1 // SPDX-License-Identifier: GPL-2.0+
493 	struct meson_msr *priv = clk_msr_id->priv;  in meson_measure_id()
501 	regmap_write(priv->regmap, MSR_CLK_REG0, 0);  in meson_measure_id()
504 	regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_DURATION,  in meson_measure_id()
505 			   FIELD_PREP(MSR_DURATION, duration - 1));  in meson_measure_id()
508 	regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_CLK_SRC,  in meson_measure_id()
509 			   FIELD_PREP(MSR_CLK_SRC, clk_msr_id->id));  in meson_measure_id()
512 	regmap_update_bits(priv->regmap, MSR_CLK_REG0,  in meson_measure_id()
516 	ret = regmap_read_poll_timeout(priv->regmap, MSR_CLK_REG0,  in meson_measure_id()
524 	regmap_update_bits(priv->regmap, MSR_CLK_REG0, MSR_ENABLE, 0);  in meson_measure_id()
527 	regmap_read(priv->regmap, MSR_CLK_REG2, &val);  in meson_measure_id()
532 		return -EINVAL;  in meson_measure_id()
550 			duration -= DIV_STEP;  in meson_measure_best_id()
551 	} while (duration >= DIV_MIN && ret == -EINVAL);  in meson_measure_best_id()
558 	struct meson_msr_id *clk_msr_id = s->private;  in clk_msr_show()
566 	seq_printf(s, "%d\t+/-%dHz\n", val, precision);  in clk_msr_show()
574 	struct meson_msr_id *msr_table = s->private;  in clk_msr_summary_show()
578 	seq_puts(s, "  clock                     rate    precision\n");  in clk_msr_summary_show()
579 	seq_puts(s, "---------------------------------------------\n");  in clk_msr_summary_show()
589 		seq_printf(s, " %-20s %10d    +/-%dHz\n",  in clk_msr_summary_show()
613 	priv = devm_kzalloc(&pdev->dev, sizeof(struct meson_msr),  in meson_msr_probe()
616 		return -ENOMEM;  in meson_msr_probe()
618 	match_data = device_get_match_data(&pdev->dev);  in meson_msr_probe()
620 		dev_err(&pdev->dev, "failed to get match data\n");  in meson_msr_probe()
621 		return -ENODEV;  in meson_msr_probe()
624 	memcpy(priv->msr_table, match_data, sizeof(priv->msr_table));  in meson_msr_probe()
627 	base = devm_ioremap_resource(&pdev->dev, res);  in meson_msr_probe()
629 		dev_err(&pdev->dev, "io resource mapping failed\n");  in meson_msr_probe()
633 	priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,  in meson_msr_probe()
635 	if (IS_ERR(priv->regmap))  in meson_msr_probe()
636 		return PTR_ERR(priv->regmap);  in meson_msr_probe()
638 	root = debugfs_create_dir("meson-clk-msr", NULL);  in meson_msr_probe()
642 			    priv->msr_table, &clk_msr_summary_fops);  in meson_msr_probe()
645 		if (!priv->msr_table[i].name)  in meson_msr_probe()
648 		priv->msr_table[i].priv = priv;  in meson_msr_probe()
650 		debugfs_create_file(priv->msr_table[i].name, 0444, clks,  in meson_msr_probe()
651 				    &priv->msr_table[i], &clk_msr_fops);  in meson_msr_probe()
659 		.compatible = "amlogic,meson-gx-clk-measure",
663 		.compatible = "amlogic,meson8-clk-measure",
667 		.compatible = "amlogic,meson8b-clk-measure",
671 		.compatible = "amlogic,meson-axg-clk-measure",
675 		.compatible = "amlogic,meson-g12a-clk-measure",
679 		.compatible = "amlogic,meson-sm1-clk-measure",