1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
|
/****************************************************************************
* config/sama5d4-ek/src/sam_hsmci.c
*
* Copyright (C) 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/* The SAMA5D4-EK provides a two SD memory card slots: (1) a full size SD
* card slot (J10), and (2) a microSD memory card slot (J11).
*
* The full size SD card slot connects via HSMCI0. The card detect discrete
* is available on PE5 (pulled high). The write protect discrete is tied to
* ground and is not available to software. The slot supports 8-bit wide
* transfer mode, but the NuttX driver currently uses only the 4-bit wide
* transfer mode
*
* ------------------------------ ------------------- -------------------------
* SAMA5D4 PIO SIGNAL USAGE
* ------------------------------ ------------------- -------------------------
* PC4/SPI0_NPCS1/MCI0_CK/PCK1 PC4 MCI0_CK, ISI_MCK, EXP
* PC5/D0/MCI0_CDA PC5 MCI0_CDA, NAND_IO0
* PC6/D1/MCI0_DA0 PC6 MCI0_DA0, NAND_IO1
* PC7/D2/MCI0_DA1 PC7 MCI0_DA1, NAND_IO2
* PC8/D3/MCI0_DA2 PC8 MCI0_DA2, NAND_IO3
* PC9/D4/MCI0_DA3 PC9 MCI0_DA3, NAND_IO4
* PC10/D5/MCI0_DA4 PC10 MCI0_DA4, NAND_IO5
* PC11/D6/MCI0_DA5 PC11 MCI0_DA5, NAND_IO6
* PC12/D7/MCI0_DA6 PC12 MCI0_DA6, NAND_IO7
* PC13/NRD/NANDOE/MCI0_DA7 PC13 MCI0_DA7, NAND_RE
* PE5/A5/CTS3 MCI0_CD_PE5 MCI0_CD
* ------------------------------ ------------------- -------------------------
*
* The microSD connects vi HSMCI1. The card detect discrete is available on
* PE6 (pulled high):
*
* ------------------------------ ------------------- -------------------------
* SAMA5D4 PIO SIGNAL USAGE
* ------------------------------ ------------------- -------------------------
* PE14/A14/TCLK1/PWMH3 MCI1_CD_PE14 MCI1_CD ???
* PE15/A15/SCK3/TIOA0 MCI1_PWR_PE15 MCI1_PWR
* PE18/A18/TIOA5/MCI1_CK PE18 MCI1_CK, EXP
* PE19/A19/TIOB5/MCI1_CDA PE19 MCI1_CDA, EXP
* PE20/A20/TCLK5/MCI1_DA0 PE20 MCI1_DA0, EXP
* PE21/A23/TIOA4/MCI1_DA1 PE21 MCI1_DA1, EXP
* PE22/A24/TIOB4/MCI1_DA2 PE22 MCI1_DA2, EXP
* PE23/A25/TCLK4/MCI1_DA3 PE23 MCI1_DA3, EXP
* PE6/A6/TIOA3 MCI1_CD_PE6 MCI1_CD
* ------------------------------ ------------------- -------------------------
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/sdio.h>
#include <nuttx/mmcsd.h>
#include "sam_pio.h"
#include "sam_hsmci.h"
#include "sama5d4-ek.h"
#ifdef HAVE_HSMCI
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/* This structure holds static information unique to one HSMCI peripheral */
struct sam_hsmci_state_s
{
struct sdio_dev_s *hsmci; /* R/W device handle */
pio_pinset_t cdcfg; /* Card detect PIO pin configuration */
pio_pinset_t pwrcfg; /* Power PIO pin configuration */
uint8_t irq; /* Interrupt number (same as pid) */
uint8_t slotno; /* Slot number */
bool cd; /* TRUE: card is inserted */
xcpt_t handler; /* Interrupt handler */
};
/****************************************************************************
* Private Data
****************************************************************************/
/* HSCMI device state */
#ifdef CONFIG_SAMA5_HSMCI0
static int sam_hsmci0_cardetect(int irq, void *regs);
static struct sam_hsmci_state_s g_hsmci0 =
{
.cdcfg = PIO_MCI0_CD,
.irq = IRQ_MCI0_CD,
.slotno = 0,
.handler = sam_hsmci0_cardetect,
};
#endif
#ifdef CONFIG_SAMA5_HSMCI1
static int sam_hsmci1_cardetect(int irq, void *regs);
static struct sam_hsmci_state_s g_hsmci1 =
{
.cdcfg = PIO_MCI1_CD,
.pwrcfg = IRQ_MCI1_PWR,
.irq = IRQ_MCI1_CD,
.slotno = 1,
.handler = sam_hsmci1_cardetect,
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: sam_cardinserted_internal
*
* Description:
* Check if a card is inserted into the selected HSMCI slot
*
****************************************************************************/
bool sam_cardinserted_internal(struct sam_hsmci_state_s *state)
{
bool inserted;
/* Get the state of the PIO pin */
inserted = sam_pioread(state->cdcfg);
fllvdbg("Slot %d inserted: %s\n", state->slotno, inserted ? "NO" : "YES");
return !inserted;
}
/****************************************************************************
* Name: sam_hsmci_cardetect, sam_hsmci0_cardetect, and sam_hsmci1_cardetect
*
* Description:
* Card detect interrupt handlers
*
****************************************************************************/
static int sam_hsmci_cardetect(struct sam_hsmci_state_s *state)
{
/* Get the current card insertion state */
bool cd = sam_cardinserted_internal(state);
/* Has the card detect state changed? */
if (cd != state->cd)
{
/* Yes... remember that new state and inform the HSMCI driver */
state->cd = cd;
/* Report the new state to the SDIO driver */
sdio_mediachange(state->hsmci, cd);
}
return OK;
}
#ifdef CONFIG_SAMA5_HSMCI0
static int sam_hsmci0_cardetect(int irq, void *regs)
{
int ret;
/* Handle the card detect interrupt. The interrupt level logic will
* kick of the driver-level operations to initialize the MMC/SD block
* device.
*/
ret = sam_hsmci_cardetect(&g_hsmci0);
#ifdef CONFIG_SAMA5D4EK_HSMCI0_AUTOMOUNT
/* Let the automounter know about the insertion event */
sam_automount_event(HSMCI0_SLOTNO, sam_cardinserted(HSMCI0_SLOTNO));
#endif
return ret;
}
#endif
#ifdef CONFIG_SAMA5_HSMCI1
static int sam_hsmci1_cardetect(int irq, void *regs)
{
int ret;
/* Handle the card detect interrupt. The interrupt level logic will
* kick of the driver-level operations to initialize the MMC/SD block
* device.
*/
ret = sam_hsmci_cardetect(&g_hsmci1);
#ifdef CONFIG_SAMA5D4EK_HSMCI1_AUTOMOUNT
/* Let the automounter know about the insertion event */
sam_automount_event(HSMCI1_SLOTNO, sam_cardinserted(HSMCI1_SLOTNO));
#endif
return ret;
}
#endif
/****************************************************************************
* Name: sam_hsmci_state
*
* Description:
* Initialize HSMCI PIOs.
*
****************************************************************************/
static struct sam_hsmci_state_s *sam_hsmci_state(int slotno)
{
struct sam_hsmci_state_s *state = NULL;
#ifdef CONFIG_SAMA5_HSMCI0
#ifdef CONFIG_SAMA5_HSMCI1
if (slotno == 0)
#endif
{
state = &g_hsmci0;
}
#ifdef CONFIG_SAMA5_HSMCI1
else
#endif
#endif
#ifdef CONFIG_SAMA5_HSMCI1
{
state = &g_hsmci1;
}
#endif
return state;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam_hsmci_initialize
*
* Description:
* Perform architecture specific initialization
*
****************************************************************************/
int sam_hsmci_initialize(int slotno, int minor)
{
struct sam_hsmci_state_s *state;
int ret;
/* Get the static HSMI description */
state = sam_hsmci_state(slotno);
if (!state)
{
fdbg("ERROR: No state for slotno %d\n", slotno);
return -EINVAL;
}
/* Initialize card-detect, write-protect, and power enable PIOs */
sam_configpio(state->cdcfg);
sam_dumppio(state->cdcfg, "HSMCI Card Detect");
if (state->pwrcfg != 0)
{
sam_configpio(state->pwrcfg);
sam_dumppio(state->pwrcfg, "HSMCI Power");
}
/* Mount the SDIO-based MMC/SD block driver */
/* First, get an instance of the SDIO interface */
state->hsmci = sdio_initialize(slotno);
if (!state->hsmci)
{
fdbg("ERROR: Failed to initialize SDIO slot %d\n", slotno);
return -ENODEV;
}
/* Now bind the SDIO interface to the MMC/SD driver */
ret = mmcsd_slotinitialize(minor, state->hsmci);
if (ret != OK)
{
fdbg("ERROR: Failed to bind SDIO to the MMC/SD driver: %d\n", ret);
return ret;
}
/* Configure card detect interrupts */
sam_pioirq(state->cdcfg);
(void)irq_attach(state->irq, state->handler);
/* Then inform the HSMCI driver if there is or is not a card in the slot. */
state->cd = sam_cardinserted_internal(state);
sdio_mediachange(state->hsmci, state->cd);
/* Enable card detect interrupts */
sam_pioirqenable(state->irq);
return OK;
}
/****************************************************************************
* Name: sam_cardinserted
*
* Description:
* Check if a card is inserted into the selected HSMCI slot
*
****************************************************************************/
bool sam_cardinserted(int slotno)
{
struct sam_hsmci_state_s *state;
/* Get the HSMI description */
state = sam_hsmci_state(slotno);
if (!state)
{
fdbg("ERROR: No state for slotno %d\n", slotno);
return false;
}
/* Return the state of the PIO pin */
return sam_cardinserted_internal(state);
}
/****************************************************************************
* Name: sam_writeprotected
*
* Description:
* Check if a card is inserted into the selected HSMCI slot
*
****************************************************************************/
bool sam_writeprotected(int slotno)
{
/* There are no write protect pins */
return false;
}
#endif /* HAVE_HSMCI */
|