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-rw-r--r--drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c254
1 files changed, 254 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c
new file mode 100644
index 000000000..d04758396
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Jie Qiu <jie.qiu@mediatek.com>
+ */
+
+#include "phy-mtk-hdmi.h"
+#include "phy-mtk-io.h"
+
+#define HDMI_CON0 0x00
+#define RG_HDMITX_PLL_EN BIT(31)
+#define RG_HDMITX_PLL_FBKDIV GENMASK(30, 24)
+#define RG_HDMITX_PLL_FBKSEL GENMASK(23, 22)
+#define RG_HDMITX_PLL_PREDIV GENMASK(21, 20)
+#define RG_HDMITX_PLL_POSDIV GENMASK(19, 18)
+#define RG_HDMITX_PLL_RST_DLY GENMASK(17, 16)
+#define RG_HDMITX_PLL_IR GENMASK(15, 12)
+#define RG_HDMITX_PLL_IC GENMASK(11, 8)
+#define RG_HDMITX_PLL_BP GENMASK(7, 4)
+#define RG_HDMITX_PLL_BR GENMASK(3, 2)
+#define RG_HDMITX_PLL_BC GENMASK(1, 0)
+#define HDMI_CON1 0x04
+#define RG_HDMITX_PLL_DIVEN GENMASK(31, 29)
+#define RG_HDMITX_PLL_AUTOK_EN BIT(28)
+#define RG_HDMITX_PLL_AUTOK_KF GENMASK(27, 26)
+#define RG_HDMITX_PLL_AUTOK_KS GENMASK(25, 24)
+#define RG_HDMITX_PLL_AUTOK_LOAD BIT(23)
+#define RG_HDMITX_PLL_BAND GENMASK(21, 16)
+#define RG_HDMITX_PLL_REF_SEL BIT(15)
+#define RG_HDMITX_PLL_BIAS_EN BIT(14)
+#define RG_HDMITX_PLL_BIAS_LPF_EN BIT(13)
+#define RG_HDMITX_PLL_TXDIV_EN BIT(12)
+#define RG_HDMITX_PLL_TXDIV GENMASK(11, 10)
+#define RG_HDMITX_PLL_LVROD_EN BIT(9)
+#define RG_HDMITX_PLL_MONVC_EN BIT(8)
+#define RG_HDMITX_PLL_MONCK_EN BIT(7)
+#define RG_HDMITX_PLL_MONREF_EN BIT(6)
+#define RG_HDMITX_PLL_TST_EN BIT(5)
+#define RG_HDMITX_PLL_TST_CK_EN BIT(4)
+#define RG_HDMITX_PLL_TST_SEL GENMASK(3, 0)
+#define HDMI_CON2 0x08
+#define RGS_HDMITX_PLL_AUTOK_BAND GENMASK(14, 8)
+#define RGS_HDMITX_PLL_AUTOK_FAIL BIT(1)
+#define RG_HDMITX_EN_TX_CKLDO BIT(0)
+#define HDMI_CON3 0x0c
+#define RG_HDMITX_SER_EN GENMASK(31, 28)
+#define RG_HDMITX_PRD_EN GENMASK(27, 24)
+#define RG_HDMITX_PRD_IMP_EN GENMASK(23, 20)
+#define RG_HDMITX_DRV_EN GENMASK(19, 16)
+#define RG_HDMITX_DRV_IMP_EN GENMASK(15, 12)
+#define RG_HDMITX_MHLCK_FORCE BIT(10)
+#define RG_HDMITX_MHLCK_PPIX_EN BIT(9)
+#define RG_HDMITX_MHLCK_EN BIT(8)
+#define RG_HDMITX_SER_DIN_SEL GENMASK(7, 4)
+#define RG_HDMITX_SER_5T1_BIST_EN BIT(3)
+#define RG_HDMITX_SER_BIST_TOG BIT(2)
+#define RG_HDMITX_SER_DIN_TOG BIT(1)
+#define RG_HDMITX_SER_CLKDIG_INV BIT(0)
+#define HDMI_CON4 0x10
+#define RG_HDMITX_PRD_IBIAS_CLK GENMASK(27, 24)
+#define RG_HDMITX_PRD_IBIAS_D2 GENMASK(19, 16)
+#define RG_HDMITX_PRD_IBIAS_D1 GENMASK(11, 8)
+#define RG_HDMITX_PRD_IBIAS_D0 GENMASK(3, 0)
+#define HDMI_CON5 0x14
+#define RG_HDMITX_DRV_IBIAS_CLK GENMASK(29, 24)
+#define RG_HDMITX_DRV_IBIAS_D2 GENMASK(21, 16)
+#define RG_HDMITX_DRV_IBIAS_D1 GENMASK(13, 8)
+#define RG_HDMITX_DRV_IBIAS_D0 GENMASK(5, 0)
+#define HDMI_CON6 0x18
+#define RG_HDMITX_DRV_IMP_CLK GENMASK(29, 24)
+#define RG_HDMITX_DRV_IMP_D2 GENMASK(21, 16)
+#define RG_HDMITX_DRV_IMP_D1 GENMASK(13, 8)
+#define RG_HDMITX_DRV_IMP_D0 GENMASK(5, 0)
+#define HDMI_CON7 0x1c
+#define RG_HDMITX_MHLCK_DRV_IBIAS GENMASK(31, 27)
+#define RG_HDMITX_SER_DIN GENMASK(25, 16)
+#define RG_HDMITX_CHLDC_TST GENMASK(15, 12)
+#define RG_HDMITX_CHLCK_TST GENMASK(11, 8)
+#define RG_HDMITX_RESERVE GENMASK(7, 0)
+#define HDMI_CON8 0x20
+#define RGS_HDMITX_2T1_LEV GENMASK(19, 16)
+#define RGS_HDMITX_2T1_EDG GENMASK(15, 12)
+#define RGS_HDMITX_5T1_LEV GENMASK(11, 8)
+#define RGS_HDMITX_5T1_EDG GENMASK(7, 4)
+#define RGS_HDMITX_PLUG_TST BIT(0)
+
+static int mtk_hdmi_pll_prepare(struct clk_hw *hw)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+ void __iomem *base = hdmi_phy->regs;
+
+ mtk_phy_set_bits(base + HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN);
+ mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_phy_clear_bits(base + HDMI_CON3, RG_HDMITX_MHLCK_EN);
+ mtk_phy_set_bits(base + HDMI_CON1, RG_HDMITX_PLL_BIAS_EN);
+ usleep_range(100, 150);
+ mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_PLL_EN);
+ usleep_range(100, 150);
+ mtk_phy_set_bits(base + HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN);
+ mtk_phy_set_bits(base + HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN);
+
+ return 0;
+}
+
+static void mtk_hdmi_pll_unprepare(struct clk_hw *hw)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+ void __iomem *base = hdmi_phy->regs;
+
+ mtk_phy_clear_bits(base + HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN);
+ mtk_phy_clear_bits(base + HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN);
+ usleep_range(100, 150);
+ mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_PLL_EN);
+ usleep_range(100, 150);
+ mtk_phy_clear_bits(base + HDMI_CON1, RG_HDMITX_PLL_BIAS_EN);
+ mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_phy_clear_bits(base + HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN);
+ usleep_range(100, 150);
+}
+
+static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ hdmi_phy->pll_rate = rate;
+ if (rate <= 74250000)
+ *parent_rate = rate;
+ else
+ *parent_rate = rate / 2;
+
+ return rate;
+}
+
+static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+ void __iomem *base = hdmi_phy->regs;
+ unsigned int pre_div;
+ unsigned int div;
+ unsigned int pre_ibias;
+ unsigned int hdmi_ibias;
+ unsigned int imp_en;
+
+ dev_dbg(hdmi_phy->dev, "%s: %lu Hz, parent: %lu Hz\n", __func__,
+ rate, parent_rate);
+
+ if (rate <= 27000000) {
+ pre_div = 0;
+ div = 3;
+ } else if (rate <= 74250000) {
+ pre_div = 1;
+ div = 2;
+ } else {
+ pre_div = 1;
+ div = 1;
+ }
+
+ mtk_phy_update_field(base + HDMI_CON0, RG_HDMITX_PLL_PREDIV, pre_div);
+ mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_PLL_POSDIV);
+ mtk_phy_update_bits(base + HDMI_CON0,
+ RG_HDMITX_PLL_IC | RG_HDMITX_PLL_IR,
+ FIELD_PREP(RG_HDMITX_PLL_IC, 0x1) |
+ FIELD_PREP(RG_HDMITX_PLL_IR, 0x1));
+ mtk_phy_update_field(base + HDMI_CON1, RG_HDMITX_PLL_TXDIV, div);
+ mtk_phy_update_bits(base + HDMI_CON0,
+ RG_HDMITX_PLL_FBKSEL | RG_HDMITX_PLL_FBKDIV,
+ FIELD_PREP(RG_HDMITX_PLL_FBKSEL, 0x1) |
+ FIELD_PREP(RG_HDMITX_PLL_FBKDIV, 19));
+ mtk_phy_update_field(base + HDMI_CON1, RG_HDMITX_PLL_DIVEN, 0x2);
+ mtk_phy_update_bits(base + HDMI_CON0,
+ RG_HDMITX_PLL_BP | RG_HDMITX_PLL_BC |
+ RG_HDMITX_PLL_BR,
+ FIELD_PREP(RG_HDMITX_PLL_BP, 0xc) |
+ FIELD_PREP(RG_HDMITX_PLL_BC, 0x2) |
+ FIELD_PREP(RG_HDMITX_PLL_BR, 0x1));
+ if (rate < 165000000) {
+ mtk_phy_clear_bits(base + HDMI_CON3, RG_HDMITX_PRD_IMP_EN);
+ pre_ibias = 0x3;
+ imp_en = 0x0;
+ hdmi_ibias = hdmi_phy->ibias;
+ } else {
+ mtk_phy_set_bits(base + HDMI_CON3, RG_HDMITX_PRD_IMP_EN);
+ pre_ibias = 0x6;
+ imp_en = 0xf;
+ hdmi_ibias = hdmi_phy->ibias_up;
+ }
+ mtk_phy_update_bits(base + HDMI_CON4,
+ RG_HDMITX_PRD_IBIAS_CLK | RG_HDMITX_PRD_IBIAS_D2 |
+ RG_HDMITX_PRD_IBIAS_D1 | RG_HDMITX_PRD_IBIAS_D0,
+ FIELD_PREP(RG_HDMITX_PRD_IBIAS_CLK, pre_ibias) |
+ FIELD_PREP(RG_HDMITX_PRD_IBIAS_D2, pre_ibias) |
+ FIELD_PREP(RG_HDMITX_PRD_IBIAS_D1, pre_ibias) |
+ FIELD_PREP(RG_HDMITX_PRD_IBIAS_D0, pre_ibias));
+ mtk_phy_update_field(base + HDMI_CON3, RG_HDMITX_DRV_IMP_EN, imp_en);
+ mtk_phy_update_bits(base + HDMI_CON6,
+ RG_HDMITX_DRV_IMP_CLK | RG_HDMITX_DRV_IMP_D2 |
+ RG_HDMITX_DRV_IMP_D1 | RG_HDMITX_DRV_IMP_D0,
+ FIELD_PREP(RG_HDMITX_DRV_IMP_CLK, hdmi_phy->drv_imp_clk) |
+ FIELD_PREP(RG_HDMITX_DRV_IMP_D2, hdmi_phy->drv_imp_d2) |
+ FIELD_PREP(RG_HDMITX_DRV_IMP_D1, hdmi_phy->drv_imp_d1) |
+ FIELD_PREP(RG_HDMITX_DRV_IMP_D0, hdmi_phy->drv_imp_d0));
+ mtk_phy_update_bits(base + HDMI_CON5,
+ RG_HDMITX_DRV_IBIAS_CLK | RG_HDMITX_DRV_IBIAS_D2 |
+ RG_HDMITX_DRV_IBIAS_D1 | RG_HDMITX_DRV_IBIAS_D0,
+ FIELD_PREP(RG_HDMITX_DRV_IBIAS_CLK, hdmi_ibias) |
+ FIELD_PREP(RG_HDMITX_DRV_IBIAS_D2, hdmi_ibias) |
+ FIELD_PREP(RG_HDMITX_DRV_IBIAS_D1, hdmi_ibias) |
+ FIELD_PREP(RG_HDMITX_DRV_IBIAS_D0, hdmi_ibias));
+ return 0;
+}
+
+static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw);
+
+ return hdmi_phy->pll_rate;
+}
+
+static const struct clk_ops mtk_hdmi_phy_pll_ops = {
+ .prepare = mtk_hdmi_pll_prepare,
+ .unprepare = mtk_hdmi_pll_unprepare,
+ .set_rate = mtk_hdmi_pll_set_rate,
+ .round_rate = mtk_hdmi_pll_round_rate,
+ .recalc_rate = mtk_hdmi_pll_recalc_rate,
+};
+
+static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy)
+{
+ mtk_phy_set_bits(hdmi_phy->regs + HDMI_CON3,
+ RG_HDMITX_SER_EN | RG_HDMITX_PRD_EN |
+ RG_HDMITX_DRV_EN);
+ usleep_range(100, 150);
+}
+
+static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
+{
+ mtk_phy_clear_bits(hdmi_phy->regs + HDMI_CON3,
+ RG_HDMITX_DRV_EN | RG_HDMITX_PRD_EN |
+ RG_HDMITX_SER_EN);
+}
+
+struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf = {
+ .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE,
+ .hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
+ .hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds,
+ .hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds,
+};
+
+MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek MT8173 HDMI PHY Driver");
+MODULE_LICENSE("GPL v2");