Lloyd Atkinson | 7715873 | 2016-10-23 13:02:00 -0400 | [diff] [blame] | 1 | /* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved. |
Alan Kwong | 5d324e4 | 2016-07-28 22:56:18 -0400 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include "sde_hwio.h" |
| 14 | #include "sde_hw_catalog.h" |
| 15 | #include "sde_hw_vbif.h" |
Lloyd Atkinson | 113aefd | 2016-10-23 13:15:18 -0400 | [diff] [blame^] | 16 | #include "sde_dbg.h" |
Alan Kwong | 5d324e4 | 2016-07-28 22:56:18 -0400 | [diff] [blame] | 17 | |
| 18 | #define VBIF_VERSION 0x0000 |
| 19 | #define VBIF_CLK_FORCE_CTRL0 0x0008 |
| 20 | #define VBIF_CLK_FORCE_CTRL1 0x000C |
| 21 | #define VBIF_QOS_REMAP_00 0x0020 |
| 22 | #define VBIF_QOS_REMAP_01 0x0024 |
| 23 | #define VBIF_QOS_REMAP_10 0x0028 |
| 24 | #define VBIF_QOS_REMAP_11 0x002C |
| 25 | #define VBIF_WRITE_GATHTER_EN 0x00AC |
| 26 | #define VBIF_IN_RD_LIM_CONF0 0x00B0 |
| 27 | #define VBIF_IN_RD_LIM_CONF1 0x00B4 |
| 28 | #define VBIF_IN_RD_LIM_CONF2 0x00B8 |
| 29 | #define VBIF_IN_WR_LIM_CONF0 0x00C0 |
| 30 | #define VBIF_IN_WR_LIM_CONF1 0x00C4 |
| 31 | #define VBIF_IN_WR_LIM_CONF2 0x00C8 |
| 32 | #define VBIF_OUT_RD_LIM_CONF0 0x00D0 |
| 33 | #define VBIF_OUT_WR_LIM_CONF0 0x00D4 |
| 34 | #define VBIF_XIN_HALT_CTRL0 0x0200 |
| 35 | #define VBIF_XIN_HALT_CTRL1 0x0204 |
| 36 | |
| 37 | static void sde_hw_set_limit_conf(struct sde_hw_vbif *vbif, |
| 38 | u32 xin_id, bool rd, u32 limit) |
| 39 | { |
| 40 | struct sde_hw_blk_reg_map *c = &vbif->hw; |
| 41 | u32 reg_val; |
| 42 | u32 reg_off; |
| 43 | u32 bit_off; |
| 44 | |
| 45 | if (rd) |
| 46 | reg_off = VBIF_IN_RD_LIM_CONF0; |
| 47 | else |
| 48 | reg_off = VBIF_IN_WR_LIM_CONF0; |
| 49 | |
| 50 | reg_off += (xin_id / 4) * 4; |
| 51 | bit_off = (xin_id % 4) * 8; |
| 52 | reg_val = SDE_REG_READ(c, reg_off); |
| 53 | reg_val &= ~(0xFF << bit_off); |
| 54 | reg_val |= (limit) << bit_off; |
| 55 | SDE_REG_WRITE(c, reg_off, reg_val); |
| 56 | } |
| 57 | |
| 58 | static u32 sde_hw_get_limit_conf(struct sde_hw_vbif *vbif, |
| 59 | u32 xin_id, bool rd) |
| 60 | { |
| 61 | struct sde_hw_blk_reg_map *c = &vbif->hw; |
| 62 | u32 reg_val; |
| 63 | u32 reg_off; |
| 64 | u32 bit_off; |
| 65 | u32 limit; |
| 66 | |
| 67 | if (rd) |
| 68 | reg_off = VBIF_IN_RD_LIM_CONF0; |
| 69 | else |
| 70 | reg_off = VBIF_IN_WR_LIM_CONF0; |
| 71 | |
| 72 | reg_off += (xin_id / 4) * 4; |
| 73 | bit_off = (xin_id % 4) * 8; |
| 74 | reg_val = SDE_REG_READ(c, reg_off); |
| 75 | limit = (reg_val >> bit_off) & 0xFF; |
| 76 | |
| 77 | return limit; |
| 78 | } |
| 79 | |
| 80 | static void sde_hw_set_halt_ctrl(struct sde_hw_vbif *vbif, |
| 81 | u32 xin_id, bool enable) |
| 82 | { |
| 83 | struct sde_hw_blk_reg_map *c = &vbif->hw; |
| 84 | u32 reg_val; |
| 85 | |
| 86 | reg_val = SDE_REG_READ(c, VBIF_XIN_HALT_CTRL0); |
| 87 | |
| 88 | if (enable) |
| 89 | reg_val |= BIT(xin_id); |
| 90 | else |
| 91 | reg_val &= ~BIT(xin_id); |
| 92 | |
| 93 | SDE_REG_WRITE(c, VBIF_XIN_HALT_CTRL0, reg_val); |
| 94 | } |
| 95 | |
| 96 | static bool sde_hw_get_halt_ctrl(struct sde_hw_vbif *vbif, |
| 97 | u32 xin_id) |
| 98 | { |
| 99 | struct sde_hw_blk_reg_map *c = &vbif->hw; |
| 100 | u32 reg_val; |
| 101 | |
| 102 | reg_val = SDE_REG_READ(c, VBIF_XIN_HALT_CTRL1); |
| 103 | |
| 104 | return (reg_val & BIT(xin_id)) ? true : false; |
| 105 | } |
| 106 | |
| 107 | static void _setup_vbif_ops(struct sde_hw_vbif_ops *ops, |
| 108 | unsigned long cap) |
| 109 | { |
| 110 | ops->set_limit_conf = sde_hw_set_limit_conf; |
| 111 | ops->get_limit_conf = sde_hw_get_limit_conf; |
| 112 | ops->set_halt_ctrl = sde_hw_set_halt_ctrl; |
| 113 | ops->get_halt_ctrl = sde_hw_get_halt_ctrl; |
| 114 | } |
| 115 | |
| 116 | static const struct sde_vbif_cfg *_top_offset(enum sde_vbif vbif, |
| 117 | const struct sde_mdss_cfg *m, |
| 118 | void __iomem *addr, |
| 119 | struct sde_hw_blk_reg_map *b) |
| 120 | { |
| 121 | int i; |
| 122 | |
| 123 | for (i = 0; i < m->vbif_count; i++) { |
| 124 | if (vbif == m->vbif[i].id) { |
| 125 | b->base_off = addr; |
| 126 | b->blk_off = m->vbif[i].base; |
Lloyd Atkinson | 7715873 | 2016-10-23 13:02:00 -0400 | [diff] [blame] | 127 | b->length = m->vbif[i].len; |
Alan Kwong | 5d324e4 | 2016-07-28 22:56:18 -0400 | [diff] [blame] | 128 | b->hwversion = m->hwversion; |
| 129 | b->log_mask = SDE_DBG_MASK_VBIF; |
| 130 | return &m->vbif[i]; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | return ERR_PTR(-EINVAL); |
| 135 | } |
| 136 | |
| 137 | struct sde_hw_vbif *sde_hw_vbif_init(enum sde_vbif idx, |
| 138 | void __iomem *addr, |
| 139 | const struct sde_mdss_cfg *m) |
| 140 | { |
| 141 | struct sde_hw_vbif *c; |
| 142 | const struct sde_vbif_cfg *cfg; |
| 143 | |
| 144 | c = kzalloc(sizeof(*c), GFP_KERNEL); |
| 145 | if (!c) |
| 146 | return ERR_PTR(-ENOMEM); |
| 147 | |
| 148 | cfg = _top_offset(idx, m, addr, &c->hw); |
| 149 | if (IS_ERR_OR_NULL(cfg)) { |
| 150 | kfree(c); |
| 151 | return ERR_PTR(-EINVAL); |
| 152 | } |
| 153 | |
| 154 | /* |
| 155 | * Assign ops |
| 156 | */ |
| 157 | c->idx = idx; |
| 158 | c->cap = cfg; |
| 159 | _setup_vbif_ops(&c->ops, c->cap->features); |
| 160 | |
Lloyd Atkinson | 113aefd | 2016-10-23 13:15:18 -0400 | [diff] [blame^] | 161 | sde_dbg_reg_register_dump_range(SDE_DBG_NAME, cfg->name, c->hw.blk_off, |
| 162 | c->hw.blk_off + c->hw.length, c->hw.xin_id); |
| 163 | |
Alan Kwong | 5d324e4 | 2016-07-28 22:56:18 -0400 | [diff] [blame] | 164 | return c; |
| 165 | } |
| 166 | |
| 167 | void sde_hw_vbif_destroy(struct sde_hw_vbif *vbif) |
| 168 | { |
| 169 | kfree(vbif); |
| 170 | } |