forked from mirrors/linux
mmc: sdhci-xenon: Add Marvell Xenon SDHC core functionality
Add Xenon eMMC/SD/SDIO host controller core functionality. Add Xenon specific initialization process. Add Xenon specific mmc_host_ops APIs. Add Xenon specific register definitions. Add CONFIG_MMC_SDHCI_XENON support in drivers/mmc/host/Kconfig. Marvell Xenon SDHC conforms to SD Physical Layer Specification Version 3.01 and is designed according to the guidelines provided in the SD Host Controller Standard Specification Version 3.00. Signed-off-by: Hu Ziji <huziji@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Hu Ziji
Ulf Hansson
parent
66c659cf5c
commit
3a3748dba8
4 changed files with 612 additions and 0 deletions
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@ -853,3 +853,11 @@ config MMC_SDHCI_BRCMSTB
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Broadcom STB SoCs.
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If unsure, say Y.
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config MMC_SDHCI_XENON
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tristate "Marvell Xenon eMMC/SD/SDIO SDHCI driver"
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depends on MMC_SDHCI_PLTFM
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help
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This selects Marvell Xenon eMMC/SD/SDIO SDHCI.
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If you have a controller with this interface, say Y or M here.
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If unsure, say N.
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@ -86,3 +86,6 @@ obj-$(CONFIG_MMC_SDHCI_BRCMSTB) += sdhci-brcmstb.o
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ifeq ($(CONFIG_CB710_DEBUG),y)
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CFLAGS-cb710-mmc += -DDEBUG
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endif
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obj-$(CONFIG_MMC_SDHCI_XENON) += sdhci-xenon-driver.o
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sdhci-xenon-driver-y += sdhci-xenon.o
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541
drivers/mmc/host/sdhci-xenon.c
Normal file
541
drivers/mmc/host/sdhci-xenon.c
Normal file
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@ -0,0 +1,541 @@
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/*
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* Driver for Marvell Xenon SDHC as a platform device
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*
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* Copyright (C) 2016 Marvell, All Rights Reserved.
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*
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* Author: Hu Ziji <huziji@marvell.com>
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* Date: 2016-8-24
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* Inspired by Jisheng Zhang <jszhang@marvell.com>
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* Special thanks to Video BG4 project team.
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*/
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#include <linux/delay.h>
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#include <linux/ktime.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include "sdhci-pltfm.h"
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#include "sdhci-xenon.h"
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static int xenon_enable_internal_clk(struct sdhci_host *host)
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{
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u32 reg;
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ktime_t timeout;
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reg = sdhci_readl(host, SDHCI_CLOCK_CONTROL);
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reg |= SDHCI_CLOCK_INT_EN;
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sdhci_writel(host, reg, SDHCI_CLOCK_CONTROL);
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/* Wait max 20 ms */
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timeout = ktime_add_ms(ktime_get(), 20);
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while (!((reg = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
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& SDHCI_CLOCK_INT_STABLE)) {
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if (ktime_after(ktime_get(), timeout)) {
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dev_err(mmc_dev(host->mmc), "Internal clock never stabilised.\n");
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return -ETIMEDOUT;
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}
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usleep_range(900, 1100);
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}
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return 0;
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}
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/* Set SDCLK-off-while-idle */
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static void xenon_set_sdclk_off_idle(struct sdhci_host *host,
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unsigned char sdhc_id, bool enable)
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{
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u32 reg;
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u32 mask;
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reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
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/* Get the bit shift basing on the SDHC index */
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mask = (0x1 << (XENON_SDCLK_IDLEOFF_ENABLE_SHIFT + sdhc_id));
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if (enable)
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reg |= mask;
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else
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reg &= ~mask;
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sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
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}
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/* Enable/Disable the Auto Clock Gating function */
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static void xenon_set_acg(struct sdhci_host *host, bool enable)
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{
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u32 reg;
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reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
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if (enable)
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reg &= ~XENON_AUTO_CLKGATE_DISABLE_MASK;
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else
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reg |= XENON_AUTO_CLKGATE_DISABLE_MASK;
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sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
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}
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/* Enable this SDHC */
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static void xenon_enable_sdhc(struct sdhci_host *host,
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unsigned char sdhc_id)
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{
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u32 reg;
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reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
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reg |= (BIT(sdhc_id) << XENON_SLOT_ENABLE_SHIFT);
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sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
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host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
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/*
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* Force to clear BUS_TEST to
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* skip bus_test_pre and bus_test_post
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*/
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host->mmc->caps &= ~MMC_CAP_BUS_WIDTH_TEST;
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}
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/* Disable this SDHC */
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static void xenon_disable_sdhc(struct sdhci_host *host,
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unsigned char sdhc_id)
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{
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u32 reg;
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reg = sdhci_readl(host, XENON_SYS_OP_CTRL);
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reg &= ~(BIT(sdhc_id) << XENON_SLOT_ENABLE_SHIFT);
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sdhci_writel(host, reg, XENON_SYS_OP_CTRL);
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}
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/* Enable Parallel Transfer Mode */
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static void xenon_enable_sdhc_parallel_tran(struct sdhci_host *host,
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unsigned char sdhc_id)
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{
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u32 reg;
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reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
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reg |= BIT(sdhc_id);
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sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
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}
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/* Mask command conflict error */
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static void xenon_mask_cmd_conflict_err(struct sdhci_host *host)
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{
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u32 reg;
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reg = sdhci_readl(host, XENON_SYS_EXT_OP_CTRL);
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reg |= XENON_MASK_CMD_CONFLICT_ERR;
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sdhci_writel(host, reg, XENON_SYS_EXT_OP_CTRL);
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}
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static void xenon_retune_setup(struct sdhci_host *host)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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u32 reg;
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/* Disable the Re-Tuning Request functionality */
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reg = sdhci_readl(host, XENON_SLOT_RETUNING_REQ_CTRL);
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reg &= ~XENON_RETUNING_COMPATIBLE;
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sdhci_writel(host, reg, XENON_SLOT_RETUNING_REQ_CTRL);
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/* Disable the Re-tuning Interrupt */
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reg = sdhci_readl(host, SDHCI_SIGNAL_ENABLE);
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reg &= ~SDHCI_INT_RETUNE;
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sdhci_writel(host, reg, SDHCI_SIGNAL_ENABLE);
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reg = sdhci_readl(host, SDHCI_INT_ENABLE);
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reg &= ~SDHCI_INT_RETUNE;
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sdhci_writel(host, reg, SDHCI_INT_ENABLE);
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/* Force to use Tuning Mode 1 */
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host->tuning_mode = SDHCI_TUNING_MODE_1;
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/* Set re-tuning period */
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host->tuning_count = 1 << (priv->tuning_count - 1);
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}
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/*
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* Operations inside struct sdhci_ops
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*/
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/* Recover the Register Setting cleared during SOFTWARE_RESET_ALL */
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static void xenon_reset_exit(struct sdhci_host *host,
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unsigned char sdhc_id, u8 mask)
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{
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/* Only SOFTWARE RESET ALL will clear the register setting */
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if (!(mask & SDHCI_RESET_ALL))
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return;
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/* Disable tuning request and auto-retuning again */
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xenon_retune_setup(host);
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xenon_set_acg(host, true);
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xenon_set_sdclk_off_idle(host, sdhc_id, false);
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xenon_mask_cmd_conflict_err(host);
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}
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static void xenon_reset(struct sdhci_host *host, u8 mask)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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sdhci_reset(host, mask);
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xenon_reset_exit(host, priv->sdhc_id, mask);
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}
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/*
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* Xenon defines different values for HS200 and HS400
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* in Host_Control_2
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*/
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static void xenon_set_uhs_signaling(struct sdhci_host *host,
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unsigned int timing)
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{
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u16 ctrl_2;
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ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
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/* Select Bus Speed Mode for host */
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ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
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if (timing == MMC_TIMING_MMC_HS200)
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ctrl_2 |= XENON_CTRL_HS200;
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else if (timing == MMC_TIMING_UHS_SDR104)
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ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
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else if (timing == MMC_TIMING_UHS_SDR12)
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ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
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else if (timing == MMC_TIMING_UHS_SDR25)
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ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
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else if (timing == MMC_TIMING_UHS_SDR50)
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ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
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else if ((timing == MMC_TIMING_UHS_DDR50) ||
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(timing == MMC_TIMING_MMC_DDR52))
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ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
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else if (timing == MMC_TIMING_MMC_HS400)
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ctrl_2 |= XENON_CTRL_HS400;
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sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
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}
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static const struct sdhci_ops sdhci_xenon_ops = {
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.set_clock = sdhci_set_clock,
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.set_bus_width = sdhci_set_bus_width,
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.reset = xenon_reset,
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.set_uhs_signaling = xenon_set_uhs_signaling,
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.get_max_clock = sdhci_pltfm_clk_get_max_clock,
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};
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static const struct sdhci_pltfm_data sdhci_xenon_pdata = {
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.ops = &sdhci_xenon_ops,
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.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
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SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
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SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
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};
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/*
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* Xenon Specific Operations in mmc_host_ops
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*/
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static void xenon_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
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{
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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u32 reg;
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/*
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* HS400/HS200/eMMC HS doesn't have Preset Value register.
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* However, sdhci_set_ios will read HS400/HS200 Preset register.
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* Disable Preset Value register for HS400/HS200.
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* eMMC HS with preset_enabled set will trigger a bug in
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* get_preset_value().
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*/
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if ((ios->timing == MMC_TIMING_MMC_HS400) ||
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(ios->timing == MMC_TIMING_MMC_HS200) ||
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(ios->timing == MMC_TIMING_MMC_HS)) {
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host->preset_enabled = false;
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host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
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host->flags &= ~SDHCI_PV_ENABLED;
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reg = sdhci_readw(host, SDHCI_HOST_CONTROL2);
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reg &= ~SDHCI_CTRL_PRESET_VAL_ENABLE;
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sdhci_writew(host, reg, SDHCI_HOST_CONTROL2);
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} else {
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host->quirks2 &= ~SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
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}
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sdhci_set_ios(mmc, ios);
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if (host->clock > XENON_DEFAULT_SDCLK_FREQ)
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xenon_set_sdclk_off_idle(host, priv->sdhc_id, true);
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}
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static int xenon_start_signal_voltage_switch(struct mmc_host *mmc,
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struct mmc_ios *ios)
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{
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struct sdhci_host *host = mmc_priv(mmc);
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/*
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* Before SD/SDIO set signal voltage, SD bus clock should be
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* disabled. However, sdhci_set_clock will also disable the Internal
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* clock in mmc_set_signal_voltage().
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* If Internal clock is disabled, the 3.3V/1.8V bit can not be updated.
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* Thus here manually enable internal clock.
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*
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* After switch completes, it is unnecessary to disable internal clock,
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* since keeping internal clock active obeys SD spec.
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*/
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xenon_enable_internal_clk(host);
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/*
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* If Vqmmc is fixed on platform, vqmmc regulator should be unavailable.
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* Thus SDHCI_CTRL_VDD_180 bit might not work then.
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* Skip the standard voltage switch to avoid any issue.
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*/
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if (PTR_ERR(mmc->supply.vqmmc) == -ENODEV)
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return 0;
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return sdhci_start_signal_voltage_switch(mmc, ios);
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}
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/*
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* Update card type.
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* priv->init_card_type will be used in PHY timing adjustment.
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*/
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static void xenon_init_card(struct mmc_host *mmc, struct mmc_card *card)
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{
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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/* Update card type*/
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priv->init_card_type = card->type;
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}
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static int xenon_execute_tuning(struct mmc_host *mmc, u32 opcode)
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{
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struct sdhci_host *host = mmc_priv(mmc);
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if (host->timing == MMC_TIMING_UHS_DDR50)
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return 0;
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/*
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* Currently force Xenon driver back to support mode 1 only,
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* even though Xenon might claim to support mode 2 or mode 3.
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* It requires more time to test mode 2/mode 3 on more platforms.
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*/
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if (host->tuning_mode != SDHCI_TUNING_MODE_1)
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xenon_retune_setup(host);
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return sdhci_execute_tuning(mmc, opcode);
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}
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static void xenon_enable_sdio_irq(struct mmc_host *mmc, int enable)
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{
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struct sdhci_host *host = mmc_priv(mmc);
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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u32 reg;
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u8 sdhc_id = priv->sdhc_id;
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sdhci_enable_sdio_irq(mmc, enable);
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if (enable) {
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/*
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* Set SDIO Card Inserted indication
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* to enable detecting SDIO async irq.
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*/
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reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
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reg |= (1 << (sdhc_id + XENON_SLOT_TYPE_SDIO_SHIFT));
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sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
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} else {
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/* Clear SDIO Card Inserted indication */
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reg = sdhci_readl(host, XENON_SYS_CFG_INFO);
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reg &= ~(1 << (sdhc_id + XENON_SLOT_TYPE_SDIO_SHIFT));
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sdhci_writel(host, reg, XENON_SYS_CFG_INFO);
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}
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}
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static void xenon_replace_mmc_host_ops(struct sdhci_host *host)
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{
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host->mmc_host_ops.set_ios = xenon_set_ios;
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host->mmc_host_ops.start_signal_voltage_switch =
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xenon_start_signal_voltage_switch;
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host->mmc_host_ops.init_card = xenon_init_card;
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host->mmc_host_ops.execute_tuning = xenon_execute_tuning;
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host->mmc_host_ops.enable_sdio_irq = xenon_enable_sdio_irq;
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}
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/*
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* Parse Xenon specific DT properties:
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* sdhc-id: the index of current SDHC.
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* Refer to XENON_SYS_CFG_INFO register
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* tun-count: the interval between re-tuning
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*/
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static int xenon_probe_dt(struct platform_device *pdev)
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{
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struct device_node *np = pdev->dev.of_node;
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struct sdhci_host *host = platform_get_drvdata(pdev);
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struct mmc_host *mmc = host->mmc;
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
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u32 sdhc_id, nr_sdhc;
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u32 tuning_count;
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/* Disable HS200 on Armada AP806 */
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if (of_device_is_compatible(np, "marvell,armada-ap806-sdhci"))
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host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
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sdhc_id = 0x0;
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if (!of_property_read_u32(np, "marvell,xenon-sdhc-id", &sdhc_id)) {
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nr_sdhc = sdhci_readl(host, XENON_SYS_CFG_INFO);
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nr_sdhc &= XENON_NR_SUPPORTED_SLOT_MASK;
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if (unlikely(sdhc_id > nr_sdhc)) {
|
||||
dev_err(mmc_dev(mmc), "SDHC Index %d exceeds Number of SDHCs %d\n",
|
||||
sdhc_id, nr_sdhc);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
priv->sdhc_id = sdhc_id;
|
||||
|
||||
tuning_count = XENON_DEF_TUNING_COUNT;
|
||||
if (!of_property_read_u32(np, "marvell,xenon-tun-count",
|
||||
&tuning_count)) {
|
||||
if (unlikely(tuning_count >= XENON_TMR_RETUN_NO_PRESENT)) {
|
||||
dev_err(mmc_dev(mmc), "Wrong Re-tuning Count. Set default value %d\n",
|
||||
XENON_DEF_TUNING_COUNT);
|
||||
tuning_count = XENON_DEF_TUNING_COUNT;
|
||||
}
|
||||
}
|
||||
priv->tuning_count = tuning_count;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int xenon_sdhc_prepare(struct sdhci_host *host)
|
||||
{
|
||||
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
||||
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
|
||||
u8 sdhc_id = priv->sdhc_id;
|
||||
|
||||
/* Enable SDHC */
|
||||
xenon_enable_sdhc(host, sdhc_id);
|
||||
|
||||
/* Enable ACG */
|
||||
xenon_set_acg(host, true);
|
||||
|
||||
/* Enable Parallel Transfer Mode */
|
||||
xenon_enable_sdhc_parallel_tran(host, sdhc_id);
|
||||
|
||||
/* Disable SDCLK-Off-While-Idle before card init */
|
||||
xenon_set_sdclk_off_idle(host, sdhc_id, false);
|
||||
|
||||
xenon_mask_cmd_conflict_err(host);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void xenon_sdhc_unprepare(struct sdhci_host *host)
|
||||
{
|
||||
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
||||
struct xenon_priv *priv = sdhci_pltfm_priv(pltfm_host);
|
||||
u8 sdhc_id = priv->sdhc_id;
|
||||
|
||||
/* disable SDHC */
|
||||
xenon_disable_sdhc(host, sdhc_id);
|
||||
}
|
||||
|
||||
static int xenon_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct sdhci_pltfm_host *pltfm_host;
|
||||
struct sdhci_host *host;
|
||||
struct xenon_priv *priv;
|
||||
int err;
|
||||
|
||||
host = sdhci_pltfm_init(pdev, &sdhci_xenon_pdata,
|
||||
sizeof(struct xenon_priv));
|
||||
if (IS_ERR(host))
|
||||
return PTR_ERR(host);
|
||||
|
||||
pltfm_host = sdhci_priv(host);
|
||||
priv = sdhci_pltfm_priv(pltfm_host);
|
||||
|
||||
/*
|
||||
* Link Xenon specific mmc_host_ops function,
|
||||
* to replace standard ones in sdhci_ops.
|
||||
*/
|
||||
xenon_replace_mmc_host_ops(host);
|
||||
|
||||
pltfm_host->clk = devm_clk_get(&pdev->dev, "core");
|
||||
if (IS_ERR(pltfm_host->clk)) {
|
||||
err = PTR_ERR(pltfm_host->clk);
|
||||
dev_err(&pdev->dev, "Failed to setup input clk: %d\n", err);
|
||||
goto free_pltfm;
|
||||
}
|
||||
err = clk_prepare_enable(pltfm_host->clk);
|
||||
if (err)
|
||||
goto free_pltfm;
|
||||
|
||||
err = mmc_of_parse(host->mmc);
|
||||
if (err)
|
||||
goto err_clk;
|
||||
|
||||
sdhci_get_of_property(pdev);
|
||||
|
||||
xenon_set_acg(host, false);
|
||||
|
||||
/* Xenon specific dt parse */
|
||||
err = xenon_probe_dt(pdev);
|
||||
if (err)
|
||||
goto err_clk;
|
||||
|
||||
err = xenon_sdhc_prepare(host);
|
||||
if (err)
|
||||
goto err_clk;
|
||||
|
||||
err = sdhci_add_host(host);
|
||||
if (err)
|
||||
goto remove_sdhc;
|
||||
|
||||
return 0;
|
||||
|
||||
remove_sdhc:
|
||||
xenon_sdhc_unprepare(host);
|
||||
err_clk:
|
||||
clk_disable_unprepare(pltfm_host->clk);
|
||||
free_pltfm:
|
||||
sdhci_pltfm_free(pdev);
|
||||
return err;
|
||||
}
|
||||
|
||||
static int xenon_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct sdhci_host *host = platform_get_drvdata(pdev);
|
||||
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
||||
|
||||
xenon_sdhc_unprepare(host);
|
||||
|
||||
sdhci_remove_host(host, 0);
|
||||
|
||||
clk_disable_unprepare(pltfm_host->clk);
|
||||
|
||||
sdhci_pltfm_free(pdev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id sdhci_xenon_dt_ids[] = {
|
||||
{ .compatible = "marvell,armada-ap806-sdhci",},
|
||||
{ .compatible = "marvell,armada-cp110-sdhci",},
|
||||
{ .compatible = "marvell,armada-3700-sdhci",},
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, sdhci_xenon_dt_ids);
|
||||
|
||||
static struct platform_driver sdhci_xenon_driver = {
|
||||
.driver = {
|
||||
.name = "xenon-sdhci",
|
||||
.of_match_table = sdhci_xenon_dt_ids,
|
||||
.pm = &sdhci_pltfm_pmops,
|
||||
},
|
||||
.probe = xenon_probe,
|
||||
.remove = xenon_remove,
|
||||
};
|
||||
|
||||
module_platform_driver(sdhci_xenon_driver);
|
||||
|
||||
MODULE_DESCRIPTION("SDHCI platform driver for Marvell Xenon SDHC");
|
||||
MODULE_AUTHOR("Hu Ziji <huziji@marvell.com>");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
60
drivers/mmc/host/sdhci-xenon.h
Normal file
60
drivers/mmc/host/sdhci-xenon.h
Normal file
|
|
@ -0,0 +1,60 @@
|
|||
/*
|
||||
* Copyright (C) 2016 Marvell, All Rights Reserved.
|
||||
*
|
||||
* Author: Hu Ziji <huziji@marvell.com>
|
||||
* Date: 2016-8-24
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as
|
||||
* published by the Free Software Foundation version 2.
|
||||
*/
|
||||
#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_RETUNING_REQ_CTRL 0x0144
|
||||
/* retuning compatible */
|
||||
#define XENON_RETUNING_COMPATIBLE 0x1
|
||||
|
||||
/* Tuning Parameter */
|
||||
#define XENON_TMR_RETUN_NO_PRESENT 0xF
|
||||
#define XENON_DEF_TUNING_COUNT 0x9
|
||||
|
||||
#define XENON_DEFAULT_SDCLK_FREQ 400000
|
||||
|
||||
/* Xenon specific Mode Select value */
|
||||
#define XENON_CTRL_HS200 0x5
|
||||
#define XENON_CTRL_HS400 0x6
|
||||
|
||||
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;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue