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@@ -102,212 +102,210 @@ struct exynos_pcie {
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#define PCIE_PHY_TRSV3_PD_TSV (0x1 << 7)
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#define PCIE_PHY_TRSV3_LVCC 0x31c
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-static void exynos_elb_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
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+static void exynos_elb_writel(struct exynos_pcie *ep, u32 val, u32 reg)
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{
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- writel(val, exynos_pcie->elbi_base + reg);
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+ writel(val, ep->elbi_base + reg);
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}
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-static u32 exynos_elb_readl(struct exynos_pcie *exynos_pcie, u32 reg)
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+static u32 exynos_elb_readl(struct exynos_pcie *ep, u32 reg)
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{
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- return readl(exynos_pcie->elbi_base + reg);
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+ return readl(ep->elbi_base + reg);
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}
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-static void exynos_phy_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
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+static void exynos_phy_writel(struct exynos_pcie *ep, u32 val, u32 reg)
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{
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- writel(val, exynos_pcie->phy_base + reg);
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+ writel(val, ep->phy_base + reg);
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}
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-static u32 exynos_phy_readl(struct exynos_pcie *exynos_pcie, u32 reg)
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+static u32 exynos_phy_readl(struct exynos_pcie *ep, u32 reg)
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{
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- return readl(exynos_pcie->phy_base + reg);
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+ return readl(ep->phy_base + reg);
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}
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-static void exynos_blk_writel(struct exynos_pcie *exynos_pcie, u32 val, u32 reg)
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+static void exynos_blk_writel(struct exynos_pcie *ep, u32 val, u32 reg)
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{
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- writel(val, exynos_pcie->block_base + reg);
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+ writel(val, ep->block_base + reg);
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}
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-static u32 exynos_blk_readl(struct exynos_pcie *exynos_pcie, u32 reg)
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+static u32 exynos_blk_readl(struct exynos_pcie *ep, u32 reg)
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{
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- return readl(exynos_pcie->block_base + reg);
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+ return readl(ep->block_base + reg);
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}
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-static void exynos_pcie_sideband_dbi_w_mode(struct exynos_pcie *exynos_pcie,
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- bool on)
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+static void exynos_pcie_sideband_dbi_w_mode(struct exynos_pcie *ep, bool on)
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{
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u32 val;
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if (on) {
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- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_AWMISC);
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+ val = exynos_elb_readl(ep, PCIE_ELBI_SLV_AWMISC);
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val |= PCIE_ELBI_SLV_DBI_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_AWMISC);
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+ exynos_elb_writel(ep, val, PCIE_ELBI_SLV_AWMISC);
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} else {
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- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_AWMISC);
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+ val = exynos_elb_readl(ep, PCIE_ELBI_SLV_AWMISC);
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val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_AWMISC);
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+ exynos_elb_writel(ep, val, PCIE_ELBI_SLV_AWMISC);
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}
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}
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-static void exynos_pcie_sideband_dbi_r_mode(struct exynos_pcie *exynos_pcie,
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- bool on)
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+static void exynos_pcie_sideband_dbi_r_mode(struct exynos_pcie *ep, bool on)
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{
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u32 val;
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if (on) {
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- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_ARMISC);
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+ val = exynos_elb_readl(ep, PCIE_ELBI_SLV_ARMISC);
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val |= PCIE_ELBI_SLV_DBI_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_ARMISC);
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+ exynos_elb_writel(ep, val, PCIE_ELBI_SLV_ARMISC);
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} else {
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- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_SLV_ARMISC);
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+ val = exynos_elb_readl(ep, PCIE_ELBI_SLV_ARMISC);
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val &= ~PCIE_ELBI_SLV_DBI_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_ELBI_SLV_ARMISC);
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+ exynos_elb_writel(ep, val, PCIE_ELBI_SLV_ARMISC);
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}
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}
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-static void exynos_pcie_assert_core_reset(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_assert_core_reset(struct exynos_pcie *ep)
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{
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u32 val;
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- val = exynos_elb_readl(exynos_pcie, PCIE_CORE_RESET);
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+ val = exynos_elb_readl(ep, PCIE_CORE_RESET);
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val &= ~PCIE_CORE_RESET_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_CORE_RESET);
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- exynos_elb_writel(exynos_pcie, 0, PCIE_PWR_RESET);
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- exynos_elb_writel(exynos_pcie, 0, PCIE_STICKY_RESET);
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- exynos_elb_writel(exynos_pcie, 0, PCIE_NONSTICKY_RESET);
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+ exynos_elb_writel(ep, val, PCIE_CORE_RESET);
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+ exynos_elb_writel(ep, 0, PCIE_PWR_RESET);
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+ exynos_elb_writel(ep, 0, PCIE_STICKY_RESET);
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+ exynos_elb_writel(ep, 0, PCIE_NONSTICKY_RESET);
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}
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-static void exynos_pcie_deassert_core_reset(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_deassert_core_reset(struct exynos_pcie *ep)
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{
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u32 val;
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- val = exynos_elb_readl(exynos_pcie, PCIE_CORE_RESET);
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+ val = exynos_elb_readl(ep, PCIE_CORE_RESET);
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val |= PCIE_CORE_RESET_ENABLE;
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- exynos_elb_writel(exynos_pcie, val, PCIE_CORE_RESET);
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- exynos_elb_writel(exynos_pcie, 1, PCIE_STICKY_RESET);
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- exynos_elb_writel(exynos_pcie, 1, PCIE_NONSTICKY_RESET);
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- exynos_elb_writel(exynos_pcie, 1, PCIE_APP_INIT_RESET);
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- exynos_elb_writel(exynos_pcie, 0, PCIE_APP_INIT_RESET);
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- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_MAC_RESET);
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+ exynos_elb_writel(ep, val, PCIE_CORE_RESET);
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+ exynos_elb_writel(ep, 1, PCIE_STICKY_RESET);
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+ exynos_elb_writel(ep, 1, PCIE_NONSTICKY_RESET);
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+ exynos_elb_writel(ep, 1, PCIE_APP_INIT_RESET);
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+ exynos_elb_writel(ep, 0, PCIE_APP_INIT_RESET);
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+ exynos_blk_writel(ep, 1, PCIE_PHY_MAC_RESET);
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}
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-static void exynos_pcie_assert_phy_reset(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_assert_phy_reset(struct exynos_pcie *ep)
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{
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_MAC_RESET);
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- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_GLOBAL_RESET);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_MAC_RESET);
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+ exynos_blk_writel(ep, 1, PCIE_PHY_GLOBAL_RESET);
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}
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-static void exynos_pcie_deassert_phy_reset(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_deassert_phy_reset(struct exynos_pcie *ep)
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{
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_GLOBAL_RESET);
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- exynos_elb_writel(exynos_pcie, 1, PCIE_PWR_RESET);
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_COMMON_RESET);
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_CMN_REG);
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_TRSVREG_RESET);
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- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_TRSV_RESET);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_GLOBAL_RESET);
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+ exynos_elb_writel(ep, 1, PCIE_PWR_RESET);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_COMMON_RESET);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_CMN_REG);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_TRSVREG_RESET);
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+ exynos_blk_writel(ep, 0, PCIE_PHY_TRSV_RESET);
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}
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-static void exynos_pcie_power_on_phy(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_power_on_phy(struct exynos_pcie *ep)
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{
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u32 val;
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_COMMON_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_COMMON_POWER);
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val &= ~PCIE_PHY_COMMON_PD_CMN;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_COMMON_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_COMMON_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV0_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV0_POWER);
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val &= ~PCIE_PHY_TRSV0_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV0_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV0_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV1_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV1_POWER);
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val &= ~PCIE_PHY_TRSV1_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV1_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV1_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV2_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV2_POWER);
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val &= ~PCIE_PHY_TRSV2_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV2_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV2_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV3_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV3_POWER);
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val &= ~PCIE_PHY_TRSV3_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV3_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV3_POWER);
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}
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-static void exynos_pcie_power_off_phy(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_power_off_phy(struct exynos_pcie *ep)
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{
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u32 val;
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_COMMON_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_COMMON_POWER);
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val |= PCIE_PHY_COMMON_PD_CMN;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_COMMON_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_COMMON_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV0_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV0_POWER);
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val |= PCIE_PHY_TRSV0_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV0_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV0_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV1_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV1_POWER);
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val |= PCIE_PHY_TRSV1_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV1_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV1_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV2_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV2_POWER);
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val |= PCIE_PHY_TRSV2_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV2_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV2_POWER);
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- val = exynos_phy_readl(exynos_pcie, PCIE_PHY_TRSV3_POWER);
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+ val = exynos_phy_readl(ep, PCIE_PHY_TRSV3_POWER);
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val |= PCIE_PHY_TRSV3_PD_TSV;
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- exynos_phy_writel(exynos_pcie, val, PCIE_PHY_TRSV3_POWER);
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+ exynos_phy_writel(ep, val, PCIE_PHY_TRSV3_POWER);
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}
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-static void exynos_pcie_init_phy(struct exynos_pcie *exynos_pcie)
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+static void exynos_pcie_init_phy(struct exynos_pcie *ep)
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{
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/* DCC feedback control off */
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- exynos_phy_writel(exynos_pcie, 0x29, PCIE_PHY_DCC_FEEDBACK);
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+ exynos_phy_writel(ep, 0x29, PCIE_PHY_DCC_FEEDBACK);
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/* set TX/RX impedance */
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- exynos_phy_writel(exynos_pcie, 0xd5, PCIE_PHY_IMPEDANCE);
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+ exynos_phy_writel(ep, 0xd5, PCIE_PHY_IMPEDANCE);
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/* set 50Mhz PHY clock */
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- exynos_phy_writel(exynos_pcie, 0x14, PCIE_PHY_PLL_DIV_0);
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- exynos_phy_writel(exynos_pcie, 0x12, PCIE_PHY_PLL_DIV_1);
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+ exynos_phy_writel(ep, 0x14, PCIE_PHY_PLL_DIV_0);
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+ exynos_phy_writel(ep, 0x12, PCIE_PHY_PLL_DIV_1);
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/* set TX Differential output for lane 0 */
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- exynos_phy_writel(exynos_pcie, 0x7f, PCIE_PHY_TRSV0_DRV_LVL);
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+ exynos_phy_writel(ep, 0x7f, PCIE_PHY_TRSV0_DRV_LVL);
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/* set TX Pre-emphasis Level Control for lane 0 to minimum */
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- exynos_phy_writel(exynos_pcie, 0x0, PCIE_PHY_TRSV0_EMP_LVL);
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+ exynos_phy_writel(ep, 0x0, PCIE_PHY_TRSV0_EMP_LVL);
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/* set RX clock and data recovery bandwidth */
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- exynos_phy_writel(exynos_pcie, 0xe7, PCIE_PHY_PLL_BIAS);
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- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV0_RXCDR);
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- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV1_RXCDR);
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- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV2_RXCDR);
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- exynos_phy_writel(exynos_pcie, 0x82, PCIE_PHY_TRSV3_RXCDR);
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+ exynos_phy_writel(ep, 0xe7, PCIE_PHY_PLL_BIAS);
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+ exynos_phy_writel(ep, 0x82, PCIE_PHY_TRSV0_RXCDR);
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+ exynos_phy_writel(ep, 0x82, PCIE_PHY_TRSV1_RXCDR);
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+ exynos_phy_writel(ep, 0x82, PCIE_PHY_TRSV2_RXCDR);
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+ exynos_phy_writel(ep, 0x82, PCIE_PHY_TRSV3_RXCDR);
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/* change TX Pre-emphasis Level Control for lanes */
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- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV0_EMP_LVL);
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- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV1_EMP_LVL);
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- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV2_EMP_LVL);
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- exynos_phy_writel(exynos_pcie, 0x39, PCIE_PHY_TRSV3_EMP_LVL);
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+ exynos_phy_writel(ep, 0x39, PCIE_PHY_TRSV0_EMP_LVL);
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+ exynos_phy_writel(ep, 0x39, PCIE_PHY_TRSV1_EMP_LVL);
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+ exynos_phy_writel(ep, 0x39, PCIE_PHY_TRSV2_EMP_LVL);
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+ exynos_phy_writel(ep, 0x39, PCIE_PHY_TRSV3_EMP_LVL);
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/* set LVCC */
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- exynos_phy_writel(exynos_pcie, 0x20, PCIE_PHY_TRSV0_LVCC);
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- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV1_LVCC);
|
|
|
- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV2_LVCC);
|
|
|
- exynos_phy_writel(exynos_pcie, 0xa0, PCIE_PHY_TRSV3_LVCC);
|
|
|
+ exynos_phy_writel(ep, 0x20, PCIE_PHY_TRSV0_LVCC);
|
|
|
+ exynos_phy_writel(ep, 0xa0, PCIE_PHY_TRSV1_LVCC);
|
|
|
+ exynos_phy_writel(ep, 0xa0, PCIE_PHY_TRSV2_LVCC);
|
|
|
+ exynos_phy_writel(ep, 0xa0, PCIE_PHY_TRSV3_LVCC);
|
|
|
}
|
|
|
|
|
|
-static void exynos_pcie_assert_reset(struct exynos_pcie *exynos_pcie)
|
|
|
+static void exynos_pcie_assert_reset(struct exynos_pcie *ep)
|
|
|
{
|
|
|
- struct pcie_port *pp = &exynos_pcie->pp;
|
|
|
+ struct pcie_port *pp = &ep->pp;
|
|
|
struct device *dev = pp->dev;
|
|
|
|
|
|
- if (exynos_pcie->reset_gpio >= 0)
|
|
|
- devm_gpio_request_one(dev, exynos_pcie->reset_gpio,
|
|
|
+ if (ep->reset_gpio >= 0)
|
|
|
+ devm_gpio_request_one(dev, ep->reset_gpio,
|
|
|
GPIOF_OUT_INIT_HIGH, "RESET");
|
|
|
}
|
|
|
|
|
|
-static int exynos_pcie_establish_link(struct exynos_pcie *exynos_pcie)
|
|
|
+static int exynos_pcie_establish_link(struct exynos_pcie *ep)
|
|
|
{
|
|
|
- struct pcie_port *pp = &exynos_pcie->pp;
|
|
|
+ struct pcie_port *pp = &ep->pp;
|
|
|
struct device *dev = pp->dev;
|
|
|
u32 val;
|
|
|
|
|
@@ -316,142 +314,142 @@ static int exynos_pcie_establish_link(struct exynos_pcie *exynos_pcie)
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
|
- exynos_pcie_assert_core_reset(exynos_pcie);
|
|
|
- exynos_pcie_assert_phy_reset(exynos_pcie);
|
|
|
- exynos_pcie_deassert_phy_reset(exynos_pcie);
|
|
|
- exynos_pcie_power_on_phy(exynos_pcie);
|
|
|
- exynos_pcie_init_phy(exynos_pcie);
|
|
|
+ exynos_pcie_assert_core_reset(ep);
|
|
|
+ exynos_pcie_assert_phy_reset(ep);
|
|
|
+ exynos_pcie_deassert_phy_reset(ep);
|
|
|
+ exynos_pcie_power_on_phy(ep);
|
|
|
+ exynos_pcie_init_phy(ep);
|
|
|
|
|
|
/* pulse for common reset */
|
|
|
- exynos_blk_writel(exynos_pcie, 1, PCIE_PHY_COMMON_RESET);
|
|
|
+ exynos_blk_writel(ep, 1, PCIE_PHY_COMMON_RESET);
|
|
|
udelay(500);
|
|
|
- exynos_blk_writel(exynos_pcie, 0, PCIE_PHY_COMMON_RESET);
|
|
|
+ exynos_blk_writel(ep, 0, PCIE_PHY_COMMON_RESET);
|
|
|
|
|
|
- exynos_pcie_deassert_core_reset(exynos_pcie);
|
|
|
+ exynos_pcie_deassert_core_reset(ep);
|
|
|
dw_pcie_setup_rc(pp);
|
|
|
- exynos_pcie_assert_reset(exynos_pcie);
|
|
|
+ exynos_pcie_assert_reset(ep);
|
|
|
|
|
|
/* assert LTSSM enable */
|
|
|
- exynos_elb_writel(exynos_pcie, PCIE_ELBI_LTSSM_ENABLE,
|
|
|
+ exynos_elb_writel(ep, PCIE_ELBI_LTSSM_ENABLE,
|
|
|
PCIE_APP_LTSSM_ENABLE);
|
|
|
|
|
|
/* check if the link is up or not */
|
|
|
if (!dw_pcie_wait_for_link(pp))
|
|
|
return 0;
|
|
|
|
|
|
- while (exynos_phy_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED) == 0) {
|
|
|
- val = exynos_blk_readl(exynos_pcie, PCIE_PHY_PLL_LOCKED);
|
|
|
+ while (exynos_phy_readl(ep, PCIE_PHY_PLL_LOCKED) == 0) {
|
|
|
+ val = exynos_blk_readl(ep, PCIE_PHY_PLL_LOCKED);
|
|
|
dev_info(dev, "PLL Locked: 0x%x\n", val);
|
|
|
}
|
|
|
- exynos_pcie_power_off_phy(exynos_pcie);
|
|
|
+ exynos_pcie_power_off_phy(ep);
|
|
|
return -ETIMEDOUT;
|
|
|
}
|
|
|
|
|
|
-static void exynos_pcie_clear_irq_pulse(struct exynos_pcie *exynos_pcie)
|
|
|
+static void exynos_pcie_clear_irq_pulse(struct exynos_pcie *ep)
|
|
|
{
|
|
|
u32 val;
|
|
|
|
|
|
- val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_PULSE);
|
|
|
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_PULSE);
|
|
|
+ val = exynos_elb_readl(ep, PCIE_IRQ_PULSE);
|
|
|
+ exynos_elb_writel(ep, val, PCIE_IRQ_PULSE);
|
|
|
}
|
|
|
|
|
|
-static void exynos_pcie_enable_irq_pulse(struct exynos_pcie *exynos_pcie)
|
|
|
+static void exynos_pcie_enable_irq_pulse(struct exynos_pcie *ep)
|
|
|
{
|
|
|
u32 val;
|
|
|
|
|
|
/* enable INTX interrupt */
|
|
|
val = IRQ_INTA_ASSERT | IRQ_INTB_ASSERT |
|
|
|
IRQ_INTC_ASSERT | IRQ_INTD_ASSERT;
|
|
|
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_PULSE);
|
|
|
+ exynos_elb_writel(ep, val, PCIE_IRQ_EN_PULSE);
|
|
|
}
|
|
|
|
|
|
static irqreturn_t exynos_pcie_irq_handler(int irq, void *arg)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = arg;
|
|
|
+ struct exynos_pcie *ep = arg;
|
|
|
|
|
|
- exynos_pcie_clear_irq_pulse(exynos_pcie);
|
|
|
+ exynos_pcie_clear_irq_pulse(ep);
|
|
|
return IRQ_HANDLED;
|
|
|
}
|
|
|
|
|
|
static irqreturn_t exynos_pcie_msi_irq_handler(int irq, void *arg)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = arg;
|
|
|
- struct pcie_port *pp = &exynos_pcie->pp;
|
|
|
+ struct exynos_pcie *ep = arg;
|
|
|
+ struct pcie_port *pp = &ep->pp;
|
|
|
|
|
|
return dw_handle_msi_irq(pp);
|
|
|
}
|
|
|
|
|
|
-static void exynos_pcie_msi_init(struct exynos_pcie *exynos_pcie)
|
|
|
+static void exynos_pcie_msi_init(struct exynos_pcie *ep)
|
|
|
{
|
|
|
- struct pcie_port *pp = &exynos_pcie->pp;
|
|
|
+ struct pcie_port *pp = &ep->pp;
|
|
|
u32 val;
|
|
|
|
|
|
dw_pcie_msi_init(pp);
|
|
|
|
|
|
/* enable MSI interrupt */
|
|
|
- val = exynos_elb_readl(exynos_pcie, PCIE_IRQ_EN_LEVEL);
|
|
|
+ val = exynos_elb_readl(ep, PCIE_IRQ_EN_LEVEL);
|
|
|
val |= IRQ_MSI_ENABLE;
|
|
|
- exynos_elb_writel(exynos_pcie, val, PCIE_IRQ_EN_LEVEL);
|
|
|
+ exynos_elb_writel(ep, val, PCIE_IRQ_EN_LEVEL);
|
|
|
}
|
|
|
|
|
|
-static void exynos_pcie_enable_interrupts(struct exynos_pcie *exynos_pcie)
|
|
|
+static void exynos_pcie_enable_interrupts(struct exynos_pcie *ep)
|
|
|
{
|
|
|
- exynos_pcie_enable_irq_pulse(exynos_pcie);
|
|
|
+ exynos_pcie_enable_irq_pulse(ep);
|
|
|
|
|
|
if (IS_ENABLED(CONFIG_PCI_MSI))
|
|
|
- exynos_pcie_msi_init(exynos_pcie);
|
|
|
+ exynos_pcie_msi_init(ep);
|
|
|
}
|
|
|
|
|
|
static u32 exynos_pcie_readl_rc(struct pcie_port *pp, u32 reg)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
u32 val;
|
|
|
|
|
|
- exynos_pcie_sideband_dbi_r_mode(exynos_pcie, true);
|
|
|
+ exynos_pcie_sideband_dbi_r_mode(ep, true);
|
|
|
val = readl(pp->dbi_base + reg);
|
|
|
- exynos_pcie_sideband_dbi_r_mode(exynos_pcie, false);
|
|
|
+ exynos_pcie_sideband_dbi_r_mode(ep, false);
|
|
|
return val;
|
|
|
}
|
|
|
|
|
|
static void exynos_pcie_writel_rc(struct pcie_port *pp, u32 reg, u32 val)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
|
|
|
- exynos_pcie_sideband_dbi_w_mode(exynos_pcie, true);
|
|
|
+ exynos_pcie_sideband_dbi_w_mode(ep, true);
|
|
|
writel(val, pp->dbi_base + reg);
|
|
|
- exynos_pcie_sideband_dbi_w_mode(exynos_pcie, false);
|
|
|
+ exynos_pcie_sideband_dbi_w_mode(ep, false);
|
|
|
}
|
|
|
|
|
|
static int exynos_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
|
|
|
u32 *val)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
int ret;
|
|
|
|
|
|
- exynos_pcie_sideband_dbi_r_mode(exynos_pcie, true);
|
|
|
+ exynos_pcie_sideband_dbi_r_mode(ep, true);
|
|
|
ret = dw_pcie_cfg_read(pp->dbi_base + where, size, val);
|
|
|
- exynos_pcie_sideband_dbi_r_mode(exynos_pcie, false);
|
|
|
+ exynos_pcie_sideband_dbi_r_mode(ep, false);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
static int exynos_pcie_wr_own_conf(struct pcie_port *pp, int where, int size,
|
|
|
u32 val)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
int ret;
|
|
|
|
|
|
- exynos_pcie_sideband_dbi_w_mode(exynos_pcie, true);
|
|
|
+ exynos_pcie_sideband_dbi_w_mode(ep, true);
|
|
|
ret = dw_pcie_cfg_write(pp->dbi_base + where, size, val);
|
|
|
- exynos_pcie_sideband_dbi_w_mode(exynos_pcie, false);
|
|
|
+ exynos_pcie_sideband_dbi_w_mode(ep, false);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
static int exynos_pcie_link_up(struct pcie_port *pp)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
u32 val;
|
|
|
|
|
|
- val = exynos_elb_readl(exynos_pcie, PCIE_ELBI_RDLH_LINKUP);
|
|
|
+ val = exynos_elb_readl(ep, PCIE_ELBI_RDLH_LINKUP);
|
|
|
if (val == PCIE_ELBI_LTSSM_ENABLE)
|
|
|
return 1;
|
|
|
|
|
@@ -460,10 +458,10 @@ static int exynos_pcie_link_up(struct pcie_port *pp)
|
|
|
|
|
|
static void exynos_pcie_host_init(struct pcie_port *pp)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = to_exynos_pcie(pp);
|
|
|
+ struct exynos_pcie *ep = to_exynos_pcie(pp);
|
|
|
|
|
|
- exynos_pcie_establish_link(exynos_pcie);
|
|
|
- exynos_pcie_enable_interrupts(exynos_pcie);
|
|
|
+ exynos_pcie_establish_link(ep);
|
|
|
+ exynos_pcie_enable_interrupts(ep);
|
|
|
}
|
|
|
|
|
|
static struct pcie_host_ops exynos_pcie_host_ops = {
|
|
@@ -475,10 +473,10 @@ static struct pcie_host_ops exynos_pcie_host_ops = {
|
|
|
.host_init = exynos_pcie_host_init,
|
|
|
};
|
|
|
|
|
|
-static int __init exynos_add_pcie_port(struct exynos_pcie *exynos_pcie,
|
|
|
+static int __init exynos_add_pcie_port(struct exynos_pcie *ep,
|
|
|
struct platform_device *pdev)
|
|
|
{
|
|
|
- struct pcie_port *pp = &exynos_pcie->pp;
|
|
|
+ struct pcie_port *pp = &ep->pp;
|
|
|
struct device *dev = pp->dev;
|
|
|
int ret;
|
|
|
|
|
@@ -488,7 +486,7 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *exynos_pcie,
|
|
|
return -ENODEV;
|
|
|
}
|
|
|
ret = devm_request_irq(dev, pp->irq, exynos_pcie_irq_handler,
|
|
|
- IRQF_SHARED, "exynos-pcie", exynos_pcie);
|
|
|
+ IRQF_SHARED, "exynos-pcie", ep);
|
|
|
if (ret) {
|
|
|
dev_err(dev, "failed to request irq\n");
|
|
|
return ret;
|
|
@@ -504,7 +502,7 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *exynos_pcie,
|
|
|
ret = devm_request_irq(dev, pp->msi_irq,
|
|
|
exynos_pcie_msi_irq_handler,
|
|
|
IRQF_SHARED | IRQF_NO_THREAD,
|
|
|
- "exynos-pcie", exynos_pcie);
|
|
|
+ "exynos-pcie", ep);
|
|
|
if (ret) {
|
|
|
dev_err(dev, "failed to request msi irq\n");
|
|
|
return ret;
|
|
@@ -526,7 +524,7 @@ static int __init exynos_add_pcie_port(struct exynos_pcie *exynos_pcie,
|
|
|
static int __init exynos_pcie_probe(struct platform_device *pdev)
|
|
|
{
|
|
|
struct device *dev = &pdev->dev;
|
|
|
- struct exynos_pcie *exynos_pcie;
|
|
|
+ struct exynos_pcie *ep;
|
|
|
struct pcie_port *pp;
|
|
|
struct device_node *np = dev->of_node;
|
|
|
struct resource *elbi_base;
|
|
@@ -534,75 +532,75 @@ static int __init exynos_pcie_probe(struct platform_device *pdev)
|
|
|
struct resource *block_base;
|
|
|
int ret;
|
|
|
|
|
|
- exynos_pcie = devm_kzalloc(dev, sizeof(*exynos_pcie), GFP_KERNEL);
|
|
|
- if (!exynos_pcie)
|
|
|
+ ep = devm_kzalloc(dev, sizeof(*ep), GFP_KERNEL);
|
|
|
+ if (!ep)
|
|
|
return -ENOMEM;
|
|
|
|
|
|
- pp = &exynos_pcie->pp;
|
|
|
+ pp = &ep->pp;
|
|
|
pp->dev = dev;
|
|
|
|
|
|
- exynos_pcie->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
|
|
|
+ ep->reset_gpio = of_get_named_gpio(np, "reset-gpio", 0);
|
|
|
|
|
|
- exynos_pcie->clk = devm_clk_get(dev, "pcie");
|
|
|
- if (IS_ERR(exynos_pcie->clk)) {
|
|
|
+ ep->clk = devm_clk_get(dev, "pcie");
|
|
|
+ if (IS_ERR(ep->clk)) {
|
|
|
dev_err(dev, "Failed to get pcie rc clock\n");
|
|
|
- return PTR_ERR(exynos_pcie->clk);
|
|
|
+ return PTR_ERR(ep->clk);
|
|
|
}
|
|
|
- ret = clk_prepare_enable(exynos_pcie->clk);
|
|
|
+ ret = clk_prepare_enable(ep->clk);
|
|
|
if (ret)
|
|
|
return ret;
|
|
|
|
|
|
- exynos_pcie->bus_clk = devm_clk_get(dev, "pcie_bus");
|
|
|
- if (IS_ERR(exynos_pcie->bus_clk)) {
|
|
|
+ ep->bus_clk = devm_clk_get(dev, "pcie_bus");
|
|
|
+ if (IS_ERR(ep->bus_clk)) {
|
|
|
dev_err(dev, "Failed to get pcie bus clock\n");
|
|
|
- ret = PTR_ERR(exynos_pcie->bus_clk);
|
|
|
+ ret = PTR_ERR(ep->bus_clk);
|
|
|
goto fail_clk;
|
|
|
}
|
|
|
- ret = clk_prepare_enable(exynos_pcie->bus_clk);
|
|
|
+ ret = clk_prepare_enable(ep->bus_clk);
|
|
|
if (ret)
|
|
|
goto fail_clk;
|
|
|
|
|
|
elbi_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
- exynos_pcie->elbi_base = devm_ioremap_resource(dev, elbi_base);
|
|
|
- if (IS_ERR(exynos_pcie->elbi_base)) {
|
|
|
- ret = PTR_ERR(exynos_pcie->elbi_base);
|
|
|
+ ep->elbi_base = devm_ioremap_resource(dev, elbi_base);
|
|
|
+ if (IS_ERR(ep->elbi_base)) {
|
|
|
+ ret = PTR_ERR(ep->elbi_base);
|
|
|
goto fail_bus_clk;
|
|
|
}
|
|
|
|
|
|
phy_base = platform_get_resource(pdev, IORESOURCE_MEM, 1);
|
|
|
- exynos_pcie->phy_base = devm_ioremap_resource(dev, phy_base);
|
|
|
- if (IS_ERR(exynos_pcie->phy_base)) {
|
|
|
- ret = PTR_ERR(exynos_pcie->phy_base);
|
|
|
+ ep->phy_base = devm_ioremap_resource(dev, phy_base);
|
|
|
+ if (IS_ERR(ep->phy_base)) {
|
|
|
+ ret = PTR_ERR(ep->phy_base);
|
|
|
goto fail_bus_clk;
|
|
|
}
|
|
|
|
|
|
block_base = platform_get_resource(pdev, IORESOURCE_MEM, 2);
|
|
|
- exynos_pcie->block_base = devm_ioremap_resource(dev, block_base);
|
|
|
- if (IS_ERR(exynos_pcie->block_base)) {
|
|
|
- ret = PTR_ERR(exynos_pcie->block_base);
|
|
|
+ ep->block_base = devm_ioremap_resource(dev, block_base);
|
|
|
+ if (IS_ERR(ep->block_base)) {
|
|
|
+ ret = PTR_ERR(ep->block_base);
|
|
|
goto fail_bus_clk;
|
|
|
}
|
|
|
|
|
|
- ret = exynos_add_pcie_port(exynos_pcie, pdev);
|
|
|
+ ret = exynos_add_pcie_port(ep, pdev);
|
|
|
if (ret < 0)
|
|
|
goto fail_bus_clk;
|
|
|
|
|
|
- platform_set_drvdata(pdev, exynos_pcie);
|
|
|
+ platform_set_drvdata(pdev, ep);
|
|
|
return 0;
|
|
|
|
|
|
fail_bus_clk:
|
|
|
- clk_disable_unprepare(exynos_pcie->bus_clk);
|
|
|
+ clk_disable_unprepare(ep->bus_clk);
|
|
|
fail_clk:
|
|
|
- clk_disable_unprepare(exynos_pcie->clk);
|
|
|
+ clk_disable_unprepare(ep->clk);
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
static int __exit exynos_pcie_remove(struct platform_device *pdev)
|
|
|
{
|
|
|
- struct exynos_pcie *exynos_pcie = platform_get_drvdata(pdev);
|
|
|
+ struct exynos_pcie *ep = platform_get_drvdata(pdev);
|
|
|
|
|
|
- clk_disable_unprepare(exynos_pcie->bus_clk);
|
|
|
- clk_disable_unprepare(exynos_pcie->clk);
|
|
|
+ clk_disable_unprepare(ep->bus_clk);
|
|
|
+ clk_disable_unprepare(ep->clk);
|
|
|
|
|
|
return 0;
|
|
|
}
|