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Russell King7bedaa52012-04-13 12:10:24 +01001#ifndef __LINUX_OMAP_DMA_H
2#define __LINUX_OMAP_DMA_H
Balaji T Kee526d52014-05-09 22:16:53 +05303#include <linux/omap-dmaengine.h>
Russell King7bedaa52012-04-13 12:10:24 +01004
Tony Lindgren45c3eb72012-11-30 08:41:50 -08005/*
6 * Legacy OMAP DMA handling defines and functions
7 *
8 * NOTE: Do not use these any longer.
9 *
10 * Use the generic dmaengine functions as defined in
11 * include/linux/dmaengine.h.
12 *
13 * Copyright (C) 2003 Nokia Corporation
14 * Author: Juha Yrjölä <juha.yrjola@nokia.com>
15 *
16 */
17
18#include <linux/platform_device.h>
19
20#define INT_DMA_LCD 25
21
22#define OMAP1_DMA_TOUT_IRQ (1 << 0)
23#define OMAP_DMA_DROP_IRQ (1 << 1)
24#define OMAP_DMA_HALF_IRQ (1 << 2)
25#define OMAP_DMA_FRAME_IRQ (1 << 3)
26#define OMAP_DMA_LAST_IRQ (1 << 4)
27#define OMAP_DMA_BLOCK_IRQ (1 << 5)
28#define OMAP1_DMA_SYNC_IRQ (1 << 6)
29#define OMAP2_DMA_PKT_IRQ (1 << 7)
30#define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8)
31#define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9)
32#define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10)
33#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)
34
35#define OMAP_DMA_CCR_EN (1 << 7)
36#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
37#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
38#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
39#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)
40
41#define OMAP_DMA_DATA_TYPE_S8 0x00
42#define OMAP_DMA_DATA_TYPE_S16 0x01
43#define OMAP_DMA_DATA_TYPE_S32 0x02
44
45#define OMAP_DMA_SYNC_ELEMENT 0x00
46#define OMAP_DMA_SYNC_FRAME 0x01
47#define OMAP_DMA_SYNC_BLOCK 0x02
48#define OMAP_DMA_SYNC_PACKET 0x03
49
50#define OMAP_DMA_DST_SYNC_PREFETCH 0x02
51#define OMAP_DMA_SRC_SYNC 0x01
52#define OMAP_DMA_DST_SYNC 0x00
53
54#define OMAP_DMA_PORT_EMIFF 0x00
55#define OMAP_DMA_PORT_EMIFS 0x01
56#define OMAP_DMA_PORT_OCP_T1 0x02
57#define OMAP_DMA_PORT_TIPB 0x03
58#define OMAP_DMA_PORT_OCP_T2 0x04
59#define OMAP_DMA_PORT_MPUI 0x05
60
61#define OMAP_DMA_AMODE_CONSTANT 0x00
62#define OMAP_DMA_AMODE_POST_INC 0x01
63#define OMAP_DMA_AMODE_SINGLE_IDX 0x02
64#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03
65
66#define DMA_DEFAULT_FIFO_DEPTH 0x10
67#define DMA_DEFAULT_ARB_RATE 0x01
68/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
69#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
70#define DMA_THREAD_RESERVE_ONET (0x01 << 12)
71#define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
72#define DMA_THREAD_RESERVE_THREET (0x03 << 12)
73#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
74#define DMA_THREAD_FIFO_75 (0x01 << 14)
75#define DMA_THREAD_FIFO_25 (0x02 << 14)
76#define DMA_THREAD_FIFO_50 (0x03 << 14)
77
78/* DMA4_OCP_SYSCONFIG bits */
79#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
80#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
81#define DMA_SYSCONFIG_EMUFREE (1 << 5)
82#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
83#define DMA_SYSCONFIG_SOFTRESET (1 << 2)
84#define DMA_SYSCONFIG_AUTOIDLE (1 << 0)
85
86#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
87#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)
88
89#define DMA_IDLEMODE_SMARTIDLE 0x2
90#define DMA_IDLEMODE_NO_IDLE 0x1
91#define DMA_IDLEMODE_FORCE_IDLE 0x0
92
93/* Chaining modes*/
94#ifndef CONFIG_ARCH_OMAP1
95#define OMAP_DMA_STATIC_CHAIN 0x1
96#define OMAP_DMA_DYNAMIC_CHAIN 0x2
97#define OMAP_DMA_CHAIN_ACTIVE 0x1
98#define OMAP_DMA_CHAIN_INACTIVE 0x0
Russell King7bedaa52012-04-13 12:10:24 +010099#endif
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800100
101#define DMA_CH_PRIO_HIGH 0x1
102#define DMA_CH_PRIO_LOW 0x0 /* Def */
103
104/* Errata handling */
105#define IS_DMA_ERRATA(id) (errata & (id))
106#define SET_DMA_ERRATA(id) (errata |= (id))
107
108#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0)
109#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1)
110#define DMA_ERRATA_i378 BIT(0x2)
111#define DMA_ERRATA_i541 BIT(0x3)
112#define DMA_ERRATA_i88 BIT(0x4)
113#define DMA_ERRATA_3_3 BIT(0x5)
114#define DMA_ROMCODE_BUG BIT(0x6)
115
116/* Attributes for OMAP DMA Contrller */
117#define DMA_LINKED_LCH BIT(0x0)
118#define GLOBAL_PRIORITY BIT(0x1)
119#define RESERVE_CHANNEL BIT(0x2)
120#define IS_CSSA_32 BIT(0x3)
121#define IS_CDSA_32 BIT(0x4)
122#define IS_RW_PRIORITY BIT(0x5)
123#define ENABLE_1510_MODE BIT(0x6)
124#define SRC_PORT BIT(0x7)
125#define DST_PORT BIT(0x8)
126#define SRC_INDEX BIT(0x9)
127#define DST_INDEX BIT(0xa)
128#define IS_BURST_ONLY4 BIT(0xb)
129#define CLEAR_CSR_ON_READ BIT(0xc)
130#define IS_WORD_16 BIT(0xd)
131#define ENABLE_16XX_MODE BIT(0xe)
132#define HS_CHANNELS_RESERVED BIT(0xf)
133
134/* Defines for DMA Capabilities */
135#define DMA_HAS_TRANSPARENT_CAPS (0x1 << 18)
136#define DMA_HAS_CONSTANT_FILL_CAPS (0x1 << 19)
137#define DMA_HAS_DESCRIPTOR_CAPS (0x3 << 20)
138
139enum omap_reg_offsets {
140
141GCR, GSCR, GRST1, HW_ID,
142PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID,
143PCHD_ID, CAPS_0, CAPS_1, CAPS_2,
144CAPS_3, CAPS_4, PCH2_SR, PCH0_SR,
145PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0,
146IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0,
147IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS,
148OCP_SYSCONFIG,
149
150/* omap1+ specific */
151CPC, CCR2, LCH_CTRL,
152
153/* Common registers for all omap's */
154CSDP, CCR, CICR, CSR,
155CEN, CFN, CSFI, CSEI,
156CSAC, CDAC, CDEI,
157CDFI, CLNK_CTRL,
158
159/* Channel specific registers */
160CSSA, CDSA, COLOR,
161CCEN, CCFN,
162
163/* omap3630 and omap4 specific */
164CDP, CNDP, CCDN,
165
166};
167
168enum omap_dma_burst_mode {
169 OMAP_DMA_DATA_BURST_DIS = 0,
170 OMAP_DMA_DATA_BURST_4,
171 OMAP_DMA_DATA_BURST_8,
172 OMAP_DMA_DATA_BURST_16,
173};
174
175enum end_type {
176 OMAP_DMA_LITTLE_ENDIAN = 0,
177 OMAP_DMA_BIG_ENDIAN
178};
179
180enum omap_dma_color_mode {
181 OMAP_DMA_COLOR_DIS = 0,
182 OMAP_DMA_CONSTANT_FILL,
183 OMAP_DMA_TRANSPARENT_COPY
184};
185
186enum omap_dma_write_mode {
187 OMAP_DMA_WRITE_NON_POSTED = 0,
188 OMAP_DMA_WRITE_POSTED,
189 OMAP_DMA_WRITE_LAST_NON_POSTED
190};
191
192enum omap_dma_channel_mode {
193 OMAP_DMA_LCH_2D = 0,
194 OMAP_DMA_LCH_G,
195 OMAP_DMA_LCH_P,
196 OMAP_DMA_LCH_PD
197};
198
199struct omap_dma_channel_params {
200 int data_type; /* data type 8,16,32 */
201 int elem_count; /* number of elements in a frame */
202 int frame_count; /* number of frames in a element */
203
204 int src_port; /* Only on OMAP1 REVISIT: Is this needed? */
205 int src_amode; /* constant, post increment, indexed,
206 double indexed */
207 unsigned long src_start; /* source address : physical */
208 int src_ei; /* source element index */
209 int src_fi; /* source frame index */
210
211 int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */
212 int dst_amode; /* constant, post increment, indexed,
213 double indexed */
214 unsigned long dst_start; /* source address : physical */
215 int dst_ei; /* source element index */
216 int dst_fi; /* source frame index */
217
218 int trigger; /* trigger attached if the channel is
219 synchronized */
220 int sync_mode; /* sycn on element, frame , block or packet */
221 int src_or_dst_synch; /* source synch(1) or destination synch(0) */
222
223 int ie; /* interrupt enabled */
224
225 unsigned char read_prio;/* read priority */
226 unsigned char write_prio;/* write priority */
227
228#ifndef CONFIG_ARCH_OMAP1
229 enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
230#endif
231};
232
233struct omap_dma_lch {
234 int next_lch;
235 int dev_id;
236 u16 saved_csr;
237 u16 enabled_irqs;
238 const char *dev_name;
239 void (*callback)(int lch, u16 ch_status, void *data);
240 void *data;
241 long flags;
242 /* required for Dynamic chaining */
243 int prev_linked_ch;
244 int next_linked_ch;
245 int state;
246 int chain_id;
247 int status;
248};
249
250struct omap_dma_dev_attr {
251 u32 dev_caps;
252 u16 lch_count;
253 u16 chan_count;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800254};
255
Russell King64a2dc32013-11-08 18:04:06 +0000256enum {
257 OMAP_DMA_REG_NONE,
258 OMAP_DMA_REG_16BIT,
259 OMAP_DMA_REG_2X16BIT,
260 OMAP_DMA_REG_32BIT,
261};
262
263struct omap_dma_reg {
264 u16 offset;
265 u8 stride;
266 u8 type;
267};
268
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800269/* System DMA platform data structure */
270struct omap_system_dma_plat_info {
Russell King596c4712013-12-10 11:08:01 +0000271 const struct omap_dma_reg *reg_map;
272 unsigned channel_stride;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800273 struct omap_dma_dev_attr *dma_attr;
274 u32 errata;
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800275 void (*show_dma_caps)(void);
276 void (*clear_lch_regs)(int lch);
277 void (*clear_dma)(int lch);
278 void (*dma_write)(u32 val, int reg, int lch);
279 u32 (*dma_read)(int reg, int lch);
280};
281
282#ifdef CONFIG_ARCH_OMAP2PLUS
283#define dma_omap2plus() 1
284#else
285#define dma_omap2plus() 0
286#endif
287#define dma_omap1() (!dma_omap2plus())
Russell Kingb9e97822013-11-02 13:26:57 +0000288#define __dma_omap15xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_1510_MODE)
289#define __dma_omap16xx(d) (dma_omap1() && (d)->dev_caps & ENABLE_16XX_MODE)
290#define dma_omap15xx() __dma_omap15xx(d)
291#define dma_omap16xx() __dma_omap16xx(d)
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800292
Russell King1b416c42013-11-02 13:00:03 +0000293extern struct omap_system_dma_plat_info *omap_get_plat_info(void);
294
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800295extern void omap_set_dma_priority(int lch, int dst_port, int priority);
296extern int omap_request_dma(int dev_id, const char *dev_name,
297 void (*callback)(int lch, u16 ch_status, void *data),
298 void *data, int *dma_ch);
299extern void omap_enable_dma_irq(int ch, u16 irq_bits);
300extern void omap_disable_dma_irq(int ch, u16 irq_bits);
301extern void omap_free_dma(int ch);
302extern void omap_start_dma(int lch);
303extern void omap_stop_dma(int lch);
304extern void omap_set_dma_transfer_params(int lch, int data_type,
305 int elem_count, int frame_count,
306 int sync_mode,
307 int dma_trigger, int src_or_dst_synch);
308extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode,
309 u32 color);
310extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
311extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
312
313extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
314 unsigned long src_start,
315 int src_ei, int src_fi);
316extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
317extern void omap_set_dma_src_data_pack(int lch, int enable);
318extern void omap_set_dma_src_burst_mode(int lch,
319 enum omap_dma_burst_mode burst_mode);
320
321extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
322 unsigned long dest_start,
323 int dst_ei, int dst_fi);
324extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
325extern void omap_set_dma_dest_data_pack(int lch, int enable);
326extern void omap_set_dma_dest_burst_mode(int lch,
327 enum omap_dma_burst_mode burst_mode);
328
329extern void omap_set_dma_params(int lch,
330 struct omap_dma_channel_params *params);
331
332extern void omap_dma_link_lch(int lch_head, int lch_queue);
333extern void omap_dma_unlink_lch(int lch_head, int lch_queue);
334
335extern int omap_set_dma_callback(int lch,
336 void (*callback)(int lch, u16 ch_status, void *data),
337 void *data);
338extern dma_addr_t omap_get_dma_src_pos(int lch);
339extern dma_addr_t omap_get_dma_dst_pos(int lch);
340extern void omap_clear_dma(int lch);
341extern int omap_get_dma_active_status(int lch);
342extern int omap_dma_running(void);
343extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
344 int tparams);
345extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
346 unsigned char write_prio);
347extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype);
348extern void omap_set_dma_src_endian_type(int lch, enum end_type etype);
349extern int omap_get_dma_index(int lch, int *ei, int *fi);
350
351void omap_dma_global_context_save(void);
352void omap_dma_global_context_restore(void);
353
354extern void omap_dma_disable_irq(int lch);
355
356/* Chaining APIs */
357#ifndef CONFIG_ARCH_OMAP1
358extern int omap_request_dma_chain(int dev_id, const char *dev_name,
359 void (*callback) (int lch, u16 ch_status,
360 void *data),
361 int *chain_id, int no_of_chans,
362 int chain_mode,
363 struct omap_dma_channel_params params);
364extern int omap_free_dma_chain(int chain_id);
365extern int omap_dma_chain_a_transfer(int chain_id, int src_start,
366 int dest_start, int elem_count,
367 int frame_count, void *callbk_data);
368extern int omap_start_dma_chain_transfers(int chain_id);
369extern int omap_stop_dma_chain_transfers(int chain_id);
370extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi);
371extern int omap_get_dma_chain_dst_pos(int chain_id);
372extern int omap_get_dma_chain_src_pos(int chain_id);
373
374extern int omap_modify_dma_chain_params(int chain_id,
375 struct omap_dma_channel_params params);
376extern int omap_dma_chain_status(int chain_id);
377#endif
378
Arnd Bergmann81c44c22014-04-24 13:28:20 +0100379#if defined(CONFIG_ARCH_OMAP1) && IS_ENABLED(CONFIG_FB_OMAP)
Tony Lindgren45c3eb72012-11-30 08:41:50 -0800380#include <mach/lcd_dma.h>
381#else
382static inline int omap_lcd_dma_running(void)
383{
384 return 0;
385}
386#endif
387
388#endif /* __LINUX_OMAP_DMA_H */