
1102 if (cinfo->regm_dispc > dsi.regm_dispc_max)
1105 if (cinfo->regm_dsi > dsi.regm_dsi_max)
1108 if (cinfo->use_sys_clk) {
1109 cinfo->clkin = dss_clk_get_rate(DSS_CLK_SYSCK);
1110 /* XXX it is unclear if highfreq should be used
1111 * with DSS_SYS_CLK source also */
1112 cinfo->highfreq = 0;
1114 cinfo->clkin = dispc_pclk_rate(dssdev->manager->id);
1116 if (cinfo->clkin < 32000000)
1117 cinfo->highfreq = 0;
1119 cinfo->highfreq = 1;
1122 cinfo->fint = cinfo->clkin / (cinfo->regn * (cinfo->highfreq ? 2 : 1));
1124 if (cinfo->fint > dsi.fint_max || cinfo->fint < dsi.fint_min)
1127 cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint;
1129 if (cinfo->clkin4ddr > 1800 * 1000 * 1000)
1132 if (cinfo->regm_dispc > 0)
1133 cinfo->dsi_pll_hsdiv_dispc_clk =
1134 cinfo->clkin4ddr / cinfo->regm_dispc;
1136 cinfo->dsi_pll_hsdiv_dispc_clk = 0;
1138 if (cinfo->regm_dsi > 0)
1139 cinfo->dsi_pll_hsdiv_dsi_clk =
1140 cinfo->clkin4ddr / cinfo->regm_dsi;
1142 cinfo->dsi_pll_hsdiv_dsi_clk = 0;
1147 int dsi_pll_calc_clock_div_pck(bool is_tft, unsigned long req_pck,
1148 struct dsi_clock_info *dsi_cinfo,
1149 struct dispc_clock_info *dispc_cinfo)
1151 struct dsi_clock_info cur, best;
1152 struct dispc_clock_info best_dispc;
1153 int min_fck_per_pck;
1155 unsigned long dss_sys_clk, max_dss_fck;
1157 dss_sys_clk = dss_clk_get_rate(DSS_CLK_SYSCK);
1159 max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
1161 if (req_pck == dsi.cache_req_pck &&
1162 dsi.cache_cinfo.clkin == dss_sys_clk) {
1163 DSSDBG("DSI clock info found from cache\n");
1164 *dsi_cinfo = dsi.cache_cinfo;
1165 dispc_find_clk_divs(is_tft, req_pck,
1166 dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo);
1170 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
1172 if (min_fck_per_pck &&
1173 req_pck * min_fck_per_pck > max_dss_fck) {
1174 DSSERR("Requested pixel clock not possible with the current "
1175 "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning "
1176 "the constraint off.\n");
1177 min_fck_per_pck = 0;
1180 DSSDBG("dsi_pll_calc\n");
1183 memset(&best, 0, sizeof(best));
1184 memset(&best_dispc, 0, sizeof(best_dispc));
1186 memset(&cur, 0, sizeof(cur));
1187 cur.clkin = dss_sys_clk;
1188 cur.use_sys_clk = 1;
1191 /* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */
1192 /* highfreq: 0.75MHz < Fint = clkin / (2*regn) < 2.1MHz */
1193 /* To reduce PLL lock time, keep Fint high (around 2 MHz) */
1194 for (cur.regn = 1; cur.regn < dsi.regn_max; ++cur.regn) {
1195 if (cur.highfreq == 0)
1196 cur.fint = cur.clkin / cur.regn;
1198 cur.fint = cur.clkin / (2 * cur.regn);
1200 if (cur.fint > dsi.fint_max || cur.fint < dsi.fint_min)
1203 /* DSIPHY(MHz) = (2 * regm / regn) * (clkin / (highfreq + 1)) */
1204 for (cur.regm = 1; cur.regm < dsi.regm_max; ++cur.regm) {
1207 a = 2 * cur.regm * (cur.clkin/1000);
1208 b = cur.regn * (cur.highfreq + 1);
1209 cur.clkin4ddr = a / b * 1000;
1211 if (cur.clkin4ddr > 1800 * 1000 * 1000)
1214 /* dsi_pll_hsdiv_dispc_clk(MHz) =
1215 * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */
1216 for (cur.regm_dispc = 1; cur.regm_dispc < dsi.regm_dispc_max;
1218 struct dispc_clock_info cur_dispc;
1219 cur.dsi_pll_hsdiv_dispc_clk =
1220 cur.clkin4ddr / cur.regm_dispc;
1222 /* this will narrow down the search a bit,
1223 * but still give pixclocks below what was
1225 if (cur.dsi_pll_hsdiv_dispc_clk < req_pck)
1228 if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck)
1231 if (min_fck_per_pck &&
1232 cur.dsi_pll_hsdiv_dispc_clk <
1233 req_pck * min_fck_per_pck)
1238 dispc_find_clk_divs(is_tft, req_pck,
1239 cur.dsi_pll_hsdiv_dispc_clk,
1242 if (abs(cur_dispc.pck - req_pck) <
1243 abs(best_dispc.pck - req_pck)) {
1245 best_dispc = cur_dispc;
1247 if (cur_dispc.pck == req_pck)
1255 if (min_fck_per_pck) {
1256 DSSERR("Could not find suitable clock settings.\n"
1257 "Turning FCK/PCK constraint off and"
1259 min_fck_per_pck = 0;
1263 DSSERR("Could not find suitable clock settings.\n");
1268 /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */
1270 best.dsi_pll_hsdiv_dsi_clk = 0;
1275 *dispc_cinfo = best_dispc;
1277 dsi.cache_req_pck = req_pck;
1278 dsi.cache_clk_freq = 0;
1279 dsi.cache_cinfo = best;
1284 int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo)
1289 u8 regn_start, regn_end, regm_start, regm_end;
1290 u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end;
1294 dsi.current_cinfo.use_sys_clk = cinfo->use_sys_clk;
1295 dsi.current_cinfo.highfreq = cinfo->highfreq;
1297 dsi.current_cinfo.fint = cinfo->fint;
1298 dsi.current_cinfo.clkin4ddr = cinfo->clkin4ddr;
1299 dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk =
1300 cinfo->dsi_pll_hsdiv_dispc_clk;
1301 dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk =
1302 cinfo->dsi_pll_hsdiv_dsi_clk;
1304 dsi.current_cinfo.regn = cinfo->regn;
1305 dsi.current_cinfo.regm = cinfo->regm;
1306 dsi.current_cinfo.regm_dispc = cinfo->regm_dispc;
1307 dsi.current_cinfo.regm_dsi = cinfo->regm_dsi;
1309 DSSDBG("DSI Fint %ld\n", cinfo->fint);
1311 DSSDBG("clkin (%s) rate %ld, highfreq %d\n",
1312 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree",
1316 /* DSIPHY == CLKIN4DDR */
1317 DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu / %d = %lu\n",
1321 cinfo->highfreq + 1,
1324 DSSDBG("Data rate on 1 DSI lane %ld Mbps\n",
1325 cinfo->clkin4ddr / 1000 / 1000 / 2);
1327 DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4);
1329 DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc,
1330 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1331 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1332 cinfo->dsi_pll_hsdiv_dispc_clk);
1333 DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi,
1334 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1335 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1336 cinfo->dsi_pll_hsdiv_dsi_clk);
1338 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end);
1339 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end);
1340 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start,
1342 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start,
1345 REG_FLD_MOD(DSI_PLL_CONTROL, 0, 0, 0); /* DSI_PLL_AUTOMODE = manual */
1347 l = dsi_read_reg(DSI_PLL_CONFIGURATION1);
1348 l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */
1350 l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end);
1352 l = FLD_MOD(l, cinfo->regm, regm_start, regm_end);
1354 l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0,
1355 regm_dispc_start, regm_dispc_end);
1356 /* DSIPROTO_CLOCK_DIV */
1357 l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0,
1358 regm_dsi_start, regm_dsi_end);
1359 dsi_write_reg(DSI_PLL_CONFIGURATION1, l);
1361 BUG_ON(cinfo->fint < dsi.fint_min || cinfo->fint > dsi.fint_max);
1363 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) {
1364 f = cinfo->fint < 1000000 ? 0x3 :
1365 cinfo->fint < 1250000 ? 0x4 :
1366 cinfo->fint < 1500000 ? 0x5 :
1367 cinfo->fint < 1750000 ? 0x6 :
1371 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1373 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL))
1374 l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */
1375 l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1,
1376 11, 11); /* DSI_PLL_CLKSEL */
1377 l = FLD_MOD(l, cinfo->highfreq,
1378 12, 12); /* DSI_PLL_HIGHFREQ */
1379 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1380 l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */
1381 l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */
1382 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1384 REG_FLD_MOD(DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */
1386 if (wait_for_bit_change(DSI_PLL_GO, 0, 0) != 0) {
1387 DSSERR("dsi pll go bit not going down.\n");
1392 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1) {
1393 DSSERR("cannot lock PLL\n");
1400 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1401 l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */
1402 l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */
1403 l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */
1404 l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */
1405 l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */
1406 l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */
1407 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1408 l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */
1409 l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */
1410 l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */
1411 l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */
1412 l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */
1413 l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */
1414 l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */
1415 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1417 DSSDBG("PLL config done\n");
1422 int dsi_pll_init(struct omap_dss_device *dssdev, bool enable_hsclk,
1426 enum dsi_pll_power_state pwstate;
1428 DSSDBG("PLL init\n");
1430 if (dsi.vdds_dsi_reg == NULL) {
1431 struct regulator *vdds_dsi;
1433 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
1435 if (IS_ERR(vdds_dsi)) {
1436 DSSERR("can't get VDDS_DSI regulator\n");
1437 return PTR_ERR(vdds_dsi);
1440 dsi.vdds_dsi_reg = vdds_dsi;
1444 dsi_enable_pll_clock(1);
1446 r = regulator_enable(dsi.vdds_dsi_reg);
1450 /* XXX PLL does not come out of reset without this... */
1451 dispc_pck_free_enable(1);
1453 if (wait_for_bit_change(DSI_PLL_STATUS, 0, 1) != 1) {
1454 DSSERR("PLL not coming out of reset.\n");
1456 dispc_pck_free_enable(0);
1460 /* XXX ... but if left on, we get problems when planes do not
1461 * fill the whole display. No idea about this */
1462 dispc_pck_free_enable(0);
1464 if (enable_hsclk && enable_hsdiv)
1465 pwstate = DSI_PLL_POWER_ON_ALL;
1466 else if (enable_hsclk)
1467 pwstate = DSI_PLL_POWER_ON_HSCLK;
1468 else if (enable_hsdiv)
1469 pwstate = DSI_PLL_POWER_ON_DIV;
1471 pwstate = DSI_PLL_POWER_OFF;
1473 r = dsi_pll_power(pwstate);
1478 DSSDBG("PLL init done\n");
1482 regulator_disable(dsi.vdds_dsi_reg);
1485 dsi_enable_pll_clock(0);
1489 void dsi_pll_uninit(void)
1492 dsi_enable_pll_clock(0);
1495 dsi_pll_power(DSI_PLL_POWER_OFF);
1496 regulator_disable(dsi.vdds_dsi_reg);
1497 DSSDBG("PLL uninit done\n");
1500 void dsi_dump_clocks(struct seq_file *s)
1502 struct dsi_clock_info *cinfo = &dsi.current_cinfo;
1503 enum omap_dss_clk_source dispc_clk_src, dsi_clk_src;
1505 dispc_clk_src = dss_get_dispc_clk_source();
1506 dsi_clk_src = dss_get_dsi_clk_source();
1510 seq_printf(s, "- DSI PLL -\n");
1512 seq_printf(s, "dsi pll source = %s\n",
1513 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree");
1515 seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn);
1517 seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n",
1518 cinfo->clkin4ddr, cinfo->regm);
1520 seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n",
1521 dss_get_generic_clk_source_name(dispc_clk_src),
1522 dss_feat_get_clk_source_name(dispc_clk_src),
1523 cinfo->dsi_pll_hsdiv_dispc_clk,
1525 dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1528 seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n",
1529 dss_get_generic_clk_source_name(dsi_clk_src),
1530 dss_feat_get_clk_source_name(dsi_clk_src),
1531 cinfo->dsi_pll_hsdiv_dsi_clk,
1533 dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1536 seq_printf(s, "- DSI -\n");
1538 seq_printf(s, "dsi fclk source = %s (%s)\n",
1539 dss_get_generic_clk_source_name(dsi_clk_src),
1540 dss_feat_get_clk_source_name(dsi_clk_src));
1542 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate());
1544 seq_printf(s, "DDR_CLK\t\t%lu\n",
1545 cinfo->clkin4ddr / 4);
1547 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs());
1549 seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk);
1551 seq_printf(s, "VP_CLK\t\t%lu\n"
1553 dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD),
1554 dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD));
1559 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1560 void dsi_dump_irqs(struct seq_file *s)
1562 unsigned long flags;
1563 struct dsi_irq_stats stats;
1565 spin_lock_irqsave(&dsi.irq_stats_lock, flags);
1567 stats = dsi.irq_stats;
1568 memset(&dsi.irq_stats, 0, sizeof(dsi.irq_stats));
1569 dsi.irq_stats.last_reset = jiffies;
1571 spin_unlock_irqrestore(&dsi.irq_stats_lock, flags);
1573 seq_printf(s, "period %u ms\n",
1574 jiffies_to_msecs(jiffies - stats.last_reset));
1576 seq_printf(s, "irqs %d\n", stats.irq_count);
1578 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1580 seq_printf(s, "-- DSI interrupts --\n");
1596 PIS(LDO_POWER_GOOD);
1601 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1602 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1603 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1604 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1605 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1607 seq_printf(s, "-- VC interrupts --\n");
1616 PIS(PP_BUSY_CHANGE);
1620 seq_printf(s, "%-20s %10d\n", #x, \
1621 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1623 seq_printf(s, "-- CIO interrupts --\n");
1636 PIS(ERRCONTENTIONLP0_1);
1637 PIS(ERRCONTENTIONLP1_1);
1638 PIS(ERRCONTENTIONLP0_2);
1639 PIS(ERRCONTENTIONLP1_2);
1640 PIS(ERRCONTENTIONLP0_3);
1641 PIS(ERRCONTENTIONLP1_3);
1642 PIS(ULPSACTIVENOT_ALL0);
1643 PIS(ULPSACTIVENOT_ALL1);
1648 void dsi_dump_regs(struct seq_file *s)
1650 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(r))
1652 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
1654 DUMPREG(DSI_REVISION);
1655 DUMPREG(DSI_SYSCONFIG);
1656 DUMPREG(DSI_SYSSTATUS);
1657 DUMPREG(DSI_IRQSTATUS);
1658 DUMPREG(DSI_IRQENABLE);
1660 DUMPREG(DSI_COMPLEXIO_CFG1);
1661 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1662 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1663 DUMPREG(DSI_CLK_CTRL);
1664 DUMPREG(DSI_TIMING1);
1665 DUMPREG(DSI_TIMING2);
1666 DUMPREG(DSI_VM_TIMING1);
1667 DUMPREG(DSI_VM_TIMING2);
1668 DUMPREG(DSI_VM_TIMING3);
1669 DUMPREG(DSI_CLK_TIMING);
1670 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1671 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1672 DUMPREG(DSI_COMPLEXIO_CFG2);
1673 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1674 DUMPREG(DSI_VM_TIMING4);
1675 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1676 DUMPREG(DSI_VM_TIMING5);
1677 DUMPREG(DSI_VM_TIMING6);
1678 DUMPREG(DSI_VM_TIMING7);
1679 DUMPREG(DSI_STOPCLK_TIMING);
1681 DUMPREG(DSI_VC_CTRL(0));
1682 DUMPREG(DSI_VC_TE(0));
1683 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1684 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1685 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1686 DUMPREG(DSI_VC_IRQSTATUS(0));
1687 DUMPREG(DSI_VC_IRQENABLE(0));
1689 DUMPREG(DSI_VC_CTRL(1));
1690 DUMPREG(DSI_VC_TE(1));
1691 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1692 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1693 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1694 DUMPREG(DSI_VC_IRQSTATUS(1));
1695 DUMPREG(DSI_VC_IRQENABLE(1));
1697 DUMPREG(DSI_VC_CTRL(2));
1698 DUMPREG(DSI_VC_TE(2));
1699 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1700 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1701 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1702 DUMPREG(DSI_VC_IRQSTATUS(2));
1703 DUMPREG(DSI_VC_IRQENABLE(2));
1705 DUMPREG(DSI_VC_CTRL(3));
1706 DUMPREG(DSI_VC_TE(3));
1707 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1708 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1709 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1710 DUMPREG(DSI_VC_IRQSTATUS(3));
1711 DUMPREG(DSI_VC_IRQENABLE(3));
1713 DUMPREG(DSI_DSIPHY_CFG0);
1714 DUMPREG(DSI_DSIPHY_CFG1);
1715 DUMPREG(DSI_DSIPHY_CFG2);
1716 DUMPREG(DSI_DSIPHY_CFG5);
1718 DUMPREG(DSI_PLL_CONTROL);
1719 DUMPREG(DSI_PLL_STATUS);
1720 DUMPREG(DSI_PLL_GO);
1721 DUMPREG(DSI_PLL_CONFIGURATION1);
1722 DUMPREG(DSI_PLL_CONFIGURATION2);
1724 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
1728 enum dsi_complexio_power_state {
1729 DSI_COMPLEXIO_POWER_OFF = 0x0,
1730 DSI_COMPLEXIO_POWER_ON = 0x1,
1731 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1734 static int dsi_complexio_power(enum dsi_complexio_power_state state)
1739 REG_FLD_MOD(DSI_COMPLEXIO_CFG1, state, 28, 27);
1742 while (FLD_GET(dsi_read_reg(DSI_COMPLEXIO_CFG1), 26, 25) != state) {
1744 DSSERR("failed to set complexio power state to "
1754 static void dsi_complexio_config(struct omap_dss_device *dssdev)
1758 int clk_lane = dssdev->phy.dsi.clk_lane;
1759 int data1_lane = dssdev->phy.dsi.data1_lane;
1760 int data2_lane = dssdev->phy.dsi.data2_lane;
1761 int clk_pol = dssdev->phy.dsi.clk_pol;
1762 int data1_pol = dssdev->phy.dsi.data1_pol;
1763 int data2_pol = dssdev->phy.dsi.data2_pol;
1765 r = dsi_read_reg(DSI_COMPLEXIO_CFG1);
1766 r = FLD_MOD(r, clk_lane, 2, 0);
1767 r = FLD_MOD(r, clk_pol, 3, 3);
1768 r = FLD_MOD(r, data1_lane, 6, 4);
1769 r = FLD_MOD(r, data1_pol, 7, 7);
1770 r = FLD_MOD(r, data2_lane, 10, 8);
1771 r = FLD_MOD(r, data2_pol, 11, 11);
1772 dsi_write_reg(DSI_COMPLEXIO_CFG1, r);
1774 /* The configuration of the DSI complex I/O (number of data lanes,
1775 position, differential order) should not be changed while
1776 DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. In order for
1777 the hardware to take into account a new configuration of the complex
1778 I/O (done in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to
1779 follow this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1,
1780 then reset the DSS.DSI_CTRL[0] IF_EN to 0, then set
1781 DSS.DSI_CLK_CTRL[20] LP_CLK_ENABLE to 1 and finally set again the
1782 DSS.DSI_CTRL[0] IF_EN bit to 1. If the sequence is not followed, the
1783 DSI complex I/O configuration is unknown. */
1786 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1787 REG_FLD_MOD(DSI_CTRL, 0, 0, 0);
1788 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20);
1789 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1793 static inline unsigned ns2ddr(unsigned ns)
1795 /* convert time in ns to ddr ticks, rounding up */
1796 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1797 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1800 static inline unsigned ddr2ns(unsigned ddr)
1802 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1803 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1806 static void dsi_complexio_timings(void)
1809 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1810 u32 tlpx_half, tclk_trail, tclk_zero;
1813 /* calculate timings */
1815 /* 1 * DDR_CLK = 2 * UI */
1817 /* min 40ns + 4*UI max 85ns + 6*UI */
1818 ths_prepare = ns2ddr(70) + 2;
1820 /* min 145ns + 10*UI */
1821 ths_prepare_ths_zero = ns2ddr(175) + 2;
1823 /* min max(8*UI, 60ns+4*UI) */
1824 ths_trail = ns2ddr(60) + 5;
1827 ths_exit = ns2ddr(145);
1830 tlpx_half = ns2ddr(25);
1833 tclk_trail = ns2ddr(60) + 2;
1835 /* min 38ns, max 95ns */
1836 tclk_prepare = ns2ddr(65);
1838 /* min tclk-prepare + tclk-zero = 300ns */
1839 tclk_zero = ns2ddr(260);
1841 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1842 ths_prepare, ddr2ns(ths_prepare),
1843 ths_prepare_ths_zero, ddr2ns(ths_prepare_ths_zero));
1844 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1845 ths_trail, ddr2ns(ths_trail),
1846 ths_exit, ddr2ns(ths_exit));
1848 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1849 "tclk_zero %u (%uns)\n",
1850 tlpx_half, ddr2ns(tlpx_half),
1851 tclk_trail, ddr2ns(tclk_trail),
1852 tclk_zero, ddr2ns(tclk_zero));
1853 DSSDBG("tclk_prepare %u (%uns)\n",
1854 tclk_prepare, ddr2ns(tclk_prepare));
1856 /* program timings */
1858 r = dsi_read_reg(DSI_DSIPHY_CFG0);
1859 r = FLD_MOD(r, ths_prepare, 31, 24);
1860 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1861 r = FLD_MOD(r, ths_trail, 15, 8);
1862 r = FLD_MOD(r, ths_exit, 7, 0);
1863 dsi_write_reg(DSI_DSIPHY_CFG0, r);
1865 r = dsi_read_reg(DSI_DSIPHY_CFG1);
1866 r = FLD_MOD(r, tlpx_half, 22, 16);
1867 r = FLD_MOD(r, tclk_trail, 15, 8);
1868 r = FLD_MOD(r, tclk_zero, 7, 0);
1869 dsi_write_reg(DSI_DSIPHY_CFG1, r);
1871 r = dsi_read_reg(DSI_DSIPHY_CFG2);
1872 r = FLD_MOD(r, tclk_prepare, 7, 0);
1873 dsi_write_reg(DSI_DSIPHY_CFG2, r);
1876 static void dsi_enable_lane_override(struct omap_dss_device *dssdev,
1877 enum dsi_lane lanes)
1879 int clk_lane = dssdev->phy.dsi.clk_lane;
1880 int data1_lane = dssdev->phy.dsi.data1_lane;
1881 int data2_lane = dssdev->phy.dsi.data2_lane;
1882 int clk_pol = dssdev->phy.dsi.clk_pol;
1883 int data1_pol = dssdev->phy.dsi.data1_pol;
1884 int data2_pol = dssdev->phy.dsi.data2_pol;
1888 if (lanes & DSI_CLK_P)
1889 l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 0 : 1));
1890 if (lanes & DSI_CLK_N)
1891 l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 1 : 0));
1893 if (lanes & DSI_DATA1_P)
1894 l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 0 : 1));
1895 if (lanes & DSI_DATA1_N)
1896 l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 1 : 0));
1898 if (lanes & DSI_DATA2_P)
1899 l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 0 : 1));
1900 if (lanes & DSI_DATA2_N)
1901 l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 1 : 0));
1904 * Bits in REGLPTXSCPDAT4TO0DXDY:
1910 /* Set the lane override configuration */
1911 REG_FLD_MOD(DSI_DSIPHY_CFG10, l, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
1913 /* Enable lane override */
1914 REG_FLD_MOD(DSI_DSIPHY_CFG10, 1, 27, 27); /* ENLPTXSCPDAT */
1917 static void dsi_disable_lane_override(void)
1919 /* Disable lane override */
1920 REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
1921 /* Reset the lane override configuration */
1922 REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
1925 static int dsi_complexio_init(struct omap_dss_device *dssdev)
1929 DSSDBG("dsi_complexio_init\n");
1931 /* A dummy read using the SCP interface to any DSIPHY register is
1932 * required after DSIPHY reset to complete the reset of the DSI complex
1934 dsi_read_reg(DSI_DSIPHY_CFG5);
1936 if (wait_for_bit_change(DSI_DSIPHY_CFG5, 30, 1) != 1) {
1937 DSSERR("ComplexIO PHY not coming out of reset.\n");
1942 dsi_complexio_config(dssdev);
1944 r = dsi_complexio_power(DSI_COMPLEXIO_POWER_ON);
1949 if (wait_for_bit_change(DSI_COMPLEXIO_CFG1, 29, 1) != 1) {
1950 DSSERR("ComplexIO not coming out of reset.\n");
1955 dsi_complexio_timings();
1958 The configuration of the DSI complex I/O (number of data lanes,
1959 position, differential order) should not be changed while
1960 DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. For the
1961 hardware to recognize a new configuration of the complex I/O (done
1962 in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to follow
1963 this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1, next
1964 reset the DSS.DSI_CTRL[0] IF_EN to 0, then set DSS.DSI_CLK_CTRL[20]
1965 LP_CLK_ENABLE to 1, and finally, set again the DSS.DSI_CTRL[0] IF_EN
1966 bit to 1. If the sequence is not followed, the DSi complex I/O
1967 configuration is undetermined.
1971 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
1975 DSSDBG("CIO init done\n");
1980 static void dsi_complexio_uninit(void)
1982 dsi_complexio_power(DSI_COMPLEXIO_POWER_OFF);
1985 static int _dsi_wait_reset(void)
1989 while (REG_GET(DSI_SYSSTATUS, 0, 0) == 0) {
1991 DSSERR("soft reset failed\n");
2000 static int _dsi_reset(void)
2003 REG_FLD_MOD(DSI_SYSCONFIG, 1, 1, 1);
2004 return _dsi_wait_reset();
2007 static void dsi_config_tx_fifo(enum fifo_size size1, enum fifo_size size2,
2008 enum fifo_size size3, enum fifo_size size4)
2014 dsi.vc[0].fifo_size = size1;
2015 dsi.vc[1].fifo_size = size2;
2016 dsi.vc[2].fifo_size = size3;
2017 dsi.vc[3].fifo_size = size4;
2019 for (i = 0; i < 4; i++) {
2021 int size = dsi.vc[i].fifo_size;
2023 if (add + size > 4) {
2024 DSSERR("Illegal FIFO configuration\n");
2028 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2030 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2034 dsi_write_reg(DSI_TX_FIFO_VC_SIZE, r);
2037 static void dsi_config_rx_fifo(enum fifo_size size1, enum fifo_size size2,
2038 enum fifo_size size3, enum fifo_size size4)
2044 dsi.vc[0].fifo_size = size1;
2045 dsi.vc[1].fifo_size = size2;
2046 dsi.vc[2].fifo_size = size3;
2047 dsi.vc[3].fifo_size = size4;
2049 for (i = 0; i < 4; i++) {
2051 int size = dsi.vc[i].fifo_size;
2053 if (add + size > 4) {
2054 DSSERR("Illegal FIFO configuration\n");
2058 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2060 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2064 dsi_write_reg(DSI_RX_FIFO_VC_SIZE, r);
2067 static int dsi_force_tx_stop_mode_io(void)
2071 r = dsi_read_reg(DSI_TIMING1);
2072 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2073 dsi_write_reg(DSI_TIMING1, r);
2075 if (wait_for_bit_change(DSI_TIMING1, 15, 0) != 0) {
2076 DSSERR("TX_STOP bit not going down\n");
2083 static bool dsi_vc_is_enabled(int channel)
2085 return REG_GET(DSI_VC_CTRL(channel), 0, 0);
2088 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2090 const int channel = dsi.update_channel;
2091 u8 bit = dsi.te_enabled ? 30 : 31;
2093 if (REG_GET(DSI_VC_TE(channel), bit, bit) == 0)
2094 complete((struct completion *)data);
2097 static int dsi_sync_vc_vp(int channel)
2102 DECLARE_COMPLETION_ONSTACK(completion);
2104 bit = dsi.te_enabled ? 30 : 31;
2106 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_vp,
2107 &completion, DSI_VC_IRQ_PACKET_SENT);
2111 /* Wait for completion only if TE_EN/TE_START is still set */
2112 if (REG_GET(DSI_VC_TE(channel), bit, bit)) {
2113 if (wait_for_completion_timeout(&completion,
2114 msecs_to_jiffies(10)) == 0) {
2115 DSSERR("Failed to complete previous frame transfer\n");
2121 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp,
2122 &completion, DSI_VC_IRQ_PACKET_SENT);
2126 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp, &completion,
2127 DSI_VC_IRQ_PACKET_SENT);
2132 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2134 const int channel = dsi.update_channel;
2136 if (REG_GET(DSI_VC_CTRL(channel), 5, 5) == 0)
2137 complete((struct completion *)data);
2140 static int dsi_sync_vc_l4(int channel)
2144 DECLARE_COMPLETION_ONSTACK(completion);
2146 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_l4,
2147 &completion, DSI_VC_IRQ_PACKET_SENT);
2151 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2152 if (REG_GET(DSI_VC_CTRL(channel), 5, 5)) {
2153 if (wait_for_completion_timeout(&completion,
2154 msecs_to_jiffies(10)) == 0) {
2155 DSSERR("Failed to complete previous l4 transfer\n");
2161 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2162 &completion, DSI_VC_IRQ_PACKET_SENT);
2166 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2167 &completion, DSI_VC_IRQ_PACKET_SENT);
2172 static int dsi_sync_vc(int channel)
2174 WARN_ON(!dsi_bus_is_locked());
2176 WARN_ON(in_interrupt());
2178 if (!dsi_vc_is_enabled(channel))
2181 switch (dsi.vc[channel].mode) {
2182 case DSI_VC_MODE_VP:
2183 return dsi_sync_vc_vp(channel);
2184 case DSI_VC_MODE_L4:
2185 return dsi_sync_vc_l4(channel);
2191 static int dsi_vc_enable(int channel, bool enable)
2193 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2196 enable = enable ? 1 : 0;
2198 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 0, 0);
2200 if (wait_for_bit_change(DSI_VC_CTRL(channel), 0, enable) != enable) {
2201 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2208 static void dsi_vc_initial_config(int channel)
2212 DSSDBGF("%d", channel);
2214 r = dsi_read_reg(DSI_VC_CTRL(channel));
2216 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2217 DSSERR("VC(%d) busy when trying to configure it!\n",
2220 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2221 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2222 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2223 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2224 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2225 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2226 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2227 if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH))
2228 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2230 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2231 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2233 dsi_write_reg(DSI_VC_CTRL(channel), r);
2236 static int dsi_vc_config_l4(int channel)
2238 if (dsi.vc[channel].mode == DSI_VC_MODE_L4)
2241 DSSDBGF("%d", channel);
2243 dsi_sync_vc(channel);
2245 dsi_vc_enable(channel, 0);
2248 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2249 DSSERR("vc(%d) busy when trying to config for L4\n", channel);
2253 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 1, 1); /* SOURCE, 0 = L4 */
2255 /* DCS_CMD_ENABLE */
2256 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2257 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 30, 30);
2259 dsi_vc_enable(channel, 1);
2261 dsi.vc[channel].mode = DSI_VC_MODE_L4;
2266 static int dsi_vc_config_vp(int channel)
2268 if (dsi.vc[channel].mode == DSI_VC_MODE_VP)
2271 DSSDBGF("%d", channel);
2273 dsi_sync_vc(channel);
2275 dsi_vc_enable(channel, 0);
2278 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2279 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2283 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 1, 1); /* SOURCE, 1 = video port */
2285 /* DCS_CMD_ENABLE */
2286 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2287 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 30, 30);
2289 dsi_vc_enable(channel, 1);
2291 dsi.vc[channel].mode = DSI_VC_MODE_VP;
2297 void omapdss_dsi_vc_enable_hs(int channel, bool enable)
2299 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2301 WARN_ON(!dsi_bus_is_locked());
2303 dsi_vc_enable(channel, 0);
2306 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 9, 9);
2308 dsi_vc_enable(channel, 1);
2311 dsi_force_tx_stop_mode_io();
2313 EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs);
2315 static void dsi_vc_flush_long_data(int channel)
2317 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2319 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2320 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2324 (val >> 24) & 0xff);
2328 static void dsi_show_rx_ack_with_err(u16 err)
2330 DSSERR("\tACK with ERROR (%#x):\n", err);
2332 DSSERR("\t\tSoT Error\n");
2334 DSSERR("\t\tSoT Sync Error\n");
2336 DSSERR("\t\tEoT Sync Error\n");
2338 DSSERR("\t\tEscape Mode Entry Command Error\n");
2340 DSSERR("\t\tLP Transmit Sync Error\n");
2342 DSSERR("\t\tHS Receive Timeout Error\n");
2344 DSSERR("\t\tFalse Control Error\n");
2346 DSSERR("\t\t(reserved7)\n");
2348 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2350 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2351 if (err & (1 << 10))
2352 DSSERR("\t\tChecksum Error\n");
2353 if (err & (1 << 11))
2354 DSSERR("\t\tData type not recognized\n");
2355 if (err & (1 << 12))
2356 DSSERR("\t\tInvalid VC ID\n");
2357 if (err & (1 << 13))
2358 DSSERR("\t\tInvalid Transmission Length\n");
2359 if (err & (1 << 14))
2360 DSSERR("\t\t(reserved14)\n");
2361 if (err & (1 << 15))
2362 DSSERR("\t\tDSI Protocol Violation\n");
2365 static u16 dsi_vc_flush_receive_data(int channel)
2367 /* RX_FIFO_NOT_EMPTY */
2368 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2371 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2372 DSSERR("\trawval %#08x\n", val);
2373 dt = FLD_GET(val, 5, 0);
2374 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2375 u16 err = FLD_GET(val, 23, 8);
2376 dsi_show_rx_ack_with_err(err);
2377 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2378 DSSERR("\tDCS short response, 1 byte: %#x\n",
2379 FLD_GET(val, 23, 8));
2380 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2381 DSSERR("\tDCS short response, 2 byte: %#x\n",
2382 FLD_GET(val, 23, 8));
2383 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2384 DSSERR("\tDCS long response, len %d\n",
2385 FLD_GET(val, 23, 8));
2386 dsi_vc_flush_long_data(channel);
2388 DSSERR("\tunknown datatype 0x%02x\n", dt);
2394 static int dsi_vc_send_bta(int channel)
2396 if (dsi.debug_write || dsi.debug_read)
2397 DSSDBG("dsi_vc_send_bta %d\n", channel);
2399 WARN_ON(!dsi_bus_is_locked());
2401 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2402 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2403 dsi_vc_flush_receive_data(channel);
2406 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2411 int dsi_vc_send_bta_sync(int channel)
2413 DECLARE_COMPLETION_ONSTACK(completion);
2417 r = dsi_register_isr_vc(channel, dsi_completion_handler,
2418 &completion, DSI_VC_IRQ_BTA);
2422 r = dsi_register_isr(dsi_completion_handler, &completion,
2423 DSI_IRQ_ERROR_MASK);
2427 r = dsi_vc_send_bta(channel);
2431 if (wait_for_completion_timeout(&completion,
2432 msecs_to_jiffies(500)) == 0) {
2433 DSSERR("Failed to receive BTA\n");
2438 err = dsi_get_errors();
2440 DSSERR("Error while sending BTA: %x\n", err);
2445 dsi_unregister_isr(dsi_completion_handler, &completion,
2446 DSI_IRQ_ERROR_MASK);
2448 dsi_unregister_isr_vc(channel, dsi_completion_handler,
2449 &completion, DSI_VC_IRQ_BTA);
2453 EXPORT_SYMBOL(dsi_vc_send_bta_sync);
2455 static inline void dsi_vc_write_long_header(int channel, u8 data_type,
2461 WARN_ON(!dsi_bus_is_locked());
2463 data_id = data_type | dsi.vc[channel].vc_id << 6;
2465 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2466 FLD_VAL(ecc, 31, 24);
2468 dsi_write_reg(DSI_VC_LONG_PACKET_HEADER(channel), val);
2471 static inline void dsi_vc_write_long_payload(int channel,
2472 u8 b1, u8 b2, u8 b3, u8 b4)
2476 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2478 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2479 b1, b2, b3, b4, val); */
2481 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2484 static int dsi_vc_send_long(int channel, u8 data_type, u8 *data, u16 len,
2493 if (dsi.debug_write)
2494 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2497 if (dsi.vc[channel].fifo_size * 32 * 4 < len + 4) {
2498 DSSERR("unable to send long packet: packet too long.\n");
2502 dsi_vc_config_l4(channel);
2504 dsi_vc_write_long_header(channel, data_type, len, ecc);
2507 for (i = 0; i < len >> 2; i++) {
2508 if (dsi.debug_write)
2509 DSSDBG("\tsending full packet %d\n", i);
2516 dsi_vc_write_long_payload(channel, b1, b2, b3, b4);
2521 b1 = 0; b2 = 0; b3 = 0;
2523 if (dsi.debug_write)
2524 DSSDBG("\tsending remainder bytes %d\n", i);
2541 dsi_vc_write_long_payload(channel, b1, b2, b3, 0);
2547 static int dsi_vc_send_short(int channel, u8 data_type, u16 data, u8 ecc)
2552 WARN_ON(!dsi_bus_is_locked());
2554 if (dsi.debug_write)
2555 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2557 data_type, data & 0xff, (data >> 8) & 0xff);
2559 dsi_vc_config_l4(channel);
2561 if (FLD_GET(dsi_read_reg(DSI_VC_CTRL(channel)), 16, 16)) {
2562 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2566 data_id = data_type | dsi.vc[channel].vc_id << 6;
2568 r = (data_id << 0) | (data << 8) | (ecc << 24);
2570 dsi_write_reg(DSI_VC_SHORT_PACKET_HEADER(channel), r);
2575 int dsi_vc_send_null(int channel)
2577 u8 nullpkg[] = {0, 0, 0, 0};
2578 return dsi_vc_send_long(channel, DSI_DT_NULL_PACKET, nullpkg, 4, 0);
2580 EXPORT_SYMBOL(dsi_vc_send_null);
2582 int dsi_vc_dcs_write_nosync(int channel, u8 *data, int len)
2589 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_0,
2591 } else if (len == 2) {
2592 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_1,
2593 data[0] | (data[1] << 8), 0);
2595 /* 0x39 = DCS Long Write */
2596 r = dsi_vc_send_long(channel, DSI_DT_DCS_LONG_WRITE,
2602 EXPORT_SYMBOL(dsi_vc_dcs_write_nosync);
2604 int dsi_vc_dcs_write(int channel, u8 *data, int len)
2608 r = dsi_vc_dcs_write_nosync(channel, data, len);
2612 r = dsi_vc_send_bta_sync(channel);
2616 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2617 DSSERR("rx fifo not empty after write, dumping data:\n");
2618 dsi_vc_flush_receive_data(channel);
2625 DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n",
2626 channel, data[0], len);
2629 EXPORT_SYMBOL(dsi_vc_dcs_write);
2631 int dsi_vc_dcs_write_0(int channel, u8 dcs_cmd)
2633 return dsi_vc_dcs_write(channel, &dcs_cmd, 1);
2635 EXPORT_SYMBOL(dsi_vc_dcs_write_0);
2637 int dsi_vc_dcs_write_1(int channel, u8 dcs_cmd, u8 param)
2642 return dsi_vc_dcs_write(channel, buf, 2);
2644 EXPORT_SYMBOL(dsi_vc_dcs_write_1);
2646 int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen)
2653 DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd);
2655 r = dsi_vc_send_short(channel, DSI_DT_DCS_READ, dcs_cmd, 0);
2659 r = dsi_vc_send_bta_sync(channel);
2663 /* RX_FIFO_NOT_EMPTY */
2664 if (REG_GET(DSI_VC_CTRL(channel), 20, 20) == 0) {
2665 DSSERR("RX fifo empty when trying to read.\n");
2670 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2672 DSSDBG("\theader: %08x\n", val);
2673 dt = FLD_GET(val, 5, 0);
2674 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2675 u16 err = FLD_GET(val, 23, 8);
2676 dsi_show_rx_ack_with_err(err);
2680 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2681 u8 data = FLD_GET(val, 15, 8);
2683 DSSDBG("\tDCS short response, 1 byte: %02x\n", data);
2693 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2694 u16 data = FLD_GET(val, 23, 8);
2696 DSSDBG("\tDCS short response, 2 byte: %04x\n", data);
2703 buf[0] = data & 0xff;
2704 buf[1] = (data >> 8) & 0xff;
2707 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2709 int len = FLD_GET(val, 23, 8);
2711 DSSDBG("\tDCS long response, len %d\n", len);
2718 /* two byte checksum ends the packet, not included in len */
2719 for (w = 0; w < len + 2;) {
2721 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2723 DSSDBG("\t\t%02x %02x %02x %02x\n",
2727 (val >> 24) & 0xff);
2729 for (b = 0; b < 4; ++b) {
2731 buf[w] = (val >> (b * 8)) & 0xff;
2732 /* we discard the 2 byte checksum */
2739 DSSERR("\tunknown datatype 0x%02x\n", dt);
2746 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n",
2751 EXPORT_SYMBOL(dsi_vc_dcs_read);
2753 int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data)
2757 r = dsi_vc_dcs_read(channel, dcs_cmd, data, 1);
2767 EXPORT_SYMBOL(dsi_vc_dcs_read_1);
2769 int dsi_vc_dcs_read_2(int channel, u8 dcs_cmd, u8 *data1, u8 *data2)
2774 r = dsi_vc_dcs_read(channel, dcs_cmd, buf, 2);
2787 EXPORT_SYMBOL(dsi_vc_dcs_read_2);
2789 int dsi_vc_set_max_rx_packet_size(int channel, u16 len)
2791 return dsi_vc_send_short(channel, DSI_DT_SET_MAX_RET_PKG_SIZE,
2794 EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size);
2796 static void dsi_set_lp_rx_timeout(unsigned ticks, bool x4, bool x16)
2799 unsigned long total_ticks;
2802 BUG_ON(ticks > 0x1fff);
2804 /* ticks in DSI_FCK */
2805 fck = dsi_fclk_rate();
2807 r = dsi_read_reg(DSI_TIMING2);
2808 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
2809 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
2810 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
2811 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
2812 dsi_write_reg(DSI_TIMING2, r);
2814 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2816 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
2818 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2819 (total_ticks * 1000) / (fck / 1000 / 1000));
2822 static void dsi_set_ta_timeout(unsigned ticks, bool x8, bool x16)
2825 unsigned long total_ticks;
2828 BUG_ON(ticks > 0x1fff);
2830 /* ticks in DSI_FCK */
2831 fck = dsi_fclk_rate();
2833 r = dsi_read_reg(DSI_TIMING1);
2834 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
2835 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
2836 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
2837 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
2838 dsi_write_reg(DSI_TIMING1, r);
2840 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
2842 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
2844 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
2845 (total_ticks * 1000) / (fck / 1000 / 1000));
2848 static void dsi_set_stop_state_counter(unsigned ticks, bool x4, bool x16)
2851 unsigned long total_ticks;
2854 BUG_ON(ticks > 0x1fff);
2856 /* ticks in DSI_FCK */
2857 fck = dsi_fclk_rate();
2859 r = dsi_read_reg(DSI_TIMING1);
2860 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2861 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
2862 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
2863 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
2864 dsi_write_reg(DSI_TIMING1, r);
2866 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2868 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
2870 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2871 (total_ticks * 1000) / (fck / 1000 / 1000));
2874 static void dsi_set_hs_tx_timeout(unsigned ticks, bool x4, bool x16)
2877 unsigned long total_ticks;
2880 BUG_ON(ticks > 0x1fff);
2882 /* ticks in TxByteClkHS */
2883 fck = dsi_get_txbyteclkhs();
2885 r = dsi_read_reg(DSI_TIMING2);
2886 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
2887 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
2888 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
2889 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
2890 dsi_write_reg(DSI_TIMING2, r);
2892 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
2894 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
2896 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
2897 (total_ticks * 1000) / (fck / 1000 / 1000));
2899 static int dsi_proto_config(struct omap_dss_device *dssdev)
2904 dsi_config_tx_fifo(DSI_FIFO_SIZE_32,
2909 dsi_config_rx_fifo(DSI_FIFO_SIZE_32,
2914 /* XXX what values for the timeouts? */
2915 dsi_set_stop_state_counter(0x1000, false, false);
2916 dsi_set_ta_timeout(0x1fff, true, true);
2917 dsi_set_lp_rx_timeout(0x1fff, true, true);
2918 dsi_set_hs_tx_timeout(0x1fff, true, true);
2920 switch (dssdev->ctrl.pixel_size) {
2934 r = dsi_read_reg(DSI_CTRL);
2935 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
2936 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
2937 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
2938 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
2939 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
2940 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
2941 r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */
2942 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
2943 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
2944 if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
2945 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
2946 /* DCS_CMD_CODE, 1=start, 0=continue */
2947 r = FLD_MOD(r, 0, 25, 25);
2950 dsi_write_reg(DSI_CTRL, r);
2952 dsi_vc_initial_config(0);
2953 dsi_vc_initial_config(1);
2954 dsi_vc_initial_config(2);
2955 dsi_vc_initial_config(3);
2960 static void dsi_proto_timings(struct omap_dss_device *dssdev)
2962 unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail;
2963 unsigned tclk_pre, tclk_post;
2964 unsigned ths_prepare, ths_prepare_ths_zero, ths_zero;
2965 unsigned ths_trail, ths_exit;
2966 unsigned ddr_clk_pre, ddr_clk_post;
2967 unsigned enter_hs_mode_lat, exit_hs_mode_lat;
2971 r = dsi_read_reg(DSI_DSIPHY_CFG0);
2972 ths_prepare = FLD_GET(r, 31, 24);
2973 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
2974 ths_zero = ths_prepare_ths_zero - ths_prepare;
2975 ths_trail = FLD_GET(r, 15, 8);
2976 ths_exit = FLD_GET(r, 7, 0);
2978 r = dsi_read_reg(DSI_DSIPHY_CFG1);
2979 tlpx = FLD_GET(r, 22, 16) * 2;
2980 tclk_trail = FLD_GET(r, 15, 8);
2981 tclk_zero = FLD_GET(r, 7, 0);
2983 r = dsi_read_reg(DSI_DSIPHY_CFG2);
2984 tclk_prepare = FLD_GET(r, 7, 0);
2988 /* min 60ns + 52*UI */
2989 tclk_post = ns2ddr(60) + 26;
2991 /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */
2992 if (dssdev->phy.dsi.data1_lane != 0 &&
2993 dssdev->phy.dsi.data2_lane != 0)
2998 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3000 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3002 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3003 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
3005 r = dsi_read_reg(DSI_CLK_TIMING);
3006 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
3007 r = FLD_MOD(r, ddr_clk_post, 7, 0);
3008 dsi_write_reg(DSI_CLK_TIMING, r);
3010 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
3014 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
3015 DIV_ROUND_UP(ths_prepare, 4) +
3016 DIV_ROUND_UP(ths_zero + 3, 4);
3018 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
3020 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
3021 FLD_VAL(exit_hs_mode_lat, 15, 0);
3022 dsi_write_reg(DSI_VM_TIMING7, r);
3024 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
3025 enter_hs_mode_lat, exit_hs_mode_lat);
3029 #define DSI_DECL_VARS \
3030 int __dsi_cb = 0; u32 __dsi_cv = 0;
3032 #define DSI_FLUSH(ch) \
3033 if (__dsi_cb > 0) { \
3034 /*DSSDBG("sending long packet %#010x\n", __dsi_cv);*/ \
3035 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(ch), __dsi_cv); \
3036 __dsi_cb = __dsi_cv = 0; \
3039 #define DSI_PUSH(ch, data) \
3041 __dsi_cv |= (data) << (__dsi_cb * 8); \
3042 /*DSSDBG("cv = %#010x, cb = %d\n", __dsi_cv, __dsi_cb);*/ \
3043 if (++__dsi_cb > 3) \
3047 static int dsi_update_screen_l4(struct omap_dss_device *dssdev,
3048 int x, int y, int w, int h)
3050 /* Note: supports only 24bit colors in 32bit container */
3052 int fifo_stalls = 0;
3053 int max_dsi_packet_size;
3054 int max_data_per_packet;
3055 int max_pixels_per_packet;
3057 int bytespp = dssdev->ctrl.pixel_size / 8;
3063 struct omap_overlay *ovl;
3067 DSSDBG("dsi_update_screen_l4 (%d,%d %dx%d)\n",
3070 ovl = dssdev->manager->overlays[0];
3072 if (ovl->info.color_mode != OMAP_DSS_COLOR_RGB24U)
3075 if (dssdev->ctrl.pixel_size != 24)
3078 scr_width = ovl->info.screen_width;
3079 data = ovl->info.vaddr;
3081 start_offset = scr_width * y + x;
3082 horiz_inc = scr_width - w;
3085 /* We need header(4) + DCSCMD(1) + pixels(numpix*bytespp) bytes
3088 /* When using CPU, max long packet size is TX buffer size */
3089 max_dsi_packet_size = dsi.vc[0].fifo_size * 32 * 4;
3091 /* we seem to get better perf if we divide the tx fifo to half,
3092 and while the other half is being sent, we fill the other half
3093 max_dsi_packet_size /= 2; */
3095 max_data_per_packet = max_dsi_packet_size - 4 - 1;
3097 max_pixels_per_packet = max_data_per_packet / bytespp;
3099 DSSDBG("max_pixels_per_packet %d\n", max_pixels_per_packet);
3101 pixels_left = w * h;
3103 DSSDBG("total pixels %d\n", pixels_left);
3105 data += start_offset;
3107 while (pixels_left > 0) {
3108 /* 0x2c = write_memory_start */
3109 /* 0x3c = write_memory_continue */
3110 u8 dcs_cmd = first ? 0x2c : 0x3c;
3116 /* using fifo not empty */
3117 /* TX_FIFO_NOT_EMPTY */
3118 while (FLD_GET(dsi_read_reg(DSI_VC_CTRL(0)), 5, 5)) {
3120 if (fifo_stalls > 0xfffff) {
3121 DSSERR("fifo stalls overflow, pixels left %d\n",
3129 /* using fifo emptiness */
3130 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 <
3131 max_dsi_packet_size) {
3133 if (fifo_stalls > 0xfffff) {
3134 DSSERR("fifo stalls overflow, pixels left %d\n",
3141 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 == 0) {
3143 if (fifo_stalls > 0xfffff) {
3144 DSSERR("fifo stalls overflow, pixels left %d\n",
3151 pixels = min(max_pixels_per_packet, pixels_left);
3153 pixels_left -= pixels;
3155 dsi_vc_write_long_header(0, DSI_DT_DCS_LONG_WRITE,
3156 1 + pixels * bytespp, 0);
3158 DSI_PUSH(0, dcs_cmd);
3160 while (pixels-- > 0) {
3161 u32 pix = __raw_readl(data++);
3163 DSI_PUSH(0, (pix >> 16) & 0xff);
3164 DSI_PUSH(0, (pix >> 8) & 0xff);
3165 DSI_PUSH(0, (pix >> 0) & 0xff);
3168 if (current_x == x+w) {
3180 static void dsi_update_screen_dispc(struct omap_dss_device *dssdev,
3181 u16 x, u16 y, u16 w, u16 h)
3187 unsigned packet_payload;
3188 unsigned packet_len;
3191 const unsigned channel = dsi.update_channel;
3192 /* line buffer is 1024 x 24bits */
3193 /* XXX: for some reason using full buffer size causes considerable TX
3194 * slowdown with update sizes that fill the whole buffer */
3195 const unsigned line_buf_size = 1023 * 3;
3197 DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n",
3200 dsi_vc_config_vp(channel);
3202 bytespp = dssdev->ctrl.pixel_size / 8;
3203 bytespl = w * bytespp;
3204 bytespf = bytespl * h;
3206 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3207 * number of lines in a packet. See errata about VP_CLK_RATIO */
3209 if (bytespf < line_buf_size)
3210 packet_payload = bytespf;
3212 packet_payload = (line_buf_size) / bytespl * bytespl;
3214 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3215 total_len = (bytespf / packet_payload) * packet_len;
3217 if (bytespf % packet_payload)
3218 total_len += (bytespf % packet_payload) + 1;
3220 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3221 dsi_write_reg(DSI_VC_TE(channel), l);
3223 dsi_vc_write_long_header(channel, DSI_DT_DCS_LONG_WRITE, packet_len, 0);
3226 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3228 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3229 dsi_write_reg(DSI_VC_TE(channel), l);
3231 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3232 * because DSS interrupts are not capable of waking up the CPU and the
3233 * framedone interrupt could be delayed for quite a long time. I think
3234 * the same goes for any DSS interrupts, but for some reason I have not
3235 * seen the problem anywhere else than here.
3237 dispc_disable_sidle();
3239 dsi_perf_mark_start();
3241 r = queue_delayed_work(dsi.workqueue, &dsi.framedone_timeout_work,
3242 msecs_to_jiffies(250));
3245 dss_start_update(dssdev);
3247 if (dsi.te_enabled) {
3248 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3249 * for TE is longer than the timer allows */
3250 REG_FLD_MOD(DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3252 dsi_vc_send_bta(channel);
3254 #ifdef DSI_CATCH_MISSING_TE
3255 mod_timer(&dsi.te_timer, jiffies + msecs_to_jiffies(250));
3260 #ifdef DSI_CATCH_MISSING_TE
3261 static void dsi_te_timeout(unsigned long arg)
3263 DSSERR("TE not received for 250ms!\n");
3267 static void dsi_handle_framedone(int error)
3269 /* SIDLEMODE back to smart-idle */
3270 dispc_enable_sidle();
3272 if (dsi.te_enabled) {
3273 /* enable LP_RX_TO again after the TE */
3274 REG_FLD_MOD(DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
3277 dsi.framedone_callback(error, dsi.framedone_data);
3280 dsi_perf_show("DISPC");
3283 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
3285 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
3286 * 250ms which would conflict with this timeout work. What should be
3287 * done is first cancel the transfer on the HW, and then cancel the
3288 * possibly scheduled framedone work. However, cancelling the transfer
3289 * on the HW is buggy, and would probably require resetting the whole
3292 DSSERR("Framedone not received for 250ms!\n");
3294 dsi_handle_framedone(-ETIMEDOUT);
3297 static void dsi_framedone_irq_callback(void *data, u32 mask)
3299 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
3300 * turns itself off. However, DSI still has the pixels in its buffers,
3301 * and is sending the data.
3304 __cancel_delayed_work(&dsi.framedone_timeout_work);
3306 dsi_handle_framedone(0);
3308 #ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
3309 dispc_fake_vsync_irq();
3313 int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
3314 u16 *x, u16 *y, u16 *w, u16 *h,
3315 bool enlarge_update_area)
3319 dssdev->driver->get_resolution(dssdev, &dw, &dh);
3321 if (*x > dw || *y > dh)
3333 if (*w == 0 || *h == 0)
3336 dsi_perf_mark_setup();
3338 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3339 dss_setup_partial_planes(dssdev, x, y, w, h,
3340 enlarge_update_area);
3341 dispc_set_lcd_size(dssdev->manager->id, *w, *h);
3346 EXPORT_SYMBOL(omap_dsi_prepare_update);
3348 int omap_dsi_update(struct omap_dss_device *dssdev,
3350 u16 x, u16 y, u16 w, u16 h,
3351 void (*callback)(int, void *), void *data)
3353 dsi.update_channel = channel;
3355 /* OMAP DSS cannot send updates of odd widths.
3356 * omap_dsi_prepare_update() makes the widths even, but add a BUG_ON
3357 * here to make sure we catch erroneous updates. Otherwise we'll only
3358 * see rather obscure HW error happening, as DSS halts. */
3361 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3362 dsi.framedone_callback = callback;
3363 dsi.framedone_data = data;
3365 dsi.update_region.x = x;
3366 dsi.update_region.y = y;
3367 dsi.update_region.w = w;
3368 dsi.update_region.h = h;
3369 dsi.update_region.device = dssdev;
3371 dsi_update_screen_dispc(dssdev, x, y, w, h);
3375 r = dsi_update_screen_l4(dssdev, x, y, w, h);
3379 dsi_perf_show("L4");
3385 EXPORT_SYMBOL(omap_dsi_update);
3389 static int dsi_display_init_dispc(struct omap_dss_device *dssdev)
3393 r = omap_dispc_register_isr(dsi_framedone_irq_callback, NULL,
3394 DISPC_IRQ_FRAMEDONE);
3396 DSSERR("can't get FRAMEDONE irq\n");
3400 dispc_set_lcd_display_type(dssdev->manager->id,
3401 OMAP_DSS_LCD_DISPLAY_TFT);
3403 dispc_set_parallel_interface_mode(dssdev->manager->id,
3404 OMAP_DSS_PARALLELMODE_DSI);
3405 dispc_enable_fifohandcheck(dssdev->manager->id, 1);
3407 dispc_set_tft_data_lines(dssdev->manager->id, dssdev->ctrl.pixel_size);
3410 struct omap_video_timings timings = {
3419 dispc_set_lcd_timings(dssdev->manager->id, &timings);
3425 static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev)
3427 omap_dispc_unregister_isr(dsi_framedone_irq_callback, NULL,
3428 DISPC_IRQ_FRAMEDONE);
3431 static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev)
3433 struct dsi_clock_info cinfo;
3436 /* we always use DSS_CLK_SYSCK as input clock */
3437 cinfo.use_sys_clk = true;
3438 cinfo.regn = dssdev->clocks.dsi.regn;
3439 cinfo.regm = dssdev->clocks.dsi.regm;
3440 cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc;
3441 cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi;
3442 r = dsi_calc_clock_rates(dssdev, &cinfo);
3444 DSSERR("Failed to calc dsi clocks\n");
3448 r = dsi_pll_set_clock_div(&cinfo);
3450 DSSERR("Failed to set dsi clocks\n");
3457 static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev)
3459 struct dispc_clock_info dispc_cinfo;
3461 unsigned long long fck;
3463 fck = dsi_get_pll_hsdiv_dispc_rate();
3465 dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div;
3466 dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div;
3468 r = dispc_calc_clock_rates(fck, &dispc_cinfo);
3470 DSSERR("Failed to calc dispc clocks\n");
3474 r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
3476 DSSERR("Failed to set dispc clocks\n");
3483 static int dsi_display_init_dsi(struct omap_dss_device *dssdev)
3487 /* The SCPClk is required for both PLL and CIO registers on OMAP4 */
3488 /* CIO_CLK_ICG, enable L3 clk to CIO */
3489 REG_FLD_MOD(DSI_CLK_CTRL, 1, 14, 14);
3491 _dsi_print_reset_status();
3493 r = dsi_pll_init(dssdev, true, true);
3497 r = dsi_configure_dsi_clocks(dssdev);
3501 dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
3502 dss_select_dsi_clk_source(dssdev->clocks.dsi.dsi_fclk_src);
3503 dss_select_lcd_clk_source(dssdev->manager->id,
3504 dssdev->clocks.dispc.channel.lcd_clk_src);
3508 r = dsi_configure_dispc_clocks(dssdev);
3512 r = dsi_complexio_init(dssdev);
3516 _dsi_print_reset_status();
3518 dsi_proto_timings(dssdev);
3519 dsi_set_lp_clk_divisor(dssdev);
3522 _dsi_print_reset_status();
3524 r = dsi_proto_config(dssdev);
3528 /* enable interface */
3529 dsi_vc_enable(0, 1);
3530 dsi_vc_enable(1, 1);
3531 dsi_vc_enable(2, 1);
3532 dsi_vc_enable(3, 1);
3534 dsi_force_tx_stop_mode_io();
3538 dsi_complexio_uninit();
3540 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3541 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3548 static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev)
3550 /* disable interface */
3552 dsi_vc_enable(0, 0);
3553 dsi_vc_enable(1, 0);
3554 dsi_vc_enable(2, 0);
3555 dsi_vc_enable(3, 0);
3557 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3558 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3559 dsi_complexio_uninit();
3563 static int dsi_core_init(void)
3566 REG_FLD_MOD(DSI_SYSCONFIG, 1, 0, 0);
3569 REG_FLD_MOD(DSI_SYSCONFIG, 1, 2, 2);
3571 /* SIDLEMODE smart-idle */
3572 REG_FLD_MOD(DSI_SYSCONFIG, 2, 4, 3);
3574 _dsi_initialize_irq();
3579 int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
3583 DSSDBG("dsi_display_enable\n");
3585 WARN_ON(!dsi_bus_is_locked());
3587 mutex_lock(&dsi.lock);
3589 r = omap_dss_start_device(dssdev);
3591 DSSERR("failed to start device\n");
3596 dsi_enable_pll_clock(1);
3604 r = dsi_display_init_dispc(dssdev);
3608 r = dsi_display_init_dsi(dssdev);
3612 mutex_unlock(&dsi.lock);
3617 dsi_display_uninit_dispc(dssdev);
3620 dsi_enable_pll_clock(0);
3621 omap_dss_stop_device(dssdev);
3623 mutex_unlock(&dsi.lock);
3624 DSSDBG("dsi_display_enable FAILED\n");
3627 EXPORT_SYMBOL(omapdss_dsi_display_enable);
3629 void omapdss_dsi_display_disable(struct omap_dss_device *dssdev)
3631 DSSDBG("dsi_display_disable\n");
3633 WARN_ON(!dsi_bus_is_locked());
3635 mutex_lock(&dsi.lock);
3637 dsi_display_uninit_dispc(dssdev);
3639 dsi_display_uninit_dsi(dssdev);
3642 dsi_enable_pll_clock(0);
3644 omap_dss_stop_device(dssdev);
3646 mutex_unlock(&dsi.lock);
3648 EXPORT_SYMBOL(omapdss_dsi_display_disable);
3650 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
3652 dsi.te_enabled = enable;
3655 EXPORT_SYMBOL(omapdss_dsi_enable_te);
3657 void dsi_get_overlay_fifo_thresholds(enum omap_plane plane,
3658 u32 fifo_size, enum omap_burst_size *burst_size,
3659 u32 *fifo_low, u32 *fifo_high)
3661 unsigned burst_size_bytes;
3663 *burst_size = OMAP_DSS_BURST_16x32;
3664 burst_size_bytes = 16 * 32 / 8;
3666 *fifo_high = fifo_size - burst_size_bytes;
3667 *fifo_low = fifo_size - burst_size_bytes * 2;
3670 int dsi_init_display(struct omap_dss_device *dssdev)
3672 DSSDBG("DSI init\n");
3674 /* XXX these should be figured out dynamically */
3675 dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
3676 OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
3678 if (dsi.vdds_dsi_reg == NULL) {
3679 struct regulator *vdds_dsi;
3681 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
3683 if (IS_ERR(vdds_dsi)) {
3684 DSSERR("can't get VDDS_DSI regulator\n");
3685 return PTR_ERR(vdds_dsi);
3688 dsi.vdds_dsi_reg = vdds_dsi;
3694 int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
3698 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
3699 if (!dsi.vc[i].dssdev) {
3700 dsi.vc[i].dssdev = dssdev;
3706 DSSERR("cannot get VC for display %s", dssdev->name);
3709 EXPORT_SYMBOL(omap_dsi_request_vc);
3711 int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
3713 if (vc_id < 0 || vc_id > 3) {
3714 DSSERR("VC ID out of range\n");
3718 if (channel < 0 || channel > 3) {
3719 DSSERR("Virtual Channel out of range\n");
3723 if (dsi.vc[channel].dssdev != dssdev) {
3724 DSSERR("Virtual Channel not allocated to display %s\n",
3729 dsi.vc[channel].vc_id = vc_id;
3733 EXPORT_SYMBOL(omap_dsi_set_vc_id);
3735 void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel)
3737 if ((channel >= 0 && channel <= 3) &&
3738 dsi.vc[channel].dssdev == dssdev) {
3739 dsi.vc[channel].dssdev = NULL;
3740 dsi.vc[channel].vc_id = 0;
3743 EXPORT_SYMBOL(omap_dsi_release_vc);
3745 void dsi_wait_pll_hsdiv_dispc_active(void)
3747 if (wait_for_bit_change(DSI_PLL_STATUS, 7, 1) != 1)
3748 DSSERR("%s (%s) not active\n",
3749 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
3750 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC));
3753 void dsi_wait_pll_hsdiv_dsi_active(void)
3755 if (wait_for_bit_change(DSI_PLL_STATUS, 8, 1) != 1)
3756 DSSERR("%s (%s) not active\n",
3757 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
3758 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI));
3761 static void dsi_calc_clock_param_ranges(void)
3763 dsi.regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN);
3764 dsi.regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM);
3765 dsi.regm_dispc_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC);
3766 dsi.regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI);
3767 dsi.fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT);
3768 dsi.fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT);
3769 dsi.lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV);
3772 static int dsi_init(struct platform_device *pdev)
3776 struct resource *dsi_mem;
3778 spin_lock_init(&dsi.irq_lock);
3779 spin_lock_init(&dsi.errors_lock);
3782 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
3783 spin_lock_init(&dsi.irq_stats_lock);
3784 dsi.irq_stats.last_reset = jiffies;
3787 mutex_init(&dsi.lock);
3788 sema_init(&dsi.bus_lock, 1);
3790 dsi.workqueue = create_singlethread_workqueue("dsi");
3791 if (dsi.workqueue == NULL)
3794 INIT_DELAYED_WORK_DEFERRABLE(&dsi.framedone_timeout_work,
3795 dsi_framedone_timeout_work_callback);
3797 #ifdef DSI_CATCH_MISSING_TE
3798 init_timer(&dsi.te_timer);
3799 dsi.te_timer.function = dsi_te_timeout;
3800 dsi.te_timer.data = 0;
3802 dsi_mem = platform_get_resource(dsi.pdev, IORESOURCE_MEM, 0);
3804 DSSERR("can't get IORESOURCE_MEM DSI\n");
3808 dsi.base = ioremap(dsi_mem->start, resource_size(dsi_mem));
3810 DSSERR("can't ioremap DSI\n");
3814 dsi.irq = platform_get_irq(dsi.pdev, 0);
3816 DSSERR("platform_get_irq failed\n");
3821 r = request_irq(dsi.irq, omap_dsi_irq_handler, IRQF_SHARED,
3822 "OMAP DSI1", dsi.pdev);
3824 DSSERR("request_irq failed\n");
3828 /* DSI VCs initialization */
3829 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
3830 dsi.vc[i].mode = DSI_VC_MODE_L4;
3831 dsi.vc[i].dssdev = NULL;
3832 dsi.vc[i].vc_id = 0;
3835 dsi_calc_clock_param_ranges();
3839 rev = dsi_read_reg(DSI_REVISION);
3840 dev_dbg(&pdev->dev, "OMAP DSI rev %d.%d\n",
3841 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
3849 destroy_workqueue(dsi.workqueue);
3853 static void dsi_exit(void)
3855 if (dsi.vdds_dsi_reg != NULL) {
3856 regulator_put(dsi.vdds_dsi_reg);
3857 dsi.vdds_dsi_reg = NULL;
3860 free_irq(dsi.irq, dsi.pdev);
3863 destroy_workqueue(dsi.workqueue);
3865 DSSDBG("omap_dsi_exit\n");
3868 /* DSI1 HW IP initialisation */
3869 static int omap_dsi1hw_probe(struct platform_device *pdev)
3875 DSSERR("Failed to initialize DSI\n");
3882 static int omap_dsi1hw_remove(struct platform_device *pdev)
3888 static struct platform_driver omap_dsi1hw_driver = {
3889 .probe = omap_dsi1hw_probe,
3890 .remove = omap_dsi1hw_remove,
3892 .name = "omapdss_dsi1",
3893 .owner = THIS_MODULE,
3897 int dsi_init_platform_driver(void)
3899 return platform_driver_register(&omap_dsi1hw_driver);
3902 void dsi_uninit_platform_driver(void)
3904 return platform_driver_unregister(&omap_dsi1hw_driver);