1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6 #include "dsi_phy.h"
7 #include "dsi.xml.h"
8
dsi_28nm_dphy_set_timing(struct msm_dsi_phy * phy,struct msm_dsi_dphy_timing * timing)9 static void dsi_28nm_dphy_set_timing(struct msm_dsi_phy *phy,
10 struct msm_dsi_dphy_timing *timing)
11 {
12 void __iomem *base = phy->base;
13
14 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_0,
15 DSI_28nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
16 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_1,
17 DSI_28nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
18 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_2,
19 DSI_28nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
20 if (timing->clk_zero & BIT(8))
21 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_3,
22 DSI_28nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
23 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_4,
24 DSI_28nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
25 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_5,
26 DSI_28nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
27 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_6,
28 DSI_28nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
29 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_7,
30 DSI_28nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
31 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_8,
32 DSI_28nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
33 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_9,
34 DSI_28nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
35 DSI_28nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
36 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_10,
37 DSI_28nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
38 dsi_phy_write(base + REG_DSI_28nm_PHY_TIMING_CTRL_11,
39 DSI_28nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
40 }
41
dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy * phy,bool enable)42 static void dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
43 {
44 void __iomem *base = phy->reg_base;
45
46 if (!enable) {
47 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
48 return;
49 }
50
51 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x0);
52 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CAL_PWR_CFG, 1);
53 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_5, 0);
54 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_3, 0);
55 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_2, 0x3);
56 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_1, 0x9);
57 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_0, 0x7);
58 dsi_phy_write(base + REG_DSI_28nm_PHY_REGULATOR_CTRL_4, 0x20);
59 }
60
dsi_28nm_phy_enable(struct msm_dsi_phy * phy,int src_pll_id,struct msm_dsi_phy_clk_request * clk_req)61 static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
62 struct msm_dsi_phy_clk_request *clk_req)
63 {
64 struct msm_dsi_dphy_timing *timing = &phy->timing;
65 int i;
66 void __iomem *base = phy->base;
67
68 DBG("");
69
70 if (msm_dsi_dphy_timing_calc(timing, clk_req)) {
71 DRM_DEV_ERROR(&phy->pdev->dev,
72 "%s: D-PHY timing calculation failed\n", __func__);
73 return -EINVAL;
74 }
75
76 dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_0, 0xff);
77
78 dsi_28nm_phy_regulator_ctrl(phy, true);
79
80 dsi_phy_write(base + REG_DSI_28nm_PHY_LDO_CNTRL, 0x00);
81
82 dsi_28nm_dphy_set_timing(phy, timing);
83
84 dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_1, 0x00);
85 dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
86
87 dsi_phy_write(base + REG_DSI_28nm_PHY_STRENGTH_1, 0x6);
88
89 for (i = 0; i < 4; i++) {
90 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_0(i), 0);
91 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_1(i), 0);
92 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_2(i), 0);
93 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_3(i), 0);
94 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_CFG_4(i), 0);
95 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_DATAPATH(i), 0);
96 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_DEBUG_SEL(i), 0);
97 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_0(i), 0x1);
98 dsi_phy_write(base + REG_DSI_28nm_PHY_LN_TEST_STR_1(i), 0x97);
99 }
100
101 dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_CFG_4, 0);
102 dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_CFG_1, 0xc0);
103 dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR0, 0x1);
104 dsi_phy_write(base + REG_DSI_28nm_PHY_LNCK_TEST_STR1, 0xbb);
105
106 dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);
107
108 msm_dsi_phy_set_src_pll(phy, src_pll_id,
109 REG_DSI_28nm_PHY_GLBL_TEST_CTRL,
110 DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL);
111
112 return 0;
113 }
114
dsi_28nm_phy_disable(struct msm_dsi_phy * phy)115 static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
116 {
117 dsi_phy_write(phy->base + REG_DSI_28nm_PHY_CTRL_0, 0);
118 dsi_28nm_phy_regulator_ctrl(phy, false);
119
120 /*
121 * Wait for the registers writes to complete in order to
122 * ensure that the phy is completely disabled
123 */
124 wmb();
125 }
126
127 const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs = {
128 .type = MSM_DSI_PHY_28NM_HPM,
129 .src_pll_truthtable = { {true, true}, {false, true} },
130 .reg_cfg = {
131 .num = 1,
132 .regs = {
133 {"vddio", 100000, 100},
134 },
135 },
136 .ops = {
137 .enable = dsi_28nm_phy_enable,
138 .disable = dsi_28nm_phy_disable,
139 .init = msm_dsi_phy_init_common,
140 },
141 .io_start = { 0xfd922b00, 0xfd923100 },
142 .num_dsi_phy = 2,
143 };
144
145 const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = {
146 .type = MSM_DSI_PHY_28NM_LP,
147 .src_pll_truthtable = { {true, true}, {true, true} },
148 .reg_cfg = {
149 .num = 1,
150 .regs = {
151 {"vddio", 100000, 100}, /* 1.8 V */
152 },
153 },
154 .ops = {
155 .enable = dsi_28nm_phy_enable,
156 .disable = dsi_28nm_phy_disable,
157 .init = msm_dsi_phy_init_common,
158 },
159 .io_start = { 0x1a98500 },
160 .num_dsi_phy = 1,
161 };
162
163
