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Commit | Line | Data |
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1d0933ea MP |
1 | /* |
2 | * TI QSPI driver | |
3 | * | |
4 | * Copyright (C) 2013, Texas Instruments, Incorporated | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
10 | #include <asm/io.h> | |
11 | #include <asm/arch/omap.h> | |
12 | #include <malloc.h> | |
13 | #include <spi.h> | |
106f8139 | 14 | #include <dm.h> |
570533b8 SP |
15 | #include <asm/gpio.h> |
16 | #include <asm/omap_gpio.h> | |
8ddd9c48 V |
17 | #include <asm/omap_common.h> |
18 | #include <asm/ti-common/ti-edma3.h> | |
1d0933ea | 19 | |
106f8139 M |
20 | DECLARE_GLOBAL_DATA_PTR; |
21 | ||
1d0933ea MP |
22 | /* ti qpsi register bit masks */ |
23 | #define QSPI_TIMEOUT 2000000 | |
24 | #define QSPI_FCLK 192000000 | |
25 | /* clock control */ | |
847720c4 | 26 | #define QSPI_CLK_EN BIT(31) |
1d0933ea MP |
27 | #define QSPI_CLK_DIV_MAX 0xffff |
28 | /* command */ | |
29 | #define QSPI_EN_CS(n) (n << 28) | |
30 | #define QSPI_WLEN(n) ((n-1) << 19) | |
847720c4 JT |
31 | #define QSPI_3_PIN BIT(18) |
32 | #define QSPI_RD_SNGL BIT(16) | |
1d0933ea MP |
33 | #define QSPI_WR_SNGL (2 << 16) |
34 | #define QSPI_INVAL (4 << 16) | |
35 | #define QSPI_RD_QUAD (7 << 16) | |
36 | /* device control */ | |
37 | #define QSPI_DD(m, n) (m << (3 + n*8)) | |
38 | #define QSPI_CKPHA(n) (1 << (2 + n*8)) | |
39 | #define QSPI_CSPOL(n) (1 << (1 + n*8)) | |
40 | #define QSPI_CKPOL(n) (1 << (n*8)) | |
41 | /* status */ | |
847720c4 JT |
42 | #define QSPI_WC BIT(1) |
43 | #define QSPI_BUSY BIT(0) | |
1d0933ea MP |
44 | #define QSPI_WC_BUSY (QSPI_WC | QSPI_BUSY) |
45 | #define QSPI_XFER_DONE QSPI_WC | |
46 | #define MM_SWITCH 0x01 | |
ec712f49 | 47 | #define MEM_CS(cs) ((cs + 1) << 8) |
8dfd6e21 | 48 | #define MEM_CS_UNSELECT 0xfffff8ff |
570533b8 SP |
49 | #define MMAP_START_ADDR_DRA 0x5c000000 |
50 | #define MMAP_START_ADDR_AM43x 0x30000000 | |
1d0933ea MP |
51 | #define CORE_CTRL_IO 0x4a002558 |
52 | ||
53 | #define QSPI_CMD_READ (0x3 << 0) | |
106f8139 | 54 | #define QSPI_CMD_READ_DUAL (0x6b << 0) |
74d49bfd | 55 | #define QSPI_CMD_READ_QUAD (0x6c << 0) |
1d0933ea | 56 | #define QSPI_CMD_READ_FAST (0x0b << 0) |
74d49bfd | 57 | #define QSPI_SETUP0_NUM_A_BYTES (0x3 << 8) |
1d0933ea MP |
58 | #define QSPI_SETUP0_NUM_D_BYTES_NO_BITS (0x0 << 10) |
59 | #define QSPI_SETUP0_NUM_D_BYTES_8_BITS (0x1 << 10) | |
60 | #define QSPI_SETUP0_READ_NORMAL (0x0 << 12) | |
106f8139 | 61 | #define QSPI_SETUP0_READ_DUAL (0x1 << 12) |
1d0933ea | 62 | #define QSPI_SETUP0_READ_QUAD (0x3 << 12) |
74d49bfd | 63 | #define QSPI_CMD_WRITE (0x12 << 16) |
1d0933ea MP |
64 | #define QSPI_NUM_DUMMY_BITS (0x0 << 24) |
65 | ||
66 | /* ti qspi register set */ | |
67 | struct ti_qspi_regs { | |
68 | u32 pid; | |
69 | u32 pad0[3]; | |
70 | u32 sysconfig; | |
71 | u32 pad1[3]; | |
72 | u32 int_stat_raw; | |
73 | u32 int_stat_en; | |
74 | u32 int_en_set; | |
75 | u32 int_en_ctlr; | |
76 | u32 intc_eoi; | |
77 | u32 pad2[3]; | |
78 | u32 clk_ctrl; | |
79 | u32 dc; | |
80 | u32 cmd; | |
81 | u32 status; | |
82 | u32 data; | |
83 | u32 setup0; | |
84 | u32 setup1; | |
85 | u32 setup2; | |
86 | u32 setup3; | |
87 | u32 memswitch; | |
88 | u32 data1; | |
89 | u32 data2; | |
90 | u32 data3; | |
91 | }; | |
92 | ||
9c42558a M |
93 | /* ti qspi priv */ |
94 | struct ti_qspi_priv { | |
106f8139 | 95 | #ifndef CONFIG_DM_SPI |
1d0933ea | 96 | struct spi_slave slave; |
106f8139 M |
97 | #else |
98 | void *memory_map; | |
99 | uint max_hz; | |
100 | u32 num_cs; | |
101 | #endif | |
1d0933ea | 102 | struct ti_qspi_regs *base; |
22309144 | 103 | void *ctrl_mod_mmap; |
1d0933ea MP |
104 | unsigned int mode; |
105 | u32 cmd; | |
106 | u32 dc; | |
107 | }; | |
108 | ||
22309144 | 109 | static void ti_spi_set_speed(struct ti_qspi_priv *priv, uint hz) |
1d0933ea | 110 | { |
1d0933ea MP |
111 | uint clk_div; |
112 | ||
113 | debug("ti_spi_set_speed: hz: %d, clock divider %d\n", hz, clk_div); | |
114 | ||
115 | if (!hz) | |
116 | clk_div = 0; | |
117 | else | |
118 | clk_div = (QSPI_FCLK / hz) - 1; | |
119 | ||
120 | /* disable SCLK */ | |
9c42558a M |
121 | writel(readl(&priv->base->clk_ctrl) & ~QSPI_CLK_EN, |
122 | &priv->base->clk_ctrl); | |
1d0933ea MP |
123 | |
124 | /* assign clk_div values */ | |
125 | if (clk_div < 0) | |
126 | clk_div = 0; | |
127 | else if (clk_div > QSPI_CLK_DIV_MAX) | |
128 | clk_div = QSPI_CLK_DIV_MAX; | |
129 | ||
130 | /* enable SCLK */ | |
9c42558a | 131 | writel(QSPI_CLK_EN | clk_div, &priv->base->clk_ctrl); |
1d0933ea MP |
132 | } |
133 | ||
22309144 | 134 | static void ti_qspi_cs_deactivate(struct ti_qspi_priv *priv) |
1d0933ea | 135 | { |
9c42558a | 136 | writel(priv->cmd | QSPI_INVAL, &priv->base->cmd); |
857db48e | 137 | /* dummy readl to ensure bus sync */ |
22309144 | 138 | readl(&priv->base->cmd); |
1d0933ea MP |
139 | } |
140 | ||
22309144 | 141 | static int __ti_qspi_set_mode(struct ti_qspi_priv *priv, unsigned int mode) |
1d0933ea | 142 | { |
22309144 M |
143 | priv->dc = 0; |
144 | if (mode & SPI_CPHA) | |
145 | priv->dc |= QSPI_CKPHA(0); | |
146 | if (mode & SPI_CPOL) | |
147 | priv->dc |= QSPI_CKPOL(0); | |
148 | if (mode & SPI_CS_HIGH) | |
149 | priv->dc |= QSPI_CSPOL(0); | |
1d0933ea | 150 | |
22309144 | 151 | return 0; |
1d0933ea MP |
152 | } |
153 | ||
22309144 | 154 | static int __ti_qspi_claim_bus(struct ti_qspi_priv *priv, int cs) |
1d0933ea | 155 | { |
9c42558a M |
156 | writel(priv->dc, &priv->base->dc); |
157 | writel(0, &priv->base->cmd); | |
158 | writel(0, &priv->base->data); | |
1d0933ea | 159 | |
22309144 M |
160 | priv->dc <<= cs * 8; |
161 | writel(priv->dc, &priv->base->dc); | |
162 | ||
1d0933ea MP |
163 | return 0; |
164 | } | |
165 | ||
22309144 | 166 | static void __ti_qspi_release_bus(struct ti_qspi_priv *priv) |
1d0933ea | 167 | { |
9c42558a M |
168 | writel(0, &priv->base->dc); |
169 | writel(0, &priv->base->cmd); | |
170 | writel(0, &priv->base->data); | |
1d0933ea MP |
171 | } |
172 | ||
22309144 M |
173 | static void ti_qspi_ctrl_mode_mmap(void *ctrl_mod_mmap, int cs, bool enable) |
174 | { | |
175 | u32 val; | |
176 | ||
177 | val = readl(ctrl_mod_mmap); | |
178 | if (enable) | |
179 | val |= MEM_CS(cs); | |
180 | else | |
181 | val &= MEM_CS_UNSELECT; | |
182 | writel(val, ctrl_mod_mmap); | |
183 | } | |
184 | ||
185 | static int __ti_qspi_xfer(struct ti_qspi_priv *priv, unsigned int bitlen, | |
186 | const void *dout, void *din, unsigned long flags, | |
187 | u32 cs) | |
1d0933ea | 188 | { |
1d0933ea MP |
189 | uint words = bitlen >> 3; /* fixed 8-bit word length */ |
190 | const uchar *txp = dout; | |
191 | uchar *rxp = din; | |
192 | uint status; | |
570533b8 SP |
193 | int timeout; |
194 | ||
1d0933ea MP |
195 | /* Setup mmap flags */ |
196 | if (flags & SPI_XFER_MMAP) { | |
9c42558a | 197 | writel(MM_SWITCH, &priv->base->memswitch); |
22309144 M |
198 | if (priv->ctrl_mod_mmap) |
199 | ti_qspi_ctrl_mode_mmap(priv->ctrl_mod_mmap, cs, true); | |
1d0933ea MP |
200 | return 0; |
201 | } else if (flags & SPI_XFER_MMAP_END) { | |
9c42558a | 202 | writel(~MM_SWITCH, &priv->base->memswitch); |
22309144 M |
203 | if (priv->ctrl_mod_mmap) |
204 | ti_qspi_ctrl_mode_mmap(priv->ctrl_mod_mmap, cs, false); | |
1d0933ea MP |
205 | return 0; |
206 | } | |
207 | ||
208 | if (bitlen == 0) | |
209 | return -1; | |
210 | ||
211 | if (bitlen % 8) { | |
212 | debug("spi_xfer: Non byte aligned SPI transfer\n"); | |
213 | return -1; | |
214 | } | |
215 | ||
216 | /* Setup command reg */ | |
9c42558a M |
217 | priv->cmd = 0; |
218 | priv->cmd |= QSPI_WLEN(8); | |
22309144 | 219 | priv->cmd |= QSPI_EN_CS(cs); |
9c42558a M |
220 | if (priv->mode & SPI_3WIRE) |
221 | priv->cmd |= QSPI_3_PIN; | |
222 | priv->cmd |= 0xfff; | |
1d0933ea | 223 | |
bb7cd0dd SP |
224 | /* FIXME: This delay is required for successfull |
225 | * completion of read/write/erase. Once its root | |
226 | * caused, it will be remove from the driver. | |
227 | */ | |
228 | #ifdef CONFIG_AM43XX | |
229 | udelay(100); | |
230 | #endif | |
1d0933ea MP |
231 | while (words--) { |
232 | if (txp) { | |
233 | debug("tx cmd %08x dc %08x data %02x\n", | |
9c42558a M |
234 | priv->cmd | QSPI_WR_SNGL, priv->dc, *txp); |
235 | writel(*txp++, &priv->base->data); | |
236 | writel(priv->cmd | QSPI_WR_SNGL, | |
237 | &priv->base->cmd); | |
238 | status = readl(&priv->base->status); | |
1d0933ea MP |
239 | timeout = QSPI_TIMEOUT; |
240 | while ((status & QSPI_WC_BUSY) != QSPI_XFER_DONE) { | |
241 | if (--timeout < 0) { | |
242 | printf("spi_xfer: TX timeout!\n"); | |
243 | return -1; | |
244 | } | |
9c42558a | 245 | status = readl(&priv->base->status); |
1d0933ea MP |
246 | } |
247 | debug("tx done, status %08x\n", status); | |
248 | } | |
249 | if (rxp) { | |
1d0933ea | 250 | debug("rx cmd %08x dc %08x\n", |
69eeefaa | 251 | ((u32)(priv->cmd | QSPI_RD_SNGL)), priv->dc); |
b545a98f PS |
252 | #ifdef CONFIG_DRA7XX |
253 | udelay(500); | |
254 | #endif | |
69eeefaa | 255 | writel(priv->cmd | QSPI_RD_SNGL, &priv->base->cmd); |
9c42558a | 256 | status = readl(&priv->base->status); |
1d0933ea MP |
257 | timeout = QSPI_TIMEOUT; |
258 | while ((status & QSPI_WC_BUSY) != QSPI_XFER_DONE) { | |
259 | if (--timeout < 0) { | |
260 | printf("spi_xfer: RX timeout!\n"); | |
261 | return -1; | |
262 | } | |
9c42558a | 263 | status = readl(&priv->base->status); |
1d0933ea | 264 | } |
9c42558a | 265 | *rxp++ = readl(&priv->base->data); |
1d0933ea MP |
266 | debug("rx done, status %08x, read %02x\n", |
267 | status, *(rxp-1)); | |
268 | } | |
269 | } | |
270 | ||
271 | /* Terminate frame */ | |
272 | if (flags & SPI_XFER_END) | |
22309144 | 273 | ti_qspi_cs_deactivate(priv); |
1d0933ea MP |
274 | |
275 | return 0; | |
276 | } | |
8ddd9c48 V |
277 | |
278 | /* TODO: control from sf layer to here through dm-spi */ | |
518b0afc | 279 | #if defined(CONFIG_TI_EDMA3) && !defined(CONFIG_DMA) |
8ddd9c48 V |
280 | void spi_flash_copy_mmap(void *data, void *offset, size_t len) |
281 | { | |
282 | unsigned int addr = (unsigned int) (data); | |
283 | unsigned int edma_slot_num = 1; | |
284 | ||
285 | /* Invalidate the area, so no writeback into the RAM races with DMA */ | |
286 | invalidate_dcache_range(addr, addr + roundup(len, ARCH_DMA_MINALIGN)); | |
287 | ||
288 | /* enable edma3 clocks */ | |
289 | enable_edma3_clocks(); | |
290 | ||
291 | /* Call edma3 api to do actual DMA transfer */ | |
292 | edma3_transfer(EDMA3_BASE, edma_slot_num, data, offset, len); | |
293 | ||
294 | /* disable edma3 clocks */ | |
295 | disable_edma3_clocks(); | |
296 | ||
297 | *((unsigned int *)offset) += len; | |
298 | } | |
299 | #endif | |
22309144 | 300 | |
106f8139 M |
301 | #ifndef CONFIG_DM_SPI |
302 | ||
22309144 M |
303 | static inline struct ti_qspi_priv *to_ti_qspi_priv(struct spi_slave *slave) |
304 | { | |
305 | return container_of(slave, struct ti_qspi_priv, slave); | |
306 | } | |
307 | ||
308 | int spi_cs_is_valid(unsigned int bus, unsigned int cs) | |
309 | { | |
310 | return 1; | |
311 | } | |
312 | ||
313 | void spi_cs_activate(struct spi_slave *slave) | |
314 | { | |
315 | /* CS handled in xfer */ | |
316 | return; | |
317 | } | |
318 | ||
319 | void spi_cs_deactivate(struct spi_slave *slave) | |
320 | { | |
321 | struct ti_qspi_priv *priv = to_ti_qspi_priv(slave); | |
322 | ti_qspi_cs_deactivate(priv); | |
323 | } | |
324 | ||
325 | void spi_init(void) | |
326 | { | |
327 | /* nothing to do */ | |
328 | } | |
329 | ||
330 | static void ti_spi_setup_spi_register(struct ti_qspi_priv *priv) | |
331 | { | |
332 | u32 memval = 0; | |
333 | ||
334 | #ifdef CONFIG_QSPI_QUAD_SUPPORT | |
335 | struct spi_slave *slave = &priv->slave; | |
336 | memval |= (QSPI_CMD_READ_QUAD | QSPI_SETUP0_NUM_A_BYTES | | |
337 | QSPI_SETUP0_NUM_D_BYTES_8_BITS | | |
338 | QSPI_SETUP0_READ_QUAD | QSPI_CMD_WRITE | | |
339 | QSPI_NUM_DUMMY_BITS); | |
340 | slave->mode_rx = SPI_RX_QUAD; | |
341 | #else | |
342 | memval |= QSPI_CMD_READ | QSPI_SETUP0_NUM_A_BYTES | | |
343 | QSPI_SETUP0_NUM_D_BYTES_NO_BITS | | |
344 | QSPI_SETUP0_READ_NORMAL | QSPI_CMD_WRITE | | |
345 | QSPI_NUM_DUMMY_BITS; | |
346 | #endif | |
347 | ||
348 | writel(memval, &priv->base->setup0); | |
349 | } | |
350 | ||
351 | struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, | |
352 | unsigned int max_hz, unsigned int mode) | |
353 | { | |
354 | struct ti_qspi_priv *priv; | |
355 | ||
356 | #ifdef CONFIG_AM43XX | |
357 | gpio_request(CONFIG_QSPI_SEL_GPIO, "qspi_gpio"); | |
358 | gpio_direction_output(CONFIG_QSPI_SEL_GPIO, 1); | |
359 | #endif | |
360 | ||
361 | priv = spi_alloc_slave(struct ti_qspi_priv, bus, cs); | |
362 | if (!priv) { | |
363 | printf("SPI_error: Fail to allocate ti_qspi_priv\n"); | |
364 | return NULL; | |
365 | } | |
366 | ||
367 | priv->base = (struct ti_qspi_regs *)QSPI_BASE; | |
368 | priv->mode = mode; | |
369 | #if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX) | |
370 | priv->ctrl_mod_mmap = (void *)CORE_CTRL_IO; | |
371 | priv->slave.memory_map = (void *)MMAP_START_ADDR_DRA; | |
372 | #else | |
373 | priv->slave.memory_map = (void *)MMAP_START_ADDR_AM43x; | |
374 | #endif | |
375 | ||
376 | ti_spi_set_speed(priv, max_hz); | |
377 | ||
378 | #ifdef CONFIG_TI_SPI_MMAP | |
379 | ti_spi_setup_spi_register(priv); | |
380 | #endif | |
381 | ||
382 | return &priv->slave; | |
383 | } | |
384 | ||
385 | void spi_free_slave(struct spi_slave *slave) | |
386 | { | |
387 | struct ti_qspi_priv *priv = to_ti_qspi_priv(slave); | |
388 | free(priv); | |
389 | } | |
390 | ||
391 | int spi_claim_bus(struct spi_slave *slave) | |
392 | { | |
393 | struct ti_qspi_priv *priv = to_ti_qspi_priv(slave); | |
394 | ||
395 | debug("%s: bus:%i cs:%i\n", __func__, priv->slave.bus, priv->slave.cs); | |
396 | __ti_qspi_set_mode(priv, priv->mode); | |
397 | return __ti_qspi_claim_bus(priv, priv->slave.cs); | |
398 | } | |
399 | void spi_release_bus(struct spi_slave *slave) | |
400 | { | |
401 | struct ti_qspi_priv *priv = to_ti_qspi_priv(slave); | |
402 | ||
403 | debug("%s: bus:%i cs:%i\n", __func__, priv->slave.bus, priv->slave.cs); | |
404 | __ti_qspi_release_bus(priv); | |
405 | } | |
406 | ||
407 | int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, | |
408 | void *din, unsigned long flags) | |
409 | { | |
410 | struct ti_qspi_priv *priv = to_ti_qspi_priv(slave); | |
411 | ||
412 | debug("spi_xfer: bus:%i cs:%i bitlen:%i flags:%lx\n", | |
413 | priv->slave.bus, priv->slave.cs, bitlen, flags); | |
414 | return __ti_qspi_xfer(priv, bitlen, dout, din, flags, priv->slave.cs); | |
415 | } | |
106f8139 M |
416 | |
417 | #else /* CONFIG_DM_SPI */ | |
418 | ||
419 | static void __ti_qspi_setup_memorymap(struct ti_qspi_priv *priv, | |
420 | struct spi_slave *slave, | |
421 | bool enable) | |
422 | { | |
423 | u32 memval; | |
424 | u32 mode = slave->mode_rx & (SPI_RX_QUAD | SPI_RX_DUAL); | |
425 | ||
426 | if (!enable) { | |
427 | writel(0, &priv->base->setup0); | |
428 | return; | |
429 | } | |
430 | ||
431 | memval = QSPI_SETUP0_NUM_A_BYTES | QSPI_CMD_WRITE | QSPI_NUM_DUMMY_BITS; | |
432 | ||
433 | switch (mode) { | |
434 | case SPI_RX_QUAD: | |
435 | memval |= QSPI_CMD_READ_QUAD; | |
436 | memval |= QSPI_SETUP0_NUM_D_BYTES_8_BITS; | |
437 | memval |= QSPI_SETUP0_READ_QUAD; | |
438 | slave->mode_rx = SPI_RX_QUAD; | |
439 | break; | |
440 | case SPI_RX_DUAL: | |
441 | memval |= QSPI_CMD_READ_DUAL; | |
442 | memval |= QSPI_SETUP0_NUM_D_BYTES_8_BITS; | |
443 | memval |= QSPI_SETUP0_READ_DUAL; | |
444 | break; | |
445 | default: | |
446 | memval |= QSPI_CMD_READ; | |
447 | memval |= QSPI_SETUP0_NUM_D_BYTES_NO_BITS; | |
448 | memval |= QSPI_SETUP0_READ_NORMAL; | |
449 | break; | |
450 | } | |
451 | ||
452 | writel(memval, &priv->base->setup0); | |
453 | } | |
454 | ||
455 | ||
456 | static int ti_qspi_set_speed(struct udevice *bus, uint max_hz) | |
457 | { | |
458 | struct ti_qspi_priv *priv = dev_get_priv(bus); | |
459 | ||
460 | ti_spi_set_speed(priv, max_hz); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | static int ti_qspi_set_mode(struct udevice *bus, uint mode) | |
466 | { | |
467 | struct ti_qspi_priv *priv = dev_get_priv(bus); | |
468 | return __ti_qspi_set_mode(priv, mode); | |
469 | } | |
470 | ||
471 | static int ti_qspi_claim_bus(struct udevice *dev) | |
472 | { | |
473 | struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev); | |
474 | struct spi_slave *slave = dev_get_parent_priv(dev); | |
475 | struct ti_qspi_priv *priv; | |
476 | struct udevice *bus; | |
477 | ||
478 | bus = dev->parent; | |
479 | priv = dev_get_priv(bus); | |
480 | ||
481 | if (slave_plat->cs > priv->num_cs) { | |
482 | debug("invalid qspi chip select\n"); | |
483 | return -EINVAL; | |
484 | } | |
485 | ||
486 | __ti_qspi_setup_memorymap(priv, slave, true); | |
487 | ||
488 | return __ti_qspi_claim_bus(priv, slave_plat->cs); | |
489 | } | |
490 | ||
491 | static int ti_qspi_release_bus(struct udevice *dev) | |
492 | { | |
493 | struct spi_slave *slave = dev_get_parent_priv(dev); | |
494 | struct ti_qspi_priv *priv; | |
495 | struct udevice *bus; | |
496 | ||
497 | bus = dev->parent; | |
498 | priv = dev_get_priv(bus); | |
499 | ||
500 | __ti_qspi_setup_memorymap(priv, slave, false); | |
501 | __ti_qspi_release_bus(priv); | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
506 | static int ti_qspi_xfer(struct udevice *dev, unsigned int bitlen, | |
507 | const void *dout, void *din, unsigned long flags) | |
508 | { | |
509 | struct dm_spi_slave_platdata *slave = dev_get_parent_platdata(dev); | |
510 | struct ti_qspi_priv *priv; | |
511 | struct udevice *bus; | |
512 | ||
513 | bus = dev->parent; | |
514 | priv = dev_get_priv(bus); | |
515 | ||
516 | if (slave->cs > priv->num_cs) { | |
517 | debug("invalid qspi chip select\n"); | |
518 | return -EINVAL; | |
519 | } | |
520 | ||
521 | return __ti_qspi_xfer(priv, bitlen, dout, din, flags, slave->cs); | |
522 | } | |
523 | ||
524 | static int ti_qspi_probe(struct udevice *bus) | |
525 | { | |
526 | /* Nothing to do in probe */ | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int ti_qspi_ofdata_to_platdata(struct udevice *bus) | |
531 | { | |
532 | struct ti_qspi_priv *priv = dev_get_priv(bus); | |
533 | const void *blob = gd->fdt_blob; | |
534 | int node = bus->of_offset; | |
535 | fdt_addr_t addr; | |
e6601df8 | 536 | void *mmap; |
106f8139 | 537 | |
e6601df8 LV |
538 | priv->base = map_physmem(dev_get_addr(bus), sizeof(struct ti_qspi_regs), |
539 | MAP_NOCACHE); | |
540 | priv->memory_map = map_physmem(dev_get_addr_index(bus, 1), 0, | |
541 | MAP_NOCACHE); | |
106f8139 | 542 | addr = dev_get_addr_index(bus, 2); |
e6601df8 LV |
543 | mmap = map_physmem(dev_get_addr_index(bus, 2), 0, MAP_NOCACHE); |
544 | priv->ctrl_mod_mmap = (addr == FDT_ADDR_T_NONE) ? NULL : mmap; | |
106f8139 M |
545 | |
546 | priv->max_hz = fdtdec_get_int(blob, node, "spi-max-frequency", -1); | |
547 | if (priv->max_hz < 0) { | |
548 | debug("Error: Max frequency missing\n"); | |
549 | return -ENODEV; | |
550 | } | |
551 | priv->num_cs = fdtdec_get_int(blob, node, "num-cs", 4); | |
552 | ||
553 | debug("%s: regs=<0x%x>, max-frequency=%d\n", __func__, | |
554 | (int)priv->base, priv->max_hz); | |
555 | ||
556 | return 0; | |
557 | } | |
558 | ||
559 | static int ti_qspi_child_pre_probe(struct udevice *dev) | |
560 | { | |
561 | struct spi_slave *slave = dev_get_parent_priv(dev); | |
562 | struct udevice *bus = dev_get_parent(dev); | |
563 | struct ti_qspi_priv *priv = dev_get_priv(bus); | |
564 | ||
565 | slave->memory_map = priv->memory_map; | |
566 | return 0; | |
567 | } | |
568 | ||
569 | static const struct dm_spi_ops ti_qspi_ops = { | |
570 | .claim_bus = ti_qspi_claim_bus, | |
571 | .release_bus = ti_qspi_release_bus, | |
572 | .xfer = ti_qspi_xfer, | |
573 | .set_speed = ti_qspi_set_speed, | |
574 | .set_mode = ti_qspi_set_mode, | |
575 | }; | |
576 | ||
577 | static const struct udevice_id ti_qspi_ids[] = { | |
578 | { .compatible = "ti,dra7xxx-qspi" }, | |
579 | { .compatible = "ti,am4372-qspi" }, | |
580 | { } | |
581 | }; | |
582 | ||
583 | U_BOOT_DRIVER(ti_qspi) = { | |
584 | .name = "ti_qspi", | |
585 | .id = UCLASS_SPI, | |
586 | .of_match = ti_qspi_ids, | |
587 | .ops = &ti_qspi_ops, | |
588 | .ofdata_to_platdata = ti_qspi_ofdata_to_platdata, | |
589 | .priv_auto_alloc_size = sizeof(struct ti_qspi_priv), | |
590 | .probe = ti_qspi_probe, | |
591 | .child_pre_probe = ti_qspi_child_pre_probe, | |
592 | }; | |
593 | #endif /* CONFIG_DM_SPI */ |