summaryrefslogtreecommitdiffstats
path: root/drivers/mmc/host/sdhci-xenon.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/mmc/host/sdhci-xenon.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-xenon.h')
-rw-r--r--drivers/mmc/host/sdhci-xenon.h108
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-xenon.h b/drivers/mmc/host/sdhci-xenon.h
new file mode 100644
index 0000000000..3e9c6c908a
--- /dev/null
+++ b/drivers/mmc/host/sdhci-xenon.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2016 Marvell, All Rights Reserved.
+ *
+ * Author: Hu Ziji <huziji@marvell.com>
+ * Date: 2016-8-24
+ */
+#ifndef SDHCI_XENON_H_
+#define SDHCI_XENON_H_
+
+/* Register Offset of Xenon SDHC self-defined register */
+#define XENON_SYS_CFG_INFO 0x0104
+#define XENON_SLOT_TYPE_SDIO_SHIFT 24
+#define XENON_NR_SUPPORTED_SLOT_MASK 0x7
+
+#define XENON_SYS_OP_CTRL 0x0108
+#define XENON_AUTO_CLKGATE_DISABLE_MASK BIT(20)
+#define XENON_SDCLK_IDLEOFF_ENABLE_SHIFT 8
+#define XENON_SLOT_ENABLE_SHIFT 0
+
+#define XENON_SYS_EXT_OP_CTRL 0x010C
+#define XENON_MASK_CMD_CONFLICT_ERR BIT(8)
+
+#define XENON_SLOT_OP_STATUS_CTRL 0x0128
+#define XENON_TUN_CONSECUTIVE_TIMES_SHIFT 16
+#define XENON_TUN_CONSECUTIVE_TIMES_MASK 0x7
+#define XENON_TUN_CONSECUTIVE_TIMES 0x4
+#define XENON_TUNING_STEP_SHIFT 12
+#define XENON_TUNING_STEP_MASK 0xF
+#define XENON_TUNING_STEP_DIVIDER BIT(6)
+
+#define XENON_SLOT_EMMC_CTRL 0x0130
+#define XENON_ENABLE_RESP_STROBE BIT(25)
+#define XENON_ENABLE_DATA_STROBE BIT(24)
+
+#define XENON_SLOT_RETUNING_REQ_CTRL 0x0144
+/* retuning compatible */
+#define XENON_RETUNING_COMPATIBLE 0x1
+
+#define XENON_SLOT_EXT_PRESENT_STATE 0x014C
+#define XENON_DLL_LOCK_STATE 0x1
+
+#define XENON_SLOT_DLL_CUR_DLY_VAL 0x0150
+
+/* Tuning Parameter */
+#define XENON_TMR_RETUN_NO_PRESENT 0xF
+#define XENON_DEF_TUNING_COUNT 0x9
+
+#define XENON_DEFAULT_SDCLK_FREQ 400000
+#define XENON_LOWEST_SDCLK_FREQ 100000
+
+/* Xenon specific Mode Select value */
+#define XENON_CTRL_HS200 0x5
+#define XENON_CTRL_HS400 0x6
+
+enum xenon_variant {
+ XENON_A3700,
+ XENON_AP806,
+ XENON_AP807,
+ XENON_CP110
+};
+
+struct xenon_priv {
+ unsigned char tuning_count;
+ /* idx of SDHC */
+ u8 sdhc_id;
+
+ /*
+ * eMMC/SD/SDIO require different register settings.
+ * Xenon driver has to recognize card type
+ * before mmc_host->card is not available.
+ * This field records the card type during init.
+ * It is updated in xenon_init_card().
+ *
+ * It is only valid during initialization after it is updated.
+ * Do not access this variable in normal transfers after
+ * initialization completes.
+ */
+ unsigned int init_card_type;
+
+ /*
+ * The bus_width, timing, and clock fields in below
+ * record the current ios setting of Xenon SDHC.
+ * Driver will adjust PHY setting if any change to
+ * ios affects PHY timing.
+ */
+ unsigned char bus_width;
+ unsigned char timing;
+ unsigned int clock;
+ struct clk *axi_clk;
+
+ int phy_type;
+ /*
+ * Contains board-specific PHY parameters
+ * passed from device tree.
+ */
+ void *phy_params;
+ struct xenon_emmc_phy_regs *emmc_phy_regs;
+ bool restore_needed;
+ enum xenon_variant hw_version;
+};
+
+int xenon_phy_adj(struct sdhci_host *host, struct mmc_ios *ios);
+int xenon_phy_parse_params(struct device *dev,
+ struct sdhci_host *host);
+void xenon_soc_pad_ctrl(struct sdhci_host *host,
+ unsigned char signal_voltage);
+#endif