1 // SPDX-License-Identifier: GPL-2.0
5  * This device driver implements MMIO TPM on SynQuacer Platform.
19  * irq = -1 means: no irq support
43 		while (len--)  in tpm_tis_synquacer_read_bytes()
44 			*result++ = ioread8(phy->iobase + addr);  in tpm_tis_synquacer_read_bytes()
47 		result[1] = ioread8(phy->iobase + addr + 1);  in tpm_tis_synquacer_read_bytes()
48 		result[0] = ioread8(phy->iobase + addr);  in tpm_tis_synquacer_read_bytes()
51 		result[3] = ioread8(phy->iobase + addr + 3);  in tpm_tis_synquacer_read_bytes()
52 		result[2] = ioread8(phy->iobase + addr + 2);  in tpm_tis_synquacer_read_bytes()
53 		result[1] = ioread8(phy->iobase + addr + 1);  in tpm_tis_synquacer_read_bytes()
54 		result[0] = ioread8(phy->iobase + addr);  in tpm_tis_synquacer_read_bytes()
68 		while (len--)  in tpm_tis_synquacer_write_bytes()
69 			iowrite8(*value++, phy->iobase + addr);  in tpm_tis_synquacer_write_bytes()
72 		return -EINVAL;  in tpm_tis_synquacer_write_bytes()
75 		 * Due to the limitation of SPI controller on SynQuacer,  in tpm_tis_synquacer_write_bytes()
76 		 * 16/32 bits access must be done in byte-wise and descending order.  in tpm_tis_synquacer_write_bytes()
78 		iowrite8(value[3], phy->iobase + addr + 3);  in tpm_tis_synquacer_write_bytes()
79 		iowrite8(value[2], phy->iobase + addr + 2);  in tpm_tis_synquacer_write_bytes()
80 		iowrite8(value[1], phy->iobase + addr + 1);  in tpm_tis_synquacer_write_bytes()
81 		iowrite8(value[0], phy->iobase + addr);  in tpm_tis_synquacer_write_bytes()
100 		return -ENOMEM;  in tpm_tis_synquacer_init()
102 	phy->iobase = devm_ioremap_resource(dev, &tpm_info->res);  in tpm_tis_synquacer_init()
103 	if (IS_ERR(phy->iobase))  in tpm_tis_synquacer_init()
104 		return PTR_ERR(phy->iobase);  in tpm_tis_synquacer_init()
106 	return tpm_tis_core_init(dev, &phy->priv, tpm_info->irq, &tpm_tcg_bw,  in tpm_tis_synquacer_init()
119 		dev_err(&pdev->dev, "no memory resource defined\n");  in tpm_tis_synquacer_probe()
120 		return -ENODEV;  in tpm_tis_synquacer_probe()
124 	tpm_info.irq = -1;  in tpm_tis_synquacer_probe()
126 	return tpm_tis_synquacer_init(&pdev->dev, &tpm_info);  in tpm_tis_synquacer_probe()
131 	struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);  in tpm_tis_synquacer_remove()
139 	{.compatible = "socionext,synquacer-tpm-mmio"},
166 MODULE_DESCRIPTION("TPM MMIO Driver for Socionext SynQuacer platform");