drivers/char/hw_random/rockchip-rng.c

142

static void rk_rng_write_ctl(struct rk_rng *rng, u32 val, u32 mask)

drivers/char/hw_random/rockchip-rng.c

147

static inline void rk_rng_writel(struct rk_rng *rng, u32 val, u32 offset)

drivers/char/hw_random/rockchip-rng.c

152

static inline u32 rk_rng_readl(struct rk_rng *rng, u32 offset)

drivers/char/hw_random/rockchip-rng.c

157

static int rk_rng_enable_clks(struct rk_rng *rk_rng)

drivers/char/hw_random/rockchip-rng.c

161

ret = clk_bulk_prepare_enable(rk_rng->clk_num, rk_rng->clk_bulks);

drivers/char/hw_random/rockchip-rng.c

163

dev_err(rk_rng->dev, "Failed to enable clocks: %d\n", ret);

drivers/char/hw_random/rockchip-rng.c

172

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

175

ret = rk_rng_enable_clks(rk_rng);

drivers/char/hw_random/rockchip-rng.c

180

writel(RK_RNG_SAMPLE_CNT, rk_rng->base + TRNG_RNG_SAMPLE_CNT);

drivers/char/hw_random/rockchip-rng.c

183

rk_rng_write_ctl(rk_rng, TRNG_RNG_CTL_LEN_256_BIT |

drivers/char/hw_random/rockchip-rng.c

193

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

196

rk_rng_write_ctl(rk_rng, 0, TRNG_RNG_CTL_MASK);

drivers/char/hw_random/rockchip-rng.c

199

clk_bulk_disable_unprepare(rk_rng->clk_num, rk_rng->clk_bulks);

drivers/char/hw_random/rockchip-rng.c

204

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

209

ret = pm_runtime_resume_and_get(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

214

rk_rng_write_ctl(rk_rng, TRNG_RNG_CTL_START, TRNG_RNG_CTL_START);

drivers/char/hw_random/rockchip-rng.c

216

ret = readl_poll_timeout(rk_rng->base + TRNG_RNG_CTL, reg,

drivers/char/hw_random/rockchip-rng.c

224

memcpy_fromio(buf, rk_rng->base + TRNG_RNG_DOUT, to_read);

drivers/char/hw_random/rockchip-rng.c

226

pm_runtime_put_sync_autosuspend(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

233

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

235

return rk_rng_enable_clks(rk_rng);

drivers/char/hw_random/rockchip-rng.c

240

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

245

ret = pm_runtime_resume_and_get(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

249

rk_rng_writel(rk_rng, RKRNG_CTRL_REQ_TRNG | (RKRNG_CTRL_REQ_TRNG << 16),

drivers/char/hw_random/rockchip-rng.c

252

if (readl_poll_timeout(rk_rng->base + RKRNG_STATE, val,

drivers/char/hw_random/rockchip-rng.c

255

dev_err(rk_rng->dev, "timed out waiting for data\n");

drivers/char/hw_random/rockchip-rng.c

260

rk_rng_writel(rk_rng, RKRNG_STATE_TRNG_RDY, RKRNG_STATE);

drivers/char/hw_random/rockchip-rng.c

262

memcpy_fromio(buf, rk_rng->base + RKRNG_TRNG_DATA0, to_read);

drivers/char/hw_random/rockchip-rng.c

265

pm_runtime_put_sync_autosuspend(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

272

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

276

ret = rk_rng_enable_clks(rk_rng);

drivers/char/hw_random/rockchip-rng.c

280

version = rk_rng_readl(rk_rng, TRNG_V1_VERSION);

drivers/char/hw_random/rockchip-rng.c

282

dev_err(rk_rng->dev,

drivers/char/hw_random/rockchip-rng.c

291

if (readl_poll_timeout(rk_rng->base + TRNG_V1_STAT, status,

drivers/char/hw_random/rockchip-rng.c

294

dev_err(rk_rng->dev, "timed out waiting for hwrng to reseed\n");

drivers/char/hw_random/rockchip-rng.c

303

istat = rk_rng_readl(rk_rng, TRNG_V1_ISTAT);

drivers/char/hw_random/rockchip-rng.c

304

rk_rng_writel(rk_rng, istat, TRNG_V1_ISTAT);

drivers/char/hw_random/rockchip-rng.c

307

rk_rng_writel(rk_rng, RK_TRNG_V1_AUTO_RESEED_CNT / 16, TRNG_V1_AUTO_RQSTS);

drivers/char/hw_random/rockchip-rng.c

311

clk_bulk_disable_unprepare(rk_rng->clk_num, rk_rng->clk_bulks);

drivers/char/hw_random/rockchip-rng.c

317

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

319

clk_bulk_disable_unprepare(rk_rng->clk_num, rk_rng->clk_bulks);

drivers/char/hw_random/rockchip-rng.c

324

struct rk_rng *rk_rng = container_of(rng, struct rk_rng, rng);

drivers/char/hw_random/rockchip-rng.c

329

ret = pm_runtime_resume_and_get(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

334

reg = rk_rng_readl(rk_rng, TRNG_V1_ISTAT);

drivers/char/hw_random/rockchip-rng.c

335

rk_rng_writel(rk_rng, reg, TRNG_V1_ISTAT);

drivers/char/hw_random/rockchip-rng.c

338

rk_rng_writel(rk_rng, TRNG_V1_MODE_256_BIT, TRNG_V1_MODE);

drivers/char/hw_random/rockchip-rng.c

339

rk_rng_writel(rk_rng, TRNG_V1_CTRL_RAND, TRNG_V1_CTRL);

drivers/char/hw_random/rockchip-rng.c

341

ret = readl_poll_timeout_atomic(rk_rng->base + TRNG_V1_ISTAT, reg,

drivers/char/hw_random/rockchip-rng.c

348

memcpy_fromio(buf, rk_rng->base + TRNG_V1_RAND0, to_read);

drivers/char/hw_random/rockchip-rng.c

352

rk_rng_writel(rk_rng, reg, TRNG_V1_ISTAT);

drivers/char/hw_random/rockchip-rng.c

354

rk_rng_writel(rk_rng, TRNG_V1_CTRL_NOP, TRNG_V1_CTRL);

drivers/char/hw_random/rockchip-rng.c

356

pm_runtime_put_sync_autosuspend(rk_rng->dev);

drivers/char/hw_random/rockchip-rng.c

389

struct rk_rng *rk_rng;

drivers/char/hw_random/rockchip-rng.c

392

rk_rng = devm_kzalloc(dev, sizeof(*rk_rng), GFP_KERNEL);

drivers/char/hw_random/rockchip-rng.c

393

if (!rk_rng)

drivers/char/hw_random/rockchip-rng.c

396

rk_rng->soc_data = of_device_get_match_data(dev);

drivers/char/hw_random/rockchip-rng.c

397

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

drivers/char/hw_random/rockchip-rng.c

398

if (IS_ERR(rk_rng->base))

drivers/char/hw_random/rockchip-rng.c

399

return PTR_ERR(rk_rng->base);

drivers/char/hw_random/rockchip-rng.c

401

rk_rng->clk_num = devm_clk_bulk_get_all(dev, &rk_rng->clk_bulks);

drivers/char/hw_random/rockchip-rng.c

402

if (rk_rng->clk_num < 0)

drivers/char/hw_random/rockchip-rng.c

403

return dev_err_probe(dev, rk_rng->clk_num,

drivers/char/hw_random/rockchip-rng.c

406

if (rk_rng->soc_data->reset_optional)

drivers/char/hw_random/rockchip-rng.c

420

platform_set_drvdata(pdev, rk_rng);

drivers/char/hw_random/rockchip-rng.c

422

rk_rng->rng.name = dev_driver_string(dev);

drivers/char/hw_random/rockchip-rng.c

424

rk_rng->rng.init = rk_rng->soc_data->rk_rng_init;

drivers/char/hw_random/rockchip-rng.c

425

rk_rng->rng.cleanup = rk_rng->soc_data->rk_rng_cleanup;

drivers/char/hw_random/rockchip-rng.c

427

rk_rng->rng.read = rk_rng->soc_data->rk_rng_read;

drivers/char/hw_random/rockchip-rng.c

428

rk_rng->dev = dev;

drivers/char/hw_random/rockchip-rng.c

429

rk_rng->rng.quality = rk_rng->soc_data->quality;

drivers/char/hw_random/rockchip-rng.c

437

ret = devm_hwrng_register(dev, &rk_rng->rng);

drivers/char/hw_random/rockchip-rng.c

446

struct rk_rng *rk_rng = dev_get_drvdata(dev);

drivers/char/hw_random/rockchip-rng.c

448

rk_rng->soc_data->rk_rng_cleanup(&rk_rng->rng);

drivers/char/hw_random/rockchip-rng.c

455

struct rk_rng *rk_rng = dev_get_drvdata(dev);

drivers/char/hw_random/rockchip-rng.c

457

return rk_rng->soc_data->rk_rng_init(&rk_rng->rng);