mmc: tegra: Add DM_MMC support to Tegra MMC driver
Convert the Tegra MMC driver to DM_MMC. Support for non-DM is removed to avoid ifdefs in the code. DM_MMC is now enabled for all Tegra builds. Cc: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Tom Warren <twarren@nvidia.com> (swarren, fixed some NULL pointer dereferences, removed extraneous changes, rebased on various other changes, removed non-DM support etc.) Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Tom Warren
parent
c0be77dbdb
commit
6a474db489
@ -1,11 +0,0 @@
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/*
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* Copyright (c) 2011, Google Inc. All rights reserved.
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _TEGRA_MMC_H_
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#define _TEGRA_MMC_H_
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void tegra_mmc_init(void);
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#endif /* _TEGRA_MMC_H_ */
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@ -27,6 +27,7 @@ config TEGRA_COMMON
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select DM_GPIO
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select DM_I2C
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select DM_KEYBOARD
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select DM_MMC
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select DM_PCI
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select DM_PCI_COMPAT
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select DM_PWM
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@ -6,7 +6,6 @@
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#include <common.h>
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#include <asm/arch/tegra.h>
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#include <asm/arch-tegra/mmc.h>
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DECLARE_GLOBAL_DATA_PTR;
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@ -29,10 +28,3 @@ int board_late_init(void)
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{
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return 0;
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}
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int board_mmc_init(bd_t *bd)
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{
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tegra_mmc_init();
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return 0;
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}
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@ -32,9 +32,6 @@
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#ifdef CONFIG_USB_EHCI_TEGRA
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#include <usb.h>
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#endif
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#ifdef CONFIG_TEGRA_MMC
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#include <asm/arch-tegra/mmc.h>
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#endif
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#include <asm/arch-tegra/xusb-padctl.h>
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#include <power/as3722.h>
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#include <i2c.h>
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@ -234,19 +231,6 @@ int board_late_init(void)
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return 0;
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}
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#if defined(CONFIG_TEGRA_MMC)
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/* this is a weak define that we are overriding */
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int board_mmc_init(bd_t *bd)
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{
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debug("%s called\n", __func__);
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debug("%s: init MMC\n", __func__);
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tegra_mmc_init();
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return 0;
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}
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#endif /* MMC */
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/*
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* In some SW environments, a memory carve-out exists to house a secure
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* monitor, a trusted OS, and/or various statically allocated media buffers.
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@ -2,7 +2,7 @@
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* (C) Copyright 2009 SAMSUNG Electronics
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* Minkyu Kang <mk7.kang@samsung.com>
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* Jaehoon Chung <jh80.chung@samsung.com>
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* Portions Copyright 2011-2015 NVIDIA Corporation
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* Portions Copyright 2011-2016 NVIDIA Corporation
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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@ -17,7 +17,6 @@
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#include <asm/arch/clock.h>
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#include <asm/arch-tegra/clk_rst.h>
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#endif
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#include <asm/arch-tegra/mmc.h>
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#include <asm/arch-tegra/tegra_mmc.h>
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#include <mmc.h>
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@ -34,9 +33,6 @@ DECLARE_GLOBAL_DATA_PTR;
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struct tegra_mmc_priv {
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struct tegra_mmc *reg;
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int id; /* device id/number, 0-3 */
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int enabled; /* 1 to enable, 0 to disable */
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int width; /* Bus Width, 1, 4 or 8 */
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#ifdef CONFIG_TEGRA186
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struct reset_ctl reset_ctl;
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struct clk clk;
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@ -49,14 +45,9 @@ struct tegra_mmc_priv {
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unsigned int version; /* SDHCI spec. version */
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unsigned int clock; /* Current clock (MHz) */
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struct mmc_config cfg; /* mmc configuration */
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struct mmc *mmc;
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};
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struct tegra_mmc_priv mmc_host[CONFIG_SYS_MMC_MAX_DEVICE];
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#if !CONFIG_IS_ENABLED(OF_CONTROL)
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#error "Please enable device tree support to use this driver"
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#endif
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static void tegra_mmc_set_power(struct tegra_mmc_priv *priv,
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unsigned short power)
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{
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@ -534,11 +525,11 @@ static void tegra_mmc_reset(struct tegra_mmc_priv *priv, struct mmc *mmc)
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tegra_mmc_pad_init(priv);
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}
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static int tegra_mmc_core_init(struct mmc *mmc)
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static int tegra_mmc_init(struct mmc *mmc)
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{
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struct tegra_mmc_priv *priv = mmc->priv;
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unsigned int mask;
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debug(" mmc_core_init called\n");
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debug(" tegra_mmc_init called\n");
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tegra_mmc_reset(priv, mmc);
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@ -594,59 +585,30 @@ static int tegra_mmc_getcd(struct mmc *mmc)
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static const struct mmc_ops tegra_mmc_ops = {
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.send_cmd = tegra_mmc_send_cmd,
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.set_ios = tegra_mmc_set_ios,
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.init = tegra_mmc_core_init,
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.init = tegra_mmc_init,
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.getcd = tegra_mmc_getcd,
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};
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static int do_mmc_init(int dev_index, bool removable)
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static int tegra_mmc_probe(struct udevice *dev)
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{
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struct tegra_mmc_priv *priv;
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struct mmc *mmc;
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct tegra_mmc_priv *priv = dev_get_priv(dev);
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int bus_width;
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#ifdef CONFIG_TEGRA186
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int ret;
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#endif
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/* DT should have been read & host config filled in */
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priv = &mmc_host[dev_index];
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if (!priv->enabled)
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return -1;
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debug(" do_mmc_init: index %d, bus width %d pwr_gpio %d cd_gpio %d\n",
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dev_index, priv->width, gpio_get_number(&priv->pwr_gpio),
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gpio_get_number(&priv->cd_gpio));
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priv->clock = 0;
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#ifdef CONFIG_TEGRA186
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ret = reset_assert(&priv->reset_ctl);
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if (ret)
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return ret;
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ret = clk_enable(&priv->clk);
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if (ret)
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return ret;
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ret = clk_set_rate(&priv->clk, 20000000);
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if (IS_ERR_VALUE(ret))
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return ret;
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ret = reset_deassert(&priv->reset_ctl);
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if (ret)
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return ret;
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#else
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clock_start_periph_pll(priv->mmc_id, CLOCK_ID_PERIPH, 20000000);
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#endif
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if (dm_gpio_is_valid(&priv->pwr_gpio))
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dm_gpio_set_value(&priv->pwr_gpio, 1);
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memset(&priv->cfg, 0, sizeof(priv->cfg));
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priv->cfg.name = "Tegra SD/MMC";
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priv->cfg.ops = &tegra_mmc_ops;
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bus_width = fdtdec_get_int(gd->fdt_blob, dev->of_offset, "bus-width",
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1);
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priv->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
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priv->cfg.host_caps = 0;
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if (priv->width == 8)
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if (bus_width == 8)
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priv->cfg.host_caps |= MMC_MODE_8BIT;
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if (priv->width >= 4)
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if (bus_width >= 4)
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priv->cfg.host_caps |= MMC_MODE_4BIT;
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priv->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
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@ -661,177 +623,76 @@ static int do_mmc_init(int dev_index, bool removable)
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priv->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
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mmc = mmc_create(&priv->cfg, priv);
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mmc->block_dev.removable = removable;
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if (mmc == NULL)
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return -1;
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return 0;
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}
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/**
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* Get the host address and peripheral ID for a node.
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*
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* @param blob fdt blob
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* @param node Device index (0-3)
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* @param priv Structure to fill in (reg, width, mmc_id)
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*/
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static int mmc_get_config(const void *blob, int node,
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struct tegra_mmc_priv *priv, bool *removablep)
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{
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debug("%s: node = %d\n", __func__, node);
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priv->enabled = fdtdec_get_is_enabled(blob, node);
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priv->reg = (struct tegra_mmc *)fdtdec_get_addr(blob, node, "reg");
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if ((fdt_addr_t)priv->reg == FDT_ADDR_T_NONE) {
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debug("%s: no sdmmc base reg info found\n", __func__);
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return -FDT_ERR_NOTFOUND;
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}
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priv->reg = (void *)dev_get_addr(dev);
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#ifdef CONFIG_TEGRA186
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{
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/*
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* FIXME: This variable should go away when the MMC device
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* actually is a udevice.
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*/
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struct udevice dev;
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int ret;
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dev.of_offset = node;
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ret = reset_get_by_name(&dev, "sdhci", &priv->reset_ctl);
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ret = reset_get_by_name(dev, "sdhci", &priv->reset_ctl);
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if (ret) {
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debug("reset_get_by_name() failed: %d\n", ret);
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return ret;
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}
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ret = clk_get_by_index(&dev, 0, &priv->clk);
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ret = clk_get_by_index(dev, 0, &priv->clk);
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if (ret) {
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debug("clk_get_by_index() failed: %d\n", ret);
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return ret;
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}
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}
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ret = reset_assert(&priv->reset_ctl);
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if (ret)
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return ret;
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ret = clk_enable(&priv->clk);
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if (ret)
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return ret;
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ret = clk_set_rate(&priv->clk, 20000000);
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if (IS_ERR_VALUE(ret))
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return ret;
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ret = reset_deassert(&priv->reset_ctl);
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if (ret)
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return ret;
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#else
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priv->mmc_id = clock_decode_periph_id(blob, node);
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priv->mmc_id = clock_decode_periph_id(gd->fdt_blob, dev->of_offset);
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if (priv->mmc_id == PERIPH_ID_NONE) {
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debug("%s: could not decode periph id\n", __func__);
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return -FDT_ERR_NOTFOUND;
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}
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#endif
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/*
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* NOTE: mmc->bus_width is determined by mmc.c dynamically.
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* TBD: Override it with this value?
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*/
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priv->width = fdtdec_get_int(blob, node, "bus-width", 0);
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if (!priv->width)
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debug("%s: no sdmmc width found\n", __func__);
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clock_start_periph_pll(priv->mmc_id, CLOCK_ID_PERIPH, 20000000);
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#endif
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/* These GPIOs are optional */
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gpio_request_by_name_nodev(blob, node, "cd-gpios", 0, &priv->cd_gpio,
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gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
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GPIOD_IS_IN);
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gpio_request_by_name_nodev(blob, node, "wp-gpios", 0, &priv->wp_gpio,
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gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
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GPIOD_IS_IN);
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gpio_request_by_name_nodev(blob, node, "power-gpios", 0,
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gpio_request_by_name(dev, "power-gpios", 0,
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&priv->pwr_gpio, GPIOD_IS_OUT);
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*removablep = !fdtdec_get_bool(blob, node, "non-removable");
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if (dm_gpio_is_valid(&priv->pwr_gpio))
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dm_gpio_set_value(&priv->pwr_gpio, 1);
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debug("%s: found controller at %p, width = %d, periph_id = %d\n",
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__func__, priv->reg, priv->width,
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#ifndef CONFIG_TEGRA186
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priv->mmc_id
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#else
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-1
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#endif
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);
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return 0;
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}
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/*
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* Process a list of nodes, adding them to our list of SDMMC ports.
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*
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* @param blob fdt blob
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* @param node_list list of nodes to process (any <=0 are ignored)
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* @param count number of nodes to process
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* @return 0 if ok, -1 on error
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*/
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static int process_nodes(const void *blob, int node_list[], int count)
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{
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struct tegra_mmc_priv *priv;
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bool removable;
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int i, node;
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debug("%s: count = %d\n", __func__, count);
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/* build mmc_host[] for each controller */
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for (i = 0; i < count; i++) {
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node = node_list[i];
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if (node <= 0)
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continue;
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priv = &mmc_host[i];
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priv->id = i;
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if (mmc_get_config(blob, node, priv, &removable)) {
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printf("%s: failed to decode dev %d\n", __func__, i);
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priv->mmc = mmc_create(&priv->cfg, priv);
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if (priv->mmc == NULL)
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return -1;
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}
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do_mmc_init(i, removable);
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}
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priv->mmc->dev = dev;
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upriv->mmc = priv->mmc;
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return 0;
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}
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void tegra_mmc_init(void)
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{
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int node_list[CONFIG_SYS_MMC_MAX_DEVICE], count;
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const void *blob = gd->fdt_blob;
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debug("%s entry\n", __func__);
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static const struct udevice_id tegra_mmc_ids[] = {
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{ .compatible = "nvidia,tegra20-sdhci" },
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{ .compatible = "nvidia,tegra30-sdhci" },
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{ .compatible = "nvidia,tegra114-sdhci" },
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{ .compatible = "nvidia,tegra124-sdhci" },
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{ .compatible = "nvidia,tegra210-sdhci" },
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{ .compatible = "nvidia,tegra186-sdhci" },
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{ }
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};
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/* See if any Tegra186 MMC controllers are present */
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count = fdtdec_find_aliases_for_id(blob, "mmc",
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COMPAT_NVIDIA_TEGRA186_SDMMC, node_list,
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CONFIG_SYS_MMC_MAX_DEVICE);
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debug("%s: count of Tegra186 sdhci nodes is %d\n", __func__, count);
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if (process_nodes(blob, node_list, count)) {
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printf("%s: Error processing T186 mmc node(s)!\n", __func__);
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return;
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}
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/* See if any Tegra210 MMC controllers are present */
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count = fdtdec_find_aliases_for_id(blob, "mmc",
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COMPAT_NVIDIA_TEGRA210_SDMMC, node_list,
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CONFIG_SYS_MMC_MAX_DEVICE);
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debug("%s: count of Tegra210 sdhci nodes is %d\n", __func__, count);
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if (process_nodes(blob, node_list, count)) {
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printf("%s: Error processing T210 mmc node(s)!\n", __func__);
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return;
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}
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/* See if any Tegra124 MMC controllers are present */
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count = fdtdec_find_aliases_for_id(blob, "mmc",
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COMPAT_NVIDIA_TEGRA124_SDMMC, node_list,
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CONFIG_SYS_MMC_MAX_DEVICE);
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debug("%s: count of Tegra124 sdhci nodes is %d\n", __func__, count);
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if (process_nodes(blob, node_list, count)) {
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printf("%s: Error processing T124 mmc node(s)!\n", __func__);
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return;
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}
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/* See if any Tegra30 MMC controllers are present */
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count = fdtdec_find_aliases_for_id(blob, "mmc",
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COMPAT_NVIDIA_TEGRA30_SDMMC, node_list,
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CONFIG_SYS_MMC_MAX_DEVICE);
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debug("%s: count of T30 sdhci nodes is %d\n", __func__, count);
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if (process_nodes(blob, node_list, count)) {
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printf("%s: Error processing T30 mmc node(s)!\n", __func__);
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return;
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}
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/* Now look for any Tegra20 MMC controllers */
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count = fdtdec_find_aliases_for_id(blob, "mmc",
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COMPAT_NVIDIA_TEGRA20_SDMMC, node_list,
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CONFIG_SYS_MMC_MAX_DEVICE);
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debug("%s: count of T20 sdhci nodes is %d\n", __func__, count);
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if (process_nodes(blob, node_list, count)) {
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printf("%s: Error processing T20 mmc node(s)!\n", __func__);
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return;
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}
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}
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U_BOOT_DRIVER(tegra_mmc_drv) = {
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.name = "tegra_mmc",
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.id = UCLASS_MMC,
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.of_match = tegra_mmc_ids,
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.probe = tegra_mmc_probe,
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.priv_auto_alloc_size = sizeof(struct tegra_mmc_priv),
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};
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