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5c829028 HL |
1 | /* |
2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 and | |
6 | * only version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #include "dsi_phy.h" | |
15 | #include "dsi.xml.h" | |
16 | ||
17 | static void dsi_20nm_dphy_set_timing(struct msm_dsi_phy *phy, | |
18 | struct msm_dsi_dphy_timing *timing) | |
19 | { | |
20 | void __iomem *base = phy->base; | |
21 | ||
22 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_0, | |
23 | DSI_20nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero)); | |
24 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_1, | |
25 | DSI_20nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail)); | |
26 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_2, | |
27 | DSI_20nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare)); | |
28 | if (timing->clk_zero & BIT(8)) | |
29 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_3, | |
30 | DSI_20nm_PHY_TIMING_CTRL_3_CLK_ZERO_8); | |
31 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_4, | |
32 | DSI_20nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit)); | |
33 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_5, | |
34 | DSI_20nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero)); | |
35 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_6, | |
36 | DSI_20nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare)); | |
37 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_7, | |
38 | DSI_20nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail)); | |
39 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_8, | |
40 | DSI_20nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst)); | |
41 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_9, | |
42 | DSI_20nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) | | |
43 | DSI_20nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure)); | |
44 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_10, | |
45 | DSI_20nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get)); | |
46 | dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_11, | |
47 | DSI_20nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0)); | |
48 | } | |
49 | ||
50 | static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable) | |
51 | { | |
52 | void __iomem *base = phy->reg_base; | |
53 | ||
54 | if (!enable) { | |
55 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0); | |
56 | return; | |
57 | } | |
58 | ||
59 | if (phy->regulator_ldo_mode) { | |
60 | dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x1d); | |
61 | return; | |
62 | } | |
63 | ||
64 | /* non LDO mode */ | |
65 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_1, 0x03); | |
66 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_2, 0x03); | |
67 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_3, 0x00); | |
68 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_4, 0x20); | |
69 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0x01); | |
70 | dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x00); | |
71 | dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03); | |
72 | } | |
73 | ||
74 | static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, | |
b62aa70a | 75 | struct msm_dsi_phy_clk_request *clk_req) |
5c829028 HL |
76 | { |
77 | struct msm_dsi_dphy_timing *timing = &phy->timing; | |
78 | int i; | |
79 | void __iomem *base = phy->base; | |
80 | u32 cfg_4[4] = {0x20, 0x40, 0x20, 0x00}; | |
81 | ||
82 | DBG(""); | |
83 | ||
b62aa70a | 84 | if (msm_dsi_dphy_timing_calc(timing, clk_req)) { |
5c829028 HL |
85 | dev_err(&phy->pdev->dev, |
86 | "%s: D-PHY timing calculation failed\n", __func__); | |
87 | return -EINVAL; | |
88 | } | |
89 | ||
90 | dsi_20nm_phy_regulator_ctrl(phy, true); | |
91 | ||
92 | dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff); | |
93 | ||
94 | msm_dsi_phy_set_src_pll(phy, src_pll_id, | |
95 | REG_DSI_20nm_PHY_GLBL_TEST_CTRL, | |
96 | DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL); | |
97 | ||
98 | for (i = 0; i < 4; i++) { | |
99 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_3(i), | |
100 | (i >> 1) * 0x40); | |
101 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_0(i), 0x01); | |
102 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_1(i), 0x46); | |
103 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_0(i), 0x02); | |
104 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_1(i), 0xa0); | |
105 | dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_4(i), cfg_4[i]); | |
106 | } | |
107 | ||
108 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_3, 0x80); | |
109 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR0, 0x01); | |
110 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR1, 0x46); | |
111 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_0, 0x00); | |
112 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_1, 0xa0); | |
113 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_2, 0x00); | |
114 | dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_4, 0x00); | |
115 | ||
116 | dsi_20nm_dphy_set_timing(phy, timing); | |
117 | ||
118 | dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_1, 0x00); | |
119 | ||
120 | dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_1, 0x06); | |
121 | ||
122 | /* make sure everything is written before enable */ | |
123 | wmb(); | |
124 | dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_0, 0x7f); | |
125 | ||
126 | return 0; | |
127 | } | |
128 | ||
129 | static void dsi_20nm_phy_disable(struct msm_dsi_phy *phy) | |
130 | { | |
131 | dsi_phy_write(phy->base + REG_DSI_20nm_PHY_CTRL_0, 0); | |
132 | dsi_20nm_phy_regulator_ctrl(phy, false); | |
133 | } | |
134 | ||
135 | const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs = { | |
136 | .type = MSM_DSI_PHY_20NM, | |
137 | .src_pll_truthtable = { {false, true}, {false, true} }, | |
138 | .reg_cfg = { | |
139 | .num = 2, | |
140 | .regs = { | |
f377d597 AT |
141 | {"vddio", 100000, 100}, /* 1.8 V */ |
142 | {"vcca", 10000, 100}, /* 1.0 V */ | |
5c829028 HL |
143 | }, |
144 | }, | |
145 | .ops = { | |
146 | .enable = dsi_20nm_phy_enable, | |
147 | .disable = dsi_20nm_phy_disable, | |
25c45d89 | 148 | .init = msm_dsi_phy_init_common, |
32280d66 AT |
149 | }, |
150 | .io_start = { 0xfd998300, 0xfd9a0300 }, | |
151 | .num_dsi_phy = 2, | |
5c829028 HL |
152 | }; |
153 |