Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 227 insertions, 0 deletions

diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c
new file mode 100644
index 000000000..e51b2d13e
--- /dev/null
+++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c
@@ -0,0 +1,227 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2018 MediaTek Inc.
+ * Author: Chunhui Dai <chunhui.dai@mediatek.com>
+ */
+
+#include "phy-mtk-hdmi.h"
+#include "phy-mtk-io.h"
+
+#define HDMI_CON0	0x00
+#define RG_HDMITX_DRV_IBIAS_MASK	GENMASK(5, 0)
+#define RG_HDMITX_EN_SER_MASK		GENMASK(15, 12)
+#define RG_HDMITX_EN_SLDO_MASK		GENMASK(19, 16)
+#define RG_HDMITX_EN_PRED_MASK		GENMASK(23, 20)
+#define RG_HDMITX_EN_IMP_MASK		GENMASK(27, 24)
+#define RG_HDMITX_EN_DRV_MASK		GENMASK(31, 28)
+
+#define HDMI_CON1	0x04
+#define RG_HDMITX_PRED_IBIAS_MASK	GENMASK(21, 18)
+#define RG_HDMITX_PRED_IMP		BIT(22)
+#define RG_HDMITX_DRV_IMP_MASK		GENMASK(31, 26)
+
+#define HDMI_CON2	0x08
+#define RG_HDMITX_EN_TX_CKLDO		BIT(0)
+#define RG_HDMITX_EN_TX_POSDIV		BIT(1)
+#define RG_HDMITX_TX_POSDIV_MASK	GENMASK(4, 3)
+#define RG_HDMITX_EN_MBIAS		BIT(6)
+#define RG_HDMITX_MBIAS_LPF_EN		BIT(7)
+
+#define HDMI_CON4	0x10
+#define RG_HDMITX_RESERVE_MASK		GENMASK(31, 0)
+
+#define HDMI_CON6	0x18
+#define RG_HTPLL_BR_MASK		GENMASK(1, 0)
+#define RG_HTPLL_BC_MASK		GENMASK(3, 2)
+#define RG_HTPLL_BP_MASK		GENMASK(7, 4)
+#define RG_HTPLL_IR_MASK		GENMASK(11, 8)
+#define RG_HTPLL_IC_MASK		GENMASK(15, 12)
+#define RG_HTPLL_POSDIV_MASK		GENMASK(17, 16)
+#define RG_HTPLL_PREDIV_MASK		GENMASK(19, 18)
+#define RG_HTPLL_FBKSEL_MASK		GENMASK(21, 20)
+#define RG_HTPLL_RLH_EN			BIT(22)
+#define RG_HTPLL_FBKDIV_MASK		GENMASK(30, 24)
+#define RG_HTPLL_EN			BIT(31)
+
+#define HDMI_CON7	0x1c
+#define RG_HTPLL_AUTOK_EN		BIT(23)
+#define RG_HTPLL_DIVEN_MASK		GENMASK(30, 28)
+
+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_CON7, RG_HTPLL_AUTOK_EN);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_RLH_EN);
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_EN_MBIAS);
+	usleep_range(80, 100);
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_EN);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_EN_TX_CKLDO);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
+	usleep_range(80, 100);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_SER_MASK);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
+	usleep_range(80, 100);
+	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_CON0, RG_HDMITX_EN_DRV_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_SER_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
+	usleep_range(80, 100);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_EN_TX_CKLDO);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_EN);
+	usleep_range(80, 100);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_EN_MBIAS);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_RLH_EN);
+	mtk_phy_clear_bits(base + HDMI_CON7, RG_HTPLL_AUTOK_EN);
+	usleep_range(80, 100);
+}
+
+static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+				    unsigned long *parent_rate)
+{
+	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;
+	u32 pos_div;
+
+	if (rate <= 64000000)
+		pos_div = 3;
+	else if (rate <= 128000000)
+		pos_div = 2;
+	else
+		pos_div = 1;
+
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_PREDIV_MASK);
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_EN_TX_POSDIV);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_IC_MASK, 0x1);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_IR_MASK, 0x1);
+	mtk_phy_update_field(base + HDMI_CON2, RG_HDMITX_TX_POSDIV_MASK, pos_div);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_FBKSEL_MASK, 1);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_FBKDIV_MASK, 19);
+	mtk_phy_update_field(base + HDMI_CON7, RG_HTPLL_DIVEN_MASK, 0x2);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_BP_MASK, 0xc);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_BC_MASK, 0x2);
+	mtk_phy_update_field(base + HDMI_CON6, RG_HTPLL_BR_MASK, 0x1);
+
+	mtk_phy_clear_bits(base + HDMI_CON1, RG_HDMITX_PRED_IMP);
+	mtk_phy_update_field(base + HDMI_CON1, RG_HDMITX_PRED_IBIAS_MASK, 0x3);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_IMP_MASK);
+	mtk_phy_update_field(base + HDMI_CON1, RG_HDMITX_DRV_IMP_MASK, 0x28);
+	mtk_phy_update_field(base + HDMI_CON4, RG_HDMITX_RESERVE_MASK, 0x28);
+	mtk_phy_update_field(base + HDMI_CON0, RG_HDMITX_DRV_IBIAS_MASK, 0xa);
+	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);
+	unsigned long out_rate, val;
+	u32 tmp;
+
+	tmp = readl(hdmi_phy->regs + HDMI_CON6);
+	val = FIELD_GET(RG_HTPLL_PREDIV_MASK, tmp);
+	switch (val) {
+	case 0x00:
+		out_rate = parent_rate;
+		break;
+	case 0x01:
+		out_rate = parent_rate / 2;
+		break;
+	default:
+		out_rate = parent_rate / 4;
+		break;
+	}
+
+	val = FIELD_GET(RG_HTPLL_FBKDIV_MASK, tmp);
+	out_rate *= (val + 1) * 2;
+
+	tmp = readl(hdmi_phy->regs + HDMI_CON2);
+	val = FIELD_GET(RG_HDMITX_TX_POSDIV_MASK, tmp);
+	out_rate >>= val;
+
+	if (tmp & RG_HDMITX_EN_TX_POSDIV)
+		out_rate /= 5;
+
+	return out_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)
+{
+	void __iomem *base = hdmi_phy->regs;
+
+	mtk_phy_set_bits(base + HDMI_CON7, RG_HTPLL_AUTOK_EN);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_RLH_EN);
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_EN_MBIAS);
+	usleep_range(80, 100);
+	mtk_phy_set_bits(base + HDMI_CON6, RG_HTPLL_EN);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_EN_TX_CKLDO);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
+	usleep_range(80, 100);
+	mtk_phy_set_bits(base + HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_SER_MASK);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
+	mtk_phy_set_bits(base + HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
+	usleep_range(80, 100);
+}
+
+static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
+{
+	void __iomem *base = hdmi_phy->regs;
+
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_DRV_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_PRED_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_SER_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN);
+	usleep_range(80, 100);
+	mtk_phy_clear_bits(base + HDMI_CON0, RG_HDMITX_EN_SLDO_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_EN_TX_CKLDO);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_EN);
+	usleep_range(80, 100);
+	mtk_phy_clear_bits(base + HDMI_CON2, RG_HDMITX_EN_MBIAS);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_POSDIV_MASK);
+	mtk_phy_clear_bits(base + HDMI_CON6, RG_HTPLL_RLH_EN);
+	mtk_phy_clear_bits(base + HDMI_CON7, RG_HTPLL_AUTOK_EN);
+	usleep_range(80, 100);
+}
+
+struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = {
+	.flags = CLK_SET_RATE_GATE,
+	.pll_default_off = true,
+	.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("Chunhui Dai <chunhui.dai@mediatek.com>");
+MODULE_DESCRIPTION("MediaTek HDMI PHY Driver");
+MODULE_LICENSE("GPL v2");