From: chevron <chevron.li@bayhubtech.com>
To: agross@kernel.org, bjorn.andersson@linaro.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: shaper.liu@bayhubtech.com, chevron.li@bayhubtech.com,
xiaoguang.yu@bayhubtech.com, shirley.her@bayhubtech.com
Subject: [PATCH V1 1/1]mmc:sdhci-bayhub:fix Qualcomm sd host 845 SD card compatibility issue
Date: Wed, 28 Jul 2021 10:43:57 -0700 [thread overview]
Message-ID: <20210728174357.21400-1-chevron.li@bayhubtech.com> (raw)
Improve the signal integrity for long SD bus trace by using 845+BH201 SD host redriver chip
Signed-off-by: chevron.li <chevron.li@bayhubtech.com>
---
change in V1:
1. copy Qualcomm driver base from sdhci-msm.c to sdhci-bayhub.c
2. implement the BH201 chip initialization function at sdhci-bayhub.c
3. implement the BH201 chip power control function at sdhci-bayhub.c
4. implement the BH201 chip tuning function at sdhci-bayhub.c
5. re-implement mmc_rescan to match BH201 mode switch flow at sdhci-bayhub.c
---
---
.../devicetree/bindings/mmc/sdhci-msm.txt | 1 +
drivers/mmc/host/Makefile | 1 +
drivers/mmc/host/sdhci-bayhub.c | 6563 +++++++++++++++++
3 files changed, 6565 insertions(+)
create mode 100644 drivers/mmc/host/sdhci-bayhub.c
diff --git a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
index 4c7fa6a4ed15..a0401dc16929 100644
--- a/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
+++ b/Documentation/devicetree/bindings/mmc/sdhci-msm.txt
@@ -20,6 +20,7 @@ Required properties:
"qcom,qcs404-sdhci", "qcom,sdhci-msm-v5"
"qcom,sc7180-sdhci", "qcom,sdhci-msm-v5";
"qcom,sdm845-sdhci", "qcom,sdhci-msm-v5"
+ "qcom,sdm845-bayhub-sdhci", "qcom,sdhci-msm-bayhub-v5"
"qcom,sdx55-sdhci", "qcom,sdhci-msm-v5";
"qcom,sm8250-sdhci", "qcom,sdhci-msm-v5"
NOTE that some old device tree files may be floating around that only
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 14004cc09aaa..d4d6f4cca732 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -93,6 +93,7 @@ obj-$(CONFIG_MMC_SDHCI_OF_SPARX5) += sdhci-of-sparx5.o
obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o
obj-$(CONFIG_MMC_SDHCI_IPROC) += sdhci-iproc.o
obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-msm.o
+obj-$(CONFIG_MMC_SDHCI_MSM) += sdhci-bayhub.o
obj-$(CONFIG_MMC_SDHCI_ST) += sdhci-st.o
obj-$(CONFIG_MMC_SDHCI_MICROCHIP_PIC32) += sdhci-pic32.o
obj-$(CONFIG_MMC_SDHCI_BRCMSTB) += sdhci-brcmstb.o
diff --git a/drivers/mmc/host/sdhci-bayhub.c b/drivers/mmc/host/sdhci-bayhub.c
new file mode 100644
index 000000000000..75029470bd22
--- /dev/null
+++ b/drivers/mmc/host/sdhci-bayhub.c
@@ -0,0 +1,6563 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Bayhub Technologies, Inc. BH201 SDHCI bridge IC for
+ * VENDOR SDHCI platform driver source file
+ *
+ * Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/delay.h>
+#include <linux/mmc/mmc.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm_opp.h>
+#include <linux/slab.h>
+#include <linux/iopoll.h>
+#include <linux/regulator/consumer.h>
+#include <linux/interconnect.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/sd.h>
+#include <linux/io.h>
+#include <linux/of_gpio.h>
+
+#include "sdhci-pltfm.h"
+#include "cqhci.h"
+#include "../core/core.h"
+#include "../core/sd_ops.h"
+#include "../core/sdio_ops.h"
+#include "../core/mmc_ops.h"
+#include "../core/sd.h"
+#include "../core/bus.h"
+#include "../core/host.h"
+#include "../core/card.h"
+#include "../core/pwrseq.h"
+
+#define TRUE 1
+#define FALSE 0
+
+#define SD_FNC_AM_SDR50 0x2
+#define SD_FNC_AM_SDR104 0x3
+#define BIT_PASS_MASK (0x7ff)
+#define SDR104_MANUAL_INJECT 0x3ff
+#define SDR50_MANUAL_INJECT 0x77f
+
+#define TRUNING_RING_IDX(x) ((x) % TUNING_PHASE_SIZE)
+#define GET_IDX_VALUE(tb, x) (tb & (1 << (x)))
+#define GENERATE_IDX_VALUE(x) (1 << (x))
+#define GET_TRUNING_RING_IDX_VALUE(tb, x) \
+ (tb & (1 << TRUNING_RING_IDX(x)))
+#define GENERATE_TRUNING_RING_IDX_VALUE(x) \
+ (1 << TRUNING_RING_IDX(x))
+#define MAX_CFG_BIT_VAL (383)
+
+#define CORE_MCI_VERSION 0x50
+#define CORE_VERSION_MAJOR_SHIFT 28
+#define CORE_VERSION_MAJOR_MASK (0xf << CORE_VERSION_MAJOR_SHIFT)
+#define CORE_VERSION_MINOR_MASK 0xff
+
+#define CORE_MCI_GENERICS 0x70
+#define SWITCHABLE_SIGNALING_VOLTAGE BIT(29)
+
+#define HC_MODE_EN 0x1
+#define CORE_POWER 0x0
+#define CORE_SW_RST BIT(7)
+#define FF_CLK_SW_RST_DIS BIT(13)
+
+#define CORE_PWRCTL_BUS_OFF BIT(0)
+#define CORE_PWRCTL_BUS_ON BIT(1)
+#define CORE_PWRCTL_IO_LOW BIT(2)
+#define CORE_PWRCTL_IO_HIGH BIT(3)
+#define CORE_PWRCTL_BUS_SUCCESS BIT(0)
+#define CORE_PWRCTL_BUS_FAIL BIT(1)
+#define CORE_PWRCTL_IO_SUCCESS BIT(2)
+#define CORE_PWRCTL_IO_FAIL BIT(3)
+#define REQ_BUS_OFF BIT(0)
+#define REQ_BUS_ON BIT(1)
+#define REQ_IO_LOW BIT(2)
+#define REQ_IO_HIGH BIT(3)
+#define INT_MASK 0xf
+#define MAX_PHASES 16
+#define CORE_DLL_LOCK BIT(7)
+#define CORE_DDR_DLL_LOCK BIT(11)
+#define CORE_DLL_EN BIT(16)
+#define CORE_CDR_EN BIT(17)
+#define CORE_CK_OUT_EN BIT(18)
+#define CORE_CDR_EXT_EN BIT(19)
+#define CORE_DLL_PDN BIT(29)
+#define CORE_DLL_RST BIT(30)
+#define CORE_CMD_DAT_TRACK_SEL BIT(0)
+
+#define CORE_DDR_CAL_EN BIT(0)
+#define CORE_FLL_CYCLE_CNT BIT(18)
+#define CORE_DLL_CLOCK_DISABLE BIT(21)
+
+#define DLL_USR_CTL_POR_VAL 0x10800
+#define ENABLE_DLL_LOCK_STATUS BIT(26)
+#define FINE_TUNE_MODE_EN BIT(27)
+#define BIAS_OK_SIGNAL BIT(29)
+
+#define DLL_CONFIG_3_LOW_FREQ_VAL 0x08
+#define DLL_CONFIG_3_HIGH_FREQ_VAL 0x10
+
+#define CORE_VENDOR_SPEC_POR_VAL 0xa9c
+#define CORE_CLK_PWRSAVE BIT(1)
+#define CORE_HC_MCLK_SEL_DFLT (2 << 8)
+#define CORE_HC_MCLK_SEL_HS400 (3 << 8)
+#define CORE_HC_MCLK_SEL_MASK (3 << 8)
+#define CORE_IO_PAD_PWR_SWITCH_EN BIT(15)
+#define CORE_IO_PAD_PWR_SWITCH BIT(16)
+#define CORE_HC_SELECT_IN_EN BIT(18)
+#define CORE_HC_SELECT_IN_HS400 (6 << 19)
+#define CORE_HC_SELECT_IN_MASK (7 << 19)
+
+#define CORE_3_0V_SUPPORT BIT(25)
+#define CORE_1_8V_SUPPORT BIT(26)
+#define CORE_VOLT_SUPPORT (CORE_3_0V_SUPPORT | CORE_1_8V_SUPPORT)
+
+#define CORE_CSR_CDC_CTLR_CFG0 0x130
+#define CORE_SW_TRIG_FULL_CALIB BIT(16)
+#define CORE_HW_AUTOCAL_ENA BIT(17)
+
+#define CORE_CSR_CDC_CTLR_CFG1 0x134
+#define CORE_CSR_CDC_CAL_TIMER_CFG0 0x138
+#define CORE_TIMER_ENA BIT(16)
+
+#define CORE_CSR_CDC_CAL_TIMER_CFG1 0x13C
+#define CORE_CSR_CDC_REFCOUNT_CFG 0x140
+#define CORE_CSR_CDC_COARSE_CAL_CFG 0x144
+#define CORE_CDC_OFFSET_CFG 0x14C
+#define CORE_CSR_CDC_DELAY_CFG 0x150
+#define CORE_CDC_SLAVE_DDA_CFG 0x160
+#define CORE_CSR_CDC_STATUS0 0x164
+#define CORE_CALIBRATION_DONE BIT(0)
+
+#define CORE_CDC_ERROR_CODE_MASK 0x7000000
+
+#define CORE_CSR_CDC_GEN_CFG 0x178
+#define CORE_CDC_SWITCH_BYPASS_OFF BIT(0)
+#define CORE_CDC_SWITCH_RC_EN BIT(1)
+
+#define CORE_CDC_T4_DLY_SEL BIT(0)
+#define CORE_CMDIN_RCLK_EN BIT(1)
+#define CORE_START_CDC_TRAFFIC BIT(6)
+
+#define CORE_PWRSAVE_DLL BIT(3)
+
+#define DDR_CONFIG_POR_VAL 0x80040873
+
+
+#define INVALID_TUNING_PHASE -1
+#define SDHCI_MSM_MIN_CLOCK 400000
+#define CORE_FREQ_100MHZ (100 * 1000 * 1000)
+
+#define CDR_SELEXT_SHIFT 20
+#define CDR_SELEXT_MASK (0xf << CDR_SELEXT_SHIFT)
+#define CMUX_SHIFT_PHASE_SHIFT 24
+#define CMUX_SHIFT_PHASE_MASK (7 << CMUX_SHIFT_PHASE_SHIFT)
+
+#define MSM_MMC_AUTOSUSPEND_DELAY_MS 50
+
+/* Timeout value to avoid infinite waiting for pwr_irq */
+#define MSM_PWR_IRQ_TIMEOUT_MS 5000
+
+/* Max load for eMMC Vdd-io supply */
+#define MMC_VQMMC_MAX_LOAD_UA 325000
+
+#define msm_bayhub_host_readl(msm_bayhub_host, host, offset) \
+ msm_bayhub_host->var_ops->msm_bayhub_readl_relaxed(host, offset)
+
+#define msm_bayhub_host_writel(msm_bayhub_host, val, host, offset) \
+ msm_bayhub_host->var_ops->msm_bayhub_writel_relaxed(val, host, offset)
+
+/* CQHCI vendor specific registers */
+#define CQHCI_VENDOR_CFG1 0xA00
+#define CQHCI_VENDOR_DIS_RST_ON_CQ_EN (0x3 << 13)
+
+#define TUNING_PHASE_SIZE 11
+#define GGC_CFG_DATA {0x07000000, 0x07364022, 0x01015412, 0x01062400,\
+ 0x10400076, 0x00025432, 0x01046076, 0x62011000,\
+ 0x30503106, 0x64141711, 0x10057513, 0x00336200,\
+ 0x00020006, 0x40000400, 0x12200310, 0x3A314177}
+
+struct ggc_bus_mode_cfg_t {
+ u32 tx_selb_tb[TUNING_PHASE_SIZE];
+ u32 all_selb_tb[TUNING_PHASE_SIZE];
+ u32 tx_selb_failed_history;
+ int bus_mode;
+ int default_sela;
+ int default_selb;
+ u32 default_delaycode;
+ u32 dll_voltage_unlock_cnt[4];
+ u32 max_delaycode;
+ u32 min_delaycode;
+ u32 delaycode_narrowdown_index;
+ u32 fail_phase;
+};
+
+enum tuning_stat_et {
+ NO_TUNING = 0,
+ OUTPUT_PASS_TYPE = 1,
+ SET_PHASE_FAIL_TYPE = 2,
+ TUNING_FAIL_TYPE = 3,
+ READ_STATUS_FAIL_TYPE = 4,
+ TUNING_CMD7_TIMEOUT = 5,
+ RETUNING_CASE = 6,
+};
+
+
+struct t_gg_reg_strt {
+ u32 ofs;
+ u32 mask;
+ u32 value;
+};
+
+struct rl_bit_lct {
+ u8 bits;
+ u8 rl_bits;
+};
+
+struct chk_type_t {
+ u8 right_valid:1;
+ u8 first_valid:1;
+ u8 record_valid:1;
+ u8 reserved:5;
+};
+
+static const char *const op_dbg_str[] = {
+ "no tuning",
+ "pass",
+ "set_phase_fail",
+ "tuning fail",
+ "read status fail",
+ "tuning CMD7 timeout",
+ "retuning case"
+};
+
+struct ggc_platform_t {
+ struct ggc_bus_mode_cfg_t sdr50;
+ struct ggc_bus_mode_cfg_t sdr104;
+ struct ggc_bus_mode_cfg_t *cur_bus_mode;
+
+ struct t_gg_reg_strt pha_stas_rx_low32;
+ struct t_gg_reg_strt pha_stas_rx_high32;
+ struct t_gg_reg_strt pha_stas_tx_low32;
+ struct t_gg_reg_strt pha_stas_tx_high32;
+ struct t_gg_reg_strt dll_sela_after_mask;
+ struct t_gg_reg_strt dll_selb_after_mask;
+
+ struct t_gg_reg_strt dll_delay_100m_backup;
+ struct t_gg_reg_strt dll_delay_200m_backup;
+
+ struct t_gg_reg_strt dll_sela_100m_cfg;
+ struct t_gg_reg_strt dll_sela_200m_cfg;
+ struct t_gg_reg_strt dll_selb_100m_cfg;
+ struct t_gg_reg_strt dll_selb_200m_cfg;
+ struct t_gg_reg_strt dll_selb_100m_cfg_en;
+ struct t_gg_reg_strt dll_selb_200m_cfg_en;
+ struct t_gg_reg_strt internl_tuning_en_100m;
+ struct t_gg_reg_strt internl_tuning_en_200m;
+ struct t_gg_reg_strt cmd19_cnt_cfg;
+
+ struct t_gg_reg_strt inject_failure_for_tuning_enable_cfg;
+ struct t_gg_reg_strt inject_failure_for_200m_tuning_cfg;
+ struct t_gg_reg_strt inject_failure_for_100m_tuning_cfg;
+
+ int def_sela_100m;
+ int def_sela_200m;
+ int def_selb_100m;
+ int def_selb_200m;
+
+ u32 _gg_reg_cur[16];
+ u8 _cur_read_buf[512];
+
+ bool dll_unlock_reinit_flg;
+ u8 driver_strength_reinit_flg;
+ bool tuning_cmd7_timeout_reinit_flg;
+ u32 tuning_cmd7_timeout_reinit_cnt;
+ u32 ggc_cur_sela;
+ bool selx_tuning_done_flag;
+ u32 ggc_cmd_tx_selb_failed_range;
+ int ggc_sw_selb_tuning_first_selb;
+ enum tuning_stat_et ggc_sela_tuning_result[11];
+ int dll_voltage_scan_map[4];
+ int cur_dll_voltage_idx;
+ int sdr50_notuning_sela_inject_flag;
+ int sdr50_notuning_crc_error_flag;
+ u32 sdr50_notuning_sela_rx_inject;
+ u32 bh201_sdr50_sela_sw_inject;
+ u32 bh201_sdr50_selb_hw_inject;
+ u32 bh201_sdr104_selb_hw_inject;
+ u32 bh201_drive_strength;
+ bool tuning_in_progress;
+ int bh201_used;
+ int pwr_gpio; /* External power enable pin for Redriver IC */
+ int det_gpio;
+};
+
+struct sdhci_msm_bayhub_offset {
+ u32 core_hc_mode;
+ u32 core_mci_data_cnt;
+ u32 core_mci_status;
+ u32 core_mci_fifo_cnt;
+ u32 core_mci_version;
+ u32 core_generics;
+ u32 core_testbus_config;
+ u32 core_testbus_sel2_bit;
+ u32 core_testbus_ena;
+ u32 core_testbus_sel2;
+ u32 core_pwrctl_status;
+ u32 core_pwrctl_mask;
+ u32 core_pwrctl_clear;
+ u32 core_pwrctl_ctl;
+ u32 core_sdcc_debug_reg;
+ u32 core_dll_config;
+ u32 core_dll_status;
+ u32 core_vendor_spec;
+ u32 core_vendor_spec_adma_err_addr0;
+ u32 core_vendor_spec_adma_err_addr1;
+ u32 core_vendor_spec_func2;
+ u32 core_vendor_spec_capabilities0;
+ u32 core_ddr_200_cfg;
+ u32 core_vendor_spec3;
+ u32 core_dll_config_2;
+ u32 core_dll_config_3;
+ u32 core_ddr_config_old; /* Applicable to sdcc minor ver < 0x49 */
+ u32 core_ddr_config;
+ u32 core_dll_usr_ctl; /* Present on SDCC5.1 onwards */
+};
+
+static const struct sdhci_msm_bayhub_offset sdhci_msm_bayhub_v5_offset = {
+ .core_mci_data_cnt = 0x35c,
+ .core_mci_status = 0x324,
+ .core_mci_fifo_cnt = 0x308,
+ .core_mci_version = 0x318,
+ .core_generics = 0x320,
+ .core_testbus_config = 0x32c,
+ .core_testbus_sel2_bit = 3,
+ .core_testbus_ena = (1 << 31),
+ .core_testbus_sel2 = (1 << 3),
+ .core_pwrctl_status = 0x240,
+ .core_pwrctl_mask = 0x244,
+ .core_pwrctl_clear = 0x248,
+ .core_pwrctl_ctl = 0x24c,
+ .core_sdcc_debug_reg = 0x358,
+ .core_dll_config = 0x200,
+ .core_dll_status = 0x208,
+ .core_vendor_spec = 0x20c,
+ .core_vendor_spec_adma_err_addr0 = 0x214,
+ .core_vendor_spec_adma_err_addr1 = 0x218,
+ .core_vendor_spec_func2 = 0x210,
+ .core_vendor_spec_capabilities0 = 0x21c,
+ .core_ddr_200_cfg = 0x224,
+ .core_vendor_spec3 = 0x250,
+ .core_dll_config_2 = 0x254,
+ .core_dll_config_3 = 0x258,
+ .core_ddr_config = 0x25c,
+ .core_dll_usr_ctl = 0x388,
+};
+
+static const struct sdhci_msm_bayhub_offset sdhci_msm_bayhub_mci_offset = {
+ .core_hc_mode = 0x78,
+ .core_mci_data_cnt = 0x30,
+ .core_mci_status = 0x34,
+ .core_mci_fifo_cnt = 0x44,
+ .core_mci_version = 0x050,
+ .core_generics = 0x70,
+ .core_testbus_config = 0x0cc,
+ .core_testbus_sel2_bit = 4,
+ .core_testbus_ena = (1 << 3),
+ .core_testbus_sel2 = (1 << 4),
+ .core_pwrctl_status = 0xdc,
+ .core_pwrctl_mask = 0xe0,
+ .core_pwrctl_clear = 0xe4,
+ .core_pwrctl_ctl = 0xe8,
+ .core_sdcc_debug_reg = 0x124,
+ .core_dll_config = 0x100,
+ .core_dll_status = 0x108,
+ .core_vendor_spec = 0x10c,
+ .core_vendor_spec_adma_err_addr0 = 0x114,
+ .core_vendor_spec_adma_err_addr1 = 0x118,
+ .core_vendor_spec_func2 = 0x110,
+ .core_vendor_spec_capabilities0 = 0x11c,
+ .core_ddr_200_cfg = 0x184,
+ .core_vendor_spec3 = 0x1b0,
+ .core_dll_config_2 = 0x1b4,
+ .core_ddr_config_old = 0x1b8,
+ .core_ddr_config = 0x1bc,
+};
+
+struct sdhci_msm_bayhub_variant_ops {
+ u32 (*msm_bayhub_readl_relaxed)(struct sdhci_host *host, u32 offset);
+ void (*msm_bayhub_writel_relaxed)(u32 val, struct sdhci_host *host,
+ u32 offset);
+};
+
+/*
+ * From V5, register spaces have changed. Wrap this info in a structure
+ * and choose the data_structure based on version info mentioned in DT.
+ */
+struct sdhci_msm_bayhub_variant_info {
+ bool mci_removed;
+ bool restore_dll_config;
+ bool uses_tassadar_dll;
+ const struct sdhci_msm_bayhub_variant_ops *var_ops;
+ const struct sdhci_msm_bayhub_offset *offset;
+};
+
+struct sdhci_msm_bayhub_host {
+ struct platform_device *pdev;
+ void __iomem *core_mem; /* MSM SDCC mapped address */
+ int pwr_irq; /* power irq */
+ struct clk *bus_clk; /* SDHC bus voter clock */
+ struct clk *xo_clk; /* TCXO clk needed for FLL feature of cm_dll*/
+ struct clk_bulk_data bulk_clks[4]; /* core, iface, cal, sleep clocks */
+ unsigned long clk_rate;
+ struct mmc_host *mmc;
+ struct opp_table *opp_table;
+ bool has_opp_table;
+ bool use_14lpp_dll_reset;
+ bool tuning_done;
+ bool calibration_done;
+ u8 saved_tuning_phase;
+ bool use_cdclp533;
+ u32 curr_pwr_state;
+ u32 curr_io_level;
+ wait_queue_head_t pwr_irq_wait;
+ bool pwr_irq_flag;
+ u32 caps_0;
+ bool mci_removed;
+ bool restore_dll_config;
+ const struct sdhci_msm_bayhub_variant_ops *var_ops;
+ const struct sdhci_msm_bayhub_offset *offset;
+ bool use_cdr;
+ u32 transfer_mode;
+ bool updated_ddr_cfg;
+ bool uses_tassadar_dll;
+ u32 dll_config;
+ u32 ddr_config;
+ bool vqmmc_enabled;
+ struct ggc_platform_t ggc;
+};
+
+static const struct sdhci_msm_bayhub_offset *sdhci_priv_msm_bayhub_offset(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ return msm_bayhub_host->offset;
+}
+
+/*
+ * APIs to read/write to vendor specific registers which were there in the
+ * core_mem region before MCI was removed.
+ */
+static u32 sdhci_msm_bayhub_mci_variant_readl_relaxed(struct sdhci_host *host,
+ u32 offset)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ return readl_relaxed(msm_bayhub_host->core_mem + offset);
+}
+
+static u32 sdhci_msm_bayhub_v5_variant_readl_relaxed(struct sdhci_host *host,
+ u32 offset)
+{
+ return readl_relaxed(host->ioaddr + offset);
+}
+
+static void sdhci_msm_bayhub_mci_variant_writel_relaxed(u32 val,
+ struct sdhci_host *host, u32 offset)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ writel_relaxed(val, msm_bayhub_host->core_mem + offset);
+}
+
+static void sdhci_msm_bayhub_v5_variant_writel_relaxed(u32 val,
+ struct sdhci_host *host, u32 offset)
+{
+ writel_relaxed(val, host->ioaddr + offset);
+}
+
+static unsigned int msm_bayhub_get_clock_mult_for_bus_mode(struct sdhci_host *host)
+{
+ struct mmc_ios ios = host->mmc->ios;
+ /*
+ * The SDHC requires internal clock frequency to be double the
+ * actual clock that will be set for DDR mode. The controller
+ * uses the faster clock(100/400MHz) for some of its parts and
+ * send the actual required clock (50/200MHz) to the card.
+ */
+ if (ios.timing == MMC_TIMING_UHS_DDR50 ||
+ ios.timing == MMC_TIMING_MMC_DDR52 ||
+ ios.timing == MMC_TIMING_MMC_HS400 ||
+ host->flags & SDHCI_HS400_TUNING)
+ return 2;
+ return 1;
+}
+
+static void msm_bayhub_set_clock_rate_for_bus_mode(struct sdhci_host *host,
+ unsigned int clock)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct mmc_ios curr_ios = host->mmc->ios;
+ struct clk *core_clk = msm_bayhub_host->bulk_clks[0].clk;
+ unsigned long achieved_rate;
+ unsigned int desired_rate;
+ unsigned int mult;
+ int rc;
+
+ mult = msm_bayhub_get_clock_mult_for_bus_mode(host);
+ desired_rate = clock * mult;
+ rc = dev_pm_opp_set_rate(mmc_dev(host->mmc), desired_rate);
+ if (rc) {
+ pr_err("%s: Failed to set clock at rate %u at timing %d\n",
+ mmc_hostname(host->mmc), desired_rate, curr_ios.timing);
+ return;
+ }
+
+ /*
+ * Qualcomm clock drivers by default round clock _up_ if they can't
+ * make the requested rate. This is not good for SD. Yell if we
+ * encounter it.
+ */
+ achieved_rate = clk_get_rate(core_clk);
+ if (achieved_rate > desired_rate)
+ pr_warn("%s: Card appears overclocked; req %u Hz, actual %lu Hz\n",
+ mmc_hostname(host->mmc), desired_rate, achieved_rate);
+ host->mmc->actual_clock = achieved_rate / mult;
+
+ /* Stash the rate we requested to use in sdhci_msm_bayhub_runtime_resume() */
+ msm_bayhub_host->clk_rate = desired_rate;
+
+ pr_debug("%s: Setting clock at rate %lu at timing %d\n",
+ mmc_hostname(host->mmc), achieved_rate, curr_ios.timing);
+}
+
+/* Platform specific tuning */
+static inline int msm_bayhub_dll_poll_ck_out_en(struct sdhci_host *host, u8 poll)
+{
+ u32 wait_cnt = 50;
+ u8 ck_out_en;
+ struct mmc_host *mmc = host->mmc;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ sdhci_priv_msm_bayhub_offset(host);
+
+ /* Poll for CK_OUT_EN bit. max. poll time = 50us */
+ ck_out_en = !!(readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config) & CORE_CK_OUT_EN);
+
+ while (ck_out_en != poll) {
+ if (--wait_cnt == 0) {
+ dev_err(mmc_dev(mmc), "%s: CK_OUT_EN bit is not %d\n",
+ mmc_hostname(mmc), poll);
+ return -ETIMEDOUT;
+ }
+ udelay(1);
+
+ ck_out_en = !!(readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config) & CORE_CK_OUT_EN);
+ }
+
+ return 0;
+}
+
+static int msm_bayhub_config_cm_dll_phase(struct sdhci_host *host, u8 phase)
+{
+ int rc;
+ static const u8 grey_coded_phase_table[] = {
+ 0x0, 0x1, 0x3, 0x2, 0x6, 0x7, 0x5, 0x4,
+ 0xc, 0xd, 0xf, 0xe, 0xa, 0xb, 0x9, 0x8
+ };
+ unsigned long flags;
+ u32 config;
+ struct mmc_host *mmc = host->mmc;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ sdhci_priv_msm_bayhub_offset(host);
+
+ if (phase > 0xf)
+ return -EINVAL;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config &= ~(CORE_CDR_EN | CORE_CK_OUT_EN);
+ config |= (CORE_CDR_EXT_EN | CORE_DLL_EN);
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+
+ /* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '0' */
+ rc = msm_bayhub_dll_poll_ck_out_en(host, 0);
+ if (rc)
+ goto err_out;
+
+ /*
+ * Write the selected DLL clock output phase (0 ... 15)
+ * to CDR_SELEXT bit field of DLL_CONFIG register.
+ */
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config &= ~CDR_SELEXT_MASK;
+ config |= grey_coded_phase_table[phase] << CDR_SELEXT_SHIFT;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config |= CORE_CK_OUT_EN;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+
+ /* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '1' */
+ rc = msm_bayhub_dll_poll_ck_out_en(host, 1);
+ if (rc)
+ goto err_out;
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config |= CORE_CDR_EN;
+ config &= ~CORE_CDR_EXT_EN;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+ goto out;
+
+err_out:
+ dev_err(mmc_dev(mmc), "%s: Failed to set DLL phase: %d\n",
+ mmc_hostname(mmc), phase);
+out:
+ spin_unlock_irqrestore(&host->lock, flags);
+ return rc;
+}
+
+/*
+ * Find out the greatest range of consecuitive selected
+ * DLL clock output phases that can be used as sampling
+ * setting for SD3.0 UHS-I card read operation (in SDR104
+ * timing mode) or for eMMC4.5 card read operation (in
+ * HS400/HS200 timing mode).
+ * Select the 3/4 of the range and configure the DLL with the
+ * selected DLL clock output phase.
+ */
+
+static int msm_bayhub_find_most_appropriate_phase(struct sdhci_host *host,
+ u8 *phase_table, u8 total_phases)
+{
+ int ret;
+ u8 ranges[MAX_PHASES][MAX_PHASES] = { {0}, {0} };
+ u8 phases_per_row[MAX_PHASES] = { 0 };
+ int row_index = 0, col_index = 0, selected_row_index = 0, curr_max = 0;
+ int i, cnt, phase_0_raw_index = 0, phase_15_raw_index = 0;
+ bool phase_0_found = false, phase_15_found = false;
+ struct mmc_host *mmc = host->mmc;
+
+ if (!total_phases || (total_phases > MAX_PHASES)) {
+ dev_err(mmc_dev(mmc), "%s: Invalid argument: total_phases=%d\n",
+ mmc_hostname(mmc), total_phases);
+ return -EINVAL;
+ }
+
+ for (cnt = 0; cnt < total_phases; cnt++) {
+ ranges[row_index][col_index] = phase_table[cnt];
+ phases_per_row[row_index] += 1;
+ col_index++;
+
+ if ((cnt + 1) == total_phases) {
+ continue;
+ /* check if next phase in phase_table is consecutive or not */
+ } else if ((phase_table[cnt] + 1) != phase_table[cnt + 1]) {
+ row_index++;
+ col_index = 0;
+ }
+ }
+
+ if (row_index >= MAX_PHASES)
+ return -EINVAL;
+
+ /* Check if phase-0 is present in first valid window? */
+ if (!ranges[0][0]) {
+ phase_0_found = true;
+ phase_0_raw_index = 0;
+ /* Check if cycle exist between 2 valid windows */
+ for (cnt = 1; cnt <= row_index; cnt++) {
+ if (phases_per_row[cnt]) {
+ for (i = 0; i < phases_per_row[cnt]; i++) {
+ if (ranges[cnt][i] == 15) {
+ phase_15_found = true;
+ phase_15_raw_index = cnt;
+ break;
+ }
+ }
+ }
+ }
+ }
+
+ /* If 2 valid windows form cycle then merge them as single window */
+ if (phase_0_found && phase_15_found) {
+ /* number of phases in raw where phase 0 is present */
+ u8 phases_0 = phases_per_row[phase_0_raw_index];
+ /* number of phases in raw where phase 15 is present */
+ u8 phases_15 = phases_per_row[phase_15_raw_index];
+
+ if (phases_0 + phases_15 >= MAX_PHASES)
+ /*
+ * If there are more than 1 phase windows then total
+ * number of phases in both the windows should not be
+ * more than or equal to MAX_PHASES.
+ */
+ return -EINVAL;
+
+ /* Merge 2 cyclic windows */
+ i = phases_15;
+ for (cnt = 0; cnt < phases_0; cnt++) {
+ ranges[phase_15_raw_index][i] =
+ ranges[phase_0_raw_index][cnt];
+ if (++i >= MAX_PHASES)
+ break;
+ }
+
+ phases_per_row[phase_0_raw_index] = 0;
+ phases_per_row[phase_15_raw_index] = phases_15 + phases_0;
+ }
+
+ for (cnt = 0; cnt <= row_index; cnt++) {
+ if (phases_per_row[cnt] > curr_max) {
+ curr_max = phases_per_row[cnt];
+ selected_row_index = cnt;
+ }
+ }
+
+ i = (curr_max * 3) / 4;
+ if (i)
+ i--;
+
+ ret = ranges[selected_row_index][i];
+
+ if (ret >= MAX_PHASES) {
+ ret = -EINVAL;
+ dev_err(mmc_dev(mmc), "%s: Invalid phase selected=%d\n",
+ mmc_hostname(mmc), ret);
+ }
+
+ return ret;
+}
+
+static inline void msm_bayhub_cm_dll_set_freq(struct sdhci_host *host)
+{
+ u32 mclk_freq = 0, config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ sdhci_priv_msm_bayhub_offset(host);
+
+ /* Program the MCLK value to MCLK_FREQ bit field */
+ if (host->clock <= 112000000)
+ mclk_freq = 0;
+ else if (host->clock <= 125000000)
+ mclk_freq = 1;
+ else if (host->clock <= 137000000)
+ mclk_freq = 2;
+ else if (host->clock <= 150000000)
+ mclk_freq = 3;
+ else if (host->clock <= 162000000)
+ mclk_freq = 4;
+ else if (host->clock <= 175000000)
+ mclk_freq = 5;
+ else if (host->clock <= 187000000)
+ mclk_freq = 6;
+ else if (host->clock <= 200000000)
+ mclk_freq = 7;
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config &= ~CMUX_SHIFT_PHASE_MASK;
+ config |= mclk_freq << CMUX_SHIFT_PHASE_SHIFT;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+}
+
+/* Initialize the DLL (Programmable Delay Line) */
+static int msm_bayhub_init_cm_dll(struct sdhci_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ int wait_cnt = 50;
+ unsigned long flags, xo_clk = 0;
+ u32 config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ if (msm_bayhub_host->use_14lpp_dll_reset && !IS_ERR_OR_NULL(msm_bayhub_host->xo_clk))
+ xo_clk = clk_get_rate(msm_bayhub_host->xo_clk);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ /*
+ * Make sure that clock is always enabled when DLL
+ * tuning is in progress. Keeping PWRSAVE ON may
+ * turn off the clock.
+ */
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ config &= ~CORE_CLK_PWRSAVE;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+
+ if (msm_bayhub_host->dll_config)
+ writel_relaxed(msm_bayhub_host->dll_config,
+ host->ioaddr + msm_bayhub_offset->core_dll_config);
+
+ if (msm_bayhub_host->use_14lpp_dll_reset) {
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config &= ~CORE_CK_OUT_EN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ config |= CORE_DLL_CLOCK_DISABLE;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ }
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_DLL_RST;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_DLL_PDN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ if (!msm_bayhub_host->dll_config)
+ msm_bayhub_cm_dll_set_freq(host);
+
+ if (msm_bayhub_host->use_14lpp_dll_reset &&
+ !IS_ERR_OR_NULL(msm_bayhub_host->xo_clk)) {
+ u32 mclk_freq = 0;
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ config &= CORE_FLL_CYCLE_CNT;
+ if (config)
+ mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 8),
+ xo_clk);
+ else
+ mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 4),
+ xo_clk);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ config &= ~(0xFF << 10);
+ config |= mclk_freq << 10;
+
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ /* wait for 5us before enabling DLL clock */
+ udelay(5);
+ }
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config &= ~CORE_DLL_RST;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config &= ~CORE_DLL_PDN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ if (msm_bayhub_host->use_14lpp_dll_reset) {
+ if (!msm_bayhub_host->dll_config)
+ msm_bayhub_cm_dll_set_freq(host);
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ config &= ~CORE_DLL_CLOCK_DISABLE;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config_2);
+ }
+
+ /*
+ * Configure DLL user control register to enable DLL status.
+ * This setting is applicable to SDCC v5.1 onwards only.
+ */
+ if (msm_bayhub_host->uses_tassadar_dll) {
+ config = DLL_USR_CTL_POR_VAL | FINE_TUNE_MODE_EN |
+ ENABLE_DLL_LOCK_STATUS | BIAS_OK_SIGNAL;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_usr_ctl);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config_3);
+ config &= ~0xFF;
+ if (msm_bayhub_host->clk_rate < 150000000)
+ config |= DLL_CONFIG_3_LOW_FREQ_VAL;
+ else
+ config |= DLL_CONFIG_3_HIGH_FREQ_VAL;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config_3);
+ }
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_DLL_EN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_CK_OUT_EN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ /* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */
+ while (!(readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_status) &
+ CORE_DLL_LOCK)) {
+ /* max. wait for 50us sec for LOCK bit to be set */
+ if (--wait_cnt == 0) {
+ dev_err(mmc_dev(mmc), "%s: DLL failed to LOCK\n",
+ mmc_hostname(mmc));
+ spin_unlock_irqrestore(&host->lock, flags);
+ return -ETIMEDOUT;
+ }
+ udelay(1);
+ }
+
+ spin_unlock_irqrestore(&host->lock, flags);
+ return 0;
+}
+
+static void msm_bayhub_hc_select_default(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ u32 config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ if (!msm_bayhub_host->use_cdclp533) {
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec3);
+ config &= ~CORE_PWRSAVE_DLL;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec3);
+ }
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ config &= ~CORE_HC_MCLK_SEL_MASK;
+ config |= CORE_HC_MCLK_SEL_DFLT;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+
+ /*
+ * Disable HC_SELECT_IN to be able to use the UHS mode select
+ * configuration from Host Control2 register for all other
+ * modes.
+ * Write 0 to HC_SELECT_IN and HC_SELECT_IN_EN field
+ * in VENDOR_SPEC_FUNC
+ */
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ config &= ~CORE_HC_SELECT_IN_EN;
+ config &= ~CORE_HC_SELECT_IN_MASK;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+
+ /*
+ * Make sure above writes impacting free running MCLK are completed
+ * before changing the clk_rate at GCC.
+ */
+ wmb();
+}
+
+static void msm_bayhub_hc_select_hs400(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct mmc_ios ios = host->mmc->ios;
+ u32 config, dll_lock;
+ int rc;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ /* Select the divided clock (free running MCLK/2) */
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ config &= ~CORE_HC_MCLK_SEL_MASK;
+ config |= CORE_HC_MCLK_SEL_HS400;
+
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ /*
+ * Select HS400 mode using the HC_SELECT_IN from VENDOR SPEC
+ * register
+ */
+ if ((msm_bayhub_host->tuning_done || ios.enhanced_strobe) &&
+ !msm_bayhub_host->calibration_done) {
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec);
+ config |= CORE_HC_SELECT_IN_HS400;
+ config |= CORE_HC_SELECT_IN_EN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec);
+ }
+ if (!msm_bayhub_host->clk_rate && !msm_bayhub_host->use_cdclp533) {
+ /*
+ * Poll on DLL_LOCK or DDR_DLL_LOCK bits in
+ * core_dll_status to be set. This should get set
+ * within 15 us at 200 MHz.
+ */
+ rc = readl_relaxed_poll_timeout(host->ioaddr +
+ msm_bayhub_offset->core_dll_status,
+ dll_lock,
+ (dll_lock &
+ (CORE_DLL_LOCK |
+ CORE_DDR_DLL_LOCK)), 10,
+ 1000);
+ if (rc == -ETIMEDOUT)
+ pr_err("%s: Unable to get DLL_LOCK/DDR_DLL_LOCK, dll_status: 0x%08x\n",
+ mmc_hostname(host->mmc), dll_lock);
+ }
+ /*
+ * Make sure above writes impacting free running MCLK are completed
+ * before changing the clk_rate at GCC.
+ */
+ wmb();
+}
+
+/*
+ * sdhci_msm_bayhub_hc_select_mode :- In general all timing modes are
+ * controlled via UHS mode select in Host Control2 register.
+ * eMMC specific HS200/HS400 doesn't have their respective modes
+ * defined here, hence we use these values.
+ *
+ * HS200 - SDR104 (Since they both are equivalent in functionality)
+ * HS400 - This involves multiple configurations
+ * Initially SDR104 - when tuning is required as HS200
+ * Then when switching to DDR @ 400MHz (HS400) we use
+ * the vendor specific HC_SELECT_IN to control the mode.
+ *
+ * In addition to controlling the modes we also need to select the
+ * correct input clock for DLL depending on the mode.
+ *
+ * HS400 - divided clock (free running MCLK/2)
+ * All other modes - default (free running MCLK)
+ */
+static void sdhci_msm_bayhub_hc_select_mode(struct sdhci_host *host)
+{
+ struct mmc_ios ios = host->mmc->ios;
+
+ if (ios.timing == MMC_TIMING_MMC_HS400 ||
+ host->flags & SDHCI_HS400_TUNING)
+ msm_bayhub_hc_select_hs400(host);
+ else
+ msm_bayhub_hc_select_default(host);
+}
+
+static int sdhci_msm_bayhub_cdclp533_calibration(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ u32 config, calib_done;
+ int ret;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+ /*
+ * Retuning in HS400 (DDR mode) will fail, just reset the
+ * tuning block and restore the saved tuning phase.
+ */
+ ret = msm_bayhub_init_cm_dll(host);
+ if (ret)
+ goto out;
+
+ /* Set the selected phase in delay line hw block */
+ ret = msm_bayhub_config_cm_dll_phase(host, msm_bayhub_host->saved_tuning_phase);
+ if (ret)
+ goto out;
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config);
+ config |= CORE_CMD_DAT_TRACK_SEL;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+ config &= ~CORE_CDC_T4_DLY_SEL;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+ config &= ~CORE_CDC_SWITCH_BYPASS_OFF;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+ config |= CORE_CDC_SWITCH_RC_EN;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_GEN_CFG);
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+ config &= ~CORE_START_CDC_TRAFFIC;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+
+ /* Perform CDC Register Initialization Sequence */
+
+ writel_relaxed(0x11800EC, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+ writel_relaxed(0x3011111, host->ioaddr + CORE_CSR_CDC_CTLR_CFG1);
+ writel_relaxed(0x1201000, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+ writel_relaxed(0x4, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG1);
+ writel_relaxed(0xCB732020, host->ioaddr + CORE_CSR_CDC_REFCOUNT_CFG);
+ writel_relaxed(0xB19, host->ioaddr + CORE_CSR_CDC_COARSE_CAL_CFG);
+ writel_relaxed(0x4E2, host->ioaddr + CORE_CSR_CDC_DELAY_CFG);
+ writel_relaxed(0x0, host->ioaddr + CORE_CDC_OFFSET_CFG);
+ writel_relaxed(0x16334, host->ioaddr + CORE_CDC_SLAVE_DDA_CFG);
+
+ /* CDC HW Calibration */
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+ config |= CORE_SW_TRIG_FULL_CALIB;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+ config &= ~CORE_SW_TRIG_FULL_CALIB;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+ config |= CORE_HW_AUTOCAL_ENA;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CTLR_CFG0);
+
+ config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+ config |= CORE_TIMER_ENA;
+ writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_CAL_TIMER_CFG0);
+
+ ret = readl_relaxed_poll_timeout(host->ioaddr + CORE_CSR_CDC_STATUS0,
+ calib_done,
+ (calib_done & CORE_CALIBRATION_DONE),
+ 1, 50);
+
+ if (ret == -ETIMEDOUT) {
+ pr_err("%s: %s: CDC calibration was not completed\n",
+ mmc_hostname(host->mmc), __func__);
+ goto out;
+ }
+
+ ret = readl_relaxed(host->ioaddr + CORE_CSR_CDC_STATUS0)
+ & CORE_CDC_ERROR_CODE_MASK;
+ if (ret) {
+ pr_err("%s: %s: CDC error code %d\n",
+ mmc_hostname(host->mmc), __func__, ret);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+ config |= CORE_START_CDC_TRAFFIC;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_ddr_200_cfg);
+out:
+ pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+ __func__, ret);
+ return ret;
+}
+
+static int sdhci_msm_bayhub_cm_dll_sdc4_calibration(struct sdhci_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+ u32 dll_status, config, ddr_cfg_offset;
+ int ret;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ sdhci_priv_msm_bayhub_offset(host);
+
+ pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+ /*
+ * Currently the core_ddr_config register defaults to desired
+ * configuration on reset. Currently reprogramming the power on
+ * reset (POR) value in case it might have been modified by
+ * bootloaders. In the future, if this changes, then the desired
+ * values will need to be programmed appropriately.
+ */
+ if (msm_bayhub_host->updated_ddr_cfg)
+ ddr_cfg_offset = msm_bayhub_offset->core_ddr_config;
+ else
+ ddr_cfg_offset = msm_bayhub_offset->core_ddr_config_old;
+ writel_relaxed(msm_bayhub_host->ddr_config, host->ioaddr + ddr_cfg_offset);
+
+ if (mmc->ios.enhanced_strobe) {
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_ddr_200_cfg);
+ config |= CORE_CMDIN_RCLK_EN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_ddr_200_cfg);
+ }
+
+ config = readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config_2);
+ config |= CORE_DDR_CAL_EN;
+ writel_relaxed(config, host->ioaddr + msm_bayhub_offset->core_dll_config_2);
+
+ ret = readl_relaxed_poll_timeout(host->ioaddr +
+ msm_bayhub_offset->core_dll_status,
+ dll_status,
+ (dll_status & CORE_DDR_DLL_LOCK),
+ 10, 1000);
+
+ if (ret == -ETIMEDOUT) {
+ pr_err("%s: %s: CM_DLL_SDC4 calibration was not completed\n",
+ mmc_hostname(host->mmc), __func__);
+ goto out;
+ }
+
+ /*
+ * Set CORE_PWRSAVE_DLL bit in CORE_VENDOR_SPEC3.
+ * When MCLK is gated OFF, it is not gated for less than 0.5us
+ * and MCLK must be switched on for at-least 1us before DATA
+ * starts coming. Controllers with 14lpp and later tech DLL cannot
+ * guarantee above requirement. So PWRSAVE_DLL should not be
+ * turned on for host controllers using this DLL.
+ */
+ if (!msm_bayhub_host->use_14lpp_dll_reset) {
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec3);
+ config |= CORE_PWRSAVE_DLL;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec3);
+ }
+
+ /*
+ * Drain writebuffer to ensure above DLL calibration
+ * and PWRSAVE DLL is enabled.
+ */
+ wmb();
+out:
+ pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+ __func__, ret);
+ return ret;
+}
+
+static int sdhci_msm_bayhub_hs400_dll_calibration(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct mmc_host *mmc = host->mmc;
+ int ret;
+ u32 config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
+
+ /*
+ * Retuning in HS400 (DDR mode) will fail, just reset the
+ * tuning block and restore the saved tuning phase.
+ */
+ ret = msm_bayhub_init_cm_dll(host);
+ if (ret)
+ goto out;
+
+ if (!mmc->ios.enhanced_strobe) {
+ /* Set the selected phase in delay line hw block */
+ ret = msm_bayhub_config_cm_dll_phase(host,
+ msm_bayhub_host->saved_tuning_phase);
+ if (ret)
+ goto out;
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_CMD_DAT_TRACK_SEL;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ }
+
+ if (msm_bayhub_host->use_cdclp533)
+ ret = sdhci_msm_bayhub_cdclp533_calibration(host);
+ else
+ ret = sdhci_msm_bayhub_cm_dll_sdc4_calibration(host);
+out:
+ pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
+ __func__, ret);
+ return ret;
+}
+
+static bool sdhci_msm_bayhub_is_tuning_needed(struct sdhci_host *host)
+{
+ struct mmc_ios *ios = &host->mmc->ios;
+
+ /*
+ * Tuning is required for SDR104, HS200 and HS400 cards and
+ * if clock frequency is greater than 100MHz in these modes.
+ */
+ if (host->clock <= CORE_FREQ_100MHZ ||
+ !(ios->timing == MMC_TIMING_MMC_HS400 ||
+ ios->timing == MMC_TIMING_MMC_HS200 ||
+ ios->timing == MMC_TIMING_UHS_SDR104) ||
+ ios->enhanced_strobe)
+ return false;
+
+ return true;
+}
+
+static int sdhci_msm_bayhub_restore_sdr_dll_config(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ int ret;
+
+ /*
+ * SDR DLL comes into picture only for timing modes which needs
+ * tuning.
+ */
+ if (!sdhci_msm_bayhub_is_tuning_needed(host))
+ return 0;
+
+ /* Reset the tuning block */
+ ret = msm_bayhub_init_cm_dll(host);
+ if (ret)
+ return ret;
+
+ /* Restore the tuning block */
+ ret = msm_bayhub_config_cm_dll_phase(host, msm_bayhub_host->saved_tuning_phase);
+
+ return ret;
+}
+
+static void sdhci_msm_bayhub_set_cdr(struct sdhci_host *host, bool enable)
+{
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ sdhci_priv_msm_bayhub_offset(host);
+ u32 config, oldconfig = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = oldconfig;
+ if (enable) {
+ config |= CORE_CDR_EN;
+ config &= ~CORE_CDR_EXT_EN;
+ } else {
+ config &= ~CORE_CDR_EN;
+ config |= CORE_CDR_EXT_EN;
+ }
+
+ if (config != oldconfig) {
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ }
+}
+
+static int sdhci_msm_bayhub_execute_tuning(struct mmc_host *mmc, u32 opcode)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ int tuning_seq_cnt = 10;
+ u8 phase, tuned_phases[16], tuned_phase_cnt = 0;
+ int rc;
+ struct mmc_ios ios = host->mmc->ios;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (!sdhci_msm_bayhub_is_tuning_needed(host)) {
+ msm_bayhub_host->use_cdr = false;
+ sdhci_msm_bayhub_set_cdr(host, false);
+ return 0;
+ }
+
+ /* Clock-Data-Recovery used to dynamically adjust RX sampling point */
+ msm_bayhub_host->use_cdr = true;
+
+ /*
+ * Clear tuning_done flag before tuning to ensure proper
+ * HS400 settings.
+ */
+ msm_bayhub_host->tuning_done = 0;
+
+ /*
+ * For HS400 tuning in HS200 timing requires:
+ * - select MCLK/2 in VENDOR_SPEC
+ * - program MCLK to 400MHz (or nearest supported) in GCC
+ */
+ if (host->flags & SDHCI_HS400_TUNING) {
+ sdhci_msm_bayhub_hc_select_mode(host);
+ msm_bayhub_set_clock_rate_for_bus_mode(host, ios.clock);
+ host->flags &= ~SDHCI_HS400_TUNING;
+ }
+
+retry:
+ /* First of all reset the tuning block */
+ rc = msm_bayhub_init_cm_dll(host);
+ if (rc)
+ return rc;
+
+ phase = 0;
+ do {
+ /* Set the phase in delay line hw block */
+ rc = msm_bayhub_config_cm_dll_phase(host, phase);
+ if (rc)
+ return rc;
+
+ rc = mmc_send_tuning(mmc, opcode, NULL);
+ if (!rc) {
+ /* Tuning is successful at this tuning point */
+ tuned_phases[tuned_phase_cnt++] = phase;
+ dev_dbg(mmc_dev(mmc), "%s: Found good phase = %d\n",
+ mmc_hostname(mmc), phase);
+ }
+
+ if (msm_bayhub_host->ggc.bh201_used)
+ usleep_range(1000, 1200);
+
+ } while (++phase < ARRAY_SIZE(tuned_phases));
+
+ if (tuned_phase_cnt) {
+ if (tuned_phase_cnt == ARRAY_SIZE(tuned_phases)) {
+ /*
+ * All phases valid is _almost_ as bad as no phases
+ * valid. Probably all phases are not really reliable
+ * but we didn't detect where the unreliable place is.
+ * That means we'll essentially be guessing and hoping
+ * we get a good phase. Better to try a few times.
+ */
+ dev_dbg(mmc_dev(mmc), "%s: All phases valid; try again\n",
+ mmc_hostname(mmc));
+ if (--tuning_seq_cnt) {
+ tuned_phase_cnt = 0;
+ goto retry;
+ }
+ }
+
+ rc = msm_bayhub_find_most_appropriate_phase(host, tuned_phases,
+ tuned_phase_cnt);
+ if (rc >= 0)
+ phase = rc;
+ else
+ return rc;
+
+ /*
+ * Finally set the selected phase in delay
+ * line hw block.
+ */
+ rc = msm_bayhub_config_cm_dll_phase(host, phase);
+ if (rc)
+ return rc;
+ msm_bayhub_host->saved_tuning_phase = phase;
+ dev_dbg(mmc_dev(mmc), "%s: Setting the tuning phase to %d\n",
+ mmc_hostname(mmc), phase);
+ } else {
+ if (--tuning_seq_cnt)
+ goto retry;
+ /* Tuning failed */
+ dev_dbg(mmc_dev(mmc), "%s: No tuning point found\n",
+ mmc_hostname(mmc));
+ rc = -EIO;
+ }
+
+ if (!rc)
+ msm_bayhub_host->tuning_done = true;
+ return rc;
+}
+
+static const unsigned int freqs[] = { 400000, 300000, 200000, 100000 };
+
+static void cfg_bit_2_bt(int max_bit, int tar, int *byt, int *bit)
+{
+ struct rl_bit_lct cfg_bit_map[6] = {
+ {0, 6}, {1, 5}, {2, 4},
+ {3, 2}, {4, 1}, {5, 0},
+ };
+
+ *byt = (max_bit - tar) / 6;
+ *bit = cfg_bit_map[(max_bit - tar) % 6].rl_bits;
+}
+
+static u32 cfg_read_bits_ofs_mask(u8 *cfg, struct t_gg_reg_strt *bts)
+{
+ u32 rv = 0;
+ u32 msk = bts->mask;
+ int byt = 0, bit = 0;
+ int i = 0;
+
+ do {
+ cfg_bit_2_bt(MAX_CFG_BIT_VAL, bts->ofs + i, &byt, &bit);
+ if (cfg[byt] & (1 << bit))
+ rv |= 1 << i;
+
+ i++;
+ msk >>= 1;
+ if (msk == 0)
+ break;
+ } while (1);
+ return rv;
+}
+
+static void get_default_setting(struct sdhci_host *host, u8 *data)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ vendor_host->ggc.def_sela_100m =
+ cfg_read_bits_ofs_mask(data, &vendor_host->ggc.dll_sela_100m_cfg);
+ vendor_host->ggc.def_sela_200m =
+ cfg_read_bits_ofs_mask(data, &vendor_host->ggc.dll_sela_200m_cfg);
+ vendor_host->ggc.def_selb_100m =
+ cfg_read_bits_ofs_mask(data, &vendor_host->ggc.dll_sela_100m_cfg);
+ vendor_host->ggc.def_selb_200m =
+ cfg_read_bits_ofs_mask(data, &vendor_host->ggc.dll_sela_200m_cfg);
+}
+
+static void cfg_write_bits_ofs_mask(u8 *cfg,
+ struct t_gg_reg_strt *bts, u32 w_value)
+{
+ u32 wv = w_value & bts->mask;
+ u32 msk = bts->mask;
+ int byt = 0, bit = 0;
+ int i = 0;
+
+ do {
+ cfg_bit_2_bt(MAX_CFG_BIT_VAL, bts->ofs + i, &byt, &bit);
+ if (wv & 1)
+ cfg[byt] |= (u8) (1 << bit);
+ else
+ cfg[byt] &= (u8) (~(1 << bit));
+
+ i++;
+ wv >>= 1;
+ msk >>= 1;
+ if (msk == 0)
+ break;
+ } while (1);
+}
+
+static void ram_bit_2_bt(int tar, int *byt, int *bit)
+{
+ *byt = tar / 8;
+ *bit = tar % 8;
+}
+
+static void set_gg_reg_cur_val(struct ggc_platform_t *ggc,
+ u8 *data, u8 len)
+{
+ memcpy(&ggc->_gg_reg_cur[0], data, len);
+}
+
+static void get_gg_reg_cur_val(struct ggc_platform_t *ggc,
+ u8 *data, u8 len)
+{
+ memcpy(data, &ggc->_gg_reg_cur[0], len);
+}
+
+static void get_gg_reg_def(struct sdhci_host *host, u8 *data)
+{
+ u32 gg_sw_def[16] = GGC_CFG_DATA;
+
+ memcpy(data, (u8 *)&(gg_sw_def[0]), sizeof(gg_sw_def));
+}
+
+static u32 read_ram_bits_ofs_mask(u8 *cfg, struct t_gg_reg_strt *bts)
+{
+ u32 rv = 0;
+ u32 msk = bts->mask;
+ int byt = 0, bit = 0;
+ int i = 0;
+
+ do {
+ ram_bit_2_bt(bts->ofs + i, &byt, &bit);
+ if (cfg[byt] & (1 << bit))
+ rv |= 1 << i;
+
+ i++;
+ msk >>= 1;
+ if (msk == 0)
+ break;
+
+ } while (1);
+ return rv;
+}
+
+static void ggc_dll_voltage_init(struct sdhci_host *host)
+{
+ int i = 0;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ for (i = 0; i < 4; i++) {
+ vendor_host->ggc.dll_voltage_scan_map[i] = 0;
+ vendor_host->ggc.sdr50.dll_voltage_unlock_cnt[i] = 0;
+ vendor_host->ggc.sdr104.dll_voltage_unlock_cnt[i] = 0;
+ }
+}
+
+static void ggc_chip_init(struct sdhci_host *host)
+{
+ u8 data[512] = { 0 };
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ get_gg_reg_def(host, data);
+ get_default_setting(host, data);
+ set_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+}
+
+static int driver_send_command7(struct sdhci_host *host)
+{
+ int ret = 0;
+ int err;
+ struct mmc_host *mmc = host->mmc;
+ struct mmc_command cmd = {0};
+
+ cmd.opcode = MMC_SELECT_CARD;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
+ err = mmc_wait_for_cmd(mmc, &cmd, 3);
+ if (err)
+ ret = 0;
+ else
+ ret = 1;
+
+ return ret;
+}
+
+static void driver_send_command24(struct sdhci_host *host,
+ u32 *cfg_data, int data_len)
+{
+ struct mmc_host *mmc = host->mmc;
+ struct mmc_request mrq = {0};
+ struct mmc_command cmd = { 0 };
+ struct mmc_data data = { 0 };
+ struct scatterlist sg;
+ u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
+
+ memcpy(data1, (u8 *)&(cfg_data[0]), data_len);
+ sg_init_one(&sg, data1, 512);
+
+ cmd.opcode = MMC_WRITE_BLOCK;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ data.blksz = 512;
+ data.blocks = 1;
+ data.flags = MMC_DATA_WRITE;
+ data.timeout_ns = 1000 * 1000 * 1000;
+ data.sg = &sg;
+ data.sg_len = 1;
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = NULL;
+
+ mmc_wait_for_req(mmc, &mrq);
+ kfree(data1);
+}
+
+static void bht_update_cfg(struct mmc_host *mmc_host,
+ struct mmc_card *card, u32 *cfg_data, int data_len)
+{
+ int ret = 0;
+ struct sdhci_host *host;
+
+ host = mmc_priv(mmc_host);
+ mmc_set_bus_width(mmc_host, MMC_BUS_WIDTH_4);
+ if (host->ops->reset)
+ host->ops->reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
+
+ driver_send_command7(host);
+ driver_send_command24(host, cfg_data, data_len);
+ driver_send_command7(host);
+
+ mmc_set_bus_width(mmc_host, MMC_BUS_WIDTH_1);
+}
+
+
+static void tx_selb_failed_tb_reset(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ memset(&vendor_host->ggc.sdr104.tx_selb_tb, 0xff,
+ sizeof(vendor_host->ggc.sdr104.tx_selb_tb));
+ memset(&vendor_host->ggc.sdr50.tx_selb_tb, 0xff,
+ sizeof(vendor_host->ggc.sdr50.tx_selb_tb));
+}
+
+static void all_selb_failed_tb_reset(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ memset(vendor_host->ggc.sdr104.all_selb_tb, 0xff,
+ sizeof(vendor_host->ggc.sdr104.all_selb_tb));
+ memset(vendor_host->ggc.sdr50.all_selb_tb, 0xff,
+ sizeof(vendor_host->ggc.sdr50.all_selb_tb));
+}
+
+static void tx_selb_failed_history_reset(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ vendor_host->ggc.sdr50.tx_selb_failed_history = BIT_PASS_MASK;
+ vendor_host->ggc.sdr104.tx_selb_failed_history = BIT_PASS_MASK;
+}
+
+static void ggc_reset_selx_failed_tb(struct sdhci_host *host)
+{
+ tx_selb_failed_tb_reset(host);
+ all_selb_failed_tb_reset(host);
+ tx_selb_failed_history_reset(host);
+}
+
+static void _ggc_reset_sela_tuning_result(
+ struct sdhci_msm_bayhub_host *host)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++)
+ host->ggc.ggc_sela_tuning_result[i] = NO_TUNING;
+}
+
+static void _ggc_reset_tuning_result_for_dll(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ ggc_reset_selx_failed_tb(host);
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range = BIT_PASS_MASK;
+ vendor_host->ggc.selx_tuning_done_flag = 0;
+ _ggc_reset_sela_tuning_result(vendor_host);
+}
+
+static void ggc_tuning_result_reset(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+
+ _ggc_reset_tuning_result_for_dll(host);
+
+ vendor_host->ggc.sdr50.bus_mode = SD_FNC_AM_SDR50;
+ vendor_host->ggc.sdr104.bus_mode = SD_FNC_AM_SDR104;
+ vendor_host->ggc.driver_strength_reinit_flg = 0;
+ vendor_host->ggc.cur_bus_mode = NULL;
+ vendor_host->ggc.dll_unlock_reinit_flg = 0;
+ vendor_host->ggc.tuning_cmd7_timeout_reinit_flg = 0;
+ vendor_host->ggc.tuning_cmd7_timeout_reinit_cnt = 0;
+ vendor_host->ggc.sdr50_notuning_sela_inject_flag = 1;
+ vendor_host->ggc.sdr50_notuning_crc_error_flag = 0;
+ if (vendor_host->ggc.bh201_sdr50_sela_sw_inject)
+ vendor_host->ggc.sdr50_notuning_sela_rx_inject =
+ vendor_host->ggc.bh201_sdr50_sela_sw_inject;
+ else
+ vendor_host->ggc.sdr50_notuning_sela_rx_inject = 0x47F;
+}
+
+static void bht_load_hw_inject(struct mmc_host *mmc_host,
+ struct mmc_card *card, u32 *cfg_data, int data_len,
+ u32 sel200, u32 sel100)
+{
+ struct sdhci_host *host = mmc_priv(mmc_host);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+ u32 gg_hw_inj[16] = GGC_CFG_DATA;
+
+ gg_hw_inj[1] = 0x7364032;
+
+ if (vendor_host->ggc.bh201_sdr104_selb_hw_inject)
+ gg_hw_inj[11] = vendor_host->ggc.bh201_sdr104_selb_hw_inject;
+ else
+ gg_hw_inj[11] = 0x57336200;
+
+ if (vendor_host->ggc.bh201_sdr50_selb_hw_inject)
+ gg_hw_inj[12] = vendor_host->ggc.bh201_sdr50_selb_hw_inject;
+ else
+ gg_hw_inj[12] = 0x00725777;
+
+ if (vendor_host->ggc.bh201_drive_strength)
+ gg_hw_inj[15] = vendor_host->ggc.bh201_drive_strength;
+
+ bht_update_cfg(mmc_host, card, gg_hw_inj, data_len);
+}
+
+static void bht_load(struct mmc_host *mmc_host, struct mmc_card *card)
+{
+ struct sdhci_host *host = mmc_priv(mmc_host);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host =
+ sdhci_pltfm_priv(pltfm_host);
+ u8 driver_strength_reinit_flg =
+ vendor_host->ggc.driver_strength_reinit_flg;
+ int cur_dll_voltage_idx = vendor_host->ggc.cur_dll_voltage_idx;
+ u32 i = 0;
+ u32 reg;
+ u32 gg_sw_def[16] = GGC_CFG_DATA;
+ u8 data[512];
+ static const int s_dll_voltage_cfg[4][2] = {
+ {0x30503106, 0x64141711},
+ {0x31503106, 0x64141711},
+ {0x30503106, 0x64141751},
+ {0x31503106, 0x64141751},
+ };
+
+ if (vendor_host->ggc.bh201_used) {
+ pr_debug("%s: Load BHT patch\n", mmc_hostname(mmc_host));
+
+ mmc_send_relative_addr(mmc_host, &card->rca);
+ mmc_host->card = card;
+ if (vendor_host->ggc.dll_unlock_reinit_flg) {
+ pr_debug("dll unlock reinit: idx=%d\n",
+ cur_dll_voltage_idx);
+ ggc_tuning_result_reset(host);
+ gg_sw_def[8] = s_dll_voltage_cfg[cur_dll_voltage_idx][0];
+ gg_sw_def[9] = s_dll_voltage_cfg[cur_dll_voltage_idx][1];
+ }
+ if (vendor_host->ggc.driver_strength_reinit_flg) {
+ pr_debug("%s: driver strength should be init to %d\n",
+ mmc_hostname(mmc_host), driver_strength_reinit_flg);
+ ggc_tuning_result_reset(host);
+ if (vendor_host->ggc.driver_strength_reinit_flg <= 7) {
+ gg_sw_def[15] &= 0x0f0fffff;
+ gg_sw_def[15] |= (driver_strength_reinit_flg << 28)
+ | (driver_strength_reinit_flg << 20);
+ }
+ }
+ driver_send_command7(host);
+ if (vendor_host->ggc.tuning_cmd7_timeout_reinit_flg == 0
+ && vendor_host->ggc.selx_tuning_done_flag == 0) {
+ bht_load_hw_inject(mmc_host, card, gg_sw_def,
+ sizeof(gg_sw_def), 0x3ff, 0x77f);
+ bht_update_cfg(mmc_host, card, gg_sw_def, sizeof(gg_sw_def));
+ set_gg_reg_cur_val(&vendor_host->ggc, (u8 *)gg_sw_def, sizeof(gg_sw_def));
+ } else {
+ if (vendor_host->ggc.selx_tuning_done_flag)
+ pr_debug("%s: skip load default configuration for tuning done\n",
+ mmc_hostname(mmc_host));
+ if (vendor_host->ggc.tuning_cmd7_timeout_reinit_flg) {
+ pr_debug("%s: write previous inject results to bh201 for cmd7 timeout flag is set\n",
+ mmc_hostname(mmc_host));
+ get_gg_reg_cur_val(&vendor_host->ggc, data, sizeof(gg_sw_def));
+
+ pr_debug("%s: dump config data before write to bh201\n", __func__);
+ for (i = 0; i < 128; i++) {
+ memcpy(®, data+i*sizeof(u32), sizeof(u32));
+ pr_debug("ggc_reg32[%03d]=0x%08x\n", i, reg);
+ }
+ bht_update_cfg(mmc_host, card, (u32 *)data, sizeof(data));
+ }
+ }
+ }
+}
+
+static void bh201_signal_voltage_on_off(struct sdhci_host *host, u32 on_off)
+{
+ int card_present_status = 0;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (vendor_host->ggc.bh201_used) {
+ if (gpio_is_valid(vendor_host->ggc.det_gpio)) {
+ card_present_status = gpio_get_value(vendor_host->ggc.det_gpio);
+ pr_debug("%s: detect_gpio pin %d status is %d\n",
+ mmc_hostname(host->mmc), vendor_host->ggc.det_gpio, card_present_status);
+ } else {
+ pr_err("%s: no det_gpio provided\n", mmc_hostname(host->mmc));
+ }
+
+ if (on_off) {
+ pr_debug("%s: apply bht power on patch\n", mmc_hostname(host->mmc));
+
+ ggc_dll_voltage_init(host);
+
+ ggc_chip_init(host);
+
+ if (gpio_is_valid(vendor_host->ggc.pwr_gpio)) {
+ gpio_direction_output(vendor_host->ggc.pwr_gpio, 1);
+ msleep(100);
+ pr_debug("%s: pwr_gpio pin %d status is %d\n",
+ mmc_hostname(host->mmc), vendor_host->ggc.pwr_gpio,
+ gpio_get_value(vendor_host->ggc.pwr_gpio));
+ } else {
+ pr_err("%s: no pwr_gpio provided\n", mmc_hostname(host->mmc));
+ }
+ } else {
+ pr_debug("%s: apply bht power off patch\n", mmc_hostname(host->mmc));
+
+ ggc_dll_voltage_init(host);
+
+ if (card_present_status <= 0) {
+ pr_debug("%s: clear tuning result for power off and card removed\n",
+ mmc_hostname(host->mmc));
+ ggc_tuning_result_reset(host);
+ }
+ ggc_chip_init(host);
+
+ if (gpio_is_valid(vendor_host->ggc.pwr_gpio)) {
+ gpio_direction_output(vendor_host->ggc.pwr_gpio, 0);
+ pr_debug("%s: pwr_gpio pin %d status is %d\n",
+ mmc_hostname(host->mmc), vendor_host->ggc.pwr_gpio,
+ gpio_get_value(vendor_host->ggc.pwr_gpio));
+ } else {
+ pr_err("%s: no pwr_gpio provided\n", mmc_hostname(host->mmc));
+ }
+ }
+ }
+}
+
+static void sdhci_bh201_parse(struct mmc_host *mmc_host)
+{
+ struct sdhci_host *host = mmc_priv(mmc_host);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ struct device_node *np = vendor_host->pdev->dev.of_node;
+ struct t_gg_reg_strt index_array[] = {
+ { 14, 0xffffffff, 0 }, { 46, 0xffffffff, 0 },
+ { 205, 0xffffffff, 0 }, { 237, 0xffffffff, 0 },
+ { 141, 0xf, 0 }, { 145, 0xf, 0 },
+ { 83, 0xfff, 0 }, { 95, 0xfff, 0 },
+ { 126, 0xf, 0 }, { 130, 0xf, 0 },
+ { 140, 0xf, 0 }, { 144, 0xf, 0 },
+ { 183, 0x1, 0 }, { 184, 0x1, 0 },
+ { 171, 0x1, 0 }, { 172, 0x1, 0 },
+ { 173, 0x3f, 0 }, { 357, 0x1, 0 },
+ { 93, 0x7ff, 0 }, { 81, 0x7ff, 0 },
+ };
+
+ memcpy(&vendor_host->ggc.pha_stas_rx_low32, &index_array[0],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.pha_stas_rx_high32, &index_array[1],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.pha_stas_tx_low32, &index_array[2],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.pha_stas_tx_high32, &index_array[3],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_sela_after_mask, &index_array[4],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_selb_after_mask, &index_array[5],
+ sizeof(struct t_gg_reg_strt));
+
+ memcpy(&vendor_host->ggc.dll_delay_100m_backup, &index_array[6],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_delay_200m_backup, &index_array[7],
+ sizeof(struct t_gg_reg_strt));
+
+ memcpy(&vendor_host->ggc.dll_sela_100m_cfg, &index_array[8],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_sela_200m_cfg, &index_array[9],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_selb_100m_cfg, &index_array[10],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_selb_200m_cfg, &index_array[11],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_selb_100m_cfg_en, &index_array[12],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.dll_selb_200m_cfg_en, &index_array[13],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.internl_tuning_en_100m, &index_array[14],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.internl_tuning_en_200m, &index_array[15],
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.cmd19_cnt_cfg, &index_array[16],
+ sizeof(struct t_gg_reg_strt));
+
+ memcpy(&vendor_host->ggc.inject_failure_for_tuning_enable_cfg,
+ &index_array[17], sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.inject_failure_for_200m_tuning_cfg,
+ &index_array[18], sizeof(struct t_gg_reg_strt));
+ memcpy(&vendor_host->ggc.inject_failure_for_100m_tuning_cfg,
+ &index_array[19], sizeof(struct t_gg_reg_strt));
+
+ vendor_host->ggc.bh201_drive_strength = 0;
+ vendor_host->ggc.bh201_sdr50_sela_sw_inject = 0;
+ vendor_host->ggc.bh201_sdr50_selb_hw_inject = 0;
+ vendor_host->ggc.bh201_sdr104_selb_hw_inject = 0;
+ vendor_host->ggc.bh201_used = 1;
+ host->flags |= SDHCI_SDR50_NEEDS_TUNING;
+ host->mmc_host_ops.init_card = bht_load;
+
+ if (of_find_property(np, "bh201_drive_strength", NULL))
+ of_property_read_u32_index(np, "bh201_drive_strength", 0,
+ &vendor_host->ggc.bh201_drive_strength);
+ if (of_find_property(np, "bh201_sdr50_sela_sw_inject", NULL))
+ of_property_read_u32_index(np, "bh201_sdr50_sela_sw_inject", 0,
+ &vendor_host->ggc.bh201_sdr50_sela_sw_inject);
+ if (of_find_property(np, "bh201_sdr50_selb_hw_inject", NULL))
+ of_property_read_u32_index(np, "bh201_sdr50_selb_hw_inject", 0,
+ &vendor_host->ggc.bh201_sdr50_selb_hw_inject);
+ if (of_find_property(np, "bh201_sdr104_selb_hw_inject", NULL))
+ of_property_read_u32_index(np, "bh201_sdr104_selb_hw_inject", 0,
+ &vendor_host->ggc.bh201_sdr104_selb_hw_inject);
+
+ vendor_host->ggc.pwr_gpio = of_get_named_gpio(np, "pwr-gpios", 0);
+ if (!gpio_is_valid(vendor_host->ggc.pwr_gpio))
+ dev_err(&vendor_host->pdev->dev, "no pwr-gpio provided !\n");
+ else
+ dev_info(&vendor_host->pdev->dev, "pwr-gpio provided\n");
+
+ vendor_host->ggc.det_gpio = of_get_named_gpio(np, "det-gpios", 0);
+ if (!gpio_is_valid(vendor_host->ggc.det_gpio))
+ dev_err(&vendor_host->pdev->dev, "no det-gpio provided !\n");
+ else
+ dev_info(&vendor_host->pdev->dev, "det-gpio provided\n");
+
+ if (gpio_is_valid(vendor_host->ggc.pwr_gpio)) {
+ devm_gpio_request_one(&vendor_host->pdev->dev, vendor_host->ggc.pwr_gpio,
+ GPIOF_OUT_INIT_LOW, "sprd-1-pwr");
+ pr_debug("%s: detect_gpio pin %d\n",
+ mmc_hostname(host->mmc), vendor_host->ggc.pwr_gpio);
+ } else {
+ pr_err("%s: no detect_gpio provided\n",
+ mmc_hostname(host->mmc));
+ }
+
+ if (gpio_is_valid(vendor_host->ggc.det_gpio)) {
+ devm_gpio_request_one(&vendor_host->pdev->dev, vendor_host->ggc.det_gpio,
+ GPIOF_DIR_IN, "sprd-1-det");
+ pr_debug("%s: detect_gpio pin %d\n",
+ mmc_hostname(host->mmc), vendor_host->ggc.det_gpio);
+ } else {
+ pr_err("%s: no detect_gpio provided\n",
+ mmc_hostname(host->mmc));
+ }
+}
+
+static int sd_select_driver_type(struct mmc_card *card, u8 *status)
+{
+ int card_drv_type, drive_strength, drv_type;
+ int err;
+
+ card->drive_strength = 0;
+
+ card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B;
+
+ drive_strength = mmc_select_drive_strength(card,
+ card->sw_caps.uhs_max_dtr,
+ card_drv_type, &drv_type);
+
+ if (drive_strength) {
+ err = mmc_sd_switch(card, 1, 2, drive_strength, status);
+ if (err)
+ return err;
+ if ((status[15] & 0xF) != drive_strength) {
+ pr_warn("%s: Problem setting drive strength!\n",
+ mmc_hostname(card->host));
+ return 0;
+ }
+ card->drive_strength = drive_strength;
+ }
+
+ if (drv_type)
+ mmc_set_driver_type(card->host, drv_type);
+
+ return 0;
+}
+
+/* Get host's max current setting at its current voltage */
+static u32 sd_get_host_max_current(struct mmc_host *host)
+{
+ u32 voltage, max_current;
+
+ voltage = 1 << host->ios.vdd;
+ switch (voltage) {
+ case MMC_VDD_165_195:
+ max_current = host->max_current_180;
+ break;
+ case MMC_VDD_29_30:
+ case MMC_VDD_30_31:
+ max_current = host->max_current_300;
+ break;
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
+ max_current = host->max_current_330;
+ break;
+ default:
+ max_current = 0;
+ }
+
+ return max_current;
+}
+
+static int sd_set_current_limit(struct mmc_card *card, u8 *status)
+{
+ int current_limit = SD_SET_CURRENT_NO_CHANGE;
+ int err;
+ u32 max_current;
+
+ /*
+ * Current limit switch is only defined for SDR50, SDR104, and DDR50
+ * bus speed modes. For other bus speed modes, we do not change the
+ * current limit.
+ */
+ if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) &&
+ (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) &&
+ (card->sd_bus_speed != UHS_DDR50_BUS_SPEED))
+ return 0;
+
+ /*
+ * Host has different current capabilities when operating at
+ * different voltages, so find out its max current first.
+ */
+ max_current = sd_get_host_max_current(card->host);
+
+ /*
+ * We only check host's capability here, if we set a limit that is
+ * higher than the card's maximum current, the card will be using its
+ * maximum current, e.g. if the card's maximum current is 300ma, and
+ * when we set current limit to 200ma, the card will draw 200ma, and
+ * when we set current limit to 400/600/800ma, the card will draw its
+ * maximum 300ma from the host.
+ *
+ * The above is incorrect: if we try to set a current limit that is
+ * not supported by the card, the card can rightfully error out the
+ * attempt, and remain at the default current limit. This results
+ * in a 300mA card being limited to 200mA even though the host
+ * supports 800mA. Failures seen with SanDisk 8GB UHS cards with
+ * an iMX6 host. --rmk
+ */
+ if (max_current >= 800 &&
+ card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800)
+ current_limit = SD_SET_CURRENT_LIMIT_800;
+ else if (max_current >= 600 &&
+ card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600)
+ current_limit = SD_SET_CURRENT_LIMIT_600;
+ else if (max_current >= 400 &&
+ card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400)
+ current_limit = SD_SET_CURRENT_LIMIT_400;
+ else if (max_current >= 200 &&
+ card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200)
+ current_limit = SD_SET_CURRENT_LIMIT_200;
+
+ if (current_limit != SD_SET_CURRENT_NO_CHANGE) {
+ err = mmc_sd_switch(card, 1, 3, current_limit, status);
+ if (err)
+ return err;
+
+ if (((status[15] >> 4) & 0x0F) != current_limit)
+ pr_warn("%s: Problem setting current limit!\n",
+ mmc_hostname(card->host));
+
+ }
+
+ return 0;
+}
+
+static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
+{
+ int err;
+ unsigned int timing = 0;
+
+ switch (card->sd_bus_speed) {
+ case UHS_SDR104_BUS_SPEED:
+ timing = MMC_TIMING_UHS_SDR104;
+ card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR;
+ break;
+ case UHS_DDR50_BUS_SPEED:
+ timing = MMC_TIMING_UHS_DDR50;
+ card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR;
+ break;
+ case UHS_SDR50_BUS_SPEED:
+ timing = MMC_TIMING_UHS_SDR50;
+ card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR;
+ break;
+ case UHS_SDR25_BUS_SPEED:
+ timing = MMC_TIMING_UHS_SDR25;
+ card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR;
+ break;
+ case UHS_SDR12_BUS_SPEED:
+ timing = MMC_TIMING_UHS_SDR12;
+ card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR;
+ break;
+ default:
+ return 0;
+ }
+
+ err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status);
+ if (err)
+ return err;
+
+ if ((status[16] & 0xF) != card->sd_bus_speed)
+ pr_warn("%s: Problem setting bus speed mode!\n",
+ mmc_hostname(card->host));
+ else {
+ mmc_set_timing(card->host, timing);
+ mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr);
+ }
+
+ return 0;
+}
+
+static void sd_update_bus_speed_mode(struct mmc_card *card)
+{
+ /*
+ * If the host doesn't support any of the UHS-I modes, fallback on
+ * default speed.
+ */
+ if (!mmc_host_uhs(card->host)) {
+ card->sd_bus_speed = 0;
+ return;
+ }
+
+ if ((card->host->caps & MMC_CAP_UHS_SDR104) &&
+ (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) {
+ card->sd_bus_speed = UHS_SDR104_BUS_SPEED;
+ } else if ((card->host->caps & MMC_CAP_UHS_DDR50) &&
+ (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) {
+ card->sd_bus_speed = UHS_DDR50_BUS_SPEED;
+ } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+ MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode &
+ SD_MODE_UHS_SDR50)) {
+ card->sd_bus_speed = UHS_SDR50_BUS_SPEED;
+ } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+ MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) &&
+ (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) {
+ card->sd_bus_speed = UHS_SDR25_BUS_SPEED;
+ } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 |
+ MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 |
+ MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode &
+ SD_MODE_UHS_SDR12)) {
+ card->sd_bus_speed = UHS_SDR12_BUS_SPEED;
+ }
+}
+
+static int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
+ struct mmc_command *cmd)
+{
+ struct mmc_request mrq = {};
+ int i, err = -EIO;
+
+ /*
+ * We have to resend MMC_APP_CMD for each attempt so
+ * we cannot use the retries field in mmc_command.
+ */
+ for (i = 0; i <= MMC_CMD_RETRIES; i++) {
+ err = mmc_app_cmd(host, card);
+ if (err) {
+ /* no point in retrying; no APP commands allowed */
+ if (mmc_host_is_spi(host)) {
+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
+ break;
+ }
+ continue;
+ }
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+
+ memset(cmd->resp, 0, sizeof(cmd->resp));
+ cmd->retries = 0;
+
+ mrq.cmd = cmd;
+ cmd->data = NULL;
+
+ mmc_wait_for_req(host, &mrq);
+
+ err = cmd->error;
+ if (!cmd->error)
+ break;
+
+ /* no point in retrying illegal APP commands */
+ if (mmc_host_is_spi(host)) {
+ if (cmd->resp[0] & R1_SPI_ILLEGAL_COMMAND)
+ break;
+ }
+ }
+
+ return err;
+}
+
+static int mmc_app_set_clr_card_detect(struct mmc_card *card)
+{
+ struct mmc_command cmd = {};
+
+ cmd.opcode = 42;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ return mmc_wait_for_app_cmd(card->host, card, &cmd);
+}
+
+/*
+ * UHS-I specific initialization procedure
+ */
+static int sd_init_uhs_card(struct mmc_card *card)
+{
+ int err;
+ u8 *status;
+
+ if (!(card->csd.cmdclass & CCC_SWITCH))
+ return 0;
+
+ status = kmalloc(64, GFP_KERNEL);
+ if (!status)
+ return -ENOMEM;
+
+ /* Set 4-bit bus width */
+ err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
+ if (err)
+ goto out;
+
+ mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
+
+ /*
+ * Select the bus speed mode depending on host
+ * and card capability.
+ */
+ sd_update_bus_speed_mode(card);
+
+ mmc_app_set_clr_card_detect(card);
+
+ /* Set the driver strength for the card */
+ err = sd_select_driver_type(card, status);
+ if (err)
+ goto out;
+
+ /* Set current limit for the card */
+ err = sd_set_current_limit(card, status);
+ if (err)
+ goto out;
+
+ /* Set bus speed mode of the card */
+ err = sd_set_bus_speed_mode(card, status);
+ if (err)
+ goto out;
+
+ /*
+ * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and
+ * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104.
+ */
+ if (!mmc_host_is_spi(card->host) &&
+ (card->host->ios.timing == MMC_TIMING_UHS_SDR50 ||
+ card->host->ios.timing == MMC_TIMING_UHS_DDR50 ||
+ card->host->ios.timing == MMC_TIMING_UHS_SDR104)) {
+ err = mmc_execute_tuning(card);
+
+ /*
+ * As SD Specifications Part1 Physical Layer Specification
+ * Version 3.01 says, CMD19 tuning is available for unlocked
+ * cards in transfer state of 1.8V signaling mode. The small
+ * difference between v3.00 and 3.01 spec means that CMD19
+ * tuning is also available for DDR50 mode.
+ */
+ if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) {
+ pr_warn("%s: ddr50 tuning failed\n",
+ mmc_hostname(card->host));
+ err = 0;
+ }
+ }
+
+out:
+ kfree(status);
+
+ return err;
+}
+
+static bool mmc_sd_card_using_v18(struct mmc_card *card)
+{
+ /*
+ * According to the SD spec., the Bus Speed Mode (function group 1) bits
+ * 2 to 4 are zero if the card is initialized at 3.3V signal level. Thus
+ * they can be used to determine if the card has already switched to
+ * 1.8V signaling.
+ */
+ return card->sw_caps.sd3_bus_mode &
+ (SD_MODE_UHS_SDR50 | SD_MODE_UHS_SDR104 | SD_MODE_UHS_DDR50);
+}
+
+/*
+ * Fetches and decodes switch information
+ */
+static int mmc_read_switch(struct mmc_card *card)
+{
+ int err;
+ u8 *status;
+
+ if (card->scr.sda_vsn < SCR_SPEC_VER_1)
+ return 0;
+
+ if (!(card->csd.cmdclass & CCC_SWITCH)) {
+ pr_warn("%s: card lacks mandatory switch function, performance might suffer\n",
+ mmc_hostname(card->host));
+ return 0;
+ }
+
+ status = kmalloc(64, GFP_KERNEL);
+ if (!status)
+ return -ENOMEM;
+
+ /*
+ * Find out the card's support bits with a mode 0 operation.
+ * The argument does not matter, as the support bits do not
+ * change with the arguments.
+ */
+ err = mmc_sd_switch(card, 0, 0, 0, status);
+ if (err) {
+ /*
+ * If the host or the card can't do the switch,
+ * fail more gracefully.
+ */
+ if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
+ goto out;
+
+ pr_warn("%s: problem reading Bus Speed modes\n",
+ mmc_hostname(card->host));
+ err = 0;
+
+ goto out;
+ }
+
+ if (status[13] & SD_MODE_HIGH_SPEED)
+ card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR;
+
+ if (card->scr.sda_spec3) {
+ card->sw_caps.sd3_bus_mode = status[13];
+ /* Driver Strengths supported by the card */
+ card->sw_caps.sd3_drv_type = status[9];
+ card->sw_caps.sd3_curr_limit = status[7] | status[6] << 8;
+ }
+
+out:
+ kfree(status);
+
+ return err;
+}
+
+/*
+ * Handle the detection and initialisation of a card.
+ *
+ * In the case of a resume, "oldcard" will contain the card
+ * we're trying to reinitialise.
+ */
+int sd_init_card(struct mmc_host *host, u32 ocr,
+ struct mmc_card *oldcard)
+{
+ struct mmc_card *card;
+ int err;
+ u32 cid[4];
+ u32 rocr = 0;
+ bool v18_fixup_failed = false;
+
+ WARN_ON(!host->claimed);
+retry:
+ err = mmc_sd_get_cid(host, ocr, cid, &rocr);
+ if (err)
+ return err;
+
+ if (oldcard) {
+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
+ pr_debug("%s: Perhaps the card was replaced\n",
+ mmc_hostname(host));
+ return -ENOENT;
+ }
+
+ card = oldcard;
+ } else {
+ /*
+ * Allocate card structure.
+ */
+ card = mmc_alloc_card(host, &sd_type);
+ if (IS_ERR(card))
+ return PTR_ERR(card);
+
+ card->ocr = ocr;
+ card->type = MMC_TYPE_SD;
+ memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
+ }
+
+ /*
+ * Call the optional HC's init_card function to handle quirks.
+ */
+ if (host->ops->init_card)
+ host->ops->init_card(host, card);
+
+ /*
+ * For native busses: get card RCA and quit open drain mode.
+ */
+ if (!mmc_host_is_spi(host)) {
+ err = mmc_send_relative_addr(host, &card->rca);
+ if (err)
+ goto free_card;
+ }
+
+ if (!oldcard) {
+ err = mmc_sd_get_csd(host, card);
+ if (err)
+ goto free_card;
+
+ mmc_decode_cid(card);
+ }
+
+ /*
+ * handling only for cards supporting DSR and hosts requesting
+ * DSR configuration
+ */
+ if (card->csd.dsr_imp && host->dsr_req)
+ mmc_set_dsr(host);
+
+ /*
+ * Select card, as all following commands rely on that.
+ */
+ if (!mmc_host_is_spi(host)) {
+ err = mmc_select_card(card);
+ if (err)
+ goto free_card;
+ }
+
+ err = mmc_sd_setup_card(host, card, oldcard != NULL);
+ if (err)
+ goto free_card;
+
+ /*
+ * If the card has not been power cycled, it may still be using 1.8V
+ * signaling. Detect that situation and try to initialize a UHS-I (1.8V)
+ * transfer mode.
+ */
+ if (!v18_fixup_failed && !mmc_host_is_spi(host) && mmc_host_uhs(host) &&
+ mmc_sd_card_using_v18(card) &&
+ host->ios.signal_voltage != MMC_SIGNAL_VOLTAGE_180) {
+ /*
+ * Re-read switch information in case it has changed since
+ * oldcard was initialized.
+ */
+ if (oldcard) {
+ err = mmc_read_switch(card);
+ if (err)
+ goto free_card;
+ }
+ if (mmc_sd_card_using_v18(card)) {
+ if (mmc_host_set_uhs_voltage(host) ||
+ sd_init_uhs_card(card)) {
+ v18_fixup_failed = true;
+ mmc_power_cycle(host, ocr);
+ if (!oldcard)
+ mmc_remove_card(card);
+ goto retry;
+ }
+ goto done;
+ }
+ }
+
+ /* Initialization sequence for UHS-I cards */
+ if (rocr & SD_ROCR_S18A && mmc_host_uhs(host)) {
+ err = sd_init_uhs_card(card);
+ if (err)
+ goto free_card;
+ } else {
+ /*
+ * Switch to wider bus (if supported).
+ */
+ if ((host->caps & MMC_CAP_4_BIT_DATA) &&
+ (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
+ err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
+ if (err)
+ goto free_card;
+
+ mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
+ }
+
+ mmc_app_set_clr_card_detect(card);
+
+ /*
+ * Attempt to change to high-speed (if supported)
+ */
+ err = mmc_sd_switch_hs(card);
+ if (err > 0)
+ mmc_set_timing(card->host, MMC_TIMING_SD_HS);
+ else if (err)
+ goto free_card;
+
+ /*
+ * Set bus speed.
+ */
+ mmc_set_clock(host, mmc_sd_get_max_clock(card));
+ }
+
+ if (host->caps2 & MMC_CAP2_AVOID_3_3V &&
+ host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
+ pr_err("%s: Host failed to negotiate down from 3.3V\n",
+ mmc_hostname(host));
+ err = -EINVAL;
+ goto free_card;
+ }
+done:
+
+ host->card = card;
+ return 0;
+
+free_card:
+ if (!oldcard)
+ mmc_remove_card(card);
+
+ return err;
+}
+
+
+/*
+ * Host is being removed. Free up the current card.
+ */
+static void mmc_sd_remove(struct mmc_host *host)
+{
+ mmc_remove_card(host->card);
+ host->card = NULL;
+}
+
+/*
+ * Card detection - card is alive.
+ */
+static int mmc_sd_alive(struct mmc_host *host)
+{
+ return mmc_send_status(host->card, NULL);
+}
+
+/*
+ * Card detection callback from host.
+ */
+static void mmc_sd_detect(struct mmc_host *host)
+{
+ int err;
+
+ mmc_get_card(host->card, NULL);
+
+ /*
+ * Just check if our card has been removed.
+ */
+ err = _mmc_detect_card_removed(host);
+
+ mmc_put_card(host->card, NULL);
+
+ if (err) {
+ mmc_sd_remove(host);
+
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_power_off(host);
+ mmc_release_host(host);
+ }
+}
+
+static int _mmc_sd_suspend(struct mmc_host *host)
+{
+ int err = 0;
+
+ mmc_claim_host(host);
+
+ if (mmc_card_suspended(host->card))
+ goto out;
+
+ if (!mmc_host_is_spi(host))
+ err = mmc_deselect_cards(host);
+
+ if (!err) {
+ mmc_power_off(host);
+ mmc_card_set_suspended(host->card);
+ }
+
+out:
+ mmc_release_host(host);
+ return err;
+}
+
+/*
+ * Callback for suspend
+ */
+static int mmc_sd_suspend(struct mmc_host *host)
+{
+ int err;
+
+ err = _mmc_sd_suspend(host);
+ if (!err) {
+ pm_runtime_disable(&host->card->dev);
+ pm_runtime_set_suspended(&host->card->dev);
+ }
+
+ return err;
+}
+
+/*
+ * This function tries to determine if the same card is still present
+ * and, if so, restore all state to it.
+ */
+static int _mmc_sd_resume(struct mmc_host *host)
+{
+ int err = 0;
+
+ mmc_claim_host(host);
+
+ if (!mmc_card_suspended(host->card))
+ goto out;
+
+ mmc_power_up(host, host->card->ocr);
+ err = sd_init_card(host, host->card->ocr, host->card);
+ mmc_card_clr_suspended(host->card);
+
+out:
+ mmc_release_host(host);
+ return err;
+}
+
+/*
+ * Callback for resume
+ */
+static int mmc_sd_resume(struct mmc_host *host)
+{
+ pm_runtime_enable(&host->card->dev);
+ return 0;
+}
+
+/*
+ * Callback for runtime_suspend.
+ */
+static int mmc_sd_runtime_suspend(struct mmc_host *host)
+{
+ int err;
+
+ if (!(host->caps & MMC_CAP_AGGRESSIVE_PM))
+ return 0;
+
+ err = _mmc_sd_suspend(host);
+ if (err)
+ pr_err("%s: error %d doing aggressive suspend\n",
+ mmc_hostname(host), err);
+
+ return err;
+}
+
+/*
+ * Callback for runtime_resume.
+ */
+static int mmc_sd_runtime_resume(struct mmc_host *host)
+{
+ int err;
+
+ err = _mmc_sd_resume(host);
+ if (err && err != -ENOMEDIUM)
+ pr_err("%s: error %d doing runtime resume\n",
+ mmc_hostname(host), err);
+
+ return 0;
+}
+
+static int mmc_sd_hw_reset(struct mmc_host *host)
+{
+ mmc_power_cycle(host, host->card->ocr);
+ return sd_init_card(host, host->card->ocr, host->card);
+}
+
+static const struct mmc_bus_ops mmc_sd_ops = {
+ .remove = mmc_sd_remove,
+ .detect = mmc_sd_detect,
+ .runtime_suspend = mmc_sd_runtime_suspend,
+ .runtime_resume = mmc_sd_runtime_resume,
+ .suspend = mmc_sd_suspend,
+ .resume = mmc_sd_resume,
+ .alive = mmc_sd_alive,
+ .shutdown = mmc_sd_suspend,
+ .hw_reset = mmc_sd_hw_reset,
+};
+
+/*
+ * Starting point for SD card init.
+ */
+static int attach_sd(struct mmc_host *host)
+{
+ int err;
+ u32 ocr, rocr;
+
+ WARN_ON(!host->claimed);
+
+ err = mmc_send_app_op_cond(host, 0, &ocr);
+ if (err)
+ return err;
+
+ mmc_attach_bus(host, &mmc_sd_ops);
+ if (host->ocr_avail_sd)
+ host->ocr_avail = host->ocr_avail_sd;
+
+ /*
+ * We need to get OCR a different way for SPI.
+ */
+ if (mmc_host_is_spi(host)) {
+ mmc_go_idle(host);
+
+ err = mmc_spi_read_ocr(host, 0, &ocr);
+ if (err)
+ goto err;
+ }
+
+ /*
+ * Some SD cards claims an out of spec VDD voltage range. Let's treat
+ * these bits as being in-valid and especially also bit7.
+ */
+ ocr &= ~0x7FFF;
+
+ rocr = mmc_select_voltage(host, ocr);
+
+ /*
+ * Can we support the voltage(s) of the card(s)?
+ */
+ if (!rocr) {
+ err = -EINVAL;
+ goto err;
+ }
+
+ /*
+ * Detect and init the card.
+ */
+ err = sd_init_card(host, rocr, NULL);
+ if (err)
+ goto err;
+
+ mmc_release_host(host);
+ err = mmc_add_card(host->card);
+ if (err)
+ goto remove_card;
+
+ mmc_claim_host(host);
+ return 0;
+
+remove_card:
+ mmc_remove_card(host->card);
+ host->card = NULL;
+ mmc_claim_host(host);
+err:
+ mmc_detach_bus(host);
+
+ pr_err("%s: error %d whilst initialising SD card\n",
+ mmc_hostname(host), err);
+
+ return err;
+}
+
+static int mmc_schedule_delayed_work(struct delayed_work *work,
+ unsigned long delay)
+{
+ /*
+ * We use the system_freezable_wq, because of two reasons.
+ * First, it allows several works (not the same work item) to be
+ * executed simultaneously. Second, the queue becomes frozen when
+ * userspace becomes frozen during system PM.
+ */
+ return queue_delayed_work(system_freezable_wq, work, delay);
+}
+
+static void mmc_hw_reset_for_init(struct mmc_host *host)
+{
+ mmc_pwrseq_reset(host);
+
+ if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
+ return;
+ host->ops->hw_reset(host);
+}
+
+static int mmc_rescan_try_freq(struct mmc_host *host, unsigned int freq)
+{
+ host->f_init = freq;
+
+ pr_debug("%s: %s: trying to init card at %u Hz\n",
+ mmc_hostname(host), __func__, host->f_init);
+
+ mmc_power_up(host, host->ocr_avail);
+
+ /*
+ * Some eMMCs (with VCCQ always on) may not be reset after power up, so
+ * do a hardware reset if possible.
+ */
+ mmc_hw_reset_for_init(host);
+
+ /*
+ * sdio_reset sends CMD52 to reset card. Since we do not know
+ * if the card is being re-initialized, just send it. CMD52
+ * should be ignored by SD/eMMC cards.
+ * Skip it if we already know that we do not support SDIO commands
+ */
+ if (!(host->caps2 & MMC_CAP2_NO_SDIO))
+ sdio_reset(host);
+
+ mmc_go_idle(host);
+
+ if (!(host->caps2 & MMC_CAP2_NO_SD))
+ mmc_send_if_cond(host, host->ocr_avail);
+
+ /* Order's important: probe SDIO, then SD, then MMC */
+ if (!(host->caps2 & MMC_CAP2_NO_SDIO))
+ if (!mmc_attach_sdio(host))
+ return 0;
+
+ if (!(host->caps2 & MMC_CAP2_NO_SD))
+ if (!attach_sd(host))
+ return 0;
+
+ if (!(host->caps2 & MMC_CAP2_NO_MMC))
+ if (!mmc_attach_mmc(host))
+ return 0;
+
+ mmc_power_off(host);
+ return -EIO;
+}
+
+/*
+ * Cleanup when the last reference to the bus operator is dropped.
+ */
+static void __mmc_release_bus(struct mmc_host *host)
+{
+ WARN_ON(!host->bus_dead);
+
+ host->bus_ops = NULL;
+}
+
+/*
+ * Increase reference count of bus operator
+ */
+static inline void mmc_bus_get(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->bus_refs++;
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+/*
+ * Decrease reference count of bus operator and free it if
+ * it is the last reference.
+ */
+static inline void mmc_bus_put(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->bus_refs--;
+ if ((host->bus_refs == 0) && host->bus_ops)
+ __mmc_release_bus(host);
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+void mmc_rescan_bayhub(struct work_struct *work)
+{
+ struct mmc_host *host =
+ container_of(work, struct mmc_host, detect.work);
+ int i;
+
+ if (host->rescan_disable)
+ return;
+
+ /* If there is a non-removable card registered, only scan once */
+ if (!mmc_card_is_removable(host) && host->rescan_entered)
+ return;
+ host->rescan_entered = 1;
+
+ if (host->trigger_card_event && host->ops->card_event) {
+ mmc_claim_host(host);
+ host->ops->card_event(host);
+ mmc_release_host(host);
+ host->trigger_card_event = false;
+ }
+
+ mmc_bus_get(host);
+
+ /* Verify a registered card to be functional, else remove it. */
+ if (host->bus_ops && !host->bus_dead)
+ host->bus_ops->detect(host);
+
+ host->detect_change = 0;
+
+ /*
+ * Let mmc_bus_put() free the bus/bus_ops if we've found that
+ * the card is no longer present.
+ */
+ mmc_bus_put(host);
+ mmc_bus_get(host);
+
+ /* if there still is a card present, stop here */
+ if (host->bus_ops != NULL) {
+ mmc_bus_put(host);
+ goto out;
+ }
+
+ /*
+ * Only we can add a new handler, so it's safe to
+ * release the lock here.
+ */
+ mmc_bus_put(host);
+
+ mmc_claim_host(host);
+ if (mmc_card_is_removable(host) && host->ops->get_cd &&
+ host->ops->get_cd(host) == 0) {
+ mmc_power_off(host);
+ mmc_release_host(host);
+ goto out;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(freqs); i++) {
+ if (!mmc_rescan_try_freq(host, max(freqs[i], host->f_min)))
+ break;
+ if (freqs[i] <= host->f_min)
+ break;
+ }
+ mmc_release_host(host);
+
+ out:
+ if (host->caps & MMC_CAP_NEEDS_POLL)
+ mmc_schedule_delayed_work(&host->detect, HZ);
+}
+
+static int card_deselect_card(struct sdhci_host *host)
+{
+ int ret = -1;
+ int err;
+ struct mmc_host *mmc = host->mmc;
+ struct mmc_command cmd = { 0 };
+
+ cmd.opcode = MMC_SELECT_CARD;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(mmc, &cmd, 3);
+ if (err)
+ pr_err("BHT ERR: CMD7 FAIL: err = %d\n", err);
+ else
+ ret = 0;
+
+ return ret;
+}
+
+static bool enter_exit_emulator_mode(struct sdhci_host *host, bool b_enter)
+{
+ bool ret = FALSE;
+ u8 times = b_enter ? 2 : 1;
+ u8 i = 0;
+
+ for (i = 0; i < times; i++) {
+ ret = card_deselect_card(host);
+ if (ret)
+ break;
+ }
+ return ret;
+}
+
+static bool _gg_emulator_read_only(struct sdhci_host *host,
+ u8 *in_data, u32 datalen)
+{
+ struct mmc_host *mmc = host->mmc;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ int rc = 0;
+ u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ struct mmc_request mrq = { 0 };
+ struct mmc_command cmd = { 0 };
+ struct mmc_data data = { 0 };
+ struct scatterlist sg;
+
+ if (!data1) {
+ pr_err("BHT MSG:gg read no memory\n");
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ sg_init_one(&sg, data1, 512);
+
+ cmd.opcode = MMC_READ_SINGLE_BLOCK;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ data.blksz = 512;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+ data.timeout_ns = 1000 * 1000 * 1000;
+ data.sg = &sg;
+ data.sg_len = 1;
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = NULL;
+
+ mmc_wait_for_req(mmc, &mrq);
+ memcpy(in_data, data1, datalen);
+
+ kfree(data1);
+
+ if ((cmd.error == -EILSEQ) || (data.error == -EILSEQ))
+ vendor_host->ggc.sdr50_notuning_crc_error_flag = 1;
+
+ if (cmd.error || data.error)
+ rc = -1;
+out:
+ return rc;
+}
+
+static void host_cmddat_line_reset(struct sdhci_host *host)
+{
+ if (host->ops->reset)
+ host->ops->reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
+}
+
+static int gg_select_card_spec(struct sdhci_host *host)
+{
+ int err;
+ struct mmc_command cmd = { 0 };
+ struct mmc_card *card = host->mmc->card;
+
+ cmd.opcode = MMC_SELECT_CARD;
+
+ if (card) {
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ } else {
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
+ }
+
+ err = mmc_wait_for_cmd(host->mmc, &cmd, 0);
+ if (err == -EILSEQ) {
+ host_cmddat_line_reset(host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = 5;
+ cmd.arg = 0;
+ cmd.flags =
+ MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
+
+ mmc_wait_for_cmd(host->mmc, &cmd, 0);
+
+ pr_err("BHT ERR:%s: CMD7 CRC\n", __func__);
+ host_cmddat_line_reset(host);
+ return 0;
+ }
+ if (err == -ETIMEDOUT) {
+ pr_err("BHT ERR:%s: CMD7 timeout\n", __func__);
+ host_cmddat_line_reset(host);
+ return err;
+ }
+ return 0;
+}
+
+static bool gg_emulator_read_ext(struct sdhci_host *host, bool *card_status,
+ bool *read_status, u8 *data, u32 datalen)
+{
+ bool ret = FALSE;
+ bool card_ret = TRUE;
+ bool rd_ret = FALSE;
+
+ if (enter_exit_emulator_mode(host, TRUE) == 0)
+ ret = TRUE;
+ else
+ ret = FALSE;
+ if (!ret)
+ goto exit;
+
+ if (_gg_emulator_read_only(host, data, datalen) == 0)
+ rd_ret = TRUE;
+ else
+ rd_ret = FALSE;
+
+ if (enter_exit_emulator_mode(host, FALSE) == 0)
+ ret = TRUE;
+ else
+ ret = FALSE;
+
+ if (!ret)
+ goto exit;
+
+ if (gg_select_card_spec(host) == 0)
+ card_ret = TRUE;
+ else
+ card_ret = FALSE;
+
+ if (!rd_ret)
+ pr_err("BHT ERR:GGC read status error\n");
+
+exit:
+ if (!card_ret) {
+ pr_err("BHT ERR:GGC Emulator exit Fail!!\n");
+ ret = FALSE;
+ }
+
+ if (card_status)
+ *card_status = ret;
+
+ if (read_status)
+ *read_status = rd_ret;
+
+ if (rd_ret && !ret)
+ pr_err("BHT ERR:data read ok, but exit NG\n");
+ else if (!rd_ret && ret)
+ pr_err("BHT ERR:data read NG, but exit ok\n");
+
+ return ret;
+}
+
+static void _status_bit_2_bt(int tar, int *byt, int *bit)
+{
+ *byt = tar / 8;
+ *bit = tar % 8;
+}
+
+static u32 _read_status_data_read_register(u8 *cfg, struct t_gg_reg_strt *bts)
+{
+ u32 rv = 0;
+ u32 msk = bts->mask;
+ int byt = 0, bit = 0;
+ int i = 0;
+
+ do {
+ _status_bit_2_bt(bts->ofs + i, &byt, &bit);
+ if (cfg[byt] & (1 << bit))
+ rv |= 1 << i;
+
+ i++;
+ msk >>= 1;
+ if (msk == 0)
+ break;
+ } while (1);
+ return rv;
+}
+
+static bool ggc_read_registers_ext(struct sdhci_host *host,
+ bool *card_status, bool *read_status,
+ struct t_gg_reg_strt *gg_reg_arr, u8 num)
+{
+ u8 get_idx = 0;
+ bool ret = FALSE;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ struct ggc_platform_t *ggc = &vendor_host->ggc;
+
+ if (read_status)
+ *read_status = FALSE;
+ if (card_status)
+ *card_status = FALSE;
+
+ memset(ggc->_cur_read_buf, 0, 512);
+ ret = gg_emulator_read_ext(host, card_status, read_status, ggc->_cur_read_buf, 512);
+ if (read_status == FALSE)
+ goto exit;
+
+ for (get_idx = 0; get_idx < num; get_idx++)
+ (gg_reg_arr + get_idx)->value =
+ _read_status_data_read_register(ggc->_cur_read_buf, (gg_reg_arr + get_idx));
+
+exit:
+ return ret;
+}
+
+static bool gg_emulator_read(struct sdhci_host *host, u8 *data, u32 datalen)
+{
+ bool ret = FALSE;
+ bool rd_ret = FALSE;
+
+ ret = enter_exit_emulator_mode(host, TRUE);
+ if (ret)
+ goto exit;
+
+ rd_ret = _gg_emulator_read_only(host, data, datalen);
+
+ ret = enter_exit_emulator_mode(host, FALSE);
+ if (ret)
+ goto exit;
+
+ ret = gg_select_card_spec(host);
+
+exit:
+ if (rd_ret)
+ pr_err("BHT ERR:GGC read status error\n");
+
+ if (ret)
+ pr_err("BHT ERR:GGC Emulator exit Fail!!\n");
+
+ if (rd_ret == 0 && ret) {
+ pr_err("BHT ERR:data read ok, but exit NG\n");
+ ret = 0;
+ }
+
+ if (rd_ret && ret == 0) {
+ pr_err("BHT ERR:data read NG, but exit ok\n");
+ ret = -1;
+ }
+
+ return ret ? FALSE : TRUE;
+}
+
+static bool _ggc_emulator_write_only(struct sdhci_host *host,
+ u8 *in_data, u32 datalen)
+{
+ struct mmc_host *mmc = host->mmc;
+ int rc = 0;
+ u8 *data1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
+ struct mmc_request mrq = { 0 };
+ struct mmc_command cmd = { 0 };
+ struct mmc_data data = { 0 };
+ struct scatterlist sg;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (!data1) {
+ pr_err("BHT MSG:gg write no memory\n");
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ memcpy(data1, in_data, datalen);
+ sg_init_one(&sg, data1, 512);
+
+ cmd.opcode = MMC_WRITE_BLOCK;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ data.blksz = 512;
+ data.blocks = 1;
+ data.flags = MMC_DATA_WRITE;
+ data.timeout_ns = 1000 * 1000 * 1000;
+ data.sg = &sg;
+ data.sg_len = 1;
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = NULL;
+
+ mmc_wait_for_req(mmc, &mrq);
+
+ if (cmd.error == -EILSEQ)
+ vendor_host->ggc.sdr50_notuning_crc_error_flag = 1;
+
+ kfree(data1);
+out:
+ return rc;
+}
+
+static bool gg_emulator_write(struct sdhci_host *host, u8 *data, u32 datalen)
+{
+ bool ret = FALSE;
+ bool wr_ret = FALSE;
+ u32 i = 0;
+ u32 reg;
+
+ ret = enter_exit_emulator_mode(host, TRUE);
+ if (ret)
+ goto exit;
+
+ pr_debug("BHT MSG: dump config data\n");
+ for (i = 0; i < (datalen/sizeof(u32)); i++) {
+ memcpy(®, data+i*sizeof(u32), sizeof(u32));
+ pr_debug("BHT MSG:\tggc_reg32[%03d]=0x%08x\n", i, reg);
+ }
+
+ _ggc_emulator_write_only(host, data, datalen);
+ wr_ret = TRUE;
+
+ ret = enter_exit_emulator_mode(host, FALSE);
+ if (ret)
+ goto exit;
+
+ ret = gg_select_card_spec(host);
+
+exit:
+ if (wr_ret == FALSE)
+ ret = FALSE;
+
+ if (ret == FALSE)
+ pr_err("BHT ERR:%s: GGC Emulator Write Fail!!\n", __func__);
+
+ return ret;
+}
+
+static bool get_gg_reg_cur(struct sdhci_host *host, u8 *data,
+ struct t_gg_reg_strt *gg_reg_arr, u8 num)
+{
+ u8 get_idx = 0;
+ bool ret = FALSE;
+
+ /* read ggc register */
+ memset(data, 0, 512);
+ ret = gg_emulator_read(host, data, 512);
+
+ if (ret == FALSE)
+ goto exit;
+
+ /* read the offset bits value */
+ for (get_idx = 0; get_idx < num; get_idx++) {
+ (gg_reg_arr + get_idx)->value =
+ read_ram_bits_ofs_mask(data, (gg_reg_arr + get_idx));
+ }
+exit:
+ return ret;
+}
+
+static void chg_gg_reg_cur_val(struct ggc_platform_t *ggc, u8 *data,
+ struct t_gg_reg_strt *gg_reg_arr, u8 num, bool b_sav_chg)
+{
+ u8 chg_idx = 0;
+
+ for (chg_idx = 0; chg_idx < num; chg_idx++) {
+ /* modify the ggc register bit value */
+ cfg_write_bits_ofs_mask(data, (gg_reg_arr + chg_idx),
+ (gg_reg_arr + chg_idx)->value);
+ }
+
+ if (b_sav_chg)
+ set_gg_reg_cur_val(ggc, data, 64);
+}
+
+static void log_bin(u32 n)
+{
+ int i = 0;
+ u8 tb[33] = { 0 };
+
+ for (i = 0; i < 32; i++) {
+ if (n & (1 << i))
+ tb[i] = '1';
+ else
+ tb[i] = '0';
+ }
+ pr_debug("BHT MSG:bin:%s\n", tb);
+}
+
+static void phase_str(u8 *tb, u32 n)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (n & (1 << i))
+ tb[i] = '1';
+ else
+ tb[i] = '0';
+ }
+ tb[TUNING_PHASE_SIZE] = 0;
+}
+
+static int get_bit_number(u32 n)
+{
+ int i = 0;
+ int cnt = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (n & (1 << i))
+ cnt++;
+ }
+ return cnt;
+}
+
+static bool gg_emulator_write_ext(struct sdhci_host *host, bool *card_status, u8 *data, u32 datalen)
+{
+ bool ret = FALSE;
+ bool wr_ret = FALSE;
+
+ ret = enter_exit_emulator_mode(host, TRUE);
+ if (ret)
+ goto exit;
+
+ _ggc_emulator_write_only(host, data, datalen);
+ wr_ret = TRUE;
+
+ ret = enter_exit_emulator_mode(host, FALSE);
+ if (ret)
+ goto exit;
+
+ ret = (gg_select_card_spec(host) == 0) ? TRUE : FALSE;
+ if (ret == FALSE) {
+ if (card_status)
+ *card_status = FALSE;
+ }
+
+exit:
+ if (wr_ret == FALSE)
+ ret = FALSE;
+
+ if (ret == FALSE)
+ pr_err("BHT ERR:%s: GGC Emulator Write Fail!!\n", __func__);
+
+ return ret;
+}
+
+static bool ggc_set_output_tuning_phase_ext(struct sdhci_host *host,
+ bool *card_status, int sela, int selb)
+{
+ bool ret = TRUE;
+ u8 data[512] = { 0 };
+ struct t_gg_reg_strt gg_reg_arr[8];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ get_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.dll_sela_100m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.dll_sela_200m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.dll_selb_100m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[3], &vendor_host->ggc.dll_selb_200m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[4], &vendor_host->ggc.dll_selb_100m_cfg_en,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[5], &vendor_host->ggc.dll_selb_200m_cfg_en,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[6], &vendor_host->ggc.internl_tuning_en_100m,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[7], &vendor_host->ggc.internl_tuning_en_200m,
+ sizeof(struct t_gg_reg_strt));
+ gg_reg_arr[0].value = sela;
+ gg_reg_arr[1].value = sela;
+ gg_reg_arr[2].value = selb;
+ gg_reg_arr[3].value = selb;
+ gg_reg_arr[4].value = 1;
+ gg_reg_arr[5].value = 1;
+ gg_reg_arr[6].value = 1;
+ gg_reg_arr[7].value = 1;
+ if (card_status)
+ *card_status = TRUE;
+ chg_gg_reg_cur_val(&vendor_host->ggc, data, gg_reg_arr, 8, TRUE);
+ ret = gg_emulator_write_ext(host, card_status, data, 512);
+ return ret;
+}
+
+static bool gg_fix_output_tuning_phase(struct sdhci_host *host, int sela, int selb)
+{
+ u8 data[512] = { 0 };
+ struct t_gg_reg_strt gg_reg_arr[10];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ pr_debug("BHT MSG: %s - sela dll: %x, selb dll: %x\n", __func__, sela,
+ selb);
+
+ get_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.dll_sela_100m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.dll_sela_200m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.dll_selb_100m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[3], &vendor_host->ggc.dll_selb_200m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[4], &vendor_host->ggc.dll_selb_100m_cfg_en,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[5], &vendor_host->ggc.dll_selb_200m_cfg_en,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[6], &vendor_host->ggc.internl_tuning_en_100m,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[7], &vendor_host->ggc.internl_tuning_en_200m,
+ sizeof(struct t_gg_reg_strt));
+ gg_reg_arr[0].value = sela;
+ gg_reg_arr[1].value = sela;
+ gg_reg_arr[2].value = selb;
+ gg_reg_arr[3].value = selb;
+ gg_reg_arr[4].value = 1;
+ gg_reg_arr[5].value = 1;
+ gg_reg_arr[6].value = 0;
+ gg_reg_arr[7].value = 0;
+
+ chg_gg_reg_cur_val(&vendor_host->ggc, data, gg_reg_arr, 8, TRUE);
+
+ return gg_emulator_write(host, data, 512);
+}
+
+static void gen_array_data(u32 low32, u32 high32, u32 *ptw)
+{
+ u8 tu_res_per[6][TUNING_PHASE_SIZE];
+ u8 i = 0, j = 0;
+ u8 i_mode = 0;
+ u32 tw = 0;
+
+ memset(tu_res_per, 1, sizeof(tu_res_per));
+ for (i = 0; i < 64; i++) {
+ u32 tmp_data = (i < 32) ? low32 : high32;
+
+ tu_res_per[i / TUNING_PHASE_SIZE][i % TUNING_PHASE_SIZE] =
+ (tmp_data & (1 << (i % 32))) >> (i % 32);
+ }
+
+ for (i_mode = 0; i_mode < TUNING_PHASE_SIZE; i_mode++) {
+ for (j = 0; j < 6; j++) {
+ if (tu_res_per[j][i_mode] != 0)
+ tw |= (1 << i_mode);
+ else {
+ tw &= ~(1 << i_mode);
+ break;
+ }
+ }
+ }
+ if (ptw)
+ *ptw = tw;
+}
+
+static bool sw_calc_tuning_result(struct sdhci_host *host, u32 *tx_selb,
+ u32 *all_selb, u64 *raw_tx_selb)
+{
+ bool ret = FALSE;
+ u8 data[512] = { 0 };
+ u32 selb_status_tx_low32 = 0, selb_status_tx_high32 = 0;
+ u32 selb_status_ggc_low32 = 0, selb_status_ggc_high32 = 0;
+ struct t_gg_reg_strt gg_reg_arr[6];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.pha_stas_tx_low32, sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.pha_stas_tx_high32, sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.pha_stas_rx_low32, sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[3], &vendor_host->ggc.pha_stas_rx_high32, sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[4], &vendor_host->ggc.dll_sela_after_mask, sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[5], &vendor_host->ggc.dll_selb_after_mask, sizeof(struct t_gg_reg_strt));
+
+ ret = get_gg_reg_cur(host, data, gg_reg_arr, 6);
+
+ if (ret == TRUE) {
+ selb_status_tx_low32 = gg_reg_arr[0].value;
+ pr_debug("BHT MSG:[205-236]:\n");
+ log_bin(selb_status_tx_low32);
+ selb_status_tx_high32 = gg_reg_arr[1].value;
+ pr_debug("BHT MSG:[237-268]:\n");
+ log_bin(selb_status_tx_high32);
+ selb_status_ggc_low32 = gg_reg_arr[2].value;
+ pr_debug("BHT MSG:[14-45]:\n");
+ log_bin(selb_status_ggc_low32);
+ selb_status_ggc_high32 = gg_reg_arr[3].value;
+ pr_debug("BHT MSG:[46-77]:\n");
+ log_bin(selb_status_ggc_high32);
+ pr_debug("BHT MSG:dll sela after mask=%xh\n", gg_reg_arr[4].value);
+ pr_debug("BHT MSG:dll selb after mask=%xh\n", gg_reg_arr[5].value);
+
+ if (raw_tx_selb) {
+ *raw_tx_selb = gg_reg_arr[1].value;
+ (*raw_tx_selb) <<= 32;
+ *raw_tx_selb += gg_reg_arr[0].value;
+ pr_debug("BHT MSG:raw_tx_selb:%llxh\n", *raw_tx_selb);
+ }
+
+ if (tx_selb) {
+ gen_array_data(gg_reg_arr[0].value, gg_reg_arr[1].value,
+ tx_selb);
+ pr_debug("BHT MSG:tx_selb:%xh\n", *tx_selb);
+ }
+ if (all_selb) {
+ gen_array_data(gg_reg_arr[2].value, gg_reg_arr[3].value,
+ all_selb);
+ pr_debug("BHT MSG:all_selb:%xh\n", *all_selb);
+ }
+ }
+
+ return ret;
+}
+
+static bool gg_tuning_result(struct sdhci_host *host, u32 *tx_selb, u32 *all_selb,
+ u64 *raw_tx_selb)
+{
+ host_cmddat_line_reset(host);
+ return sw_calc_tuning_result(host, tx_selb, all_selb, raw_tx_selb);
+}
+
+static u64 GENERATE_64_IDX_VALUE(int sft)
+{
+ u64 val = 1;
+
+ return val << sft;
+}
+
+static bool is_bus_mode_sdr104(struct sdhci_host *host)
+{
+ bool ret = FALSE;
+
+ if (host->timing == MMC_TIMING_UHS_SDR104)
+ ret = TRUE;
+
+ return ret;
+}
+
+static bool _check_bus_mode(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ struct ggc_platform_t *ggc = &vendor_host->ggc;
+
+ if (is_bus_mode_sdr104(host))
+ ggc->cur_bus_mode = &vendor_host->ggc.sdr104;
+ else
+ ggc->cur_bus_mode = &vendor_host->ggc.sdr50;
+
+ return true;
+}
+
+static void tx_selb_failed_history_update(struct sdhci_host *host, u32 val)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ _check_bus_mode(host);
+
+ vendor_host->ggc.cur_bus_mode->tx_selb_failed_history &= val;
+}
+
+static u32 tx_selb_failed_history_get(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ _check_bus_mode(host);
+
+ return vendor_host->ggc.cur_bus_mode->tx_selb_failed_history;
+}
+
+static void tx_selb_failed_tb_update(struct sdhci_host *host, int sela, u32 val)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ _check_bus_mode(host);
+ vendor_host->ggc.cur_bus_mode->tx_selb_tb[sela] &= val;
+}
+
+static u32 tx_selb_failed_tb_get(struct sdhci_host *host, int sela)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ u32 value = 0;
+
+ _check_bus_mode(host);
+
+ if (is_bus_mode_sdr104(host))
+ value = vendor_host->ggc.sdr104.tx_selb_tb[sela];
+ else
+ value = vendor_host->ggc.sdr50.tx_selb_tb[sela];
+
+ return value;
+}
+
+static void all_selb_failed_tb_update(struct sdhci_host *host, int sela, u32 val)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ _check_bus_mode(host);
+ vendor_host->ggc.cur_bus_mode->all_selb_tb[sela] &= val;
+}
+
+static u32 all_selb_failed_tb_get(struct sdhci_host *host, int sela)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ u32 val;
+
+ _check_bus_mode(host);
+
+ val = vendor_host->ggc.cur_bus_mode->all_selb_tb[sela];
+
+ return val;
+}
+
+static void chk_phase_window(u8 *tuning_win, u8 *mid_val, u8 *max_pass_win)
+{
+ u8 tuning_pass[TUNING_PHASE_SIZE + 32];
+ u8 tuning_pass_start[TUNING_PHASE_SIZE + 32];
+ u8 tuning_pass_num_max = 0;
+ u8 first_0 = 0;
+ u8 i = 0, j = 0;
+ u8 i_mode = 0, selb_mode = 0;
+
+ memset(tuning_pass, 1, sizeof(tuning_pass));
+ memset(tuning_pass_start, 1, sizeof(tuning_pass_start));
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_win[i] == 0) {
+ first_0 = i;
+ break;
+ }
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ i_mode = (first_0 + i) % TUNING_PHASE_SIZE;
+ if (tuning_win[i_mode] == 1)
+ tuning_pass[j]++;
+ else if (tuning_pass[j])
+ j++;
+ if (tuning_pass[j] == 1)
+ tuning_pass_start[j] = i_mode;
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_pass_num_max < tuning_pass[i]) {
+ tuning_pass_num_max = tuning_pass[i];
+ i_mode = i;
+ }
+ }
+
+ if (tuning_pass_num_max == 0)
+ pr_err
+ ("Get max pass window fail, there is no any pass phase!!\n");
+ else {
+ *max_pass_win = tuning_pass_num_max - 1;
+ tuning_pass_num_max /= 2;
+ selb_mode = tuning_pass_start[i_mode] + tuning_pass_num_max;
+ if ((*max_pass_win % 2 == 0))
+ selb_mode += 1;
+ selb_mode %= TUNING_PHASE_SIZE;
+ }
+
+ *mid_val = selb_mode;
+}
+
+static void dump_array(u8 *tb)
+{
+ int i = 0;
+ u8 str[12] = { 0 };
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++)
+ str[i] = tb[i] + '0';
+}
+
+static void bits_generate_array(u8 *tb, u32 v)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if ((v & (1 << i)))
+ tb[i] = 1;
+ else
+ tb[i] = 0;
+ }
+ dump_array(tb);
+}
+
+static void chk_arr_max_win(u8 *tuning_win, u8 first_i, u8 *mid_val,
+ u8 *first_val, u8 *max_pass_win, struct chk_type_t type)
+{
+ u8 tuning_pass[TUNING_PHASE_SIZE];
+ u8 tuning_pass_start[TUNING_PHASE_SIZE];
+ u8 tuning_pass_num_max = 0;
+ u8 first_0 = 0;
+ u8 i = 0, j = 0;
+ u8 i_mode = 0, selb_mode = 0;
+
+ memset(tuning_pass, 1, sizeof(tuning_pass));
+ memset(tuning_pass_start, 1, sizeof(tuning_pass_start));
+
+ if (type.first_valid)
+ first_0 = first_i;
+ else {
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_win[i] == 0) {
+ first_0 = i;
+ break;
+ }
+ }
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ i_mode = (first_0 + i) % TUNING_PHASE_SIZE;
+ if (tuning_win[i_mode] == 1)
+ tuning_pass[j]++;
+ else if (tuning_pass[j])
+ j++;
+ if (tuning_pass[j] == 1)
+ tuning_pass_start[j] = i_mode;
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_pass_num_max < tuning_pass[i]) {
+ tuning_pass_num_max = tuning_pass[i];
+ i_mode = i;
+ }
+ }
+
+ if (tuning_pass_num_max == 0)
+ pr_err
+ ("Get max pass window fail, there is no any pass phase!!\n");
+ else {
+ *max_pass_win = tuning_pass_num_max - 1;
+ tuning_pass_num_max /= 2;
+ if (first_val)
+ *first_val = tuning_pass_start[i_mode];
+ selb_mode = tuning_pass_start[i_mode] + tuning_pass_num_max;
+ if ((*max_pass_win % 2 == 0) && (type.right_valid)
+ )
+ selb_mode += 1;
+ selb_mode %= TUNING_PHASE_SIZE;
+ }
+
+ *mid_val = selb_mode;
+}
+
+void no_fail_p(u8 *tuning_win, u8 *mid_val, u8 *max_pass_win, u8 *first_val)
+{
+ struct chk_type_t type;
+ u8 first_0 = 0;
+
+ memset((u8 *)&type, 0, sizeof(struct chk_type_t));
+
+ type.first_valid = 0;
+ type.right_valid = 1;
+ type.record_valid = 0;
+
+ chk_arr_max_win(tuning_win, first_0, mid_val, first_val,
+ max_pass_win, type);
+}
+
+static int ggc_get_selx_weight(u32 val)
+{
+ int i = 0;
+ int cnt = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i))
+ cnt++;
+ }
+ return cnt;
+}
+
+void tx_selb_calculate_valid_phase_range(u32 val, int *start,
+ int *pass_cnt)
+{
+ int i = 0, flg = 0;
+
+ *pass_cnt = ggc_get_selx_weight(val);
+ for (i = 0; i < (TUNING_PHASE_SIZE * 2); i++) {
+ if ((GET_TRUNING_RING_IDX_VALUE(val, i)) == 0 && (flg == 0))
+ flg = 1;
+ if ((flg == 1) && GET_TRUNING_RING_IDX_VALUE(val, i)) {
+ *start = TRUNING_RING_IDX(i);
+ break;
+ }
+ }
+}
+
+bool ggc_update_default_selb_phase_tuning_cnt(struct sdhci_host *host, int selb,
+ int tuning_cnt)
+{
+ struct t_gg_reg_strt gg_reg_arr[3];
+ u8 data[512];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ get_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+
+ pr_debug("BHT MSG: selb:%xh,tuning_cnt:%xh\n", selb,
+ tuning_cnt);
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.dll_selb_100m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.dll_selb_200m_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.cmd19_cnt_cfg,
+ sizeof(struct t_gg_reg_strt));
+
+ gg_reg_arr[0].value = selb;
+ gg_reg_arr[1].value = selb;
+ gg_reg_arr[2].value = tuning_cnt;
+ chg_gg_reg_cur_val(&vendor_host->ggc, data, gg_reg_arr, 3, TRUE);
+
+ return TRUE;
+}
+
+static void _ggc_update_cur_setting_for_sw_selb_tuning(struct sdhci_host *host,
+ u32 val)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ int start = 0, pass_cnt = 0;
+
+ tx_selb_calculate_valid_phase_range(val, &start, &pass_cnt);
+ pr_debug("BHT MSG:%s %x %x %x\n", __func__, val, start, pass_cnt);
+ ggc_update_default_selb_phase_tuning_cnt(host, start, pass_cnt); //update
+ vendor_host->ggc.ggc_sw_selb_tuning_first_selb = start;
+}
+
+int sdhci_bht_sdr50_execute_tuning(struct sdhci_host *host, u32 opcode)
+{
+
+ u8 phase, *data_buf;
+ int size = 64;
+ int rc = 0;
+ struct mmc_host *mmc = host->mmc;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ pr_debug("%s: Enter %s\n", mmc_hostname(mmc), __func__);
+
+ data_buf = kmalloc(size, GFP_KERNEL);
+
+ phase = 0;
+ do {
+ struct mmc_command cmd = { 0 };
+ struct mmc_data data = { 0 };
+ struct mmc_request mrq = {
+ .cmd = &cmd,
+ .data = &data
+ };
+ struct scatterlist sg;
+
+ cmd.opcode = opcode;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+
+ data.blksz = size;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+ data.timeout_ns = 30 * 1000 * 1000; /* 30ms */
+
+ data.sg = &sg;
+ data.sg_len = 1;
+ sg_init_one(&sg, data_buf, size);
+ memset(data_buf, 0, size);
+ host_cmddat_line_reset(host);
+ mmc_wait_for_req(mmc, &mrq);
+
+ if (cmd.error) {
+ if (cmd.error == -EILSEQ)
+ vendor_host->ggc.sdr50_notuning_crc_error_flag = 1;
+ if (cmd.error == -ETIMEDOUT && phase == 0) {
+ pr_err("BHT ERR:cmd19 timeout\n");
+ rc = -ETIMEDOUT;
+ goto kfree;
+ }
+ }
+
+ if (data.error) {
+ if (data.error == -EILSEQ)
+ vendor_host->ggc.sdr50_notuning_crc_error_flag = 1;
+ }
+ } while (++phase < 16);
+
+kfree:
+ kfree(data_buf);
+
+ return rc;
+}
+
+int get_config_sela_setting(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (is_bus_mode_sdr104(host))
+ return vendor_host->ggc.def_sela_200m;
+ else
+ return vendor_host->ggc.def_sela_100m;
+}
+
+int get_config_selb_setting(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (is_bus_mode_sdr104(host))
+ return vendor_host->ggc.def_selb_200m;
+ else
+ return vendor_host->ggc.def_selb_100m;
+}
+
+u32 get_all_sela_status(struct sdhci_host *host, u32 target_selb)
+{
+ u32 all_sela = 0;
+ u32 all_selb = 0;
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ all_selb = all_selb_failed_tb_get(host, i);
+ if (all_selb & (1 << target_selb))
+ all_sela |= 1 << i;
+ }
+ return all_sela;
+}
+
+int get_pass_window_weight(u32 val)
+{
+ int i = 0;
+ int cnt = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i))
+ cnt++;
+ }
+ return cnt;
+}
+
+int get_sela_nearby_pass_window(u32 sela, u32 base)
+{
+
+ int i = 0;
+ int idx = base;
+ int cnt = 0;
+
+ if (GET_IDX_VALUE(sela, idx) == 0)
+ return 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(sela, idx)) {
+ idx++;
+ idx %= TUNING_PHASE_SIZE;
+ } else {
+ break;
+ }
+ }
+
+ if (idx == 0)
+ idx = 0xa;
+ else
+ idx--;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(sela, idx)) {
+ cnt++;
+ if (idx == 0)
+ idx = 0xa;
+ else
+ idx--;
+ } else {
+ break;
+ }
+ }
+ return cnt;
+}
+
+int get_left_one_sel(int base)
+{
+ if (base == 0)
+ return 0xa;
+ else
+ return base - 1;
+}
+
+int get_right_one_sel(int base)
+{
+ if (base == 0xa)
+ return 0x0;
+ else
+ return base + 1;
+}
+
+int get_dif(int x, int y)
+{
+ int dif = 0;
+
+ if (y > x)
+ dif = y - x;
+ else
+ dif = x - y;
+
+ return dif;
+}
+
+static int update_selb(struct sdhci_host *host, int target_selb)
+{
+ return target_selb;
+}
+
+static int ggc_get_10case_0_index(u32 val)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i) == 0
+ && GET_IDX_VALUE(val,
+ TRUNING_RING_IDX(i + TUNING_PHASE_SIZE -
+ 1))) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static u32 ggc_get_01case_0_index(u32 val)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i) == 0
+ && GET_IDX_VALUE(val, TRUNING_RING_IDX(i + 1))) {
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+static int ggc_get_next_1_index(u32 val, int pos)
+{
+ int i = 0;
+
+ pos = pos % TUNING_PHASE_SIZE;
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, (pos+i)%TUNING_PHASE_SIZE))
+ break;
+ }
+ if (GET_IDX_VALUE(val, (pos+i)%TUNING_PHASE_SIZE))
+ return (pos+i)%TUNING_PHASE_SIZE;
+ else
+ return -1;
+}
+
+static u32 ggc_get_01case_1_index(u32 val)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i) == 0
+ && GET_IDX_VALUE(val, TRUNING_RING_IDX(i + 1))) {
+ return TRUNING_RING_IDX(i + 1);
+ }
+ }
+
+ return -1;
+}
+
+static int ggc_get_first_0_index(u32 val)
+{
+ int i = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(val, i) == 0)
+ return i;
+ }
+ pr_debug("BHT MSG:oops-not find 0 index\n");
+ return 0;
+}
+
+static int _tx_selb_inject_policy(int tx_selb, int org_selb)
+{
+ int group_pos[TUNING_PHASE_SIZE+1][3];
+ int group_cnt = 0;
+ int max_len_group = 0;
+ int max_len = 0;
+ int i, j, cnt;
+ int zero_start, zero_end, sel;
+
+ if ((org_selb & BIT_PASS_MASK) != BIT_PASS_MASK) {
+ sel = tx_selb;
+ zero_start = ggc_get_10case_0_index(sel);
+ sel &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_left_one_sel
+ (zero_start));
+ zero_end = ggc_get_01case_0_index(sel);
+ sel &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_right_one_sel
+ (zero_end));
+ if (sel != (sel & tx_selb)) {
+ pr_err
+ ("tx selb reinject exception case :not adjacent phase\n");
+ pr_err("BHT ERR:selb_failed range:%xh ,new tx_selb:%x\n",
+ org_selb, tx_selb);
+ }
+ org_selb &= tx_selb;
+ } else {
+ cnt = ggc_get_selx_weight(~tx_selb);
+ pr_debug("BHT MSG:%d\n", cnt);
+ switch (cnt) {
+ case 1:
+ i = ggc_get_first_0_index(tx_selb);
+ tx_selb &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_right_one_sel
+ (i));
+ tx_selb &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_left_one_sel
+ (i));
+
+ break;
+ case 2:
+ i = ggc_get_10case_0_index(tx_selb);
+ tx_selb &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_left_one_sel
+ (i));
+ i = ggc_get_01case_0_index(tx_selb);
+ tx_selb &=
+ ~GENERATE_TRUNING_RING_IDX_VALUE(get_right_one_sel
+ (i));
+ break;
+ default:
+ pr_debug("BHT MSG:>= 3 point case\n");
+ }
+ org_selb &= tx_selb;
+ }
+
+ pr_debug("BHT MSG:will check continuous 0bits: 0x%x\n", org_selb);
+
+ memset(group_pos, 0, sizeof(group_pos));
+ for (i = ggc_get_01case_1_index(org_selb);
+ i < TUNING_PHASE_SIZE && i >= 0 && group_cnt < TUNING_PHASE_SIZE;) {
+ for (j = 1; j < TUNING_PHASE_SIZE; j++) {
+ if (GET_TRUNING_RING_IDX_VALUE(org_selb, i+j) != 0)
+ continue;
+ else
+ break;
+ }
+ group_pos[group_cnt][0] = i;
+ group_pos[group_cnt][1] = (i + j - 1) % TUNING_PHASE_SIZE;
+ group_pos[group_cnt][2] = j;
+ group_cnt++;
+ if (group_pos[group_cnt-1][0] > group_pos[group_cnt-1][1])
+ break;
+ i = ggc_get_next_1_index(org_selb, (i+j)%TUNING_PHASE_SIZE);
+ for (j = 0; j < group_cnt; j++) {
+ if (i == group_pos[j][0])
+ break;
+ }
+ if (j < group_cnt)
+ break;
+ }
+
+ if (group_cnt > 1) {
+ pr_err("BHT ERR:After inject, selb 0x%x has %d continuous 0 bits\n",
+ org_selb, group_cnt);
+
+ for (i = 0; i < group_cnt; i++) {
+ if (max_len < group_pos[i][2]) {
+ max_len = group_pos[i][2];
+ max_len_group = i;
+ }
+ }
+ for (i = (group_pos[max_len_group][1] + 1) % TUNING_PHASE_SIZE;
+ i != group_pos[max_len_group][0]; i = (i+1)%TUNING_PHASE_SIZE) {
+ org_selb &= ~(1 << i);
+ }
+ pr_err("BHT ERR:After merge incontious 0 group, selb changed to 0x%x\n", org_selb);
+ } else if (group_cnt > 0) {
+ pr_err("BHT ERR:After merge incontious 0 group, selb = 0x%x\n", org_selb);
+ } else {
+ pr_err("BHT ERR:selb 0x%x has no bit is 0\n", org_selb);
+ }
+
+ return org_selb;
+}
+
+void tx_selb_inject_policy(struct sdhci_host *host, int tx_selb)
+{
+
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ pr_debug("BHT MSG:before inject, failed ragen 0x%x, tx_selb 0x%x\n",
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range, tx_selb);
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range =
+ _tx_selb_inject_policy(tx_selb, vendor_host->ggc.ggc_cmd_tx_selb_failed_range);
+ tx_selb_failed_history_update(host, vendor_host->ggc.ggc_cmd_tx_selb_failed_range);
+ pr_debug("BHT MSG:after inject %xh range:%xh\n", tx_selb,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range);
+ if (is_bus_mode_sdr104(host))
+ vendor_host->ggc.sdr104.fail_phase = vendor_host->ggc.ggc_cmd_tx_selb_failed_range;
+ else
+ vendor_host->ggc.sdr50.fail_phase = vendor_host->ggc.ggc_cmd_tx_selb_failed_range;
+}
+
+int get_selb_failure_point(int start, u64 raw_tx_selb, int tuning_cnt)
+{
+ int last = start + (tuning_cnt - 1);
+ int i = 0;
+ int j = 0;
+ int phase = start;
+ int vct = BIT_PASS_MASK;
+
+ pr_debug("BHT MSG:%s start:%d tuning_cnt:%d\n", __func__, start,
+ tuning_cnt);
+
+ for (i = 0; i < tuning_cnt; i++) {
+ if ((raw_tx_selb & GENERATE_64_IDX_VALUE(last - i)) == 0)
+ break;
+ }
+ if (i == tuning_cnt) {
+ phase = last % TUNING_PHASE_SIZE;
+ vct &= (~(1 << phase));
+ goto exit;
+ }
+
+ for (i = 0; i < tuning_cnt; i++) {
+ if ((raw_tx_selb & GENERATE_64_IDX_VALUE(last - i)) != 0)
+ break;
+ }
+ for (j = i - 2; j >= 0; j--)
+ raw_tx_selb |= (1 << (last - j));
+
+ for (j = 0; j < tuning_cnt; j++) {
+ if (0 == (raw_tx_selb & GENERATE_64_IDX_VALUE(last - j)))
+ vct &= (~(1 << (last-j)));
+ }
+
+exit:
+ pr_debug("BHT MSG:%s: after adjust raw_tx_selb: 0x%llx, vct 0x%x\n",
+ __func__, raw_tx_selb, vct);
+
+ return vct;
+}
+
+bool selx_failure_point_exist(u32 val)
+{
+ return (val & BIT_PASS_MASK) != BIT_PASS_MASK;
+}
+
+static int _bits_vct_get_left_index(int base)
+{
+ return TRUNING_RING_IDX(base + TUNING_PHASE_SIZE - 1);
+}
+
+int _get_best_window_phase(u32 vct, int *pmax_pass_win, int shif_left_flg)
+{
+ u8 tuning_win[TUNING_PHASE_SIZE] = { 0 };
+ u8 tuning_pass[TUNING_PHASE_SIZE];
+ int tuning_pass_start[TUNING_PHASE_SIZE];
+ int tuning_pass_num_max = 0;
+ int first_0 = 0;
+ int i = 0, j = 0;
+ int i_mode = 0, selb_mode = 0;
+
+ memset(tuning_pass, 0, sizeof(tuning_pass));
+ memset(tuning_pass_start, 0, sizeof(tuning_pass_start));
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(vct, i))
+ tuning_win[i] = 1;
+ else
+ tuning_win[i] = 0;
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_win[i] == 0) {
+ first_0 = i;
+ break;
+ }
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ i_mode = TRUNING_RING_IDX(first_0 + i);
+ if (tuning_win[i_mode] == 1)
+ tuning_pass[j]++;
+ else if (tuning_pass[j])
+ j++;
+ if (tuning_pass[j] == 1)
+ tuning_pass_start[j] = i_mode;
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (tuning_pass_num_max < tuning_pass[i]) {
+ tuning_pass_num_max = tuning_pass[i];
+ i_mode = i;
+ }
+ }
+
+ if (tuning_pass_num_max == 0) {
+ pr_err("BHT ERR:###### Get max pass window fail, there is no any pass phase!!\n");
+ selb_mode = 0;
+ } else {
+ if (tuning_pass_num_max % 2) {
+ selb_mode = tuning_pass_start[i_mode] + (tuning_pass_num_max - 1) / 2;
+ } else {
+ selb_mode = tuning_pass_start[i_mode] + (tuning_pass_num_max) / 2;
+ if (shif_left_flg) {
+ selb_mode = _bits_vct_get_left_index(selb_mode);
+ pr_debug("BHT MSG:shift left index\n");
+ }
+ }
+ selb_mode = TRUNING_RING_IDX(selb_mode);
+ }
+ if (pmax_pass_win)
+ *pmax_pass_win = tuning_pass_num_max;
+
+ return selb_mode;
+}
+
+
+int get_best_window_phase(u32 vct, int *pmax_pass_win)
+{
+ return _get_best_window_phase(vct, pmax_pass_win, 0);
+}
+
+static int _ggc_get_suitable_selb_for_next_tuning(struct sdhci_host *host)
+{
+ int selb = 0;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ u32 inj_tx_selb = BIT_PASS_MASK;
+
+ if (selx_failure_point_exist(vendor_host->ggc.ggc_cmd_tx_selb_failed_range)) {
+ selb = vendor_host->ggc.ggc_sw_selb_tuning_first_selb;
+ } else {
+ pr_debug("BHT MSG:manual inject for all pass case\n");
+ if (is_bus_mode_sdr104(host))
+ inj_tx_selb &= SDR104_MANUAL_INJECT;
+ else
+ inj_tx_selb &= SDR50_MANUAL_INJECT;
+
+ pr_debug("BHT MSG:manual inject for all pass case, inj_tx_selb=0x%x\n",
+ inj_tx_selb);
+ selb = get_best_window_phase(inj_tx_selb, NULL);
+ pr_debug("BHT MSG:select selb %d for all pass case\n", selb);
+ }
+ return selb;
+}
+
+static int ggc_get_tuning_cnt_from_buffer(struct sdhci_host *host)
+{
+ int cnt = 0;
+ u8 data[512];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ get_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+ cnt = (int)cfg_read_bits_ofs_mask(data, &vendor_host->ggc.cmd19_cnt_cfg);
+
+ pr_debug("BHT MSG:tuning cnt=%d\n", cnt);
+ return cnt;
+}
+
+bool ggc_hw_inject_ext(struct sdhci_host *host, bool *card_status,
+ u32 sel200, u32 sel100, bool writetobh201)
+{
+ bool ret = TRUE;
+ u8 data[512];
+ struct t_gg_reg_strt gg_reg_arr[10];
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ u32 i = 0;
+ u32 reg;
+
+ pr_debug("BHT MSG:%s sel200:%xh,sel100:%xh\n", __func__, sel200, sel100);
+ get_gg_reg_cur_val(&vendor_host->ggc, data, 64);
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.inject_failure_for_tuning_enable_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.inject_failure_for_200m_tuning_cfg,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.inject_failure_for_100m_tuning_cfg,
+ sizeof(struct t_gg_reg_strt));
+ gg_reg_arr[0].value = 1;
+ gg_reg_arr[1].value = sel200;
+ gg_reg_arr[2].value = sel100;
+
+ chg_gg_reg_cur_val(&vendor_host->ggc, data, gg_reg_arr, 3, TRUE);
+ if (writetobh201)
+ ret = gg_emulator_write_ext(host, card_status, data, 512);
+ else {
+ pr_debug("BHT MSG:%s: dump config data instead write to bh201\n", __func__);
+ for (i = 0; i < 128; i++) {
+ memcpy(®, data+i*sizeof(u32), sizeof(u32));
+ pr_debug("BHT MSG: ggc_reg32[%03d]=0x%08x\n", i, reg);
+ }
+ }
+ return ret;
+}
+
+bool _ggc_hw_inject_may_recursive(struct sdhci_host *host, u32 sel200,
+ u32 sel100, int max_recur, bool writetobh201)
+{
+ bool ret = TRUE, card_status = TRUE;
+ int selb = BIT_PASS_MASK;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ ret = ggc_hw_inject_ext(host, &card_status, vendor_host->ggc.ggc_cmd_tx_selb_failed_range,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range, writetobh201);
+ pr_debug("BHT MSG:ret:%x\n", ret);
+ if ((ret == FALSE) && (card_status == FALSE)) {
+ pr_debug("BHT MSG:inject again when hw inject\n");
+ selb &= ~GENERATE_IDX_VALUE(vendor_host->ggc.ggc_sw_selb_tuning_first_selb);
+ tx_selb_inject_policy(host, selb);
+ _ggc_update_cur_setting_for_sw_selb_tuning(host,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range);
+
+ if (((11 - get_bit_number(vendor_host->ggc.ggc_cmd_tx_selb_failed_range)) >= 5)) {
+ pr_err("BHT ERR:pass windows too small,reinit recursive\n");
+ return FALSE;
+ }
+
+ if (max_recur--)
+ return _ggc_hw_inject_may_recursive(host,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range, max_recur, writetobh201);
+ else
+ return FALSE;
+ } else
+ return TRUE;
+}
+
+bool ggc_hw_inject_may_recursive(struct sdhci_host *host, u32 sel200,
+ u32 sel100, bool writetobh201)
+{
+ return _ggc_hw_inject_may_recursive(host, sel200, sel100, 4, writetobh201);
+}
+
+bool get_next_dll_voltage(int cur, int *next, u32 *dll_voltage_unlock_cnt,
+ int *dll_voltage_scan_map)
+{
+ int min_idx = 0, cur_cnt = 0, next_cnt = 0;
+ int cur_flg = 0;
+ int i = 0;
+ u8 ret = 0;
+
+ pr_warn("BHT WARN:dll_voltage_unlock_cnt:%x %x %x %x\n",
+ dll_voltage_unlock_cnt[0], dll_voltage_unlock_cnt[1],
+ dll_voltage_unlock_cnt[2], dll_voltage_unlock_cnt[3]);
+ pr_warn("BHT WARN:dll_voltage_scan_map:%x %x %x %x\n",
+ dll_voltage_scan_map[0], dll_voltage_scan_map[1],
+ dll_voltage_scan_map[2], dll_voltage_scan_map[3]);
+ for (i = 1; i < 4; i++) {
+ if (cur_flg == 0) {
+ if (dll_voltage_scan_map[(cur + i) % 4] != 0)
+ continue;
+ cur_cnt = dll_voltage_unlock_cnt[(cur + i) % 4];
+ cur_flg = 1;
+ min_idx = (cur + i) % 4;
+ continue;
+ } else {
+ if (dll_voltage_scan_map[(cur + i) % 4] != 0)
+ continue;
+ next_cnt = dll_voltage_unlock_cnt[(cur + i) % 4];
+ if (cur_cnt > next_cnt) {
+ cur_cnt = next_cnt;
+ min_idx = (cur + i) % 4;
+ }
+ }
+ }
+ if (cur_flg == 0) {
+ pr_err("BHT ERR:no find available voltage\n");
+ ret = FALSE;
+ } else {
+ *next = min_idx;
+ pr_err("BHT ERR:next available voltage %d\n", min_idx);
+ ret = TRUE;
+ }
+ return ret;
+}
+
+bool ggc_sw_calc_tuning_result(struct sdhci_host *host, bool *card_status,
+ bool *read_status, u32 *tx_selb, u32 *all_selb, u64 *raw_tx_selb)
+{
+ bool ret = FALSE;
+ bool card_ret = FALSE;
+ bool read_ret = FALSE;
+ u32 selb_status_tx_low32 = 0, selb_status_tx_high32 = 0;
+ u32 selb_status_ggc_low32 = 0, selb_status_ggc_high32 = 0;
+ struct t_gg_reg_strt gg_reg_arr[8] = {{0}};
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+
+ memcpy(&gg_reg_arr[0], &vendor_host->ggc.pha_stas_tx_low32,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[1], &vendor_host->ggc.pha_stas_tx_high32,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[2], &vendor_host->ggc.pha_stas_rx_low32,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[3], &vendor_host->ggc.pha_stas_rx_high32,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[4], &vendor_host->ggc.dll_sela_after_mask,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[5], &vendor_host->ggc.dll_selb_after_mask,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[6], &vendor_host->ggc.dll_delay_100m_backup,
+ sizeof(struct t_gg_reg_strt));
+ memcpy(&gg_reg_arr[7], &vendor_host->ggc.dll_delay_200m_backup,
+ sizeof(struct t_gg_reg_strt));
+
+ ret = ggc_read_registers_ext(host, &card_ret, &read_ret, gg_reg_arr, 8);
+ if (read_ret == TRUE) {
+ selb_status_tx_low32 = gg_reg_arr[0].value;
+ pr_debug("BHT MSG:[205-236]:\n");
+ log_bin(selb_status_tx_low32);
+ selb_status_tx_high32 = gg_reg_arr[1].value;
+ pr_debug("BHT MSG:[237-268]:\n");
+ log_bin(selb_status_tx_high32);
+ selb_status_ggc_low32 = gg_reg_arr[2].value;
+ pr_debug("BHT MSG:[14-45]:\n");
+ log_bin(selb_status_ggc_low32);
+ selb_status_ggc_high32 = gg_reg_arr[3].value;
+ pr_debug("BHT MSG:[46-77]:\n");
+ log_bin(selb_status_ggc_high32);
+ pr_debug("BHT MSG:dll sela after mask=%xh", gg_reg_arr[4].value);
+ pr_debug("BHT MSG:dll selb after mask=%xh", gg_reg_arr[5].value);
+
+ if (raw_tx_selb) {
+ *raw_tx_selb = gg_reg_arr[1].value;
+ (*raw_tx_selb) <<= 32;
+ *raw_tx_selb += gg_reg_arr[0].value;
+ pr_debug("BHT MSG:raw_tx_selb:%llxh\n", *raw_tx_selb);
+ }
+
+ if (tx_selb) {
+ gen_array_data(gg_reg_arr[0].value, gg_reg_arr[1].value,
+ tx_selb);
+ pr_debug("BHT MSG:tx_selb:%xh\n", *tx_selb);
+ }
+ if (all_selb) {
+ gen_array_data(gg_reg_arr[2].value, gg_reg_arr[3].value,
+ all_selb);
+ pr_debug("BHT MSG:all_selb:%xh\n", *all_selb);
+ }
+ }
+
+ if (read_status)
+ (*read_status) = read_ret;
+ if (card_status)
+ (*card_status) = card_ret;
+
+ if (card_status && read_status)
+ pr_debug("BHT MSG:card_status,read_status:%x %x\n", *card_status, *read_status);
+ return ret;
+}
+
+bool _ggc_calc_cur_sela_tuning_result(struct sdhci_host *host, int cur_sela, int start_selb)
+{
+ bool read_status = FALSE;
+ bool card_status = FALSE;
+ bool ret = TRUE;
+ u32 tx_selb, all_selb;
+ u64 raw_tx_selb = 0;
+ bool retuning_flg = FALSE;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ int selb;
+ struct ggc_platform_t *ggc = &vendor_host->ggc;
+ enum tuning_stat_et *psela_tuning_result = ggc->ggc_sela_tuning_result;
+
+ ret = ggc_sw_calc_tuning_result(host, &card_status,
+ &read_status, &tx_selb, &all_selb, &raw_tx_selb);
+
+ if (card_status == FALSE) {
+ if (read_status == TRUE) {
+ selb = get_selb_failure_point(start_selb, raw_tx_selb,
+ ggc_get_tuning_cnt_from_buffer(host));
+ pr_debug("BHT MSG:inject selb %03x for CMD7 read timeout\n", selb);
+ tx_selb_inject_policy(host, selb);
+ } else {
+ pr_debug("BHT MSG:%s dll:%xh read status failed\n",
+ __func__, cur_sela);
+ }
+ ret = FALSE;
+ goto exit;
+ } else {
+ if (read_status == TRUE) {
+ if (selx_failure_point_exist(tx_selb)) {
+ if ((11-get_bit_number(tx_selb)) <= 3) {
+ tx_selb_inject_policy(host, tx_selb);
+ all_selb_failed_tb_update(host, cur_sela, all_selb);
+ tx_selb_failed_tb_update(host, cur_sela, tx_selb);
+ tx_selb_failed_history_update(host, tx_selb);
+ } else if (get_bit_number(tx_selb) == 0) {
+ selb = get_selb_failure_point(start_selb, raw_tx_selb,
+ ggc_get_tuning_cnt_from_buffer(host));
+ tx_selb_inject_policy(host, selb);
+ all_selb_failed_tb_update(host, cur_sela, all_selb);
+ tx_selb_failed_tb_update(host, cur_sela, selb);
+ tx_selb_failed_history_update(host, selb);
+ retuning_flg = TRUE;
+ } else {
+ tx_selb_inject_policy(host, tx_selb);
+ all_selb_failed_tb_update(host, cur_sela, all_selb);
+ tx_selb_failed_tb_update(host, cur_sela, tx_selb);
+ tx_selb_failed_history_update(host, tx_selb);
+ retuning_flg = TRUE;
+ }
+
+ _ggc_update_cur_setting_for_sw_selb_tuning(host,
+ ggc->ggc_cmd_tx_selb_failed_range);
+ ggc_hw_inject_may_recursive(host, ggc->ggc_cmd_tx_selb_failed_range,
+ ggc->ggc_cmd_tx_selb_failed_range, TRUE);
+ } else {
+ all_selb_failed_tb_update(host, cur_sela, all_selb);
+ tx_selb_failed_tb_update(host, cur_sela, tx_selb);
+ tx_selb_failed_history_update(host, tx_selb);
+ }
+
+ if (retuning_flg == TRUE) {
+ pr_debug("BHT MSG: %s dll:%xh need retuning\n",
+ __func__, cur_sela);
+ psela_tuning_result[cur_sela] = RETUNING_CASE;
+ } else {
+ pr_debug("BHT MSG: %s dll:%xh pass\n",
+ __func__, cur_sela);
+ psela_tuning_result[cur_sela] = OUTPUT_PASS_TYPE;
+ }
+ } else {
+ psela_tuning_result[cur_sela] = READ_STATUS_FAIL_TYPE;
+ all_selb_failed_tb_update(host, cur_sela, 0);
+ pr_debug("BHT MSG:== %s dll:%xh read status failed ==\n",
+ __func__, cur_sela);
+ }
+ }
+exit:
+ return ret;
+}
+static int sdhci_bht_sdr104_execute_tuning(struct sdhci_host *host, u32 opcode)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ return sdhci_msm_bayhub_execute_tuning(mmc, opcode);
+}
+
+static int sd_tuning_sw(struct sdhci_host *host)
+{
+ int ret = 0;
+
+ if (is_bus_mode_sdr104(host))
+ ret = sdhci_bht_sdr104_execute_tuning(host, 0x13);
+ else
+ ret = sdhci_bht_sdr50_execute_tuning(host, 0x13);
+
+ return ret;
+}
+
+static bool sd_gg_tuning_status(struct sdhci_host *host,
+ u32 *tx_selb, u32 *all_selb, u64 *raw_tx_selb,
+ bool *status_ret, bool *first_cmd19_status)
+{
+ bool ret = TRUE;
+ int err = sd_tuning_sw(host);
+
+ ret = err == 0 ? TRUE : FALSE;
+ if (err == -ETIMEDOUT) {
+ ret = FALSE;
+ if (first_cmd19_status)
+ *first_cmd19_status = false;
+ goto exit;
+ }
+
+ if (status_ret) {
+ *status_ret =
+ gg_tuning_result(host, tx_selb, all_selb,
+ raw_tx_selb);
+ } else {
+ gg_tuning_result(host, 0, 0, 0);
+ }
+
+exit:
+ return ret;
+}
+
+static bool ggc_sd_tuning(struct sdhci_host *host,
+ bool *first_cmd19_status)
+{
+ bool ret = TRUE;
+ int err = sd_tuning_sw(host);
+
+ ret = err == 0 ? TRUE : FALSE;
+ if (err == -ETIMEDOUT) {
+ ret = FALSE;
+ if (first_cmd19_status)
+ *first_cmd19_status = false;
+ goto exit;
+ }
+
+exit:
+ return ret;
+}
+
+static bool _ggc_output_tuning(struct sdhci_host *host, u8 *selb_pass_win)
+{
+ int cur_sela = 0, dll_sela_cnt = 0;
+ int dll_sela_basis = 0;
+ bool ret = FALSE;
+ u8 win_tb[12] = { 0 };
+ u8 win_mid = 0;
+ u8 win_max = 0;
+ u32 tx_tmp = 0;
+ int target_sela = 0;
+ int target_selb = 0;
+ u32 all_sela, tx_selb, all_selb;
+ u64 raw_tx_selb;
+ bool status_ret = FALSE;
+ int cur_selb = 0;
+ int tuning_error_type[16] = { 0 };
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ struct ggc_platform_t *ggc = &vendor_host->ggc;
+ enum tuning_stat_et *psela_tuning_result = ggc->ggc_sela_tuning_result;
+ int i = 0;
+ u32 idx_r, idx_c;
+ u32 min_pos = 0;
+ u32 all_selb_ar[TUNING_PHASE_SIZE] = { 0 };
+ u32 pass_cnt[TUNING_PHASE_SIZE] = { 0 };
+ u32 cfg = 0;
+ int rescan_selb_cnt = 0;
+ int returning_selb_cnt = 0;
+ bool first_cmd19_sta = TRUE;
+ int next = 0;
+ bool card_status = TRUE;
+ int selb = BIT_PASS_MASK;
+ u8 all_str[TUNING_PHASE_SIZE + 1], tx_str[TUNING_PHASE_SIZE + 1];
+
+ ggc->driver_strength_reinit_flg = 0;
+ vendor_host->ggc.dll_unlock_reinit_flg = 0;
+ dll_sela_basis = get_config_sela_setting(host);
+ cur_selb = get_config_selb_setting(host);
+
+ if (ggc->tuning_cmd7_timeout_reinit_flg) {
+ ggc->tuning_cmd7_timeout_reinit_flg = 0;
+ dll_sela_basis = vendor_host->ggc.ggc_cur_sela;
+ cur_selb = vendor_host->ggc.ggc_sw_selb_tuning_first_selb;
+ pr_debug
+ ("BHT MSG:Tuning start sela: 0x%x, selb: 0x%x where CMD7 timeout\n",
+ dll_sela_basis, cur_selb);
+ }
+
+ for (dll_sela_cnt = 0; dll_sela_cnt < TUNING_PHASE_SIZE; dll_sela_cnt++) {
+ cur_sela =
+ (dll_sela_cnt + dll_sela_basis) % TUNING_PHASE_SIZE;
+ ggc->ggc_cur_sela = cur_sela;
+ pr_debug("BHT MSG: %s select sela dll: %x, selb dll: %x\n",
+ __func__, cur_sela, cur_selb);
+ if (psela_tuning_result[cur_sela] != NO_TUNING) {
+ pr_debug("BHT MSG:sela tuning=%d already tuning,so skip it\n", cur_sela);
+ continue;
+ }
+rescan_selb:
+ host_cmddat_line_reset(host);
+
+ if (dll_sela_cnt == 0) {
+ if (!selx_failure_point_exist
+ (vendor_host->ggc.ggc_cmd_tx_selb_failed_range)) {
+ rescan_selb_cnt = 3;
+ pr_debug("BHT MSG:no need rescan case\n");
+ }
+ status_ret = FALSE;
+ ret = ggc_sd_tuning(host, &first_cmd19_sta);
+
+ if (first_cmd19_sta == FALSE) {
+ _check_bus_mode(host);
+ ggc->cur_bus_mode->dll_voltage_unlock_cnt
+ [ggc->cur_dll_voltage_idx]++;
+ ggc->dll_voltage_scan_map[ggc->cur_dll_voltage_idx] = 1;
+ if (get_next_dll_voltage(ggc->cur_dll_voltage_idx, &next,
+ ggc->cur_bus_mode->dll_voltage_unlock_cnt,
+ ggc->dll_voltage_scan_map) == TRUE)
+ ggc->cur_dll_voltage_idx = next;
+ else
+ ggc->cur_dll_voltage_idx =
+ (ggc->cur_dll_voltage_idx + 1) % 4;
+
+ pr_err("BHT ERR:first cmd19 timeout\n");
+ vendor_host->ggc.dll_unlock_reinit_flg = 1;
+ _ggc_reset_tuning_result_for_dll(host);
+ ret = FALSE;
+ goto exit;
+ }
+ } else if ((is_bus_mode_sdr104(host) == FALSE)
+ && vendor_host->ggc.sdr50_notuning_sela_inject_flag == 1
+ && !GET_IDX_VALUE(vendor_host->ggc.sdr50_notuning_sela_rx_inject,
+ cur_sela)) {
+ pr_debug("BHT MSG:skip %d\n", cur_sela);
+ tuning_error_type[cur_sela] = READ_STATUS_FAIL_TYPE;
+ goto cur_sela_failed;
+ } else {
+ ret = ggc_set_output_tuning_phase_ext(host, &card_status,
+ cur_sela, update_selb(host, cur_selb));
+ if (ret == FALSE || card_status == FALSE) {
+ pr_err
+ ("BHT ERR: output_tuning fail at phase %d,ret=%d,card_status=%d\n",
+ cur_sela, ret, card_status);
+ if (card_status == FALSE) {
+ selb &= ~GENERATE_IDX_VALUE(cur_selb);
+ pr_err("BHT ERR:inject selb %d for update sela/selb fail\n",
+ selb);
+ tx_selb_inject_policy(host, selb);
+ _ggc_update_cur_setting_for_sw_selb_tuning(host,
+ ggc->ggc_cmd_tx_selb_failed_range);
+ ggc_hw_inject_may_recursive(host,
+ ggc->ggc_cmd_tx_selb_failed_range,
+ ggc->ggc_cmd_tx_selb_failed_range, TRUE);
+
+ if (((11 - get_bit_number(
+ ggc->ggc_cmd_tx_selb_failed_range)) >= 5)) {
+ u8 current_ds = (u8)(ggc->_gg_reg_cur[15] >> 28);
+
+ pr_err("BHT ERR:pass windows too small\n");
+
+ ggc->driver_strength_reinit_flg =
+ current_ds < 7 ? current_ds + 1 : 7;
+
+ ggc->_gg_reg_cur[15] &= 0x0F0FFFFF;
+ ggc->_gg_reg_cur[15] |=
+ (ggc->driver_strength_reinit_flg << 28)
+ | (ggc->driver_strength_reinit_flg << 20);
+ ret = FALSE;
+
+ goto exit;
+ }
+ cur_selb = _ggc_get_suitable_selb_for_next_tuning(host);
+ }
+ psela_tuning_result[cur_sela] = RETUNING_CASE;
+ goto retuning_case;
+ }
+ ret = ggc_sd_tuning(host, NULL);
+ }
+
+ if (ret == FALSE) {
+ pr_err("BHT ERR:Error when output_tuning, fail at phase %d\n",
+ cur_sela);
+ psela_tuning_result[cur_sela] = TUNING_FAIL_TYPE;
+ all_selb_failed_tb_update(host, cur_sela, 0);
+ continue;
+ }
+
+ ret = _ggc_calc_cur_sela_tuning_result(host, cur_sela, cur_selb);
+
+ if ((11 - get_bit_number(vendor_host->ggc.ggc_cmd_tx_selb_failed_range)) >= 5) {
+ u8 current_ds = (u8)(ggc->_gg_reg_cur[15] >> 28);
+
+ pr_err("BHT ERR:pass windows too small after result calculate, reinit\n");
+ if (current_ds < 7)
+ ggc->driver_strength_reinit_flg = current_ds + 1;
+ else
+ ggc->driver_strength_reinit_flg = 7;
+
+ ggc->_gg_reg_cur[15] &= 0x0F0FFFFF;
+ ggc->_gg_reg_cur[15] |=
+ (ggc->driver_strength_reinit_flg << 28)
+ | (ggc->driver_strength_reinit_flg << 20);
+ ret = FALSE;
+ pr_err("BHT ERR:will change driver strength from %d to %d\n",
+ current_ds,
+ ggc->driver_strength_reinit_flg);
+ goto exit;
+ }
+
+ if (ret == FALSE) {
+ pr_err("BHT ERR:cmd7 timeout fail,reinit\n");
+ vendor_host->ggc.tuning_cmd7_timeout_reinit_flg = 1;
+
+ _ggc_update_cur_setting_for_sw_selb_tuning(host,
+ ggc->ggc_cmd_tx_selb_failed_range);
+ ggc_hw_inject_may_recursive(host, ggc->ggc_cmd_tx_selb_failed_range,
+ ggc->ggc_cmd_tx_selb_failed_range, FALSE);
+ if ((11 - get_bit_number(vendor_host->ggc.ggc_cmd_tx_selb_failed_range))
+ >= 5) {
+ u8 current_ds = (u8)(ggc->_gg_reg_cur[15] >> 28);
+
+ pr_err("BHT ERR:pass windows too small, driver strength reinit\n");
+
+ vendor_host->ggc.tuning_cmd7_timeout_reinit_flg = 0;
+
+ ggc->driver_strength_reinit_flg =
+ current_ds < 7 ? current_ds + 1 : 7;
+
+ ggc->_gg_reg_cur[15] &= 0x0F0FFFFF;
+ ggc->_gg_reg_cur[15] |=
+ (ggc->driver_strength_reinit_flg << 28)
+ | (ggc->driver_strength_reinit_flg << 20);
+ ret = FALSE;
+ pr_err("BHT ERR:will change driver strength from %d to %d\n",
+ current_ds,
+ ggc->driver_strength_reinit_flg);
+ goto exit;
+ }
+ goto exit;
+ }
+
+ cur_selb = _ggc_get_suitable_selb_for_next_tuning(host);
+
+ pr_debug("BHT MSG: output sela:%xh pass\n", cur_sela);
+ rescan_selb_cnt++;
+ if ((rescan_selb_cnt < 3) &&
+ (selx_failure_point_exist(vendor_host->ggc.ggc_cmd_tx_selb_failed_range))) {
+ pr_debug("BHT MSG:rescan cnt %d, ggc_cmd_tx_selb_failed_range=0x%x\n",
+ rescan_selb_cnt,
+ vendor_host->ggc.ggc_cmd_tx_selb_failed_range);
+ goto rescan_selb;
+ }
+
+retuning_case:
+ if (psela_tuning_result[cur_sela] == RETUNING_CASE) {
+ returning_selb_cnt++;
+ if (returning_selb_cnt < 3) {
+ rescan_selb_cnt = 0;
+ pr_debug("BHT MSG:retuning %d\n", rescan_selb_cnt);
+ goto rescan_selb;
+ } else {
+ psela_tuning_result[cur_sela] = SET_PHASE_FAIL_TYPE;
+ all_selb_failed_tb_update(host, cur_sela, 0);
+ continue;
+ }
+ }
+
+ goto next_dll_sela;
+
+cur_sela_failed:
+ pr_debug("BHT MSG:read status failedB\n");
+ all_selb = 0;
+ all_selb_failed_tb_update(host, cur_sela, all_selb);
+ pr_debug("BHT MSG: output sela:%xh failed ===\n", cur_sela);
+next_dll_sela:
+ if ((is_bus_mode_sdr104(host) == FALSE)
+ && vendor_host->ggc.sdr50_notuning_crc_error_flag) {
+ u32 fp = 0;
+
+ fp = GENERATE_IDX_VALUE(cur_sela);
+ fp |= GENERATE_IDX_VALUE((cur_sela + 1) % TUNING_PHASE_SIZE);
+ fp |= GENERATE_IDX_VALUE((cur_sela + 10) % TUNING_PHASE_SIZE);
+ vendor_host->ggc.sdr50_notuning_sela_rx_inject &= ~fp;
+ vendor_host->ggc.sdr50_notuning_sela_inject_flag = 1;
+ pr_debug("BHT MSG:sdr50_notuning_sela_rx_inject:%x\n",
+ vendor_host->ggc.sdr50_notuning_sela_rx_inject);
+ ret = FALSE;
+ goto exit;
+ };
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ phase_str(all_str, all_selb_failed_tb_get(host, i));
+ phase_str(tx_str, tx_selb_failed_tb_get(host, i));
+ pr_debug
+ ("BHT MSG:DLL sela[%x] all selb: %s tx selb: %s [%xh,%xh] %s\n",
+ i, all_str, tx_str,
+ all_selb_failed_tb_get(host, i),
+ tx_selb_failed_tb_get(host, i),
+ op_dbg_str[tuning_error_type[i]]);
+
+ }
+
+ /* remove margin passed all selb phase */
+ for (i = 0; i < TUNING_PHASE_SIZE; i++)
+ all_selb_ar[i] = all_selb_failed_tb_get(host, i);
+
+ /* calculate cumulation of diagonal bits */
+ for (idx_c = 0; idx_c < TUNING_PHASE_SIZE; idx_c++) {
+ for (idx_r = 0; idx_r < TUNING_PHASE_SIZE;
+ idx_r++) {
+ pass_cnt[idx_c] += ((all_selb_ar[idx_r] >>
+ ((idx_r + idx_c) % TUNING_PHASE_SIZE)) & 0x01);
+ }
+ if (idx_c == 0)
+ min_pos = 0;
+ else if (pass_cnt[idx_c] < pass_cnt[min_pos])
+ min_pos = idx_c;
+ }
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ all_selb_ar[i] &= ~(1 << (min_pos + i) % TUNING_PHASE_SIZE);
+ all_selb_failed_tb_update(host, i, all_selb_ar[i]);
+ }
+
+ tx_selb = tx_selb_failed_history_get(host);
+
+ pr_debug("inject sw selb & merge tx_selb failed point to all_selb\n");
+ for (i = 0; i < TUNING_PHASE_SIZE; i++)
+ all_selb_failed_tb_update(host, i, tx_selb);
+
+ pr_debug("BHT MSG:inject sw sela failed point to all_selb\n");
+ if (is_bus_mode_sdr104(host))
+ cfg = 0x7ff;
+ else
+ cfg = 0x7ff;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ if (GET_IDX_VALUE(cfg, i) == 0)
+ all_selb_failed_tb_update(host, i, 0);
+ }
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ phase_str(all_str, all_selb_failed_tb_get(host, i));
+ phase_str(tx_str, tx_selb_failed_tb_get(host, i));
+ pr_debug("BHT MSG:DLL sela[%x] all selb: %s tx selb: %s [%xh,%xh] %s\n",
+ i, all_str, tx_str,
+ all_selb_failed_tb_get(host, i),
+ tx_selb_failed_tb_get(host, i),
+ op_dbg_str[tuning_error_type[i]]);
+ }
+
+ tx_selb = tx_selb_failed_history_get(host);
+ tx_selb &= 0x7ff;
+ tx_tmp = tx_selb;
+
+ pr_debug("BHT MSG:---selb merge---\n");
+ if ((tx_selb&0x7ff) == 0x7ff) {
+ if (is_bus_mode_sdr104(host)) {
+ u32 cfg = SDR104_MANUAL_INJECT;
+
+ tx_selb &= cfg;
+ pr_debug("tx selb:%xh SDR104 inject:%xh merge tx_selb:%xh\n",
+ tx_tmp, cfg, tx_selb);
+ } else {
+ u32 cfg = SDR50_MANUAL_INJECT;
+
+ tx_selb &= cfg;
+ pr_debug("tx selb:%xh SDR50 inject:%xh merge tx_selb:%xh\n",
+ tx_tmp, cfg, tx_selb);
+ }
+ }
+
+ if (tx_selb == 0) {
+ pr_err("all failed, force fixed phase sela selb to default\n");
+ target_selb =
+ get_config_selb_setting(host);
+ target_sela =
+ get_config_sela_setting(host);
+ goto final;
+ }
+ phase_str(win_tb, tx_selb);
+ pr_debug("BHT MSG: tx selb[%xh] 11 bit: %s\n",
+ tx_selb, win_tb);
+ bits_generate_array(win_tb, tx_selb);
+ chk_phase_window(win_tb, &win_mid, &win_max);
+ target_selb = win_mid;
+
+ all_sela = 0;
+
+ for (i = 0; i < TUNING_PHASE_SIZE; i++) {
+ u32 all_selb = all_selb_failed_tb_get(host, i);
+
+ phase_str(win_tb, all_selb);
+ pr_debug("BHT MSG: all_selb[%xh] 11 bit: %s\n",
+ all_selb, win_tb);
+ bits_generate_array(win_tb, all_selb);
+ chk_phase_window(win_tb, &win_mid,
+ &win_max);
+ *selb_pass_win = win_max;
+ if (all_selb & (1 << target_selb))
+ all_sela |= 1 << i;
+ }
+
+ phase_str(win_tb, all_sela);
+ pr_debug("BHT MSG: all_sela[%xh] 11 bit: %s\n",
+ all_sela, win_tb);
+ bits_generate_array(win_tb, all_sela);
+ chk_phase_window(win_tb, &win_mid, &win_max);
+ target_sela = win_mid;
+
+final:
+
+ gg_fix_output_tuning_phase(host, target_sela,
+ target_selb);
+
+ ret = sd_gg_tuning_status(host, &tx_selb,
+ &all_selb, &raw_tx_selb, &status_ret, NULL);
+ if (ret == FALSE) {
+ pr_err("Error when output_tuning, sd_tuning fail\n");
+ ret = FALSE;
+ goto exit;
+ }
+
+ /* use final pass windows */
+ phase_str(win_tb, all_selb);
+ pr_debug("BHT MSG: all_selb[%xh] 11 bit: %s\n",
+ all_selb, win_tb);
+ bits_generate_array(win_tb, all_selb);
+ chk_phase_window(win_tb, &win_mid, &win_max);
+ *selb_pass_win = win_max;
+
+ vendor_host->ggc.selx_tuning_done_flag = 1;
+
+exit:
+ pr_debug("BHT MSG:exit:%s %d\n", __func__, ret);
+ return ret;
+}
+
+static int sdhci_bht_execute_tuning(struct mmc_host *mmc, u32 opcode)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *vendor_host = sdhci_pltfm_priv(pltfm_host);
+ u8 tw = 0;
+ int ret = 0;
+
+ if (vendor_host->ggc.bh201_used) {
+ pr_debug("BHT MSG:enter bht tuning\n");
+ if (host->clock < CORE_FREQ_100MHZ) {
+ pr_debug("BHT MSG:%d less 100Mhz,no tuning\n", host->clock);
+ return 0;
+ }
+
+ if (vendor_host->ggc.tuning_in_progress) {
+ pr_debug("BHT MSG:tuning_in_progress\n");
+ return 0;
+ }
+ vendor_host->ggc.tuning_in_progress = true;
+
+ if (vendor_host->ggc.selx_tuning_done_flag) {
+ pr_debug("BHT MSG:GGC tuning is done, just do vendor host tuning");
+ if (is_bus_mode_sdr104(host))
+ ret = sdhci_bht_sdr104_execute_tuning(host, 0x13);
+ else
+ ret = sdhci_bht_sdr50_execute_tuning(host, 0x13);
+ } else {
+ ret = !_ggc_output_tuning(host, &tw);
+ }
+ vendor_host->ggc.tuning_in_progress = false;
+ return ret;
+ } else
+ return sdhci_msm_bayhub_execute_tuning(vendor_host->mmc, opcode);
+}
+
+/*
+ * sdhci_msm_bayhub_hs400 - Calibrate the DLL for HS400 bus speed mode operation.
+ * This needs to be done for both tuning and enhanced_strobe mode.
+ * DLL operation is only needed for clock > 100MHz. For clock <= 100MHz
+ * fixed feedback clock is used.
+ */
+static void sdhci_msm_bayhub_hs400(struct sdhci_host *host, struct mmc_ios *ios)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ int ret;
+
+ if (host->clock > CORE_FREQ_100MHZ &&
+ (msm_bayhub_host->tuning_done || ios->enhanced_strobe) &&
+ !msm_bayhub_host->calibration_done) {
+ ret = sdhci_msm_bayhub_hs400_dll_calibration(host);
+ if (!ret)
+ msm_bayhub_host->calibration_done = true;
+ else
+ pr_err("%s: Failed to calibrate DLL for hs400 mode (%d)\n",
+ mmc_hostname(host->mmc), ret);
+ }
+}
+
+static void sdhci_msm_bayhub_set_uhs_signaling(struct sdhci_host *host,
+ unsigned int uhs)
+{
+ struct mmc_host *mmc = host->mmc;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ u16 ctrl_2;
+ u32 config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ /* Select Bus Speed Mode for host */
+ ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
+ switch (uhs) {
+ case MMC_TIMING_UHS_SDR12:
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
+ break;
+ case MMC_TIMING_UHS_SDR25:
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
+ break;
+ case MMC_TIMING_UHS_SDR50:
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
+ break;
+ case MMC_TIMING_MMC_HS400:
+ case MMC_TIMING_MMC_HS200:
+ case MMC_TIMING_UHS_SDR104:
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
+ break;
+ case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
+ ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
+ break;
+ }
+
+ /*
+ * When clock frequency is less than 100MHz, the feedback clock must be
+ * provided and DLL must not be used so that tuning can be skipped. To
+ * provide feedback clock, the mode selection can be any value less
+ * than 3'b011 in bits [2:0] of HOST CONTROL2 register.
+ */
+ if (host->clock <= CORE_FREQ_100MHZ) {
+ if (uhs == MMC_TIMING_MMC_HS400 ||
+ uhs == MMC_TIMING_MMC_HS200 ||
+ uhs == MMC_TIMING_UHS_SDR104)
+ ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
+ /*
+ * DLL is not required for clock <= 100MHz
+ * Thus, make sure DLL it is disabled when not required
+ */
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_DLL_RST;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+ config |= CORE_DLL_PDN;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_dll_config);
+
+ /*
+ * The DLL needs to be restored and CDCLP533 recalibrated
+ * when the clock frequency is set back to 400MHz.
+ */
+ msm_bayhub_host->calibration_done = false;
+ }
+
+ dev_dbg(mmc_dev(mmc), "%s: clock=%u uhs=%u ctrl_2=0x%x\n",
+ mmc_hostname(host->mmc), host->clock, uhs, ctrl_2);
+ sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
+
+ if (mmc->ios.timing == MMC_TIMING_MMC_HS400)
+ sdhci_msm_bayhub_hs400(host, &mmc->ios);
+}
+
+static int sdhci_msm_bayhub_set_pincfg(struct sdhci_msm_bayhub_host *msm_bayhub_host, bool level)
+{
+ struct platform_device *pdev = msm_bayhub_host->pdev;
+ int ret;
+
+ if (level)
+ ret = pinctrl_pm_select_default_state(&pdev->dev);
+ else
+ ret = pinctrl_pm_select_sleep_state(&pdev->dev);
+
+ return ret;
+}
+
+static int sdhci_msm_bayhub_set_vmmc(struct mmc_host *mmc)
+{
+ if (IS_ERR(mmc->supply.vmmc))
+ return 0;
+
+ return mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, mmc->ios.vdd);
+}
+
+static int msm_bayhub_toggle_vqmmc(struct sdhci_msm_bayhub_host *msm_bayhub_host,
+ struct mmc_host *mmc, bool level)
+{
+ int ret;
+ struct mmc_ios ios;
+
+ if (msm_bayhub_host->vqmmc_enabled == level)
+ return 0;
+
+ if (level) {
+ /* Set the IO voltage regulator to default voltage level */
+ if (msm_bayhub_host->caps_0 & CORE_3_0V_SUPPORT)
+ ios.signal_voltage = MMC_SIGNAL_VOLTAGE_330;
+ else if (msm_bayhub_host->caps_0 & CORE_1_8V_SUPPORT)
+ ios.signal_voltage = MMC_SIGNAL_VOLTAGE_180;
+
+ if (msm_bayhub_host->caps_0 & CORE_VOLT_SUPPORT) {
+ ret = mmc_regulator_set_vqmmc(mmc, &ios);
+ if (ret < 0) {
+ dev_err(mmc_dev(mmc), "%s: vqmmc set volgate failed: %d\n",
+ mmc_hostname(mmc), ret);
+ goto out;
+ }
+ }
+ ret = regulator_enable(mmc->supply.vqmmc);
+ } else {
+ ret = regulator_disable(mmc->supply.vqmmc);
+ }
+
+ if (ret)
+ dev_err(mmc_dev(mmc), "%s: vqmm %sable failed: %d\n",
+ mmc_hostname(mmc), level ? "en":"dis", ret);
+ else
+ msm_bayhub_host->vqmmc_enabled = level;
+out:
+ return ret;
+}
+
+static int msm_bayhub_config_vqmmc_mode(struct sdhci_msm_bayhub_host *msm_bayhub_host,
+ struct mmc_host *mmc, bool hpm)
+{
+ int load, ret;
+
+ load = hpm ? MMC_VQMMC_MAX_LOAD_UA : 0;
+ ret = regulator_set_load(mmc->supply.vqmmc, load);
+ if (ret)
+ dev_err(mmc_dev(mmc), "%s: vqmmc set load failed: %d\n",
+ mmc_hostname(mmc), ret);
+ return ret;
+}
+
+static int sdhci_msm_bayhub_set_vqmmc(struct sdhci_msm_bayhub_host *msm_bayhub_host,
+ struct mmc_host *mmc, bool level)
+{
+ int ret;
+ bool always_on;
+
+ if (IS_ERR(mmc->supply.vqmmc) ||
+ (mmc->ios.power_mode == MMC_POWER_UNDEFINED))
+ return 0;
+ /*
+ * For eMMC don't turn off Vqmmc, Instead just configure it in LPM
+ * and HPM modes by setting the corresponding load.
+ *
+ * Till eMMC is initialized (i.e. always_on == 0), just turn on/off
+ * Vqmmc. Vqmmc gets turned off only if init fails and mmc_power_off
+ * gets invoked. Once eMMC is initialized (i.e. always_on == 1),
+ * Vqmmc should remain ON, So just set the load instead of turning it
+ * off/on.
+ */
+ always_on = !mmc_card_is_removable(mmc) &&
+ mmc->card && mmc_card_mmc(mmc->card);
+
+ if (always_on)
+ ret = msm_bayhub_config_vqmmc_mode(msm_bayhub_host, mmc, level);
+ else
+ ret = msm_bayhub_toggle_vqmmc(msm_bayhub_host, mmc, level);
+
+ return ret;
+}
+
+static inline void sdhci_msm_bayhub_init_pwr_irq_wait(struct sdhci_msm_bayhub_host *msm_bayhub_host)
+{
+ init_waitqueue_head(&msm_bayhub_host->pwr_irq_wait);
+}
+
+static inline void sdhci_msm_bayhub_complete_pwr_irq_wait(
+ struct sdhci_msm_bayhub_host *msm_bayhub_host)
+{
+ wake_up(&msm_bayhub_host->pwr_irq_wait);
+}
+
+/*
+ * sdhci_msm_bayhub_check_power_status API should be called when registers writes
+ * which can toggle sdhci IO bus ON/OFF or change IO lines HIGH/LOW happens.
+ * To what state the register writes will change the IO lines should be passed
+ * as the argument req_type. This API will check whether the IO line's state
+ * is already the expected state and will wait for power irq only if
+ * power irq is expected to be triggered based on the current IO line state
+ * and expected IO line state.
+ */
+static void sdhci_msm_bayhub_check_power_status(struct sdhci_host *host, u32 req_type)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ bool done = false;
+ u32 val = SWITCHABLE_SIGNALING_VOLTAGE;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ pr_debug("%s: %s: request %d curr_pwr_state %x curr_io_level %x\n",
+ mmc_hostname(host->mmc), __func__, req_type,
+ msm_bayhub_host->curr_pwr_state, msm_bayhub_host->curr_io_level);
+
+ /*
+ * The power interrupt will not be generated for signal voltage
+ * switches if SWITCHABLE_SIGNALING_VOLTAGE in MCI_GENERICS is not set.
+ * Since sdhci-msm_bayhub-v5, this bit has been removed and SW must consider
+ * it as always set.
+ */
+ if (!msm_bayhub_host->mci_removed)
+ val = msm_bayhub_host_readl(msm_bayhub_host, host,
+ msm_bayhub_offset->core_generics);
+ if ((req_type & REQ_IO_HIGH || req_type & REQ_IO_LOW) &&
+ !(val & SWITCHABLE_SIGNALING_VOLTAGE)) {
+ return;
+ }
+
+ /*
+ * The IRQ for request type IO High/LOW will be generated when -
+ * there is a state change in 1.8V enable bit (bit 3) of
+ * SDHCI_HOST_CONTROL2 register. The reset state of that bit is 0
+ * which indicates 3.3V IO voltage. So, when MMC core layer tries
+ * to set it to 3.3V before card detection happens, the
+ * IRQ doesn't get triggered as there is no state change in this bit.
+ * The driver already handles this case by changing the IO voltage
+ * level to high as part of controller power up sequence. Hence, check
+ * for host->pwr to handle a case where IO voltage high request is
+ * issued even before controller power up.
+ */
+ if ((req_type & REQ_IO_HIGH) && !host->pwr) {
+ pr_debug("%s: do not wait for power IRQ that never comes, req_type: %d\n",
+ mmc_hostname(host->mmc), req_type);
+ return;
+ }
+ if ((req_type & msm_bayhub_host->curr_pwr_state) ||
+ (req_type & msm_bayhub_host->curr_io_level))
+ done = true;
+ /*
+ * This is needed here to handle cases where register writes will
+ * not change the current bus state or io level of the controller.
+ * In this case, no power irq will be triggerred and we should
+ * not wait.
+ */
+ if (!done) {
+ if (!wait_event_timeout(msm_bayhub_host->pwr_irq_wait,
+ msm_bayhub_host->pwr_irq_flag,
+ msecs_to_jiffies(MSM_PWR_IRQ_TIMEOUT_MS)))
+ dev_warn(&msm_bayhub_host->pdev->dev,
+ "%s: pwr_irq for req: (%d) timed out\n",
+ mmc_hostname(host->mmc), req_type);
+ }
+ pr_debug("%s: %s: request %d done\n", mmc_hostname(host->mmc),
+ __func__, req_type);
+}
+
+static void sdhci_msm_bayhub_dump_pwr_ctrl_regs(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset =
+ msm_bayhub_host->offset;
+
+ pr_err("%s: PWRCTL_STATUS: 0x%08x | PWRCTL_MASK: 0x%08x | PWRCTL_CTL: 0x%08x\n",
+ mmc_hostname(host->mmc),
+ msm_bayhub_host_readl(msm_bayhub_host, host, msm_bayhub_offset->core_pwrctl_status),
+ msm_bayhub_host_readl(msm_bayhub_host, host, msm_bayhub_offset->core_pwrctl_mask),
+ msm_bayhub_host_readl(msm_bayhub_host, host, msm_bayhub_offset->core_pwrctl_ctl));
+}
+
+static void sdhci_msm_bayhub_handle_pwr_irq(struct sdhci_host *host, int irq)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct mmc_host *mmc = host->mmc;
+ u32 irq_status, irq_ack = 0;
+ int retry = 10, ret;
+ u32 pwr_state = 0, io_level = 0;
+ u32 config;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset = msm_bayhub_host->offset;
+
+ irq_status = msm_bayhub_host_readl(msm_bayhub_host, host,
+ msm_bayhub_offset->core_pwrctl_status);
+ irq_status &= INT_MASK;
+
+ msm_bayhub_host_writel(msm_bayhub_host, irq_status, host,
+ msm_bayhub_offset->core_pwrctl_clear);
+
+ /*
+ * There is a rare HW scenario where the first clear pulse could be
+ * lost when actual reset and clear/read of status register is
+ * happening at a time. Hence, retry for at least 10 times to make
+ * sure status register is cleared. Otherwise, this will result in
+ * a spurious power IRQ resulting in system instability.
+ */
+ while (irq_status & msm_bayhub_host_readl(msm_bayhub_host, host,
+ msm_bayhub_offset->core_pwrctl_status)) {
+ if (retry == 0) {
+ pr_err("%s: Timedout clearing (0x%x) pwrctl status register\n",
+ mmc_hostname(host->mmc), irq_status);
+ sdhci_msm_bayhub_dump_pwr_ctrl_regs(host);
+ WARN_ON(1);
+ break;
+ }
+ msm_bayhub_host_writel(msm_bayhub_host, irq_status, host,
+ msm_bayhub_offset->core_pwrctl_clear);
+ retry--;
+ udelay(10);
+ }
+
+ /* Handle BUS ON/OFF*/
+ if (irq_status & CORE_PWRCTL_BUS_ON) {
+ if (msm_bayhub_host->ggc.bh201_used)
+ bh201_signal_voltage_on_off(host, 1);
+ pwr_state = REQ_BUS_ON;
+ io_level = REQ_IO_HIGH;
+ }
+ if (irq_status & CORE_PWRCTL_BUS_OFF) {
+ if (msm_bayhub_host->ggc.bh201_used)
+ bh201_signal_voltage_on_off(host, 0);
+ pwr_state = REQ_BUS_OFF;
+ io_level = REQ_IO_LOW;
+ }
+
+ if (pwr_state) {
+ ret = sdhci_msm_bayhub_set_vmmc(mmc);
+ if (!ret)
+ ret = sdhci_msm_bayhub_set_vqmmc(msm_bayhub_host, mmc,
+ pwr_state & REQ_BUS_ON);
+ if (!ret)
+ ret = sdhci_msm_bayhub_set_pincfg(msm_bayhub_host,
+ pwr_state & REQ_BUS_ON);
+ if (!ret)
+ irq_ack |= CORE_PWRCTL_BUS_SUCCESS;
+ else
+ irq_ack |= CORE_PWRCTL_BUS_FAIL;
+ }
+
+ /* Handle IO LOW/HIGH */
+ if (irq_status & CORE_PWRCTL_IO_LOW)
+ io_level = REQ_IO_LOW;
+
+ if (irq_status & CORE_PWRCTL_IO_HIGH)
+ io_level = REQ_IO_HIGH;
+
+ if (io_level)
+ irq_ack |= CORE_PWRCTL_IO_SUCCESS;
+
+ if (io_level && !IS_ERR(mmc->supply.vqmmc) && !pwr_state) {
+ ret = mmc_regulator_set_vqmmc(mmc, &mmc->ios);
+ if (ret < 0) {
+ dev_err(mmc_dev(mmc), "%s: IO_level setting failed(%d). signal_voltage: %d, vdd: %d irq_status: 0x%08x\n",
+ mmc_hostname(mmc), ret,
+ mmc->ios.signal_voltage, mmc->ios.vdd,
+ irq_status);
+ irq_ack |= CORE_PWRCTL_IO_FAIL;
+ }
+ }
+
+ /*
+ * The driver has to acknowledge the interrupt, switch voltages and
+ * report back if it succeeded or not to this register. The voltage
+ * switches are handled by the sdhci core, so just report success.
+ */
+ msm_bayhub_host_writel(msm_bayhub_host, irq_ack, host,
+ msm_bayhub_offset->core_pwrctl_ctl);
+
+ /*
+ * If we don't have info regarding the voltage levels supported by
+ * regulators, don't change the IO PAD PWR SWITCH.
+ */
+ if (msm_bayhub_host->caps_0 & CORE_VOLT_SUPPORT) {
+ u32 new_config;
+ /*
+ * We should unset IO PAD PWR switch only if the register write
+ * can set IO lines high and the regulator also switches to 3 V.
+ * Else, we should keep the IO PAD PWR switch set.
+ * This is applicable to certain targets where eMMC vccq supply
+ * is only 1.8V. In such targets, even during REQ_IO_HIGH, the
+ * IO PAD PWR switch must be kept set to reflect actual
+ * regulator voltage. This way, during initialization of
+ * controllers with only 1.8V, we will set the IO PAD bit
+ * without waiting for a REQ_IO_LOW.
+ */
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec);
+ new_config = config;
+
+ if ((io_level & REQ_IO_HIGH) &&
+ (msm_bayhub_host->caps_0 & CORE_3_0V_SUPPORT))
+ new_config &= ~CORE_IO_PAD_PWR_SWITCH;
+ else if ((io_level & REQ_IO_LOW) ||
+ (msm_bayhub_host->caps_0 & CORE_1_8V_SUPPORT))
+ new_config |= CORE_IO_PAD_PWR_SWITCH;
+
+ if (config ^ new_config)
+ writel_relaxed(new_config, host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec);
+ }
+
+ if (pwr_state)
+ msm_bayhub_host->curr_pwr_state = pwr_state;
+ if (io_level)
+ msm_bayhub_host->curr_io_level = io_level;
+
+ dev_dbg(mmc_dev(mmc), "%s: %s: Handled IRQ(%d), irq_status=0x%x, ack=0x%x\n",
+ mmc_hostname(msm_bayhub_host->mmc), __func__, irq, irq_status,
+ irq_ack);
+}
+
+static irqreturn_t sdhci_msm_bayhub_pwr_irq(int irq, void *data)
+{
+ struct sdhci_host *host = (struct sdhci_host *)data;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ sdhci_msm_bayhub_handle_pwr_irq(host, irq);
+ msm_bayhub_host->pwr_irq_flag = 1;
+ sdhci_msm_bayhub_complete_pwr_irq_wait(msm_bayhub_host);
+
+
+ return IRQ_HANDLED;
+}
+
+static unsigned int sdhci_msm_bayhub_get_max_clock(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct clk *core_clk = msm_bayhub_host->bulk_clks[0].clk;
+
+ return clk_round_rate(core_clk, ULONG_MAX);
+}
+
+static unsigned int sdhci_msm_bayhub_get_min_clock(struct sdhci_host *host)
+{
+ return SDHCI_MSM_MIN_CLOCK;
+}
+
+/**
+ * __sdhci_msm_bayhub_set_clock - sdhci_msm_bayhub clock control.
+ *
+ * Description:
+ * MSM controller does not use internal divider and
+ * instead directly control the GCC clock as per
+ * HW recommendation.
+ **/
+static void __sdhci_msm_bayhub_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ u16 clk;
+
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ /*
+ * MSM controller do not use clock divider.
+ * Thus read SDHCI_CLOCK_CONTROL and only enable
+ * clock with no divider value programmed.
+ */
+ clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ sdhci_enable_clk(host, clk);
+}
+
+/* sdhci_msm_bayhub_set_clock - Called with (host->lock) spinlock held. */
+static void sdhci_msm_bayhub_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (!clock) {
+ host->mmc->actual_clock = msm_bayhub_host->clk_rate = 0;
+ goto out;
+ }
+
+ sdhci_msm_bayhub_hc_select_mode(host);
+
+ msm_bayhub_set_clock_rate_for_bus_mode(host, clock);
+out:
+ __sdhci_msm_bayhub_set_clock(host, clock);
+}
+
+/*****************************************************************************\
+ * *
+ * MSM Command Queue Engine (CQE) *
+ * *
+\*****************************************************************************/
+
+static u32 sdhci_msm_bayhub_cqe_irq(struct sdhci_host *host, u32 intmask)
+{
+ int cmd_error = 0;
+ int data_error = 0;
+
+ if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error))
+ return intmask;
+
+ cqhci_irq(host->mmc, intmask, cmd_error, data_error);
+ return 0;
+}
+
+static void sdhci_msm_bayhub_cqe_disable(struct mmc_host *mmc, bool recovery)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ u32 ctrl;
+
+ /*
+ * When CQE is halted, the legacy SDHCI path operates only
+ * on 16-byte descriptors in 64bit mode.
+ */
+ if (host->flags & SDHCI_USE_64_BIT_DMA)
+ host->desc_sz = 16;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ /*
+ * During CQE command transfers, command complete bit gets latched.
+ * So s/w should clear command complete interrupt status when CQE is
+ * either halted or disabled. Otherwise unexpected SDCHI legacy
+ * interrupt gets triggered when CQE is halted/disabled.
+ */
+ ctrl = sdhci_readl(host, SDHCI_INT_ENABLE);
+ ctrl |= SDHCI_INT_RESPONSE;
+ sdhci_writel(host, ctrl, SDHCI_INT_ENABLE);
+ sdhci_writel(host, SDHCI_INT_RESPONSE, SDHCI_INT_STATUS);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ sdhci_cqe_disable(mmc, recovery);
+}
+
+static const struct cqhci_host_ops sdhci_msm_bayhub_cqhci_ops = {
+ .enable = sdhci_cqe_enable,
+ .disable = sdhci_msm_bayhub_cqe_disable,
+};
+
+static int sdhci_msm_bayhub_cqe_add_host(struct sdhci_host *host,
+ struct platform_device *pdev)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ struct cqhci_host *cq_host;
+ bool dma64;
+ u32 cqcfg;
+ int ret;
+
+ /*
+ * When CQE is halted, SDHC operates only on 16byte ADMA descriptors.
+ * So ensure ADMA table is allocated for 16byte descriptors.
+ */
+ if (host->caps & SDHCI_CAN_64BIT)
+ host->alloc_desc_sz = 16;
+
+ ret = sdhci_setup_host(host);
+ if (ret)
+ return ret;
+
+ cq_host = cqhci_pltfm_init(pdev);
+ if (IS_ERR(cq_host)) {
+ ret = PTR_ERR(cq_host);
+ dev_err(&pdev->dev, "cqhci-pltfm init: failed: %d\n", ret);
+ goto cleanup;
+ }
+
+ msm_bayhub_host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
+ cq_host->ops = &sdhci_msm_bayhub_cqhci_ops;
+
+ dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
+
+ ret = cqhci_init(cq_host, host->mmc, dma64);
+ if (ret) {
+ dev_err(&pdev->dev, "%s: CQE init: failed (%d)\n",
+ mmc_hostname(host->mmc), ret);
+ goto cleanup;
+ }
+
+ /* Disable cqe reset due to cqe enable signal */
+ cqcfg = cqhci_readl(cq_host, CQHCI_VENDOR_CFG1);
+ cqcfg |= CQHCI_VENDOR_DIS_RST_ON_CQ_EN;
+ cqhci_writel(cq_host, cqcfg, CQHCI_VENDOR_CFG1);
+
+ /*
+ * SDHC expects 12byte ADMA descriptors till CQE is enabled.
+ * So limit desc_sz to 12 so that the data commands that are sent
+ * during card initialization (before CQE gets enabled) would
+ * get executed without any issues.
+ */
+ if (host->flags & SDHCI_USE_64_BIT_DMA)
+ host->desc_sz = 12;
+
+ ret = __sdhci_add_host(host);
+ if (ret)
+ goto cleanup;
+
+ dev_info(&pdev->dev, "%s: CQE init: success\n",
+ mmc_hostname(host->mmc));
+ return ret;
+
+cleanup:
+ sdhci_cleanup_host(host);
+ return ret;
+}
+
+/*
+ * Platform specific register write functions. This is so that, if any
+ * register write needs to be followed up by platform specific actions,
+ * they can be added here. These functions can go to sleep when writes
+ * to certain registers are done.
+ * These functions are relying on sdhci_set_ios not using spinlock.
+ */
+static int __sdhci_msm_bayhub_check_write(struct sdhci_host *host, u16 val, int reg)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ u32 req_type = 0;
+
+ switch (reg) {
+ case SDHCI_HOST_CONTROL2:
+ req_type = (val & SDHCI_CTRL_VDD_180) ? REQ_IO_LOW :
+ REQ_IO_HIGH;
+ break;
+ case SDHCI_SOFTWARE_RESET:
+ if (host->pwr && (val & SDHCI_RESET_ALL))
+ req_type = REQ_BUS_OFF;
+ break;
+ case SDHCI_POWER_CONTROL:
+ req_type = !val ? REQ_BUS_OFF : REQ_BUS_ON;
+ break;
+ case SDHCI_TRANSFER_MODE:
+ msm_bayhub_host->transfer_mode = val;
+ break;
+ case SDHCI_COMMAND:
+ if (!msm_bayhub_host->use_cdr)
+ break;
+ if ((msm_bayhub_host->transfer_mode & SDHCI_TRNS_READ) &&
+ SDHCI_GET_CMD(val) != MMC_SEND_TUNING_BLOCK_HS200 &&
+ SDHCI_GET_CMD(val) != MMC_SEND_TUNING_BLOCK)
+ sdhci_msm_bayhub_set_cdr(host, true);
+ else
+ sdhci_msm_bayhub_set_cdr(host, false);
+ break;
+ }
+
+ if (req_type) {
+ msm_bayhub_host->pwr_irq_flag = 0;
+ /*
+ * Since this register write may trigger a power irq, ensure
+ * all previous register writes are complete by this point.
+ */
+ mb();
+ }
+ return req_type;
+}
+
+/* This function may sleep*/
+static void sdhci_msm_bayhub_writew(struct sdhci_host *host, u16 val, int reg)
+{
+ u32 req_type = 0;
+
+ req_type = __sdhci_msm_bayhub_check_write(host, val, reg);
+ writew_relaxed(val, host->ioaddr + reg);
+
+ if (req_type)
+ sdhci_msm_bayhub_check_power_status(host, req_type);
+}
+
+/* This function may sleep*/
+static void sdhci_msm_bayhub_writeb(struct sdhci_host *host, u8 val, int reg)
+{
+ u32 req_type = 0;
+
+ req_type = __sdhci_msm_bayhub_check_write(host, val, reg);
+
+ writeb_relaxed(val, host->ioaddr + reg);
+
+ if (req_type)
+ sdhci_msm_bayhub_check_power_status(host, req_type);
+}
+
+static void sdhci_msm_bayhub_set_regulator_caps(struct sdhci_msm_bayhub_host *msm_bayhub_host)
+{
+ struct mmc_host *mmc = msm_bayhub_host->mmc;
+ struct regulator *supply = mmc->supply.vqmmc;
+ u32 caps = 0, config;
+ struct sdhci_host *host = mmc_priv(mmc);
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset = msm_bayhub_host->offset;
+
+ if (!IS_ERR(mmc->supply.vqmmc)) {
+ if (regulator_is_supported_voltage(supply, 1700000, 1950000))
+ caps |= CORE_1_8V_SUPPORT;
+ if (regulator_is_supported_voltage(supply, 2700000, 3600000))
+ caps |= CORE_3_0V_SUPPORT;
+
+ if (!caps)
+ pr_warn("%s: 1.8/3V not supported for vqmmc\n",
+ mmc_hostname(mmc));
+ }
+
+ if (caps) {
+ /*
+ * Set the PAD_PWR_SWITCH_EN bit so that the PAD_PWR_SWITCH
+ * bit can be used as required later on.
+ */
+ u32 io_level = msm_bayhub_host->curr_io_level;
+
+ config = readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec);
+ config |= CORE_IO_PAD_PWR_SWITCH_EN;
+
+ if ((io_level & REQ_IO_HIGH) && (caps & CORE_3_0V_SUPPORT))
+ config &= ~CORE_IO_PAD_PWR_SWITCH;
+ else if ((io_level & REQ_IO_LOW) || (caps & CORE_1_8V_SUPPORT))
+ config |= CORE_IO_PAD_PWR_SWITCH;
+
+ writel_relaxed(config,
+ host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+ }
+ msm_bayhub_host->caps_0 |= caps;
+ pr_debug("%s: supported caps: 0x%08x\n", mmc_hostname(mmc), caps);
+}
+
+static void sdhci_msm_bayhub_reset(struct sdhci_host *host, u8 mask)
+{
+ if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL))
+ cqhci_deactivate(host->mmc);
+ sdhci_reset(host, mask);
+}
+
+static int sdhci_msm_bayhub_register_vreg(struct sdhci_msm_bayhub_host *msm_bayhub_host)
+{
+ int ret;
+
+ ret = mmc_regulator_get_supply(msm_bayhub_host->mmc);
+ if (ret)
+ return ret;
+
+ sdhci_msm_bayhub_set_regulator_caps(msm_bayhub_host);
+
+ return 0;
+}
+
+static int sdhci_msm_bayhub_start_signal_voltage_switch(struct mmc_host *mmc,
+ struct mmc_ios *ios)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u16 ctrl, status;
+
+ /*
+ * Signal Voltage Switching is only applicable for Host Controllers
+ * v3.00 and above.
+ */
+ if (host->version < SDHCI_SPEC_300)
+ return 0;
+
+ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+
+ switch (ios->signal_voltage) {
+ case MMC_SIGNAL_VOLTAGE_330:
+ if (!(host->flags & SDHCI_SIGNALING_330))
+ return -EINVAL;
+
+ /* Set 1.8V Signal Enable in the Host Control2 register to 0 */
+ ctrl &= ~SDHCI_CTRL_VDD_180;
+ break;
+ case MMC_SIGNAL_VOLTAGE_180:
+ if (!(host->flags & SDHCI_SIGNALING_180))
+ return -EINVAL;
+
+ /* Enable 1.8V Signal Enable in the Host Control2 register */
+ ctrl |= SDHCI_CTRL_VDD_180;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+
+ /* Wait for 5ms */
+ usleep_range(5000, 5500);
+
+ /* regulator output should be stable within 5 ms */
+ status = ctrl & SDHCI_CTRL_VDD_180;
+ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ if ((ctrl & SDHCI_CTRL_VDD_180) == status)
+ return 0;
+
+ dev_warn(mmc_dev(mmc), "%s: Regulator output did not became stable\n",
+ mmc_hostname(mmc));
+
+ return -EAGAIN;
+}
+
+#define DRIVER_NAME "sdhci_msm_bayhub"
+#define SDHCI_MSM_DUMP(f, x...) \
+ pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
+
+static void sdhci_msm_bayhub_dump_vendor_regs(struct sdhci_host *host)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset = msm_bayhub_host->offset;
+
+ SDHCI_MSM_DUMP("----------- VENDOR REGISTER DUMP -----------\n");
+
+ SDHCI_MSM_DUMP(
+ "DLL sts: 0x%08x | DLL cfg: 0x%08x | DLL cfg2: 0x%08x\n",
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_status),
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config),
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config_2));
+ SDHCI_MSM_DUMP(
+ "DLL cfg3: 0x%08x | DLL usr ctl: 0x%08x | DDR cfg: 0x%08x\n",
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_config_3),
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_dll_usr_ctl),
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_ddr_config));
+ SDHCI_MSM_DUMP(
+ "Vndr func: 0x%08x | Vndr func2 : 0x%08x Vndr func3: 0x%08x\n",
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec),
+ readl_relaxed(host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec_func2),
+ readl_relaxed(host->ioaddr + msm_bayhub_offset->core_vendor_spec3));
+}
+
+static const struct sdhci_msm_bayhub_variant_ops mci_var_ops = {
+ .msm_bayhub_readl_relaxed = sdhci_msm_bayhub_mci_variant_readl_relaxed,
+ .msm_bayhub_writel_relaxed = sdhci_msm_bayhub_mci_variant_writel_relaxed,
+};
+
+static const struct sdhci_msm_bayhub_variant_ops v5_var_ops = {
+ .msm_bayhub_readl_relaxed = sdhci_msm_bayhub_v5_variant_readl_relaxed,
+ .msm_bayhub_writel_relaxed = sdhci_msm_bayhub_v5_variant_writel_relaxed,
+};
+
+static const struct sdhci_msm_bayhub_variant_info sdhci_msm_bayhub_v5_var = {
+ .mci_removed = true,
+ .var_ops = &v5_var_ops,
+ .offset = &sdhci_msm_bayhub_v5_offset,
+};
+
+static const struct sdhci_msm_bayhub_variant_info sdm845_sdhci_var = {
+ .mci_removed = true,
+ .restore_dll_config = true,
+ .var_ops = &v5_var_ops,
+ .offset = &sdhci_msm_bayhub_v5_offset,
+};
+
+static const struct of_device_id sdhci_msm_bayhub_dt_match[] = {
+ {.compatible = "qcom,sdhci-msm-bayhub-v5", .data = &sdhci_msm_bayhub_v5_var},
+ {.compatible = "qcom,sdm845-bayhub-sdhci", .data = &sdm845_sdhci_var},
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, sdhci_msm_bayhub_dt_match);
+
+static const struct sdhci_ops sdhci_msm_bayhub_ops = {
+ .reset = sdhci_msm_bayhub_reset,
+ .set_clock = sdhci_msm_bayhub_set_clock,
+ .get_min_clock = sdhci_msm_bayhub_get_min_clock,
+ .get_max_clock = sdhci_msm_bayhub_get_max_clock,
+ .set_bus_width = sdhci_set_bus_width,
+ .set_uhs_signaling = sdhci_msm_bayhub_set_uhs_signaling,
+ .write_w = sdhci_msm_bayhub_writew,
+ .write_b = sdhci_msm_bayhub_writeb,
+ .irq = sdhci_msm_bayhub_cqe_irq,
+ .dump_vendor_regs = sdhci_msm_bayhub_dump_vendor_regs,
+ .set_power = sdhci_set_power_noreg,
+};
+
+static const struct sdhci_pltfm_data sdhci_msm_bayhub_pdata = {
+ .quirks = SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+ SDHCI_QUIRK_SINGLE_POWER_WRITE |
+ SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
+ SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
+
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+ .ops = &sdhci_msm_bayhub_ops,
+};
+
+static inline void sdhci_msm_bayhub_get_of_property(struct platform_device *pdev,
+ struct sdhci_host *host)
+{
+ struct device_node *node = pdev->dev.of_node;
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ if (of_property_read_u32(node, "qcom,ddr-config",
+ &msm_bayhub_host->ddr_config))
+ msm_bayhub_host->ddr_config = DDR_CONFIG_POR_VAL;
+
+ of_property_read_u32(node, "qcom,dll-config", &msm_bayhub_host->dll_config);
+}
+
+static int sdhci_msm_bayhub_probe(struct platform_device *pdev)
+{
+ struct sdhci_host *host;
+ struct sdhci_pltfm_host *pltfm_host;
+ struct sdhci_msm_bayhub_host *msm_bayhub_host;
+ struct resource *core_memres;
+ struct clk *clk;
+ int ret;
+ u16 host_version, core_minor;
+ u32 core_version, config;
+ u8 core_major;
+ const struct sdhci_msm_bayhub_offset *msm_bayhub_offset;
+ const struct sdhci_msm_bayhub_variant_info *var_info;
+ struct device_node *node = pdev->dev.of_node;
+
+ host = sdhci_pltfm_init(pdev, &sdhci_msm_bayhub_pdata, sizeof(*msm_bayhub_host));
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ host->sdma_boundary = 0;
+ pltfm_host = sdhci_priv(host);
+ msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ msm_bayhub_host->mmc = host->mmc;
+ msm_bayhub_host->pdev = pdev;
+
+ ret = mmc_of_parse(host->mmc);
+ if (ret)
+ goto pltfm_free;
+
+ if (of_find_property(node, "use-bayhub-bh201", NULL)) {
+ sdhci_bh201_parse(msm_bayhub_host->mmc);
+ INIT_DELAYED_WORK(&host->mmc->detect, mmc_rescan_bayhub);
+ } else
+ msm_bayhub_host->ggc.bh201_used = 0;
+
+ /*
+ * Based on the compatible string, load the required msm_bayhub host info from
+ * the data associated with the version info.
+ */
+ var_info = of_device_get_match_data(&pdev->dev);
+
+ msm_bayhub_host->mci_removed = var_info->mci_removed;
+ msm_bayhub_host->restore_dll_config = var_info->restore_dll_config;
+ msm_bayhub_host->var_ops = var_info->var_ops;
+ msm_bayhub_host->offset = var_info->offset;
+ msm_bayhub_host->uses_tassadar_dll = var_info->uses_tassadar_dll;
+
+ msm_bayhub_offset = msm_bayhub_host->offset;
+
+ sdhci_get_of_property(pdev);
+ sdhci_msm_bayhub_get_of_property(pdev, host);
+
+ msm_bayhub_host->saved_tuning_phase = INVALID_TUNING_PHASE;
+
+ /* Setup SDCC bus voter clock. */
+ msm_bayhub_host->bus_clk = devm_clk_get(&pdev->dev, "bus");
+ if (!IS_ERR(msm_bayhub_host->bus_clk)) {
+ /* Vote for max. clk rate for max. performance */
+ ret = clk_set_rate(msm_bayhub_host->bus_clk, INT_MAX);
+ if (ret)
+ goto pltfm_free;
+ ret = clk_prepare_enable(msm_bayhub_host->bus_clk);
+ if (ret)
+ goto pltfm_free;
+ }
+
+ /* Setup main peripheral bus clock */
+ clk = devm_clk_get(&pdev->dev, "iface");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ dev_err(&pdev->dev, "Peripheral clk setup failed (%d)\n", ret);
+ goto bus_clk_disable;
+ }
+ msm_bayhub_host->bulk_clks[1].clk = clk;
+
+ /* Setup SDC MMC clock */
+ clk = devm_clk_get(&pdev->dev, "core");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ dev_err(&pdev->dev, "SDC MMC clk setup failed (%d)\n", ret);
+ goto bus_clk_disable;
+ }
+ msm_bayhub_host->bulk_clks[0].clk = clk;
+
+ /* Check for optional interconnect paths */
+ ret = dev_pm_opp_of_find_icc_paths(&pdev->dev, NULL);
+ if (ret)
+ goto bus_clk_disable;
+
+ msm_bayhub_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "core");
+ if (IS_ERR(msm_bayhub_host->opp_table)) {
+ ret = PTR_ERR(msm_bayhub_host->opp_table);
+ goto bus_clk_disable;
+ }
+
+ /* OPP table is optional */
+ ret = dev_pm_opp_of_add_table(&pdev->dev);
+ if (!ret) {
+ msm_bayhub_host->has_opp_table = true;
+ } else if (ret != -ENODEV) {
+ dev_err(&pdev->dev, "Invalid OPP table in Device tree\n");
+ goto opp_cleanup;
+ }
+
+ /* Vote for maximum clock rate for maximum performance */
+ ret = dev_pm_opp_set_rate(&pdev->dev, INT_MAX);
+ if (ret)
+ dev_warn(&pdev->dev, "core clock boost failed\n");
+
+ clk = devm_clk_get(&pdev->dev, "cal");
+ if (IS_ERR(clk))
+ clk = NULL;
+ msm_bayhub_host->bulk_clks[2].clk = clk;
+
+ clk = devm_clk_get(&pdev->dev, "sleep");
+ if (IS_ERR(clk))
+ clk = NULL;
+ msm_bayhub_host->bulk_clks[3].clk = clk;
+
+ ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_bayhub_host->bulk_clks),
+ msm_bayhub_host->bulk_clks);
+ if (ret)
+ goto opp_cleanup;
+
+ /*
+ * xo clock is needed for FLL feature of cm_dll.
+ * In case if xo clock is not mentioned in DT, warn and proceed.
+ */
+ msm_bayhub_host->xo_clk = devm_clk_get(&pdev->dev, "xo");
+ if (IS_ERR(msm_bayhub_host->xo_clk)) {
+ ret = PTR_ERR(msm_bayhub_host->xo_clk);
+ dev_warn(&pdev->dev, "TCXO clk not present (%d)\n", ret);
+ }
+
+ if (!msm_bayhub_host->mci_removed) {
+ core_memres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ msm_bayhub_host->core_mem = devm_ioremap_resource(&pdev->dev,
+ core_memres);
+
+ if (IS_ERR(msm_bayhub_host->core_mem)) {
+ ret = PTR_ERR(msm_bayhub_host->core_mem);
+ goto clk_disable;
+ }
+ }
+
+ /* Reset the vendor spec register to power on reset state */
+ writel_relaxed(CORE_VENDOR_SPEC_POR_VAL,
+ host->ioaddr + msm_bayhub_offset->core_vendor_spec);
+
+ if (!msm_bayhub_host->mci_removed) {
+ /* Set HC_MODE_EN bit in HC_MODE register */
+ msm_bayhub_host_writel(msm_bayhub_host, HC_MODE_EN, host,
+ msm_bayhub_offset->core_hc_mode);
+ config = msm_bayhub_host_readl(msm_bayhub_host, host,
+ msm_bayhub_offset->core_hc_mode);
+ config |= FF_CLK_SW_RST_DIS;
+ msm_bayhub_host_writel(msm_bayhub_host, config, host,
+ msm_bayhub_offset->core_hc_mode);
+ }
+
+ host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
+ dev_dbg(&pdev->dev, "Host Version: 0x%x Vendor Version 0x%x\n",
+ host_version, ((host_version & SDHCI_VENDOR_VER_MASK) >>
+ SDHCI_VENDOR_VER_SHIFT));
+
+ core_version = msm_bayhub_host_readl(msm_bayhub_host, host,
+ msm_bayhub_offset->core_mci_version);
+ core_major = (core_version & CORE_VERSION_MAJOR_MASK) >>
+ CORE_VERSION_MAJOR_SHIFT;
+ core_minor = core_version & CORE_VERSION_MINOR_MASK;
+ dev_dbg(&pdev->dev, "MCI Version: 0x%08x, major: 0x%04x, minor: 0x%02x\n",
+ core_version, core_major, core_minor);
+
+ if (core_major == 1 && core_minor >= 0x42)
+ msm_bayhub_host->use_14lpp_dll_reset = true;
+
+ /*
+ * SDCC 5 controller with major version 1, minor version 0x34 and later
+ * with HS 400 mode support will use CM DLL instead of CDC LP 533 DLL.
+ */
+ if (core_major == 1 && core_minor < 0x34)
+ msm_bayhub_host->use_cdclp533 = true;
+
+ /*
+ * Support for some capabilities is not advertised by newer
+ * controller versions and must be explicitly enabled.
+ */
+ if (core_major >= 1 && core_minor != 0x11 && core_minor != 0x12) {
+ config = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES);
+ config |= SDHCI_CAN_VDD_300 | SDHCI_CAN_DO_8BIT;
+ writel_relaxed(config, host->ioaddr +
+ msm_bayhub_offset->core_vendor_spec_capabilities0);
+ }
+
+ if (core_major == 1 && core_minor >= 0x49)
+ msm_bayhub_host->updated_ddr_cfg = true;
+
+ ret = sdhci_msm_bayhub_register_vreg(msm_bayhub_host);
+ if (ret)
+ goto clk_disable;
+
+ /*
+ * Power on reset state may trigger power irq if previous status of
+ * PWRCTL was either BUS_ON or IO_HIGH_V. So before enabling pwr irq
+ * interrupt in GIC, any pending power irq interrupt should be
+ * acknowledged. Otherwise power irq interrupt handler would be
+ * fired prematurely.
+ */
+ sdhci_msm_bayhub_handle_pwr_irq(host, 0);
+
+ /*
+ * Ensure that above writes are propogated before interrupt enablement
+ * in GIC.
+ */
+ mb();
+
+ /* Setup IRQ for handling power/voltage tasks with PMIC */
+ msm_bayhub_host->pwr_irq = platform_get_irq_byname(pdev, "pwr_irq");
+ if (msm_bayhub_host->pwr_irq < 0) {
+ ret = msm_bayhub_host->pwr_irq;
+ goto clk_disable;
+ }
+
+ sdhci_msm_bayhub_init_pwr_irq_wait(msm_bayhub_host);
+ /* Enable pwr irq interrupts */
+ msm_bayhub_host_writel(msm_bayhub_host, INT_MASK, host,
+ msm_bayhub_offset->core_pwrctl_mask);
+
+ ret = devm_request_threaded_irq(&pdev->dev, msm_bayhub_host->pwr_irq, NULL,
+ sdhci_msm_bayhub_pwr_irq, IRQF_ONESHOT,
+ dev_name(&pdev->dev), host);
+ if (ret) {
+ dev_err(&pdev->dev, "Request IRQ failed (%d)\n", ret);
+ goto clk_disable;
+ }
+
+ msm_bayhub_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
+
+ pm_runtime_get_noresume(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev,
+ MSM_MMC_AUTOSUSPEND_DELAY_MS);
+ pm_runtime_use_autosuspend(&pdev->dev);
+
+ host->mmc_host_ops.start_signal_voltage_switch =
+ sdhci_msm_bayhub_start_signal_voltage_switch;
+ if (msm_bayhub_host->ggc.bh201_used)
+ host->mmc_host_ops.execute_tuning = sdhci_bht_execute_tuning;
+ else
+ host->mmc_host_ops.execute_tuning = sdhci_msm_bayhub_execute_tuning;
+
+ if (of_property_read_bool(node, "supports-cqe"))
+ ret = sdhci_msm_bayhub_cqe_add_host(host, pdev);
+ else
+ ret = sdhci_add_host(host);
+ if (ret)
+ goto pm_runtime_disable;
+
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_put_autosuspend(&pdev->dev);
+
+ return 0;
+
+pm_runtime_disable:
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+clk_disable:
+ clk_bulk_disable_unprepare(ARRAY_SIZE(msm_bayhub_host->bulk_clks),
+ msm_bayhub_host->bulk_clks);
+opp_cleanup:
+ if (msm_bayhub_host->has_opp_table)
+ dev_pm_opp_of_remove_table(&pdev->dev);
+ dev_pm_opp_put_clkname(msm_bayhub_host->opp_table);
+bus_clk_disable:
+ if (!IS_ERR(msm_bayhub_host->bus_clk))
+ clk_disable_unprepare(msm_bayhub_host->bus_clk);
+pltfm_free:
+ if (msm_bayhub_host->ggc.bh201_used) {
+ if (gpio_is_valid(msm_bayhub_host->ggc.det_gpio))
+ devm_gpio_free(&pdev->dev, msm_bayhub_host->ggc.det_gpio);
+ if (gpio_is_valid(msm_bayhub_host->ggc.pwr_gpio))
+ devm_gpio_free(&pdev->dev, msm_bayhub_host->ggc.pwr_gpio);
+ }
+
+ sdhci_pltfm_free(pdev);
+ return ret;
+}
+
+static int sdhci_msm_bayhub_remove(struct platform_device *pdev)
+{
+ struct sdhci_host *host = platform_get_drvdata(pdev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ int dead = (readl_relaxed(host->ioaddr + SDHCI_INT_STATUS) ==
+ 0xffffffff);
+
+ sdhci_remove_host(host, dead);
+ if (msm_bayhub_host->ggc.bh201_used) {
+ if (gpio_is_valid(msm_bayhub_host->ggc.det_gpio))
+ devm_gpio_free(&pdev->dev, msm_bayhub_host->ggc.det_gpio);
+ if (gpio_is_valid(msm_bayhub_host->ggc.pwr_gpio))
+ devm_gpio_free(&pdev->dev, msm_bayhub_host->ggc.pwr_gpio);
+ }
+ if (msm_bayhub_host->has_opp_table)
+ dev_pm_opp_of_remove_table(&pdev->dev);
+ dev_pm_opp_put_clkname(msm_bayhub_host->opp_table);
+ pm_runtime_get_sync(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+
+ clk_bulk_disable_unprepare(ARRAY_SIZE(msm_bayhub_host->bulk_clks),
+ msm_bayhub_host->bulk_clks);
+ if (!IS_ERR(msm_bayhub_host->bus_clk))
+ clk_disable_unprepare(msm_bayhub_host->bus_clk);
+ sdhci_pltfm_free(pdev);
+ return 0;
+}
+
+static __maybe_unused int sdhci_msm_bayhub_runtime_suspend(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+
+ /* Drop the performance vote */
+ dev_pm_opp_set_rate(dev, 0);
+ clk_bulk_disable_unprepare(ARRAY_SIZE(msm_bayhub_host->bulk_clks),
+ msm_bayhub_host->bulk_clks);
+
+ return 0;
+}
+
+static __maybe_unused int sdhci_msm_bayhub_runtime_resume(struct device *dev)
+{
+ struct sdhci_host *host = dev_get_drvdata(dev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_msm_bayhub_host *msm_bayhub_host = sdhci_pltfm_priv(pltfm_host);
+ int ret;
+
+ ret = clk_bulk_prepare_enable(ARRAY_SIZE(msm_bayhub_host->bulk_clks),
+ msm_bayhub_host->bulk_clks);
+ if (ret)
+ return ret;
+ /*
+ * Whenever core-clock is gated dynamically, it's needed to
+ * restore the SDR DLL settings when the clock is ungated.
+ */
+ if (msm_bayhub_host->restore_dll_config && msm_bayhub_host->clk_rate)
+ ret = sdhci_msm_bayhub_restore_sdr_dll_config(host);
+
+ dev_pm_opp_set_rate(dev, msm_bayhub_host->clk_rate);
+
+ return ret;
+}
+
+static const struct dev_pm_ops sdhci_msm_bayhub_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+ SET_RUNTIME_PM_OPS(sdhci_msm_bayhub_runtime_suspend,
+ sdhci_msm_bayhub_runtime_resume,
+ NULL)
+};
+
+static struct platform_driver sdhci_msm_bayhub_driver = {
+ .probe = sdhci_msm_bayhub_probe,
+ .remove = sdhci_msm_bayhub_remove,
+ .driver = {
+ .name = "sdhci_msm_bayhub",
+ .of_match_table = sdhci_msm_bayhub_dt_match,
+ .pm = &sdhci_msm_bayhub_pm_ops,
+ .probe_type = PROBE_PREFER_ASYNCHRONOUS,
+ },
+};
+
+module_platform_driver(sdhci_msm_bayhub_driver);
+
+MODULE_DESCRIPTION("Qualcomm-bayhub Secure Digital Host Controller Interface driver");
+MODULE_LICENSE("GPL v2");
--
2.25.1
next reply other threads:[~2021-07-28 17:44 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 17:43 chevron [this message]
2021-08-20 18:20 ` [PATCH V1 1/1]mmc:sdhci-bayhub:fix Qualcomm sd host 845 SD card compatibility issue Bjorn Andersson
2021-08-30 12:14 ` 回复: " Chevron Li (WH)
2021-11-04 6:51 ` Chevron Li (WH)
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