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![Sowjanya Komatineni](/assets/img/avatar_default.png)
This patch adds check to call legacy power domain API
tegra_powergate_power_off() only when PM domain is not present.
Fixes: 868ed7311c
("ata: ahci_tegra: Add AHCI support for Tegra186")
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/1617915315-13639-2-git-send-email-skomatineni@nvidia.com
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
623 lines
18 KiB
C
623 lines
18 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* drivers/ata/ahci_tegra.c
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*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* Author:
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* Mikko Perttunen <mperttunen@nvidia.com>
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*/
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#include <linux/ahci_platform.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include <linux/reset.h>
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#include <soc/tegra/fuse.h>
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#include <soc/tegra/pmc.h>
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#include "ahci.h"
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#define DRV_NAME "tegra-ahci"
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#define SATA_CONFIGURATION_0 0x180
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#define SATA_CONFIGURATION_0_EN_FPCI BIT(0)
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#define SATA_CONFIGURATION_0_CLK_OVERRIDE BIT(31)
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#define SCFG_OFFSET 0x1000
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#define T_SATA0_CFG_1 0x04
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#define T_SATA0_CFG_1_IO_SPACE BIT(0)
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#define T_SATA0_CFG_1_MEMORY_SPACE BIT(1)
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#define T_SATA0_CFG_1_BUS_MASTER BIT(2)
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#define T_SATA0_CFG_1_SERR BIT(8)
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#define T_SATA0_CFG_9 0x24
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#define T_SATA0_CFG_9_BASE_ADDRESS 0x40020000
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#define SATA_FPCI_BAR5 0x94
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#define SATA_FPCI_BAR5_START_MASK (0xfffffff << 4)
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#define SATA_FPCI_BAR5_START (0x0040020 << 4)
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#define SATA_FPCI_BAR5_ACCESS_TYPE (0x1)
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#define SATA_INTR_MASK 0x188
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#define SATA_INTR_MASK_IP_INT_MASK BIT(16)
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#define T_SATA0_CFG_35 0x94
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#define T_SATA0_CFG_35_IDP_INDEX_MASK (0x7ff << 2)
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#define T_SATA0_CFG_35_IDP_INDEX (0x2a << 2)
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#define T_SATA0_AHCI_IDP1 0x98
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#define T_SATA0_AHCI_IDP1_DATA (0x400040)
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#define T_SATA0_CFG_PHY_1 0x12c
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#define T_SATA0_CFG_PHY_1_PADS_IDDQ_EN BIT(23)
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#define T_SATA0_CFG_PHY_1_PAD_PLL_IDDQ_EN BIT(22)
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#define T_SATA0_NVOOB 0x114
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#define T_SATA0_NVOOB_SQUELCH_FILTER_MODE_MASK (0x3 << 24)
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#define T_SATA0_NVOOB_SQUELCH_FILTER_MODE (0x1 << 24)
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#define T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH_MASK (0x3 << 26)
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#define T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH (0x3 << 26)
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#define T_SATA_CFG_PHY_0 0x120
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#define T_SATA_CFG_PHY_0_USE_7BIT_ALIGN_DET_FOR_SPD BIT(11)
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#define T_SATA_CFG_PHY_0_MASK_SQUELCH BIT(24)
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#define T_SATA0_CFG2NVOOB_2 0x134
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#define T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW_MASK (0x1ff << 18)
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#define T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW (0xc << 18)
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#define T_SATA0_AHCI_HBA_CAP_BKDR 0x300
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#define T_SATA0_AHCI_HBA_CAP_BKDR_PARTIAL_ST_CAP BIT(13)
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#define T_SATA0_AHCI_HBA_CAP_BKDR_SLUMBER_ST_CAP BIT(14)
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#define T_SATA0_AHCI_HBA_CAP_BKDR_SALP BIT(26)
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#define T_SATA0_AHCI_HBA_CAP_BKDR_SUPP_PM BIT(17)
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#define T_SATA0_AHCI_HBA_CAP_BKDR_SNCQ BIT(30)
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#define T_SATA0_BKDOOR_CC 0x4a4
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#define T_SATA0_BKDOOR_CC_CLASS_CODE_MASK (0xffff << 16)
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#define T_SATA0_BKDOOR_CC_CLASS_CODE (0x0106 << 16)
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#define T_SATA0_BKDOOR_CC_PROG_IF_MASK (0xff << 8)
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#define T_SATA0_BKDOOR_CC_PROG_IF (0x01 << 8)
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#define T_SATA0_CFG_SATA 0x54c
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#define T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN BIT(12)
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#define T_SATA0_CFG_MISC 0x550
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#define T_SATA0_INDEX 0x680
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#define T_SATA0_CHX_PHY_CTRL1_GEN1 0x690
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#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_MASK 0xff
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#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT 0
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#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_MASK (0xff << 8)
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#define T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT 8
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#define T_SATA0_CHX_PHY_CTRL1_GEN2 0x694
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#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_MASK 0xff
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#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_SHIFT 0
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#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_MASK (0xff << 12)
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#define T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_SHIFT 12
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#define T_SATA0_CHX_PHY_CTRL2 0x69c
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#define T_SATA0_CHX_PHY_CTRL2_CDR_CNTL_GEN1 0x23
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#define T_SATA0_CHX_PHY_CTRL11 0x6d0
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#define T_SATA0_CHX_PHY_CTRL11_GEN2_RX_EQ (0x2800 << 16)
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#define T_SATA0_CHX_PHY_CTRL17_0 0x6e8
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#define T_SATA0_CHX_PHY_CTRL17_0_RX_EQ_CTRL_L_GEN1 0x55010000
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#define T_SATA0_CHX_PHY_CTRL18_0 0x6ec
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#define T_SATA0_CHX_PHY_CTRL18_0_RX_EQ_CTRL_L_GEN2 0x55010000
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#define T_SATA0_CHX_PHY_CTRL20_0 0x6f4
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#define T_SATA0_CHX_PHY_CTRL20_0_RX_EQ_CTRL_H_GEN1 0x1
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#define T_SATA0_CHX_PHY_CTRL21_0 0x6f8
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#define T_SATA0_CHX_PHY_CTRL21_0_RX_EQ_CTRL_H_GEN2 0x1
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/* AUX Registers */
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#define SATA_AUX_MISC_CNTL_1_0 0x8
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#define SATA_AUX_MISC_CNTL_1_0_DEVSLP_OVERRIDE BIT(17)
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#define SATA_AUX_MISC_CNTL_1_0_SDS_SUPPORT BIT(13)
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#define SATA_AUX_MISC_CNTL_1_0_DESO_SUPPORT BIT(15)
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#define SATA_AUX_RX_STAT_INT_0 0xc
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#define SATA_AUX_RX_STAT_INT_0_SATA_DEVSLP BIT(7)
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#define SATA_AUX_SPARE_CFG0_0 0x18
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#define SATA_AUX_SPARE_CFG0_0_MDAT_TIMER_AFTER_PG_VALID BIT(14)
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#define FUSE_SATA_CALIB 0x124
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#define FUSE_SATA_CALIB_MASK 0x3
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struct sata_pad_calibration {
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u8 gen1_tx_amp;
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u8 gen1_tx_peak;
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u8 gen2_tx_amp;
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u8 gen2_tx_peak;
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};
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static const struct sata_pad_calibration tegra124_pad_calibration[] = {
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{0x18, 0x04, 0x18, 0x0a},
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{0x0e, 0x04, 0x14, 0x0a},
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{0x0e, 0x07, 0x1a, 0x0e},
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{0x14, 0x0e, 0x1a, 0x0e},
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};
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struct tegra_ahci_ops {
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int (*init)(struct ahci_host_priv *hpriv);
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};
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struct tegra_ahci_regs {
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unsigned int nvoob_comma_cnt_mask;
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unsigned int nvoob_comma_cnt_val;
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};
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struct tegra_ahci_soc {
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const char *const *supply_names;
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u32 num_supplies;
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bool supports_devslp;
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bool has_sata_oob_rst;
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const struct tegra_ahci_ops *ops;
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const struct tegra_ahci_regs *regs;
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};
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struct tegra_ahci_priv {
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struct platform_device *pdev;
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void __iomem *sata_regs;
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void __iomem *sata_aux_regs;
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struct reset_control *sata_rst;
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struct reset_control *sata_oob_rst;
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struct reset_control *sata_cold_rst;
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/* Needs special handling, cannot use ahci_platform */
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struct clk *sata_clk;
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struct regulator_bulk_data *supplies;
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const struct tegra_ahci_soc *soc;
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};
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static void tegra_ahci_handle_quirks(struct ahci_host_priv *hpriv)
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{
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struct tegra_ahci_priv *tegra = hpriv->plat_data;
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u32 val;
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if (tegra->sata_aux_regs && !tegra->soc->supports_devslp) {
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val = readl(tegra->sata_aux_regs + SATA_AUX_MISC_CNTL_1_0);
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val &= ~SATA_AUX_MISC_CNTL_1_0_SDS_SUPPORT;
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writel(val, tegra->sata_aux_regs + SATA_AUX_MISC_CNTL_1_0);
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}
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}
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static int tegra124_ahci_init(struct ahci_host_priv *hpriv)
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{
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struct tegra_ahci_priv *tegra = hpriv->plat_data;
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struct sata_pad_calibration calib;
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int ret;
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u32 val;
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/* Pad calibration */
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ret = tegra_fuse_readl(FUSE_SATA_CALIB, &val);
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if (ret)
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return ret;
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calib = tegra124_pad_calibration[val & FUSE_SATA_CALIB_MASK];
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writel(BIT(0), tegra->sata_regs + SCFG_OFFSET + T_SATA0_INDEX);
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val = readl(tegra->sata_regs +
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SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL1_GEN1);
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val &= ~T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_MASK;
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val &= ~T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_MASK;
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val |= calib.gen1_tx_amp << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT;
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val |= calib.gen1_tx_peak << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT;
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writel(val, tegra->sata_regs + SCFG_OFFSET +
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T_SATA0_CHX_PHY_CTRL1_GEN1);
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val = readl(tegra->sata_regs +
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SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL1_GEN2);
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val &= ~T_SATA0_CHX_PHY_CTRL1_GEN2_TX_AMP_MASK;
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val &= ~T_SATA0_CHX_PHY_CTRL1_GEN2_TX_PEAK_MASK;
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val |= calib.gen2_tx_amp << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_AMP_SHIFT;
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val |= calib.gen2_tx_peak << T_SATA0_CHX_PHY_CTRL1_GEN1_TX_PEAK_SHIFT;
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writel(val, tegra->sata_regs + SCFG_OFFSET +
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T_SATA0_CHX_PHY_CTRL1_GEN2);
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writel(T_SATA0_CHX_PHY_CTRL11_GEN2_RX_EQ,
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tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL11);
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writel(T_SATA0_CHX_PHY_CTRL2_CDR_CNTL_GEN1,
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tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL2);
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writel(0, tegra->sata_regs + SCFG_OFFSET + T_SATA0_INDEX);
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return 0;
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}
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static int tegra_ahci_power_on(struct ahci_host_priv *hpriv)
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{
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struct tegra_ahci_priv *tegra = hpriv->plat_data;
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int ret;
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ret = regulator_bulk_enable(tegra->soc->num_supplies,
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tegra->supplies);
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if (ret)
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return ret;
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if (!tegra->pdev->dev.pm_domain) {
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ret = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_SATA,
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tegra->sata_clk,
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tegra->sata_rst);
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if (ret)
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goto disable_regulators;
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}
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reset_control_assert(tegra->sata_oob_rst);
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reset_control_assert(tegra->sata_cold_rst);
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ret = ahci_platform_enable_resources(hpriv);
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if (ret)
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goto disable_power;
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reset_control_deassert(tegra->sata_cold_rst);
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reset_control_deassert(tegra->sata_oob_rst);
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return 0;
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disable_power:
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clk_disable_unprepare(tegra->sata_clk);
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if (!tegra->pdev->dev.pm_domain)
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tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
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disable_regulators:
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regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
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return ret;
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}
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static void tegra_ahci_power_off(struct ahci_host_priv *hpriv)
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{
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struct tegra_ahci_priv *tegra = hpriv->plat_data;
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ahci_platform_disable_resources(hpriv);
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reset_control_assert(tegra->sata_rst);
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reset_control_assert(tegra->sata_oob_rst);
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reset_control_assert(tegra->sata_cold_rst);
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clk_disable_unprepare(tegra->sata_clk);
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if (!tegra->pdev->dev.pm_domain)
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tegra_powergate_power_off(TEGRA_POWERGATE_SATA);
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regulator_bulk_disable(tegra->soc->num_supplies, tegra->supplies);
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}
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static int tegra_ahci_controller_init(struct ahci_host_priv *hpriv)
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{
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struct tegra_ahci_priv *tegra = hpriv->plat_data;
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int ret;
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u32 val;
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ret = tegra_ahci_power_on(hpriv);
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if (ret) {
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dev_err(&tegra->pdev->dev,
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"failed to power on AHCI controller: %d\n", ret);
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return ret;
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}
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/*
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* Program the following SATA IPFS registers to allow SW accesses to
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* SATA's MMIO register range.
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*/
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val = readl(tegra->sata_regs + SATA_FPCI_BAR5);
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val &= ~(SATA_FPCI_BAR5_START_MASK | SATA_FPCI_BAR5_ACCESS_TYPE);
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val |= SATA_FPCI_BAR5_START | SATA_FPCI_BAR5_ACCESS_TYPE;
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writel(val, tegra->sata_regs + SATA_FPCI_BAR5);
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/* Program the following SATA IPFS register to enable the SATA */
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val = readl(tegra->sata_regs + SATA_CONFIGURATION_0);
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val |= SATA_CONFIGURATION_0_EN_FPCI;
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writel(val, tegra->sata_regs + SATA_CONFIGURATION_0);
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/* Electrical settings for better link stability */
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val = T_SATA0_CHX_PHY_CTRL17_0_RX_EQ_CTRL_L_GEN1;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL17_0);
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val = T_SATA0_CHX_PHY_CTRL18_0_RX_EQ_CTRL_L_GEN2;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL18_0);
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val = T_SATA0_CHX_PHY_CTRL20_0_RX_EQ_CTRL_H_GEN1;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL20_0);
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val = T_SATA0_CHX_PHY_CTRL21_0_RX_EQ_CTRL_H_GEN2;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CHX_PHY_CTRL21_0);
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/* For SQUELCH Filter & Gen3 drive getting detected as Gen1 drive */
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val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA_CFG_PHY_0);
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val |= T_SATA_CFG_PHY_0_MASK_SQUELCH;
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val &= ~T_SATA_CFG_PHY_0_USE_7BIT_ALIGN_DET_FOR_SPD;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA_CFG_PHY_0);
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val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_NVOOB);
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val &= ~(tegra->soc->regs->nvoob_comma_cnt_mask |
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T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH_MASK |
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T_SATA0_NVOOB_SQUELCH_FILTER_MODE_MASK);
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val |= (tegra->soc->regs->nvoob_comma_cnt_val |
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T_SATA0_NVOOB_SQUELCH_FILTER_LENGTH |
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T_SATA0_NVOOB_SQUELCH_FILTER_MODE);
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_NVOOB);
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/*
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* Change CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW from 83.3 ns to 58.8ns
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*/
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val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG2NVOOB_2);
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val &= ~T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW_MASK;
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val |= T_SATA0_CFG2NVOOB_2_COMWAKE_IDLE_CNT_LOW;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG2NVOOB_2);
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if (tegra->soc->ops && tegra->soc->ops->init)
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tegra->soc->ops->init(hpriv);
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/*
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* Program the following SATA configuration registers to
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* initialize SATA
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*/
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val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_1);
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val |= (T_SATA0_CFG_1_IO_SPACE | T_SATA0_CFG_1_MEMORY_SPACE |
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T_SATA0_CFG_1_BUS_MASTER | T_SATA0_CFG_1_SERR);
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_1);
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val = T_SATA0_CFG_9_BASE_ADDRESS;
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writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_9);
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/* Program Class Code and Programming interface for SATA */
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
|
|
val |= T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN;
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
|
|
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_BKDOOR_CC);
|
|
val &=
|
|
~(T_SATA0_BKDOOR_CC_CLASS_CODE_MASK |
|
|
T_SATA0_BKDOOR_CC_PROG_IF_MASK);
|
|
val |= T_SATA0_BKDOOR_CC_CLASS_CODE | T_SATA0_BKDOOR_CC_PROG_IF;
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_BKDOOR_CC);
|
|
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
|
|
val &= ~T_SATA0_CFG_SATA_BACKDOOR_PROG_IF_EN;
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_SATA);
|
|
|
|
/* Enabling LPM capabilities through Backdoor Programming */
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);
|
|
val |= (T_SATA0_AHCI_HBA_CAP_BKDR_PARTIAL_ST_CAP |
|
|
T_SATA0_AHCI_HBA_CAP_BKDR_SLUMBER_ST_CAP |
|
|
T_SATA0_AHCI_HBA_CAP_BKDR_SALP |
|
|
T_SATA0_AHCI_HBA_CAP_BKDR_SUPP_PM);
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_HBA_CAP_BKDR);
|
|
|
|
/* SATA Second Level Clock Gating configuration
|
|
* Enabling Gating of Tx/Rx clocks and driving Pad IDDQ and Lane
|
|
* IDDQ Signals
|
|
*/
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_35);
|
|
val &= ~T_SATA0_CFG_35_IDP_INDEX_MASK;
|
|
val |= T_SATA0_CFG_35_IDP_INDEX;
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_35);
|
|
|
|
val = T_SATA0_AHCI_IDP1_DATA;
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_AHCI_IDP1);
|
|
|
|
val = readl(tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_PHY_1);
|
|
val |= (T_SATA0_CFG_PHY_1_PADS_IDDQ_EN |
|
|
T_SATA0_CFG_PHY_1_PAD_PLL_IDDQ_EN);
|
|
writel(val, tegra->sata_regs + SCFG_OFFSET + T_SATA0_CFG_PHY_1);
|
|
|
|
/* Enabling IPFS Clock Gating */
|
|
val = readl(tegra->sata_regs + SATA_CONFIGURATION_0);
|
|
val &= ~SATA_CONFIGURATION_0_CLK_OVERRIDE;
|
|
writel(val, tegra->sata_regs + SATA_CONFIGURATION_0);
|
|
|
|
tegra_ahci_handle_quirks(hpriv);
|
|
|
|
/* Unmask SATA interrupts */
|
|
|
|
val = readl(tegra->sata_regs + SATA_INTR_MASK);
|
|
val |= SATA_INTR_MASK_IP_INT_MASK;
|
|
writel(val, tegra->sata_regs + SATA_INTR_MASK);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tegra_ahci_controller_deinit(struct ahci_host_priv *hpriv)
|
|
{
|
|
tegra_ahci_power_off(hpriv);
|
|
}
|
|
|
|
static void tegra_ahci_host_stop(struct ata_host *host)
|
|
{
|
|
struct ahci_host_priv *hpriv = host->private_data;
|
|
|
|
tegra_ahci_controller_deinit(hpriv);
|
|
}
|
|
|
|
static struct ata_port_operations ahci_tegra_port_ops = {
|
|
.inherits = &ahci_ops,
|
|
.host_stop = tegra_ahci_host_stop,
|
|
};
|
|
|
|
static const struct ata_port_info ahci_tegra_port_info = {
|
|
.flags = AHCI_FLAG_COMMON | ATA_FLAG_NO_DIPM,
|
|
.pio_mask = ATA_PIO4,
|
|
.udma_mask = ATA_UDMA6,
|
|
.port_ops = &ahci_tegra_port_ops,
|
|
};
|
|
|
|
static const char *const tegra124_supply_names[] = {
|
|
"avdd", "hvdd", "vddio", "target-5v", "target-12v"
|
|
};
|
|
|
|
static const struct tegra_ahci_ops tegra124_ahci_ops = {
|
|
.init = tegra124_ahci_init,
|
|
};
|
|
|
|
static const struct tegra_ahci_regs tegra124_ahci_regs = {
|
|
.nvoob_comma_cnt_mask = GENMASK(30, 28),
|
|
.nvoob_comma_cnt_val = (7 << 28),
|
|
};
|
|
|
|
static const struct tegra_ahci_soc tegra124_ahci_soc = {
|
|
.supply_names = tegra124_supply_names,
|
|
.num_supplies = ARRAY_SIZE(tegra124_supply_names),
|
|
.supports_devslp = false,
|
|
.has_sata_oob_rst = true,
|
|
.ops = &tegra124_ahci_ops,
|
|
.regs = &tegra124_ahci_regs,
|
|
};
|
|
|
|
static const struct tegra_ahci_soc tegra210_ahci_soc = {
|
|
.supports_devslp = false,
|
|
.has_sata_oob_rst = true,
|
|
.regs = &tegra124_ahci_regs,
|
|
};
|
|
|
|
static const struct tegra_ahci_regs tegra186_ahci_regs = {
|
|
.nvoob_comma_cnt_mask = GENMASK(23, 16),
|
|
.nvoob_comma_cnt_val = (7 << 16),
|
|
};
|
|
|
|
static const struct tegra_ahci_soc tegra186_ahci_soc = {
|
|
.supports_devslp = false,
|
|
.has_sata_oob_rst = false,
|
|
.regs = &tegra186_ahci_regs,
|
|
};
|
|
|
|
static const struct of_device_id tegra_ahci_of_match[] = {
|
|
{
|
|
.compatible = "nvidia,tegra124-ahci",
|
|
.data = &tegra124_ahci_soc
|
|
},
|
|
{
|
|
.compatible = "nvidia,tegra210-ahci",
|
|
.data = &tegra210_ahci_soc
|
|
},
|
|
{
|
|
.compatible = "nvidia,tegra186-ahci",
|
|
.data = &tegra186_ahci_soc
|
|
},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tegra_ahci_of_match);
|
|
|
|
static struct scsi_host_template ahci_platform_sht = {
|
|
AHCI_SHT(DRV_NAME),
|
|
};
|
|
|
|
static int tegra_ahci_probe(struct platform_device *pdev)
|
|
{
|
|
struct ahci_host_priv *hpriv;
|
|
struct tegra_ahci_priv *tegra;
|
|
struct resource *res;
|
|
int ret;
|
|
|
|
hpriv = ahci_platform_get_resources(pdev, 0);
|
|
if (IS_ERR(hpriv))
|
|
return PTR_ERR(hpriv);
|
|
|
|
tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL);
|
|
if (!tegra)
|
|
return -ENOMEM;
|
|
|
|
hpriv->plat_data = tegra;
|
|
|
|
tegra->pdev = pdev;
|
|
tegra->soc = of_device_get_match_data(&pdev->dev);
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
tegra->sata_regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(tegra->sata_regs))
|
|
return PTR_ERR(tegra->sata_regs);
|
|
|
|
/*
|
|
* AUX registers is optional.
|
|
*/
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
|
|
if (res) {
|
|
tegra->sata_aux_regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(tegra->sata_aux_regs))
|
|
return PTR_ERR(tegra->sata_aux_regs);
|
|
}
|
|
|
|
tegra->sata_rst = devm_reset_control_get(&pdev->dev, "sata");
|
|
if (IS_ERR(tegra->sata_rst)) {
|
|
dev_err(&pdev->dev, "Failed to get sata reset\n");
|
|
return PTR_ERR(tegra->sata_rst);
|
|
}
|
|
|
|
if (tegra->soc->has_sata_oob_rst) {
|
|
tegra->sata_oob_rst = devm_reset_control_get(&pdev->dev,
|
|
"sata-oob");
|
|
if (IS_ERR(tegra->sata_oob_rst)) {
|
|
dev_err(&pdev->dev, "Failed to get sata-oob reset\n");
|
|
return PTR_ERR(tegra->sata_oob_rst);
|
|
}
|
|
}
|
|
|
|
tegra->sata_cold_rst = devm_reset_control_get(&pdev->dev, "sata-cold");
|
|
if (IS_ERR(tegra->sata_cold_rst)) {
|
|
dev_err(&pdev->dev, "Failed to get sata-cold reset\n");
|
|
return PTR_ERR(tegra->sata_cold_rst);
|
|
}
|
|
|
|
tegra->sata_clk = devm_clk_get(&pdev->dev, "sata");
|
|
if (IS_ERR(tegra->sata_clk)) {
|
|
dev_err(&pdev->dev, "Failed to get sata clock\n");
|
|
return PTR_ERR(tegra->sata_clk);
|
|
}
|
|
|
|
tegra->supplies = devm_kcalloc(&pdev->dev,
|
|
tegra->soc->num_supplies,
|
|
sizeof(*tegra->supplies), GFP_KERNEL);
|
|
if (!tegra->supplies)
|
|
return -ENOMEM;
|
|
|
|
regulator_bulk_set_supply_names(tegra->supplies,
|
|
tegra->soc->supply_names,
|
|
tegra->soc->num_supplies);
|
|
|
|
ret = devm_regulator_bulk_get(&pdev->dev,
|
|
tegra->soc->num_supplies,
|
|
tegra->supplies);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Failed to get regulators\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = tegra_ahci_controller_init(hpriv);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ahci_platform_init_host(pdev, hpriv, &ahci_tegra_port_info,
|
|
&ahci_platform_sht);
|
|
if (ret)
|
|
goto deinit_controller;
|
|
|
|
return 0;
|
|
|
|
deinit_controller:
|
|
tegra_ahci_controller_deinit(hpriv);
|
|
|
|
return ret;
|
|
};
|
|
|
|
static struct platform_driver tegra_ahci_driver = {
|
|
.probe = tegra_ahci_probe,
|
|
.remove = ata_platform_remove_one,
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
.of_match_table = tegra_ahci_of_match,
|
|
},
|
|
/* LP0 suspend support not implemented */
|
|
};
|
|
module_platform_driver(tegra_ahci_driver);
|
|
|
|
MODULE_AUTHOR("Mikko Perttunen <mperttunen@nvidia.com>");
|
|
MODULE_DESCRIPTION("Tegra AHCI SATA driver");
|
|
MODULE_LICENSE("GPL v2");
|