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 #include "dsi_phy_20nm.xml.h"
9
dsi_20nm_dphy_set_timing(struct msm_dsi_phy * phy,struct msm_dsi_dphy_timing * timing)10 static void dsi_20nm_dphy_set_timing(struct msm_dsi_phy *phy,
11 struct msm_dsi_dphy_timing *timing)
12 {
13 void __iomem *base = phy->base;
14
15 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_0,
16 DSI_20nm_PHY_TIMING_CTRL_0_CLK_ZERO(timing->clk_zero));
17 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_1,
18 DSI_20nm_PHY_TIMING_CTRL_1_CLK_TRAIL(timing->clk_trail));
19 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_2,
20 DSI_20nm_PHY_TIMING_CTRL_2_CLK_PREPARE(timing->clk_prepare));
21 if (timing->clk_zero & BIT(8))
22 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_3,
23 DSI_20nm_PHY_TIMING_CTRL_3_CLK_ZERO_8);
24 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_4,
25 DSI_20nm_PHY_TIMING_CTRL_4_HS_EXIT(timing->hs_exit));
26 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_5,
27 DSI_20nm_PHY_TIMING_CTRL_5_HS_ZERO(timing->hs_zero));
28 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_6,
29 DSI_20nm_PHY_TIMING_CTRL_6_HS_PREPARE(timing->hs_prepare));
30 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_7,
31 DSI_20nm_PHY_TIMING_CTRL_7_HS_TRAIL(timing->hs_trail));
32 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_8,
33 DSI_20nm_PHY_TIMING_CTRL_8_HS_RQST(timing->hs_rqst));
34 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_9,
35 DSI_20nm_PHY_TIMING_CTRL_9_TA_GO(timing->ta_go) |
36 DSI_20nm_PHY_TIMING_CTRL_9_TA_SURE(timing->ta_sure));
37 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_10,
38 DSI_20nm_PHY_TIMING_CTRL_10_TA_GET(timing->ta_get));
39 dsi_phy_write(base + REG_DSI_20nm_PHY_TIMING_CTRL_11,
40 DSI_20nm_PHY_TIMING_CTRL_11_TRIG3_CMD(0));
41 }
42
dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy * phy,bool enable)43 static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable)
44 {
45 void __iomem *base = phy->reg_base;
46
47 if (!enable) {
48 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0);
49 return;
50 }
51
52 if (phy->regulator_ldo_mode) {
53 dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x1d);
54 return;
55 }
56
57 /* non LDO mode */
58 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_1, 0x03);
59 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_2, 0x03);
60 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_3, 0x00);
61 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_4, 0x20);
62 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CAL_PWR_CFG, 0x01);
63 dsi_phy_write(phy->base + REG_DSI_20nm_PHY_LDO_CNTRL, 0x00);
64 dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03);
65 }
66
dsi_20nm_phy_enable(struct msm_dsi_phy * phy,struct msm_dsi_phy_clk_request * clk_req)67 static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy,
68 struct msm_dsi_phy_clk_request *clk_req)
69 {
70 struct msm_dsi_dphy_timing *timing = &phy->timing;
71 int i;
72 void __iomem *base = phy->base;
73 u32 cfg_4[4] = {0x20, 0x40, 0x20, 0x00};
74 u32 val;
75
76 DBG("");
77
78 if (msm_dsi_dphy_timing_calc(timing, clk_req)) {
79 DRM_DEV_ERROR(&phy->pdev->dev,
80 "%s: D-PHY timing calculation failed\n", __func__);
81 return -EINVAL;
82 }
83
84 dsi_20nm_phy_regulator_ctrl(phy, true);
85
86 dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff);
87
88 val = dsi_phy_read(base + REG_DSI_20nm_PHY_GLBL_TEST_CTRL);
89 if (phy->id == DSI_1 && phy->usecase == MSM_DSI_PHY_STANDALONE)
90 val |= DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL;
91 else
92 val &= ~DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL;
93 dsi_phy_write(base + REG_DSI_20nm_PHY_GLBL_TEST_CTRL, val);
94
95 for (i = 0; i < 4; i++) {
96 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_3(i),
97 (i >> 1) * 0x40);
98 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_0(i), 0x01);
99 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_TEST_STR_1(i), 0x46);
100 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_0(i), 0x02);
101 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_1(i), 0xa0);
102 dsi_phy_write(base + REG_DSI_20nm_PHY_LN_CFG_4(i), cfg_4[i]);
103 }
104
105 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_3, 0x80);
106 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR0, 0x01);
107 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_TEST_STR1, 0x46);
108 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_0, 0x00);
109 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_1, 0xa0);
110 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_2, 0x00);
111 dsi_phy_write(base + REG_DSI_20nm_PHY_LNCK_CFG_4, 0x00);
112
113 dsi_20nm_dphy_set_timing(phy, timing);
114
115 dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_1, 0x00);
116
117 dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_1, 0x06);
118
119 /* make sure everything is written before enable */
120 wmb();
121 dsi_phy_write(base + REG_DSI_20nm_PHY_CTRL_0, 0x7f);
122
123 return 0;
124 }
125
dsi_20nm_phy_disable(struct msm_dsi_phy * phy)126 static void dsi_20nm_phy_disable(struct msm_dsi_phy *phy)
127 {
128 dsi_phy_write(phy->base + REG_DSI_20nm_PHY_CTRL_0, 0);
129 dsi_20nm_phy_regulator_ctrl(phy, false);
130 }
131
132 static const struct regulator_bulk_data dsi_phy_20nm_regulators[] = {
133 { .supply = "vddio", .init_load_uA = 100000 }, /* 1.8 V */
134 { .supply = "vcca", .init_load_uA = 10000 }, /* 1.0 V */
135 };
136
137 const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs = {
138 .has_phy_regulator = true,
139 .regulator_data = dsi_phy_20nm_regulators,
140 .num_regulators = ARRAY_SIZE(dsi_phy_20nm_regulators),
141 .ops = {
142 .enable = dsi_20nm_phy_enable,
143 .disable = dsi_20nm_phy_disable,
144 },
145 .io_start = { 0xfd998500, 0xfd9a0500 },
146 .num_dsi_phy = 2,
147 };
148
149