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249 lines
8.8 KiB
249 lines
8.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2018 MediaTek Inc. |
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* Author: Chunhui Dai <[email protected]> |
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*/ |
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#include "phy-mtk-hdmi.h" |
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#define HDMI_CON0 0x00 |
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#define RG_HDMITX_DRV_IBIAS 0 |
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#define RG_HDMITX_DRV_IBIAS_MASK (0x3f << 0) |
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#define RG_HDMITX_EN_SER 12 |
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#define RG_HDMITX_EN_SER_MASK (0x0f << 12) |
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#define RG_HDMITX_EN_SLDO 16 |
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#define RG_HDMITX_EN_SLDO_MASK (0x0f << 16) |
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#define RG_HDMITX_EN_PRED 20 |
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#define RG_HDMITX_EN_PRED_MASK (0x0f << 20) |
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#define RG_HDMITX_EN_IMP 24 |
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#define RG_HDMITX_EN_IMP_MASK (0x0f << 24) |
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#define RG_HDMITX_EN_DRV 28 |
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#define RG_HDMITX_EN_DRV_MASK (0x0f << 28) |
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#define HDMI_CON1 0x04 |
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#define RG_HDMITX_PRED_IBIAS 18 |
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#define RG_HDMITX_PRED_IBIAS_MASK (0x0f << 18) |
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#define RG_HDMITX_PRED_IMP (0x01 << 22) |
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#define RG_HDMITX_DRV_IMP 26 |
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#define RG_HDMITX_DRV_IMP_MASK (0x3f << 26) |
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#define HDMI_CON2 0x08 |
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#define RG_HDMITX_EN_TX_CKLDO (0x01 << 0) |
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#define RG_HDMITX_EN_TX_POSDIV (0x01 << 1) |
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#define RG_HDMITX_TX_POSDIV 3 |
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#define RG_HDMITX_TX_POSDIV_MASK (0x03 << 3) |
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#define RG_HDMITX_EN_MBIAS (0x01 << 6) |
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#define RG_HDMITX_MBIAS_LPF_EN (0x01 << 7) |
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#define HDMI_CON4 0x10 |
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#define RG_HDMITX_RESERVE_MASK (0xffffffff << 0) |
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#define HDMI_CON6 0x18 |
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#define RG_HTPLL_BR 0 |
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#define RG_HTPLL_BR_MASK (0x03 << 0) |
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#define RG_HTPLL_BC 2 |
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#define RG_HTPLL_BC_MASK (0x03 << 2) |
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#define RG_HTPLL_BP 4 |
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#define RG_HTPLL_BP_MASK (0x0f << 4) |
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#define RG_HTPLL_IR 8 |
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#define RG_HTPLL_IR_MASK (0x0f << 8) |
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#define RG_HTPLL_IC 12 |
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#define RG_HTPLL_IC_MASK (0x0f << 12) |
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#define RG_HTPLL_POSDIV 16 |
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#define RG_HTPLL_POSDIV_MASK (0x03 << 16) |
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#define RG_HTPLL_PREDIV 18 |
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#define RG_HTPLL_PREDIV_MASK (0x03 << 18) |
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#define RG_HTPLL_FBKSEL 20 |
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#define RG_HTPLL_FBKSEL_MASK (0x03 << 20) |
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#define RG_HTPLL_RLH_EN (0x01 << 22) |
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#define RG_HTPLL_FBKDIV 24 |
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#define RG_HTPLL_FBKDIV_MASK (0x7f << 24) |
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#define RG_HTPLL_EN (0x01 << 31) |
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#define HDMI_CON7 0x1c |
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#define RG_HTPLL_AUTOK_EN (0x01 << 23) |
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#define RG_HTPLL_DIVEN 28 |
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#define RG_HTPLL_DIVEN_MASK (0x07 << 28) |
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static int mtk_hdmi_pll_prepare(struct clk_hw *hw) |
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{ |
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struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); |
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usleep_range(80, 100); |
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return 0; |
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} |
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static void mtk_hdmi_pll_unprepare(struct clk_hw *hw) |
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{ |
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struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); |
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usleep_range(80, 100); |
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} |
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static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, |
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unsigned long *parent_rate) |
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{ |
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return rate; |
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} |
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static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, |
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unsigned long parent_rate) |
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{ |
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struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); |
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u32 pos_div; |
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if (rate <= 64000000) |
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pos_div = 3; |
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else if (rate <= 128000000) |
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pos_div = 2; |
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else |
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pos_div = 1; |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_PREDIV_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IC), |
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RG_HTPLL_IC_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IR), |
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RG_HTPLL_IR_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON2, (pos_div << RG_HDMITX_TX_POSDIV), |
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RG_HDMITX_TX_POSDIV_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (1 << RG_HTPLL_FBKSEL), |
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RG_HTPLL_FBKSEL_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (19 << RG_HTPLL_FBKDIV), |
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RG_HTPLL_FBKDIV_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON7, (0x2 << RG_HTPLL_DIVEN), |
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RG_HTPLL_DIVEN_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0xc << RG_HTPLL_BP), |
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RG_HTPLL_BP_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x2 << RG_HTPLL_BC), |
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RG_HTPLL_BC_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_BR), |
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RG_HTPLL_BR_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PRED_IMP); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, (0x3 << RG_HDMITX_PRED_IBIAS), |
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RG_HDMITX_PRED_IBIAS_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_IMP_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, (0x28 << RG_HDMITX_DRV_IMP), |
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RG_HDMITX_DRV_IMP_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON4, 0x28, RG_HDMITX_RESERVE_MASK); |
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mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, (0xa << RG_HDMITX_DRV_IBIAS), |
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RG_HDMITX_DRV_IBIAS_MASK); |
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return 0; |
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} |
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static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw, |
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unsigned long parent_rate) |
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{ |
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struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); |
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unsigned long out_rate, val; |
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val = (readl(hdmi_phy->regs + HDMI_CON6) |
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& RG_HTPLL_PREDIV_MASK) >> RG_HTPLL_PREDIV; |
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switch (val) { |
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case 0x00: |
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out_rate = parent_rate; |
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break; |
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case 0x01: |
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out_rate = parent_rate / 2; |
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break; |
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default: |
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out_rate = parent_rate / 4; |
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break; |
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} |
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val = (readl(hdmi_phy->regs + HDMI_CON6) |
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& RG_HTPLL_FBKDIV_MASK) >> RG_HTPLL_FBKDIV; |
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out_rate *= (val + 1) * 2; |
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val = (readl(hdmi_phy->regs + HDMI_CON2) |
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& RG_HDMITX_TX_POSDIV_MASK); |
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out_rate >>= (val >> RG_HDMITX_TX_POSDIV); |
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if (readl(hdmi_phy->regs + HDMI_CON2) & RG_HDMITX_EN_TX_POSDIV) |
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out_rate /= 5; |
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return out_rate; |
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} |
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static const struct clk_ops mtk_hdmi_phy_pll_ops = { |
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.prepare = mtk_hdmi_pll_prepare, |
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.unprepare = mtk_hdmi_pll_unprepare, |
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.set_rate = mtk_hdmi_pll_set_rate, |
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.round_rate = mtk_hdmi_pll_round_rate, |
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.recalc_rate = mtk_hdmi_pll_recalc_rate, |
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}; |
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static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy) |
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{ |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); |
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mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); |
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usleep_range(80, 100); |
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} |
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static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) |
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{ |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); |
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usleep_range(80, 100); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); |
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mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); |
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usleep_range(80, 100); |
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} |
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struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = { |
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.flags = CLK_SET_RATE_GATE, |
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.pll_default_off = true, |
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.hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops, |
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.hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds, |
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.hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds, |
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}; |
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MODULE_AUTHOR("Chunhui Dai <[email protected]>"); |
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MODULE_DESCRIPTION("MediaTek HDMI PHY Driver"); |
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MODULE_LICENSE("GPL v2");
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