Lines Matching refs:rngc
74 static inline void imx_rngc_irq_mask_clear(struct imx_rngc *rngc) in imx_rngc_irq_mask_clear() argument
79 ctrl = readl(rngc->base + RNGC_CONTROL); in imx_rngc_irq_mask_clear()
81 writel(ctrl, rngc->base + RNGC_CONTROL); in imx_rngc_irq_mask_clear()
88 cmd = readl(rngc->base + RNGC_COMMAND); in imx_rngc_irq_mask_clear()
90 writel(cmd, rngc->base + RNGC_COMMAND); in imx_rngc_irq_mask_clear()
93 static inline void imx_rngc_irq_unmask(struct imx_rngc *rngc) in imx_rngc_irq_unmask() argument
97 ctrl = readl(rngc->base + RNGC_CONTROL); in imx_rngc_irq_unmask()
99 writel(ctrl, rngc->base + RNGC_CONTROL); in imx_rngc_irq_unmask()
102 static int imx_rngc_self_test(struct imx_rngc *rngc) in imx_rngc_self_test() argument
107 imx_rngc_irq_unmask(rngc); in imx_rngc_self_test()
110 cmd = readl(rngc->base + RNGC_COMMAND); in imx_rngc_self_test()
111 writel(cmd | RNGC_CMD_SELF_TEST, rngc->base + RNGC_COMMAND); in imx_rngc_self_test()
113 ret = wait_for_completion_timeout(&rngc->rng_op_done, RNGC_TIMEOUT); in imx_rngc_self_test()
114 imx_rngc_irq_mask_clear(rngc); in imx_rngc_self_test()
118 return rngc->err_reg ? -EIO : 0; in imx_rngc_self_test()
123 struct imx_rngc *rngc = container_of(rng, struct imx_rngc, rng); in imx_rngc_read() local
129 status = readl(rngc->base + RNGC_STATUS); in imx_rngc_read()
141 *(u32 *)data = readl(rngc->base + RNGC_FIFO); in imx_rngc_read()
154 struct imx_rngc *rngc = (struct imx_rngc *)priv; in imx_rngc_irq() local
161 status = readl(rngc->base + RNGC_STATUS); in imx_rngc_irq()
162 rngc->err_reg = readl(rngc->base + RNGC_ERROR); in imx_rngc_irq()
164 imx_rngc_irq_mask_clear(rngc); in imx_rngc_irq()
167 complete(&rngc->rng_op_done); in imx_rngc_irq()
174 struct imx_rngc *rngc = container_of(rng, struct imx_rngc, rng); in imx_rngc_init() local
179 cmd = readl(rngc->base + RNGC_COMMAND); in imx_rngc_init()
180 writel(cmd | RNGC_CMD_CLR_ERR, rngc->base + RNGC_COMMAND); in imx_rngc_init()
182 imx_rngc_irq_unmask(rngc); in imx_rngc_init()
187 cmd = readl(rngc->base + RNGC_COMMAND); in imx_rngc_init()
188 writel(cmd | RNGC_CMD_SEED, rngc->base + RNGC_COMMAND); in imx_rngc_init()
190 ret = wait_for_completion_timeout(&rngc->rng_op_done, in imx_rngc_init()
198 } while (rngc->err_reg == RNGC_ERROR_STATUS_STAT_ERR); in imx_rngc_init()
200 if (rngc->err_reg) { in imx_rngc_init()
209 ctrl = readl(rngc->base + RNGC_CONTROL); in imx_rngc_init()
211 writel(ctrl, rngc->base + RNGC_CONTROL); in imx_rngc_init()
221 imx_rngc_irq_mask_clear(rngc); in imx_rngc_init()
227 struct imx_rngc *rngc = container_of(rng, struct imx_rngc, rng); in imx_rngc_cleanup() local
229 imx_rngc_irq_mask_clear(rngc); in imx_rngc_cleanup()
234 struct imx_rngc *rngc; in imx_rngc_probe() local
240 rngc = devm_kzalloc(&pdev->dev, sizeof(*rngc), GFP_KERNEL); in imx_rngc_probe()
241 if (!rngc) in imx_rngc_probe()
244 rngc->base = devm_platform_ioremap_resource(pdev, 0); in imx_rngc_probe()
245 if (IS_ERR(rngc->base)) in imx_rngc_probe()
246 return PTR_ERR(rngc->base); in imx_rngc_probe()
248 rngc->clk = devm_clk_get(&pdev->dev, NULL); in imx_rngc_probe()
249 if (IS_ERR(rngc->clk)) { in imx_rngc_probe()
251 return PTR_ERR(rngc->clk); in imx_rngc_probe()
258 ret = clk_prepare_enable(rngc->clk); in imx_rngc_probe()
262 ver_id = readl(rngc->base + RNGC_VER_ID); in imx_rngc_probe()
274 irq, imx_rngc_irq, 0, pdev->name, (void *)rngc); in imx_rngc_probe()
276 dev_err(rngc->dev, "Can't get interrupt working.\n"); in imx_rngc_probe()
280 init_completion(&rngc->rng_op_done); in imx_rngc_probe()
282 rngc->rng.name = pdev->name; in imx_rngc_probe()
283 rngc->rng.init = imx_rngc_init; in imx_rngc_probe()
284 rngc->rng.read = imx_rngc_read; in imx_rngc_probe()
285 rngc->rng.cleanup = imx_rngc_cleanup; in imx_rngc_probe()
286 rngc->rng.quality = 19; in imx_rngc_probe()
288 rngc->dev = &pdev->dev; in imx_rngc_probe()
289 platform_set_drvdata(pdev, rngc); in imx_rngc_probe()
291 imx_rngc_irq_mask_clear(rngc); in imx_rngc_probe()
294 ret = imx_rngc_self_test(rngc); in imx_rngc_probe()
296 dev_err(rngc->dev, "self test failed\n"); in imx_rngc_probe()
301 ret = hwrng_register(&rngc->rng); in imx_rngc_probe()
314 clk_disable_unprepare(rngc->clk); in imx_rngc_probe()
321 struct imx_rngc *rngc = platform_get_drvdata(pdev); in imx_rngc_remove() local
323 hwrng_unregister(&rngc->rng); in imx_rngc_remove()
325 clk_disable_unprepare(rngc->clk); in imx_rngc_remove()
332 struct imx_rngc *rngc = dev_get_drvdata(dev); in imx_rngc_suspend() local
334 clk_disable_unprepare(rngc->clk); in imx_rngc_suspend()
341 struct imx_rngc *rngc = dev_get_drvdata(dev); in imx_rngc_resume() local
343 clk_prepare_enable(rngc->clk); in imx_rngc_resume()