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path: root/drivers/mmc/host/sdhci-pci-gli.c
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Diffstat (limited to 'drivers/mmc/host/sdhci-pci-gli.c')
-rw-r--r--drivers/mmc/host/sdhci-pci-gli.c1221
1 files changed, 1221 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-pci-gli.c b/drivers/mmc/host/sdhci-pci-gli.c
new file mode 100644
index 000000000..3b5b5c139
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pci-gli.c
@@ -0,0 +1,1221 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Genesys Logic, Inc.
+ *
+ * Authors: Ben Chuang <ben.chuang@genesyslogic.com.tw>
+ *
+ * Version: v0.9.0 (2019-08-08)
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/pci.h>
+#include <linux/mmc/mmc.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/iopoll.h>
+#include "sdhci.h"
+#include "sdhci-pci.h"
+#include "cqhci.h"
+
+/* Genesys Logic extra registers */
+#define SDHCI_GLI_9750_WT 0x800
+#define SDHCI_GLI_9750_WT_EN BIT(0)
+#define GLI_9750_WT_EN_ON 0x1
+#define GLI_9750_WT_EN_OFF 0x0
+
+#define PCI_GLI_9750_PM_CTRL 0xFC
+#define PCI_GLI_9750_PM_STATE GENMASK(1, 0)
+
+#define PCI_GLI_9750_CORRERR_MASK 0x214
+#define PCI_GLI_9750_CORRERR_MASK_REPLAY_TIMER_TIMEOUT BIT(12)
+
+#define SDHCI_GLI_9750_CFG2 0x848
+#define SDHCI_GLI_9750_CFG2_L1DLY GENMASK(28, 24)
+#define GLI_9750_CFG2_L1DLY_VALUE 0x1F
+
+#define SDHCI_GLI_9750_DRIVING 0x860
+#define SDHCI_GLI_9750_DRIVING_1 GENMASK(11, 0)
+#define SDHCI_GLI_9750_DRIVING_2 GENMASK(27, 26)
+#define GLI_9750_DRIVING_1_VALUE 0xFFF
+#define GLI_9750_DRIVING_2_VALUE 0x3
+#define SDHCI_GLI_9750_SEL_1 BIT(29)
+#define SDHCI_GLI_9750_SEL_2 BIT(31)
+#define SDHCI_GLI_9750_ALL_RST (BIT(24)|BIT(25)|BIT(28)|BIT(30))
+
+#define SDHCI_GLI_9750_PLL 0x864
+#define SDHCI_GLI_9750_PLL_LDIV GENMASK(9, 0)
+#define SDHCI_GLI_9750_PLL_PDIV GENMASK(14, 12)
+#define SDHCI_GLI_9750_PLL_DIR BIT(15)
+#define SDHCI_GLI_9750_PLL_TX2_INV BIT(23)
+#define SDHCI_GLI_9750_PLL_TX2_DLY GENMASK(22, 20)
+#define GLI_9750_PLL_TX2_INV_VALUE 0x1
+#define GLI_9750_PLL_TX2_DLY_VALUE 0x0
+#define SDHCI_GLI_9750_PLLSSC_STEP GENMASK(28, 24)
+#define SDHCI_GLI_9750_PLLSSC_EN BIT(31)
+
+#define SDHCI_GLI_9750_PLLSSC 0x86C
+#define SDHCI_GLI_9750_PLLSSC_PPM GENMASK(31, 16)
+
+#define SDHCI_GLI_9750_SW_CTRL 0x874
+#define SDHCI_GLI_9750_SW_CTRL_4 GENMASK(7, 6)
+#define GLI_9750_SW_CTRL_4_VALUE 0x3
+
+#define SDHCI_GLI_9750_MISC 0x878
+#define SDHCI_GLI_9750_MISC_TX1_INV BIT(2)
+#define SDHCI_GLI_9750_MISC_RX_INV BIT(3)
+#define SDHCI_GLI_9750_MISC_TX1_DLY GENMASK(6, 4)
+#define GLI_9750_MISC_TX1_INV_VALUE 0x0
+#define GLI_9750_MISC_RX_INV_ON 0x1
+#define GLI_9750_MISC_RX_INV_OFF 0x0
+#define GLI_9750_MISC_RX_INV_VALUE GLI_9750_MISC_RX_INV_OFF
+#define GLI_9750_MISC_TX1_DLY_VALUE 0x5
+#define SDHCI_GLI_9750_MISC_SSC_OFF BIT(26)
+
+#define SDHCI_GLI_9750_TUNING_CONTROL 0x540
+#define SDHCI_GLI_9750_TUNING_CONTROL_EN BIT(4)
+#define GLI_9750_TUNING_CONTROL_EN_ON 0x1
+#define GLI_9750_TUNING_CONTROL_EN_OFF 0x0
+#define SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1 BIT(16)
+#define SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2 GENMASK(20, 19)
+#define GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE 0x1
+#define GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE 0x2
+
+#define SDHCI_GLI_9750_TUNING_PARAMETERS 0x544
+#define SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY GENMASK(2, 0)
+#define GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE 0x1
+
+#define SDHCI_GLI_9763E_CTRL_HS400 0x7
+
+#define SDHCI_GLI_9763E_HS400_ES_REG 0x52C
+#define SDHCI_GLI_9763E_HS400_ES_BIT BIT(8)
+
+#define PCIE_GLI_9763E_VHS 0x884
+#define GLI_9763E_VHS_REV GENMASK(19, 16)
+#define GLI_9763E_VHS_REV_R 0x0
+#define GLI_9763E_VHS_REV_M 0x1
+#define GLI_9763E_VHS_REV_W 0x2
+#define PCIE_GLI_9763E_MB 0x888
+#define GLI_9763E_MB_CMDQ_OFF BIT(19)
+#define GLI_9763E_MB_ERP_ON BIT(7)
+#define PCIE_GLI_9763E_SCR 0x8E0
+#define GLI_9763E_SCR_AXI_REQ BIT(9)
+
+#define PCIE_GLI_9763E_CFG 0x8A0
+#define GLI_9763E_CFG_LPSN_DIS BIT(12)
+
+#define PCIE_GLI_9763E_CFG2 0x8A4
+#define GLI_9763E_CFG2_L1DLY GENMASK(28, 19)
+#define GLI_9763E_CFG2_L1DLY_MID 0x54
+
+#define PCIE_GLI_9763E_MMC_CTRL 0x960
+#define GLI_9763E_HS400_SLOW BIT(3)
+
+#define PCIE_GLI_9763E_CLKRXDLY 0x934
+#define GLI_9763E_HS400_RXDLY GENMASK(31, 28)
+#define GLI_9763E_HS400_RXDLY_5 0x5
+
+#define SDHCI_GLI_9763E_CQE_BASE_ADDR 0x200
+#define GLI_9763E_CQE_TRNS_MODE (SDHCI_TRNS_MULTI | \
+ SDHCI_TRNS_BLK_CNT_EN | \
+ SDHCI_TRNS_DMA)
+
+#define PCI_GLI_9755_WT 0x800
+#define PCI_GLI_9755_WT_EN BIT(0)
+#define GLI_9755_WT_EN_ON 0x1
+#define GLI_9755_WT_EN_OFF 0x0
+
+#define PCI_GLI_9755_PECONF 0x44
+#define PCI_GLI_9755_LFCLK GENMASK(14, 12)
+#define PCI_GLI_9755_DMACLK BIT(29)
+#define PCI_GLI_9755_INVERT_CD BIT(30)
+#define PCI_GLI_9755_INVERT_WP BIT(31)
+
+#define PCI_GLI_9755_CFG2 0x48
+#define PCI_GLI_9755_CFG2_L1DLY GENMASK(28, 24)
+#define GLI_9755_CFG2_L1DLY_VALUE 0x1F
+
+#define PCI_GLI_9755_PLL 0x64
+#define PCI_GLI_9755_PLL_LDIV GENMASK(9, 0)
+#define PCI_GLI_9755_PLL_PDIV GENMASK(14, 12)
+#define PCI_GLI_9755_PLL_DIR BIT(15)
+#define PCI_GLI_9755_PLLSSC_STEP GENMASK(28, 24)
+#define PCI_GLI_9755_PLLSSC_EN BIT(31)
+
+#define PCI_GLI_9755_PLLSSC 0x68
+#define PCI_GLI_9755_PLLSSC_PPM GENMASK(15, 0)
+
+#define PCI_GLI_9755_SerDes 0x70
+#define PCI_GLI_9755_SCP_DIS BIT(19)
+
+#define PCI_GLI_9755_MISC 0x78
+#define PCI_GLI_9755_MISC_SSC_OFF BIT(26)
+
+#define PCI_GLI_9755_PM_CTRL 0xFC
+#define PCI_GLI_9755_PM_STATE GENMASK(1, 0)
+
+#define PCI_GLI_9755_CORRERR_MASK 0x214
+#define PCI_GLI_9755_CORRERR_MASK_REPLAY_TIMER_TIMEOUT BIT(12)
+
+#define GLI_MAX_TUNING_LOOP 40
+
+/* Genesys Logic chipset */
+static inline void gl9750_wt_on(struct sdhci_host *host)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT);
+ wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9750_WT_EN_ON)
+ return;
+
+ wt_value &= ~SDHCI_GLI_9750_WT_EN;
+ wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_ON);
+
+ sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT);
+}
+
+static inline void gl9750_wt_off(struct sdhci_host *host)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT);
+ wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9750_WT_EN_OFF)
+ return;
+
+ wt_value &= ~SDHCI_GLI_9750_WT_EN;
+ wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_OFF);
+
+ sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT);
+}
+
+static void gli_set_9750(struct sdhci_host *host)
+{
+ u32 driving_value;
+ u32 pll_value;
+ u32 sw_ctrl_value;
+ u32 misc_value;
+ u32 parameter_value;
+ u32 control_value;
+ u16 ctrl2;
+
+ gl9750_wt_on(host);
+
+ driving_value = sdhci_readl(host, SDHCI_GLI_9750_DRIVING);
+ pll_value = sdhci_readl(host, SDHCI_GLI_9750_PLL);
+ sw_ctrl_value = sdhci_readl(host, SDHCI_GLI_9750_SW_CTRL);
+ misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC);
+ parameter_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_PARAMETERS);
+ control_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_CONTROL);
+
+ driving_value &= ~(SDHCI_GLI_9750_DRIVING_1);
+ driving_value &= ~(SDHCI_GLI_9750_DRIVING_2);
+ driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_1,
+ GLI_9750_DRIVING_1_VALUE);
+ driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_2,
+ GLI_9750_DRIVING_2_VALUE);
+ driving_value &= ~(SDHCI_GLI_9750_SEL_1|SDHCI_GLI_9750_SEL_2|SDHCI_GLI_9750_ALL_RST);
+ driving_value |= SDHCI_GLI_9750_SEL_2;
+ sdhci_writel(host, driving_value, SDHCI_GLI_9750_DRIVING);
+
+ sw_ctrl_value &= ~SDHCI_GLI_9750_SW_CTRL_4;
+ sw_ctrl_value |= FIELD_PREP(SDHCI_GLI_9750_SW_CTRL_4,
+ GLI_9750_SW_CTRL_4_VALUE);
+ sdhci_writel(host, sw_ctrl_value, SDHCI_GLI_9750_SW_CTRL);
+
+ /* reset the tuning flow after reinit and before starting tuning */
+ pll_value &= ~SDHCI_GLI_9750_PLL_TX2_INV;
+ pll_value &= ~SDHCI_GLI_9750_PLL_TX2_DLY;
+ pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_INV,
+ GLI_9750_PLL_TX2_INV_VALUE);
+ pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_DLY,
+ GLI_9750_PLL_TX2_DLY_VALUE);
+
+ misc_value &= ~SDHCI_GLI_9750_MISC_TX1_INV;
+ misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV;
+ misc_value &= ~SDHCI_GLI_9750_MISC_TX1_DLY;
+ misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_INV,
+ GLI_9750_MISC_TX1_INV_VALUE);
+ misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
+ GLI_9750_MISC_RX_INV_VALUE);
+ misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_DLY,
+ GLI_9750_MISC_TX1_DLY_VALUE);
+
+ parameter_value &= ~SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY;
+ parameter_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY,
+ GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE);
+
+ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1;
+ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2;
+ control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1,
+ GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE);
+ control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2,
+ GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE);
+
+ sdhci_writel(host, pll_value, SDHCI_GLI_9750_PLL);
+ sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC);
+
+ /* disable tuned clk */
+ ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ ctrl2 &= ~SDHCI_CTRL_TUNED_CLK;
+ sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);
+
+ /* enable tuning parameters control */
+ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN;
+ control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN,
+ GLI_9750_TUNING_CONTROL_EN_ON);
+ sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL);
+
+ /* write tuning parameters */
+ sdhci_writel(host, parameter_value, SDHCI_GLI_9750_TUNING_PARAMETERS);
+
+ /* disable tuning parameters control */
+ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN;
+ control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN,
+ GLI_9750_TUNING_CONTROL_EN_OFF);
+ sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL);
+
+ /* clear tuned clk */
+ ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ ctrl2 &= ~SDHCI_CTRL_TUNED_CLK;
+ sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2);
+
+ gl9750_wt_off(host);
+}
+
+static void gli_set_9750_rx_inv(struct sdhci_host *host, bool b)
+{
+ u32 misc_value;
+
+ gl9750_wt_on(host);
+
+ misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC);
+ misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV;
+ if (b) {
+ misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
+ GLI_9750_MISC_RX_INV_ON);
+ } else {
+ misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV,
+ GLI_9750_MISC_RX_INV_OFF);
+ }
+ sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC);
+
+ gl9750_wt_off(host);
+}
+
+static int __sdhci_execute_tuning_9750(struct sdhci_host *host, u32 opcode)
+{
+ int i;
+ int rx_inv;
+
+ for (rx_inv = 0; rx_inv < 2; rx_inv++) {
+ gli_set_9750_rx_inv(host, !!rx_inv);
+ sdhci_start_tuning(host);
+
+ for (i = 0; i < GLI_MAX_TUNING_LOOP; i++) {
+ u16 ctrl;
+
+ sdhci_send_tuning(host, opcode);
+
+ if (!host->tuning_done) {
+ sdhci_abort_tuning(host, opcode);
+ break;
+ }
+
+ ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) {
+ if (ctrl & SDHCI_CTRL_TUNED_CLK)
+ return 0; /* Success! */
+ break;
+ }
+ }
+ }
+ if (!host->tuning_done) {
+ pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n",
+ mmc_hostname(host->mmc));
+ return -ETIMEDOUT;
+ }
+
+ pr_info("%s: Tuning failed, falling back to fixed sampling clock\n",
+ mmc_hostname(host->mmc));
+ sdhci_reset_tuning(host);
+
+ return -EAGAIN;
+}
+
+static int gl9750_execute_tuning(struct sdhci_host *host, u32 opcode)
+{
+ host->mmc->retune_period = 0;
+ if (host->tuning_mode == SDHCI_TUNING_MODE_1)
+ host->mmc->retune_period = host->tuning_count;
+
+ gli_set_9750(host);
+ host->tuning_err = __sdhci_execute_tuning_9750(host, opcode);
+ sdhci_end_tuning(host);
+
+ return 0;
+}
+
+static void gl9750_disable_ssc_pll(struct sdhci_host *host)
+{
+ u32 pll;
+
+ gl9750_wt_on(host);
+ pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
+ pll &= ~(SDHCI_GLI_9750_PLL_DIR | SDHCI_GLI_9750_PLLSSC_EN);
+ sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
+ gl9750_wt_off(host);
+}
+
+static void gl9750_set_pll(struct sdhci_host *host, u8 dir, u16 ldiv, u8 pdiv)
+{
+ u32 pll;
+
+ gl9750_wt_on(host);
+ pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
+ pll &= ~(SDHCI_GLI_9750_PLL_LDIV |
+ SDHCI_GLI_9750_PLL_PDIV |
+ SDHCI_GLI_9750_PLL_DIR);
+ pll |= FIELD_PREP(SDHCI_GLI_9750_PLL_LDIV, ldiv) |
+ FIELD_PREP(SDHCI_GLI_9750_PLL_PDIV, pdiv) |
+ FIELD_PREP(SDHCI_GLI_9750_PLL_DIR, dir);
+ sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
+ gl9750_wt_off(host);
+
+ /* wait for pll stable */
+ mdelay(1);
+}
+
+static bool gl9750_ssc_enable(struct sdhci_host *host)
+{
+ u32 misc;
+ u8 off;
+
+ gl9750_wt_on(host);
+ misc = sdhci_readl(host, SDHCI_GLI_9750_MISC);
+ off = FIELD_GET(SDHCI_GLI_9750_MISC_SSC_OFF, misc);
+ gl9750_wt_off(host);
+
+ return !off;
+}
+
+static void gl9750_set_ssc(struct sdhci_host *host, u8 enable, u8 step, u16 ppm)
+{
+ u32 pll;
+ u32 ssc;
+
+ gl9750_wt_on(host);
+ pll = sdhci_readl(host, SDHCI_GLI_9750_PLL);
+ ssc = sdhci_readl(host, SDHCI_GLI_9750_PLLSSC);
+ pll &= ~(SDHCI_GLI_9750_PLLSSC_STEP |
+ SDHCI_GLI_9750_PLLSSC_EN);
+ ssc &= ~SDHCI_GLI_9750_PLLSSC_PPM;
+ pll |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_STEP, step) |
+ FIELD_PREP(SDHCI_GLI_9750_PLLSSC_EN, enable);
+ ssc |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_PPM, ppm);
+ sdhci_writel(host, ssc, SDHCI_GLI_9750_PLLSSC);
+ sdhci_writel(host, pll, SDHCI_GLI_9750_PLL);
+ gl9750_wt_off(host);
+}
+
+static void gl9750_set_ssc_pll_205mhz(struct sdhci_host *host)
+{
+ bool enable = gl9750_ssc_enable(host);
+
+ /* set pll to 205MHz and ssc */
+ gl9750_set_ssc(host, enable, 0xF, 0x5A1D);
+ gl9750_set_pll(host, 0x1, 0x246, 0x0);
+}
+
+static void gl9750_set_ssc_pll_100mhz(struct sdhci_host *host)
+{
+ bool enable = gl9750_ssc_enable(host);
+
+ /* set pll to 100MHz and ssc */
+ gl9750_set_ssc(host, enable, 0xE, 0x51EC);
+ gl9750_set_pll(host, 0x1, 0x244, 0x1);
+}
+
+static void gl9750_set_ssc_pll_50mhz(struct sdhci_host *host)
+{
+ bool enable = gl9750_ssc_enable(host);
+
+ /* set pll to 50MHz and ssc */
+ gl9750_set_ssc(host, enable, 0xE, 0x51EC);
+ gl9750_set_pll(host, 0x1, 0x244, 0x3);
+}
+
+static void sdhci_gl9750_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct mmc_ios *ios = &host->mmc->ios;
+ u16 clk;
+
+ host->mmc->actual_clock = 0;
+
+ gl9750_disable_ssc_pll(host);
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+ if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
+ host->mmc->actual_clock = 205000000;
+ gl9750_set_ssc_pll_205mhz(host);
+ } else if (clock == 100000000) {
+ gl9750_set_ssc_pll_100mhz(host);
+ } else if (clock == 50000000) {
+ gl9750_set_ssc_pll_50mhz(host);
+ }
+
+ sdhci_enable_clk(host, clk);
+}
+
+static void gl9750_hw_setting(struct sdhci_host *host)
+{
+ struct sdhci_pci_slot *slot = sdhci_priv(host);
+ struct pci_dev *pdev;
+ u32 value;
+
+ pdev = slot->chip->pdev;
+
+ gl9750_wt_on(host);
+
+ value = sdhci_readl(host, SDHCI_GLI_9750_CFG2);
+ value &= ~SDHCI_GLI_9750_CFG2_L1DLY;
+ /* set ASPM L1 entry delay to 7.9us */
+ value |= FIELD_PREP(SDHCI_GLI_9750_CFG2_L1DLY,
+ GLI_9750_CFG2_L1DLY_VALUE);
+ sdhci_writel(host, value, SDHCI_GLI_9750_CFG2);
+
+ /* toggle PM state to allow GL9750 to enter ASPM L1.2 */
+ pci_read_config_dword(pdev, PCI_GLI_9750_PM_CTRL, &value);
+ value |= PCI_GLI_9750_PM_STATE;
+ pci_write_config_dword(pdev, PCI_GLI_9750_PM_CTRL, value);
+ value &= ~PCI_GLI_9750_PM_STATE;
+ pci_write_config_dword(pdev, PCI_GLI_9750_PM_CTRL, value);
+
+ /* mask the replay timer timeout of AER */
+ pci_read_config_dword(pdev, PCI_GLI_9750_CORRERR_MASK, &value);
+ value |= PCI_GLI_9750_CORRERR_MASK_REPLAY_TIMER_TIMEOUT;
+ pci_write_config_dword(pdev, PCI_GLI_9750_CORRERR_MASK, value);
+
+ gl9750_wt_off(host);
+}
+
+static void gli_pcie_enable_msi(struct sdhci_pci_slot *slot)
+{
+ int ret;
+
+ ret = pci_alloc_irq_vectors(slot->chip->pdev, 1, 1,
+ PCI_IRQ_MSI | PCI_IRQ_MSIX);
+ if (ret < 0) {
+ pr_warn("%s: enable PCI MSI failed, error=%d\n",
+ mmc_hostname(slot->host->mmc), ret);
+ return;
+ }
+
+ slot->host->irq = pci_irq_vector(slot->chip->pdev, 0);
+}
+
+static inline void gl9755_wt_on(struct pci_dev *pdev)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
+ wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9755_WT_EN_ON)
+ return;
+
+ wt_value &= ~PCI_GLI_9755_WT_EN;
+ wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_ON);
+
+ pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
+}
+
+static inline void gl9755_wt_off(struct pci_dev *pdev)
+{
+ u32 wt_value;
+ u32 wt_enable;
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value);
+ wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value);
+
+ if (wt_enable == GLI_9755_WT_EN_OFF)
+ return;
+
+ wt_value &= ~PCI_GLI_9755_WT_EN;
+ wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_OFF);
+
+ pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value);
+}
+
+static void gl9755_disable_ssc_pll(struct pci_dev *pdev)
+{
+ u32 pll;
+
+ gl9755_wt_on(pdev);
+ pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
+ pll &= ~(PCI_GLI_9755_PLL_DIR | PCI_GLI_9755_PLLSSC_EN);
+ pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
+ gl9755_wt_off(pdev);
+}
+
+static void gl9755_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv)
+{
+ u32 pll;
+
+ gl9755_wt_on(pdev);
+ pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
+ pll &= ~(PCI_GLI_9755_PLL_LDIV |
+ PCI_GLI_9755_PLL_PDIV |
+ PCI_GLI_9755_PLL_DIR);
+ pll |= FIELD_PREP(PCI_GLI_9755_PLL_LDIV, ldiv) |
+ FIELD_PREP(PCI_GLI_9755_PLL_PDIV, pdiv) |
+ FIELD_PREP(PCI_GLI_9755_PLL_DIR, dir);
+ pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
+ gl9755_wt_off(pdev);
+
+ /* wait for pll stable */
+ mdelay(1);
+}
+
+static bool gl9755_ssc_enable(struct pci_dev *pdev)
+{
+ u32 misc;
+ u8 off;
+
+ gl9755_wt_on(pdev);
+ pci_read_config_dword(pdev, PCI_GLI_9755_MISC, &misc);
+ off = FIELD_GET(PCI_GLI_9755_MISC_SSC_OFF, misc);
+ gl9755_wt_off(pdev);
+
+ return !off;
+}
+
+static void gl9755_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm)
+{
+ u32 pll;
+ u32 ssc;
+
+ gl9755_wt_on(pdev);
+ pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll);
+ pci_read_config_dword(pdev, PCI_GLI_9755_PLLSSC, &ssc);
+ pll &= ~(PCI_GLI_9755_PLLSSC_STEP |
+ PCI_GLI_9755_PLLSSC_EN);
+ ssc &= ~PCI_GLI_9755_PLLSSC_PPM;
+ pll |= FIELD_PREP(PCI_GLI_9755_PLLSSC_STEP, step) |
+ FIELD_PREP(PCI_GLI_9755_PLLSSC_EN, enable);
+ ssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_PPM, ppm);
+ pci_write_config_dword(pdev, PCI_GLI_9755_PLLSSC, ssc);
+ pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll);
+ gl9755_wt_off(pdev);
+}
+
+static void gl9755_set_ssc_pll_205mhz(struct pci_dev *pdev)
+{
+ bool enable = gl9755_ssc_enable(pdev);
+
+ /* set pll to 205MHz and ssc */
+ gl9755_set_ssc(pdev, enable, 0xF, 0x5A1D);
+ gl9755_set_pll(pdev, 0x1, 0x246, 0x0);
+}
+
+static void gl9755_set_ssc_pll_100mhz(struct pci_dev *pdev)
+{
+ bool enable = gl9755_ssc_enable(pdev);
+
+ /* set pll to 100MHz and ssc */
+ gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
+ gl9755_set_pll(pdev, 0x1, 0x244, 0x1);
+}
+
+static void gl9755_set_ssc_pll_50mhz(struct pci_dev *pdev)
+{
+ bool enable = gl9755_ssc_enable(pdev);
+
+ /* set pll to 50MHz and ssc */
+ gl9755_set_ssc(pdev, enable, 0xE, 0x51EC);
+ gl9755_set_pll(pdev, 0x1, 0x244, 0x3);
+}
+
+static void sdhci_gl9755_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct sdhci_pci_slot *slot = sdhci_priv(host);
+ struct mmc_ios *ios = &host->mmc->ios;
+ struct pci_dev *pdev;
+ u16 clk;
+
+ pdev = slot->chip->pdev;
+ host->mmc->actual_clock = 0;
+
+ gl9755_disable_ssc_pll(pdev);
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+ if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) {
+ host->mmc->actual_clock = 205000000;
+ gl9755_set_ssc_pll_205mhz(pdev);
+ } else if (clock == 100000000) {
+ gl9755_set_ssc_pll_100mhz(pdev);
+ } else if (clock == 50000000) {
+ gl9755_set_ssc_pll_50mhz(pdev);
+ }
+
+ sdhci_enable_clk(host, clk);
+}
+
+static void gl9755_hw_setting(struct sdhci_pci_slot *slot)
+{
+ struct pci_dev *pdev = slot->chip->pdev;
+ u32 value;
+
+ gl9755_wt_on(pdev);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_PECONF, &value);
+ /*
+ * Apple ARM64 platforms using these chips may have
+ * inverted CD/WP detection.
+ */
+ if (of_property_read_bool(pdev->dev.of_node, "cd-inverted"))
+ value |= PCI_GLI_9755_INVERT_CD;
+ if (of_property_read_bool(pdev->dev.of_node, "wp-inverted"))
+ value |= PCI_GLI_9755_INVERT_WP;
+ value &= ~PCI_GLI_9755_LFCLK;
+ value &= ~PCI_GLI_9755_DMACLK;
+ pci_write_config_dword(pdev, PCI_GLI_9755_PECONF, value);
+
+ /* enable short circuit protection */
+ pci_read_config_dword(pdev, PCI_GLI_9755_SerDes, &value);
+ value &= ~PCI_GLI_9755_SCP_DIS;
+ pci_write_config_dword(pdev, PCI_GLI_9755_SerDes, value);
+
+ pci_read_config_dword(pdev, PCI_GLI_9755_CFG2, &value);
+ value &= ~PCI_GLI_9755_CFG2_L1DLY;
+ /* set ASPM L1 entry delay to 7.9us */
+ value |= FIELD_PREP(PCI_GLI_9755_CFG2_L1DLY,
+ GLI_9755_CFG2_L1DLY_VALUE);
+ pci_write_config_dword(pdev, PCI_GLI_9755_CFG2, value);
+
+ /* toggle PM state to allow GL9755 to enter ASPM L1.2 */
+ pci_read_config_dword(pdev, PCI_GLI_9755_PM_CTRL, &value);
+ value |= PCI_GLI_9755_PM_STATE;
+ pci_write_config_dword(pdev, PCI_GLI_9755_PM_CTRL, value);
+ value &= ~PCI_GLI_9755_PM_STATE;
+ pci_write_config_dword(pdev, PCI_GLI_9755_PM_CTRL, value);
+
+ /* mask the replay timer timeout of AER */
+ pci_read_config_dword(pdev, PCI_GLI_9755_CORRERR_MASK, &value);
+ value |= PCI_GLI_9755_CORRERR_MASK_REPLAY_TIMER_TIMEOUT;
+ pci_write_config_dword(pdev, PCI_GLI_9755_CORRERR_MASK, value);
+
+ gl9755_wt_off(pdev);
+}
+
+static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot)
+{
+ struct sdhci_host *host = slot->host;
+
+ gl9750_hw_setting(host);
+ gli_pcie_enable_msi(slot);
+ slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
+ sdhci_enable_v4_mode(host);
+
+ return 0;
+}
+
+static int gli_probe_slot_gl9755(struct sdhci_pci_slot *slot)
+{
+ struct sdhci_host *host = slot->host;
+
+ gl9755_hw_setting(slot);
+ gli_pcie_enable_msi(slot);
+ slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO;
+ sdhci_enable_v4_mode(host);
+
+ return 0;
+}
+
+static void sdhci_gli_voltage_switch(struct sdhci_host *host)
+{
+ /*
+ * According to Section 3.6.1 signal voltage switch procedure in
+ * SD Host Controller Simplified Spec. 4.20, steps 6~8 are as
+ * follows:
+ * (6) Set 1.8V Signal Enable in the Host Control 2 register.
+ * (7) Wait 5ms. 1.8V voltage regulator shall be stable within this
+ * period.
+ * (8) If 1.8V Signal Enable is cleared by Host Controller, go to
+ * step (12).
+ *
+ * Wait 5ms after set 1.8V signal enable in Host Control 2 register
+ * to ensure 1.8V signal enable bit is set by GL9750/GL9755.
+ *
+ * ...however, the controller in the NUC10i3FNK4 (a 9755) requires
+ * slightly longer than 5ms before the control register reports that
+ * 1.8V is ready, and far longer still before the card will actually
+ * work reliably.
+ */
+ usleep_range(100000, 110000);
+}
+
+static void sdhci_gl9750_reset(struct sdhci_host *host, u8 mask)
+{
+ sdhci_reset(host, mask);
+ gli_set_9750(host);
+}
+
+static u32 sdhci_gl9750_readl(struct sdhci_host *host, int reg)
+{
+ u32 value;
+
+ value = readl(host->ioaddr + reg);
+ if (unlikely(reg == SDHCI_MAX_CURRENT && !(value & 0xff)))
+ value |= 0xc8;
+
+ return value;
+}
+
+static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc,
+ struct mmc_ios *ios)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ u32 val;
+
+ val = sdhci_readl(host, SDHCI_GLI_9763E_HS400_ES_REG);
+ if (ios->enhanced_strobe)
+ val |= SDHCI_GLI_9763E_HS400_ES_BIT;
+ else
+ val &= ~SDHCI_GLI_9763E_HS400_ES_BIT;
+
+ sdhci_writel(host, val, SDHCI_GLI_9763E_HS400_ES_REG);
+}
+
+static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot,
+ bool enable)
+{
+ struct pci_dev *pdev = slot->chip->pdev;
+ u32 value;
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value);
+
+ if (enable)
+ value &= ~GLI_9763E_CFG_LPSN_DIS;
+ else
+ value |= GLI_9763E_CFG_LPSN_DIS;
+
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+}
+
+static void sdhci_set_gl9763e_signaling(struct sdhci_host *host,
+ unsigned int timing)
+{
+ u16 ctrl_2;
+
+ ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
+ ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
+ if (timing == MMC_TIMING_MMC_HS200)
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
+ else if (timing == MMC_TIMING_MMC_HS)
+ ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
+ else if (timing == MMC_TIMING_MMC_DDR52)
+ ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
+ else if (timing == MMC_TIMING_MMC_HS400)
+ ctrl_2 |= SDHCI_GLI_9763E_CTRL_HS400;
+
+ sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
+}
+
+static void sdhci_gl9763e_dumpregs(struct mmc_host *mmc)
+{
+ sdhci_dumpregs(mmc_priv(mmc));
+}
+
+static void sdhci_gl9763e_cqe_pre_enable(struct mmc_host *mmc)
+{
+ struct cqhci_host *cq_host = mmc->cqe_private;
+ u32 value;
+
+ value = cqhci_readl(cq_host, CQHCI_CFG);
+ value |= CQHCI_ENABLE;
+ cqhci_writel(cq_host, value, CQHCI_CFG);
+}
+
+static void sdhci_gl9763e_cqe_enable(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+
+ sdhci_writew(host, GLI_9763E_CQE_TRNS_MODE, SDHCI_TRANSFER_MODE);
+ sdhci_cqe_enable(mmc);
+}
+
+static u32 sdhci_gl9763e_cqhci_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_gl9763e_cqe_post_disable(struct mmc_host *mmc)
+{
+ struct sdhci_host *host = mmc_priv(mmc);
+ struct cqhci_host *cq_host = mmc->cqe_private;
+ u32 value;
+
+ value = cqhci_readl(cq_host, CQHCI_CFG);
+ value &= ~CQHCI_ENABLE;
+ cqhci_writel(cq_host, value, CQHCI_CFG);
+ sdhci_writew(host, 0x0, SDHCI_TRANSFER_MODE);
+}
+
+static const struct cqhci_host_ops sdhci_gl9763e_cqhci_ops = {
+ .enable = sdhci_gl9763e_cqe_enable,
+ .disable = sdhci_cqe_disable,
+ .dumpregs = sdhci_gl9763e_dumpregs,
+ .pre_enable = sdhci_gl9763e_cqe_pre_enable,
+ .post_disable = sdhci_gl9763e_cqe_post_disable,
+};
+
+static int gl9763e_add_host(struct sdhci_pci_slot *slot)
+{
+ struct device *dev = &slot->chip->pdev->dev;
+ struct sdhci_host *host = slot->host;
+ struct cqhci_host *cq_host;
+ bool dma64;
+ int ret;
+
+ ret = sdhci_setup_host(host);
+ if (ret)
+ return ret;
+
+ cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL);
+ if (!cq_host) {
+ ret = -ENOMEM;
+ goto cleanup;
+ }
+
+ cq_host->mmio = host->ioaddr + SDHCI_GLI_9763E_CQE_BASE_ADDR;
+ cq_host->ops = &sdhci_gl9763e_cqhci_ops;
+
+ dma64 = host->flags & SDHCI_USE_64_BIT_DMA;
+ if (dma64)
+ cq_host->caps |= CQHCI_TASK_DESC_SZ_128;
+
+ ret = cqhci_init(cq_host, host->mmc, dma64);
+ if (ret)
+ goto cleanup;
+
+ ret = __sdhci_add_host(host);
+ if (ret)
+ goto cleanup;
+
+ /* Disable LPM negotiation to avoid entering L1 state. */
+ gl9763e_set_low_power_negotiation(slot, false);
+
+ return 0;
+
+cleanup:
+ sdhci_cleanup_host(host);
+ return ret;
+}
+
+static void sdhci_gl9763e_reset(struct sdhci_host *host, u8 mask)
+{
+ if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL) &&
+ host->mmc->cqe_private)
+ cqhci_deactivate(host->mmc);
+ sdhci_reset(host, mask);
+}
+
+static void gli_set_gl9763e(struct sdhci_pci_slot *slot)
+{
+ struct pci_dev *pdev = slot->chip->pdev;
+ u32 value;
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_SCR, &value);
+ value |= GLI_9763E_SCR_AXI_REQ;
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, &value);
+ value &= ~GLI_9763E_HS400_SLOW;
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG2, &value);
+ value &= ~GLI_9763E_CFG2_L1DLY;
+ /* set ASPM L1 entry delay to 21us */
+ value |= FIELD_PREP(GLI_9763E_CFG2_L1DLY, GLI_9763E_CFG2_L1DLY_MID);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG2, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, &value);
+ value &= ~GLI_9763E_HS400_RXDLY;
+ value |= FIELD_PREP(GLI_9763E_HS400_RXDLY, GLI_9763E_HS400_RXDLY_5);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+}
+
+#ifdef CONFIG_PM
+static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip)
+{
+ struct sdhci_pci_slot *slot = chip->slots[0];
+ struct sdhci_host *host = slot->host;
+ u16 clock;
+
+ /* Enable LPM negotiation to allow entering L1 state */
+ gl9763e_set_low_power_negotiation(slot, true);
+
+ clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ clock &= ~(SDHCI_CLOCK_PLL_EN | SDHCI_CLOCK_CARD_EN);
+ sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
+
+ return 0;
+}
+
+static int gl9763e_runtime_resume(struct sdhci_pci_chip *chip)
+{
+ struct sdhci_pci_slot *slot = chip->slots[0];
+ struct sdhci_host *host = slot->host;
+ u16 clock;
+
+ if (host->mmc->ios.power_mode != MMC_POWER_ON)
+ return 0;
+
+ clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+
+ clock |= SDHCI_CLOCK_PLL_EN;
+ clock &= ~SDHCI_CLOCK_INT_STABLE;
+ sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
+
+ /* Wait max 150 ms */
+ if (read_poll_timeout(sdhci_readw, clock, (clock & SDHCI_CLOCK_INT_STABLE),
+ 1000, 150000, false, host, SDHCI_CLOCK_CONTROL)) {
+ pr_err("%s: PLL clock never stabilised.\n",
+ mmc_hostname(host->mmc));
+ sdhci_dumpregs(host);
+ }
+
+ clock |= SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL);
+
+ /* Disable LPM negotiation to avoid entering L1 state. */
+ gl9763e_set_low_power_negotiation(slot, false);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip)
+{
+ struct sdhci_pci_slot *slot = chip->slots[0];
+
+ pci_free_irq_vectors(slot->chip->pdev);
+ gli_pcie_enable_msi(slot);
+
+ return sdhci_pci_resume_host(chip);
+}
+
+static int gl9763e_resume(struct sdhci_pci_chip *chip)
+{
+ struct sdhci_pci_slot *slot = chip->slots[0];
+ int ret;
+
+ ret = sdhci_pci_gli_resume(chip);
+ if (ret)
+ return ret;
+
+ ret = cqhci_resume(slot->host->mmc);
+ if (ret)
+ return ret;
+
+ /*
+ * Disable LPM negotiation to bring device back in sync
+ * with its runtime_pm state.
+ */
+ gl9763e_set_low_power_negotiation(slot, false);
+
+ return 0;
+}
+
+static int gl9763e_suspend(struct sdhci_pci_chip *chip)
+{
+ struct sdhci_pci_slot *slot = chip->slots[0];
+ int ret;
+
+ /*
+ * Certain SoCs can suspend only with the bus in low-
+ * power state, notably x86 SoCs when using S0ix.
+ * Re-enable LPM negotiation to allow entering L1 state
+ * and entering system suspend.
+ */
+ gl9763e_set_low_power_negotiation(slot, true);
+
+ ret = cqhci_suspend(slot->host->mmc);
+ if (ret)
+ goto err_suspend;
+
+ ret = sdhci_suspend_host(slot->host);
+ if (ret)
+ goto err_suspend_host;
+
+ return 0;
+
+err_suspend_host:
+ cqhci_resume(slot->host->mmc);
+err_suspend:
+ gl9763e_set_low_power_negotiation(slot, false);
+ return ret;
+}
+#endif
+
+static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot)
+{
+ struct pci_dev *pdev = slot->chip->pdev;
+ struct sdhci_host *host = slot->host;
+ u32 value;
+
+ host->mmc->caps |= MMC_CAP_8_BIT_DATA |
+ MMC_CAP_1_8V_DDR |
+ MMC_CAP_NONREMOVABLE;
+ host->mmc->caps2 |= MMC_CAP2_HS200_1_8V_SDR |
+ MMC_CAP2_HS400_1_8V |
+ MMC_CAP2_HS400_ES |
+ MMC_CAP2_NO_SDIO |
+ MMC_CAP2_NO_SD;
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_MB, &value);
+ if (!(value & GLI_9763E_MB_CMDQ_OFF))
+ if (value & GLI_9763E_MB_ERP_ON)
+ host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
+
+ gli_pcie_enable_msi(slot);
+ host->mmc_host_ops.hs400_enhanced_strobe =
+ gl9763e_hs400_enhanced_strobe;
+ gli_set_gl9763e(slot);
+ sdhci_enable_v4_mode(host);
+
+ return 0;
+}
+
+#define REG_OFFSET_IN_BITS(reg) ((reg) << 3 & 0x18)
+
+static u16 sdhci_gli_readw(struct sdhci_host *host, int reg)
+{
+ u32 val = readl(host->ioaddr + (reg & ~3));
+ u16 word;
+
+ word = (val >> REG_OFFSET_IN_BITS(reg)) & 0xffff;
+ return word;
+}
+
+static u8 sdhci_gli_readb(struct sdhci_host *host, int reg)
+{
+ u32 val = readl(host->ioaddr + (reg & ~3));
+ u8 byte = (val >> REG_OFFSET_IN_BITS(reg)) & 0xff;
+
+ return byte;
+}
+
+static const struct sdhci_ops sdhci_gl9755_ops = {
+ .read_w = sdhci_gli_readw,
+ .read_b = sdhci_gli_readb,
+ .set_clock = sdhci_gl9755_set_clock,
+ .enable_dma = sdhci_pci_enable_dma,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+ .voltage_switch = sdhci_gli_voltage_switch,
+};
+
+const struct sdhci_pci_fixes sdhci_gl9755 = {
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_BROKEN_DDR50,
+ .probe_slot = gli_probe_slot_gl9755,
+ .ops = &sdhci_gl9755_ops,
+#ifdef CONFIG_PM_SLEEP
+ .resume = sdhci_pci_gli_resume,
+#endif
+};
+
+static const struct sdhci_ops sdhci_gl9750_ops = {
+ .read_w = sdhci_gli_readw,
+ .read_b = sdhci_gli_readb,
+ .read_l = sdhci_gl9750_readl,
+ .set_clock = sdhci_gl9750_set_clock,
+ .enable_dma = sdhci_pci_enable_dma,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_gl9750_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+ .voltage_switch = sdhci_gli_voltage_switch,
+ .platform_execute_tuning = gl9750_execute_tuning,
+};
+
+const struct sdhci_pci_fixes sdhci_gl9750 = {
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_BROKEN_DDR50,
+ .probe_slot = gli_probe_slot_gl9750,
+ .ops = &sdhci_gl9750_ops,
+#ifdef CONFIG_PM_SLEEP
+ .resume = sdhci_pci_gli_resume,
+#endif
+};
+
+static const struct sdhci_ops sdhci_gl9763e_ops = {
+ .set_clock = sdhci_set_clock,
+ .enable_dma = sdhci_pci_enable_dma,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_gl9763e_reset,
+ .set_uhs_signaling = sdhci_set_gl9763e_signaling,
+ .voltage_switch = sdhci_gli_voltage_switch,
+ .irq = sdhci_gl9763e_cqhci_irq,
+};
+
+const struct sdhci_pci_fixes sdhci_gl9763e = {
+ .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .probe_slot = gli_probe_slot_gl9763e,
+ .ops = &sdhci_gl9763e_ops,
+#ifdef CONFIG_PM_SLEEP
+ .resume = gl9763e_resume,
+ .suspend = gl9763e_suspend,
+#endif
+#ifdef CONFIG_PM
+ .runtime_suspend = gl9763e_runtime_suspend,
+ .runtime_resume = gl9763e_runtime_resume,
+ .allow_runtime_pm = true,
+#endif
+ .add_host = gl9763e_add_host,
+};