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/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_vbif.h"
#include "dpu_dbg.h"
#define VBIF_VERSION 0x0000
#define VBIF_CLK_FORCE_CTRL0 0x0008
#define VBIF_CLK_FORCE_CTRL1 0x000C
#define VBIF_QOS_REMAP_00 0x0020
#define VBIF_QOS_REMAP_01 0x0024
#define VBIF_QOS_REMAP_10 0x0028
#define VBIF_QOS_REMAP_11 0x002C
#define VBIF_WRITE_GATHER_EN 0x00AC
#define VBIF_IN_RD_LIM_CONF0 0x00B0
#define VBIF_IN_RD_LIM_CONF1 0x00B4
#define VBIF_IN_RD_LIM_CONF2 0x00B8
#define VBIF_IN_WR_LIM_CONF0 0x00C0
#define VBIF_IN_WR_LIM_CONF1 0x00C4
#define VBIF_IN_WR_LIM_CONF2 0x00C8
#define VBIF_OUT_RD_LIM_CONF0 0x00D0
#define VBIF_OUT_WR_LIM_CONF0 0x00D4
#define VBIF_OUT_AXI_AMEMTYPE_CONF0 0x0160
#define VBIF_OUT_AXI_AMEMTYPE_CONF1 0x0164
#define VBIF_XIN_PND_ERR 0x0190
#define VBIF_XIN_SRC_ERR 0x0194
#define VBIF_XIN_CLR_ERR 0x019C
#define VBIF_XIN_HALT_CTRL0 0x0200
#define VBIF_XIN_HALT_CTRL1 0x0204
#define VBIF_XINL_QOS_RP_REMAP_000 0x0550
#define VBIF_XINL_QOS_LVL_REMAP_000 0x0590
static void dpu_hw_clear_errors(struct dpu_hw_vbif *vbif,
u32 *pnd_errors, u32 *src_errors)
{
struct dpu_hw_blk_reg_map *c;
u32 pnd, src;
if (!vbif)
return;
c = &vbif->hw;
pnd = DPU_REG_READ(c, VBIF_XIN_PND_ERR);
src = DPU_REG_READ(c, VBIF_XIN_SRC_ERR);
if (pnd_errors)
*pnd_errors = pnd;
if (src_errors)
*src_errors = src;
DPU_REG_WRITE(c, VBIF_XIN_CLR_ERR, pnd | src);
}
static void dpu_hw_set_mem_type(struct dpu_hw_vbif *vbif,
u32 xin_id, u32 value)
{
struct dpu_hw_blk_reg_map *c;
u32 reg_off;
u32 bit_off;
u32 reg_val;
/*
* Assume 4 bits per bit field, 8 fields per 32-bit register so
* 16 bit fields maximum across two registers
*/
if (!vbif || xin_id >= MAX_XIN_COUNT || xin_id >= 16)
return;
c = &vbif->hw;
if (xin_id >= 8) {
xin_id -= 8;
reg_off = VBIF_OUT_AXI_AMEMTYPE_CONF1;
} else {
reg_off = VBIF_OUT_AXI_AMEMTYPE_CONF0;
}
bit_off = (xin_id & 0x7) * 4;
reg_val = DPU_REG_READ(c, reg_off);
reg_val &= ~(0x7 << bit_off);
reg_val |= (value & 0x7) << bit_off;
DPU_REG_WRITE(c, reg_off, reg_val);
}
static void dpu_hw_set_limit_conf(struct dpu_hw_vbif *vbif,
u32 xin_id, bool rd, u32 limit)
{
struct dpu_hw_blk_reg_map *c = &vbif->hw;
u32 reg_val;
u32 reg_off;
u32 bit_off;
if (rd)
reg_off = VBIF_IN_RD_LIM_CONF0;
else
reg_off = VBIF_IN_WR_LIM_CONF0;
reg_off += (xin_id / 4) * 4;
bit_off = (xin_id % 4) * 8;
reg_val = DPU_REG_READ(c, reg_off);
reg_val &= ~(0xFF << bit_off);
reg_val |= (limit) << bit_off;
DPU_REG_WRITE(c, reg_off, reg_val);
}
static u32 dpu_hw_get_limit_conf(struct dpu_hw_vbif *vbif,
u32 xin_id, bool rd)
{
struct dpu_hw_blk_reg_map *c = &vbif->hw;
u32 reg_val;
u32 reg_off;
u32 bit_off;
u32 limit;
if (rd)
reg_off = VBIF_IN_RD_LIM_CONF0;
else
reg_off = VBIF_IN_WR_LIM_CONF0;
reg_off += (xin_id / 4) * 4;
bit_off = (xin_id % 4) * 8;
reg_val = DPU_REG_READ(c, reg_off);
limit = (reg_val >> bit_off) & 0xFF;
return limit;
}
static void dpu_hw_set_halt_ctrl(struct dpu_hw_vbif *vbif,
u32 xin_id, bool enable)
{
struct dpu_hw_blk_reg_map *c = &vbif->hw;
u32 reg_val;
reg_val = DPU_REG_READ(c, VBIF_XIN_HALT_CTRL0);
if (enable)
reg_val |= BIT(xin_id);
else
reg_val &= ~BIT(xin_id);
DPU_REG_WRITE(c, VBIF_XIN_HALT_CTRL0, reg_val);
}
static bool dpu_hw_get_halt_ctrl(struct dpu_hw_vbif *vbif,
u32 xin_id)
{
struct dpu_hw_blk_reg_map *c = &vbif->hw;
u32 reg_val;
reg_val = DPU_REG_READ(c, VBIF_XIN_HALT_CTRL1);
return (reg_val & BIT(xin_id)) ? true : false;
}
static void dpu_hw_set_qos_remap(struct dpu_hw_vbif *vbif,
u32 xin_id, u32 level, u32 remap_level)
{
struct dpu_hw_blk_reg_map *c;
u32 reg_val, reg_val_lvl, mask, reg_high, reg_shift;
if (!vbif)
return;
c = &vbif->hw;
reg_high = ((xin_id & 0x8) >> 3) * 4 + (level * 8);
reg_shift = (xin_id & 0x7) * 4;
reg_val = DPU_REG_READ(c, VBIF_XINL_QOS_RP_REMAP_000 + reg_high);
reg_val_lvl = DPU_REG_READ(c, VBIF_XINL_QOS_LVL_REMAP_000 + reg_high);
mask = 0x7 << reg_shift;
reg_val &= ~mask;
reg_val |= (remap_level << reg_shift) & mask;
reg_val_lvl &= ~mask;
reg_val_lvl |= (remap_level << reg_shift) & mask;
DPU_REG_WRITE(c, VBIF_XINL_QOS_RP_REMAP_000 + reg_high, reg_val);
DPU_REG_WRITE(c, VBIF_XINL_QOS_LVL_REMAP_000 + reg_high, reg_val_lvl);
}
static void dpu_hw_set_write_gather_en(struct dpu_hw_vbif *vbif, u32 xin_id)
{
struct dpu_hw_blk_reg_map *c;
u32 reg_val;
if (!vbif || xin_id >= MAX_XIN_COUNT)
return;
c = &vbif->hw;
reg_val = DPU_REG_READ(c, VBIF_WRITE_GATHER_EN);
reg_val |= BIT(xin_id);
DPU_REG_WRITE(c, VBIF_WRITE_GATHER_EN, reg_val);
}
static void _setup_vbif_ops(struct dpu_hw_vbif_ops *ops,
unsigned long cap)
{
ops->set_limit_conf = dpu_hw_set_limit_conf;
ops->get_limit_conf = dpu_hw_get_limit_conf;
ops->set_halt_ctrl = dpu_hw_set_halt_ctrl;
ops->get_halt_ctrl = dpu_hw_get_halt_ctrl;
if (test_bit(DPU_VBIF_QOS_REMAP, &cap))
ops->set_qos_remap = dpu_hw_set_qos_remap;
ops->set_mem_type = dpu_hw_set_mem_type;
ops->clear_errors = dpu_hw_clear_errors;
ops->set_write_gather_en = dpu_hw_set_write_gather_en;
}
static const struct dpu_vbif_cfg *_top_offset(enum dpu_vbif vbif,
const struct dpu_mdss_cfg *m,
void __iomem *addr,
struct dpu_hw_blk_reg_map *b)
{
int i;
for (i = 0; i < m->vbif_count; i++) {
if (vbif == m->vbif[i].id) {
b->base_off = addr;
b->blk_off = m->vbif[i].base;
b->length = m->vbif[i].len;
b->hwversion = m->hwversion;
b->log_mask = DPU_DBG_MASK_VBIF;
return &m->vbif[i];
}
}
return ERR_PTR(-EINVAL);
}
struct dpu_hw_vbif *dpu_hw_vbif_init(enum dpu_vbif idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
{
struct dpu_hw_vbif *c;
const struct dpu_vbif_cfg *cfg;
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return ERR_PTR(-ENOMEM);
cfg = _top_offset(idx, m, addr, &c->hw);
if (IS_ERR_OR_NULL(cfg)) {
kfree(c);
return ERR_PTR(-EINVAL);
}
/*
* Assign ops
*/
c->idx = idx;
c->cap = cfg;
_setup_vbif_ops(&c->ops, c->cap->features);
/* no need to register sub-range in dpu dbg, dump entire vbif io base */
return c;
}
void dpu_hw_vbif_destroy(struct dpu_hw_vbif *vbif)
{
kfree(vbif);
}
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