Lines Matching refs:ecc
119 static inline void mtk_ecc_wait_idle(struct mtk_ecc *ecc, in mtk_ecc_wait_idle() argument
122 struct device *dev = ecc->dev; in mtk_ecc_wait_idle()
126 ret = readl_poll_timeout_atomic(ecc->regs + ECC_IDLE_REG(op), val, in mtk_ecc_wait_idle()
136 struct mtk_ecc *ecc = id; in mtk_ecc_irq() local
139 dec = readw(ecc->regs + ecc->caps->ecc_regs[ECC_DECIRQ_STA]) in mtk_ecc_irq()
142 dec = readw(ecc->regs + ecc->caps->ecc_regs[ECC_DECDONE]); in mtk_ecc_irq()
143 if (dec & ecc->sectors) { in mtk_ecc_irq()
148 readw(ecc->regs + ecc->caps->ecc_regs[ECC_DECIRQ_STA]); in mtk_ecc_irq()
149 ecc->sectors = 0; in mtk_ecc_irq()
150 complete(&ecc->done); in mtk_ecc_irq()
155 enc = readl(ecc->regs + ecc->caps->ecc_regs[ECC_ENCIRQ_STA]) in mtk_ecc_irq()
158 complete(&ecc->done); in mtk_ecc_irq()
166 static int mtk_ecc_config(struct mtk_ecc *ecc, struct mtk_ecc_config *config) in mtk_ecc_config() argument
171 for (i = 0; i < ecc->caps->num_ecc_strength; i++) { in mtk_ecc_config()
172 if (ecc->caps->ecc_strength[i] == config->strength) in mtk_ecc_config()
176 if (i == ecc->caps->num_ecc_strength) { in mtk_ecc_config()
177 dev_err(ecc->dev, "invalid ecc strength %d\n", in mtk_ecc_config()
188 reg = ecc_bit | (config->mode << ecc->caps->ecc_mode_shift); in mtk_ecc_config()
190 writel(reg, ecc->regs + ECC_ENCCNFG); in mtk_ecc_config()
194 ecc->regs + ECC_ENCDIADDR); in mtk_ecc_config()
199 config->strength * ecc->caps->parity_bits; in mtk_ecc_config()
201 reg = ecc_bit | (config->mode << ecc->caps->ecc_mode_shift); in mtk_ecc_config()
204 writel(reg, ecc->regs + ECC_DECCNFG); in mtk_ecc_config()
207 ecc->sectors = 1 << (config->sectors - 1); in mtk_ecc_config()
213 void mtk_ecc_get_stats(struct mtk_ecc *ecc, struct mtk_ecc_stats *stats, in mtk_ecc_get_stats() argument
224 err = readl(ecc->regs + ECC_DECENUM0 + offset); in mtk_ecc_get_stats()
225 err = err >> ((i % 4) * ecc->caps->err_shift); in mtk_ecc_get_stats()
226 err &= ecc->caps->err_mask; in mtk_ecc_get_stats()
227 if (err == ecc->caps->err_mask) { in mtk_ecc_get_stats()
241 void mtk_ecc_release(struct mtk_ecc *ecc) in mtk_ecc_release() argument
243 clk_disable_unprepare(ecc->clk); in mtk_ecc_release()
244 put_device(ecc->dev); in mtk_ecc_release()
248 static void mtk_ecc_hw_init(struct mtk_ecc *ecc) in mtk_ecc_hw_init() argument
250 mtk_ecc_wait_idle(ecc, ECC_ENCODE); in mtk_ecc_hw_init()
251 writew(ECC_OP_DISABLE, ecc->regs + ECC_ENCCON); in mtk_ecc_hw_init()
253 mtk_ecc_wait_idle(ecc, ECC_DECODE); in mtk_ecc_hw_init()
254 writel(ECC_OP_DISABLE, ecc->regs + ECC_DECCON); in mtk_ecc_hw_init()
260 struct mtk_ecc *ecc; in mtk_ecc_get() local
266 ecc = platform_get_drvdata(pdev); in mtk_ecc_get()
267 if (!ecc) { in mtk_ecc_get()
272 clk_prepare_enable(ecc->clk); in mtk_ecc_get()
273 mtk_ecc_hw_init(ecc); in mtk_ecc_get()
275 return ecc; in mtk_ecc_get()
280 struct mtk_ecc *ecc = NULL; in of_mtk_ecc_get() local
285 ecc = mtk_ecc_get(np); in of_mtk_ecc_get()
289 return ecc; in of_mtk_ecc_get()
293 int mtk_ecc_enable(struct mtk_ecc *ecc, struct mtk_ecc_config *config) in mtk_ecc_enable() argument
299 ret = mutex_lock_interruptible(&ecc->lock); in mtk_ecc_enable()
301 dev_err(ecc->dev, "interrupted when attempting to lock\n"); in mtk_ecc_enable()
305 mtk_ecc_wait_idle(ecc, op); in mtk_ecc_enable()
307 ret = mtk_ecc_config(ecc, config); in mtk_ecc_enable()
309 mutex_unlock(&ecc->lock); in mtk_ecc_enable()
314 init_completion(&ecc->done); in mtk_ecc_enable()
321 if (ecc->caps->pg_irq_sel && config->mode == ECC_NFI_MODE) in mtk_ecc_enable()
324 writew(reg_val, ecc->regs + in mtk_ecc_enable()
325 ecc->caps->ecc_regs[ECC_ENCIRQ_EN]); in mtk_ecc_enable()
327 writew(reg_val, ecc->regs + in mtk_ecc_enable()
328 ecc->caps->ecc_regs[ECC_DECIRQ_EN]); in mtk_ecc_enable()
331 writew(ECC_OP_ENABLE, ecc->regs + ECC_CTL_REG(op)); in mtk_ecc_enable()
337 void mtk_ecc_disable(struct mtk_ecc *ecc) in mtk_ecc_disable() argument
342 if (readw(ecc->regs + ECC_CTL_REG(op)) != ECC_OP_ENABLE) in mtk_ecc_disable()
346 mtk_ecc_wait_idle(ecc, op); in mtk_ecc_disable()
352 readw(ecc->regs + ecc->caps->ecc_regs[ECC_DECDONE]); in mtk_ecc_disable()
353 writew(0, ecc->regs + ecc->caps->ecc_regs[ECC_DECIRQ_EN]); in mtk_ecc_disable()
355 writew(0, ecc->regs + ecc->caps->ecc_regs[ECC_ENCIRQ_EN]); in mtk_ecc_disable()
358 writew(ECC_OP_DISABLE, ecc->regs + ECC_CTL_REG(op)); in mtk_ecc_disable()
360 mutex_unlock(&ecc->lock); in mtk_ecc_disable()
364 int mtk_ecc_wait_done(struct mtk_ecc *ecc, enum mtk_ecc_operation op) in mtk_ecc_wait_done() argument
368 ret = wait_for_completion_timeout(&ecc->done, msecs_to_jiffies(500)); in mtk_ecc_wait_done()
370 dev_err(ecc->dev, "%s timeout - interrupt did not arrive)\n", in mtk_ecc_wait_done()
379 int mtk_ecc_encode(struct mtk_ecc *ecc, struct mtk_ecc_config *config, in mtk_ecc_encode() argument
386 addr = dma_map_single(ecc->dev, data, bytes, DMA_TO_DEVICE); in mtk_ecc_encode()
387 ret = dma_mapping_error(ecc->dev, addr); in mtk_ecc_encode()
389 dev_err(ecc->dev, "dma mapping error\n"); in mtk_ecc_encode()
395 ret = mtk_ecc_enable(ecc, config); in mtk_ecc_encode()
397 dma_unmap_single(ecc->dev, addr, bytes, DMA_TO_DEVICE); in mtk_ecc_encode()
401 ret = mtk_ecc_wait_done(ecc, ECC_ENCODE); in mtk_ecc_encode()
405 mtk_ecc_wait_idle(ecc, ECC_ENCODE); in mtk_ecc_encode()
408 len = (config->strength * ecc->caps->parity_bits + 7) >> 3; in mtk_ecc_encode()
411 __ioread32_copy(ecc->eccdata, in mtk_ecc_encode()
412 ecc->regs + ecc->caps->ecc_regs[ECC_ENCPAR00], in mtk_ecc_encode()
416 memcpy(data + bytes, ecc->eccdata, len); in mtk_ecc_encode()
419 dma_unmap_single(ecc->dev, addr, bytes, DMA_TO_DEVICE); in mtk_ecc_encode()
420 mtk_ecc_disable(ecc); in mtk_ecc_encode()
426 void mtk_ecc_adjust_strength(struct mtk_ecc *ecc, u32 *p) in mtk_ecc_adjust_strength() argument
428 const u8 *ecc_strength = ecc->caps->ecc_strength; in mtk_ecc_adjust_strength()
431 for (i = 0; i < ecc->caps->num_ecc_strength; i++) { in mtk_ecc_adjust_strength()
441 *p = ecc_strength[ecc->caps->num_ecc_strength - 1]; in mtk_ecc_adjust_strength()
445 unsigned int mtk_ecc_get_parity_bits(struct mtk_ecc *ecc) in mtk_ecc_get_parity_bits() argument
447 return ecc->caps->parity_bits; in mtk_ecc_get_parity_bits()
501 struct mtk_ecc *ecc; in mtk_ecc_probe() local
506 ecc = devm_kzalloc(dev, sizeof(*ecc), GFP_KERNEL); in mtk_ecc_probe()
507 if (!ecc) in mtk_ecc_probe()
510 ecc->caps = of_device_get_match_data(dev); in mtk_ecc_probe()
512 max_eccdata_size = ecc->caps->num_ecc_strength - 1; in mtk_ecc_probe()
513 max_eccdata_size = ecc->caps->ecc_strength[max_eccdata_size]; in mtk_ecc_probe()
514 max_eccdata_size = (max_eccdata_size * ecc->caps->parity_bits + 7) >> 3; in mtk_ecc_probe()
516 ecc->eccdata = devm_kzalloc(dev, max_eccdata_size, GFP_KERNEL); in mtk_ecc_probe()
517 if (!ecc->eccdata) in mtk_ecc_probe()
521 ecc->regs = devm_ioremap_resource(dev, res); in mtk_ecc_probe()
522 if (IS_ERR(ecc->regs)) { in mtk_ecc_probe()
523 dev_err(dev, "failed to map regs: %ld\n", PTR_ERR(ecc->regs)); in mtk_ecc_probe()
524 return PTR_ERR(ecc->regs); in mtk_ecc_probe()
527 ecc->clk = devm_clk_get(dev, NULL); in mtk_ecc_probe()
528 if (IS_ERR(ecc->clk)) { in mtk_ecc_probe()
529 dev_err(dev, "failed to get clock: %ld\n", PTR_ERR(ecc->clk)); in mtk_ecc_probe()
530 return PTR_ERR(ecc->clk); in mtk_ecc_probe()
543 ret = devm_request_irq(dev, irq, mtk_ecc_irq, 0x0, "mtk-ecc", ecc); in mtk_ecc_probe()
549 ecc->dev = dev; in mtk_ecc_probe()
550 mutex_init(&ecc->lock); in mtk_ecc_probe()
551 platform_set_drvdata(pdev, ecc); in mtk_ecc_probe()
560 struct mtk_ecc *ecc = dev_get_drvdata(dev); in mtk_ecc_suspend() local
562 clk_disable_unprepare(ecc->clk); in mtk_ecc_suspend()
569 struct mtk_ecc *ecc = dev_get_drvdata(dev); in mtk_ecc_resume() local
572 ret = clk_prepare_enable(ecc->clk); in mtk_ecc_resume()