Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 2 | * |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | * |
| 28 | */ |
| 29 | #include <debug.h> |
| 30 | #include <reg.h> |
| 31 | #include <err.h> |
| 32 | #include <smem.h> |
| 33 | #include <mipi_dsi.h> |
| 34 | #include <platform/iomap.h> |
Veera Sundaram Sankaran | db0b2bf | 2014-12-16 18:09:27 -0800 | [diff] [blame] | 35 | #include <platform/timer.h> |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 36 | |
| 37 | #define LPFR_LUT_SIZE 10 |
| 38 | |
| 39 | #define VCO_REF_CLOCK_RATE 19200000 |
| 40 | |
| 41 | #define FRAC_DIVIDER 10000 |
| 42 | |
Veera Sundaram Sankaran | db0b2bf | 2014-12-16 18:09:27 -0800 | [diff] [blame] | 43 | struct lpfr_cfg { |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 44 | uint32_t vco_rate; |
| 45 | uint8_t resistance; |
| 46 | }; |
| 47 | |
| 48 | static struct lpfr_cfg lpfr_lut[LPFR_LUT_SIZE] = { |
| 49 | {479500000, 8}, |
| 50 | {480000000, 11}, |
| 51 | {575500000, 8}, |
| 52 | {576000000, 12}, |
| 53 | {610500000, 8}, |
| 54 | {659500000, 9}, |
| 55 | {671500000, 10}, |
| 56 | {672000000, 14}, |
| 57 | {708500000, 10}, |
| 58 | {750000000, 11}, |
| 59 | }; |
| 60 | |
| 61 | uint64_t div_s64(uint64_t dividend, uint32_t divisor, uint32_t *remainder) |
| 62 | { |
| 63 | *remainder = dividend % divisor; |
| 64 | |
| 65 | return dividend / divisor; |
| 66 | } |
| 67 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 68 | void mdss_dsi_uniphy_pll_lock_detect_setting(uint32_t pll_base) |
| 69 | { |
| 70 | writel(0x0c, pll_base + 0x0064); /* LKDetect CFG2 */ |
| 71 | udelay(100); |
| 72 | writel(0x0d, pll_base + 0x0064); /* LKDetect CFG2 */ |
Dhaval Patel | f04efc3 | 2014-04-10 18:22:07 -0700 | [diff] [blame] | 73 | mdelay(1); |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | void mdss_dsi_uniphy_pll_sw_reset(uint32_t pll_base) |
| 77 | { |
| 78 | writel(0x01, pll_base + 0x0068); /* PLL TEST CFG */ |
| 79 | udelay(1); |
| 80 | writel(0x00, pll_base + 0x0068); /* PLL TEST CFG */ |
| 81 | udelay(1); |
| 82 | } |
| 83 | |
| 84 | int32_t mdss_dsi_auto_pll_config(uint32_t pll_base, uint32_t ctl_base, |
Casey Piper | 4bb1b74 | 2013-08-26 11:22:25 -0700 | [diff] [blame] | 85 | struct mdss_dsi_pll_config *pd) |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 86 | { |
| 87 | uint32_t rem, divider; |
| 88 | uint32_t refclk_cfg = 0, frac_n_mode = 0, ref_doubler_en_b = 0; |
| 89 | uint64_t vco_clock, div_fbx; |
| 90 | uint32_t ref_clk_to_pll = 0, frac_n_value = 0; |
| 91 | uint32_t sdm_cfg0, sdm_cfg1, sdm_cfg2, sdm_cfg3; |
| 92 | uint32_t gen_vco_clk, cal_cfg10, cal_cfg11; |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 93 | uint8_t i, rc = NO_ERROR; |
| 94 | |
| 95 | /* Configure the Loop filter resistance */ |
| 96 | for (i = 0; i < LPFR_LUT_SIZE; i++) |
| 97 | if (pd->vco_clock <= lpfr_lut[i].vco_rate) |
| 98 | break; |
| 99 | if (i == LPFR_LUT_SIZE) { |
| 100 | dprintf(INFO, "unable to get loop filter resistance. vco=%d\n" |
Lijuan Gao | 49a1a79 | 2014-10-22 11:19:37 +0800 | [diff] [blame] | 101 | , lpfr_lut[i-1].vco_rate); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 102 | rc = ERROR; |
| 103 | return rc; |
| 104 | } |
| 105 | |
Casey Piper | 4bb1b74 | 2013-08-26 11:22:25 -0700 | [diff] [blame] | 106 | mdss_dsi_phy_sw_reset(ctl_base); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 107 | |
| 108 | /* Loop filter resistance value */ |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 109 | writel(lpfr_lut[i].resistance, pll_base + 0x002c); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 110 | /* Loop filter capacitance values : c1 and c2 */ |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 111 | writel(0x70, pll_base + 0x0030); |
| 112 | writel(0x15, pll_base + 0x0034); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 113 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 114 | writel(0x02, pll_base + 0x0008); /* ChgPump */ |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 115 | /* postDiv1 - calculated in pll config*/ |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 116 | writel(pd->posdiv1, pll_base + 0x0004); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 117 | /* postDiv2 - fixed devision 4 */ |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 118 | writel(0x03, pll_base + 0x0024); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 119 | /* postDiv3 - calculated in pll config */ |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 120 | writel(pd->posdiv3, pll_base + 0x0028); /* postDiv3 */ |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 121 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 122 | writel(0x2b, pll_base + 0x0078); /* Cal CFG3 */ |
| 123 | writel(0x66, pll_base + 0x007c); /* Cal CFG4 */ |
| 124 | writel(0x05, pll_base + 0x0064); /* LKDetect CFG2 */ |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 125 | |
| 126 | rem = pd->vco_clock % VCO_REF_CLOCK_RATE; |
| 127 | if (rem) { |
| 128 | refclk_cfg = 0x1; |
| 129 | frac_n_mode = 1; |
| 130 | ref_doubler_en_b = 0; |
| 131 | } else { |
| 132 | refclk_cfg = 0x0; |
| 133 | frac_n_mode = 0; |
| 134 | ref_doubler_en_b = 1; |
| 135 | } |
| 136 | |
| 137 | ref_clk_to_pll = (VCO_REF_CLOCK_RATE * 2 * refclk_cfg) |
| 138 | + (ref_doubler_en_b * VCO_REF_CLOCK_RATE); |
| 139 | |
| 140 | vco_clock = ((uint64_t) pd->vco_clock) * FRAC_DIVIDER; |
| 141 | |
| 142 | div_fbx = vco_clock / ref_clk_to_pll; |
| 143 | |
| 144 | rem = (uint32_t) (div_fbx % FRAC_DIVIDER); |
| 145 | rem = rem * (1 << 16); |
| 146 | frac_n_value = rem / FRAC_DIVIDER; |
| 147 | |
| 148 | divider = pd->vco_clock / ref_clk_to_pll; |
| 149 | div_fbx *= ref_clk_to_pll; |
| 150 | gen_vco_clk = div_fbx / FRAC_DIVIDER; |
| 151 | |
| 152 | if (frac_n_mode) { |
| 153 | sdm_cfg0 = 0x0; |
| 154 | sdm_cfg1 = (divider & 0x3f) - 1; |
| 155 | sdm_cfg3 = frac_n_value / 256; |
| 156 | sdm_cfg2 = frac_n_value % 256; |
| 157 | } else { |
| 158 | sdm_cfg0 = (0x1 << 5); |
| 159 | sdm_cfg0 |= (divider & 0x3f) - 1; |
| 160 | sdm_cfg1 = 0x0; |
| 161 | sdm_cfg2 = 0; |
| 162 | sdm_cfg3 = 0; |
| 163 | } |
| 164 | |
| 165 | cal_cfg11 = gen_vco_clk / 256000000; |
| 166 | cal_cfg10 = (gen_vco_clk % 256000000) / 1000000; |
| 167 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 168 | writel(sdm_cfg1 , pll_base + 0x003c); /* SDM CFG1 */ |
| 169 | writel(sdm_cfg2 , pll_base + 0x0040); /* SDM CFG2 */ |
| 170 | writel(sdm_cfg3 , pll_base + 0x0044); /* SDM CFG3 */ |
| 171 | writel(0x00, pll_base + 0x0048); /* SDM CFG4 */ |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 172 | |
Padmanabhan Komanduru | 0597502 | 2014-04-17 16:47:34 +0530 | [diff] [blame] | 173 | if (pd->vco_delay) |
| 174 | udelay(pd->vco_delay); |
| 175 | else |
| 176 | udelay(10); |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 177 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 178 | writel(refclk_cfg, pll_base + 0x0000); /* REFCLK CFG */ |
| 179 | writel(0x00, pll_base + 0x0014); /* PWRGEN CFG */ |
| 180 | writel(0x71, pll_base + 0x000c); /* VCOLPF CFG */ |
| 181 | writel(pd->directpath, pll_base + 0x0010); /* VREG CFG */ |
| 182 | writel(sdm_cfg0, pll_base + 0x0038); /* SDM CFG0 */ |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 183 | |
Padmanabhan Komanduru | 703bd6d | 2014-03-25 19:57:01 +0530 | [diff] [blame] | 184 | writel(0x0a, pll_base + 0x006c); /* CAL CFG0 */ |
| 185 | writel(0x30, pll_base + 0x0084); /* CAL CFG6 */ |
| 186 | writel(0x00, pll_base + 0x0088); /* CAL CFG7 */ |
| 187 | writel(0x60, pll_base + 0x008c); /* CAL CFG8 */ |
| 188 | writel(0x00, pll_base + 0x0090); /* CAL CFG9 */ |
| 189 | writel(cal_cfg10, pll_base + 0x0094); /* CAL CFG10 */ |
| 190 | writel(cal_cfg11, pll_base + 0x0098); /* CAL CFG11 */ |
| 191 | writel(0x20, pll_base + 0x009c); /* EFUSE CFG */ |
Veera Sundaram Sankaran | db0b2bf | 2014-12-16 18:09:27 -0800 | [diff] [blame] | 192 | return rc; |
Arpita Banerjee | 2522bc6 | 2013-05-24 16:03:53 -0700 | [diff] [blame] | 193 | } |