drivers/spi/spi-st-ssc4.c

101

count = spi_st->words_remaining;

drivers/spi/spi-st-ssc4.c

104

word = readl_relaxed(spi_st->base + SSC_RBUF);

drivers/spi/spi-st-ssc4.c

106

if (spi_st->rx_ptr) {

drivers/spi/spi-st-ssc4.c

107

if (spi_st->bytes_per_word == 1) {

drivers/spi/spi-st-ssc4.c

108

*spi_st->rx_ptr++ = (uint8_t)word;

drivers/spi/spi-st-ssc4.c

110

*spi_st->rx_ptr++ = (word >> 8);

drivers/spi/spi-st-ssc4.c

111

*spi_st->rx_ptr++ = word & 0xff;

drivers/spi/spi-st-ssc4.c

115

spi_st->words_remaining -= count;

drivers/spi/spi-st-ssc4.c

121

struct spi_st *spi_st = spi_controller_get_devdata(host);

drivers/spi/spi-st-ssc4.c

125

spi_st->tx_ptr = t->tx_buf;

drivers/spi/spi-st-ssc4.c

126

spi_st->rx_ptr = t->rx_buf;

drivers/spi/spi-st-ssc4.c

133

spi_st->bytes_per_word = 2;

drivers/spi/spi-st-ssc4.c

134

spi_st->words_remaining = t->len / 2;

drivers/spi/spi-st-ssc4.c

141

spi_st->bytes_per_word = 2;

drivers/spi/spi-st-ssc4.c

142

spi_st->words_remaining = t->len / 2;

drivers/spi/spi-st-ssc4.c

145

ctl = readl_relaxed(spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

146

writel_relaxed((ctl | 0xf), spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

148

readl_relaxed(spi_st->base + SSC_RBUF);

drivers/spi/spi-st-ssc4.c

151

spi_st->bytes_per_word = 1;

drivers/spi/spi-st-ssc4.c

152

spi_st->words_remaining = t->len;

drivers/spi/spi-st-ssc4.c

155

reinit_completion(&spi_st->done);

drivers/spi/spi-st-ssc4.c

158

ssc_write_tx_fifo(spi_st);

drivers/spi/spi-st-ssc4.c

159

writel_relaxed(SSC_IEN_TEEN, spi_st->base + SSC_IEN);

drivers/spi/spi-st-ssc4.c

162

wait_for_completion(&spi_st->done);

drivers/spi/spi-st-ssc4.c

166

writel_relaxed(ctl, spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

177

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

drivers/spi/spi-st-ssc4.c

191

spi_st_clk = clk_get_rate(spi_st->clk);

drivers/spi/spi-st-ssc4.c

201

spi_st->baud = spi_st_clk / (2 * sscbrg);

drivers/spi/spi-st-ssc4.c

205

writel_relaxed(sscbrg, spi_st->base + SSC_BRG);

drivers/spi/spi-st-ssc4.c

209

hz, spi_st->baud, sscbrg);

drivers/spi/spi-st-ssc4.c

212

var = readl_relaxed(spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

241

writel_relaxed(var, spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

244

readl_relaxed(spi_st->base + SSC_RBUF);

drivers/spi/spi-st-ssc4.c

252

struct spi_st *spi_st = (struct spi_st *)dev_id;

drivers/spi/spi-st-ssc4.c

255

ssc_read_rx_fifo(spi_st);

drivers/spi/spi-st-ssc4.c

258

if (spi_st->words_remaining) {

drivers/spi/spi-st-ssc4.c

259

ssc_write_tx_fifo(spi_st);

drivers/spi/spi-st-ssc4.c

262

writel_relaxed(0x0, spi_st->base + SSC_IEN);

drivers/spi/spi-st-ssc4.c

267

readl(spi_st->base + SSC_IEN);

drivers/spi/spi-st-ssc4.c

268

complete(&spi_st->done);

drivers/spi/spi-st-ssc4.c

278

struct spi_st *spi_st;

drivers/spi/spi-st-ssc4.c

282

host = spi_alloc_host(&pdev->dev, sizeof(*spi_st));

drivers/spi/spi-st-ssc4.c

294

spi_st = spi_controller_get_devdata(host);

drivers/spi/spi-st-ssc4.c

296

spi_st->clk = devm_clk_get(&pdev->dev, "ssc");

drivers/spi/spi-st-ssc4.c

297

if (IS_ERR(spi_st->clk)) {

drivers/spi/spi-st-ssc4.c

299

ret = PTR_ERR(spi_st->clk);

drivers/spi/spi-st-ssc4.c

303

ret = clk_prepare_enable(spi_st->clk);

drivers/spi/spi-st-ssc4.c

307

init_completion(&spi_st->done);

drivers/spi/spi-st-ssc4.c

310

spi_st->base = devm_platform_ioremap_resource(pdev, 0);

drivers/spi/spi-st-ssc4.c

311

if (IS_ERR(spi_st->base)) {

drivers/spi/spi-st-ssc4.c

312

ret = PTR_ERR(spi_st->base);

drivers/spi/spi-st-ssc4.c

317

writel_relaxed(0x0, spi_st->base + SSC_I2C);

drivers/spi/spi-st-ssc4.c

318

var = readw_relaxed(spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

320

writel_relaxed(var, spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

323

var = readl_relaxed(spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

325

writel_relaxed(var, spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

328

var = readl_relaxed(spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

330

writel_relaxed(var, spi_st->base + SSC_CTL);

drivers/spi/spi-st-ssc4.c

340

pdev->name, spi_st);

drivers/spi/spi-st-ssc4.c

363

clk_disable_unprepare(spi_st->clk);

drivers/spi/spi-st-ssc4.c

372

struct spi_st *spi_st = spi_controller_get_devdata(host);

drivers/spi/spi-st-ssc4.c

376

clk_disable_unprepare(spi_st->clk);

drivers/spi/spi-st-ssc4.c

384

struct spi_st *spi_st = spi_controller_get_devdata(host);

drivers/spi/spi-st-ssc4.c

386

writel_relaxed(0, spi_st->base + SSC_IEN);

drivers/spi/spi-st-ssc4.c

389

clk_disable_unprepare(spi_st->clk);

drivers/spi/spi-st-ssc4.c

397

struct spi_st *spi_st = spi_controller_get_devdata(host);

drivers/spi/spi-st-ssc4.c

400

ret = clk_prepare_enable(spi_st->clk);

drivers/spi/spi-st-ssc4.c

69

static void ssc_write_tx_fifo(struct spi_st *spi_st)

drivers/spi/spi-st-ssc4.c

74

if (spi_st->words_remaining > FIFO_SIZE)

drivers/spi/spi-st-ssc4.c

77

count = spi_st->words_remaining;

drivers/spi/spi-st-ssc4.c

80

if (spi_st->tx_ptr) {

drivers/spi/spi-st-ssc4.c

81

if (spi_st->bytes_per_word == 1) {

drivers/spi/spi-st-ssc4.c

82

word = *spi_st->tx_ptr++;

drivers/spi/spi-st-ssc4.c

84

word = *spi_st->tx_ptr++;

drivers/spi/spi-st-ssc4.c

85

word = *spi_st->tx_ptr++ | (word << 8);

drivers/spi/spi-st-ssc4.c

88

writel_relaxed(word, spi_st->base + SSC_TBUF);

drivers/spi/spi-st-ssc4.c

93

static void ssc_read_rx_fifo(struct spi_st *spi_st)

drivers/spi/spi-st-ssc4.c

98

if (spi_st->words_remaining > FIFO_SIZE)