mirror of https://gitee.com/openkylin/linux.git
mmc: host: Register changes for sdcc V5
Add support to use the new compatible string "qcom,sdhci-msm-v5". Based on the msm variant, pick the relevant variant data and use it for register read/write to msm specific registers. Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org> Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org> Reviewed-by: Evan Green <evgreen@chromium.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Sayali Lokhande
Ulf Hansson
parent
e0e4eee21c
commit
bc99266bbd
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@ -33,16 +33,11 @@
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#define CORE_MCI_GENERICS 0x70
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#define SWITCHABLE_SIGNALING_VOLTAGE BIT(29)
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#define CORE_HC_MODE 0x78
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#define HC_MODE_EN 0x1
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#define CORE_POWER 0x0
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#define CORE_SW_RST BIT(7)
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#define FF_CLK_SW_RST_DIS BIT(13)
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#define CORE_PWRCTL_STATUS 0xdc
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#define CORE_PWRCTL_MASK 0xe0
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#define CORE_PWRCTL_CLEAR 0xe4
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#define CORE_PWRCTL_CTL 0xe8
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#define CORE_PWRCTL_BUS_OFF BIT(0)
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#define CORE_PWRCTL_BUS_ON BIT(1)
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#define CORE_PWRCTL_IO_LOW BIT(2)
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@ -63,17 +58,13 @@
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#define CORE_CDR_EXT_EN BIT(19)
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#define CORE_DLL_PDN BIT(29)
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#define CORE_DLL_RST BIT(30)
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#define CORE_DLL_CONFIG 0x100
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#define CORE_CMD_DAT_TRACK_SEL BIT(0)
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#define CORE_DLL_STATUS 0x108
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#define CORE_DLL_CONFIG_2 0x1b4
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#define CORE_DDR_CAL_EN BIT(0)
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#define CORE_FLL_CYCLE_CNT BIT(18)
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#define CORE_DLL_CLOCK_DISABLE BIT(21)
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#define CORE_VENDOR_SPEC 0x10c
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#define CORE_VENDOR_SPEC_POR_VAL 0xa1c
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#define CORE_VENDOR_SPEC_POR_VAL 0xa1c
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#define CORE_CLK_PWRSAVE BIT(1)
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#define CORE_HC_MCLK_SEL_DFLT (2 << 8)
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#define CORE_HC_MCLK_SEL_HS400 (3 << 8)
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@ -111,17 +102,14 @@
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#define CORE_CDC_SWITCH_BYPASS_OFF BIT(0)
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#define CORE_CDC_SWITCH_RC_EN BIT(1)
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#define CORE_DDR_200_CFG 0x184
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#define CORE_CDC_T4_DLY_SEL BIT(0)
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#define CORE_CMDIN_RCLK_EN BIT(1)
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#define CORE_START_CDC_TRAFFIC BIT(6)
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#define CORE_VENDOR_SPEC3 0x1b0
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#define CORE_PWRSAVE_DLL BIT(3)
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#define CORE_DDR_CONFIG 0x1b8
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#define DDR_CONFIG_POR_VAL 0x80040853
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#define CORE_VENDOR_SPEC_CAPABILITIES0 0x11c
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#define INVALID_TUNING_PHASE -1
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#define SDHCI_MSM_MIN_CLOCK 400000
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@ -137,6 +125,12 @@
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/* Timeout value to avoid infinite waiting for pwr_irq */
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#define MSM_PWR_IRQ_TIMEOUT_MS 5000
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#define msm_host_readl(msm_host, host, offset) \
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msm_host->var_ops->msm_readl_relaxed(host, offset)
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#define msm_host_writel(msm_host, val, host, offset) \
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msm_host->var_ops->msm_writel_relaxed(val, host, offset)
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struct sdhci_msm_offset {
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u32 core_hc_mode;
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u32 core_mci_data_cnt;
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@ -266,6 +260,14 @@ struct sdhci_msm_host {
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const struct sdhci_msm_offset *offset;
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};
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static const struct sdhci_msm_offset *sdhci_priv_msm_offset(struct sdhci_host *host)
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{
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
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return msm_host->offset;
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}
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/*
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* APIs to read/write to vendor specific registers which were there in the
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* core_mem region before MCI was removed.
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@ -347,10 +349,12 @@ static inline int msm_dll_poll_ck_out_en(struct sdhci_host *host, u8 poll)
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u32 wait_cnt = 50;
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u8 ck_out_en;
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struct mmc_host *mmc = host->mmc;
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const struct sdhci_msm_offset *msm_offset =
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sdhci_priv_msm_offset(host);
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/* Poll for CK_OUT_EN bit. max. poll time = 50us */
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ck_out_en = !!(readl_relaxed(host->ioaddr + CORE_DLL_CONFIG) &
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CORE_CK_OUT_EN);
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ck_out_en = !!(readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config) & CORE_CK_OUT_EN);
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while (ck_out_en != poll) {
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if (--wait_cnt == 0) {
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@ -360,8 +364,8 @@ static inline int msm_dll_poll_ck_out_en(struct sdhci_host *host, u8 poll)
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}
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udelay(1);
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ck_out_en = !!(readl_relaxed(host->ioaddr + CORE_DLL_CONFIG) &
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CORE_CK_OUT_EN);
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ck_out_en = !!(readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config) & CORE_CK_OUT_EN);
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}
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return 0;
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@ -377,16 +381,18 @@ static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase)
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unsigned long flags;
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u32 config;
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struct mmc_host *mmc = host->mmc;
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const struct sdhci_msm_offset *msm_offset =
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sdhci_priv_msm_offset(host);
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if (phase > 0xf)
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return -EINVAL;
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spin_lock_irqsave(&host->lock, flags);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
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config &= ~(CORE_CDR_EN | CORE_CK_OUT_EN);
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config |= (CORE_CDR_EXT_EN | CORE_DLL_EN);
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
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/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '0' */
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rc = msm_dll_poll_ck_out_en(host, 0);
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@ -397,24 +403,24 @@ static int msm_config_cm_dll_phase(struct sdhci_host *host, u8 phase)
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* Write the selected DLL clock output phase (0 ... 15)
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* to CDR_SELEXT bit field of DLL_CONFIG register.
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*/
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
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config &= ~CDR_SELEXT_MASK;
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config |= grey_coded_phase_table[phase] << CDR_SELEXT_SHIFT;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
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config |= CORE_CK_OUT_EN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
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/* Wait until CK_OUT_EN bit of DLL_CONFIG register becomes '1' */
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rc = msm_dll_poll_ck_out_en(host, 1);
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if (rc)
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goto err_out;
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
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config |= CORE_CDR_EN;
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config &= ~CORE_CDR_EXT_EN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
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goto out;
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err_out:
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@ -540,6 +546,8 @@ static int msm_find_most_appropriate_phase(struct sdhci_host *host,
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static inline void msm_cm_dll_set_freq(struct sdhci_host *host)
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{
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u32 mclk_freq = 0, config;
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const struct sdhci_msm_offset *msm_offset =
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sdhci_priv_msm_offset(host);
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/* Program the MCLK value to MCLK_FREQ bit field */
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if (host->clock <= 112000000)
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@ -559,10 +567,10 @@ static inline void msm_cm_dll_set_freq(struct sdhci_host *host)
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else if (host->clock <= 200000000)
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mclk_freq = 7;
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
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config &= ~CMUX_SHIFT_PHASE_MASK;
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config |= mclk_freq << CMUX_SHIFT_PHASE_SHIFT;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
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}
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/* Initialize the DLL (Programmable Delay Line) */
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@ -574,6 +582,8 @@ static int msm_init_cm_dll(struct sdhci_host *host)
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int wait_cnt = 50;
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unsigned long flags;
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u32 config;
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const struct sdhci_msm_offset *msm_offset =
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msm_host->offset;
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spin_lock_irqsave(&host->lock, flags);
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@ -582,34 +592,43 @@ static int msm_init_cm_dll(struct sdhci_host *host)
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* tuning is in progress. Keeping PWRSAVE ON may
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* turn off the clock.
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*/
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config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
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config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
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config &= ~CORE_CLK_PWRSAVE;
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writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
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writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
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if (msm_host->use_14lpp_dll_reset) {
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config &= ~CORE_CK_OUT_EN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG_2);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config_2);
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config |= CORE_DLL_CLOCK_DISABLE;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG_2);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config_2);
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}
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config |= CORE_DLL_RST;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config |= CORE_DLL_PDN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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msm_cm_dll_set_freq(host);
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if (msm_host->use_14lpp_dll_reset &&
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!IS_ERR_OR_NULL(msm_host->xo_clk)) {
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u32 mclk_freq = 0;
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG_2);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config_2);
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config &= CORE_FLL_CYCLE_CNT;
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if (config)
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mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 8),
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@ -618,40 +637,52 @@ static int msm_init_cm_dll(struct sdhci_host *host)
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mclk_freq = DIV_ROUND_CLOSEST_ULL((host->clock * 4),
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clk_get_rate(msm_host->xo_clk));
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG_2);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config_2);
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config &= ~(0xFF << 10);
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config |= mclk_freq << 10;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG_2);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config_2);
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/* wait for 5us before enabling DLL clock */
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udelay(5);
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}
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config &= ~CORE_DLL_RST;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config &= ~CORE_DLL_PDN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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if (msm_host->use_14lpp_dll_reset) {
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msm_cm_dll_set_freq(host);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG_2);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config_2);
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config &= ~CORE_DLL_CLOCK_DISABLE;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG_2);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config_2);
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}
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config |= CORE_DLL_EN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
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config = readl_relaxed(host->ioaddr +
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msm_offset->core_dll_config);
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config |= CORE_CK_OUT_EN;
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writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
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writel_relaxed(config, host->ioaddr +
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msm_offset->core_dll_config);
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/* Wait until DLL_LOCK bit of DLL_STATUS register becomes '1' */
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while (!(readl_relaxed(host->ioaddr + CORE_DLL_STATUS) &
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while (!(readl_relaxed(host->ioaddr + msm_offset->core_dll_status) &
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CORE_DLL_LOCK)) {
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/* max. wait for 50us sec for LOCK bit to be set */
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if (--wait_cnt == 0) {
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@ -672,19 +703,21 @@ static void msm_hc_select_default(struct sdhci_host *host)
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struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
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struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
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u32 config;
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const struct sdhci_msm_offset *msm_offset =
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msm_host->offset;
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if (!msm_host->use_cdclp533) {
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config = readl_relaxed(host->ioaddr +
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CORE_VENDOR_SPEC3);
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msm_offset->core_vendor_spec3);
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config &= ~CORE_PWRSAVE_DLL;
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writel_relaxed(config, host->ioaddr +
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CORE_VENDOR_SPEC3);
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msm_offset->core_vendor_spec3);
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}
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config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
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config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
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config &= ~CORE_HC_MCLK_SEL_MASK;
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config |= CORE_HC_MCLK_SEL_DFLT;
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writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
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writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
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/*
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* Disable HC_SELECT_IN to be able to use the UHS mode select
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@ -693,10 +726,10 @@ static void msm_hc_select_default(struct sdhci_host *host)
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* Write 0 to HC_SELECT_IN and HC_SELECT_IN_EN field
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* in VENDOR_SPEC_FUNC
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*/
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config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
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config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
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config &= ~CORE_HC_SELECT_IN_EN;
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config &= ~CORE_HC_SELECT_IN_MASK;
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writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
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writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
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/*
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* Make sure above writes impacting free running MCLK are completed
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@ -712,32 +745,36 @@ static void msm_hc_select_hs400(struct sdhci_host *host)
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struct mmc_ios ios = host->mmc->ios;
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u32 config, dll_lock;
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int rc;
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const struct sdhci_msm_offset *msm_offset =
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msm_host->offset;
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/* Select the divided clock (free running MCLK/2) */
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config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
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config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec);
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config &= ~CORE_HC_MCLK_SEL_MASK;
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config |= CORE_HC_MCLK_SEL_HS400;
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|
||||
writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec);
|
||||
/*
|
||||
* Select HS400 mode using the HC_SELECT_IN from VENDOR SPEC
|
||||
* register
|
||||
*/
|
||||
if ((msm_host->tuning_done || ios.enhanced_strobe) &&
|
||||
!msm_host->calibration_done) {
|
||||
config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_vendor_spec);
|
||||
config |= CORE_HC_SELECT_IN_HS400;
|
||||
config |= CORE_HC_SELECT_IN_EN;
|
||||
writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
msm_offset->core_vendor_spec);
|
||||
}
|
||||
if (!msm_host->clk_rate && !msm_host->use_cdclp533) {
|
||||
/*
|
||||
* Poll on DLL_LOCK or DDR_DLL_LOCK bits in
|
||||
* CORE_DLL_STATUS to be set. This should get set
|
||||
* core_dll_status to be set. This should get set
|
||||
* within 15 us at 200 MHz.
|
||||
*/
|
||||
rc = readl_relaxed_poll_timeout(host->ioaddr +
|
||||
CORE_DLL_STATUS,
|
||||
msm_offset->core_dll_status,
|
||||
dll_lock,
|
||||
(dll_lock &
|
||||
(CORE_DLL_LOCK |
|
||||
|
|
@ -789,6 +826,8 @@ static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host)
|
|||
struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
|
||||
u32 config, calib_done;
|
||||
int ret;
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
msm_host->offset;
|
||||
|
||||
pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
|
||||
|
||||
|
|
@ -805,13 +844,13 @@ static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host)
|
|||
if (ret)
|
||||
goto out;
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config);
|
||||
config |= CORE_CMD_DAT_TRACK_SEL;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config);
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DDR_200_CFG);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
config &= ~CORE_CDC_T4_DLY_SEL;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DDR_200_CFG);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_CSR_CDC_GEN_CFG);
|
||||
config &= ~CORE_CDC_SWITCH_BYPASS_OFF;
|
||||
|
|
@ -821,9 +860,9 @@ static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host)
|
|||
config |= CORE_CDC_SWITCH_RC_EN;
|
||||
writel_relaxed(config, host->ioaddr + CORE_CSR_CDC_GEN_CFG);
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DDR_200_CFG);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
config &= ~CORE_START_CDC_TRAFFIC;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DDR_200_CFG);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
|
||||
/* Perform CDC Register Initialization Sequence */
|
||||
|
||||
|
|
@ -875,9 +914,9 @@ static int sdhci_msm_cdclp533_calibration(struct sdhci_host *host)
|
|||
goto out;
|
||||
}
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DDR_200_CFG);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
config |= CORE_START_CDC_TRAFFIC;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DDR_200_CFG);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_ddr_200_cfg);
|
||||
out:
|
||||
pr_debug("%s: %s: Exit, ret %d\n", mmc_hostname(host->mmc),
|
||||
__func__, ret);
|
||||
|
|
@ -889,32 +928,38 @@ static int sdhci_msm_cm_dll_sdc4_calibration(struct sdhci_host *host)
|
|||
struct mmc_host *mmc = host->mmc;
|
||||
u32 dll_status, config;
|
||||
int ret;
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
sdhci_priv_msm_offset(host);
|
||||
|
||||
pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
|
||||
|
||||
/*
|
||||
* Currently the CORE_DDR_CONFIG register defaults to desired
|
||||
* 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.
|
||||
*/
|
||||
writel_relaxed(DDR_CONFIG_POR_VAL, host->ioaddr + CORE_DDR_CONFIG);
|
||||
writel_relaxed(DDR_CONFIG_POR_VAL, host->ioaddr +
|
||||
msm_offset->core_ddr_config);
|
||||
|
||||
if (mmc->ios.enhanced_strobe) {
|
||||
config = readl_relaxed(host->ioaddr + CORE_DDR_200_CFG);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_ddr_200_cfg);
|
||||
config |= CORE_CMDIN_RCLK_EN;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DDR_200_CFG);
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
msm_offset->core_ddr_200_cfg);
|
||||
}
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG_2);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_dll_config_2);
|
||||
config |= CORE_DDR_CAL_EN;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG_2);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_dll_config_2);
|
||||
|
||||
ret = readl_relaxed_poll_timeout(host->ioaddr + CORE_DLL_STATUS,
|
||||
dll_status,
|
||||
(dll_status & CORE_DDR_DLL_LOCK),
|
||||
10, 1000);
|
||||
ret = readl_relaxed_poll_timeout(host->ioaddr +
|
||||
msm_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",
|
||||
|
|
@ -922,9 +967,9 @@ static int sdhci_msm_cm_dll_sdc4_calibration(struct sdhci_host *host)
|
|||
goto out;
|
||||
}
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC3);
|
||||
config = readl_relaxed(host->ioaddr + msm_offset->core_vendor_spec3);
|
||||
config |= CORE_PWRSAVE_DLL;
|
||||
writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC3);
|
||||
writel_relaxed(config, host->ioaddr + msm_offset->core_vendor_spec3);
|
||||
|
||||
/*
|
||||
* Drain writebuffer to ensure above DLL calibration
|
||||
|
|
@ -944,6 +989,8 @@ static int sdhci_msm_hs400_dll_calibration(struct sdhci_host *host)
|
|||
struct mmc_host *mmc = host->mmc;
|
||||
int ret;
|
||||
u32 config;
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
msm_host->offset;
|
||||
|
||||
pr_debug("%s: %s: Enter\n", mmc_hostname(host->mmc), __func__);
|
||||
|
||||
|
|
@ -961,9 +1008,11 @@ static int sdhci_msm_hs400_dll_calibration(struct sdhci_host *host)
|
|||
msm_host->saved_tuning_phase);
|
||||
if (ret)
|
||||
goto out;
|
||||
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
config |= CORE_CMD_DAT_TRACK_SEL;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
}
|
||||
|
||||
if (msm_host->use_cdclp533)
|
||||
|
|
@ -1093,6 +1142,8 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
|
|||
struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
|
||||
u16 ctrl_2;
|
||||
u32 config;
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
msm_host->offset;
|
||||
|
||||
ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
|
||||
/* Select Bus Speed Mode for host */
|
||||
|
|
@ -1133,13 +1184,17 @@ static void sdhci_msm_set_uhs_signaling(struct sdhci_host *host,
|
|||
* DLL is not required for clock <= 100MHz
|
||||
* Thus, make sure DLL it is disabled when not required
|
||||
*/
|
||||
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
config |= CORE_DLL_RST;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_DLL_CONFIG);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
config |= CORE_DLL_PDN;
|
||||
writel_relaxed(config, host->ioaddr + CORE_DLL_CONFIG);
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
msm_offset->core_dll_config);
|
||||
|
||||
/*
|
||||
* The DLL needs to be restored and CDCLP533 recalibrated
|
||||
|
|
@ -1181,7 +1236,9 @@ static void sdhci_msm_check_power_status(struct sdhci_host *host, u32 req_type)
|
|||
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
||||
struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
|
||||
bool done = false;
|
||||
u32 val;
|
||||
u32 val = SWITCHABLE_SIGNALING_VOLTAGE;
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
msm_host->offset;
|
||||
|
||||
pr_debug("%s: %s: request %d curr_pwr_state %x curr_io_level %x\n",
|
||||
mmc_hostname(host->mmc), __func__, req_type,
|
||||
|
|
@ -1190,8 +1247,12 @@ static void sdhci_msm_check_power_status(struct sdhci_host *host, u32 req_type)
|
|||
/*
|
||||
* The power interrupt will not be generated for signal voltage
|
||||
* switches if SWITCHABLE_SIGNALING_VOLTAGE in MCI_GENERICS is not set.
|
||||
* Since sdhci-msm-v5, this bit has been removed and SW must consider
|
||||
* it as always set.
|
||||
*/
|
||||
val = readl(msm_host->core_mem + CORE_MCI_GENERICS);
|
||||
if (!msm_host->mci_removed)
|
||||
val = msm_host_readl(msm_host, host,
|
||||
msm_offset->core_generics);
|
||||
if ((req_type & REQ_IO_HIGH || req_type & REQ_IO_LOW) &&
|
||||
!(val & SWITCHABLE_SIGNALING_VOLTAGE)) {
|
||||
return;
|
||||
|
|
@ -1239,12 +1300,14 @@ static void sdhci_msm_dump_pwr_ctrl_regs(struct sdhci_host *host)
|
|||
{
|
||||
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
|
||||
struct sdhci_msm_host *msm_host = sdhci_pltfm_priv(pltfm_host);
|
||||
const struct sdhci_msm_offset *msm_offset =
|
||||
msm_host->offset;
|
||||
|
||||
pr_err("%s: PWRCTL_STATUS: 0x%08x | PWRCTL_MASK: 0x%08x | PWRCTL_CTL: 0x%08x\n",
|
||||
mmc_hostname(host->mmc),
|
||||
readl_relaxed(msm_host->core_mem + CORE_PWRCTL_STATUS),
|
||||
readl_relaxed(msm_host->core_mem + CORE_PWRCTL_MASK),
|
||||
readl_relaxed(msm_host->core_mem + CORE_PWRCTL_CTL));
|
||||
mmc_hostname(host->mmc),
|
||||
msm_host_readl(msm_host, host, msm_offset->core_pwrctl_status),
|
||||
msm_host_readl(msm_host, host, msm_offset->core_pwrctl_mask),
|
||||
msm_host_readl(msm_host, host, msm_offset->core_pwrctl_ctl));
|
||||
}
|
||||
|
||||
static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
||||
|
|
@ -1255,11 +1318,14 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
int retry = 10;
|
||||
u32 pwr_state = 0, io_level = 0;
|
||||
u32 config;
|
||||
const struct sdhci_msm_offset *msm_offset = msm_host->offset;
|
||||
|
||||
irq_status = readl_relaxed(msm_host->core_mem + CORE_PWRCTL_STATUS);
|
||||
irq_status = msm_host_readl(msm_host, host,
|
||||
msm_offset->core_pwrctl_status);
|
||||
irq_status &= INT_MASK;
|
||||
|
||||
writel_relaxed(irq_status, msm_host->core_mem + CORE_PWRCTL_CLEAR);
|
||||
msm_host_writel(msm_host, irq_status, host,
|
||||
msm_offset->core_pwrctl_clear);
|
||||
|
||||
/*
|
||||
* There is a rare HW scenario where the first clear pulse could be
|
||||
|
|
@ -1268,8 +1334,8 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
* sure status register is cleared. Otherwise, this will result in
|
||||
* a spurious power IRQ resulting in system instability.
|
||||
*/
|
||||
while (irq_status & readl_relaxed(msm_host->core_mem +
|
||||
CORE_PWRCTL_STATUS)) {
|
||||
while (irq_status & msm_host_readl(msm_host, host,
|
||||
msm_offset->core_pwrctl_status)) {
|
||||
if (retry == 0) {
|
||||
pr_err("%s: Timedout clearing (0x%x) pwrctl status register\n",
|
||||
mmc_hostname(host->mmc), irq_status);
|
||||
|
|
@ -1277,8 +1343,8 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
WARN_ON(1);
|
||||
break;
|
||||
}
|
||||
writel_relaxed(irq_status,
|
||||
msm_host->core_mem + CORE_PWRCTL_CLEAR);
|
||||
msm_host_writel(msm_host, irq_status, host,
|
||||
msm_offset->core_pwrctl_clear);
|
||||
retry--;
|
||||
udelay(10);
|
||||
}
|
||||
|
|
@ -1309,7 +1375,8 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
* report back if it succeded or not to this register. The voltage
|
||||
* switches are handled by the sdhci core, so just report success.
|
||||
*/
|
||||
writel_relaxed(irq_ack, msm_host->core_mem + CORE_PWRCTL_CTL);
|
||||
msm_host_writel(msm_host, irq_ack, host,
|
||||
msm_offset->core_pwrctl_ctl);
|
||||
|
||||
/*
|
||||
* If we don't have info regarding the voltage levels supported by
|
||||
|
|
@ -1328,7 +1395,8 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
* controllers with only 1.8V, we will set the IO PAD bit
|
||||
* without waiting for a REQ_IO_LOW.
|
||||
*/
|
||||
config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_vendor_spec);
|
||||
new_config = config;
|
||||
|
||||
if ((io_level & REQ_IO_HIGH) &&
|
||||
|
|
@ -1339,8 +1407,8 @@ static void sdhci_msm_handle_pwr_irq(struct sdhci_host *host, int irq)
|
|||
new_config |= CORE_IO_PAD_PWR_SWITCH;
|
||||
|
||||
if (config ^ new_config)
|
||||
writel_relaxed(new_config,
|
||||
host->ioaddr + CORE_VENDOR_SPEC);
|
||||
writel_relaxed(new_config, host->ioaddr +
|
||||
msm_offset->core_vendor_spec);
|
||||
}
|
||||
|
||||
if (pwr_state)
|
||||
|
|
@ -1501,6 +1569,7 @@ static void sdhci_msm_set_regulator_caps(struct sdhci_msm_host *msm_host)
|
|||
struct regulator *supply = mmc->supply.vqmmc;
|
||||
u32 caps = 0, config;
|
||||
struct sdhci_host *host = mmc_priv(mmc);
|
||||
const struct sdhci_msm_offset *msm_offset = msm_host->offset;
|
||||
|
||||
if (!IS_ERR(mmc->supply.vqmmc)) {
|
||||
if (regulator_is_supported_voltage(supply, 1700000, 1950000))
|
||||
|
|
@ -1520,7 +1589,8 @@ static void sdhci_msm_set_regulator_caps(struct sdhci_msm_host *msm_host)
|
|||
*/
|
||||
u32 io_level = msm_host->curr_io_level;
|
||||
|
||||
config = readl_relaxed(host->ioaddr + CORE_VENDOR_SPEC);
|
||||
config = readl_relaxed(host->ioaddr +
|
||||
msm_offset->core_vendor_spec);
|
||||
config |= CORE_IO_PAD_PWR_SWITCH_EN;
|
||||
|
||||
if ((io_level & REQ_IO_HIGH) && (caps & CORE_3_0V_SUPPORT))
|
||||
|
|
@ -1528,7 +1598,8 @@ static void sdhci_msm_set_regulator_caps(struct sdhci_msm_host *msm_host)
|
|||
else if ((io_level & REQ_IO_LOW) || (caps & CORE_1_8V_SUPPORT))
|
||||
config |= CORE_IO_PAD_PWR_SWITCH;
|
||||
|
||||
writel_relaxed(config, host->ioaddr + CORE_VENDOR_SPEC);
|
||||
writel_relaxed(config,
|
||||
host->ioaddr + msm_offset->core_vendor_spec);
|
||||
}
|
||||
msm_host->caps_0 |= caps;
|
||||
pr_debug("%s: supported caps: 0x%08x\n", mmc_hostname(mmc), caps);
|
||||
|
|
@ -1557,7 +1628,8 @@ static const struct sdhci_msm_variant_info sdhci_msm_v5_var = {
|
|||
};
|
||||
|
||||
static const struct of_device_id sdhci_msm_dt_match[] = {
|
||||
{ .compatible = "qcom,sdhci-msm-v4" },
|
||||
{.compatible = "qcom,sdhci-msm-v4", .data = &sdhci_msm_mci_var},
|
||||
{.compatible = "qcom,sdhci-msm-v5", .data = &sdhci_msm_v5_var},
|
||||
{},
|
||||
};
|
||||
|
||||
|
|
@ -1593,6 +1665,8 @@ static int sdhci_msm_probe(struct platform_device *pdev)
|
|||
u16 host_version, core_minor;
|
||||
u32 core_version, config;
|
||||
u8 core_major;
|
||||
const struct sdhci_msm_offset *msm_offset;
|
||||
const struct sdhci_msm_variant_info *var_info;
|
||||
|
||||
host = sdhci_pltfm_init(pdev, &sdhci_msm_pdata, sizeof(*msm_host));
|
||||
if (IS_ERR(host))
|
||||
|
|
@ -1608,6 +1682,18 @@ static int sdhci_msm_probe(struct platform_device *pdev)
|
|||
if (ret)
|
||||
goto pltfm_free;
|
||||
|
||||
/*
|
||||
* Based on the compatible string, load the required msm host info from
|
||||
* the data associated with the version info.
|
||||
*/
|
||||
var_info = of_device_get_match_data(&pdev->dev);
|
||||
|
||||
msm_host->mci_removed = var_info->mci_removed;
|
||||
msm_host->var_ops = var_info->var_ops;
|
||||
msm_host->offset = var_info->offset;
|
||||
|
||||
msm_offset = msm_host->offset;
|
||||
|
||||
sdhci_get_of_property(pdev);
|
||||
|
||||
msm_host->saved_tuning_phase = INVALID_TUNING_PHASE;
|
||||
|
|
@ -1672,32 +1758,40 @@ static int sdhci_msm_probe(struct platform_device *pdev)
|
|||
dev_warn(&pdev->dev, "TCXO clk not present (%d)\n", ret);
|
||||
}
|
||||
|
||||
core_memres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
||||
msm_host->core_mem = devm_ioremap_resource(&pdev->dev, core_memres);
|
||||
if (!msm_host->mci_removed) {
|
||||
core_memres = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
||||
msm_host->core_mem = devm_ioremap_resource(&pdev->dev,
|
||||
core_memres);
|
||||
|
||||
if (IS_ERR(msm_host->core_mem)) {
|
||||
dev_err(&pdev->dev, "Failed to remap registers\n");
|
||||
ret = PTR_ERR(msm_host->core_mem);
|
||||
goto clk_disable;
|
||||
if (IS_ERR(msm_host->core_mem)) {
|
||||
dev_err(&pdev->dev, "Failed to remap registers\n");
|
||||
ret = PTR_ERR(msm_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 + CORE_VENDOR_SPEC);
|
||||
host->ioaddr + msm_offset->core_vendor_spec);
|
||||
|
||||
/* Set HC_MODE_EN bit in HC_MODE register */
|
||||
writel_relaxed(HC_MODE_EN, (msm_host->core_mem + CORE_HC_MODE));
|
||||
|
||||
config = readl_relaxed(msm_host->core_mem + CORE_HC_MODE);
|
||||
config |= FF_CLK_SW_RST_DIS;
|
||||
writel_relaxed(config, msm_host->core_mem + CORE_HC_MODE);
|
||||
if (!msm_host->mci_removed) {
|
||||
/* Set HC_MODE_EN bit in HC_MODE register */
|
||||
msm_host_writel(msm_host, HC_MODE_EN, host,
|
||||
msm_offset->core_hc_mode);
|
||||
config = msm_host_readl(msm_host, host,
|
||||
msm_offset->core_hc_mode);
|
||||
config |= FF_CLK_SW_RST_DIS;
|
||||
msm_host_writel(msm_host, config, host,
|
||||
msm_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 = readl_relaxed(msm_host->core_mem + CORE_MCI_VERSION);
|
||||
core_version = msm_host_readl(msm_host, host,
|
||||
msm_offset->core_mci_version);
|
||||
core_major = (core_version & CORE_VERSION_MAJOR_MASK) >>
|
||||
CORE_VERSION_MAJOR_SHIFT;
|
||||
core_minor = core_version & CORE_VERSION_MINOR_MASK;
|
||||
|
|
@ -1722,7 +1816,7 @@ static int sdhci_msm_probe(struct platform_device *pdev)
|
|||
config = readl_relaxed(host->ioaddr + SDHCI_CAPABILITIES);
|
||||
config |= SDHCI_CAN_VDD_300 | SDHCI_CAN_DO_8BIT;
|
||||
writel_relaxed(config, host->ioaddr +
|
||||
CORE_VENDOR_SPEC_CAPABILITIES0);
|
||||
msm_offset->core_vendor_spec_capabilities0);
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1751,7 +1845,8 @@ static int sdhci_msm_probe(struct platform_device *pdev)
|
|||
|
||||
sdhci_msm_init_pwr_irq_wait(msm_host);
|
||||
/* Enable pwr irq interrupts */
|
||||
writel_relaxed(INT_MASK, msm_host->core_mem + CORE_PWRCTL_MASK);
|
||||
msm_host_writel(msm_host, INT_MASK, host,
|
||||
msm_offset->core_pwrctl_mask);
|
||||
|
||||
ret = devm_request_threaded_irq(&pdev->dev, msm_host->pwr_irq, NULL,
|
||||
sdhci_msm_pwr_irq, IRQF_ONESHOT,
|
||||
|
|
|
|||
Loading…
Reference in New Issue