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>
36 #include <linux/sched.h>
38 #include <video/omapdss.h>
39 #include <plat/clock.h>
42 #include "dss_features.h"
44 /*#define VERBOSE_IRQ*/
45 #define DSI_CATCH_MISSING_TE
47 struct dsi_reg { u16 idx; };
49 #define DSI_REG(idx) ((const struct dsi_reg) { idx })
51 #define DSI_SZ_REGS SZ_1K
52 /* DSI Protocol Engine */
54 #define DSI_REVISION DSI_REG(0x0000)
55 #define DSI_SYSCONFIG DSI_REG(0x0010)
56 #define DSI_SYSSTATUS DSI_REG(0x0014)
57 #define DSI_IRQSTATUS DSI_REG(0x0018)
58 #define DSI_IRQENABLE DSI_REG(0x001C)
59 #define DSI_CTRL DSI_REG(0x0040)
60 #define DSI_COMPLEXIO_CFG1 DSI_REG(0x0048)
61 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(0x004C)
62 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(0x0050)
63 #define DSI_CLK_CTRL DSI_REG(0x0054)
64 #define DSI_TIMING1 DSI_REG(0x0058)
65 #define DSI_TIMING2 DSI_REG(0x005C)
66 #define DSI_VM_TIMING1 DSI_REG(0x0060)
67 #define DSI_VM_TIMING2 DSI_REG(0x0064)
68 #define DSI_VM_TIMING3 DSI_REG(0x0068)
69 #define DSI_CLK_TIMING DSI_REG(0x006C)
70 #define DSI_TX_FIFO_VC_SIZE DSI_REG(0x0070)
71 #define DSI_RX_FIFO_VC_SIZE DSI_REG(0x0074)
72 #define DSI_COMPLEXIO_CFG2 DSI_REG(0x0078)
73 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(0x007C)
74 #define DSI_VM_TIMING4 DSI_REG(0x0080)
75 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(0x0084)
76 #define DSI_VM_TIMING5 DSI_REG(0x0088)
77 #define DSI_VM_TIMING6 DSI_REG(0x008C)
78 #define DSI_VM_TIMING7 DSI_REG(0x0090)
79 #define DSI_STOPCLK_TIMING DSI_REG(0x0094)
80 #define DSI_VC_CTRL(n) DSI_REG(0x0100 + (n * 0x20))
81 #define DSI_VC_TE(n) DSI_REG(0x0104 + (n * 0x20))
82 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(0x0108 + (n * 0x20))
83 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(0x010C + (n * 0x20))
84 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(0x0110 + (n * 0x20))
85 #define DSI_VC_IRQSTATUS(n) DSI_REG(0x0118 + (n * 0x20))
86 #define DSI_VC_IRQENABLE(n) DSI_REG(0x011C + (n * 0x20))
90 #define DSI_DSIPHY_CFG0 DSI_REG(0x200 + 0x0000)
91 #define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004)
92 #define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008)
93 #define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014)
94 #define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028)
96 /* DSI_PLL_CTRL_SCP */
98 #define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000)
99 #define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004)
100 #define DSI_PLL_GO DSI_REG(0x300 + 0x0008)
101 #define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C)
102 #define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010)
104 #define REG_GET(idx, start, end) \
105 FLD_GET(dsi_read_reg(idx), start, end)
107 #define REG_FLD_MOD(idx, val, start, end) \
108 dsi_write_reg(idx, FLD_MOD(dsi_read_reg(idx), val, start, end))
110 /* Global interrupts */
111 #define DSI_IRQ_VC0 (1 << 0)
112 #define DSI_IRQ_VC1 (1 << 1)
113 #define DSI_IRQ_VC2 (1 << 2)
114 #define DSI_IRQ_VC3 (1 << 3)
115 #define DSI_IRQ_WAKEUP (1 << 4)
116 #define DSI_IRQ_RESYNC (1 << 5)
117 #define DSI_IRQ_PLL_LOCK (1 << 7)
118 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
119 #define DSI_IRQ_PLL_RECALL (1 << 9)
120 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
121 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
122 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
123 #define DSI_IRQ_TE_TRIGGER (1 << 16)
124 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
125 #define DSI_IRQ_SYNC_LOST (1 << 18)
126 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
127 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
128 #define DSI_IRQ_ERROR_MASK \
129 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
131 #define DSI_IRQ_CHANNEL_MASK 0xf
133 /* Virtual channel interrupts */
134 #define DSI_VC_IRQ_CS (1 << 0)
135 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
136 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
137 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
138 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
139 #define DSI_VC_IRQ_BTA (1 << 5)
140 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
141 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
142 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
143 #define DSI_VC_IRQ_ERROR_MASK \
144 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
145 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
146 DSI_VC_IRQ_FIFO_TX_UDF)
148 /* ComplexIO interrupts */
149 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
150 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
151 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
152 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
153 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
154 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
155 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
156 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
157 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
158 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
159 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
160 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
161 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
162 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
163 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
164 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
165 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
166 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
167 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
168 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
169 #define DSI_CIO_IRQ_ERROR_MASK \
170 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
171 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
172 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRCONTROL1 | \
173 DSI_CIO_IRQ_ERRCONTROL2 | DSI_CIO_IRQ_ERRCONTROL3 | \
174 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
175 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
176 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3)
178 #define DSI_DT_DCS_SHORT_WRITE_0 0x05
179 #define DSI_DT_DCS_SHORT_WRITE_1 0x15
180 #define DSI_DT_DCS_READ 0x06
181 #define DSI_DT_SET_MAX_RET_PKG_SIZE 0x37
182 #define DSI_DT_NULL_PACKET 0x09
183 #define DSI_DT_DCS_LONG_WRITE 0x39
185 #define DSI_DT_RX_ACK_WITH_ERR 0x02
186 #define DSI_DT_RX_DCS_LONG_READ 0x1c
187 #define DSI_DT_RX_SHORT_READ_1 0x21
188 #define DSI_DT_RX_SHORT_READ_2 0x22
190 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
192 #define DSI_MAX_NR_ISRS 2
194 struct dsi_isr_data {
202 DSI_FIFO_SIZE_32 = 1,
203 DSI_FIFO_SIZE_64 = 2,
204 DSI_FIFO_SIZE_96 = 3,
205 DSI_FIFO_SIZE_128 = 4,
216 DSI_DATA1_P = 1 << 2,
217 DSI_DATA1_N = 1 << 3,
218 DSI_DATA2_P = 1 << 4,
219 DSI_DATA2_N = 1 << 5,
222 struct dsi_update_region {
224 struct omap_dss_device *device;
227 struct dsi_irq_stats {
228 unsigned long last_reset;
230 unsigned dsi_irqs[32];
231 unsigned vc_irqs[4][32];
232 unsigned cio_irqs[32];
235 struct dsi_isr_tables {
236 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
237 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
238 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
243 struct platform_device *pdev;
247 void (*dsi_mux_pads)(bool enable);
249 struct dsi_clock_info current_cinfo;
251 bool vdds_dsi_enabled;
252 struct regulator *vdds_dsi_reg;
255 enum dsi_vc_mode mode;
256 struct omap_dss_device *dssdev;
257 enum fifo_size fifo_size;
262 struct semaphore bus_lock;
267 struct dsi_isr_tables isr_tables;
268 /* space for a copy used by the interrupt handler */
269 struct dsi_isr_tables isr_tables_copy;
272 struct dsi_update_region update_region;
277 struct workqueue_struct *workqueue;
279 void (*framedone_callback)(int, void *);
280 void *framedone_data;
282 struct delayed_work framedone_timeout_work;
284 #ifdef DSI_CATCH_MISSING_TE
285 struct timer_list te_timer;
288 unsigned long cache_req_pck;
289 unsigned long cache_clk_freq;
290 struct dsi_clock_info cache_cinfo;
293 spinlock_t errors_lock;
295 ktime_t perf_setup_time;
296 ktime_t perf_start_time;
301 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
302 spinlock_t irq_stats_lock;
303 struct dsi_irq_stats irq_stats;
305 /* DSI PLL Parameter Ranges */
306 unsigned long regm_max, regn_max;
307 unsigned long regm_dispc_max, regm_dsi_max;
308 unsigned long fint_min, fint_max;
309 unsigned long lpdiv_max;
311 unsigned scp_clk_refcount;
315 static unsigned int dsi_perf;
316 module_param_named(dsi_perf, dsi_perf, bool, 0644);
319 static inline void dsi_write_reg(const struct dsi_reg idx, u32 val)
321 __raw_writel(val, dsi.base + idx.idx);
324 static inline u32 dsi_read_reg(const struct dsi_reg idx)
326 return __raw_readl(dsi.base + idx.idx);
330 void dsi_save_context(void)
334 void dsi_restore_context(void)
338 void dsi_bus_lock(void)
342 EXPORT_SYMBOL(dsi_bus_lock);
344 void dsi_bus_unlock(void)
348 EXPORT_SYMBOL(dsi_bus_unlock);
350 static bool dsi_bus_is_locked(void)
352 return dsi.bus_lock.count == 0;
355 static void dsi_completion_handler(void *data, u32 mask)
357 complete((struct completion *)data);
360 static inline int wait_for_bit_change(const struct dsi_reg idx, int bitnum,
365 while (REG_GET(idx, bitnum, bitnum) != value) {
374 static void dsi_perf_mark_setup(void)
376 dsi.perf_setup_time = ktime_get();
379 static void dsi_perf_mark_start(void)
381 dsi.perf_start_time = ktime_get();
384 static void dsi_perf_show(const char *name)
386 ktime_t t, setup_time, trans_time;
388 u32 setup_us, trans_us, total_us;
395 setup_time = ktime_sub(dsi.perf_start_time, dsi.perf_setup_time);
396 setup_us = (u32)ktime_to_us(setup_time);
400 trans_time = ktime_sub(t, dsi.perf_start_time);
401 trans_us = (u32)ktime_to_us(trans_time);
405 total_us = setup_us + trans_us;
407 total_bytes = dsi.update_region.w *
408 dsi.update_region.h *
409 dsi.update_region.device->ctrl.pixel_size / 8;
411 printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), "
412 "%u bytes, %u kbytes/sec\n",
417 1000*1000 / total_us,
419 total_bytes * 1000 / total_us);
422 #define dsi_perf_mark_setup()
423 #define dsi_perf_mark_start()
424 #define dsi_perf_show(x)
427 static void print_irq_status(u32 status)
433 if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0)
436 printk(KERN_DEBUG "DSI IRQ: 0x%x: ", status);
439 if (status & DSI_IRQ_##x) \
465 static void print_irq_status_vc(int channel, u32 status)
471 if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
474 printk(KERN_DEBUG "DSI VC(%d) IRQ 0x%x: ", channel, status);
477 if (status & DSI_VC_IRQ_##x) \
494 static void print_irq_status_cio(u32 status)
499 printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status);
502 if (status & DSI_CIO_IRQ_##x) \
516 PIS(ERRCONTENTIONLP0_1);
517 PIS(ERRCONTENTIONLP1_1);
518 PIS(ERRCONTENTIONLP0_2);
519 PIS(ERRCONTENTIONLP1_2);
520 PIS(ERRCONTENTIONLP0_3);
521 PIS(ERRCONTENTIONLP1_3);
522 PIS(ULPSACTIVENOT_ALL0);
523 PIS(ULPSACTIVENOT_ALL1);
529 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
530 static void dsi_collect_irq_stats(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
534 spin_lock(&dsi.irq_stats_lock);
536 dsi.irq_stats.irq_count++;
537 dss_collect_irq_stats(irqstatus, dsi.irq_stats.dsi_irqs);
539 for (i = 0; i < 4; ++i)
540 dss_collect_irq_stats(vcstatus[i], dsi.irq_stats.vc_irqs[i]);
542 dss_collect_irq_stats(ciostatus, dsi.irq_stats.cio_irqs);
544 spin_unlock(&dsi.irq_stats_lock);
547 #define dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus)
550 static int debug_irq;
552 static void dsi_handle_irq_errors(u32 irqstatus, u32 *vcstatus, u32 ciostatus)
556 if (irqstatus & DSI_IRQ_ERROR_MASK) {
557 DSSERR("DSI error, irqstatus %x\n", irqstatus);
558 print_irq_status(irqstatus);
559 spin_lock(&dsi.errors_lock);
560 dsi.errors |= irqstatus & DSI_IRQ_ERROR_MASK;
561 spin_unlock(&dsi.errors_lock);
562 } else if (debug_irq) {
563 print_irq_status(irqstatus);
566 for (i = 0; i < 4; ++i) {
567 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
568 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
570 print_irq_status_vc(i, vcstatus[i]);
571 } else if (debug_irq) {
572 print_irq_status_vc(i, vcstatus[i]);
576 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
577 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
578 print_irq_status_cio(ciostatus);
579 } else if (debug_irq) {
580 print_irq_status_cio(ciostatus);
584 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
585 unsigned isr_array_size, u32 irqstatus)
587 struct dsi_isr_data *isr_data;
590 for (i = 0; i < isr_array_size; i++) {
591 isr_data = &isr_array[i];
592 if (isr_data->isr && isr_data->mask & irqstatus)
593 isr_data->isr(isr_data->arg, irqstatus);
597 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
598 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
602 dsi_call_isrs(isr_tables->isr_table,
603 ARRAY_SIZE(isr_tables->isr_table),
606 for (i = 0; i < 4; ++i) {
607 if (vcstatus[i] == 0)
609 dsi_call_isrs(isr_tables->isr_table_vc[i],
610 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
615 dsi_call_isrs(isr_tables->isr_table_cio,
616 ARRAY_SIZE(isr_tables->isr_table_cio),
620 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
622 u32 irqstatus, vcstatus[4], ciostatus;
625 spin_lock(&dsi.irq_lock);
627 irqstatus = dsi_read_reg(DSI_IRQSTATUS);
629 /* IRQ is not for us */
631 spin_unlock(&dsi.irq_lock);
635 dsi_write_reg(DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
636 /* flush posted write */
637 dsi_read_reg(DSI_IRQSTATUS);
639 for (i = 0; i < 4; ++i) {
640 if ((irqstatus & (1 << i)) == 0) {
645 vcstatus[i] = dsi_read_reg(DSI_VC_IRQSTATUS(i));
647 dsi_write_reg(DSI_VC_IRQSTATUS(i), vcstatus[i]);
648 /* flush posted write */
649 dsi_read_reg(DSI_VC_IRQSTATUS(i));
652 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
653 ciostatus = dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
655 dsi_write_reg(DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
656 /* flush posted write */
657 dsi_read_reg(DSI_COMPLEXIO_IRQ_STATUS);
662 #ifdef DSI_CATCH_MISSING_TE
663 if (irqstatus & DSI_IRQ_TE_TRIGGER)
664 del_timer(&dsi.te_timer);
667 /* make a copy and unlock, so that isrs can unregister
669 memcpy(&dsi.isr_tables_copy, &dsi.isr_tables, sizeof(dsi.isr_tables));
671 spin_unlock(&dsi.irq_lock);
673 dsi_handle_isrs(&dsi.isr_tables_copy, irqstatus, vcstatus, ciostatus);
675 dsi_handle_irq_errors(irqstatus, vcstatus, ciostatus);
677 dsi_collect_irq_stats(irqstatus, vcstatus, ciostatus);
682 /* dsi.irq_lock has to be locked by the caller */
683 static void _omap_dsi_configure_irqs(struct dsi_isr_data *isr_array,
684 unsigned isr_array_size, u32 default_mask,
685 const struct dsi_reg enable_reg,
686 const struct dsi_reg status_reg)
688 struct dsi_isr_data *isr_data;
695 for (i = 0; i < isr_array_size; i++) {
696 isr_data = &isr_array[i];
698 if (isr_data->isr == NULL)
701 mask |= isr_data->mask;
704 old_mask = dsi_read_reg(enable_reg);
705 /* clear the irqstatus for newly enabled irqs */
706 dsi_write_reg(status_reg, (mask ^ old_mask) & mask);
707 dsi_write_reg(enable_reg, mask);
709 /* flush posted writes */
710 dsi_read_reg(enable_reg);
711 dsi_read_reg(status_reg);
714 /* dsi.irq_lock has to be locked by the caller */
715 static void _omap_dsi_set_irqs(void)
717 u32 mask = DSI_IRQ_ERROR_MASK;
718 #ifdef DSI_CATCH_MISSING_TE
719 mask |= DSI_IRQ_TE_TRIGGER;
721 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table,
722 ARRAY_SIZE(dsi.isr_tables.isr_table), mask,
723 DSI_IRQENABLE, DSI_IRQSTATUS);
726 /* dsi.irq_lock has to be locked by the caller */
727 static void _omap_dsi_set_irqs_vc(int vc)
729 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_vc[vc],
730 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[vc]),
731 DSI_VC_IRQ_ERROR_MASK,
732 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
735 /* dsi.irq_lock has to be locked by the caller */
736 static void _omap_dsi_set_irqs_cio(void)
738 _omap_dsi_configure_irqs(dsi.isr_tables.isr_table_cio,
739 ARRAY_SIZE(dsi.isr_tables.isr_table_cio),
740 DSI_CIO_IRQ_ERROR_MASK,
741 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
744 static void _dsi_initialize_irq(void)
749 spin_lock_irqsave(&dsi.irq_lock, flags);
751 memset(&dsi.isr_tables, 0, sizeof(dsi.isr_tables));
753 _omap_dsi_set_irqs();
754 for (vc = 0; vc < 4; ++vc)
755 _omap_dsi_set_irqs_vc(vc);
756 _omap_dsi_set_irqs_cio();
758 spin_unlock_irqrestore(&dsi.irq_lock, flags);
761 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
762 struct dsi_isr_data *isr_array, unsigned isr_array_size)
764 struct dsi_isr_data *isr_data;
770 /* check for duplicate entry and find a free slot */
772 for (i = 0; i < isr_array_size; i++) {
773 isr_data = &isr_array[i];
775 if (isr_data->isr == isr && isr_data->arg == arg &&
776 isr_data->mask == mask) {
780 if (isr_data->isr == NULL && free_idx == -1)
787 isr_data = &isr_array[free_idx];
790 isr_data->mask = mask;
795 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
796 struct dsi_isr_data *isr_array, unsigned isr_array_size)
798 struct dsi_isr_data *isr_data;
801 for (i = 0; i < isr_array_size; i++) {
802 isr_data = &isr_array[i];
803 if (isr_data->isr != isr || isr_data->arg != arg ||
804 isr_data->mask != mask)
807 isr_data->isr = NULL;
808 isr_data->arg = NULL;
817 static int dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
822 spin_lock_irqsave(&dsi.irq_lock, flags);
824 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table,
825 ARRAY_SIZE(dsi.isr_tables.isr_table));
828 _omap_dsi_set_irqs();
830 spin_unlock_irqrestore(&dsi.irq_lock, flags);
835 static int dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask)
840 spin_lock_irqsave(&dsi.irq_lock, flags);
842 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table,
843 ARRAY_SIZE(dsi.isr_tables.isr_table));
846 _omap_dsi_set_irqs();
848 spin_unlock_irqrestore(&dsi.irq_lock, flags);
853 static int dsi_register_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
859 spin_lock_irqsave(&dsi.irq_lock, flags);
861 r = _dsi_register_isr(isr, arg, mask,
862 dsi.isr_tables.isr_table_vc[channel],
863 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
866 _omap_dsi_set_irqs_vc(channel);
868 spin_unlock_irqrestore(&dsi.irq_lock, flags);
873 static int dsi_unregister_isr_vc(int channel, omap_dsi_isr_t isr, void *arg,
879 spin_lock_irqsave(&dsi.irq_lock, flags);
881 r = _dsi_unregister_isr(isr, arg, mask,
882 dsi.isr_tables.isr_table_vc[channel],
883 ARRAY_SIZE(dsi.isr_tables.isr_table_vc[channel]));
886 _omap_dsi_set_irqs_vc(channel);
888 spin_unlock_irqrestore(&dsi.irq_lock, flags);
893 static int dsi_register_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
898 spin_lock_irqsave(&dsi.irq_lock, flags);
900 r = _dsi_register_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
901 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
904 _omap_dsi_set_irqs_cio();
906 spin_unlock_irqrestore(&dsi.irq_lock, flags);
911 static int dsi_unregister_isr_cio(omap_dsi_isr_t isr, void *arg, u32 mask)
916 spin_lock_irqsave(&dsi.irq_lock, flags);
918 r = _dsi_unregister_isr(isr, arg, mask, dsi.isr_tables.isr_table_cio,
919 ARRAY_SIZE(dsi.isr_tables.isr_table_cio));
922 _omap_dsi_set_irqs_cio();
924 spin_unlock_irqrestore(&dsi.irq_lock, flags);
929 static u32 dsi_get_errors(void)
933 spin_lock_irqsave(&dsi.errors_lock, flags);
936 spin_unlock_irqrestore(&dsi.errors_lock, flags);
940 /* DSI func clock. this could also be dsi_pll_hsdiv_dsi_clk */
941 static inline void enable_clocks(bool enable)
944 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
946 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
949 /* source clock for DSI PLL. this could also be PCLKFREE */
950 static inline void dsi_enable_pll_clock(bool enable)
953 dss_clk_enable(DSS_CLK_SYSCK);
955 dss_clk_disable(DSS_CLK_SYSCK);
957 if (enable && dsi.pll_locked) {
958 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1)
959 DSSERR("cannot lock PLL when enabling clocks\n");
964 static void _dsi_print_reset_status(void)
972 /* A dummy read using the SCP interface to any DSIPHY register is
973 * required after DSIPHY reset to complete the reset of the DSI complex
975 l = dsi_read_reg(DSI_DSIPHY_CFG5);
977 printk(KERN_DEBUG "DSI resets: ");
979 l = dsi_read_reg(DSI_PLL_STATUS);
980 printk("PLL (%d) ", FLD_GET(l, 0, 0));
982 l = dsi_read_reg(DSI_COMPLEXIO_CFG1);
983 printk("CIO (%d) ", FLD_GET(l, 29, 29));
985 if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) {
995 l = dsi_read_reg(DSI_DSIPHY_CFG5);
996 printk("PHY (%x%x%x, %d, %d, %d)\n",
1002 FLD_GET(l, 31, 31));
1005 #define _dsi_print_reset_status()
1008 static inline int dsi_if_enable(bool enable)
1010 DSSDBG("dsi_if_enable(%d)\n", enable);
1012 enable = enable ? 1 : 0;
1013 REG_FLD_MOD(DSI_CTRL, enable, 0, 0); /* IF_EN */
1015 if (wait_for_bit_change(DSI_CTRL, 0, enable) != enable) {
1016 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1023 unsigned long dsi_get_pll_hsdiv_dispc_rate(void)
1025 return dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk;
1028 static unsigned long dsi_get_pll_hsdiv_dsi_rate(void)
1030 return dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk;
1033 static unsigned long dsi_get_txbyteclkhs(void)
1035 return dsi.current_cinfo.clkin4ddr / 16;
1038 static unsigned long dsi_fclk_rate(void)
1042 if (dss_get_dsi_clk_source() == OMAP_DSS_CLK_SRC_FCK) {
1043 /* DSI FCLK source is DSS_CLK_FCK */
1044 r = dss_clk_get_rate(DSS_CLK_FCK);
1046 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1047 r = dsi_get_pll_hsdiv_dsi_rate();
1053 static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev)
1055 unsigned long dsi_fclk;
1056 unsigned lp_clk_div;
1057 unsigned long lp_clk;
1059 lp_clk_div = dssdev->clocks.dsi.lp_clk_div;
1061 if (lp_clk_div == 0 || lp_clk_div > dsi.lpdiv_max)
1064 dsi_fclk = dsi_fclk_rate();
1066 lp_clk = dsi_fclk / 2 / lp_clk_div;
1068 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1069 dsi.current_cinfo.lp_clk = lp_clk;
1070 dsi.current_cinfo.lp_clk_div = lp_clk_div;
1072 REG_FLD_MOD(DSI_CLK_CTRL, lp_clk_div, 12, 0); /* LP_CLK_DIVISOR */
1074 REG_FLD_MOD(DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0,
1075 21, 21); /* LP_RX_SYNCHRO_ENABLE */
1080 static void dsi_enable_scp_clk(void)
1082 if (dsi.scp_clk_refcount++ == 0)
1083 REG_FLD_MOD(DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
1086 static void dsi_disable_scp_clk(void)
1088 WARN_ON(dsi.scp_clk_refcount == 0);
1089 if (--dsi.scp_clk_refcount == 0)
1090 REG_FLD_MOD(DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
1093 enum dsi_pll_power_state {
1094 DSI_PLL_POWER_OFF = 0x0,
1095 DSI_PLL_POWER_ON_HSCLK = 0x1,
1096 DSI_PLL_POWER_ON_ALL = 0x2,
1097 DSI_PLL_POWER_ON_DIV = 0x3,
1100 static int dsi_pll_power(enum dsi_pll_power_state state)
1104 /* DSI-PLL power command 0x3 is not working */
1105 if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) &&
1106 state == DSI_PLL_POWER_ON_DIV)
1107 state = DSI_PLL_POWER_ON_ALL;
1109 REG_FLD_MOD(DSI_CLK_CTRL, state, 31, 30); /* PLL_PWR_CMD */
1111 /* PLL_PWR_STATUS */
1112 while (FLD_GET(dsi_read_reg(DSI_CLK_CTRL), 29, 28) != state) {
1114 DSSERR("Failed to set DSI PLL power mode to %d\n",
1124 /* calculate clock rates using dividers in cinfo */
1125 static int dsi_calc_clock_rates(struct omap_dss_device *dssdev,
1126 struct dsi_clock_info *cinfo)
1128 if (cinfo->regn == 0 || cinfo->regn > dsi.regn_max)
1131 if (cinfo->regm == 0 || cinfo->regm > dsi.regm_max)
1134 if (cinfo->regm_dispc > dsi.regm_dispc_max)
1137 if (cinfo->regm_dsi > dsi.regm_dsi_max)
1140 if (cinfo->use_sys_clk) {
1141 cinfo->clkin = dss_clk_get_rate(DSS_CLK_SYSCK);
1142 /* XXX it is unclear if highfreq should be used
1143 * with DSS_SYS_CLK source also */
1144 cinfo->highfreq = 0;
1146 cinfo->clkin = dispc_pclk_rate(dssdev->manager->id);
1148 if (cinfo->clkin < 32000000)
1149 cinfo->highfreq = 0;
1151 cinfo->highfreq = 1;
1154 cinfo->fint = cinfo->clkin / (cinfo->regn * (cinfo->highfreq ? 2 : 1));
1156 if (cinfo->fint > dsi.fint_max || cinfo->fint < dsi.fint_min)
1159 cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint;
1161 if (cinfo->clkin4ddr > 1800 * 1000 * 1000)
1164 if (cinfo->regm_dispc > 0)
1165 cinfo->dsi_pll_hsdiv_dispc_clk =
1166 cinfo->clkin4ddr / cinfo->regm_dispc;
1168 cinfo->dsi_pll_hsdiv_dispc_clk = 0;
1170 if (cinfo->regm_dsi > 0)
1171 cinfo->dsi_pll_hsdiv_dsi_clk =
1172 cinfo->clkin4ddr / cinfo->regm_dsi;
1174 cinfo->dsi_pll_hsdiv_dsi_clk = 0;
1179 int dsi_pll_calc_clock_div_pck(bool is_tft, unsigned long req_pck,
1180 struct dsi_clock_info *dsi_cinfo,
1181 struct dispc_clock_info *dispc_cinfo)
1183 struct dsi_clock_info cur, best;
1184 struct dispc_clock_info best_dispc;
1185 int min_fck_per_pck;
1187 unsigned long dss_sys_clk, max_dss_fck;
1189 dss_sys_clk = dss_clk_get_rate(DSS_CLK_SYSCK);
1191 max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
1193 if (req_pck == dsi.cache_req_pck &&
1194 dsi.cache_cinfo.clkin == dss_sys_clk) {
1195 DSSDBG("DSI clock info found from cache\n");
1196 *dsi_cinfo = dsi.cache_cinfo;
1197 dispc_find_clk_divs(is_tft, req_pck,
1198 dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo);
1202 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
1204 if (min_fck_per_pck &&
1205 req_pck * min_fck_per_pck > max_dss_fck) {
1206 DSSERR("Requested pixel clock not possible with the current "
1207 "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning "
1208 "the constraint off.\n");
1209 min_fck_per_pck = 0;
1212 DSSDBG("dsi_pll_calc\n");
1215 memset(&best, 0, sizeof(best));
1216 memset(&best_dispc, 0, sizeof(best_dispc));
1218 memset(&cur, 0, sizeof(cur));
1219 cur.clkin = dss_sys_clk;
1220 cur.use_sys_clk = 1;
1223 /* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */
1224 /* highfreq: 0.75MHz < Fint = clkin / (2*regn) < 2.1MHz */
1225 /* To reduce PLL lock time, keep Fint high (around 2 MHz) */
1226 for (cur.regn = 1; cur.regn < dsi.regn_max; ++cur.regn) {
1227 if (cur.highfreq == 0)
1228 cur.fint = cur.clkin / cur.regn;
1230 cur.fint = cur.clkin / (2 * cur.regn);
1232 if (cur.fint > dsi.fint_max || cur.fint < dsi.fint_min)
1235 /* DSIPHY(MHz) = (2 * regm / regn) * (clkin / (highfreq + 1)) */
1236 for (cur.regm = 1; cur.regm < dsi.regm_max; ++cur.regm) {
1239 a = 2 * cur.regm * (cur.clkin/1000);
1240 b = cur.regn * (cur.highfreq + 1);
1241 cur.clkin4ddr = a / b * 1000;
1243 if (cur.clkin4ddr > 1800 * 1000 * 1000)
1246 /* dsi_pll_hsdiv_dispc_clk(MHz) =
1247 * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */
1248 for (cur.regm_dispc = 1; cur.regm_dispc < dsi.regm_dispc_max;
1250 struct dispc_clock_info cur_dispc;
1251 cur.dsi_pll_hsdiv_dispc_clk =
1252 cur.clkin4ddr / cur.regm_dispc;
1254 /* this will narrow down the search a bit,
1255 * but still give pixclocks below what was
1257 if (cur.dsi_pll_hsdiv_dispc_clk < req_pck)
1260 if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck)
1263 if (min_fck_per_pck &&
1264 cur.dsi_pll_hsdiv_dispc_clk <
1265 req_pck * min_fck_per_pck)
1270 dispc_find_clk_divs(is_tft, req_pck,
1271 cur.dsi_pll_hsdiv_dispc_clk,
1274 if (abs(cur_dispc.pck - req_pck) <
1275 abs(best_dispc.pck - req_pck)) {
1277 best_dispc = cur_dispc;
1279 if (cur_dispc.pck == req_pck)
1287 if (min_fck_per_pck) {
1288 DSSERR("Could not find suitable clock settings.\n"
1289 "Turning FCK/PCK constraint off and"
1291 min_fck_per_pck = 0;
1295 DSSERR("Could not find suitable clock settings.\n");
1300 /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */
1302 best.dsi_pll_hsdiv_dsi_clk = 0;
1307 *dispc_cinfo = best_dispc;
1309 dsi.cache_req_pck = req_pck;
1310 dsi.cache_clk_freq = 0;
1311 dsi.cache_cinfo = best;
1316 int dsi_pll_set_clock_div(struct dsi_clock_info *cinfo)
1321 u8 regn_start, regn_end, regm_start, regm_end;
1322 u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end;
1326 dsi.current_cinfo.use_sys_clk = cinfo->use_sys_clk;
1327 dsi.current_cinfo.highfreq = cinfo->highfreq;
1329 dsi.current_cinfo.fint = cinfo->fint;
1330 dsi.current_cinfo.clkin4ddr = cinfo->clkin4ddr;
1331 dsi.current_cinfo.dsi_pll_hsdiv_dispc_clk =
1332 cinfo->dsi_pll_hsdiv_dispc_clk;
1333 dsi.current_cinfo.dsi_pll_hsdiv_dsi_clk =
1334 cinfo->dsi_pll_hsdiv_dsi_clk;
1336 dsi.current_cinfo.regn = cinfo->regn;
1337 dsi.current_cinfo.regm = cinfo->regm;
1338 dsi.current_cinfo.regm_dispc = cinfo->regm_dispc;
1339 dsi.current_cinfo.regm_dsi = cinfo->regm_dsi;
1341 DSSDBG("DSI Fint %ld\n", cinfo->fint);
1343 DSSDBG("clkin (%s) rate %ld, highfreq %d\n",
1344 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree",
1348 /* DSIPHY == CLKIN4DDR */
1349 DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu / %d = %lu\n",
1353 cinfo->highfreq + 1,
1356 DSSDBG("Data rate on 1 DSI lane %ld Mbps\n",
1357 cinfo->clkin4ddr / 1000 / 1000 / 2);
1359 DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4);
1361 DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc,
1362 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1363 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
1364 cinfo->dsi_pll_hsdiv_dispc_clk);
1365 DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi,
1366 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1367 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
1368 cinfo->dsi_pll_hsdiv_dsi_clk);
1370 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end);
1371 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end);
1372 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start,
1374 dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start,
1377 REG_FLD_MOD(DSI_PLL_CONTROL, 0, 0, 0); /* DSI_PLL_AUTOMODE = manual */
1379 l = dsi_read_reg(DSI_PLL_CONFIGURATION1);
1380 l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */
1382 l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end);
1384 l = FLD_MOD(l, cinfo->regm, regm_start, regm_end);
1386 l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0,
1387 regm_dispc_start, regm_dispc_end);
1388 /* DSIPROTO_CLOCK_DIV */
1389 l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0,
1390 regm_dsi_start, regm_dsi_end);
1391 dsi_write_reg(DSI_PLL_CONFIGURATION1, l);
1393 BUG_ON(cinfo->fint < dsi.fint_min || cinfo->fint > dsi.fint_max);
1395 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) {
1396 f = cinfo->fint < 1000000 ? 0x3 :
1397 cinfo->fint < 1250000 ? 0x4 :
1398 cinfo->fint < 1500000 ? 0x5 :
1399 cinfo->fint < 1750000 ? 0x6 :
1403 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1405 if (dss_has_feature(FEAT_DSI_PLL_FREQSEL))
1406 l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */
1407 l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1,
1408 11, 11); /* DSI_PLL_CLKSEL */
1409 l = FLD_MOD(l, cinfo->highfreq,
1410 12, 12); /* DSI_PLL_HIGHFREQ */
1411 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1412 l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */
1413 l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */
1414 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1416 REG_FLD_MOD(DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */
1418 if (wait_for_bit_change(DSI_PLL_GO, 0, 0) != 0) {
1419 DSSERR("dsi pll go bit not going down.\n");
1424 if (wait_for_bit_change(DSI_PLL_STATUS, 1, 1) != 1) {
1425 DSSERR("cannot lock PLL\n");
1432 l = dsi_read_reg(DSI_PLL_CONFIGURATION2);
1433 l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */
1434 l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */
1435 l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */
1436 l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */
1437 l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */
1438 l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */
1439 l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */
1440 l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */
1441 l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */
1442 l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */
1443 l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */
1444 l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */
1445 l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */
1446 l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */
1447 dsi_write_reg(DSI_PLL_CONFIGURATION2, l);
1449 DSSDBG("PLL config done\n");
1454 int dsi_pll_init(struct omap_dss_device *dssdev, bool enable_hsclk,
1458 enum dsi_pll_power_state pwstate;
1460 DSSDBG("PLL init\n");
1462 if (dsi.vdds_dsi_reg == NULL) {
1463 struct regulator *vdds_dsi;
1465 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
1467 if (IS_ERR(vdds_dsi)) {
1468 DSSERR("can't get VDDS_DSI regulator\n");
1469 return PTR_ERR(vdds_dsi);
1472 dsi.vdds_dsi_reg = vdds_dsi;
1476 dsi_enable_pll_clock(1);
1478 * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
1480 dsi_enable_scp_clk();
1482 if (!dsi.vdds_dsi_enabled) {
1483 r = regulator_enable(dsi.vdds_dsi_reg);
1486 dsi.vdds_dsi_enabled = true;
1489 /* XXX PLL does not come out of reset without this... */
1490 dispc_pck_free_enable(1);
1492 if (wait_for_bit_change(DSI_PLL_STATUS, 0, 1) != 1) {
1493 DSSERR("PLL not coming out of reset.\n");
1495 dispc_pck_free_enable(0);
1499 /* XXX ... but if left on, we get problems when planes do not
1500 * fill the whole display. No idea about this */
1501 dispc_pck_free_enable(0);
1503 if (enable_hsclk && enable_hsdiv)
1504 pwstate = DSI_PLL_POWER_ON_ALL;
1505 else if (enable_hsclk)
1506 pwstate = DSI_PLL_POWER_ON_HSCLK;
1507 else if (enable_hsdiv)
1508 pwstate = DSI_PLL_POWER_ON_DIV;
1510 pwstate = DSI_PLL_POWER_OFF;
1512 r = dsi_pll_power(pwstate);
1517 DSSDBG("PLL init done\n");
1521 if (dsi.vdds_dsi_enabled) {
1522 regulator_disable(dsi.vdds_dsi_reg);
1523 dsi.vdds_dsi_enabled = false;
1526 dsi_disable_scp_clk();
1528 dsi_enable_pll_clock(0);
1532 void dsi_pll_uninit(bool disconnect_lanes)
1535 dsi_pll_power(DSI_PLL_POWER_OFF);
1536 if (disconnect_lanes) {
1537 WARN_ON(!dsi.vdds_dsi_enabled);
1538 regulator_disable(dsi.vdds_dsi_reg);
1539 dsi.vdds_dsi_enabled = false;
1542 dsi_disable_scp_clk();
1544 dsi_enable_pll_clock(0);
1546 DSSDBG("PLL uninit done\n");
1549 void dsi_dump_clocks(struct seq_file *s)
1551 struct dsi_clock_info *cinfo = &dsi.current_cinfo;
1552 enum omap_dss_clk_source dispc_clk_src, dsi_clk_src;
1554 dispc_clk_src = dss_get_dispc_clk_source();
1555 dsi_clk_src = dss_get_dsi_clk_source();
1559 seq_printf(s, "- DSI PLL -\n");
1561 seq_printf(s, "dsi pll source = %s\n",
1562 cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree");
1564 seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn);
1566 seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n",
1567 cinfo->clkin4ddr, cinfo->regm);
1569 seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n",
1570 dss_get_generic_clk_source_name(dispc_clk_src),
1571 dss_feat_get_clk_source_name(dispc_clk_src),
1572 cinfo->dsi_pll_hsdiv_dispc_clk,
1574 dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1577 seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n",
1578 dss_get_generic_clk_source_name(dsi_clk_src),
1579 dss_feat_get_clk_source_name(dsi_clk_src),
1580 cinfo->dsi_pll_hsdiv_dsi_clk,
1582 dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ?
1585 seq_printf(s, "- DSI -\n");
1587 seq_printf(s, "dsi fclk source = %s (%s)\n",
1588 dss_get_generic_clk_source_name(dsi_clk_src),
1589 dss_feat_get_clk_source_name(dsi_clk_src));
1591 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate());
1593 seq_printf(s, "DDR_CLK\t\t%lu\n",
1594 cinfo->clkin4ddr / 4);
1596 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs());
1598 seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk);
1600 seq_printf(s, "VP_CLK\t\t%lu\n"
1602 dispc_lclk_rate(OMAP_DSS_CHANNEL_LCD),
1603 dispc_pclk_rate(OMAP_DSS_CHANNEL_LCD));
1608 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1609 void dsi_dump_irqs(struct seq_file *s)
1611 unsigned long flags;
1612 struct dsi_irq_stats stats;
1614 spin_lock_irqsave(&dsi.irq_stats_lock, flags);
1616 stats = dsi.irq_stats;
1617 memset(&dsi.irq_stats, 0, sizeof(dsi.irq_stats));
1618 dsi.irq_stats.last_reset = jiffies;
1620 spin_unlock_irqrestore(&dsi.irq_stats_lock, flags);
1622 seq_printf(s, "period %u ms\n",
1623 jiffies_to_msecs(jiffies - stats.last_reset));
1625 seq_printf(s, "irqs %d\n", stats.irq_count);
1627 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1629 seq_printf(s, "-- DSI interrupts --\n");
1645 PIS(LDO_POWER_GOOD);
1650 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1651 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1652 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1653 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1654 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1656 seq_printf(s, "-- VC interrupts --\n");
1665 PIS(PP_BUSY_CHANGE);
1669 seq_printf(s, "%-20s %10d\n", #x, \
1670 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1672 seq_printf(s, "-- CIO interrupts --\n");
1685 PIS(ERRCONTENTIONLP0_1);
1686 PIS(ERRCONTENTIONLP1_1);
1687 PIS(ERRCONTENTIONLP0_2);
1688 PIS(ERRCONTENTIONLP1_2);
1689 PIS(ERRCONTENTIONLP0_3);
1690 PIS(ERRCONTENTIONLP1_3);
1691 PIS(ULPSACTIVENOT_ALL0);
1692 PIS(ULPSACTIVENOT_ALL1);
1697 void dsi_dump_regs(struct seq_file *s)
1699 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(r))
1701 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK);
1703 DUMPREG(DSI_REVISION);
1704 DUMPREG(DSI_SYSCONFIG);
1705 DUMPREG(DSI_SYSSTATUS);
1706 DUMPREG(DSI_IRQSTATUS);
1707 DUMPREG(DSI_IRQENABLE);
1709 DUMPREG(DSI_COMPLEXIO_CFG1);
1710 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1711 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1712 DUMPREG(DSI_CLK_CTRL);
1713 DUMPREG(DSI_TIMING1);
1714 DUMPREG(DSI_TIMING2);
1715 DUMPREG(DSI_VM_TIMING1);
1716 DUMPREG(DSI_VM_TIMING2);
1717 DUMPREG(DSI_VM_TIMING3);
1718 DUMPREG(DSI_CLK_TIMING);
1719 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1720 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1721 DUMPREG(DSI_COMPLEXIO_CFG2);
1722 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1723 DUMPREG(DSI_VM_TIMING4);
1724 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1725 DUMPREG(DSI_VM_TIMING5);
1726 DUMPREG(DSI_VM_TIMING6);
1727 DUMPREG(DSI_VM_TIMING7);
1728 DUMPREG(DSI_STOPCLK_TIMING);
1730 DUMPREG(DSI_VC_CTRL(0));
1731 DUMPREG(DSI_VC_TE(0));
1732 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1733 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1734 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1735 DUMPREG(DSI_VC_IRQSTATUS(0));
1736 DUMPREG(DSI_VC_IRQENABLE(0));
1738 DUMPREG(DSI_VC_CTRL(1));
1739 DUMPREG(DSI_VC_TE(1));
1740 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1741 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1742 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1743 DUMPREG(DSI_VC_IRQSTATUS(1));
1744 DUMPREG(DSI_VC_IRQENABLE(1));
1746 DUMPREG(DSI_VC_CTRL(2));
1747 DUMPREG(DSI_VC_TE(2));
1748 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1749 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1750 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1751 DUMPREG(DSI_VC_IRQSTATUS(2));
1752 DUMPREG(DSI_VC_IRQENABLE(2));
1754 DUMPREG(DSI_VC_CTRL(3));
1755 DUMPREG(DSI_VC_TE(3));
1756 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1757 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1758 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1759 DUMPREG(DSI_VC_IRQSTATUS(3));
1760 DUMPREG(DSI_VC_IRQENABLE(3));
1762 DUMPREG(DSI_DSIPHY_CFG0);
1763 DUMPREG(DSI_DSIPHY_CFG1);
1764 DUMPREG(DSI_DSIPHY_CFG2);
1765 DUMPREG(DSI_DSIPHY_CFG5);
1767 DUMPREG(DSI_PLL_CONTROL);
1768 DUMPREG(DSI_PLL_STATUS);
1769 DUMPREG(DSI_PLL_GO);
1770 DUMPREG(DSI_PLL_CONFIGURATION1);
1771 DUMPREG(DSI_PLL_CONFIGURATION2);
1773 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK);
1777 enum dsi_cio_power_state {
1778 DSI_COMPLEXIO_POWER_OFF = 0x0,
1779 DSI_COMPLEXIO_POWER_ON = 0x1,
1780 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1783 static int dsi_cio_power(enum dsi_cio_power_state state)
1788 REG_FLD_MOD(DSI_COMPLEXIO_CFG1, state, 28, 27);
1791 while (FLD_GET(dsi_read_reg(DSI_COMPLEXIO_CFG1), 26, 25) != state) {
1793 DSSERR("failed to set complexio power state to "
1803 static void dsi_set_lane_config(struct omap_dss_device *dssdev)
1807 int clk_lane = dssdev->phy.dsi.clk_lane;
1808 int data1_lane = dssdev->phy.dsi.data1_lane;
1809 int data2_lane = dssdev->phy.dsi.data2_lane;
1810 int clk_pol = dssdev->phy.dsi.clk_pol;
1811 int data1_pol = dssdev->phy.dsi.data1_pol;
1812 int data2_pol = dssdev->phy.dsi.data2_pol;
1814 r = dsi_read_reg(DSI_COMPLEXIO_CFG1);
1815 r = FLD_MOD(r, clk_lane, 2, 0);
1816 r = FLD_MOD(r, clk_pol, 3, 3);
1817 r = FLD_MOD(r, data1_lane, 6, 4);
1818 r = FLD_MOD(r, data1_pol, 7, 7);
1819 r = FLD_MOD(r, data2_lane, 10, 8);
1820 r = FLD_MOD(r, data2_pol, 11, 11);
1821 dsi_write_reg(DSI_COMPLEXIO_CFG1, r);
1823 /* The configuration of the DSI complex I/O (number of data lanes,
1824 position, differential order) should not be changed while
1825 DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. In order for
1826 the hardware to take into account a new configuration of the complex
1827 I/O (done in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to
1828 follow this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1,
1829 then reset the DSS.DSI_CTRL[0] IF_EN to 0, then set
1830 DSS.DSI_CLK_CTRL[20] LP_CLK_ENABLE to 1 and finally set again the
1831 DSS.DSI_CTRL[0] IF_EN bit to 1. If the sequence is not followed, the
1832 DSI complex I/O configuration is unknown. */
1835 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1836 REG_FLD_MOD(DSI_CTRL, 0, 0, 0);
1837 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20);
1838 REG_FLD_MOD(DSI_CTRL, 1, 0, 0);
1842 static inline unsigned ns2ddr(unsigned ns)
1844 /* convert time in ns to ddr ticks, rounding up */
1845 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1846 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1849 static inline unsigned ddr2ns(unsigned ddr)
1851 unsigned long ddr_clk = dsi.current_cinfo.clkin4ddr / 4;
1852 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1855 static void dsi_cio_timings(void)
1858 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1859 u32 tlpx_half, tclk_trail, tclk_zero;
1862 /* calculate timings */
1864 /* 1 * DDR_CLK = 2 * UI */
1866 /* min 40ns + 4*UI max 85ns + 6*UI */
1867 ths_prepare = ns2ddr(70) + 2;
1869 /* min 145ns + 10*UI */
1870 ths_prepare_ths_zero = ns2ddr(175) + 2;
1872 /* min max(8*UI, 60ns+4*UI) */
1873 ths_trail = ns2ddr(60) + 5;
1876 ths_exit = ns2ddr(145);
1879 tlpx_half = ns2ddr(25);
1882 tclk_trail = ns2ddr(60) + 2;
1884 /* min 38ns, max 95ns */
1885 tclk_prepare = ns2ddr(65);
1887 /* min tclk-prepare + tclk-zero = 300ns */
1888 tclk_zero = ns2ddr(260);
1890 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1891 ths_prepare, ddr2ns(ths_prepare),
1892 ths_prepare_ths_zero, ddr2ns(ths_prepare_ths_zero));
1893 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1894 ths_trail, ddr2ns(ths_trail),
1895 ths_exit, ddr2ns(ths_exit));
1897 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1898 "tclk_zero %u (%uns)\n",
1899 tlpx_half, ddr2ns(tlpx_half),
1900 tclk_trail, ddr2ns(tclk_trail),
1901 tclk_zero, ddr2ns(tclk_zero));
1902 DSSDBG("tclk_prepare %u (%uns)\n",
1903 tclk_prepare, ddr2ns(tclk_prepare));
1905 /* program timings */
1907 r = dsi_read_reg(DSI_DSIPHY_CFG0);
1908 r = FLD_MOD(r, ths_prepare, 31, 24);
1909 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1910 r = FLD_MOD(r, ths_trail, 15, 8);
1911 r = FLD_MOD(r, ths_exit, 7, 0);
1912 dsi_write_reg(DSI_DSIPHY_CFG0, r);
1914 r = dsi_read_reg(DSI_DSIPHY_CFG1);
1915 r = FLD_MOD(r, tlpx_half, 22, 16);
1916 r = FLD_MOD(r, tclk_trail, 15, 8);
1917 r = FLD_MOD(r, tclk_zero, 7, 0);
1918 dsi_write_reg(DSI_DSIPHY_CFG1, r);
1920 r = dsi_read_reg(DSI_DSIPHY_CFG2);
1921 r = FLD_MOD(r, tclk_prepare, 7, 0);
1922 dsi_write_reg(DSI_DSIPHY_CFG2, r);
1925 static void dsi_cio_enable_lane_override(struct omap_dss_device *dssdev,
1926 enum dsi_lane lanes)
1928 int clk_lane = dssdev->phy.dsi.clk_lane;
1929 int data1_lane = dssdev->phy.dsi.data1_lane;
1930 int data2_lane = dssdev->phy.dsi.data2_lane;
1931 int clk_pol = dssdev->phy.dsi.clk_pol;
1932 int data1_pol = dssdev->phy.dsi.data1_pol;
1933 int data2_pol = dssdev->phy.dsi.data2_pol;
1937 if (lanes & DSI_CLK_P)
1938 l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 0 : 1));
1939 if (lanes & DSI_CLK_N)
1940 l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 1 : 0));
1942 if (lanes & DSI_DATA1_P)
1943 l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 0 : 1));
1944 if (lanes & DSI_DATA1_N)
1945 l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 1 : 0));
1947 if (lanes & DSI_DATA2_P)
1948 l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 0 : 1));
1949 if (lanes & DSI_DATA2_N)
1950 l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 1 : 0));
1953 * Bits in REGLPTXSCPDAT4TO0DXDY:
1959 /* Set the lane override configuration */
1960 REG_FLD_MOD(DSI_DSIPHY_CFG10, l, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
1962 /* Enable lane override */
1963 REG_FLD_MOD(DSI_DSIPHY_CFG10, 1, 27, 27); /* ENLPTXSCPDAT */
1966 static void dsi_cio_disable_lane_override(void)
1968 /* Disable lane override */
1969 REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
1970 /* Reset the lane override configuration */
1971 REG_FLD_MOD(DSI_DSIPHY_CFG10, 0, 22, 17); /* REGLPTXSCPDAT4TO0DXDY */
1974 static int dsi_cio_wait_tx_clk_esc_reset(struct omap_dss_device *dssdev)
1980 if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) {
1994 if (dssdev->phy.dsi.clk_lane != 0)
1995 in_use[dssdev->phy.dsi.clk_lane - 1] = true;
1996 if (dssdev->phy.dsi.data1_lane != 0)
1997 in_use[dssdev->phy.dsi.data1_lane - 1] = true;
1998 if (dssdev->phy.dsi.data2_lane != 0)
1999 in_use[dssdev->phy.dsi.data2_lane - 1] = true;
2007 l = dsi_read_reg(DSI_DSIPHY_CFG5);
2010 for (i = 0; i < 3; ++i) {
2011 if (!in_use[i] || (l & (1 << bits[i])))
2019 for (i = 0; i < 3; ++i) {
2020 if (!in_use[i] || (l & (1 << bits[i])))
2023 DSSERR("CIO TXCLKESC%d domain not coming " \
2024 "out of reset\n", i);
2033 static int dsi_cio_init(struct omap_dss_device *dssdev)
2040 if (dsi.dsi_mux_pads)
2041 dsi.dsi_mux_pads(true);
2043 dsi_enable_scp_clk();
2045 /* A dummy read using the SCP interface to any DSIPHY register is
2046 * required after DSIPHY reset to complete the reset of the DSI complex
2048 dsi_read_reg(DSI_DSIPHY_CFG5);
2050 if (wait_for_bit_change(DSI_DSIPHY_CFG5, 30, 1) != 1) {
2051 DSSERR("CIO SCP Clock domain not coming out of reset.\n");
2053 goto err_scp_clk_dom;
2056 dsi_set_lane_config(dssdev);
2058 /* set TX STOP MODE timer to maximum for this operation */
2059 l = dsi_read_reg(DSI_TIMING1);
2060 l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2061 l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
2062 l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
2063 l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
2064 dsi_write_reg(DSI_TIMING1, l);
2066 if (dsi.ulps_enabled) {
2067 DSSDBG("manual ulps exit\n");
2069 /* ULPS is exited by Mark-1 state for 1ms, followed by
2070 * stop state. DSS HW cannot do this via the normal
2071 * ULPS exit sequence, as after reset the DSS HW thinks
2072 * that we are not in ULPS mode, and refuses to send the
2073 * sequence. So we need to send the ULPS exit sequence
2077 dsi_cio_enable_lane_override(dssdev,
2078 DSI_CLK_P | DSI_DATA1_P | DSI_DATA2_P);
2081 r = dsi_cio_power(DSI_COMPLEXIO_POWER_ON);
2085 if (wait_for_bit_change(DSI_COMPLEXIO_CFG1, 29, 1) != 1) {
2086 DSSERR("CIO PWR clock domain not coming out of reset.\n");
2088 goto err_cio_pwr_dom;
2091 dsi_if_enable(true);
2092 dsi_if_enable(false);
2093 REG_FLD_MOD(DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
2095 r = dsi_cio_wait_tx_clk_esc_reset(dssdev);
2097 goto err_tx_clk_esc_rst;
2099 if (dsi.ulps_enabled) {
2100 /* Keep Mark-1 state for 1ms (as per DSI spec) */
2101 ktime_t wait = ns_to_ktime(1000 * 1000);
2102 set_current_state(TASK_UNINTERRUPTIBLE);
2103 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
2105 /* Disable the override. The lanes should be set to Mark-11
2106 * state by the HW */
2107 dsi_cio_disable_lane_override();
2110 /* FORCE_TX_STOP_MODE_IO */
2111 REG_FLD_MOD(DSI_TIMING1, 0, 15, 15);
2115 dsi.ulps_enabled = false;
2117 DSSDBG("CIO init done\n");
2122 REG_FLD_MOD(DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
2124 dsi_cio_power(DSI_COMPLEXIO_POWER_OFF);
2126 if (dsi.ulps_enabled)
2127 dsi_cio_disable_lane_override();
2129 dsi_disable_scp_clk();
2130 if (dsi.dsi_mux_pads)
2131 dsi.dsi_mux_pads(false);
2135 static void dsi_cio_uninit(void)
2137 dsi_cio_power(DSI_COMPLEXIO_POWER_OFF);
2138 dsi_disable_scp_clk();
2139 if (dsi.dsi_mux_pads)
2140 dsi.dsi_mux_pads(false);
2143 static int _dsi_wait_reset(void)
2147 while (REG_GET(DSI_SYSSTATUS, 0, 0) == 0) {
2149 DSSERR("soft reset failed\n");
2158 static int _dsi_reset(void)
2161 REG_FLD_MOD(DSI_SYSCONFIG, 1, 1, 1);
2162 return _dsi_wait_reset();
2165 static void dsi_config_tx_fifo(enum fifo_size size1, enum fifo_size size2,
2166 enum fifo_size size3, enum fifo_size size4)
2172 dsi.vc[0].fifo_size = size1;
2173 dsi.vc[1].fifo_size = size2;
2174 dsi.vc[2].fifo_size = size3;
2175 dsi.vc[3].fifo_size = size4;
2177 for (i = 0; i < 4; i++) {
2179 int size = dsi.vc[i].fifo_size;
2181 if (add + size > 4) {
2182 DSSERR("Illegal FIFO configuration\n");
2186 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2188 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2192 dsi_write_reg(DSI_TX_FIFO_VC_SIZE, r);
2195 static void dsi_config_rx_fifo(enum fifo_size size1, enum fifo_size size2,
2196 enum fifo_size size3, enum fifo_size size4)
2202 dsi.vc[0].fifo_size = size1;
2203 dsi.vc[1].fifo_size = size2;
2204 dsi.vc[2].fifo_size = size3;
2205 dsi.vc[3].fifo_size = size4;
2207 for (i = 0; i < 4; i++) {
2209 int size = dsi.vc[i].fifo_size;
2211 if (add + size > 4) {
2212 DSSERR("Illegal FIFO configuration\n");
2216 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2218 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2222 dsi_write_reg(DSI_RX_FIFO_VC_SIZE, r);
2225 static int dsi_force_tx_stop_mode_io(void)
2229 r = dsi_read_reg(DSI_TIMING1);
2230 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2231 dsi_write_reg(DSI_TIMING1, r);
2233 if (wait_for_bit_change(DSI_TIMING1, 15, 0) != 0) {
2234 DSSERR("TX_STOP bit not going down\n");
2241 static bool dsi_vc_is_enabled(int channel)
2243 return REG_GET(DSI_VC_CTRL(channel), 0, 0);
2246 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2248 const int channel = dsi.update_channel;
2249 u8 bit = dsi.te_enabled ? 30 : 31;
2251 if (REG_GET(DSI_VC_TE(channel), bit, bit) == 0)
2252 complete((struct completion *)data);
2255 static int dsi_sync_vc_vp(int channel)
2260 DECLARE_COMPLETION_ONSTACK(completion);
2262 bit = dsi.te_enabled ? 30 : 31;
2264 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_vp,
2265 &completion, DSI_VC_IRQ_PACKET_SENT);
2269 /* Wait for completion only if TE_EN/TE_START is still set */
2270 if (REG_GET(DSI_VC_TE(channel), bit, bit)) {
2271 if (wait_for_completion_timeout(&completion,
2272 msecs_to_jiffies(10)) == 0) {
2273 DSSERR("Failed to complete previous frame transfer\n");
2279 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp,
2280 &completion, DSI_VC_IRQ_PACKET_SENT);
2284 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_vp, &completion,
2285 DSI_VC_IRQ_PACKET_SENT);
2290 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2292 const int channel = dsi.update_channel;
2294 if (REG_GET(DSI_VC_CTRL(channel), 5, 5) == 0)
2295 complete((struct completion *)data);
2298 static int dsi_sync_vc_l4(int channel)
2302 DECLARE_COMPLETION_ONSTACK(completion);
2304 r = dsi_register_isr_vc(channel, dsi_packet_sent_handler_l4,
2305 &completion, DSI_VC_IRQ_PACKET_SENT);
2309 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2310 if (REG_GET(DSI_VC_CTRL(channel), 5, 5)) {
2311 if (wait_for_completion_timeout(&completion,
2312 msecs_to_jiffies(10)) == 0) {
2313 DSSERR("Failed to complete previous l4 transfer\n");
2319 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2320 &completion, DSI_VC_IRQ_PACKET_SENT);
2324 dsi_unregister_isr_vc(channel, dsi_packet_sent_handler_l4,
2325 &completion, DSI_VC_IRQ_PACKET_SENT);
2330 static int dsi_sync_vc(int channel)
2332 WARN_ON(!dsi_bus_is_locked());
2334 WARN_ON(in_interrupt());
2336 if (!dsi_vc_is_enabled(channel))
2339 switch (dsi.vc[channel].mode) {
2340 case DSI_VC_MODE_VP:
2341 return dsi_sync_vc_vp(channel);
2342 case DSI_VC_MODE_L4:
2343 return dsi_sync_vc_l4(channel);
2349 static int dsi_vc_enable(int channel, bool enable)
2351 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2354 enable = enable ? 1 : 0;
2356 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 0, 0);
2358 if (wait_for_bit_change(DSI_VC_CTRL(channel), 0, enable) != enable) {
2359 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2366 static void dsi_vc_initial_config(int channel)
2370 DSSDBGF("%d", channel);
2372 r = dsi_read_reg(DSI_VC_CTRL(channel));
2374 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2375 DSSERR("VC(%d) busy when trying to configure it!\n",
2378 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2379 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2380 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2381 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2382 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2383 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2384 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2385 if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH))
2386 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2388 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2389 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2391 dsi_write_reg(DSI_VC_CTRL(channel), r);
2394 static int dsi_vc_config_l4(int channel)
2396 if (dsi.vc[channel].mode == DSI_VC_MODE_L4)
2399 DSSDBGF("%d", channel);
2401 dsi_sync_vc(channel);
2403 dsi_vc_enable(channel, 0);
2406 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2407 DSSERR("vc(%d) busy when trying to config for L4\n", channel);
2411 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 1, 1); /* SOURCE, 0 = L4 */
2413 /* DCS_CMD_ENABLE */
2414 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2415 REG_FLD_MOD(DSI_VC_CTRL(channel), 0, 30, 30);
2417 dsi_vc_enable(channel, 1);
2419 dsi.vc[channel].mode = DSI_VC_MODE_L4;
2424 static int dsi_vc_config_vp(int channel)
2426 if (dsi.vc[channel].mode == DSI_VC_MODE_VP)
2429 DSSDBGF("%d", channel);
2431 dsi_sync_vc(channel);
2433 dsi_vc_enable(channel, 0);
2436 if (wait_for_bit_change(DSI_VC_CTRL(channel), 15, 0) != 0) {
2437 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2441 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 1, 1); /* SOURCE, 1 = video port */
2443 /* DCS_CMD_ENABLE */
2444 if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC))
2445 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 30, 30);
2447 dsi_vc_enable(channel, 1);
2449 dsi.vc[channel].mode = DSI_VC_MODE_VP;
2455 void omapdss_dsi_vc_enable_hs(int channel, bool enable)
2457 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2459 WARN_ON(!dsi_bus_is_locked());
2461 dsi_vc_enable(channel, 0);
2464 REG_FLD_MOD(DSI_VC_CTRL(channel), enable, 9, 9);
2466 dsi_vc_enable(channel, 1);
2469 dsi_force_tx_stop_mode_io();
2471 EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs);
2473 static void dsi_vc_flush_long_data(int channel)
2475 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2477 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2478 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2482 (val >> 24) & 0xff);
2486 static void dsi_show_rx_ack_with_err(u16 err)
2488 DSSERR("\tACK with ERROR (%#x):\n", err);
2490 DSSERR("\t\tSoT Error\n");
2492 DSSERR("\t\tSoT Sync Error\n");
2494 DSSERR("\t\tEoT Sync Error\n");
2496 DSSERR("\t\tEscape Mode Entry Command Error\n");
2498 DSSERR("\t\tLP Transmit Sync Error\n");
2500 DSSERR("\t\tHS Receive Timeout Error\n");
2502 DSSERR("\t\tFalse Control Error\n");
2504 DSSERR("\t\t(reserved7)\n");
2506 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2508 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2509 if (err & (1 << 10))
2510 DSSERR("\t\tChecksum Error\n");
2511 if (err & (1 << 11))
2512 DSSERR("\t\tData type not recognized\n");
2513 if (err & (1 << 12))
2514 DSSERR("\t\tInvalid VC ID\n");
2515 if (err & (1 << 13))
2516 DSSERR("\t\tInvalid Transmission Length\n");
2517 if (err & (1 << 14))
2518 DSSERR("\t\t(reserved14)\n");
2519 if (err & (1 << 15))
2520 DSSERR("\t\tDSI Protocol Violation\n");
2523 static u16 dsi_vc_flush_receive_data(int channel)
2525 /* RX_FIFO_NOT_EMPTY */
2526 while (REG_GET(DSI_VC_CTRL(channel), 20, 20)) {
2529 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2530 DSSERR("\trawval %#08x\n", val);
2531 dt = FLD_GET(val, 5, 0);
2532 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2533 u16 err = FLD_GET(val, 23, 8);
2534 dsi_show_rx_ack_with_err(err);
2535 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2536 DSSERR("\tDCS short response, 1 byte: %#x\n",
2537 FLD_GET(val, 23, 8));
2538 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2539 DSSERR("\tDCS short response, 2 byte: %#x\n",
2540 FLD_GET(val, 23, 8));
2541 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2542 DSSERR("\tDCS long response, len %d\n",
2543 FLD_GET(val, 23, 8));
2544 dsi_vc_flush_long_data(channel);
2546 DSSERR("\tunknown datatype 0x%02x\n", dt);
2552 static int dsi_vc_send_bta(int channel)
2554 if (dsi.debug_write || dsi.debug_read)
2555 DSSDBG("dsi_vc_send_bta %d\n", channel);
2557 WARN_ON(!dsi_bus_is_locked());
2559 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2560 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2561 dsi_vc_flush_receive_data(channel);
2564 REG_FLD_MOD(DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2569 int dsi_vc_send_bta_sync(int channel)
2571 DECLARE_COMPLETION_ONSTACK(completion);
2575 r = dsi_register_isr_vc(channel, dsi_completion_handler,
2576 &completion, DSI_VC_IRQ_BTA);
2580 r = dsi_register_isr(dsi_completion_handler, &completion,
2581 DSI_IRQ_ERROR_MASK);
2585 r = dsi_vc_send_bta(channel);
2589 if (wait_for_completion_timeout(&completion,
2590 msecs_to_jiffies(500)) == 0) {
2591 DSSERR("Failed to receive BTA\n");
2596 err = dsi_get_errors();
2598 DSSERR("Error while sending BTA: %x\n", err);
2603 dsi_unregister_isr(dsi_completion_handler, &completion,
2604 DSI_IRQ_ERROR_MASK);
2606 dsi_unregister_isr_vc(channel, dsi_completion_handler,
2607 &completion, DSI_VC_IRQ_BTA);
2611 EXPORT_SYMBOL(dsi_vc_send_bta_sync);
2613 static inline void dsi_vc_write_long_header(int channel, u8 data_type,
2619 WARN_ON(!dsi_bus_is_locked());
2621 data_id = data_type | dsi.vc[channel].vc_id << 6;
2623 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2624 FLD_VAL(ecc, 31, 24);
2626 dsi_write_reg(DSI_VC_LONG_PACKET_HEADER(channel), val);
2629 static inline void dsi_vc_write_long_payload(int channel,
2630 u8 b1, u8 b2, u8 b3, u8 b4)
2634 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2636 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2637 b1, b2, b3, b4, val); */
2639 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2642 static int dsi_vc_send_long(int channel, u8 data_type, u8 *data, u16 len,
2651 if (dsi.debug_write)
2652 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2655 if (dsi.vc[channel].fifo_size * 32 * 4 < len + 4) {
2656 DSSERR("unable to send long packet: packet too long.\n");
2660 dsi_vc_config_l4(channel);
2662 dsi_vc_write_long_header(channel, data_type, len, ecc);
2665 for (i = 0; i < len >> 2; i++) {
2666 if (dsi.debug_write)
2667 DSSDBG("\tsending full packet %d\n", i);
2674 dsi_vc_write_long_payload(channel, b1, b2, b3, b4);
2679 b1 = 0; b2 = 0; b3 = 0;
2681 if (dsi.debug_write)
2682 DSSDBG("\tsending remainder bytes %d\n", i);
2699 dsi_vc_write_long_payload(channel, b1, b2, b3, 0);
2705 static int dsi_vc_send_short(int channel, u8 data_type, u16 data, u8 ecc)
2710 WARN_ON(!dsi_bus_is_locked());
2712 if (dsi.debug_write)
2713 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2715 data_type, data & 0xff, (data >> 8) & 0xff);
2717 dsi_vc_config_l4(channel);
2719 if (FLD_GET(dsi_read_reg(DSI_VC_CTRL(channel)), 16, 16)) {
2720 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2724 data_id = data_type | dsi.vc[channel].vc_id << 6;
2726 r = (data_id << 0) | (data << 8) | (ecc << 24);
2728 dsi_write_reg(DSI_VC_SHORT_PACKET_HEADER(channel), r);
2733 int dsi_vc_send_null(int channel)
2735 u8 nullpkg[] = {0, 0, 0, 0};
2736 return dsi_vc_send_long(channel, DSI_DT_NULL_PACKET, nullpkg, 4, 0);
2738 EXPORT_SYMBOL(dsi_vc_send_null);
2740 int dsi_vc_dcs_write_nosync(int channel, u8 *data, int len)
2747 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_0,
2749 } else if (len == 2) {
2750 r = dsi_vc_send_short(channel, DSI_DT_DCS_SHORT_WRITE_1,
2751 data[0] | (data[1] << 8), 0);
2753 /* 0x39 = DCS Long Write */
2754 r = dsi_vc_send_long(channel, DSI_DT_DCS_LONG_WRITE,
2760 EXPORT_SYMBOL(dsi_vc_dcs_write_nosync);
2762 int dsi_vc_dcs_write(int channel, u8 *data, int len)
2766 r = dsi_vc_dcs_write_nosync(channel, data, len);
2770 r = dsi_vc_send_bta_sync(channel);
2774 if (REG_GET(DSI_VC_CTRL(channel), 20, 20)) { /* RX_FIFO_NOT_EMPTY */
2775 DSSERR("rx fifo not empty after write, dumping data:\n");
2776 dsi_vc_flush_receive_data(channel);
2783 DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n",
2784 channel, data[0], len);
2787 EXPORT_SYMBOL(dsi_vc_dcs_write);
2789 int dsi_vc_dcs_write_0(int channel, u8 dcs_cmd)
2791 return dsi_vc_dcs_write(channel, &dcs_cmd, 1);
2793 EXPORT_SYMBOL(dsi_vc_dcs_write_0);
2795 int dsi_vc_dcs_write_1(int channel, u8 dcs_cmd, u8 param)
2800 return dsi_vc_dcs_write(channel, buf, 2);
2802 EXPORT_SYMBOL(dsi_vc_dcs_write_1);
2804 int dsi_vc_dcs_read(int channel, u8 dcs_cmd, u8 *buf, int buflen)
2811 DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd);
2813 r = dsi_vc_send_short(channel, DSI_DT_DCS_READ, dcs_cmd, 0);
2817 r = dsi_vc_send_bta_sync(channel);
2821 /* RX_FIFO_NOT_EMPTY */
2822 if (REG_GET(DSI_VC_CTRL(channel), 20, 20) == 0) {
2823 DSSERR("RX fifo empty when trying to read.\n");
2828 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2830 DSSDBG("\theader: %08x\n", val);
2831 dt = FLD_GET(val, 5, 0);
2832 if (dt == DSI_DT_RX_ACK_WITH_ERR) {
2833 u16 err = FLD_GET(val, 23, 8);
2834 dsi_show_rx_ack_with_err(err);
2838 } else if (dt == DSI_DT_RX_SHORT_READ_1) {
2839 u8 data = FLD_GET(val, 15, 8);
2841 DSSDBG("\tDCS short response, 1 byte: %02x\n", data);
2851 } else if (dt == DSI_DT_RX_SHORT_READ_2) {
2852 u16 data = FLD_GET(val, 23, 8);
2854 DSSDBG("\tDCS short response, 2 byte: %04x\n", data);
2861 buf[0] = data & 0xff;
2862 buf[1] = (data >> 8) & 0xff;
2865 } else if (dt == DSI_DT_RX_DCS_LONG_READ) {
2867 int len = FLD_GET(val, 23, 8);
2869 DSSDBG("\tDCS long response, len %d\n", len);
2876 /* two byte checksum ends the packet, not included in len */
2877 for (w = 0; w < len + 2;) {
2879 val = dsi_read_reg(DSI_VC_SHORT_PACKET_HEADER(channel));
2881 DSSDBG("\t\t%02x %02x %02x %02x\n",
2885 (val >> 24) & 0xff);
2887 for (b = 0; b < 4; ++b) {
2889 buf[w] = (val >> (b * 8)) & 0xff;
2890 /* we discard the 2 byte checksum */
2897 DSSERR("\tunknown datatype 0x%02x\n", dt);
2904 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n",
2909 EXPORT_SYMBOL(dsi_vc_dcs_read);
2911 int dsi_vc_dcs_read_1(int channel, u8 dcs_cmd, u8 *data)
2915 r = dsi_vc_dcs_read(channel, dcs_cmd, data, 1);
2925 EXPORT_SYMBOL(dsi_vc_dcs_read_1);
2927 int dsi_vc_dcs_read_2(int channel, u8 dcs_cmd, u8 *data1, u8 *data2)
2932 r = dsi_vc_dcs_read(channel, dcs_cmd, buf, 2);
2945 EXPORT_SYMBOL(dsi_vc_dcs_read_2);
2947 int dsi_vc_set_max_rx_packet_size(int channel, u16 len)
2949 return dsi_vc_send_short(channel, DSI_DT_SET_MAX_RET_PKG_SIZE,
2952 EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size);
2954 static int dsi_enter_ulps(void)
2956 DECLARE_COMPLETION_ONSTACK(completion);
2961 WARN_ON(!dsi_bus_is_locked());
2963 WARN_ON(dsi.ulps_enabled);
2965 if (dsi.ulps_enabled)
2968 if (REG_GET(DSI_CLK_CTRL, 13, 13)) {
2969 DSSERR("DDR_CLK_ALWAYS_ON enabled when entering ULPS\n");
2978 dsi_force_tx_stop_mode_io();
2980 dsi_vc_enable(0, false);
2981 dsi_vc_enable(1, false);
2982 dsi_vc_enable(2, false);
2983 dsi_vc_enable(3, false);
2985 if (REG_GET(DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
2986 DSSERR("HS busy when enabling ULPS\n");
2990 if (REG_GET(DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
2991 DSSERR("LP busy when enabling ULPS\n");
2995 r = dsi_register_isr_cio(dsi_completion_handler, &completion,
2996 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3000 /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
3001 /* LANEx_ULPS_SIG2 */
3002 REG_FLD_MOD(DSI_COMPLEXIO_CFG2, (1 << 0) | (1 << 1) | (1 << 2), 7, 5);
3004 if (wait_for_completion_timeout(&completion,
3005 msecs_to_jiffies(1000)) == 0) {
3006 DSSERR("ULPS enable timeout\n");
3011 dsi_unregister_isr_cio(dsi_completion_handler, &completion,
3012 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3014 dsi_cio_power(DSI_COMPLEXIO_POWER_ULPS);
3016 dsi_if_enable(false);
3018 dsi.ulps_enabled = true;
3023 dsi_unregister_isr_cio(dsi_completion_handler, &completion,
3024 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3028 static void dsi_set_lp_rx_timeout(unsigned ticks, bool x4, bool x16)
3031 unsigned long total_ticks;
3034 BUG_ON(ticks > 0x1fff);
3036 /* ticks in DSI_FCK */
3037 fck = dsi_fclk_rate();
3039 r = dsi_read_reg(DSI_TIMING2);
3040 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
3041 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
3042 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
3043 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
3044 dsi_write_reg(DSI_TIMING2, r);
3046 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3048 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3050 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3051 (total_ticks * 1000) / (fck / 1000 / 1000));
3054 static void dsi_set_ta_timeout(unsigned ticks, bool x8, bool x16)
3057 unsigned long total_ticks;
3060 BUG_ON(ticks > 0x1fff);
3062 /* ticks in DSI_FCK */
3063 fck = dsi_fclk_rate();
3065 r = dsi_read_reg(DSI_TIMING1);
3066 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
3067 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
3068 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
3069 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
3070 dsi_write_reg(DSI_TIMING1, r);
3072 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
3074 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
3076 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
3077 (total_ticks * 1000) / (fck / 1000 / 1000));
3080 static void dsi_set_stop_state_counter(unsigned ticks, bool x4, bool x16)
3083 unsigned long total_ticks;
3086 BUG_ON(ticks > 0x1fff);
3088 /* ticks in DSI_FCK */
3089 fck = dsi_fclk_rate();
3091 r = dsi_read_reg(DSI_TIMING1);
3092 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
3093 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
3094 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
3095 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
3096 dsi_write_reg(DSI_TIMING1, r);
3098 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3100 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
3102 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3103 (total_ticks * 1000) / (fck / 1000 / 1000));
3106 static void dsi_set_hs_tx_timeout(unsigned ticks, bool x4, bool x16)
3109 unsigned long total_ticks;
3112 BUG_ON(ticks > 0x1fff);
3114 /* ticks in TxByteClkHS */
3115 fck = dsi_get_txbyteclkhs();
3117 r = dsi_read_reg(DSI_TIMING2);
3118 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
3119 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
3120 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
3121 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
3122 dsi_write_reg(DSI_TIMING2, r);
3124 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3126 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3128 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3129 (total_ticks * 1000) / (fck / 1000 / 1000));
3131 static int dsi_proto_config(struct omap_dss_device *dssdev)
3136 dsi_config_tx_fifo(DSI_FIFO_SIZE_32,
3141 dsi_config_rx_fifo(DSI_FIFO_SIZE_32,
3146 /* XXX what values for the timeouts? */
3147 dsi_set_stop_state_counter(0x1000, false, false);
3148 dsi_set_ta_timeout(0x1fff, true, true);
3149 dsi_set_lp_rx_timeout(0x1fff, true, true);
3150 dsi_set_hs_tx_timeout(0x1fff, true, true);
3152 switch (dssdev->ctrl.pixel_size) {
3166 r = dsi_read_reg(DSI_CTRL);
3167 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
3168 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
3169 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
3170 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
3171 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
3172 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
3173 r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */
3174 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
3175 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
3176 if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) {
3177 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
3178 /* DCS_CMD_CODE, 1=start, 0=continue */
3179 r = FLD_MOD(r, 0, 25, 25);
3182 dsi_write_reg(DSI_CTRL, r);
3184 dsi_vc_initial_config(0);
3185 dsi_vc_initial_config(1);
3186 dsi_vc_initial_config(2);
3187 dsi_vc_initial_config(3);
3192 static void dsi_proto_timings(struct omap_dss_device *dssdev)
3194 unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail;
3195 unsigned tclk_pre, tclk_post;
3196 unsigned ths_prepare, ths_prepare_ths_zero, ths_zero;
3197 unsigned ths_trail, ths_exit;
3198 unsigned ddr_clk_pre, ddr_clk_post;
3199 unsigned enter_hs_mode_lat, exit_hs_mode_lat;
3203 r = dsi_read_reg(DSI_DSIPHY_CFG0);
3204 ths_prepare = FLD_GET(r, 31, 24);
3205 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
3206 ths_zero = ths_prepare_ths_zero - ths_prepare;
3207 ths_trail = FLD_GET(r, 15, 8);
3208 ths_exit = FLD_GET(r, 7, 0);
3210 r = dsi_read_reg(DSI_DSIPHY_CFG1);
3211 tlpx = FLD_GET(r, 22, 16) * 2;
3212 tclk_trail = FLD_GET(r, 15, 8);
3213 tclk_zero = FLD_GET(r, 7, 0);
3215 r = dsi_read_reg(DSI_DSIPHY_CFG2);
3216 tclk_prepare = FLD_GET(r, 7, 0);
3220 /* min 60ns + 52*UI */
3221 tclk_post = ns2ddr(60) + 26;
3223 /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */
3224 if (dssdev->phy.dsi.data1_lane != 0 &&
3225 dssdev->phy.dsi.data2_lane != 0)
3230 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3232 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3234 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3235 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
3237 r = dsi_read_reg(DSI_CLK_TIMING);
3238 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
3239 r = FLD_MOD(r, ddr_clk_post, 7, 0);
3240 dsi_write_reg(DSI_CLK_TIMING, r);
3242 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
3246 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
3247 DIV_ROUND_UP(ths_prepare, 4) +
3248 DIV_ROUND_UP(ths_zero + 3, 4);
3250 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
3252 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
3253 FLD_VAL(exit_hs_mode_lat, 15, 0);
3254 dsi_write_reg(DSI_VM_TIMING7, r);
3256 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
3257 enter_hs_mode_lat, exit_hs_mode_lat);
3261 #define DSI_DECL_VARS \
3262 int __dsi_cb = 0; u32 __dsi_cv = 0;
3264 #define DSI_FLUSH(ch) \
3265 if (__dsi_cb > 0) { \
3266 /*DSSDBG("sending long packet %#010x\n", __dsi_cv);*/ \
3267 dsi_write_reg(DSI_VC_LONG_PACKET_PAYLOAD(ch), __dsi_cv); \
3268 __dsi_cb = __dsi_cv = 0; \
3271 #define DSI_PUSH(ch, data) \
3273 __dsi_cv |= (data) << (__dsi_cb * 8); \
3274 /*DSSDBG("cv = %#010x, cb = %d\n", __dsi_cv, __dsi_cb);*/ \
3275 if (++__dsi_cb > 3) \
3279 static int dsi_update_screen_l4(struct omap_dss_device *dssdev,
3280 int x, int y, int w, int h)
3282 /* Note: supports only 24bit colors in 32bit container */
3284 int fifo_stalls = 0;
3285 int max_dsi_packet_size;
3286 int max_data_per_packet;
3287 int max_pixels_per_packet;
3289 int bytespp = dssdev->ctrl.pixel_size / 8;
3295 struct omap_overlay *ovl;
3299 DSSDBG("dsi_update_screen_l4 (%d,%d %dx%d)\n",
3302 ovl = dssdev->manager->overlays[0];
3304 if (ovl->info.color_mode != OMAP_DSS_COLOR_RGB24U)
3307 if (dssdev->ctrl.pixel_size != 24)
3310 scr_width = ovl->info.screen_width;
3311 data = ovl->info.vaddr;
3313 start_offset = scr_width * y + x;
3314 horiz_inc = scr_width - w;
3317 /* We need header(4) + DCSCMD(1) + pixels(numpix*bytespp) bytes
3320 /* When using CPU, max long packet size is TX buffer size */
3321 max_dsi_packet_size = dsi.vc[0].fifo_size * 32 * 4;
3323 /* we seem to get better perf if we divide the tx fifo to half,
3324 and while the other half is being sent, we fill the other half
3325 max_dsi_packet_size /= 2; */
3327 max_data_per_packet = max_dsi_packet_size - 4 - 1;
3329 max_pixels_per_packet = max_data_per_packet / bytespp;
3331 DSSDBG("max_pixels_per_packet %d\n", max_pixels_per_packet);
3333 pixels_left = w * h;
3335 DSSDBG("total pixels %d\n", pixels_left);
3337 data += start_offset;
3339 while (pixels_left > 0) {
3340 /* 0x2c = write_memory_start */
3341 /* 0x3c = write_memory_continue */
3342 u8 dcs_cmd = first ? 0x2c : 0x3c;
3348 /* using fifo not empty */
3349 /* TX_FIFO_NOT_EMPTY */
3350 while (FLD_GET(dsi_read_reg(DSI_VC_CTRL(0)), 5, 5)) {
3352 if (fifo_stalls > 0xfffff) {
3353 DSSERR("fifo stalls overflow, pixels left %d\n",
3361 /* using fifo emptiness */
3362 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 <
3363 max_dsi_packet_size) {
3365 if (fifo_stalls > 0xfffff) {
3366 DSSERR("fifo stalls overflow, pixels left %d\n",
3373 while ((REG_GET(DSI_TX_FIFO_VC_EMPTINESS, 7, 0)+1)*4 == 0) {
3375 if (fifo_stalls > 0xfffff) {
3376 DSSERR("fifo stalls overflow, pixels left %d\n",
3383 pixels = min(max_pixels_per_packet, pixels_left);
3385 pixels_left -= pixels;
3387 dsi_vc_write_long_header(0, DSI_DT_DCS_LONG_WRITE,
3388 1 + pixels * bytespp, 0);
3390 DSI_PUSH(0, dcs_cmd);
3392 while (pixels-- > 0) {
3393 u32 pix = __raw_readl(data++);
3395 DSI_PUSH(0, (pix >> 16) & 0xff);
3396 DSI_PUSH(0, (pix >> 8) & 0xff);
3397 DSI_PUSH(0, (pix >> 0) & 0xff);
3400 if (current_x == x+w) {
3412 static void dsi_update_screen_dispc(struct omap_dss_device *dssdev,
3413 u16 x, u16 y, u16 w, u16 h)
3419 unsigned packet_payload;
3420 unsigned packet_len;
3423 const unsigned channel = dsi.update_channel;
3424 /* line buffer is 1024 x 24bits */
3425 /* XXX: for some reason using full buffer size causes considerable TX
3426 * slowdown with update sizes that fill the whole buffer */
3427 const unsigned line_buf_size = 1023 * 3;
3429 DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n",
3432 dsi_vc_config_vp(channel);
3434 bytespp = dssdev->ctrl.pixel_size / 8;
3435 bytespl = w * bytespp;
3436 bytespf = bytespl * h;
3438 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3439 * number of lines in a packet. See errata about VP_CLK_RATIO */
3441 if (bytespf < line_buf_size)
3442 packet_payload = bytespf;
3444 packet_payload = (line_buf_size) / bytespl * bytespl;
3446 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3447 total_len = (bytespf / packet_payload) * packet_len;
3449 if (bytespf % packet_payload)
3450 total_len += (bytespf % packet_payload) + 1;
3452 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3453 dsi_write_reg(DSI_VC_TE(channel), l);
3455 dsi_vc_write_long_header(channel, DSI_DT_DCS_LONG_WRITE, packet_len, 0);
3458 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3460 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3461 dsi_write_reg(DSI_VC_TE(channel), l);
3463 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3464 * because DSS interrupts are not capable of waking up the CPU and the
3465 * framedone interrupt could be delayed for quite a long time. I think
3466 * the same goes for any DSS interrupts, but for some reason I have not
3467 * seen the problem anywhere else than here.
3469 dispc_disable_sidle();
3471 dsi_perf_mark_start();
3473 r = queue_delayed_work(dsi.workqueue, &dsi.framedone_timeout_work,
3474 msecs_to_jiffies(250));
3477 dss_start_update(dssdev);
3479 if (dsi.te_enabled) {
3480 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3481 * for TE is longer than the timer allows */
3482 REG_FLD_MOD(DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3484 dsi_vc_send_bta(channel);
3486 #ifdef DSI_CATCH_MISSING_TE
3487 mod_timer(&dsi.te_timer, jiffies + msecs_to_jiffies(250));
3492 #ifdef DSI_CATCH_MISSING_TE
3493 static void dsi_te_timeout(unsigned long arg)
3495 DSSERR("TE not received for 250ms!\n");
3499 static void dsi_handle_framedone(int error)
3501 /* SIDLEMODE back to smart-idle */
3502 dispc_enable_sidle();
3504 if (dsi.te_enabled) {
3505 /* enable LP_RX_TO again after the TE */
3506 REG_FLD_MOD(DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
3509 dsi.framedone_callback(error, dsi.framedone_data);
3512 dsi_perf_show("DISPC");
3515 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
3517 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
3518 * 250ms which would conflict with this timeout work. What should be
3519 * done is first cancel the transfer on the HW, and then cancel the
3520 * possibly scheduled framedone work. However, cancelling the transfer
3521 * on the HW is buggy, and would probably require resetting the whole
3524 DSSERR("Framedone not received for 250ms!\n");
3526 dsi_handle_framedone(-ETIMEDOUT);
3529 static void dsi_framedone_irq_callback(void *data, u32 mask)
3531 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
3532 * turns itself off. However, DSI still has the pixels in its buffers,
3533 * and is sending the data.
3536 __cancel_delayed_work(&dsi.framedone_timeout_work);
3538 dsi_handle_framedone(0);
3540 #ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC
3541 dispc_fake_vsync_irq();
3545 int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
3546 u16 *x, u16 *y, u16 *w, u16 *h,
3547 bool enlarge_update_area)
3551 dssdev->driver->get_resolution(dssdev, &dw, &dh);
3553 if (*x > dw || *y > dh)
3565 if (*w == 0 || *h == 0)
3568 dsi_perf_mark_setup();
3570 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3571 dss_setup_partial_planes(dssdev, x, y, w, h,
3572 enlarge_update_area);
3573 dispc_set_lcd_size(dssdev->manager->id, *w, *h);
3578 EXPORT_SYMBOL(omap_dsi_prepare_update);
3580 int omap_dsi_update(struct omap_dss_device *dssdev,
3582 u16 x, u16 y, u16 w, u16 h,
3583 void (*callback)(int, void *), void *data)
3585 dsi.update_channel = channel;
3587 /* OMAP DSS cannot send updates of odd widths.
3588 * omap_dsi_prepare_update() makes the widths even, but add a BUG_ON
3589 * here to make sure we catch erroneous updates. Otherwise we'll only
3590 * see rather obscure HW error happening, as DSS halts. */
3593 if (dssdev->manager->caps & OMAP_DSS_OVL_MGR_CAP_DISPC) {
3594 dsi.framedone_callback = callback;
3595 dsi.framedone_data = data;
3597 dsi.update_region.x = x;
3598 dsi.update_region.y = y;
3599 dsi.update_region.w = w;
3600 dsi.update_region.h = h;
3601 dsi.update_region.device = dssdev;
3603 dsi_update_screen_dispc(dssdev, x, y, w, h);
3607 r = dsi_update_screen_l4(dssdev, x, y, w, h);
3611 dsi_perf_show("L4");
3617 EXPORT_SYMBOL(omap_dsi_update);
3621 static int dsi_display_init_dispc(struct omap_dss_device *dssdev)
3625 r = omap_dispc_register_isr(dsi_framedone_irq_callback, NULL,
3626 DISPC_IRQ_FRAMEDONE);
3628 DSSERR("can't get FRAMEDONE irq\n");
3632 dispc_set_lcd_display_type(dssdev->manager->id,
3633 OMAP_DSS_LCD_DISPLAY_TFT);
3635 dispc_set_parallel_interface_mode(dssdev->manager->id,
3636 OMAP_DSS_PARALLELMODE_DSI);
3637 dispc_enable_fifohandcheck(dssdev->manager->id, 1);
3639 dispc_set_tft_data_lines(dssdev->manager->id, dssdev->ctrl.pixel_size);
3642 struct omap_video_timings timings = {
3651 dispc_set_lcd_timings(dssdev->manager->id, &timings);
3657 static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev)
3659 omap_dispc_unregister_isr(dsi_framedone_irq_callback, NULL,
3660 DISPC_IRQ_FRAMEDONE);
3663 static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev)
3665 struct dsi_clock_info cinfo;
3668 /* we always use DSS_CLK_SYSCK as input clock */
3669 cinfo.use_sys_clk = true;
3670 cinfo.regn = dssdev->clocks.dsi.regn;
3671 cinfo.regm = dssdev->clocks.dsi.regm;
3672 cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc;
3673 cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi;
3674 r = dsi_calc_clock_rates(dssdev, &cinfo);
3676 DSSERR("Failed to calc dsi clocks\n");
3680 r = dsi_pll_set_clock_div(&cinfo);
3682 DSSERR("Failed to set dsi clocks\n");
3689 static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev)
3691 struct dispc_clock_info dispc_cinfo;
3693 unsigned long long fck;
3695 fck = dsi_get_pll_hsdiv_dispc_rate();
3697 dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div;
3698 dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div;
3700 r = dispc_calc_clock_rates(fck, &dispc_cinfo);
3702 DSSERR("Failed to calc dispc clocks\n");
3706 r = dispc_set_clock_div(dssdev->manager->id, &dispc_cinfo);
3708 DSSERR("Failed to set dispc clocks\n");
3715 static int dsi_display_init_dsi(struct omap_dss_device *dssdev)
3719 r = dsi_pll_init(dssdev, true, true);
3723 r = dsi_configure_dsi_clocks(dssdev);
3727 dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src);
3728 dss_select_dsi_clk_source(dssdev->clocks.dsi.dsi_fclk_src);
3729 dss_select_lcd_clk_source(dssdev->manager->id,
3730 dssdev->clocks.dispc.channel.lcd_clk_src);
3734 r = dsi_configure_dispc_clocks(dssdev);
3738 r = dsi_cio_init(dssdev);
3742 _dsi_print_reset_status();
3744 dsi_proto_timings(dssdev);
3745 dsi_set_lp_clk_divisor(dssdev);
3748 _dsi_print_reset_status();
3750 r = dsi_proto_config(dssdev);
3754 /* enable interface */
3755 dsi_vc_enable(0, 1);
3756 dsi_vc_enable(1, 1);
3757 dsi_vc_enable(2, 1);
3758 dsi_vc_enable(3, 1);
3760 dsi_force_tx_stop_mode_io();
3766 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3767 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3769 dsi_pll_uninit(true);
3774 static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev,
3775 bool disconnect_lanes, bool enter_ulps)
3777 if (enter_ulps && !dsi.ulps_enabled)
3780 /* disable interface */
3782 dsi_vc_enable(0, 0);
3783 dsi_vc_enable(1, 0);
3784 dsi_vc_enable(2, 0);
3785 dsi_vc_enable(3, 0);
3787 dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK);
3788 dss_select_dsi_clk_source(OMAP_DSS_CLK_SRC_FCK);
3790 dsi_pll_uninit(disconnect_lanes);
3793 static int dsi_core_init(void)
3796 REG_FLD_MOD(DSI_SYSCONFIG, 1, 0, 0);
3799 REG_FLD_MOD(DSI_SYSCONFIG, 1, 2, 2);
3801 /* SIDLEMODE smart-idle */
3802 REG_FLD_MOD(DSI_SYSCONFIG, 2, 4, 3);
3804 _dsi_initialize_irq();
3809 int omapdss_dsi_display_enable(struct omap_dss_device *dssdev)
3813 DSSDBG("dsi_display_enable\n");
3815 WARN_ON(!dsi_bus_is_locked());
3817 mutex_lock(&dsi.lock);
3819 r = omap_dss_start_device(dssdev);
3821 DSSERR("failed to start device\n");
3826 dsi_enable_pll_clock(1);
3834 r = dsi_display_init_dispc(dssdev);
3838 r = dsi_display_init_dsi(dssdev);
3842 mutex_unlock(&dsi.lock);
3847 dsi_display_uninit_dispc(dssdev);
3850 dsi_enable_pll_clock(0);
3851 omap_dss_stop_device(dssdev);
3853 mutex_unlock(&dsi.lock);
3854 DSSDBG("dsi_display_enable FAILED\n");
3857 EXPORT_SYMBOL(omapdss_dsi_display_enable);
3859 void omapdss_dsi_display_disable(struct omap_dss_device *dssdev,
3860 bool disconnect_lanes, bool enter_ulps)
3862 DSSDBG("dsi_display_disable\n");
3864 WARN_ON(!dsi_bus_is_locked());
3866 mutex_lock(&dsi.lock);
3868 dsi_display_uninit_dispc(dssdev);
3870 dsi_display_uninit_dsi(dssdev, disconnect_lanes, enter_ulps);
3873 dsi_enable_pll_clock(0);
3875 omap_dss_stop_device(dssdev);
3877 mutex_unlock(&dsi.lock);
3879 EXPORT_SYMBOL(omapdss_dsi_display_disable);
3881 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
3883 dsi.te_enabled = enable;
3886 EXPORT_SYMBOL(omapdss_dsi_enable_te);
3888 void dsi_get_overlay_fifo_thresholds(enum omap_plane plane,
3889 u32 fifo_size, enum omap_burst_size *burst_size,
3890 u32 *fifo_low, u32 *fifo_high)
3892 unsigned burst_size_bytes;
3894 *burst_size = OMAP_DSS_BURST_16x32;
3895 burst_size_bytes = 16 * 32 / 8;
3897 *fifo_high = fifo_size - burst_size_bytes;
3898 *fifo_low = fifo_size - burst_size_bytes * 2;
3901 int dsi_init_display(struct omap_dss_device *dssdev)
3903 DSSDBG("DSI init\n");
3905 /* XXX these should be figured out dynamically */
3906 dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE |
3907 OMAP_DSS_DISPLAY_CAP_TEAR_ELIM;
3909 if (dsi.vdds_dsi_reg == NULL) {
3910 struct regulator *vdds_dsi;
3912 vdds_dsi = regulator_get(&dsi.pdev->dev, "vdds_dsi");
3914 if (IS_ERR(vdds_dsi)) {
3915 DSSERR("can't get VDDS_DSI regulator\n");
3916 return PTR_ERR(vdds_dsi);
3919 dsi.vdds_dsi_reg = vdds_dsi;
3925 int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
3929 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
3930 if (!dsi.vc[i].dssdev) {
3931 dsi.vc[i].dssdev = dssdev;
3937 DSSERR("cannot get VC for display %s", dssdev->name);
3940 EXPORT_SYMBOL(omap_dsi_request_vc);
3942 int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
3944 if (vc_id < 0 || vc_id > 3) {
3945 DSSERR("VC ID out of range\n");
3949 if (channel < 0 || channel > 3) {
3950 DSSERR("Virtual Channel out of range\n");
3954 if (dsi.vc[channel].dssdev != dssdev) {
3955 DSSERR("Virtual Channel not allocated to display %s\n",
3960 dsi.vc[channel].vc_id = vc_id;
3964 EXPORT_SYMBOL(omap_dsi_set_vc_id);
3966 void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel)
3968 if ((channel >= 0 && channel <= 3) &&
3969 dsi.vc[channel].dssdev == dssdev) {
3970 dsi.vc[channel].dssdev = NULL;
3971 dsi.vc[channel].vc_id = 0;
3974 EXPORT_SYMBOL(omap_dsi_release_vc);
3976 void dsi_wait_pll_hsdiv_dispc_active(void)
3978 if (wait_for_bit_change(DSI_PLL_STATUS, 7, 1) != 1)
3979 DSSERR("%s (%s) not active\n",
3980 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC),
3981 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC));
3984 void dsi_wait_pll_hsdiv_dsi_active(void)
3986 if (wait_for_bit_change(DSI_PLL_STATUS, 8, 1) != 1)
3987 DSSERR("%s (%s) not active\n",
3988 dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI),
3989 dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI));
3992 static void dsi_calc_clock_param_ranges(void)
3994 dsi.regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN);
3995 dsi.regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM);
3996 dsi.regm_dispc_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC);
3997 dsi.regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI);
3998 dsi.fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT);
3999 dsi.fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT);
4000 dsi.lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV);
4003 static int dsi_init(struct platform_device *pdev)
4005 struct omap_display_platform_data *dss_plat_data;
4006 struct omap_dss_board_info *board_info;
4009 struct resource *dsi_mem;
4011 dss_plat_data = pdev->dev.platform_data;
4012 board_info = dss_plat_data->board_data;
4013 dsi.dsi_mux_pads = board_info->dsi_mux_pads;
4015 spin_lock_init(&dsi.irq_lock);
4016 spin_lock_init(&dsi.errors_lock);
4019 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
4020 spin_lock_init(&dsi.irq_stats_lock);
4021 dsi.irq_stats.last_reset = jiffies;
4024 mutex_init(&dsi.lock);
4025 sema_init(&dsi.bus_lock, 1);
4027 dsi.workqueue = create_singlethread_workqueue("dsi");
4028 if (dsi.workqueue == NULL)
4031 INIT_DELAYED_WORK_DEFERRABLE(&dsi.framedone_timeout_work,
4032 dsi_framedone_timeout_work_callback);
4034 #ifdef DSI_CATCH_MISSING_TE
4035 init_timer(&dsi.te_timer);
4036 dsi.te_timer.function = dsi_te_timeout;
4037 dsi.te_timer.data = 0;
4039 dsi_mem = platform_get_resource(dsi.pdev, IORESOURCE_MEM, 0);
4041 DSSERR("can't get IORESOURCE_MEM DSI\n");
4045 dsi.base = ioremap(dsi_mem->start, resource_size(dsi_mem));
4047 DSSERR("can't ioremap DSI\n");
4051 dsi.irq = platform_get_irq(dsi.pdev, 0);
4053 DSSERR("platform_get_irq failed\n");
4058 r = request_irq(dsi.irq, omap_dsi_irq_handler, IRQF_SHARED,
4059 "OMAP DSI1", dsi.pdev);
4061 DSSERR("request_irq failed\n");
4065 /* DSI VCs initialization */
4066 for (i = 0; i < ARRAY_SIZE(dsi.vc); i++) {
4067 dsi.vc[i].mode = DSI_VC_MODE_L4;
4068 dsi.vc[i].dssdev = NULL;
4069 dsi.vc[i].vc_id = 0;
4072 dsi_calc_clock_param_ranges();
4076 rev = dsi_read_reg(DSI_REVISION);
4077 dev_dbg(&pdev->dev, "OMAP DSI rev %d.%d\n",
4078 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
4086 destroy_workqueue(dsi.workqueue);
4090 static void dsi_exit(void)
4092 if (dsi.vdds_dsi_reg != NULL) {
4093 if (dsi.vdds_dsi_enabled) {
4094 regulator_disable(dsi.vdds_dsi_reg);
4095 dsi.vdds_dsi_enabled = false;
4098 regulator_put(dsi.vdds_dsi_reg);
4099 dsi.vdds_dsi_reg = NULL;
4102 free_irq(dsi.irq, dsi.pdev);
4105 destroy_workqueue(dsi.workqueue);
4107 DSSDBG("omap_dsi_exit\n");
4110 /* DSI1 HW IP initialisation */
4111 static int omap_dsi1hw_probe(struct platform_device *pdev)
4117 DSSERR("Failed to initialize DSI\n");
4124 static int omap_dsi1hw_remove(struct platform_device *pdev)
4127 WARN_ON(dsi.scp_clk_refcount > 0);
4131 static struct platform_driver omap_dsi1hw_driver = {
4132 .probe = omap_dsi1hw_probe,
4133 .remove = omap_dsi1hw_remove,
4135 .name = "omapdss_dsi1",
4136 .owner = THIS_MODULE,
4140 int dsi_init_platform_driver(void)
4142 return platform_driver_register(&omap_dsi1hw_driver);
4145 void dsi_uninit_platform_driver(void)
4147 return platform_driver_unregister(&omap_dsi1hw_driver);