| Message ID | 20220919-v3-10-a803f2660127@baylibre.com |
|---|---|
| State | Changes Requested |
| Headers | show |
| Series | Add MT8195 HDMI support | expand |
On 04-11-22, 15:09, Guillaume Ranquet wrote: > Add basic support for the mediatek hdmi phy on MT8195 SoC Are phy patches in this series dependent upon changes in drm/, if not consider splitting them up! > > Signed-off-by: Guillaume Ranquet <granquet@baylibre.com> > --- > drivers/phy/mediatek/Makefile | 1 + > drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 543 +++++++++++++++++++++++++++++ > drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h | 109 ++++++ > drivers/phy/mediatek/phy-mtk-hdmi.c | 3 + > drivers/phy/mediatek/phy-mtk-hdmi.h | 1 + > 5 files changed, 657 insertions(+) > > diff --git a/drivers/phy/mediatek/Makefile b/drivers/phy/mediatek/Makefile > index fb1f8edaffa7..c9a50395533e 100644 > --- a/drivers/phy/mediatek/Makefile > +++ b/drivers/phy/mediatek/Makefile > @@ -12,6 +12,7 @@ obj-$(CONFIG_PHY_MTK_XSPHY) += phy-mtk-xsphy.o > phy-mtk-hdmi-drv-y := phy-mtk-hdmi.o > phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt2701.o > phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8173.o > +phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8195.o > obj-$(CONFIG_PHY_MTK_HDMI) += phy-mtk-hdmi-drv.o > > phy-mtk-mipi-dsi-drv-y := phy-mtk-mipi-dsi.o > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c > new file mode 100644 > index 000000000000..48efd3936f29 > --- /dev/null > +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c > @@ -0,0 +1,543 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Copyright (c) 2022 MediaTek Inc. > + * Copyright (c) 2022 BayLibre, SAS > + */ > +#include <linux/delay.h> > +#include <linux/io.h> > +#include <linux/mfd/syscon.h> > +#include <linux/module.h> > +#include <linux/phy/phy.h> > +#include <linux/platform_device.h> > +#include <linux/types.h> > +#include <linux/nvmem-consumer.h> > + > +#include "phy-mtk-io.h" > +#include "phy-mtk-hdmi.h" > +#include "phy-mtk-hdmi-mt8195.h" > + > +static void mtk_hdmi_ana_fifo_en(struct mtk_hdmi_phy *hdmi_phy) > +{ > + /* make data fifo writable for hdmi2.0 */ > + mtk_phy_set_bits(hdmi_phy->regs + HDMI_ANA_CTL, REG_ANA_HDMI20_FIFO_EN); > +} > + > +static void > +mtk_mt8195_phy_tmds_high_bit_clk_ratio(struct mtk_hdmi_phy *hdmi_phy, > + bool enable) > +{ > + void __iomem *regs = hdmi_phy->regs; > + > + mtk_hdmi_ana_fifo_en(hdmi_phy); > + > + /* HDMI 2.0 specification, 3.4Gbps <= TMDS Bit Rate <= 6G, > + * clock bit ratio 1:40, under 3.4Gbps, clock bit ratio 1:10 > + */ > + if (enable) > + mtk_phy_update_field(regs + HDMI20_CLK_CFG, REG_TXC_DIV, REG_TXC_DIV); > + else > + mtk_phy_clear_bits(regs + HDMI20_CLK_CFG, REG_TXC_DIV); > +} > + > +static void mtk_hdmi_pll_select_source(struct clk_hw *hw) > +{ > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + void __iomem *regs = hdmi_phy->regs; > + > + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_REF_XTAL_SEL); > + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_REF_RESPLL_SEL); > + > + /* DA_HDMITX21_REF_CK for TXPLL input source */ > + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITXPLL_REF_CK_SEL); > +} > + > +static int mtk_hdmi_pll_performance_setting(struct clk_hw *hw) > +{ > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + void __iomem *regs = hdmi_phy->regs; > + > + /* BP2 */ > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_BP2); > + > + /* BC */ > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BC); > + > + /* IC */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IC, 0x1); > + > + /* BR */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BR, 0x2); > + > + /* IR */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IR, 0x2); > + > + /* BP */ > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BP); > + > + /* IBAND_FIX_EN, RESERVE[14] */ > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_IBAND_FIX_EN); > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT14); > + > + /* HIKVCO */ > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_HIKVCO); > + > + /* HREN */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_HREN, 0x1); > + > + /* LVR_SEL */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_LVR_SEL, 0x1); > + > + /* RG_HDMITXPLL_RESERVE[12:11] */ > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT12_11); > + > + /* TCL_EN */ > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_TCL_EN); > + > + return 0; > +} > + > +static int mtk_hdmi_pll_set_hw(struct clk_hw *hw, unsigned char prediv, > + unsigned char fbkdiv_high, > + unsigned long fbkdiv_low, > + unsigned char fbkdiv_hs3, unsigned char posdiv1, > + unsigned char posdiv2, unsigned char txprediv, > + unsigned char txposdiv, > + unsigned char digital_div) > +{ > + unsigned char txposdiv_value = 0; > + unsigned char div3_ctrl_value = 0; > + unsigned char posdiv_vallue = 0; > + unsigned char div_ctrl_value = 0; > + unsigned char reserve_3_2_value = 0; > + unsigned char prediv_value = 0; > + unsigned char reserve13_value = 0; few of these initialization are superfluous, pls remove > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + void __iomem *regs = hdmi_phy->regs; > + > + mtk_hdmi_pll_select_source(hw); > + > + mtk_hdmi_pll_performance_setting(hw); > + > + mtk_phy_update_field(regs + HDMI_1_CFG_10, RG_HDMITX21_BIAS_PE_BG_VREF_SEL, 0x2); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_VREF_SEL); > + mtk_phy_update_field(regs + HDMI_1_CFG_9, RG_HDMITX21_SLDO_VREF_SEL, 0x2); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BIAS_PE_VREF_SELB); > + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDOLPF_EN); > + mtk_phy_update_field(regs + HDMI_1_CFG_6, RG_HDMITX21_INTR_CAL, 0x11); > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); > + > + /* TXPOSDIV */ > + txposdiv_value = ilog2(txposdiv); > + > + mtk_phy_update_field(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV, txposdiv_value); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_EN); > + > + /* TXPREDIV */ > + switch (txprediv) { > + case 2: > + div3_ctrl_value = 0x0; > + posdiv_vallue = 0x0; > + break; > + case 4: > + div3_ctrl_value = 0x0; > + posdiv_vallue = 0x1; > + break; > + case 6: > + div3_ctrl_value = 0x1; > + posdiv_vallue = 0x0; > + break; > + case 12: > + div3_ctrl_value = 0x1; > + posdiv_vallue = 0x1; > + break; > + default: > + return -EINVAL; > + } > + > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_POSDIV_DIV3_CTRL, div3_ctrl_value); > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_POSDIV, posdiv_vallue ); > + > + /* POSDIV1 */ > + switch (posdiv1) { > + case 5: > + div_ctrl_value = 0x0; > + break; > + case 10: > + div_ctrl_value = 0x1; > + break; > + case 12: > + div_ctrl_value = 0x2; > + break; > + case 15: > + div_ctrl_value = 0x3; > + break; > + default: > + return -EINVAL; > + } > + > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_DIV_CTRL, div_ctrl_value); > + > + /* DE add new setting */ > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT14); > + > + /* POSDIV2 */ > + switch (posdiv2) { > + case 1: > + reserve_3_2_value = 0x0; > + break; > + case 2: > + reserve_3_2_value = 0x1; > + break; > + case 4: > + reserve_3_2_value = 0x2; > + break; > + case 6: > + reserve_3_2_value = 0x3; > + break; > + default: > + return -EINVAL; > + } > + > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT3_2, reserve_3_2_value); > + > + /* DE add new setting */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT1_0, 0x2); > + > + /* PREDIV */ > + prediv_value = ilog2(prediv); > + > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_PREDIV, prediv_value); > + > + /* FBKDIV_HS3 */ > + reserve13_value = ilog2(fbkdiv_hs3); > + > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT13, reserve13_value); > + > + /* FBDIV */ > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_FBKDIV_HIGH, fbkdiv_high); > + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_3, RG_HDMITXPLL_FBKDIV_LOW, fbkdiv_low); > + > + > + /* Digital DIVIDER */ > + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_PIXEL_CLOCK_SEL); > + > + if (digital_div == 1) { > + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_PIXEL_CLOCK); > + } else { > + mtk_phy_set_bits(regs + HDMI_CTL_3, REG_HDMITX_PIXEL_CLOCK); > + mtk_phy_update_field(regs + HDMI_CTL_3, REG_HDMITXPLL_DIV, digital_div - 1); > + } > + > + return 0; > +} > + > +#define PCW_DECIMAL_WIDTH 24 can we have defines at top of the file please, grouped together > +static int mtk_hdmi_pll_calculate_params(struct clk_hw *hw, unsigned long rate, > + unsigned long parent_rate) > +{ > + int ret; > + unsigned long long tmds_clk = 0; > + unsigned long long pixel_clk = 0; > + /* pll input source frequency */ > + unsigned long long da_hdmitx21_ref_ck = 0; > + /* ICO output clk */ > + unsigned long long ns_hdmipll_ck = 0; > + /* source clk for Display digital */ > + unsigned long long ad_hdmipll_pixel_ck = 0; > + unsigned char digital_div = 0; > + unsigned long long pcw = 0; > + unsigned char txprediv = 0; > + unsigned char txposdiv = 0; > + unsigned char fbkdiv_high = 0; > + unsigned long fbkdiv_low = 0; > + unsigned char posdiv1 = 0; > + unsigned char posdiv2 = 0; > + /* prediv is always 1 */ > + unsigned char prediv = 1; > + /* fbkdiv_hs3 is always 1 */ > + unsigned char fbkdiv_hs3 = 1; > + int i = 0; here as well... > + unsigned char txpredivs[4] = { 2, 4, 6, 12 }; > + > + pixel_clk = rate; > + tmds_clk = pixel_clk; > + > + if (tmds_clk < 25000000 || tmds_clk > 594000000) > + return -EINVAL; > + > + /* in Hz */ > + da_hdmitx21_ref_ck = 26000000UL; > + > + /* TXPOSDIV stage treatment: > + * 0M < TMDS clk < 54M /8 > + * 54M <= TMDS clk < 148.35M /4 > + * 148.35M <=TMDS clk < 296.7M /2 > + * 296.7 <=TMDS clk <= 594M /1 > + */ > + if (tmds_clk < 54000000UL) > + txposdiv = 8; > + else if (tmds_clk >= 54000000UL && tmds_clk < 148350000UL) > + txposdiv = 4; > + else if (tmds_clk >= 148350000UL && tmds_clk < 296700000UL) > + txposdiv = 2; > + else if (tmds_clk >= 296700000UL && tmds_clk <= 594000000UL) > + txposdiv = 1; > + else > + return -EINVAL; > + > + /* calculate txprediv: can be 2, 4, 6, 12 > + * ICO clk = 5*TMDS_CLK*TXPOSDIV*TXPREDIV > + * ICO clk constraint: 5G =< ICO clk <= 12G > + */ > + for (i = 0; i < ARRAY_SIZE(txpredivs); i++) { > + ns_hdmipll_ck = 5 * tmds_clk * txposdiv * txpredivs[i]; > + if (ns_hdmipll_ck >= 5000000000UL && > + ns_hdmipll_ck <= 12000000000UL) > + break; > + } > + if (i == (ARRAY_SIZE(txpredivs) - 1) && > + (ns_hdmipll_ck < 5000000000UL || ns_hdmipll_ck > 12000000000UL)) { > + return -EINVAL; > + } > + if (i == ARRAY_SIZE(txpredivs)) > + return -EINVAL; > + > + txprediv = txpredivs[i]; > + > + /* PCW calculation: FBKDIV > + * formula: pcw=(frequency_out*2^pcw_bit) / frequency_in / FBKDIV_HS3; > + * RG_HDMITXPLL_FBKDIV[32:0]: > + * [32,24] 9bit integer, [23,0]:24bit fraction > + */ > + pcw = ns_hdmipll_ck; > + pcw = pcw << PCW_DECIMAL_WIDTH; > + pcw = pcw / da_hdmitx21_ref_ck; > + pcw = pcw / fbkdiv_hs3; > + > + if ((pcw / BIT(32)) > 1) { > + return -EINVAL; > + } else if ((pcw / BIT(32)) == 1) { > + fbkdiv_high = 1; > + fbkdiv_low = pcw % BIT(32); > + } else { > + fbkdiv_high = 0; > + fbkdiv_low = pcw; > + } > + > + /* posdiv1: > + * posdiv1 stage treatment according to color_depth: > + * 24bit -> posdiv1 /10, 30bit -> posdiv1 /12.5, > + * 36bit -> posdiv1 /15, 48bit -> posdiv1 /10 > + */ > + posdiv1 = 10; > + posdiv2 = 1; > + ad_hdmipll_pixel_ck = (ns_hdmipll_ck / 10) / 1; > + > + /* Digital clk divider, max /32 */ > + digital_div = ad_hdmipll_pixel_ck / pixel_clk; > + if (!(digital_div <= 32 && digital_div >= 1)) > + return -EINVAL; > + > + ret = mtk_hdmi_pll_set_hw(hw, prediv, fbkdiv_high, fbkdiv_low, > + fbkdiv_hs3, posdiv1, posdiv2, txprediv, > + txposdiv, digital_div); > + if (ret) > + return -EINVAL; > + > + return 0; > +} > + > +static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw) > +{ > + unsigned char data_channel_bias, clk_channel_bias; > + unsigned char impedance, impedance_en; > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + unsigned long tmds_clk; > + unsigned long pixel_clk = hdmi_phy->pll_rate; > + void __iomem *regs = hdmi_phy->regs; > + > + tmds_clk = pixel_clk; > + > + /* bias & impedance setting: > + * 3G < data rate <= 6G: enable impedance 100ohm, > + * data channel bias 24mA, clock channel bias 20mA > + * pixel clk >= HD, 74.175MHZ <= pixel clk <= 300MHZ: > + * enalbe impedance 100ohm > + * data channel 20mA, clock channel 16mA > + * 27M =< pixel clk < 74.175: disable impedance > + * data channel & clock channel bias 10mA > + */ > + > + /* 3G < data rate <= 6G, 300M < tmds rate <= 594M */ > + if (tmds_clk > 300000000UL && tmds_clk <= 594000000UL) { > + data_channel_bias = 0x3c; /* 24mA */ > + clk_channel_bias = 0x34; /* 20mA */ > + impedance_en = 0xf; > + impedance = 0x36; /* 100ohm */ > + } else if (pixel_clk >= 74175000UL && pixel_clk <= 300000000UL) { > + data_channel_bias = 0x34; /* 20mA */ > + clk_channel_bias = 0x2c; /* 16mA */ > + impedance_en = 0xf; > + impedance = 0x36; /* 100ohm */ > + } else if (pixel_clk >= 27000000UL && pixel_clk < 74175000UL) { > + data_channel_bias = 0x14; /* 10mA */ > + clk_channel_bias = 0x14; /* 10mA */ > + impedance_en = 0x0; > + impedance = 0x0; > + } else { > + return -EINVAL; > + } > + > + /* bias */ > + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D0, data_channel_bias); > + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D1, data_channel_bias); > + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D2, data_channel_bias); > + mtk_phy_update_field(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_IBIAS_CLK, clk_channel_bias); > + > + /* impedance */ > + mtk_phy_update_field(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_IMP_EN, impedance_en); > + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D0_EN1, impedance); > + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D1_EN1, impedance); > + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D2_EN1, impedance); > + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_CLK_EN1, impedance); > + > + return 0; > +} > + > +static int mtk_hdmi_pll_prepare(struct clk_hw *hw) > +{ > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + void __iomem *regs = hdmi_phy->regs; > + > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV_EN); > + > + mtk_phy_set_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_SER_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D0_DRV_OP_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D1_DRV_OP_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D2_DRV_OP_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_CK_DRV_OP_EN); > + > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D0_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D1_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D2_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_CK_EN); > + > + mtk_hdmi_pll_drv_setting(hw); > + > + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD); > + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN); > + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN); > + > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_PWR_ON); > + usleep_range(5, 10); > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_ISO_EN); > + usleep_range(5, 10); > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); > + usleep_range(30, 50); > + 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 *regs = hdmi_phy->regs; > + > + mtk_phy_set_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN); > + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN); > + > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); > + usleep_range(10, 20); > + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_ISO_EN); > + usleep_range(10, 20); > + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_PWR_ON); > +} > + > +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); > + > + dev_dbg(hdmi_phy->dev, "%s: %lu Hz, parent: %lu Hz\n", __func__, rate, > + parent_rate); > + > + return mtk_hdmi_pll_calculate_params(hw, rate, parent_rate); > +} > + > +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; > + return rate; > +} > + > +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_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 vtx_signal_en(struct mtk_hdmi_phy *hdmi_phy, bool on) > +{ > + void __iomem *regs = hdmi_phy->regs; > + > + if (on) > + mtk_phy_set_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_EN); > + else > + mtk_phy_clear_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_EN); > +} > + > +static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy) > +{ > + vtx_signal_en(hdmi_phy, true); > + usleep_range(100, 150); > +} > + > +static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) > +{ > + vtx_signal_en(hdmi_phy, false); > +} > + > +static int mtk_hdmi_phy_configure(struct phy *phy, union phy_configure_opts *opts) > +{ > + struct phy_configure_opts_dp *dp_opts = &opts->dp; > + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy); > + int ret = 0; again! > + > + ret = clk_set_rate(hdmi_phy->pll, dp_opts->link_rate); > + > + if (ret) > + return ret; > + > + mtk_mt8195_phy_tmds_high_bit_clk_ratio(hdmi_phy, false); > + > + return ret; > +} > + > +struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf = { > + .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, > + .hdmi_phy_clk_ops = &mtk_hdmi_pll_ops, > + .hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds, > + .hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds, > + .hdmi_phy_configure = mtk_hdmi_phy_configure, > +}; > + > +MODULE_AUTHOR("Can Zeng <can.zeng@mediatek.com>"); > +MODULE_DESCRIPTION("MediaTek MT8195 HDMI PHY Driver"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h > new file mode 100644 > index 000000000000..2c139f57ab91 > --- /dev/null > +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h > @@ -0,0 +1,109 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (c) 2022 MediaTek Inc. > + * Copyright (c) 2022 BayLibre, SAS > + */ > + > +#ifndef _MTK_HDMI_PHY_8195_H > +#define _MTK_HDMI_PHY_8195_H > + > +#include <linux/clk.h> > +#include <linux/clk-provider.h> > +#include <linux/types.h> > + > +#define HDMI20_CLK_CFG 0x70 > +#define REG_TXC_DIV GENMASK(31, 30) > + > +#define HDMI_1_CFG_0 0x00 > +#define RG_HDMITX21_DRV_IBIAS_CLK GENMASK(10, 5) > +#define RG_HDMITX21_DRV_IMP_EN GENMASK(23, 20) > +#define RG_HDMITX21_DRV_EN GENMASK(27, 24) > +#define RG_HDMITX21_SER_EN GENMASK(31, 28) > + > +#define HDMI_1_CFG_1 0x04 > +#define RG_HDMITX21_DRV_IBIAS_D0 GENMASK(19, 14) > +#define RG_HDMITX21_DRV_IBIAS_D1 GENMASK(25, 20) > +#define RG_HDMITX21_DRV_IBIAS_D2 GENMASK(31, 26) > + > +#define HDMI_1_CFG_10 0x40 > +#define RG_HDMITXPLL_REF_CK_SEL GENMASK(2, 1) > +#define RG_HDMITX21_VREF_SEL BIT(4) > +#define RG_HDMITX21_BIAS_PE_VREF_SELB BIT(10) > +#define RG_HDMITX21_BIAS_PE_BG_VREF_SEL GENMASK(16, 15) > +#define RG_HDMITX21_BG_PWD BIT(20) > + > +#define HDMI_1_CFG_2 0x08 > +#define RG_HDMITX21_DRV_IMP_D0_EN1 GENMASK(13, 8) > +#define RG_HDMITX21_DRV_IMP_D1_EN1 GENMASK(19, 14) > +#define RG_HDMITX21_DRV_IMP_D2_EN1 GENMASK(25, 20) > +#define RG_HDMITX21_DRV_IMP_CLK_EN1 GENMASK(31, 26) > + > +#define HDMI_1_CFG_3 0x0c > +#define RG_HDMITX21_CKLDO_EN BIT(3) > +#define RG_HDMITX21_SLDOLPF_EN BIT(7) > +#define RG_HDMITX21_SLDO_EN GENMASK(11, 8) > + > +#define HDMI_1_CFG_6 0x18 > +#define RG_HDMITX21_D2_DRV_OP_EN BIT(8) > +#define RG_HDMITX21_D1_DRV_OP_EN BIT(9) > +#define RG_HDMITX21_D0_DRV_OP_EN BIT(10) > +#define RG_HDMITX21_CK_DRV_OP_EN BIT(11) > +#define RG_HDMITX21_FRL_EN BIT(12) > +#define RG_HDMITX21_FRL_CK_EN BIT(13) > +#define RG_HDMITX21_FRL_D0_EN BIT(14) > +#define RG_HDMITX21_FRL_D1_EN BIT(15) > +#define RG_HDMITX21_FRL_D2_EN BIT(16) > +#define RG_HDMITX21_INTR_CAL GENMASK(22, 18) > +#define RG_HDMITX21_TX_POSDIV GENMASK(27, 26) > +#define RG_HDMITX21_TX_POSDIV_EN BIT(28) > +#define RG_HDMITX21_BIAS_EN BIT(29) > + > +#define HDMI_1_CFG_9 0x24 > +#define RG_HDMITX21_SLDO_VREF_SEL GENMASK(5, 4) > + > +#define HDMI_1_PLL_CFG_0 0x44 > +#define RG_HDMITXPLL_HREN GENMASK(13, 12) > +#define RG_HDMITXPLL_IBAND_FIX_EN BIT(24) > +#define RG_HDMITXPLL_LVR_SEL GENMASK(27, 26) > +#define RG_HDMITXPLL_BP2 BIT(30) > +#define RG_HDMITXPLL_TCL_EN BIT(31) > + > +#define HDMI_1_PLL_CFG_1 0x48 > +#define RG_HDMITXPLL_RESERVE_BIT1_0 GENMASK(1, 0) > +#define RG_HDMITXPLL_RESERVE_BIT3_2 GENMASK(3, 2) > +#define RG_HDMITXPLL_RESERVE_BIT12_11 GENMASK(12, 11) > +#define RG_HDMITXPLL_RESERVE_BIT13 BIT(13) > +#define RG_HDMITXPLL_RESERVE_BIT14 BIT(14) > + > +#define HDMI_1_PLL_CFG_2 0x4c > +#define RG_HDMITXPLL_BC GENMASK(28, 27) > +#define RG_HDMITXPLL_IC GENMASK(26, 22) > +#define RG_HDMITXPLL_BR GENMASK(21, 19) > +#define RG_HDMITXPLL_IR GENMASK(18, 14) > +#define RG_HDMITXPLL_BP GENMASK(13, 10) > +#define RG_HDMITXPLL_HIKVCO BIT(29) > +#define RG_HDMITXPLL_PWD BIT(31) > + > +#define HDMI_1_PLL_CFG_3 0x50 > +#define RG_HDMITXPLL_FBKDIV_LOW GENMASK(31, 0) > + > +#define HDMI_1_PLL_CFG_4 0x54 > +#define DA_HDMITXPLL_ISO_EN BIT(1) > +#define DA_HDMITXPLL_PWR_ON BIT(2) > +#define RG_HDMITXPLL_POSDIV_DIV3_CTRL BIT(21) > +#define RG_HDMITXPLL_POSDIV GENMASK(23, 22) > +#define RG_HDMITXPLL_DIV_CTRL GENMASK(25, 24) > +#define RG_HDMITXPLL_PREDIV GENMASK(29, 28) > +#define RG_HDMITXPLL_FBKDIV_HIGH BIT(31) > + > +#define HDMI_ANA_CTL 0x7c > +#define REG_ANA_HDMI20_FIFO_EN BIT(16) > + > +#define HDMI_CTL_3 0xcc > +#define REG_HDMITXPLL_DIV GENMASK(4, 0) > +#define REG_HDMITX_REF_XTAL_SEL BIT(7) > +#define REG_HDMITX_REF_RESPLL_SEL BIT(9) > +#define REG_PIXEL_CLOCK_SEL BIT(10) > +#define REG_HDMITX_PIXEL_CLOCK BIT(23) > + > +#endif /* MTK_HDMI_PHY_8195_H */ > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c b/drivers/phy/mediatek/phy-mtk-hdmi.c > index 32f713301768..d2e824771f9d 100644 > --- a/drivers/phy/mediatek/phy-mtk-hdmi.c > +++ b/drivers/phy/mediatek/phy-mtk-hdmi.c > @@ -161,6 +161,9 @@ static const struct of_device_id mtk_hdmi_phy_match[] = { > { .compatible = "mediatek,mt8173-hdmi-phy", > .data = &mtk_hdmi_phy_8173_conf, > }, > + { .compatible = "mediatek,mt8195-hdmi-phy", > + .data = &mtk_hdmi_phy_8195_conf, > + }, > {}, > }; > MODULE_DEVICE_TABLE(of, mtk_hdmi_phy_match); > diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.h b/drivers/phy/mediatek/phy-mtk-hdmi.h > index f5aac9d352d8..9dfb725fc57f 100644 > --- a/drivers/phy/mediatek/phy-mtk-hdmi.h > +++ b/drivers/phy/mediatek/phy-mtk-hdmi.h > @@ -44,6 +44,7 @@ struct mtk_hdmi_phy { > > struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw); > > +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf; > extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf; > extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf; > > > -- > b4 0.11.0-dev
diff --git a/drivers/phy/mediatek/Makefile b/drivers/phy/mediatek/Makefile index fb1f8edaffa7..c9a50395533e 100644 --- a/drivers/phy/mediatek/Makefile +++ b/drivers/phy/mediatek/Makefile @@ -12,6 +12,7 @@ obj-$(CONFIG_PHY_MTK_XSPHY) += phy-mtk-xsphy.o phy-mtk-hdmi-drv-y := phy-mtk-hdmi.o phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt2701.o phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8173.o +phy-mtk-hdmi-drv-y += phy-mtk-hdmi-mt8195.o obj-$(CONFIG_PHY_MTK_HDMI) += phy-mtk-hdmi-drv.o phy-mtk-mipi-dsi-drv-y := phy-mtk-mipi-dsi.o diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c new file mode 100644 index 000000000000..48efd3936f29 --- /dev/null +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c @@ -0,0 +1,543 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2022 MediaTek Inc. + * Copyright (c) 2022 BayLibre, SAS + */ +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/types.h> +#include <linux/nvmem-consumer.h> + +#include "phy-mtk-io.h" +#include "phy-mtk-hdmi.h" +#include "phy-mtk-hdmi-mt8195.h" + +static void mtk_hdmi_ana_fifo_en(struct mtk_hdmi_phy *hdmi_phy) +{ + /* make data fifo writable for hdmi2.0 */ + mtk_phy_set_bits(hdmi_phy->regs + HDMI_ANA_CTL, REG_ANA_HDMI20_FIFO_EN); +} + +static void +mtk_mt8195_phy_tmds_high_bit_clk_ratio(struct mtk_hdmi_phy *hdmi_phy, + bool enable) +{ + void __iomem *regs = hdmi_phy->regs; + + mtk_hdmi_ana_fifo_en(hdmi_phy); + + /* HDMI 2.0 specification, 3.4Gbps <= TMDS Bit Rate <= 6G, + * clock bit ratio 1:40, under 3.4Gbps, clock bit ratio 1:10 + */ + if (enable) + mtk_phy_update_field(regs + HDMI20_CLK_CFG, REG_TXC_DIV, REG_TXC_DIV); + else + mtk_phy_clear_bits(regs + HDMI20_CLK_CFG, REG_TXC_DIV); +} + +static void mtk_hdmi_pll_select_source(struct clk_hw *hw) +{ + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); + void __iomem *regs = hdmi_phy->regs; + + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_REF_XTAL_SEL); + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_REF_RESPLL_SEL); + + /* DA_HDMITX21_REF_CK for TXPLL input source */ + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITXPLL_REF_CK_SEL); +} + +static int mtk_hdmi_pll_performance_setting(struct clk_hw *hw) +{ + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); + void __iomem *regs = hdmi_phy->regs; + + /* BP2 */ + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_BP2); + + /* BC */ + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BC); + + /* IC */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IC, 0x1); + + /* BR */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BR, 0x2); + + /* IR */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_IR, 0x2); + + /* BP */ + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_BP); + + /* IBAND_FIX_EN, RESERVE[14] */ + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_IBAND_FIX_EN); + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT14); + + /* HIKVCO */ + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_HIKVCO); + + /* HREN */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_HREN, 0x1); + + /* LVR_SEL */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_LVR_SEL, 0x1); + + /* RG_HDMITXPLL_RESERVE[12:11] */ + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT12_11); + + /* TCL_EN */ + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_0, RG_HDMITXPLL_TCL_EN); + + return 0; +} + +static int mtk_hdmi_pll_set_hw(struct clk_hw *hw, unsigned char prediv, + unsigned char fbkdiv_high, + unsigned long fbkdiv_low, + unsigned char fbkdiv_hs3, unsigned char posdiv1, + unsigned char posdiv2, unsigned char txprediv, + unsigned char txposdiv, + unsigned char digital_div) +{ + unsigned char txposdiv_value = 0; + unsigned char div3_ctrl_value = 0; + unsigned char posdiv_vallue = 0; + unsigned char div_ctrl_value = 0; + unsigned char reserve_3_2_value = 0; + unsigned char prediv_value = 0; + unsigned char reserve13_value = 0; + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); + void __iomem *regs = hdmi_phy->regs; + + mtk_hdmi_pll_select_source(hw); + + mtk_hdmi_pll_performance_setting(hw); + + mtk_phy_update_field(regs + HDMI_1_CFG_10, RG_HDMITX21_BIAS_PE_BG_VREF_SEL, 0x2); + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_VREF_SEL); + mtk_phy_update_field(regs + HDMI_1_CFG_9, RG_HDMITX21_SLDO_VREF_SEL, 0x2); + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BIAS_PE_VREF_SELB); + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDOLPF_EN); + mtk_phy_update_field(regs + HDMI_1_CFG_6, RG_HDMITX21_INTR_CAL, 0x11); + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); + + /* TXPOSDIV */ + txposdiv_value = ilog2(txposdiv); + + mtk_phy_update_field(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV, txposdiv_value); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_EN); + + /* TXPREDIV */ + switch (txprediv) { + case 2: + div3_ctrl_value = 0x0; + posdiv_vallue = 0x0; + break; + case 4: + div3_ctrl_value = 0x0; + posdiv_vallue = 0x1; + break; + case 6: + div3_ctrl_value = 0x1; + posdiv_vallue = 0x0; + break; + case 12: + div3_ctrl_value = 0x1; + posdiv_vallue = 0x1; + break; + default: + return -EINVAL; + } + + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_POSDIV_DIV3_CTRL, div3_ctrl_value); + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_POSDIV, posdiv_vallue ); + + /* POSDIV1 */ + switch (posdiv1) { + case 5: + div_ctrl_value = 0x0; + break; + case 10: + div_ctrl_value = 0x1; + break; + case 12: + div_ctrl_value = 0x2; + break; + case 15: + div_ctrl_value = 0x3; + break; + default: + return -EINVAL; + } + + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_DIV_CTRL, div_ctrl_value); + + /* DE add new setting */ + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT14); + + /* POSDIV2 */ + switch (posdiv2) { + case 1: + reserve_3_2_value = 0x0; + break; + case 2: + reserve_3_2_value = 0x1; + break; + case 4: + reserve_3_2_value = 0x2; + break; + case 6: + reserve_3_2_value = 0x3; + break; + default: + return -EINVAL; + } + + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT3_2, reserve_3_2_value); + + /* DE add new setting */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT1_0, 0x2); + + /* PREDIV */ + prediv_value = ilog2(prediv); + + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_PREDIV, prediv_value); + + /* FBKDIV_HS3 */ + reserve13_value = ilog2(fbkdiv_hs3); + + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_1, RG_HDMITXPLL_RESERVE_BIT13, reserve13_value); + + /* FBDIV */ + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_4, RG_HDMITXPLL_FBKDIV_HIGH, fbkdiv_high); + mtk_phy_update_field(regs + HDMI_1_PLL_CFG_3, RG_HDMITXPLL_FBKDIV_LOW, fbkdiv_low); + + + /* Digital DIVIDER */ + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_PIXEL_CLOCK_SEL); + + if (digital_div == 1) { + mtk_phy_clear_bits(regs + HDMI_CTL_3, REG_HDMITX_PIXEL_CLOCK); + } else { + mtk_phy_set_bits(regs + HDMI_CTL_3, REG_HDMITX_PIXEL_CLOCK); + mtk_phy_update_field(regs + HDMI_CTL_3, REG_HDMITXPLL_DIV, digital_div - 1); + } + + return 0; +} + +#define PCW_DECIMAL_WIDTH 24 + +static int mtk_hdmi_pll_calculate_params(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + int ret; + unsigned long long tmds_clk = 0; + unsigned long long pixel_clk = 0; + /* pll input source frequency */ + unsigned long long da_hdmitx21_ref_ck = 0; + /* ICO output clk */ + unsigned long long ns_hdmipll_ck = 0; + /* source clk for Display digital */ + unsigned long long ad_hdmipll_pixel_ck = 0; + unsigned char digital_div = 0; + unsigned long long pcw = 0; + unsigned char txprediv = 0; + unsigned char txposdiv = 0; + unsigned char fbkdiv_high = 0; + unsigned long fbkdiv_low = 0; + unsigned char posdiv1 = 0; + unsigned char posdiv2 = 0; + /* prediv is always 1 */ + unsigned char prediv = 1; + /* fbkdiv_hs3 is always 1 */ + unsigned char fbkdiv_hs3 = 1; + int i = 0; + unsigned char txpredivs[4] = { 2, 4, 6, 12 }; + + pixel_clk = rate; + tmds_clk = pixel_clk; + + if (tmds_clk < 25000000 || tmds_clk > 594000000) + return -EINVAL; + + /* in Hz */ + da_hdmitx21_ref_ck = 26000000UL; + + /* TXPOSDIV stage treatment: + * 0M < TMDS clk < 54M /8 + * 54M <= TMDS clk < 148.35M /4 + * 148.35M <=TMDS clk < 296.7M /2 + * 296.7 <=TMDS clk <= 594M /1 + */ + if (tmds_clk < 54000000UL) + txposdiv = 8; + else if (tmds_clk >= 54000000UL && tmds_clk < 148350000UL) + txposdiv = 4; + else if (tmds_clk >= 148350000UL && tmds_clk < 296700000UL) + txposdiv = 2; + else if (tmds_clk >= 296700000UL && tmds_clk <= 594000000UL) + txposdiv = 1; + else + return -EINVAL; + + /* calculate txprediv: can be 2, 4, 6, 12 + * ICO clk = 5*TMDS_CLK*TXPOSDIV*TXPREDIV + * ICO clk constraint: 5G =< ICO clk <= 12G + */ + for (i = 0; i < ARRAY_SIZE(txpredivs); i++) { + ns_hdmipll_ck = 5 * tmds_clk * txposdiv * txpredivs[i]; + if (ns_hdmipll_ck >= 5000000000UL && + ns_hdmipll_ck <= 12000000000UL) + break; + } + if (i == (ARRAY_SIZE(txpredivs) - 1) && + (ns_hdmipll_ck < 5000000000UL || ns_hdmipll_ck > 12000000000UL)) { + return -EINVAL; + } + if (i == ARRAY_SIZE(txpredivs)) + return -EINVAL; + + txprediv = txpredivs[i]; + + /* PCW calculation: FBKDIV + * formula: pcw=(frequency_out*2^pcw_bit) / frequency_in / FBKDIV_HS3; + * RG_HDMITXPLL_FBKDIV[32:0]: + * [32,24] 9bit integer, [23,0]:24bit fraction + */ + pcw = ns_hdmipll_ck; + pcw = pcw << PCW_DECIMAL_WIDTH; + pcw = pcw / da_hdmitx21_ref_ck; + pcw = pcw / fbkdiv_hs3; + + if ((pcw / BIT(32)) > 1) { + return -EINVAL; + } else if ((pcw / BIT(32)) == 1) { + fbkdiv_high = 1; + fbkdiv_low = pcw % BIT(32); + } else { + fbkdiv_high = 0; + fbkdiv_low = pcw; + } + + /* posdiv1: + * posdiv1 stage treatment according to color_depth: + * 24bit -> posdiv1 /10, 30bit -> posdiv1 /12.5, + * 36bit -> posdiv1 /15, 48bit -> posdiv1 /10 + */ + posdiv1 = 10; + posdiv2 = 1; + ad_hdmipll_pixel_ck = (ns_hdmipll_ck / 10) / 1; + + /* Digital clk divider, max /32 */ + digital_div = ad_hdmipll_pixel_ck / pixel_clk; + if (!(digital_div <= 32 && digital_div >= 1)) + return -EINVAL; + + ret = mtk_hdmi_pll_set_hw(hw, prediv, fbkdiv_high, fbkdiv_low, + fbkdiv_hs3, posdiv1, posdiv2, txprediv, + txposdiv, digital_div); + if (ret) + return -EINVAL; + + return 0; +} + +static int mtk_hdmi_pll_drv_setting(struct clk_hw *hw) +{ + unsigned char data_channel_bias, clk_channel_bias; + unsigned char impedance, impedance_en; + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); + unsigned long tmds_clk; + unsigned long pixel_clk = hdmi_phy->pll_rate; + void __iomem *regs = hdmi_phy->regs; + + tmds_clk = pixel_clk; + + /* bias & impedance setting: + * 3G < data rate <= 6G: enable impedance 100ohm, + * data channel bias 24mA, clock channel bias 20mA + * pixel clk >= HD, 74.175MHZ <= pixel clk <= 300MHZ: + * enalbe impedance 100ohm + * data channel 20mA, clock channel 16mA + * 27M =< pixel clk < 74.175: disable impedance + * data channel & clock channel bias 10mA + */ + + /* 3G < data rate <= 6G, 300M < tmds rate <= 594M */ + if (tmds_clk > 300000000UL && tmds_clk <= 594000000UL) { + data_channel_bias = 0x3c; /* 24mA */ + clk_channel_bias = 0x34; /* 20mA */ + impedance_en = 0xf; + impedance = 0x36; /* 100ohm */ + } else if (pixel_clk >= 74175000UL && pixel_clk <= 300000000UL) { + data_channel_bias = 0x34; /* 20mA */ + clk_channel_bias = 0x2c; /* 16mA */ + impedance_en = 0xf; + impedance = 0x36; /* 100ohm */ + } else if (pixel_clk >= 27000000UL && pixel_clk < 74175000UL) { + data_channel_bias = 0x14; /* 10mA */ + clk_channel_bias = 0x14; /* 10mA */ + impedance_en = 0x0; + impedance = 0x0; + } else { + return -EINVAL; + } + + /* bias */ + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D0, data_channel_bias); + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D1, data_channel_bias); + mtk_phy_update_field(regs + HDMI_1_CFG_1, RG_HDMITX21_DRV_IBIAS_D2, data_channel_bias); + mtk_phy_update_field(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_IBIAS_CLK, clk_channel_bias); + + /* impedance */ + mtk_phy_update_field(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_IMP_EN, impedance_en); + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D0_EN1, impedance); + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D1_EN1, impedance); + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D2_EN1, impedance); + mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_CLK_EN1, impedance); + + return 0; +} + +static int mtk_hdmi_pll_prepare(struct clk_hw *hw) +{ + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); + void __iomem *regs = hdmi_phy->regs; + + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_TX_POSDIV_EN); + + mtk_phy_set_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_SER_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D0_DRV_OP_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D1_DRV_OP_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_D2_DRV_OP_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_CK_DRV_OP_EN); + + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D0_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D1_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_D2_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_FRL_CK_EN); + + mtk_hdmi_pll_drv_setting(hw); + + mtk_phy_clear_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD); + mtk_phy_set_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN); + mtk_phy_set_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN); + + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_PWR_ON); + usleep_range(5, 10); + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_ISO_EN); + usleep_range(5, 10); + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); + usleep_range(30, 50); + 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 *regs = hdmi_phy->regs; + + mtk_phy_set_bits(regs + HDMI_1_CFG_10, RG_HDMITX21_BG_PWD); + mtk_phy_clear_bits(regs + HDMI_1_CFG_6, RG_HDMITX21_BIAS_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_CKLDO_EN); + mtk_phy_clear_bits(regs + HDMI_1_CFG_3, RG_HDMITX21_SLDO_EN); + + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_2, RG_HDMITXPLL_PWD); + usleep_range(10, 20); + mtk_phy_set_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_ISO_EN); + usleep_range(10, 20); + mtk_phy_clear_bits(regs + HDMI_1_PLL_CFG_4, DA_HDMITXPLL_PWR_ON); +} + +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); + + dev_dbg(hdmi_phy->dev, "%s: %lu Hz, parent: %lu Hz\n", __func__, rate, + parent_rate); + + return mtk_hdmi_pll_calculate_params(hw, rate, parent_rate); +} + +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; + return rate; +} + +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_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 vtx_signal_en(struct mtk_hdmi_phy *hdmi_phy, bool on) +{ + void __iomem *regs = hdmi_phy->regs; + + if (on) + mtk_phy_set_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_EN); + else + mtk_phy_clear_bits(regs + HDMI_1_CFG_0, RG_HDMITX21_DRV_EN); +} + +static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy) +{ + vtx_signal_en(hdmi_phy, true); + usleep_range(100, 150); +} + +static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) +{ + vtx_signal_en(hdmi_phy, false); +} + +static int mtk_hdmi_phy_configure(struct phy *phy, union phy_configure_opts *opts) +{ + struct phy_configure_opts_dp *dp_opts = &opts->dp; + struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(phy); + int ret = 0; + + ret = clk_set_rate(hdmi_phy->pll, dp_opts->link_rate); + + if (ret) + return ret; + + mtk_mt8195_phy_tmds_high_bit_clk_ratio(hdmi_phy, false); + + return ret; +} + +struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf = { + .flags = CLK_SET_RATE_PARENT | CLK_SET_RATE_GATE, + .hdmi_phy_clk_ops = &mtk_hdmi_pll_ops, + .hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds, + .hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds, + .hdmi_phy_configure = mtk_hdmi_phy_configure, +}; + +MODULE_AUTHOR("Can Zeng <can.zeng@mediatek.com>"); +MODULE_DESCRIPTION("MediaTek MT8195 HDMI PHY Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h new file mode 100644 index 000000000000..2c139f57ab91 --- /dev/null +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h @@ -0,0 +1,109 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2022 MediaTek Inc. + * Copyright (c) 2022 BayLibre, SAS + */ + +#ifndef _MTK_HDMI_PHY_8195_H +#define _MTK_HDMI_PHY_8195_H + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/types.h> + +#define HDMI20_CLK_CFG 0x70 +#define REG_TXC_DIV GENMASK(31, 30) + +#define HDMI_1_CFG_0 0x00 +#define RG_HDMITX21_DRV_IBIAS_CLK GENMASK(10, 5) +#define RG_HDMITX21_DRV_IMP_EN GENMASK(23, 20) +#define RG_HDMITX21_DRV_EN GENMASK(27, 24) +#define RG_HDMITX21_SER_EN GENMASK(31, 28) + +#define HDMI_1_CFG_1 0x04 +#define RG_HDMITX21_DRV_IBIAS_D0 GENMASK(19, 14) +#define RG_HDMITX21_DRV_IBIAS_D1 GENMASK(25, 20) +#define RG_HDMITX21_DRV_IBIAS_D2 GENMASK(31, 26) + +#define HDMI_1_CFG_10 0x40 +#define RG_HDMITXPLL_REF_CK_SEL GENMASK(2, 1) +#define RG_HDMITX21_VREF_SEL BIT(4) +#define RG_HDMITX21_BIAS_PE_VREF_SELB BIT(10) +#define RG_HDMITX21_BIAS_PE_BG_VREF_SEL GENMASK(16, 15) +#define RG_HDMITX21_BG_PWD BIT(20) + +#define HDMI_1_CFG_2 0x08 +#define RG_HDMITX21_DRV_IMP_D0_EN1 GENMASK(13, 8) +#define RG_HDMITX21_DRV_IMP_D1_EN1 GENMASK(19, 14) +#define RG_HDMITX21_DRV_IMP_D2_EN1 GENMASK(25, 20) +#define RG_HDMITX21_DRV_IMP_CLK_EN1 GENMASK(31, 26) + +#define HDMI_1_CFG_3 0x0c +#define RG_HDMITX21_CKLDO_EN BIT(3) +#define RG_HDMITX21_SLDOLPF_EN BIT(7) +#define RG_HDMITX21_SLDO_EN GENMASK(11, 8) + +#define HDMI_1_CFG_6 0x18 +#define RG_HDMITX21_D2_DRV_OP_EN BIT(8) +#define RG_HDMITX21_D1_DRV_OP_EN BIT(9) +#define RG_HDMITX21_D0_DRV_OP_EN BIT(10) +#define RG_HDMITX21_CK_DRV_OP_EN BIT(11) +#define RG_HDMITX21_FRL_EN BIT(12) +#define RG_HDMITX21_FRL_CK_EN BIT(13) +#define RG_HDMITX21_FRL_D0_EN BIT(14) +#define RG_HDMITX21_FRL_D1_EN BIT(15) +#define RG_HDMITX21_FRL_D2_EN BIT(16) +#define RG_HDMITX21_INTR_CAL GENMASK(22, 18) +#define RG_HDMITX21_TX_POSDIV GENMASK(27, 26) +#define RG_HDMITX21_TX_POSDIV_EN BIT(28) +#define RG_HDMITX21_BIAS_EN BIT(29) + +#define HDMI_1_CFG_9 0x24 +#define RG_HDMITX21_SLDO_VREF_SEL GENMASK(5, 4) + +#define HDMI_1_PLL_CFG_0 0x44 +#define RG_HDMITXPLL_HREN GENMASK(13, 12) +#define RG_HDMITXPLL_IBAND_FIX_EN BIT(24) +#define RG_HDMITXPLL_LVR_SEL GENMASK(27, 26) +#define RG_HDMITXPLL_BP2 BIT(30) +#define RG_HDMITXPLL_TCL_EN BIT(31) + +#define HDMI_1_PLL_CFG_1 0x48 +#define RG_HDMITXPLL_RESERVE_BIT1_0 GENMASK(1, 0) +#define RG_HDMITXPLL_RESERVE_BIT3_2 GENMASK(3, 2) +#define RG_HDMITXPLL_RESERVE_BIT12_11 GENMASK(12, 11) +#define RG_HDMITXPLL_RESERVE_BIT13 BIT(13) +#define RG_HDMITXPLL_RESERVE_BIT14 BIT(14) + +#define HDMI_1_PLL_CFG_2 0x4c +#define RG_HDMITXPLL_BC GENMASK(28, 27) +#define RG_HDMITXPLL_IC GENMASK(26, 22) +#define RG_HDMITXPLL_BR GENMASK(21, 19) +#define RG_HDMITXPLL_IR GENMASK(18, 14) +#define RG_HDMITXPLL_BP GENMASK(13, 10) +#define RG_HDMITXPLL_HIKVCO BIT(29) +#define RG_HDMITXPLL_PWD BIT(31) + +#define HDMI_1_PLL_CFG_3 0x50 +#define RG_HDMITXPLL_FBKDIV_LOW GENMASK(31, 0) + +#define HDMI_1_PLL_CFG_4 0x54 +#define DA_HDMITXPLL_ISO_EN BIT(1) +#define DA_HDMITXPLL_PWR_ON BIT(2) +#define RG_HDMITXPLL_POSDIV_DIV3_CTRL BIT(21) +#define RG_HDMITXPLL_POSDIV GENMASK(23, 22) +#define RG_HDMITXPLL_DIV_CTRL GENMASK(25, 24) +#define RG_HDMITXPLL_PREDIV GENMASK(29, 28) +#define RG_HDMITXPLL_FBKDIV_HIGH BIT(31) + +#define HDMI_ANA_CTL 0x7c +#define REG_ANA_HDMI20_FIFO_EN BIT(16) + +#define HDMI_CTL_3 0xcc +#define REG_HDMITXPLL_DIV GENMASK(4, 0) +#define REG_HDMITX_REF_XTAL_SEL BIT(7) +#define REG_HDMITX_REF_RESPLL_SEL BIT(9) +#define REG_PIXEL_CLOCK_SEL BIT(10) +#define REG_HDMITX_PIXEL_CLOCK BIT(23) + +#endif /* MTK_HDMI_PHY_8195_H */ diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c b/drivers/phy/mediatek/phy-mtk-hdmi.c index 32f713301768..d2e824771f9d 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi.c +++ b/drivers/phy/mediatek/phy-mtk-hdmi.c @@ -161,6 +161,9 @@ static const struct of_device_id mtk_hdmi_phy_match[] = { { .compatible = "mediatek,mt8173-hdmi-phy", .data = &mtk_hdmi_phy_8173_conf, }, + { .compatible = "mediatek,mt8195-hdmi-phy", + .data = &mtk_hdmi_phy_8195_conf, + }, {}, }; MODULE_DEVICE_TABLE(of, mtk_hdmi_phy_match); diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.h b/drivers/phy/mediatek/phy-mtk-hdmi.h index f5aac9d352d8..9dfb725fc57f 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi.h +++ b/drivers/phy/mediatek/phy-mtk-hdmi.h @@ -44,6 +44,7 @@ struct mtk_hdmi_phy { struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw); +extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8195_conf; extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf; extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf;
Add basic support for the mediatek hdmi phy on MT8195 SoC Signed-off-by: Guillaume Ranquet <granquet@baylibre.com> --- drivers/phy/mediatek/Makefile | 1 + drivers/phy/mediatek/phy-mtk-hdmi-mt8195.c | 543 +++++++++++++++++++++++++++++ drivers/phy/mediatek/phy-mtk-hdmi-mt8195.h | 109 ++++++ drivers/phy/mediatek/phy-mtk-hdmi.c | 3 + drivers/phy/mediatek/phy-mtk-hdmi.h | 1 + 5 files changed, 657 insertions(+)