1 // SPDX-License-Identifier: GPL-2.0
10 #include <linux/clk.h>
68 	writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);  in jz4780_bch_reset()
71 	reg = params->size << BCH_BHCNT_BLOCKSIZE_SHIFT;  in jz4780_bch_reset()
72 	reg |= params->bytes << BCH_BHCNT_PARITYSIZE_SHIFT;  in jz4780_bch_reset()
73 	writel(reg, bch->base + BCH_BHCNT);  in jz4780_bch_reset()
77 	reg |= params->strength << BCH_BHCR_BSEL_SHIFT;  in jz4780_bch_reset()
80 	writel(reg, bch->base + BCH_BHCR);  in jz4780_bch_reset()
85 	writel(readl(bch->base + BCH_BHINT), bch->base + BCH_BHINT);  in jz4780_bch_disable()
86 	writel(BCH_BHCR_BCHE, bch->base + BCH_BHCCR);  in jz4780_bch_disable()
98 	while (size32--)  in jz4780_bch_write_data()
99 		writel(*src32++, bch->base + BCH_BHDR);  in jz4780_bch_write_data()
102 	while (size8--)  in jz4780_bch_write_data()
103 		writeb(*src8++, bch->base + BCH_BHDR);  in jz4780_bch_write_data()
116 	while (size32--) {  in jz4780_bch_read_parity()
117 		*dest32++ = readl(bch->base + BCH_BHPAR0 + offset);  in jz4780_bch_read_parity()
122 	val = readl(bch->base + BCH_BHPAR0 + offset);  in jz4780_bch_read_parity()
148 	ret = readl_poll_timeout(bch->base + BCH_BHINT, reg,  in jz4780_bch_wait_complete()
156 	writel(reg, bch->base + BCH_BHINT);  in jz4780_bch_wait_complete()
166 	mutex_lock(&bch->lock);  in jz4780_calculate()
169 	jz4780_bch_write_data(bch, buf, params->size);  in jz4780_calculate()
172 		jz4780_bch_read_parity(bch, ecc_code, params->bytes);  in jz4780_calculate()
174 		dev_err(bch->dev, "timed out while calculating ECC\n");  in jz4780_calculate()
175 		ret = -ETIMEDOUT;  in jz4780_calculate()
179 	mutex_unlock(&bch->lock);  in jz4780_calculate()
190 	mutex_lock(&bch->lock);  in jz4780_correct()
193 	jz4780_bch_write_data(bch, buf, params->size);  in jz4780_correct()
194 	jz4780_bch_write_data(bch, ecc_code, params->bytes);  in jz4780_correct()
197 		dev_err(bch->dev, "timed out while correcting data\n");  in jz4780_correct()
198 		ret = -ETIMEDOUT;  in jz4780_correct()
199 		goto out;  in jz4780_correct()
203 		dev_warn(bch->dev, "uncorrectable ECC error\n");  in jz4780_correct()
204 		ret = -EBADMSG;  in jz4780_correct()
205 		goto out;  in jz4780_correct()
214 			reg = readl(bch->base + BCH_BHERR0 + (i * 4));  in jz4780_correct()
226 out:  in jz4780_correct()
228 	mutex_unlock(&bch->lock);  in jz4780_correct()
242 	clk_set_rate(bch->clk, BCH_CLK_RATE);  in jz4780_bch_probe()
254 	{ .compatible = "ingenic,jz4780-bch", .data = &jz4780_bch_ops },
262 		.name	= "jz4780-bch",
268 MODULE_AUTHOR("Alex Smith <alex@alex-smith.me.uk>");