Merge git://git.denx.de/u-boot-sh

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

diff --git a/drivers/mmc/sandbox_mmc.c b/drivers/mmc/sandbox_mmc.c
index f4646a824fa148e683cb258cf314e84d8dc2a946..e86ea8fe096878376c43ccc47ab06ba44075e960 100644 (file)
--- a/drivers/mmc/sandbox_mmc.c
+++ b/drivers/mmc/sandbox_mmc.c
@@ -1,25 +1,152 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * 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 <log.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:
+               memset(cmd->response, '\0', sizeof(cmd->response));
+               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 */
+               cmd->response[2] = 0;
+               cmd->response[3] = 0;
+               break;
+       case SD_CMD_SWITCH_FUNC: {
+               if (!data)
+                       break;
+               u32 *resp = (u32 *)data->dest;
+               resp[3] = 0;
+               resp[7] = cpu_to_be32(SD_HIGHSPEED_BUSY);
+               if ((cmd->cmdarg & 0xF) == UHS_SDR12_BUS_SPEED)
+                       resp[4] = (cmd->cmdarg & 0xF) << 24;
+               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(warm_mmc_sandbox) = {
+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),
 };