[people/ms/u-boot.git] / drivers / mmc / sandbox_mmc.c

/*
 * Copyright (c) 2015 Google, Inc
 * Written by Simon Glass <sjg@chromium.org>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <errno.h>
#include <fdtdec.h>
#include <mmc.h>
#include <asm/test.h>

DECLARE_GLOBAL_DATA_PTR;

struct sandbox_mmc_plat {
	struct mmc_config cfg;
	struct mmc mmc;
};

/**
 * sandbox_mmc_send_cmd() - Emulate SD commands
 *
 * This emulate an SD card version 2. Single-block reads result in zero data.
 * Multiple-block reads return a test string.
 */
static int sandbox_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
				struct mmc_data *data)
{
	switch (cmd->cmdidx) {
	case MMC_CMD_ALL_SEND_CID:
		break;
	case SD_CMD_SEND_RELATIVE_ADDR:
		cmd->response[0] = 0 << 16; /* mmc->rca */
	case MMC_CMD_GO_IDLE_STATE:
		break;
	case SD_CMD_SEND_IF_COND:
		cmd->response[0] = 0xaa;
		break;
	case MMC_CMD_SEND_STATUS:
		cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
		break;
	case MMC_CMD_SELECT_CARD:
		break;
	case MMC_CMD_SEND_CSD:
		cmd->response[0] = 0;
		cmd->response[1] = 10 << 16;	/* 1 << block_len */
		break;
	case SD_CMD_SWITCH_FUNC: {
		u32 *resp = (u32 *)data->dest;

		resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
		break;
	}
	case MMC_CMD_READ_SINGLE_BLOCK:
		memset(data->dest, '\0', data->blocksize);
		break;
	case MMC_CMD_READ_MULTIPLE_BLOCK:
		strcpy(data->dest, "this is a test");
		break;
	case MMC_CMD_STOP_TRANSMISSION:
		break;
	case SD_CMD_APP_SEND_OP_COND:
		cmd->response[0] = OCR_BUSY | OCR_HCS;
		cmd->response[1] = 0;
		cmd->response[2] = 0;
		break;
	case MMC_CMD_APP_CMD:
		break;
	case MMC_CMD_SET_BLOCKLEN:
		debug("block len %d\n", cmd->cmdarg);
		break;
	case SD_CMD_APP_SEND_SCR: {
		u32 *scr = (u32 *)data->dest;

		scr[0] = cpu_to_be32(2 << 24 | 1 << 15);  /* SD version 3 */
		break;
	}
	default:
		debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
		break;
	}

	return 0;
}

static int sandbox_mmc_set_ios(struct udevice *dev)
{
	return 0;
}

static int sandbox_mmc_get_cd(struct udevice *dev)
{
	return 1;
}

static const struct dm_mmc_ops sandbox_mmc_ops = {
	.send_cmd = sandbox_mmc_send_cmd,
	.set_ios = sandbox_mmc_set_ios,
	.get_cd = sandbox_mmc_get_cd,
};

int sandbox_mmc_probe(struct udevice *dev)
{
	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);

	return mmc_init(&plat->mmc);
}

int sandbox_mmc_bind(struct udevice *dev)
{
	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	struct mmc_config *cfg = &plat->cfg;

	cfg->name = dev->name;
	cfg->host_caps = MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_8BIT;
	cfg->voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
	cfg->f_min = 1000000;
	cfg->f_max = 52000000;
	cfg->b_max = U32_MAX;

	return mmc_bind(dev, &plat->mmc, cfg);
}

int sandbox_mmc_unbind(struct udevice *dev)
{
	mmc_unbind(dev);

	return 0;
}

static const struct udevice_id sandbox_mmc_ids[] = {
	{ .compatible = "sandbox,mmc" },
	{ }
};

U_BOOT_DRIVER(mmc_sandbox) = {
	.name		= "mmc_sandbox",
	.id		= UCLASS_MMC,
	.of_match	= sandbox_mmc_ids,
	.ops		= &sandbox_mmc_ops,
	.bind		= sandbox_mmc_bind,
	.unbind		= sandbox_mmc_unbind,
	.probe		= sandbox_mmc_probe,
	.platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
};
Commit	Line	Data
8e6cc461 SG	1	/*
	2	* Copyright (c) 2015 Google, Inc
	3	* Written by Simon Glass <sjg@chromium.org>
	4	*
	5	* SPDX-License-Identifier: GPL-2.0+
	6	*/
	7
	8	#include <common.h>
	9	#include <dm.h>
	10	#include <errno.h>
f376a3cb	11	#include <fdtdec.h>
8e6cc461 SG	12	#include <mmc.h>
	13	#include <asm/test.h>
	14
	15	DECLARE_GLOBAL_DATA_PTR;
	16
f376a3cb SG	17	struct sandbox_mmc_plat {
	18	struct mmc_config cfg;
	19	struct mmc mmc;
	20	};
	21
	22	/**
	23	* sandbox_mmc_send_cmd() - Emulate SD commands
	24	*
	25	* This emulate an SD card version 2. Single-block reads result in zero data.
	26	* Multiple-block reads return a test string.
	27	*/
9a46bd3f	28	static int sandbox_mmc_send_cmd(struct udevice dev, struct mmc_cmd cmd,
f376a3cb SG	29	struct mmc_data *data)
	30	{
	31	switch (cmd->cmdidx) {
	32	case MMC_CMD_ALL_SEND_CID:
	33	break;
	34	case SD_CMD_SEND_RELATIVE_ADDR:
	35	cmd->response[0] = 0 << 16; /* mmc->rca */
	36	case MMC_CMD_GO_IDLE_STATE:
	37	break;
	38	case SD_CMD_SEND_IF_COND:
	39	cmd->response[0] = 0xaa;
	40	break;
	41	case MMC_CMD_SEND_STATUS:
	42	cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
	43	break;
	44	case MMC_CMD_SELECT_CARD:
	45	break;
	46	case MMC_CMD_SEND_CSD:
	47	cmd->response[0] = 0;
	48	cmd->response[1] = 10 << 16; /* 1 << block_len */
	49	break;
	50	case SD_CMD_SWITCH_FUNC: {
	51	u32 resp = (u32 )data->dest;
	52
	53	resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
	54	break;
	55	}
	56	case MMC_CMD_READ_SINGLE_BLOCK:
	57	memset(data->dest, '\0', data->blocksize);
	58	break;
	59	case MMC_CMD_READ_MULTIPLE_BLOCK:
	60	strcpy(data->dest, "this is a test");
	61	break;
	62	case MMC_CMD_STOP_TRANSMISSION:
	63	break;
	64	case SD_CMD_APP_SEND_OP_COND:
	65	cmd->response[0] = OCR_BUSY \| OCR_HCS;
	66	cmd->response[1] = 0;
	67	cmd->response[2] = 0;
	68	break;
	69	case MMC_CMD_APP_CMD:
	70	break;
	71	case MMC_CMD_SET_BLOCKLEN:
	72	debug("block len %d\n", cmd->cmdarg);
	73	break;
	74	case SD_CMD_APP_SEND_SCR: {
	75	u32 scr = (u32 )data->dest;
	76
	77	scr[0] = cpu_to_be32(2 << 24 \| 1 << 15); /* SD version 3 */
	78	break;
	79	}
	80	default:
	81	debug("%s: Unknown command %d\n", __func__, cmd->cmdidx);
	82	break;
	83	}
	84
	85	return 0;
	86	}
	87
9a46bd3f	88	static int sandbox_mmc_set_ios(struct udevice *dev)
f376a3cb SG	89	{
	90	return 0;
	91	}
	92
9a46bd3f	93	static int sandbox_mmc_get_cd(struct udevice *dev)
f376a3cb SG	94	{
	95	return 1;
	96	}
	97
9a46bd3f	98	static const struct dm_mmc_ops sandbox_mmc_ops = {
f376a3cb SG	99	.send_cmd = sandbox_mmc_send_cmd,
f376a3cb SG	100	.set_ios = sandbox_mmc_set_ios,
9a46bd3f	101	.get_cd = sandbox_mmc_get_cd,
f376a3cb SG	102	};
	103
	104	int sandbox_mmc_probe(struct udevice *dev)
	105	{
	106	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	107
	108	return mmc_init(&plat->mmc);
	109	}
	110
	111	int sandbox_mmc_bind(struct udevice *dev)
	112	{
	113	struct sandbox_mmc_plat *plat = dev_get_platdata(dev);
	114	struct mmc_config *cfg = &plat->cfg;
f376a3cb SG	115
f376a3cb SG	116	cfg->name = dev->name;
f376a3cb SG	117	cfg->host_caps = MMC_MODE_HS_52MHz \| MMC_MODE_HS \| MMC_MODE_8BIT;
	118	cfg->voltages = MMC_VDD_165_195 \| MMC_VDD_32_33 \| MMC_VDD_33_34;
	119	cfg->f_min = 1000000;
	120	cfg->f_max = 52000000;
	121	cfg->b_max = U32_MAX;
	122
24f5aec3	123	return mmc_bind(dev, &plat->mmc, cfg);
f376a3cb SG	124	}
	125
	126	int sandbox_mmc_unbind(struct udevice *dev)
	127	{
	128	mmc_unbind(dev);
	129
	130	return 0;
	131	}
	132
8e6cc461 SG	133	static const struct udevice_id sandbox_mmc_ids[] = {
	134	{ .compatible = "sandbox,mmc" },
	135	{ }
	136	};
	137
f376a3cb	138	U_BOOT_DRIVER(mmc_sandbox) = {
8e6cc461 SG	139	.name = "mmc_sandbox",
	140	.id = UCLASS_MMC,
	141	.of_match = sandbox_mmc_ids,
9a46bd3f	142	.ops = &sandbox_mmc_ops,
f376a3cb SG	143	.bind = sandbox_mmc_bind,
	144	.unbind = sandbox_mmc_unbind,
	145	.probe = sandbox_mmc_probe,
	146	.platdata_auto_alloc_size = sizeof(struct sandbox_mmc_plat),
8e6cc461	147	};