| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Neil Armstrong | 3870 | 100.00% | 6 | 100.00% |
| Total | 3870 | 6 |
/* * Copyright (C) 2016 BayLibre, SAS * Author: Neil Armstrong <narmstrong@baylibre.com> * Copyright (C) 2015 Amlogic, Inc. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see <http://www.gnu.org/licenses/>. */ #include <linux/kernel.h> #include <linux/module.h> #include <drm/drmP.h> #include "meson_drv.h" #include "meson_vclk.h" /** * DOC: Video Clocks * * VCLK is the "Pixel Clock" frequency generator from a dedicated PLL. * We handle the following encodings : * * - CVBS 27MHz generator via the VCLK2 to the VENCI and VDAC blocks * - HDMI Pixel Clocks generation * * What is missing : * * - Genenate Pixel clocks for 2K/4K 10bit formats * * Clock generator scheme : * * .. code:: * * __________ _________ _____ * | | | | | |--ENCI * | HDMI PLL |-| PLL_DIV |--- VCLK--| |--ENCL * |__________| |_________| \ | MUX |--ENCP * --VCLK2-| |--VDAC * |_____|--HDMI-TX * * Final clocks can take input for either VCLK or VCLK2, but * VCLK is the preferred path for HDMI clocking and VCLK2 is the * preferred path for CVBS VDAC clocking. * * VCLK and VCLK2 have fixed divided clocks paths for /1, /2, /4, /6 or /12. * * The PLL_DIV can achieve an additional fractional dividing like * 1.5, 3.5, 3.75... to generate special 2K and 4K 10bit clocks. */ /* HHI Registers */ #define HHI_VID_PLL_CLK_DIV 0x1a0 /* 0x68 offset in data sheet */ #define VID_PLL_EN BIT(19) #define VID_PLL_BYPASS BIT(18) #define VID_PLL_PRESET BIT(15) #define HHI_VIID_CLK_DIV 0x128 /* 0x4a offset in data sheet */ #define VCLK2_DIV_MASK 0xff #define VCLK2_DIV_EN BIT(16) #define VCLK2_DIV_RESET BIT(17) #define CTS_VDAC_SEL_MASK (0xf << 28) #define CTS_VDAC_SEL_SHIFT 28 #define HHI_VIID_CLK_CNTL 0x12c /* 0x4b offset in data sheet */ #define VCLK2_EN BIT(19) #define VCLK2_SEL_MASK (0x7 << 16) #define VCLK2_SEL_SHIFT 16 #define VCLK2_SOFT_RESET BIT(15) #define VCLK2_DIV1_EN BIT(0) #define HHI_VID_CLK_DIV 0x164 /* 0x59 offset in data sheet */ #define VCLK_DIV_MASK 0xff #define VCLK_DIV_EN BIT(16) #define VCLK_DIV_RESET BIT(17) #define CTS_ENCP_SEL_MASK (0xf << 24) #define CTS_ENCP_SEL_SHIFT 24 #define CTS_ENCI_SEL_MASK (0xf << 28) #define CTS_ENCI_SEL_SHIFT 28 #define HHI_VID_CLK_CNTL 0x17c /* 0x5f offset in data sheet */ #define VCLK_EN BIT(19) #define VCLK_SEL_MASK (0x7 << 16) #define VCLK_SEL_SHIFT 16 #define VCLK_SOFT_RESET BIT(15) #define VCLK_DIV1_EN BIT(0) #define VCLK_DIV2_EN BIT(1) #define VCLK_DIV4_EN BIT(2) #define VCLK_DIV6_EN BIT(3) #define VCLK_DIV12_EN BIT(4) #define HHI_VID_CLK_CNTL2 0x194 /* 0x65 offset in data sheet */ #define CTS_ENCI_EN BIT(0) #define CTS_ENCP_EN BIT(2) #define CTS_VDAC_EN BIT(4) #define HDMI_TX_PIXEL_EN BIT(5) #define HHI_HDMI_CLK_CNTL 0x1cc /* 0x73 offset in data sheet */ #define HDMI_TX_PIXEL_SEL_MASK (0xf << 16) #define HDMI_TX_PIXEL_SEL_SHIFT 16 #define CTS_HDMI_SYS_SEL_MASK (0x7 << 9) #define CTS_HDMI_SYS_DIV_MASK (0x7f) #define CTS_HDMI_SYS_EN BIT(8) #define HHI_VDAC_CNTL0 0x2F4 /* 0xbd offset in data sheet */ #define HHI_VDAC_CNTL1 0x2F8 /* 0xbe offset in data sheet */ #define HHI_HDMI_PLL_CNTL 0x320 /* 0xc8 offset in data sheet */ #define HHI_HDMI_PLL_CNTL2 0x324 /* 0xc9 offset in data sheet */ #define HHI_HDMI_PLL_CNTL3 0x328 /* 0xca offset in data sheet */ #define HHI_HDMI_PLL_CNTL4 0x32C /* 0xcb offset in data sheet */ #define HHI_HDMI_PLL_CNTL5 0x330 /* 0xcc offset in data sheet */ #define HHI_HDMI_PLL_CNTL6 0x334 /* 0xcd offset in data sheet */ #define HDMI_PLL_RESET BIT(28) #define HDMI_PLL_LOCK BIT(31) #define FREQ_1000_1001(_freq) DIV_ROUND_CLOSEST(_freq * 1000, 1001) /* VID PLL Dividers */ enum { VID_PLL_DIV_1 = 0, VID_PLL_DIV_2, VID_PLL_DIV_2p5, VID_PLL_DIV_3, VID_PLL_DIV_3p5, VID_PLL_DIV_3p75, VID_PLL_DIV_4, VID_PLL_DIV_5, VID_PLL_DIV_6, VID_PLL_DIV_6p25, VID_PLL_DIV_7, VID_PLL_DIV_7p5, VID_PLL_DIV_12, VID_PLL_DIV_14, VID_PLL_DIV_15, }; void meson_vid_pll_set(struct meson_drm *priv, unsigned int div) { unsigned int shift_val = 0; unsigned int shift_sel = 0; /* Disable vid_pll output clock */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, 0); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0); switch (div) { case VID_PLL_DIV_2: shift_val = 0x0aaa; shift_sel = 0; break; case VID_PLL_DIV_2p5: shift_val = 0x5294; shift_sel = 2; break; case VID_PLL_DIV_3: shift_val = 0x0db6; shift_sel = 0; break; case VID_PLL_DIV_3p5: shift_val = 0x36cc; shift_sel = 1; break; case VID_PLL_DIV_3p75: shift_val = 0x6666; shift_sel = 2; break; case VID_PLL_DIV_4: shift_val = 0x0ccc; shift_sel = 0; break; case VID_PLL_DIV_5: shift_val = 0x739c; shift_sel = 2; break; case VID_PLL_DIV_6: shift_val = 0x0e38; shift_sel = 0; break; case VID_PLL_DIV_6p25: shift_val = 0x0000; shift_sel = 3; break; case VID_PLL_DIV_7: shift_val = 0x3c78; shift_sel = 1; break; case VID_PLL_DIV_7p5: shift_val = 0x78f0; shift_sel = 2; break; case VID_PLL_DIV_12: shift_val = 0x0fc0; shift_sel = 0; break; case VID_PLL_DIV_14: shift_val = 0x3f80; shift_sel = 1; break; case VID_PLL_DIV_15: shift_val = 0x7f80; shift_sel = 2; break; } if (div == VID_PLL_DIV_1) /* Enable vid_pll bypass to HDMI pll */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_BYPASS, VID_PLL_BYPASS); else { /* Disable Bypass */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_BYPASS, 0); /* Clear sel */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, 3 << 16, 0); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, 0x7fff, 0); /* Setup sel and val */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, 3 << 16, shift_sel << 16); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, VID_PLL_PRESET); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, 0x7fff, shift_val); regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0); } /* Enable the vid_pll output clock */ regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, VID_PLL_EN); } /* * Setup VCLK2 for 27MHz, and enable clocks for ENCI and VDAC * * TOFIX: Refactor into table to also handle HDMI frequency and paths */ static void meson_venci_cvbs_clock_config(struct meson_drm *priv) { unsigned int val; /* Setup PLL to output 1.485GHz */ if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00404e00); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4800023d); } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) { regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0xa6212844); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c4d000c); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500); /* Reset PLL */ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, HDMI_PLL_RESET, HDMI_PLL_RESET); regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, HDMI_PLL_RESET, 0); } /* Poll for lock bit */ regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val, (val & HDMI_PLL_LOCK), 10, 0); /* Disable VCLK2 */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, 0); /* Setup vid_pll to /1 */ meson_vid_pll_set(priv, VID_PLL_DIV_1); /* Setup the VCLK2 divider value to achieve 27MHz */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, VCLK2_DIV_MASK, (55 - 1)); /* select vid_pll for vclk2 */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_SEL_MASK, (4 << VCLK2_SEL_SHIFT)); /* enable vclk2 gate */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, VCLK2_EN); /* select vclk_div1 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, (8 << CTS_ENCI_SEL_SHIFT)); /* select vclk_div1 for vdac */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, CTS_VDAC_SEL_MASK, (8 << CTS_VDAC_SEL_SHIFT)); /* release vclk2_div_reset and enable vclk2_div */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV, VCLK2_DIV_EN | VCLK2_DIV_RESET, VCLK2_DIV_EN); /* enable vclk2_div1 gate */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_DIV1_EN, VCLK2_DIV1_EN); /* reset vclk2 */ regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_SOFT_RESET, VCLK2_SOFT_RESET); regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_SOFT_RESET, 0); /* enable enci_clk */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, CTS_ENCI_EN, CTS_ENCI_EN); /* enable vdac_clk */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, CTS_VDAC_EN, CTS_VDAC_EN); } enum { /* PLL O1 O2 O3 VP DV EN TX */ /* 4320 /4 /4 /1 /5 /1 => /2 /2 */ MESON_VCLK_HDMI_ENCI_54000 = 0, /* 4320 /4 /4 /1 /5 /1 => /1 /2 */ MESON_VCLK_HDMI_DDR_54000, /* 2970 /4 /1 /1 /5 /1 => /1 /2 */ MESON_VCLK_HDMI_DDR_148500, /* 2970 /2 /2 /2 /5 /1 => /1 /1 */ MESON_VCLK_HDMI_74250, /* 2970 /1 /2 /2 /5 /1 => /1 /1 */ MESON_VCLK_HDMI_148500, /* 2970 /1 /1 /1 /5 /2 => /1 /1 */ MESON_VCLK_HDMI_297000, /* 5940 /1 /1 /2 /5 /1 => /1 /1 */ MESON_VCLK_HDMI_594000 }; struct meson_vclk_params { unsigned int pixel_freq; unsigned int pll_base_freq; unsigned int pll_od1; unsigned int pll_od2; unsigned int pll_od3; unsigned int vid_pll_div; unsigned int vclk_div; } params[] = { [MESON_VCLK_HDMI_ENCI_54000] = { .pixel_freq = 54000, .pll_base_freq = 4320000, .pll_od1 = 4, .pll_od2 = 4, .pll_od3 = 1, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, [MESON_VCLK_HDMI_DDR_54000] = { .pixel_freq = 54000, .pll_base_freq = 4320000, .pll_od1 = 4, .pll_od2 = 4, .pll_od3 = 1, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, [MESON_VCLK_HDMI_DDR_148500] = { .pixel_freq = 148500, .pll_base_freq = 2970000, .pll_od1 = 4, .pll_od2 = 1, .pll_od3 = 1, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, [MESON_VCLK_HDMI_74250] = { .pixel_freq = 74250, .pll_base_freq = 2970000, .pll_od1 = 2, .pll_od2 = 2, .pll_od3 = 2, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, [MESON_VCLK_HDMI_148500] = { .pixel_freq = 148500, .pll_base_freq = 2970000, .pll_od1 = 1, .pll_od2 = 2, .pll_od3 = 2, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, [MESON_VCLK_HDMI_297000] = { .pixel_freq = 297000, .pll_base_freq = 2970000, .pll_od1 = 1, .pll_od2 = 1, .pll_od3 = 1, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 2, }, [MESON_VCLK_HDMI_594000] = { .pixel_freq = 594000, .pll_base_freq = 5940000, .pll_od1 = 1, .pll_od2 = 1, .pll_od3 = 2, .vid_pll_div = VID_PLL_DIV_5, .vclk_div = 1, }, { /* sentinel */ }, }; static inline unsigned int pll_od_to_reg(unsigned int od) { switch (od) { case 1: return 0; case 2: return 1; case 4: return 2; case 8: return 3; } /* Invalid */ return 0; } void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m, unsigned int frac, unsigned int od1, unsigned int od2, unsigned int od3) { unsigned int val; if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x58000200 | m); if (frac) regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00004000 | frac); else regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00000000); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55); /* Enable and unreset */ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, 0x7 << 28, 0x4 << 28); /* Poll for lock bit */ regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val, (val & HDMI_PLL_LOCK), 10, 0); } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) { regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x40000200 | m); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb000 | frac); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729); regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500); /* Reset PLL */ regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, HDMI_PLL_RESET, HDMI_PLL_RESET); regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL, HDMI_PLL_RESET, 0); /* Poll for lock bit */ regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val, (val & HDMI_PLL_LOCK), 10, 0); } if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, 3 << 16, pll_od_to_reg(od1) << 16); else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, 3 << 21, pll_od_to_reg(od1) << 21); if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, 3 << 22, pll_od_to_reg(od2) << 22); else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, 3 << 23, pll_od_to_reg(od2) << 23); if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2, 3 << 18, pll_od_to_reg(od3) << 18); else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3, 3 << 19, pll_od_to_reg(od3) << 19); } #define XTAL_FREQ 24000 static unsigned int meson_hdmi_pll_get_m(struct meson_drm *priv, unsigned int pll_freq) { /* The GXBB PLL has a /2 pre-multiplier */ if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) pll_freq /= 2; return pll_freq / XTAL_FREQ; } #define HDMI_FRAC_MAX_GXBB 4096 #define HDMI_FRAC_MAX_GXL 1024 static unsigned int meson_hdmi_pll_get_frac(struct meson_drm *priv, unsigned int m, unsigned int pll_freq) { unsigned int parent_freq = XTAL_FREQ; unsigned int frac_max = HDMI_FRAC_MAX_GXL; unsigned int frac_m; unsigned int frac; /* The GXBB PLL has a /2 pre-multiplier and a larger FRAC width */ if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { frac_max = HDMI_FRAC_MAX_GXBB; parent_freq *= 2; } /* We can have a perfect match !*/ if (pll_freq / m == parent_freq && pll_freq % m == 0) return 0; frac = div_u64((u64)pll_freq * (u64)frac_max, parent_freq); frac_m = m * frac_max; if (frac_m > frac) return frac_max; frac -= frac_m; return min((u16)frac, (u16)(frac_max - 1)); } static bool meson_hdmi_pll_validate_params(struct meson_drm *priv, unsigned int m, unsigned int frac) { if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { /* Empiric supported min/max dividers */ if (m < 53 || m > 123) return false; if (frac >= HDMI_FRAC_MAX_GXBB) return false; } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) { /* Empiric supported min/max dividers */ if (m < 106 || m > 247) return false; if (frac >= HDMI_FRAC_MAX_GXL) return false; } return true; } static bool meson_hdmi_pll_find_params(struct meson_drm *priv, unsigned int freq, unsigned int *m, unsigned int *frac, unsigned int *od) { /* Cycle from /16 to /2 */ for (*od = 16 ; *od > 1 ; *od >>= 1) { *m = meson_hdmi_pll_get_m(priv, freq * *od); if (!*m) continue; *frac = meson_hdmi_pll_get_frac(priv, *m, freq * *od); DRM_DEBUG_DRIVER("PLL params for %dkHz: m=%x frac=%x od=%d\n", freq, *m, *frac, *od); if (meson_hdmi_pll_validate_params(priv, *m, *frac)) return true; } return false; } /* pll_freq is the frequency after the OD dividers */ enum drm_mode_status meson_vclk_dmt_supported_freq(struct meson_drm *priv, unsigned int freq) { unsigned int od, m, frac; /* In DMT mode, path after PLL is always /10 */ freq *= 10; if (meson_hdmi_pll_find_params(priv, freq, &m, &frac, &od)) return MODE_OK; return MODE_CLOCK_RANGE; } EXPORT_SYMBOL_GPL(meson_vclk_dmt_supported_freq); /* pll_freq is the frequency after the OD dividers */ static void meson_hdmi_pll_generic_set(struct meson_drm *priv, unsigned int pll_freq) { unsigned int od, m, frac, od1, od2, od3; if (meson_hdmi_pll_find_params(priv, pll_freq, &m, &frac, &od)) { od3 = 1; if (od < 4) { od1 = 2; od2 = 1; } else { od2 = od / 4; od1 = od / od2; } DRM_DEBUG_DRIVER("PLL params for %dkHz: m=%x frac=%x od=%d/%d/%d\n", pll_freq, m, frac, od1, od2, od3); meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3); return; } DRM_ERROR("Fatal, unable to find parameters for PLL freq %d\n", pll_freq); } enum drm_mode_status meson_vclk_vic_supported_freq(unsigned int freq) { int i; DRM_DEBUG_DRIVER("freq = %d\n", freq); for (i = 0 ; params[i].pixel_freq ; ++i) { DRM_DEBUG_DRIVER("i = %d pixel_freq = %d alt = %d\n", i, params[i].pixel_freq, FREQ_1000_1001(params[i].pixel_freq)); /* Match strict frequency */ if (freq == params[i].pixel_freq) return MODE_OK; /* Match 1000/1001 variant */ if (freq == FREQ_1000_1001(params[i].pixel_freq)) return MODE_OK; } return MODE_CLOCK_RANGE; } EXPORT_SYMBOL_GPL(meson_vclk_vic_supported_freq); static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq, unsigned int od1, unsigned int od2, unsigned int od3, unsigned int vid_pll_div, unsigned int vclk_div, unsigned int hdmi_tx_div, unsigned int venc_div, bool hdmi_use_enci, bool vic_alternate_clock) { unsigned int m = 0, frac = 0; /* Set HDMI-TX sys clock */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, CTS_HDMI_SYS_SEL_MASK, 0); regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, CTS_HDMI_SYS_DIV_MASK, 0); regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, CTS_HDMI_SYS_EN, CTS_HDMI_SYS_EN); /* Set HDMI PLL rate */ if (!od1 && !od2 && !od3) { meson_hdmi_pll_generic_set(priv, pll_base_freq); } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) { switch (pll_base_freq) { case 2970000: m = 0x3d; frac = vic_alternate_clock ? 0xd02 : 0xe00; break; case 4320000: m = vic_alternate_clock ? 0x59 : 0x5a; frac = vic_alternate_clock ? 0xe8f : 0; break; case 5940000: m = 0x7b; frac = vic_alternate_clock ? 0xa05 : 0xc00; break; } meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3); } else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") || meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) { switch (pll_base_freq) { case 2970000: m = 0x7b; frac = vic_alternate_clock ? 0x281 : 0x300; break; case 4320000: m = vic_alternate_clock ? 0xb3 : 0xb4; frac = vic_alternate_clock ? 0x347 : 0; break; case 5940000: m = 0xf7; frac = vic_alternate_clock ? 0x102 : 0x200; break; } meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3); } /* Setup vid_pll divider */ meson_vid_pll_set(priv, vid_pll_div); /* Set VCLK div */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_SEL_MASK, 0); regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, VCLK_DIV_MASK, vclk_div - 1); /* Set HDMI-TX source */ switch (hdmi_tx_div) { case 1: /* enable vclk_div1 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV1_EN, VCLK_DIV1_EN); /* select vclk_div1 for HDMI-TX */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, HDMI_TX_PIXEL_SEL_MASK, 0); break; case 2: /* enable vclk_div2 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV2_EN, VCLK_DIV2_EN); /* select vclk_div2 for HDMI-TX */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, HDMI_TX_PIXEL_SEL_MASK, 1 << HDMI_TX_PIXEL_SEL_SHIFT); break; case 4: /* enable vclk_div4 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV4_EN, VCLK_DIV4_EN); /* select vclk_div4 for HDMI-TX */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, HDMI_TX_PIXEL_SEL_MASK, 2 << HDMI_TX_PIXEL_SEL_SHIFT); break; case 6: /* enable vclk_div6 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV6_EN, VCLK_DIV6_EN); /* select vclk_div6 for HDMI-TX */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, HDMI_TX_PIXEL_SEL_MASK, 3 << HDMI_TX_PIXEL_SEL_SHIFT); break; case 12: /* enable vclk_div12 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV12_EN, VCLK_DIV12_EN); /* select vclk_div12 for HDMI-TX */ regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL, HDMI_TX_PIXEL_SEL_MASK, 4 << HDMI_TX_PIXEL_SEL_SHIFT); break; } regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, HDMI_TX_PIXEL_EN, HDMI_TX_PIXEL_EN); /* Set ENCI/ENCP Source */ switch (venc_div) { case 1: /* enable vclk_div1 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV1_EN, VCLK_DIV1_EN); if (hdmi_use_enci) /* select vclk_div1 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, 0); else /* select vclk_div1 for encp */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCP_SEL_MASK, 0); break; case 2: /* enable vclk_div2 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV2_EN, VCLK_DIV2_EN); if (hdmi_use_enci) /* select vclk_div2 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, 1 << CTS_ENCI_SEL_SHIFT); else /* select vclk_div2 for encp */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCP_SEL_MASK, 1 << CTS_ENCP_SEL_SHIFT); break; case 4: /* enable vclk_div4 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV4_EN, VCLK_DIV4_EN); if (hdmi_use_enci) /* select vclk_div4 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, 2 << CTS_ENCI_SEL_SHIFT); else /* select vclk_div4 for encp */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCP_SEL_MASK, 2 << CTS_ENCP_SEL_SHIFT); break; case 6: /* enable vclk_div6 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV6_EN, VCLK_DIV6_EN); if (hdmi_use_enci) /* select vclk_div6 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, 3 << CTS_ENCI_SEL_SHIFT); else /* select vclk_div6 for encp */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCP_SEL_MASK, 3 << CTS_ENCP_SEL_SHIFT); break; case 12: /* enable vclk_div12 gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_DIV12_EN, VCLK_DIV12_EN); if (hdmi_use_enci) /* select vclk_div12 for enci */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCI_SEL_MASK, 4 << CTS_ENCI_SEL_SHIFT); else /* select vclk_div12 for encp */ regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV, CTS_ENCP_SEL_MASK, 4 << CTS_ENCP_SEL_SHIFT); break; } if (hdmi_use_enci) /* Enable ENCI clock gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, CTS_ENCI_EN, CTS_ENCI_EN); else /* Enable ENCP clock gate */ regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2, CTS_ENCP_EN, CTS_ENCP_EN); regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_EN, VCLK_EN); } void meson_vclk_setup(struct meson_drm *priv, unsigned int target, unsigned int vclk_freq, unsigned int venc_freq, unsigned int dac_freq, bool hdmi_use_enci) { bool vic_alternate_clock = false; unsigned int freq; unsigned int hdmi_tx_div; unsigned int venc_div; if (target == MESON_VCLK_TARGET_CVBS) { meson_venci_cvbs_clock_config(priv); return; } else if (target == MESON_VCLK_TARGET_DMT) { /* The DMT clock path is fixed after the PLL: * - automatic PLL freq + OD management * - vid_pll_div = VID_PLL_DIV_5 * - vclk_div = 2 * - hdmi_tx_div = 1 * - venc_div = 1 * - encp encoder */ meson_vclk_set(priv, vclk_freq * 10, 0, 0, 0, VID_PLL_DIV_5, 2, 1, 1, false, false); return; } hdmi_tx_div = vclk_freq / dac_freq; if (hdmi_tx_div == 0) { pr_err("Fatal Error, invalid HDMI-TX freq %d\n", dac_freq); return; } venc_div = vclk_freq / venc_freq; if (venc_div == 0) { pr_err("Fatal Error, invalid HDMI venc freq %d\n", venc_freq); return; } for (freq = 0 ; params[freq].pixel_freq ; ++freq) { if (vclk_freq == params[freq].pixel_freq || vclk_freq == FREQ_1000_1001(params[freq].pixel_freq)) { if (vclk_freq != params[freq].pixel_freq) vic_alternate_clock = true; else vic_alternate_clock = false; if (freq == MESON_VCLK_HDMI_ENCI_54000 && !hdmi_use_enci) continue; if (freq == MESON_VCLK_HDMI_DDR_54000 && hdmi_use_enci) continue; if (freq == MESON_VCLK_HDMI_DDR_148500 && dac_freq == vclk_freq) continue; if (freq == MESON_VCLK_HDMI_148500 && dac_freq != vclk_freq) continue; break; } } if (!params[freq].pixel_freq) { pr_err("Fatal Error, invalid HDMI vclk freq %d\n", vclk_freq); return; } meson_vclk_set(priv, params[freq].pll_base_freq, params[freq].pll_od1, params[freq].pll_od2, params[freq].pll_od3, params[freq].vid_pll_div, params[freq].vclk_div, hdmi_tx_div, venc_div, hdmi_use_enci, vic_alternate_clock); } EXPORT_SYMBOL_GPL(meson_vclk_setup);
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