1289 lines
34 KiB
C
1289 lines
34 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* UFS Host Controller driver for Exynos specific extensions
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*
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* Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
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* Author: Seungwon Jeon <essuuj@gmail.com>
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* Author: Alim Akhtar <alim.akhtar@samsung.com>
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*
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*/
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/phy/phy.h>
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#include <linux/platform_device.h>
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#include "ufshcd.h"
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#include "ufshcd-pltfrm.h"
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#include "ufshci.h"
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#include "unipro.h"
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#include "ufs-exynos.h"
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/*
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* Exynos's Vendor specific registers for UFSHCI
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*/
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#define HCI_TXPRDT_ENTRY_SIZE 0x00
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#define PRDT_PREFECT_EN BIT(31)
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#define PRDT_SET_SIZE(x) ((x) & 0x1F)
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#define HCI_RXPRDT_ENTRY_SIZE 0x04
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#define HCI_1US_TO_CNT_VAL 0x0C
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#define CNT_VAL_1US_MASK 0x3FF
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#define HCI_UTRL_NEXUS_TYPE 0x40
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#define HCI_UTMRL_NEXUS_TYPE 0x44
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#define HCI_SW_RST 0x50
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#define UFS_LINK_SW_RST BIT(0)
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#define UFS_UNIPRO_SW_RST BIT(1)
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#define UFS_SW_RST_MASK (UFS_UNIPRO_SW_RST | UFS_LINK_SW_RST)
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#define HCI_DATA_REORDER 0x60
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#define HCI_UNIPRO_APB_CLK_CTRL 0x68
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#define UNIPRO_APB_CLK(v, x) (((v) & ~0xF) | ((x) & 0xF))
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#define HCI_AXIDMA_RWDATA_BURST_LEN 0x6C
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#define HCI_GPIO_OUT 0x70
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#define HCI_ERR_EN_PA_LAYER 0x78
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#define HCI_ERR_EN_DL_LAYER 0x7C
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#define HCI_ERR_EN_N_LAYER 0x80
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#define HCI_ERR_EN_T_LAYER 0x84
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#define HCI_ERR_EN_DME_LAYER 0x88
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#define HCI_CLKSTOP_CTRL 0xB0
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#define REFCLK_STOP BIT(2)
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#define UNIPRO_MCLK_STOP BIT(1)
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#define UNIPRO_PCLK_STOP BIT(0)
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#define CLK_STOP_MASK (REFCLK_STOP |\
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UNIPRO_MCLK_STOP |\
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UNIPRO_PCLK_STOP)
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#define HCI_MISC 0xB4
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#define REFCLK_CTRL_EN BIT(7)
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#define UNIPRO_PCLK_CTRL_EN BIT(6)
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#define UNIPRO_MCLK_CTRL_EN BIT(5)
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#define HCI_CORECLK_CTRL_EN BIT(4)
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#define CLK_CTRL_EN_MASK (REFCLK_CTRL_EN |\
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UNIPRO_PCLK_CTRL_EN |\
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UNIPRO_MCLK_CTRL_EN)
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/* Device fatal error */
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#define DFES_ERR_EN BIT(31)
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#define DFES_DEF_L2_ERRS (UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF |\
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UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
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#define DFES_DEF_L3_ERRS (UIC_NETWORK_UNSUPPORTED_HEADER_TYPE |\
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UIC_NETWORK_BAD_DEVICEID_ENC |\
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UIC_NETWORK_LHDR_TRAP_PACKET_DROPPING)
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#define DFES_DEF_L4_ERRS (UIC_TRANSPORT_UNSUPPORTED_HEADER_TYPE |\
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UIC_TRANSPORT_UNKNOWN_CPORTID |\
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UIC_TRANSPORT_NO_CONNECTION_RX |\
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UIC_TRANSPORT_BAD_TC)
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enum {
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UNIPRO_L1_5 = 0,/* PHY Adapter */
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UNIPRO_L2, /* Data Link */
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UNIPRO_L3, /* Network */
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UNIPRO_L4, /* Transport */
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UNIPRO_DME, /* DME */
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};
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/*
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* UNIPRO registers
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*/
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#define UNIPRO_COMP_VERSION 0x000
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#define UNIPRO_DME_PWR_REQ 0x090
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#define UNIPRO_DME_PWR_REQ_POWERMODE 0x094
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#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER0 0x098
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#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER1 0x09C
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#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER2 0x0A0
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#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER0 0x0A4
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#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER1 0x0A8
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#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER2 0x0AC
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/*
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* UFS Protector registers
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*/
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#define UFSPRSECURITY 0x010
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#define NSSMU BIT(14)
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#define UFSPSBEGIN0 0x200
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#define UFSPSEND0 0x204
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#define UFSPSLUN0 0x208
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#define UFSPSCTRL0 0x20C
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#define CNTR_DIV_VAL 40
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static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en);
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static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en);
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static inline void exynos_ufs_enable_auto_ctrl_hcc(struct exynos_ufs *ufs)
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{
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exynos_ufs_auto_ctrl_hcc(ufs, true);
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}
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static inline void exynos_ufs_disable_auto_ctrl_hcc(struct exynos_ufs *ufs)
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{
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exynos_ufs_auto_ctrl_hcc(ufs, false);
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}
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static inline void exynos_ufs_disable_auto_ctrl_hcc_save(
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struct exynos_ufs *ufs, u32 *val)
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{
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*val = hci_readl(ufs, HCI_MISC);
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exynos_ufs_auto_ctrl_hcc(ufs, false);
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}
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static inline void exynos_ufs_auto_ctrl_hcc_restore(
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struct exynos_ufs *ufs, u32 *val)
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{
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hci_writel(ufs, *val, HCI_MISC);
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}
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static inline void exynos_ufs_gate_clks(struct exynos_ufs *ufs)
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{
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exynos_ufs_ctrl_clkstop(ufs, true);
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}
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static inline void exynos_ufs_ungate_clks(struct exynos_ufs *ufs)
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{
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exynos_ufs_ctrl_clkstop(ufs, false);
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}
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static int exynos7_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
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{
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return 0;
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}
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static int exynos7_ufs_pre_link(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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u32 val = ufs->drv_data->uic_attr->pa_dbg_option_suite;
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int i;
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exynos_ufs_enable_ov_tm(hba);
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for_each_ufs_tx_lane(ufs, i)
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x297, i), 0x17);
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for_each_ufs_rx_lane(ufs, i) {
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x362, i), 0xff);
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x363, i), 0x00);
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}
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exynos_ufs_disable_ov_tm(hba);
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for_each_ufs_tx_lane(ufs, i)
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ufshcd_dme_set(hba,
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UIC_ARG_MIB_SEL(TX_HIBERN8_CONTROL, i), 0x0);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_TXPHY_CFGUPDT), 0x1);
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udelay(1);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val | (1 << 12));
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_RESET_PHY), 0x1);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_LINE_RESET), 0x1);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_LINE_RESET_REQ), 0x1);
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udelay(1600);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val);
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return 0;
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}
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static int exynos7_ufs_post_link(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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int i;
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exynos_ufs_enable_ov_tm(hba);
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for_each_ufs_tx_lane(ufs, i) {
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x28b, i), 0x83);
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x29a, i), 0x07);
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ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x277, i),
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TX_LINERESET_N(exynos_ufs_calc_time_cntr(ufs, 200000)));
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}
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exynos_ufs_disable_ov_tm(hba);
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exynos_ufs_enable_dbg_mode(hba);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_SAVECONFIGTIME), 0xbb8);
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exynos_ufs_disable_dbg_mode(hba);
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return 0;
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}
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static int exynos7_ufs_pre_pwr_change(struct exynos_ufs *ufs,
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struct ufs_pa_layer_attr *pwr)
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{
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unipro_writel(ufs, 0x22, UNIPRO_DBG_FORCE_DME_CTRL_STATE);
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return 0;
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}
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static int exynos7_ufs_post_pwr_change(struct exynos_ufs *ufs,
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struct ufs_pa_layer_attr *pwr)
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{
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struct ufs_hba *hba = ufs->hba;
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int lanes = max_t(u32, pwr->lane_rx, pwr->lane_tx);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_RXPHY_CFGUPDT), 0x1);
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if (lanes == 1) {
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exynos_ufs_enable_dbg_mode(hba);
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ufshcd_dme_set(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), 0x1);
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exynos_ufs_disable_dbg_mode(hba);
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}
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return 0;
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}
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/*
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* exynos_ufs_auto_ctrl_hcc - HCI core clock control by h/w
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* Control should be disabled in the below cases
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* - Before host controller S/W reset
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* - Access to UFS protector's register
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*/
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static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en)
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{
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u32 misc = hci_readl(ufs, HCI_MISC);
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if (en)
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hci_writel(ufs, misc | HCI_CORECLK_CTRL_EN, HCI_MISC);
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else
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hci_writel(ufs, misc & ~HCI_CORECLK_CTRL_EN, HCI_MISC);
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}
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static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en)
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{
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u32 ctrl = hci_readl(ufs, HCI_CLKSTOP_CTRL);
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u32 misc = hci_readl(ufs, HCI_MISC);
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if (en) {
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hci_writel(ufs, misc | CLK_CTRL_EN_MASK, HCI_MISC);
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hci_writel(ufs, ctrl | CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
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} else {
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hci_writel(ufs, ctrl & ~CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
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hci_writel(ufs, misc & ~CLK_CTRL_EN_MASK, HCI_MISC);
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}
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}
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static int exynos_ufs_get_clk_info(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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struct list_head *head = &hba->clk_list_head;
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struct ufs_clk_info *clki;
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u32 pclk_rate;
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u32 f_min, f_max;
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u8 div = 0;
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int ret = 0;
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if (list_empty(head))
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goto out;
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list_for_each_entry(clki, head, list) {
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if (!IS_ERR(clki->clk)) {
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if (!strcmp(clki->name, "core_clk"))
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ufs->clk_hci_core = clki->clk;
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else if (!strcmp(clki->name, "sclk_unipro_main"))
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ufs->clk_unipro_main = clki->clk;
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}
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}
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if (!ufs->clk_hci_core || !ufs->clk_unipro_main) {
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dev_err(hba->dev, "failed to get clk info\n");
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ret = -EINVAL;
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goto out;
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}
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ufs->mclk_rate = clk_get_rate(ufs->clk_unipro_main);
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pclk_rate = clk_get_rate(ufs->clk_hci_core);
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f_min = ufs->pclk_avail_min;
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f_max = ufs->pclk_avail_max;
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if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
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do {
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pclk_rate /= (div + 1);
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if (pclk_rate <= f_max)
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break;
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div++;
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} while (pclk_rate >= f_min);
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}
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if (unlikely(pclk_rate < f_min || pclk_rate > f_max)) {
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dev_err(hba->dev, "not available pclk range %d\n", pclk_rate);
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ret = -EINVAL;
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goto out;
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}
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ufs->pclk_rate = pclk_rate;
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ufs->pclk_div = div;
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out:
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return ret;
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}
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static void exynos_ufs_set_unipro_pclk_div(struct exynos_ufs *ufs)
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{
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if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
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u32 val;
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val = hci_readl(ufs, HCI_UNIPRO_APB_CLK_CTRL);
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hci_writel(ufs, UNIPRO_APB_CLK(val, ufs->pclk_div),
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HCI_UNIPRO_APB_CLK_CTRL);
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}
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}
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static void exynos_ufs_set_pwm_clk_div(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
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ufshcd_dme_set(hba,
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UIC_ARG_MIB(CMN_PWM_CLK_CTRL), attr->cmn_pwm_clk_ctrl);
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}
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static void exynos_ufs_calc_pwm_clk_div(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
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const unsigned int div = 30, mult = 20;
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const unsigned long pwm_min = 3 * 1000 * 1000;
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const unsigned long pwm_max = 9 * 1000 * 1000;
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const int divs[] = {32, 16, 8, 4};
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unsigned long clk = 0, _clk, clk_period;
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int i = 0, clk_idx = -1;
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clk_period = UNIPRO_PCLK_PERIOD(ufs);
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for (i = 0; i < ARRAY_SIZE(divs); i++) {
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_clk = NSEC_PER_SEC * mult / (clk_period * divs[i] * div);
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if (_clk >= pwm_min && _clk <= pwm_max) {
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if (_clk > clk) {
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clk_idx = i;
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clk = _clk;
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}
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}
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}
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if (clk_idx == -1) {
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ufshcd_dme_get(hba, UIC_ARG_MIB(CMN_PWM_CLK_CTRL), &clk_idx);
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dev_err(hba->dev,
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"failed to decide pwm clock divider, will not change\n");
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}
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attr->cmn_pwm_clk_ctrl = clk_idx & PWM_CLK_CTRL_MASK;
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}
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long exynos_ufs_calc_time_cntr(struct exynos_ufs *ufs, long period)
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{
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const int precise = 10;
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long pclk_rate = ufs->pclk_rate;
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long clk_period, fraction;
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clk_period = UNIPRO_PCLK_PERIOD(ufs);
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fraction = ((NSEC_PER_SEC % pclk_rate) * precise) / pclk_rate;
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return (period * precise) / ((clk_period * precise) + fraction);
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}
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static void exynos_ufs_specify_phy_time_attr(struct exynos_ufs *ufs)
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{
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struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
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struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
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t_cfg->tx_linereset_p =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_p_nsec);
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t_cfg->tx_linereset_n =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_n_nsec);
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t_cfg->tx_high_z_cnt =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_high_z_cnt_nsec);
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t_cfg->tx_base_n_val =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_base_unit_nsec);
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t_cfg->tx_gran_n_val =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_gran_unit_nsec);
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t_cfg->tx_sleep_cnt =
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exynos_ufs_calc_time_cntr(ufs, attr->tx_sleep_cnt);
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t_cfg->rx_linereset =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_dif_p_nsec);
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t_cfg->rx_hibern8_wait =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_hibern8_wait_nsec);
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t_cfg->rx_base_n_val =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_base_unit_nsec);
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t_cfg->rx_gran_n_val =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_gran_unit_nsec);
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t_cfg->rx_sleep_cnt =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_sleep_cnt);
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t_cfg->rx_stall_cnt =
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exynos_ufs_calc_time_cntr(ufs, attr->rx_stall_cnt);
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}
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static void exynos_ufs_config_phy_time_attr(struct exynos_ufs *ufs)
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{
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struct ufs_hba *hba = ufs->hba;
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struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
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int i;
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|
exynos_ufs_set_pwm_clk_div(ufs);
|
|
|
|
exynos_ufs_enable_ov_tm(hba);
|
|
|
|
for_each_ufs_rx_lane(ufs, i) {
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_FILLER_ENABLE, i),
|
|
ufs->drv_data->uic_attr->rx_filler_enable);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_LINERESET_VAL, i),
|
|
RX_LINERESET(t_cfg->rx_linereset));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_07_00, i),
|
|
RX_BASE_NVAL_L(t_cfg->rx_base_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_15_08, i),
|
|
RX_BASE_NVAL_H(t_cfg->rx_base_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_07_00, i),
|
|
RX_GRAN_NVAL_L(t_cfg->rx_gran_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_10_08, i),
|
|
RX_GRAN_NVAL_H(t_cfg->rx_gran_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_SLEEP_CNT_TIMER, i),
|
|
RX_OV_SLEEP_CNT(t_cfg->rx_sleep_cnt));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_STALL_CNT_TIMER, i),
|
|
RX_OV_STALL_CNT(t_cfg->rx_stall_cnt));
|
|
}
|
|
|
|
for_each_ufs_tx_lane(ufs, i) {
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_LINERESET_P_VAL, i),
|
|
TX_LINERESET_P(t_cfg->tx_linereset_p));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_07_00, i),
|
|
TX_HIGH_Z_CNT_L(t_cfg->tx_high_z_cnt));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_11_08, i),
|
|
TX_HIGH_Z_CNT_H(t_cfg->tx_high_z_cnt));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_07_00, i),
|
|
TX_BASE_NVAL_L(t_cfg->tx_base_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_15_08, i),
|
|
TX_BASE_NVAL_H(t_cfg->tx_base_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_07_00, i),
|
|
TX_GRAN_NVAL_L(t_cfg->tx_gran_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_10_08, i),
|
|
TX_GRAN_NVAL_H(t_cfg->tx_gran_n_val));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_OV_SLEEP_CNT_TIMER, i),
|
|
TX_OV_H8_ENTER_EN |
|
|
TX_OV_SLEEP_CNT(t_cfg->tx_sleep_cnt));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_MIN_ACTIVATETIME, i),
|
|
ufs->drv_data->uic_attr->tx_min_activatetime);
|
|
}
|
|
|
|
exynos_ufs_disable_ov_tm(hba);
|
|
}
|
|
|
|
static void exynos_ufs_config_phy_cap_attr(struct exynos_ufs *ufs)
|
|
{
|
|
struct ufs_hba *hba = ufs->hba;
|
|
struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
|
|
int i;
|
|
|
|
exynos_ufs_enable_ov_tm(hba);
|
|
|
|
for_each_ufs_rx_lane(ufs, i) {
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G1_SYNC_LENGTH_CAP, i),
|
|
attr->rx_hs_g1_sync_len_cap);
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G2_SYNC_LENGTH_CAP, i),
|
|
attr->rx_hs_g2_sync_len_cap);
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G3_SYNC_LENGTH_CAP, i),
|
|
attr->rx_hs_g3_sync_len_cap);
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G1_PREP_LENGTH_CAP, i),
|
|
attr->rx_hs_g1_prep_sync_len_cap);
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G2_PREP_LENGTH_CAP, i),
|
|
attr->rx_hs_g2_prep_sync_len_cap);
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HS_G3_PREP_LENGTH_CAP, i),
|
|
attr->rx_hs_g3_prep_sync_len_cap);
|
|
}
|
|
|
|
if (attr->rx_adv_fine_gran_sup_en == 0) {
|
|
for_each_ufs_rx_lane(ufs, i) {
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP, i), 0);
|
|
|
|
if (attr->rx_min_actv_time_cap)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_MIN_ACTIVATETIME_CAP,
|
|
i), attr->rx_min_actv_time_cap);
|
|
|
|
if (attr->rx_hibern8_time_cap)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_HIBERN8TIME_CAP, i),
|
|
attr->rx_hibern8_time_cap);
|
|
}
|
|
} else if (attr->rx_adv_fine_gran_sup_en == 1) {
|
|
for_each_ufs_rx_lane(ufs, i) {
|
|
if (attr->rx_adv_fine_gran_step)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP,
|
|
i), RX_ADV_FINE_GRAN_STEP(
|
|
attr->rx_adv_fine_gran_step));
|
|
|
|
if (attr->rx_adv_min_actv_time_cap)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(
|
|
RX_ADV_MIN_ACTIVATETIME_CAP, i),
|
|
attr->rx_adv_min_actv_time_cap);
|
|
|
|
if (attr->rx_adv_hibern8_time_cap)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_ADV_HIBERN8TIME_CAP,
|
|
i),
|
|
attr->rx_adv_hibern8_time_cap);
|
|
}
|
|
}
|
|
|
|
exynos_ufs_disable_ov_tm(hba);
|
|
}
|
|
|
|
static void exynos_ufs_establish_connt(struct exynos_ufs *ufs)
|
|
{
|
|
struct ufs_hba *hba = ufs->hba;
|
|
enum {
|
|
DEV_ID = 0x00,
|
|
PEER_DEV_ID = 0x01,
|
|
PEER_CPORT_ID = 0x00,
|
|
TRAFFIC_CLASS = 0x00,
|
|
};
|
|
|
|
/* allow cport attributes to be set */
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_IDLE);
|
|
|
|
/* local unipro attributes */
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID), DEV_ID);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID_VALID), TRUE);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERDEVICEID), PEER_DEV_ID);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERCPORTID), PEER_CPORT_ID);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTFLAGS), CPORT_DEF_FLAGS);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_TRAFFICCLASS), TRAFFIC_CLASS);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_CONNECTED);
|
|
}
|
|
|
|
static void exynos_ufs_config_smu(struct exynos_ufs *ufs)
|
|
{
|
|
u32 reg, val;
|
|
|
|
exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
|
|
|
|
/* make encryption disabled by default */
|
|
reg = ufsp_readl(ufs, UFSPRSECURITY);
|
|
ufsp_writel(ufs, reg | NSSMU, UFSPRSECURITY);
|
|
ufsp_writel(ufs, 0x0, UFSPSBEGIN0);
|
|
ufsp_writel(ufs, 0xffffffff, UFSPSEND0);
|
|
ufsp_writel(ufs, 0xff, UFSPSLUN0);
|
|
ufsp_writel(ufs, 0xf1, UFSPSCTRL0);
|
|
|
|
exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
|
|
}
|
|
|
|
static void exynos_ufs_config_sync_pattern_mask(struct exynos_ufs *ufs,
|
|
struct ufs_pa_layer_attr *pwr)
|
|
{
|
|
struct ufs_hba *hba = ufs->hba;
|
|
u8 g = max_t(u32, pwr->gear_rx, pwr->gear_tx);
|
|
u32 mask, sync_len;
|
|
enum {
|
|
SYNC_LEN_G1 = 80 * 1000, /* 80us */
|
|
SYNC_LEN_G2 = 40 * 1000, /* 44us */
|
|
SYNC_LEN_G3 = 20 * 1000, /* 20us */
|
|
};
|
|
int i;
|
|
|
|
if (g == 1)
|
|
sync_len = SYNC_LEN_G1;
|
|
else if (g == 2)
|
|
sync_len = SYNC_LEN_G2;
|
|
else if (g == 3)
|
|
sync_len = SYNC_LEN_G3;
|
|
else
|
|
return;
|
|
|
|
mask = exynos_ufs_calc_time_cntr(ufs, sync_len);
|
|
mask = (mask >> 8) & 0xff;
|
|
|
|
exynos_ufs_enable_ov_tm(hba);
|
|
|
|
for_each_ufs_rx_lane(ufs, i)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB_SEL(RX_SYNC_MASK_LENGTH, i), mask);
|
|
|
|
exynos_ufs_disable_ov_tm(hba);
|
|
}
|
|
|
|
static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba,
|
|
struct ufs_pa_layer_attr *dev_max_params,
|
|
struct ufs_pa_layer_attr *dev_req_params)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
struct phy *generic_phy = ufs->phy;
|
|
struct ufs_dev_params ufs_exynos_cap;
|
|
int ret;
|
|
|
|
if (!dev_req_params) {
|
|
pr_err("%s: incoming dev_req_params is NULL\n", __func__);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ufshcd_init_pwr_dev_param(&ufs_exynos_cap);
|
|
|
|
ret = ufshcd_get_pwr_dev_param(&ufs_exynos_cap,
|
|
dev_max_params, dev_req_params);
|
|
if (ret) {
|
|
pr_err("%s: failed to determine capabilities\n", __func__);
|
|
goto out;
|
|
}
|
|
|
|
if (ufs->drv_data->pre_pwr_change)
|
|
ufs->drv_data->pre_pwr_change(ufs, dev_req_params);
|
|
|
|
if (ufshcd_is_hs_mode(dev_req_params)) {
|
|
exynos_ufs_config_sync_pattern_mask(ufs, dev_req_params);
|
|
|
|
switch (dev_req_params->hs_rate) {
|
|
case PA_HS_MODE_A:
|
|
case PA_HS_MODE_B:
|
|
phy_calibrate(generic_phy);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* setting for three timeout values for traffic class #0 */
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0), 8064);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1), 28224);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2), 20160);
|
|
|
|
return 0;
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
#define PWR_MODE_STR_LEN 64
|
|
static int exynos_ufs_post_pwr_mode(struct ufs_hba *hba,
|
|
struct ufs_pa_layer_attr *pwr_max,
|
|
struct ufs_pa_layer_attr *pwr_req)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
struct phy *generic_phy = ufs->phy;
|
|
int gear = max_t(u32, pwr_req->gear_rx, pwr_req->gear_tx);
|
|
int lanes = max_t(u32, pwr_req->lane_rx, pwr_req->lane_tx);
|
|
char pwr_str[PWR_MODE_STR_LEN] = "";
|
|
|
|
/* let default be PWM Gear 1, Lane 1 */
|
|
if (!gear)
|
|
gear = 1;
|
|
|
|
if (!lanes)
|
|
lanes = 1;
|
|
|
|
if (ufs->drv_data->post_pwr_change)
|
|
ufs->drv_data->post_pwr_change(ufs, pwr_req);
|
|
|
|
if ((ufshcd_is_hs_mode(pwr_req))) {
|
|
switch (pwr_req->hs_rate) {
|
|
case PA_HS_MODE_A:
|
|
case PA_HS_MODE_B:
|
|
phy_calibrate(generic_phy);
|
|
break;
|
|
}
|
|
|
|
snprintf(pwr_str, PWR_MODE_STR_LEN, "%s series_%s G_%d L_%d",
|
|
"FAST", pwr_req->hs_rate == PA_HS_MODE_A ? "A" : "B",
|
|
gear, lanes);
|
|
} else {
|
|
snprintf(pwr_str, PWR_MODE_STR_LEN, "%s G_%d L_%d",
|
|
"SLOW", gear, lanes);
|
|
}
|
|
|
|
dev_info(hba->dev, "Power mode changed to : %s\n", pwr_str);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void exynos_ufs_specify_nexus_t_xfer_req(struct ufs_hba *hba,
|
|
int tag, bool op)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
u32 type;
|
|
|
|
type = hci_readl(ufs, HCI_UTRL_NEXUS_TYPE);
|
|
|
|
if (op)
|
|
hci_writel(ufs, type | (1 << tag), HCI_UTRL_NEXUS_TYPE);
|
|
else
|
|
hci_writel(ufs, type & ~(1 << tag), HCI_UTRL_NEXUS_TYPE);
|
|
}
|
|
|
|
static void exynos_ufs_specify_nexus_t_tm_req(struct ufs_hba *hba,
|
|
int tag, u8 func)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
u32 type;
|
|
|
|
type = hci_readl(ufs, HCI_UTMRL_NEXUS_TYPE);
|
|
|
|
switch (func) {
|
|
case UFS_ABORT_TASK:
|
|
case UFS_QUERY_TASK:
|
|
hci_writel(ufs, type | (1 << tag), HCI_UTMRL_NEXUS_TYPE);
|
|
break;
|
|
case UFS_ABORT_TASK_SET:
|
|
case UFS_CLEAR_TASK_SET:
|
|
case UFS_LOGICAL_RESET:
|
|
case UFS_QUERY_TASK_SET:
|
|
hci_writel(ufs, type & ~(1 << tag), HCI_UTMRL_NEXUS_TYPE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int exynos_ufs_phy_init(struct exynos_ufs *ufs)
|
|
{
|
|
struct ufs_hba *hba = ufs->hba;
|
|
struct phy *generic_phy = ufs->phy;
|
|
int ret = 0;
|
|
|
|
if (ufs->avail_ln_rx == 0 || ufs->avail_ln_tx == 0) {
|
|
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILRXDATALANES),
|
|
&ufs->avail_ln_rx);
|
|
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILTXDATALANES),
|
|
&ufs->avail_ln_tx);
|
|
WARN(ufs->avail_ln_rx != ufs->avail_ln_tx,
|
|
"available data lane is not equal(rx:%d, tx:%d)\n",
|
|
ufs->avail_ln_rx, ufs->avail_ln_tx);
|
|
}
|
|
|
|
phy_set_bus_width(generic_phy, ufs->avail_ln_rx);
|
|
ret = phy_init(generic_phy);
|
|
if (ret) {
|
|
dev_err(hba->dev, "%s: phy init failed, ret = %d\n",
|
|
__func__, ret);
|
|
goto out_exit_phy;
|
|
}
|
|
|
|
return 0;
|
|
|
|
out_exit_phy:
|
|
phy_exit(generic_phy);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_ufs_config_unipro(struct exynos_ufs *ufs)
|
|
{
|
|
struct ufs_hba *hba = ufs->hba;
|
|
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_CLK_PERIOD),
|
|
DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTRAILINGCLOCKS),
|
|
ufs->drv_data->uic_attr->tx_trailingclks);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE),
|
|
ufs->drv_data->uic_attr->pa_dbg_option_suite);
|
|
}
|
|
|
|
static void exynos_ufs_config_intr(struct exynos_ufs *ufs, u32 errs, u8 index)
|
|
{
|
|
switch (index) {
|
|
case UNIPRO_L1_5:
|
|
hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_PA_LAYER);
|
|
break;
|
|
case UNIPRO_L2:
|
|
hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DL_LAYER);
|
|
break;
|
|
case UNIPRO_L3:
|
|
hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_N_LAYER);
|
|
break;
|
|
case UNIPRO_L4:
|
|
hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_T_LAYER);
|
|
break;
|
|
case UNIPRO_DME:
|
|
hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DME_LAYER);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int exynos_ufs_pre_link(struct ufs_hba *hba)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
|
|
/* hci */
|
|
exynos_ufs_config_intr(ufs, DFES_DEF_L2_ERRS, UNIPRO_L2);
|
|
exynos_ufs_config_intr(ufs, DFES_DEF_L3_ERRS, UNIPRO_L3);
|
|
exynos_ufs_config_intr(ufs, DFES_DEF_L4_ERRS, UNIPRO_L4);
|
|
exynos_ufs_set_unipro_pclk_div(ufs);
|
|
|
|
/* unipro */
|
|
exynos_ufs_config_unipro(ufs);
|
|
|
|
/* m-phy */
|
|
exynos_ufs_phy_init(ufs);
|
|
exynos_ufs_config_phy_time_attr(ufs);
|
|
exynos_ufs_config_phy_cap_attr(ufs);
|
|
|
|
if (ufs->drv_data->pre_link)
|
|
ufs->drv_data->pre_link(ufs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void exynos_ufs_fit_aggr_timeout(struct exynos_ufs *ufs)
|
|
{
|
|
u32 val;
|
|
|
|
val = exynos_ufs_calc_time_cntr(ufs, IATOVAL_NSEC / CNTR_DIV_VAL);
|
|
hci_writel(ufs, val & CNT_VAL_1US_MASK, HCI_1US_TO_CNT_VAL);
|
|
}
|
|
|
|
static int exynos_ufs_post_link(struct ufs_hba *hba)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
struct phy *generic_phy = ufs->phy;
|
|
struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
|
|
|
|
exynos_ufs_establish_connt(ufs);
|
|
exynos_ufs_fit_aggr_timeout(ufs);
|
|
|
|
hci_writel(ufs, 0xa, HCI_DATA_REORDER);
|
|
hci_writel(ufs, PRDT_SET_SIZE(12), HCI_TXPRDT_ENTRY_SIZE);
|
|
hci_writel(ufs, PRDT_SET_SIZE(12), HCI_RXPRDT_ENTRY_SIZE);
|
|
hci_writel(ufs, (1 << hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE);
|
|
hci_writel(ufs, (1 << hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE);
|
|
hci_writel(ufs, 0xf, HCI_AXIDMA_RWDATA_BURST_LEN);
|
|
|
|
if (ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)
|
|
ufshcd_dme_set(hba,
|
|
UIC_ARG_MIB(T_DBG_SKIP_INIT_HIBERN8_EXIT), TRUE);
|
|
|
|
if (attr->pa_granularity) {
|
|
exynos_ufs_enable_dbg_mode(hba);
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_GRANULARITY),
|
|
attr->pa_granularity);
|
|
exynos_ufs_disable_dbg_mode(hba);
|
|
|
|
if (attr->pa_tactivate)
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
|
|
attr->pa_tactivate);
|
|
if (attr->pa_hibern8time &&
|
|
!(ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER))
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
|
|
attr->pa_hibern8time);
|
|
}
|
|
|
|
if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
|
|
if (!attr->pa_granularity)
|
|
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
|
|
&attr->pa_granularity);
|
|
if (!attr->pa_hibern8time)
|
|
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
|
|
&attr->pa_hibern8time);
|
|
/*
|
|
* not wait for HIBERN8 time to exit hibernation
|
|
*/
|
|
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 0);
|
|
|
|
if (attr->pa_granularity < 1 || attr->pa_granularity > 6) {
|
|
/* Valid range for granularity: 1 ~ 6 */
|
|
dev_warn(hba->dev,
|
|
"%s: pa_granularity %d is invalid, assuming backwards compatibility\n",
|
|
__func__,
|
|
attr->pa_granularity);
|
|
attr->pa_granularity = 6;
|
|
}
|
|
}
|
|
|
|
phy_calibrate(generic_phy);
|
|
|
|
if (ufs->drv_data->post_link)
|
|
ufs->drv_data->post_link(ufs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exynos_ufs_parse_dt(struct device *dev, struct exynos_ufs *ufs)
|
|
{
|
|
struct device_node *np = dev->of_node;
|
|
struct exynos_ufs_drv_data *drv_data = &exynos_ufs_drvs;
|
|
struct exynos_ufs_uic_attr *attr;
|
|
int ret = 0;
|
|
|
|
while (drv_data->compatible) {
|
|
if (of_device_is_compatible(np, drv_data->compatible)) {
|
|
ufs->drv_data = drv_data;
|
|
break;
|
|
}
|
|
drv_data++;
|
|
}
|
|
|
|
if (ufs->drv_data && ufs->drv_data->uic_attr) {
|
|
attr = ufs->drv_data->uic_attr;
|
|
} else {
|
|
dev_err(dev, "failed to get uic attributes\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ufs->pclk_avail_min = PCLK_AVAIL_MIN;
|
|
ufs->pclk_avail_max = PCLK_AVAIL_MAX;
|
|
|
|
attr->rx_adv_fine_gran_sup_en = RX_ADV_FINE_GRAN_SUP_EN;
|
|
attr->rx_adv_fine_gran_step = RX_ADV_FINE_GRAN_STEP_VAL;
|
|
attr->rx_adv_min_actv_time_cap = RX_ADV_MIN_ACTV_TIME_CAP;
|
|
attr->pa_granularity = PA_GRANULARITY_VAL;
|
|
attr->pa_tactivate = PA_TACTIVATE_VAL;
|
|
attr->pa_hibern8time = PA_HIBERN8TIME_VAL;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static int exynos_ufs_init(struct ufs_hba *hba)
|
|
{
|
|
struct device *dev = hba->dev;
|
|
struct platform_device *pdev = to_platform_device(dev);
|
|
struct exynos_ufs *ufs;
|
|
int ret;
|
|
|
|
ufs = devm_kzalloc(dev, sizeof(*ufs), GFP_KERNEL);
|
|
if (!ufs)
|
|
return -ENOMEM;
|
|
|
|
/* exynos-specific hci */
|
|
ufs->reg_hci = devm_platform_ioremap_resource_byname(pdev, "vs_hci");
|
|
if (IS_ERR(ufs->reg_hci)) {
|
|
dev_err(dev, "cannot ioremap for hci vendor register\n");
|
|
return PTR_ERR(ufs->reg_hci);
|
|
}
|
|
|
|
/* unipro */
|
|
ufs->reg_unipro = devm_platform_ioremap_resource_byname(pdev, "unipro");
|
|
if (IS_ERR(ufs->reg_unipro)) {
|
|
dev_err(dev, "cannot ioremap for unipro register\n");
|
|
return PTR_ERR(ufs->reg_unipro);
|
|
}
|
|
|
|
/* ufs protector */
|
|
ufs->reg_ufsp = devm_platform_ioremap_resource_byname(pdev, "ufsp");
|
|
if (IS_ERR(ufs->reg_ufsp)) {
|
|
dev_err(dev, "cannot ioremap for ufs protector register\n");
|
|
return PTR_ERR(ufs->reg_ufsp);
|
|
}
|
|
|
|
ret = exynos_ufs_parse_dt(dev, ufs);
|
|
if (ret) {
|
|
dev_err(dev, "failed to get dt info.\n");
|
|
goto out;
|
|
}
|
|
|
|
ufs->phy = devm_phy_get(dev, "ufs-phy");
|
|
if (IS_ERR(ufs->phy)) {
|
|
ret = PTR_ERR(ufs->phy);
|
|
dev_err(dev, "failed to get ufs-phy\n");
|
|
goto out;
|
|
}
|
|
|
|
ret = phy_power_on(ufs->phy);
|
|
if (ret)
|
|
goto phy_off;
|
|
|
|
ufs->hba = hba;
|
|
ufs->opts = ufs->drv_data->opts;
|
|
ufs->rx_sel_idx = PA_MAXDATALANES;
|
|
if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX)
|
|
ufs->rx_sel_idx = 0;
|
|
hba->priv = (void *)ufs;
|
|
hba->quirks = ufs->drv_data->quirks;
|
|
if (ufs->drv_data->drv_init) {
|
|
ret = ufs->drv_data->drv_init(dev, ufs);
|
|
if (ret) {
|
|
dev_err(dev, "failed to init drv-data\n");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = exynos_ufs_get_clk_info(ufs);
|
|
if (ret)
|
|
goto out;
|
|
exynos_ufs_specify_phy_time_attr(ufs);
|
|
exynos_ufs_config_smu(ufs);
|
|
return 0;
|
|
|
|
phy_off:
|
|
phy_power_off(ufs->phy);
|
|
out:
|
|
hba->priv = NULL;
|
|
return ret;
|
|
}
|
|
|
|
static int exynos_ufs_host_reset(struct ufs_hba *hba)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
unsigned long timeout = jiffies + msecs_to_jiffies(1);
|
|
u32 val;
|
|
int ret = 0;
|
|
|
|
exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
|
|
|
|
hci_writel(ufs, UFS_SW_RST_MASK, HCI_SW_RST);
|
|
|
|
do {
|
|
if (!(hci_readl(ufs, HCI_SW_RST) & UFS_SW_RST_MASK))
|
|
goto out;
|
|
} while (time_before(jiffies, timeout));
|
|
|
|
dev_err(hba->dev, "timeout host sw-reset\n");
|
|
ret = -ETIMEDOUT;
|
|
|
|
out:
|
|
exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_ufs_dev_hw_reset(struct ufs_hba *hba)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
|
|
hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
|
|
udelay(5);
|
|
hci_writel(ufs, 1 << 0, HCI_GPIO_OUT);
|
|
}
|
|
|
|
static void exynos_ufs_pre_hibern8(struct ufs_hba *hba, u8 enter)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
|
|
|
|
if (!enter) {
|
|
if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
|
|
exynos_ufs_disable_auto_ctrl_hcc(ufs);
|
|
exynos_ufs_ungate_clks(ufs);
|
|
|
|
if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
|
|
const unsigned int granularity_tbl[] = {
|
|
1, 4, 8, 16, 32, 100
|
|
};
|
|
int h8_time = attr->pa_hibern8time *
|
|
granularity_tbl[attr->pa_granularity - 1];
|
|
unsigned long us;
|
|
s64 delta;
|
|
|
|
do {
|
|
delta = h8_time - ktime_us_delta(ktime_get(),
|
|
ufs->entry_hibern8_t);
|
|
if (delta <= 0)
|
|
break;
|
|
|
|
us = min_t(s64, delta, USEC_PER_MSEC);
|
|
if (us >= 10)
|
|
usleep_range(us, us + 10);
|
|
} while (1);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void exynos_ufs_post_hibern8(struct ufs_hba *hba, u8 enter)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
|
|
if (!enter) {
|
|
u32 cur_mode = 0;
|
|
u32 pwrmode;
|
|
|
|
if (ufshcd_is_hs_mode(&ufs->dev_req_params))
|
|
pwrmode = FAST_MODE;
|
|
else
|
|
pwrmode = SLOW_MODE;
|
|
|
|
ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PWRMODE), &cur_mode);
|
|
if (cur_mode != (pwrmode << 4 | pwrmode)) {
|
|
dev_warn(hba->dev, "%s: power mode change\n", __func__);
|
|
hba->pwr_info.pwr_rx = (cur_mode >> 4) & 0xf;
|
|
hba->pwr_info.pwr_tx = cur_mode & 0xf;
|
|
ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info);
|
|
}
|
|
|
|
if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB))
|
|
exynos_ufs_establish_connt(ufs);
|
|
} else {
|
|
ufs->entry_hibern8_t = ktime_get();
|
|
exynos_ufs_gate_clks(ufs);
|
|
if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
|
|
exynos_ufs_enable_auto_ctrl_hcc(ufs);
|
|
}
|
|
}
|
|
|
|
static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba,
|
|
enum ufs_notify_change_status status)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
int ret = 0;
|
|
|
|
switch (status) {
|
|
case PRE_CHANGE:
|
|
ret = exynos_ufs_host_reset(hba);
|
|
if (ret)
|
|
return ret;
|
|
exynos_ufs_dev_hw_reset(hba);
|
|
break;
|
|
case POST_CHANGE:
|
|
exynos_ufs_calc_pwm_clk_div(ufs);
|
|
if (!(ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL))
|
|
exynos_ufs_enable_auto_ctrl_hcc(ufs);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int exynos_ufs_link_startup_notify(struct ufs_hba *hba,
|
|
enum ufs_notify_change_status status)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (status) {
|
|
case PRE_CHANGE:
|
|
ret = exynos_ufs_pre_link(hba);
|
|
break;
|
|
case POST_CHANGE:
|
|
ret = exynos_ufs_post_link(hba);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int exynos_ufs_pwr_change_notify(struct ufs_hba *hba,
|
|
enum ufs_notify_change_status status,
|
|
struct ufs_pa_layer_attr *dev_max_params,
|
|
struct ufs_pa_layer_attr *dev_req_params)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (status) {
|
|
case PRE_CHANGE:
|
|
ret = exynos_ufs_pre_pwr_mode(hba, dev_max_params,
|
|
dev_req_params);
|
|
break;
|
|
case POST_CHANGE:
|
|
ret = exynos_ufs_post_pwr_mode(hba, NULL, dev_req_params);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void exynos_ufs_hibern8_notify(struct ufs_hba *hba,
|
|
enum uic_cmd_dme enter,
|
|
enum ufs_notify_change_status notify)
|
|
{
|
|
switch ((u8)notify) {
|
|
case PRE_CHANGE:
|
|
exynos_ufs_pre_hibern8(hba, enter);
|
|
break;
|
|
case POST_CHANGE:
|
|
exynos_ufs_post_hibern8(hba, enter);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
|
|
if (!ufshcd_is_link_active(hba))
|
|
phy_power_off(ufs->phy);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int exynos_ufs_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
|
|
{
|
|
struct exynos_ufs *ufs = ufshcd_get_variant(hba);
|
|
|
|
if (!ufshcd_is_link_active(hba))
|
|
phy_power_on(ufs->phy);
|
|
|
|
exynos_ufs_config_smu(ufs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
|
|
.name = "exynos_ufs",
|
|
.init = exynos_ufs_init,
|
|
.hce_enable_notify = exynos_ufs_hce_enable_notify,
|
|
.link_startup_notify = exynos_ufs_link_startup_notify,
|
|
.pwr_change_notify = exynos_ufs_pwr_change_notify,
|
|
.setup_xfer_req = exynos_ufs_specify_nexus_t_xfer_req,
|
|
.setup_task_mgmt = exynos_ufs_specify_nexus_t_tm_req,
|
|
.hibern8_notify = exynos_ufs_hibern8_notify,
|
|
.suspend = exynos_ufs_suspend,
|
|
.resume = exynos_ufs_resume,
|
|
};
|
|
|
|
static int exynos_ufs_probe(struct platform_device *pdev)
|
|
{
|
|
int err;
|
|
struct device *dev = &pdev->dev;
|
|
|
|
err = ufshcd_pltfrm_init(pdev, &ufs_hba_exynos_ops);
|
|
if (err)
|
|
dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int exynos_ufs_remove(struct platform_device *pdev)
|
|
{
|
|
struct ufs_hba *hba = platform_get_drvdata(pdev);
|
|
|
|
pm_runtime_get_sync(&(pdev)->dev);
|
|
ufshcd_remove(hba);
|
|
return 0;
|
|
}
|
|
|
|
struct exynos_ufs_drv_data exynos_ufs_drvs = {
|
|
|
|
.compatible = "samsung,exynos7-ufs",
|
|
.uic_attr = &exynos7_uic_attr,
|
|
.quirks = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
|
|
UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
|
|
UFSHCI_QUIRK_BROKEN_HCE |
|
|
UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR |
|
|
UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
|
|
UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL |
|
|
UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING |
|
|
UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE,
|
|
.opts = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
|
|
EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
|
|
EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX |
|
|
EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB |
|
|
EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER,
|
|
.drv_init = exynos7_ufs_drv_init,
|
|
.pre_link = exynos7_ufs_pre_link,
|
|
.post_link = exynos7_ufs_post_link,
|
|
.pre_pwr_change = exynos7_ufs_pre_pwr_change,
|
|
.post_pwr_change = exynos7_ufs_post_pwr_change,
|
|
};
|
|
|
|
static const struct of_device_id exynos_ufs_of_match[] = {
|
|
{ .compatible = "samsung,exynos7-ufs",
|
|
.data = &exynos_ufs_drvs },
|
|
{},
|
|
};
|
|
|
|
static const struct dev_pm_ops exynos_ufs_pm_ops = {
|
|
.suspend = ufshcd_pltfrm_suspend,
|
|
.resume = ufshcd_pltfrm_resume,
|
|
.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
|
|
.runtime_resume = ufshcd_pltfrm_runtime_resume,
|
|
.runtime_idle = ufshcd_pltfrm_runtime_idle,
|
|
};
|
|
|
|
static struct platform_driver exynos_ufs_pltform = {
|
|
.probe = exynos_ufs_probe,
|
|
.remove = exynos_ufs_remove,
|
|
.shutdown = ufshcd_pltfrm_shutdown,
|
|
.driver = {
|
|
.name = "exynos-ufshc",
|
|
.pm = &exynos_ufs_pm_ops,
|
|
.of_match_table = of_match_ptr(exynos_ufs_of_match),
|
|
},
|
|
};
|
|
module_platform_driver(exynos_ufs_pltform);
|
|
|
|
MODULE_AUTHOR("Alim Akhtar <alim.akhtar@samsung.com>");
|
|
MODULE_AUTHOR("Seungwon Jeon <essuuj@gmail.com>");
|
|
MODULE_DESCRIPTION("Exynos UFS HCI Driver");
|
|
MODULE_LICENSE("GPL v2");
|