drivers/spi/spi-armada-3700.c

116

static u32 spireg_read(struct a3700_spi *a3700_spi, u32 offset)

drivers/spi/spi-armada-3700.c

118

return readl(a3700_spi->base + offset);

drivers/spi/spi-armada-3700.c

121

static void spireg_write(struct a3700_spi *a3700_spi, u32 offset, u32 data)

drivers/spi/spi-armada-3700.c

123

writel(data, a3700_spi->base + offset);

drivers/spi/spi-armada-3700.c

126

static void a3700_spi_auto_cs_unset(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

130

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

132

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

135

static void a3700_spi_activate_cs(struct a3700_spi *a3700_spi, unsigned int cs)

drivers/spi/spi-armada-3700.c

139

val = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

141

spireg_write(a3700_spi, A3700_SPI_IF_CTRL_REG, val);

drivers/spi/spi-armada-3700.c

144

static void a3700_spi_deactivate_cs(struct a3700_spi *a3700_spi,

drivers/spi/spi-armada-3700.c

149

val = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

151

spireg_write(a3700_spi, A3700_SPI_IF_CTRL_REG, val);

drivers/spi/spi-armada-3700.c

154

static int a3700_spi_pin_mode_set(struct a3700_spi *a3700_spi,

drivers/spi/spi-armada-3700.c

159

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

176

dev_err(&a3700_spi->host->dev, "wrong pin mode %u", pin_mode);

drivers/spi/spi-armada-3700.c

180

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

185

static void a3700_spi_fifo_mode_set(struct a3700_spi *a3700_spi, bool enable)

drivers/spi/spi-armada-3700.c

189

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

194

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

197

static void a3700_spi_mode_set(struct a3700_spi *a3700_spi,

drivers/spi/spi-armada-3700.c

202

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

214

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

217

static void a3700_spi_clock_set(struct a3700_spi *a3700_spi,

drivers/spi/spi-armada-3700.c

223

prescale = DIV_ROUND_UP(clk_get_rate(a3700_spi->clk), speed_hz);

drivers/spi/spi-armada-3700.c

232

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

236

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

239

val = spireg_read(a3700_spi, A3700_SPI_IF_TIME_REG);

drivers/spi/spi-armada-3700.c

241

spireg_write(a3700_spi, A3700_SPI_IF_TIME_REG, val);

drivers/spi/spi-armada-3700.c

245

static void a3700_spi_bytelen_set(struct a3700_spi *a3700_spi, unsigned int len)

drivers/spi/spi-armada-3700.c

249

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

254

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

256

a3700_spi->byte_len = len;

drivers/spi/spi-armada-3700.c

259

static int a3700_spi_fifo_flush(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

264

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

266

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

269

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

278

static void a3700_spi_init(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

280

struct spi_controller *host = a3700_spi->host;

drivers/spi/spi-armada-3700.c

285

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

287

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

291

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

293

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

296

a3700_spi_auto_cs_unset(a3700_spi);

drivers/spi/spi-armada-3700.c

298

a3700_spi_deactivate_cs(a3700_spi, i);

drivers/spi/spi-armada-3700.c

301

a3700_spi_fifo_mode_set(a3700_spi, true);

drivers/spi/spi-armada-3700.c

304

a3700_spi_mode_set(a3700_spi, host->mode_bits);

drivers/spi/spi-armada-3700.c

307

spireg_write(a3700_spi, A3700_SPI_IF_HDR_CNT_REG, 0);

drivers/spi/spi-armada-3700.c

308

spireg_write(a3700_spi, A3700_SPI_IF_DIN_CNT_REG, 0);

drivers/spi/spi-armada-3700.c

311

spireg_write(a3700_spi, A3700_SPI_INT_MASK_REG, 0);

drivers/spi/spi-armada-3700.c

312

spireg_write(a3700_spi, A3700_SPI_INT_STAT_REG, ~0U);

drivers/spi/spi-armada-3700.c

318

struct a3700_spi *a3700_spi;

drivers/spi/spi-armada-3700.c

321

a3700_spi = spi_controller_get_devdata(host);

drivers/spi/spi-armada-3700.c

324

cause = spireg_read(a3700_spi, A3700_SPI_INT_STAT_REG);

drivers/spi/spi-armada-3700.c

326

if (!cause || !(a3700_spi->wait_mask & cause))

drivers/spi/spi-armada-3700.c

330

spireg_write(a3700_spi, A3700_SPI_INT_MASK_REG, 0);

drivers/spi/spi-armada-3700.c

331

spireg_write(a3700_spi, A3700_SPI_INT_STAT_REG, cause);

drivers/spi/spi-armada-3700.c

334

complete(&a3700_spi->done);

drivers/spi/spi-armada-3700.c

341

struct a3700_spi *a3700_spi;

drivers/spi/spi-armada-3700.c

346

a3700_spi = spi_controller_get_devdata(spi->controller);

drivers/spi/spi-armada-3700.c

354

ctrl_reg = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

355

if (a3700_spi->wait_mask & ctrl_reg)

drivers/spi/spi-armada-3700.c

358

reinit_completion(&a3700_spi->done);

drivers/spi/spi-armada-3700.c

360

spireg_write(a3700_spi, A3700_SPI_INT_MASK_REG,

drivers/spi/spi-armada-3700.c

361

a3700_spi->wait_mask);

drivers/spi/spi-armada-3700.c

364

time_left = wait_for_completion_timeout(&a3700_spi->done,

drivers/spi/spi-armada-3700.c

367

a3700_spi->wait_mask = 0;

drivers/spi/spi-armada-3700.c

380

ctrl_reg = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

381

if (a3700_spi->wait_mask & ctrl_reg)

drivers/spi/spi-armada-3700.c

384

spireg_write(a3700_spi, A3700_SPI_INT_MASK_REG, 0);

drivers/spi/spi-armada-3700.c

393

struct a3700_spi *a3700_spi;

drivers/spi/spi-armada-3700.c

395

a3700_spi = spi_controller_get_devdata(spi->controller);

drivers/spi/spi-armada-3700.c

396

a3700_spi->wait_mask = bit_mask;

drivers/spi/spi-armada-3700.c

401

static void a3700_spi_fifo_thres_set(struct a3700_spi *a3700_spi,

drivers/spi/spi-armada-3700.c

406

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

411

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

417

struct a3700_spi *a3700_spi;

drivers/spi/spi-armada-3700.c

419

a3700_spi = spi_controller_get_devdata(spi->controller);

drivers/spi/spi-armada-3700.c

421

a3700_spi_clock_set(a3700_spi, xfer->speed_hz);

drivers/spi/spi-armada-3700.c

426

a3700_spi_bytelen_set(a3700_spi, 4);

drivers/spi/spi-armada-3700.c

429

a3700_spi->tx_buf = xfer->tx_buf;

drivers/spi/spi-armada-3700.c

430

a3700_spi->rx_buf = xfer->rx_buf;

drivers/spi/spi-armada-3700.c

431

a3700_spi->buf_len = xfer->len;

drivers/spi/spi-armada-3700.c

436

struct a3700_spi *a3700_spi = spi_controller_get_devdata(spi->controller);

drivers/spi/spi-armada-3700.c

439

a3700_spi_activate_cs(a3700_spi, spi_get_chipselect(spi, 0));

drivers/spi/spi-armada-3700.c

441

a3700_spi_deactivate_cs(a3700_spi, spi_get_chipselect(spi, 0));

drivers/spi/spi-armada-3700.c

444

static void a3700_spi_header_set(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

450

spireg_write(a3700_spi, A3700_SPI_IF_INST_REG, 0);

drivers/spi/spi-armada-3700.c

451

spireg_write(a3700_spi, A3700_SPI_IF_ADDR_REG, 0);

drivers/spi/spi-armada-3700.c

452

spireg_write(a3700_spi, A3700_SPI_IF_RMODE_REG, 0);

drivers/spi/spi-armada-3700.c

453

spireg_write(a3700_spi, A3700_SPI_IF_HDR_CNT_REG, 0);

drivers/spi/spi-armada-3700.c

456

if (a3700_spi->tx_buf) {

drivers/spi/spi-armada-3700.c

465

addr_cnt = a3700_spi->buf_len % 4;

drivers/spi/spi-armada-3700.c

469

spireg_write(a3700_spi, A3700_SPI_IF_HDR_CNT_REG, val);

drivers/spi/spi-armada-3700.c

472

a3700_spi->buf_len -= addr_cnt;

drivers/spi/spi-armada-3700.c

477

val = (val << 8) | a3700_spi->tx_buf[0];

drivers/spi/spi-armada-3700.c

478

a3700_spi->tx_buf++;

drivers/spi/spi-armada-3700.c

480

spireg_write(a3700_spi, A3700_SPI_IF_ADDR_REG, val);

drivers/spi/spi-armada-3700.c

485

static int a3700_is_wfifo_full(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

489

val = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

493

static int a3700_spi_fifo_write(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

497

while (!a3700_is_wfifo_full(a3700_spi) && a3700_spi->buf_len) {

drivers/spi/spi-armada-3700.c

498

val = *(u32 *)a3700_spi->tx_buf;

drivers/spi/spi-armada-3700.c

499

spireg_write(a3700_spi, A3700_SPI_DATA_OUT_REG, cpu_to_le32(val));

drivers/spi/spi-armada-3700.c

500

a3700_spi->buf_len -= 4;

drivers/spi/spi-armada-3700.c

501

a3700_spi->tx_buf += 4;

drivers/spi/spi-armada-3700.c

507

static int a3700_is_rfifo_empty(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

509

u32 val = spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG);

drivers/spi/spi-armada-3700.c

514

static int a3700_spi_fifo_read(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

518

while (!a3700_is_rfifo_empty(a3700_spi) && a3700_spi->buf_len) {

drivers/spi/spi-armada-3700.c

519

val = spireg_read(a3700_spi, A3700_SPI_DATA_IN_REG);

drivers/spi/spi-armada-3700.c

520

if (a3700_spi->buf_len >= 4) {

drivers/spi/spi-armada-3700.c

522

memcpy(a3700_spi->rx_buf, &val, 4);

drivers/spi/spi-armada-3700.c

524

a3700_spi->buf_len -= 4;

drivers/spi/spi-armada-3700.c

525

a3700_spi->rx_buf += 4;

drivers/spi/spi-armada-3700.c

532

while (a3700_spi->buf_len) {

drivers/spi/spi-armada-3700.c

533

*a3700_spi->rx_buf = val & 0xff;

drivers/spi/spi-armada-3700.c

536

a3700_spi->buf_len--;

drivers/spi/spi-armada-3700.c

537

a3700_spi->rx_buf++;

drivers/spi/spi-armada-3700.c

545

static void a3700_spi_transfer_abort_fifo(struct a3700_spi *a3700_spi)

drivers/spi/spi-armada-3700.c

550

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

552

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

555

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

561

a3700_spi_fifo_flush(a3700_spi);

drivers/spi/spi-armada-3700.c

564

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

570

struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);

drivers/spi/spi-armada-3700.c

574

ret = clk_enable(a3700_spi->clk);

drivers/spi/spi-armada-3700.c

581

ret = a3700_spi_fifo_flush(a3700_spi);

drivers/spi/spi-armada-3700.c

585

a3700_spi_mode_set(a3700_spi, spi->mode);

drivers/spi/spi-armada-3700.c

594

struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);

drivers/spi/spi-armada-3700.c

600

a3700_spi_fifo_mode_set(a3700_spi, true);

drivers/spi/spi-armada-3700.c

604

a3700_spi_fifo_thres_set(a3700_spi, byte_len);

drivers/spi/spi-armada-3700.c

611

a3700_spi_pin_mode_set(a3700_spi, nbits, xfer->rx_buf ? true : false);

drivers/spi/spi-armada-3700.c

614

a3700_spi_fifo_flush(a3700_spi);

drivers/spi/spi-armada-3700.c

617

a3700_spi_header_set(a3700_spi);

drivers/spi/spi-armada-3700.c

623

spireg_write(a3700_spi, A3700_SPI_DATA_OUT_REG, 0);

drivers/spi/spi-armada-3700.c

626

spireg_write(a3700_spi, A3700_SPI_IF_DIN_CNT_REG,

drivers/spi/spi-armada-3700.c

627

a3700_spi->buf_len);

drivers/spi/spi-armada-3700.c

629

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

632

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

635

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

637

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

645

a3700_spi->xmit_data = (a3700_spi->buf_len != 0);

drivers/spi/spi-armada-3700.c

648

while (a3700_spi->buf_len) {

drivers/spi/spi-armada-3700.c

649

if (a3700_spi->tx_buf) {

drivers/spi/spi-armada-3700.c

659

ret = a3700_spi_fifo_write(a3700_spi);

drivers/spi/spi-armada-3700.c

662

} else if (a3700_spi->rx_buf) {

drivers/spi/spi-armada-3700.c

672

ret = a3700_spi_fifo_read(a3700_spi);

drivers/spi/spi-armada-3700.c

690

if (a3700_spi->tx_buf) {

drivers/spi/spi-armada-3700.c

691

if (a3700_spi->xmit_data) {

drivers/spi/spi-armada-3700.c

709

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

711

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

715

val = spireg_read(a3700_spi, A3700_SPI_IF_CFG_REG);

drivers/spi/spi-armada-3700.c

728

spireg_write(a3700_spi, A3700_SPI_IF_CFG_REG, val);

drivers/spi/spi-armada-3700.c

732

a3700_spi_transfer_abort_fifo(a3700_spi);

drivers/spi/spi-armada-3700.c

743

struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);

drivers/spi/spi-armada-3700.c

747

a3700_spi_fifo_mode_set(a3700_spi, false);

drivers/spi/spi-armada-3700.c

749

while (a3700_spi->buf_len) {

drivers/spi/spi-armada-3700.c

754

if (a3700_spi->buf_len < 4)

drivers/spi/spi-armada-3700.c

755

a3700_spi_bytelen_set(a3700_spi, 1);

drivers/spi/spi-armada-3700.c

757

if (a3700_spi->byte_len == 1)

drivers/spi/spi-armada-3700.c

758

val = *a3700_spi->tx_buf;

drivers/spi/spi-armada-3700.c

760

val = *(u32 *)a3700_spi->tx_buf;

drivers/spi/spi-armada-3700.c

762

spireg_write(a3700_spi, A3700_SPI_DATA_OUT_REG, val);

drivers/spi/spi-armada-3700.c

765

while (!(spireg_read(a3700_spi, A3700_SPI_IF_CTRL_REG) &

drivers/spi/spi-armada-3700.c

769

val = spireg_read(a3700_spi, A3700_SPI_DATA_IN_REG);

drivers/spi/spi-armada-3700.c

771

memcpy(a3700_spi->rx_buf, &val, a3700_spi->byte_len);

drivers/spi/spi-armada-3700.c

773

a3700_spi->buf_len -= a3700_spi->byte_len;

drivers/spi/spi-armada-3700.c

774

a3700_spi->tx_buf += a3700_spi->byte_len;

drivers/spi/spi-armada-3700.c

775

a3700_spi->rx_buf += a3700_spi->byte_len;

drivers/spi/spi-armada-3700.c

799

struct a3700_spi *a3700_spi = spi_controller_get_devdata(host);

drivers/spi/spi-armada-3700.c

801

clk_disable(a3700_spi->clk);

drivers/spi/spi-armada-3700.c

817

struct a3700_spi *spi;