linux-zen-desktop/drivers/gpu/drm/msm/dp/dp_catalog.c

1097 lines
31 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm-dp] %s: " fmt, __func__
#include <linux/delay.h>
#include <linux/iopoll.h>
#include <linux/phy/phy.h>
#include <linux/phy/phy-dp.h>
#include <linux/rational.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/drm_print.h>
#include "dp_catalog.h"
#include "dp_reg.h"
#define POLLING_SLEEP_US 1000
#define POLLING_TIMEOUT_US 10000
#define SCRAMBLER_RESET_COUNT_VALUE 0xFC
#define DP_INTERRUPT_STATUS_ACK_SHIFT 1
#define DP_INTERRUPT_STATUS_MASK_SHIFT 2
#define DP_INTF_CONFIG_DATABUS_WIDEN BIT(4)
#define DP_INTERRUPT_STATUS1 \
(DP_INTR_AUX_XFER_DONE| \
DP_INTR_WRONG_ADDR | DP_INTR_TIMEOUT | \
DP_INTR_NACK_DEFER | DP_INTR_WRONG_DATA_CNT | \
DP_INTR_I2C_NACK | DP_INTR_I2C_DEFER | \
DP_INTR_PLL_UNLOCKED | DP_INTR_AUX_ERROR)
#define DP_INTERRUPT_STATUS1_ACK \
(DP_INTERRUPT_STATUS1 << DP_INTERRUPT_STATUS_ACK_SHIFT)
#define DP_INTERRUPT_STATUS1_MASK \
(DP_INTERRUPT_STATUS1 << DP_INTERRUPT_STATUS_MASK_SHIFT)
#define DP_INTERRUPT_STATUS2 \
(DP_INTR_READY_FOR_VIDEO | DP_INTR_IDLE_PATTERN_SENT | \
DP_INTR_FRAME_END | DP_INTR_CRC_UPDATED)
#define DP_INTERRUPT_STATUS2_ACK \
(DP_INTERRUPT_STATUS2 << DP_INTERRUPT_STATUS_ACK_SHIFT)
#define DP_INTERRUPT_STATUS2_MASK \
(DP_INTERRUPT_STATUS2 << DP_INTERRUPT_STATUS_MASK_SHIFT)
struct dp_catalog_private {
struct device *dev;
struct drm_device *drm_dev;
struct dp_io *io;
u32 (*audio_map)[DP_AUDIO_SDP_HEADER_MAX];
struct dp_catalog dp_catalog;
u8 aux_lut_cfg_index[PHY_AUX_CFG_MAX];
};
void dp_catalog_snapshot(struct dp_catalog *dp_catalog, struct msm_disp_state *disp_state)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
struct dss_io_data *dss = &catalog->io->dp_controller;
msm_disp_snapshot_add_block(disp_state, dss->ahb.len, dss->ahb.base, "dp_ahb");
msm_disp_snapshot_add_block(disp_state, dss->aux.len, dss->aux.base, "dp_aux");
msm_disp_snapshot_add_block(disp_state, dss->link.len, dss->link.base, "dp_link");
msm_disp_snapshot_add_block(disp_state, dss->p0.len, dss->p0.base, "dp_p0");
}
static inline u32 dp_read_aux(struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.aux.base + offset);
}
static inline void dp_write_aux(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
/*
* To make sure aux reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
writel(data, catalog->io->dp_controller.aux.base + offset);
}
static inline u32 dp_read_ahb(const struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.ahb.base + offset);
}
static inline void dp_write_ahb(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
/*
* To make sure phy reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
writel(data, catalog->io->dp_controller.ahb.base + offset);
}
static inline void dp_write_p0(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
/*
* To make sure interface reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
writel(data, catalog->io->dp_controller.p0.base + offset);
}
static inline u32 dp_read_p0(struct dp_catalog_private *catalog,
u32 offset)
{
/*
* To make sure interface reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
return readl_relaxed(catalog->io->dp_controller.p0.base + offset);
}
static inline u32 dp_read_link(struct dp_catalog_private *catalog, u32 offset)
{
return readl_relaxed(catalog->io->dp_controller.link.base + offset);
}
static inline void dp_write_link(struct dp_catalog_private *catalog,
u32 offset, u32 data)
{
/*
* To make sure link reg writes happens before any other operation,
* this function uses writel() instread of writel_relaxed()
*/
writel(data, catalog->io->dp_controller.link.base + offset);
}
/* aux related catalog functions */
u32 dp_catalog_aux_read_data(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
return dp_read_aux(catalog, REG_DP_AUX_DATA);
}
int dp_catalog_aux_write_data(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_aux(catalog, REG_DP_AUX_DATA, dp_catalog->aux_data);
return 0;
}
int dp_catalog_aux_write_trans(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_aux(catalog, REG_DP_AUX_TRANS_CTRL, dp_catalog->aux_data);
return 0;
}
int dp_catalog_aux_clear_trans(struct dp_catalog *dp_catalog, bool read)
{
u32 data;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
if (read) {
data = dp_read_aux(catalog, REG_DP_AUX_TRANS_CTRL);
data &= ~DP_AUX_TRANS_CTRL_GO;
dp_write_aux(catalog, REG_DP_AUX_TRANS_CTRL, data);
} else {
dp_write_aux(catalog, REG_DP_AUX_TRANS_CTRL, 0);
}
return 0;
}
int dp_catalog_aux_clear_hw_interrupts(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_read_aux(catalog, REG_DP_PHY_AUX_INTERRUPT_STATUS);
dp_write_aux(catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x1f);
dp_write_aux(catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0x9f);
dp_write_aux(catalog, REG_DP_PHY_AUX_INTERRUPT_CLEAR, 0);
return 0;
}
/**
* dp_catalog_aux_reset() - reset AUX controller
*
* @dp_catalog: DP catalog structure
*
* return: void
*
* This function reset AUX controller
*
* NOTE: reset AUX controller will also clear any pending HPD related interrupts
*
*/
void dp_catalog_aux_reset(struct dp_catalog *dp_catalog)
{
u32 aux_ctrl;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
aux_ctrl = dp_read_aux(catalog, REG_DP_AUX_CTRL);
aux_ctrl |= DP_AUX_CTRL_RESET;
dp_write_aux(catalog, REG_DP_AUX_CTRL, aux_ctrl);
usleep_range(1000, 1100); /* h/w recommended delay */
aux_ctrl &= ~DP_AUX_CTRL_RESET;
dp_write_aux(catalog, REG_DP_AUX_CTRL, aux_ctrl);
}
void dp_catalog_aux_enable(struct dp_catalog *dp_catalog, bool enable)
{
u32 aux_ctrl;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
aux_ctrl = dp_read_aux(catalog, REG_DP_AUX_CTRL);
if (enable) {
dp_write_aux(catalog, REG_DP_TIMEOUT_COUNT, 0xffff);
dp_write_aux(catalog, REG_DP_AUX_LIMITS, 0xffff);
aux_ctrl |= DP_AUX_CTRL_ENABLE;
} else {
aux_ctrl &= ~DP_AUX_CTRL_ENABLE;
}
dp_write_aux(catalog, REG_DP_AUX_CTRL, aux_ctrl);
}
void dp_catalog_aux_update_cfg(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
struct dp_io *dp_io = catalog->io;
struct phy *phy = dp_io->phy;
phy_calibrate(phy);
}
int dp_catalog_aux_wait_for_hpd_connect_state(struct dp_catalog *dp_catalog)
{
u32 state;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
/* poll for hpd connected status every 2ms and timeout after 500ms */
return readl_poll_timeout(catalog->io->dp_controller.aux.base +
REG_DP_DP_HPD_INT_STATUS,
state, state & DP_DP_HPD_STATE_STATUS_CONNECTED,
2000, 500000);
}
static void dump_regs(void __iomem *base, int len)
{
int i;
u32 x0, x4, x8, xc;
u32 addr_off = 0;
len = DIV_ROUND_UP(len, 16);
for (i = 0; i < len; i++) {
x0 = readl_relaxed(base + addr_off);
x4 = readl_relaxed(base + addr_off + 0x04);
x8 = readl_relaxed(base + addr_off + 0x08);
xc = readl_relaxed(base + addr_off + 0x0c);
pr_info("%08x: %08x %08x %08x %08x", addr_off, x0, x4, x8, xc);
addr_off += 16;
}
}
void dp_catalog_dump_regs(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
struct dss_io_data *io = &catalog->io->dp_controller;
pr_info("AHB regs\n");
dump_regs(io->ahb.base, io->ahb.len);
pr_info("AUXCLK regs\n");
dump_regs(io->aux.base, io->aux.len);
pr_info("LCLK regs\n");
dump_regs(io->link.base, io->link.len);
pr_info("P0CLK regs\n");
dump_regs(io->p0.base, io->p0.len);
}
u32 dp_catalog_aux_get_irq(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 intr, intr_ack;
intr = dp_read_ahb(catalog, REG_DP_INTR_STATUS);
intr &= ~DP_INTERRUPT_STATUS1_MASK;
intr_ack = (intr & DP_INTERRUPT_STATUS1)
<< DP_INTERRUPT_STATUS_ACK_SHIFT;
dp_write_ahb(catalog, REG_DP_INTR_STATUS, intr_ack |
DP_INTERRUPT_STATUS1_MASK);
return intr;
}
/* controller related catalog functions */
void dp_catalog_ctrl_update_transfer_unit(struct dp_catalog *dp_catalog,
u32 dp_tu, u32 valid_boundary,
u32 valid_boundary2)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_link(catalog, REG_DP_VALID_BOUNDARY, valid_boundary);
dp_write_link(catalog, REG_DP_TU, dp_tu);
dp_write_link(catalog, REG_DP_VALID_BOUNDARY_2, valid_boundary2);
}
void dp_catalog_ctrl_state_ctrl(struct dp_catalog *dp_catalog, u32 state)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_link(catalog, REG_DP_STATE_CTRL, state);
}
void dp_catalog_ctrl_config_ctrl(struct dp_catalog *dp_catalog, u32 cfg)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
drm_dbg_dp(catalog->drm_dev, "DP_CONFIGURATION_CTRL=0x%x\n", cfg);
dp_write_link(catalog, REG_DP_CONFIGURATION_CTRL, cfg);
}
void dp_catalog_ctrl_lane_mapping(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 ln_0 = 0, ln_1 = 1, ln_2 = 2, ln_3 = 3; /* One-to-One mapping */
u32 ln_mapping;
ln_mapping = ln_0 << LANE0_MAPPING_SHIFT;
ln_mapping |= ln_1 << LANE1_MAPPING_SHIFT;
ln_mapping |= ln_2 << LANE2_MAPPING_SHIFT;
ln_mapping |= ln_3 << LANE3_MAPPING_SHIFT;
dp_write_link(catalog, REG_DP_LOGICAL2PHYSICAL_LANE_MAPPING,
ln_mapping);
}
void dp_catalog_ctrl_mainlink_ctrl(struct dp_catalog *dp_catalog,
bool enable)
{
u32 mainlink_ctrl;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
drm_dbg_dp(catalog->drm_dev, "enable=%d\n", enable);
if (enable) {
/*
* To make sure link reg writes happens before other operation,
* dp_write_link() function uses writel()
*/
mainlink_ctrl = dp_read_link(catalog, REG_DP_MAINLINK_CTRL);
mainlink_ctrl &= ~(DP_MAINLINK_CTRL_RESET |
DP_MAINLINK_CTRL_ENABLE);
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl);
mainlink_ctrl |= DP_MAINLINK_CTRL_RESET;
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl);
mainlink_ctrl &= ~DP_MAINLINK_CTRL_RESET;
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl);
mainlink_ctrl |= (DP_MAINLINK_CTRL_ENABLE |
DP_MAINLINK_FB_BOUNDARY_SEL);
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl);
} else {
mainlink_ctrl = dp_read_link(catalog, REG_DP_MAINLINK_CTRL);
mainlink_ctrl &= ~DP_MAINLINK_CTRL_ENABLE;
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, mainlink_ctrl);
}
}
void dp_catalog_ctrl_config_misc(struct dp_catalog *dp_catalog,
u32 colorimetry_cfg,
u32 test_bits_depth)
{
u32 misc_val;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
misc_val = dp_read_link(catalog, REG_DP_MISC1_MISC0);
/* clear bpp bits */
misc_val &= ~(0x07 << DP_MISC0_TEST_BITS_DEPTH_SHIFT);
misc_val |= colorimetry_cfg << DP_MISC0_COLORIMETRY_CFG_SHIFT;
misc_val |= test_bits_depth << DP_MISC0_TEST_BITS_DEPTH_SHIFT;
/* Configure clock to synchronous mode */
misc_val |= DP_MISC0_SYNCHRONOUS_CLK;
drm_dbg_dp(catalog->drm_dev, "misc settings = 0x%x\n", misc_val);
dp_write_link(catalog, REG_DP_MISC1_MISC0, misc_val);
}
void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
u32 rate, u32 stream_rate_khz,
bool fixed_nvid)
{
u32 pixel_m, pixel_n;
u32 mvid, nvid, pixel_div = 0, dispcc_input_rate;
u32 const nvid_fixed = DP_LINK_CONSTANT_N_VALUE;
u32 const link_rate_hbr2 = 540000;
u32 const link_rate_hbr3 = 810000;
unsigned long den, num;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
if (rate == link_rate_hbr3)
pixel_div = 6;
else if (rate == 162000 || rate == 270000)
pixel_div = 2;
else if (rate == link_rate_hbr2)
pixel_div = 4;
else
DRM_ERROR("Invalid pixel mux divider\n");
dispcc_input_rate = (rate * 10) / pixel_div;
rational_best_approximation(dispcc_input_rate, stream_rate_khz,
(unsigned long)(1 << 16) - 1,
(unsigned long)(1 << 16) - 1, &den, &num);
den = ~(den - num);
den = den & 0xFFFF;
pixel_m = num;
pixel_n = den;
mvid = (pixel_m & 0xFFFF) * 5;
nvid = (0xFFFF & (~pixel_n)) + (pixel_m & 0xFFFF);
if (nvid < nvid_fixed) {
u32 temp;
temp = (nvid_fixed / nvid) * nvid;
mvid = (nvid_fixed / nvid) * mvid;
nvid = temp;
}
if (link_rate_hbr2 == rate)
nvid *= 2;
if (link_rate_hbr3 == rate)
nvid *= 3;
drm_dbg_dp(catalog->drm_dev, "mvid=0x%x, nvid=0x%x\n", mvid, nvid);
dp_write_link(catalog, REG_DP_SOFTWARE_MVID, mvid);
dp_write_link(catalog, REG_DP_SOFTWARE_NVID, nvid);
dp_write_p0(catalog, MMSS_DP_DSC_DTO, 0x0);
}
int dp_catalog_ctrl_set_pattern_state_bit(struct dp_catalog *dp_catalog,
u32 state_bit)
{
int bit, ret;
u32 data;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
bit = BIT(state_bit - 1);
drm_dbg_dp(catalog->drm_dev, "hw: bit=%d train=%d\n", bit, state_bit);
dp_catalog_ctrl_state_ctrl(dp_catalog, bit);
bit = BIT(state_bit - 1) << DP_MAINLINK_READY_LINK_TRAINING_SHIFT;
/* Poll for mainlink ready status */
ret = readx_poll_timeout(readl, catalog->io->dp_controller.link.base +
REG_DP_MAINLINK_READY,
data, data & bit,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
if (ret < 0) {
DRM_ERROR("set state_bit for link_train=%d failed\n", state_bit);
return ret;
}
return 0;
}
/**
* dp_catalog_hw_revision() - retrieve DP hw revision
*
* @dp_catalog: DP catalog structure
*
* Return: DP controller hw revision
*
*/
u32 dp_catalog_hw_revision(const struct dp_catalog *dp_catalog)
{
const struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
return dp_read_ahb(catalog, REG_DP_HW_VERSION);
}
/**
* dp_catalog_ctrl_reset() - reset DP controller
*
* @dp_catalog: DP catalog structure
*
* return: void
*
* This function reset the DP controller
*
* NOTE: reset DP controller will also clear any pending HPD related interrupts
*
*/
void dp_catalog_ctrl_reset(struct dp_catalog *dp_catalog)
{
u32 sw_reset;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
sw_reset = dp_read_ahb(catalog, REG_DP_SW_RESET);
sw_reset |= DP_SW_RESET;
dp_write_ahb(catalog, REG_DP_SW_RESET, sw_reset);
usleep_range(1000, 1100); /* h/w recommended delay */
sw_reset &= ~DP_SW_RESET;
dp_write_ahb(catalog, REG_DP_SW_RESET, sw_reset);
}
bool dp_catalog_ctrl_mainlink_ready(struct dp_catalog *dp_catalog)
{
u32 data;
int ret;
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
/* Poll for mainlink ready status */
ret = readl_poll_timeout(catalog->io->dp_controller.link.base +
REG_DP_MAINLINK_READY,
data, data & DP_MAINLINK_READY_FOR_VIDEO,
POLLING_SLEEP_US, POLLING_TIMEOUT_US);
if (ret < 0) {
DRM_ERROR("mainlink not ready\n");
return false;
}
return true;
}
void dp_catalog_ctrl_enable_irq(struct dp_catalog *dp_catalog,
bool enable)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
if (enable) {
dp_write_ahb(catalog, REG_DP_INTR_STATUS,
DP_INTERRUPT_STATUS1_MASK);
dp_write_ahb(catalog, REG_DP_INTR_STATUS2,
DP_INTERRUPT_STATUS2_MASK);
} else {
dp_write_ahb(catalog, REG_DP_INTR_STATUS, 0x00);
dp_write_ahb(catalog, REG_DP_INTR_STATUS2, 0x00);
}
}
void dp_catalog_hpd_config_intr(struct dp_catalog *dp_catalog,
u32 intr_mask, bool en)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 config = dp_read_aux(catalog, REG_DP_DP_HPD_INT_MASK);
config = (en ? config | intr_mask : config & ~intr_mask);
drm_dbg_dp(catalog->drm_dev, "intr_mask=%#x config=%#x\n",
intr_mask, config);
dp_write_aux(catalog, REG_DP_DP_HPD_INT_MASK,
config & DP_DP_HPD_INT_MASK);
}
void dp_catalog_ctrl_hpd_config(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 reftimer = dp_read_aux(catalog, REG_DP_DP_HPD_REFTIMER);
/* Configure REFTIMER and enable it */
reftimer |= DP_DP_HPD_REFTIMER_ENABLE;
dp_write_aux(catalog, REG_DP_DP_HPD_REFTIMER, reftimer);
/* Enable HPD */
dp_write_aux(catalog, REG_DP_DP_HPD_CTRL, DP_DP_HPD_CTRL_HPD_EN);
}
u32 dp_catalog_link_is_connected(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 status;
status = dp_read_aux(catalog, REG_DP_DP_HPD_INT_STATUS);
drm_dbg_dp(catalog->drm_dev, "aux status: %#x\n", status);
status >>= DP_DP_HPD_STATE_STATUS_BITS_SHIFT;
status &= DP_DP_HPD_STATE_STATUS_BITS_MASK;
return status;
}
u32 dp_catalog_hpd_get_intr_status(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
int isr, mask;
isr = dp_read_aux(catalog, REG_DP_DP_HPD_INT_STATUS);
dp_write_aux(catalog, REG_DP_DP_HPD_INT_ACK,
(isr & DP_DP_HPD_INT_MASK));
mask = dp_read_aux(catalog, REG_DP_DP_HPD_INT_MASK);
/*
* We only want to return interrupts that are unmasked to the caller.
* However, the interrupt status field also contains other
* informational bits about the HPD state status, so we only mask
* out the part of the register that tells us about which interrupts
* are pending.
*/
return isr & (mask | ~DP_DP_HPD_INT_MASK);
}
int dp_catalog_ctrl_get_interrupt(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 intr, intr_ack;
intr = dp_read_ahb(catalog, REG_DP_INTR_STATUS2);
intr &= ~DP_INTERRUPT_STATUS2_MASK;
intr_ack = (intr & DP_INTERRUPT_STATUS2)
<< DP_INTERRUPT_STATUS_ACK_SHIFT;
dp_write_ahb(catalog, REG_DP_INTR_STATUS2,
intr_ack | DP_INTERRUPT_STATUS2_MASK);
return intr;
}
void dp_catalog_ctrl_phy_reset(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_ahb(catalog, REG_DP_PHY_CTRL,
DP_PHY_CTRL_SW_RESET | DP_PHY_CTRL_SW_RESET_PLL);
usleep_range(1000, 1100); /* h/w recommended delay */
dp_write_ahb(catalog, REG_DP_PHY_CTRL, 0x0);
}
int dp_catalog_ctrl_update_vx_px(struct dp_catalog *dp_catalog,
u8 v_level, u8 p_level)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
struct dp_io *dp_io = catalog->io;
struct phy *phy = dp_io->phy;
struct phy_configure_opts_dp *opts_dp = &dp_io->phy_opts.dp;
/* TODO: Update for all lanes instead of just first one */
opts_dp->voltage[0] = v_level;
opts_dp->pre[0] = p_level;
opts_dp->set_voltages = 1;
phy_configure(phy, &dp_io->phy_opts);
opts_dp->set_voltages = 0;
return 0;
}
void dp_catalog_ctrl_send_phy_pattern(struct dp_catalog *dp_catalog,
u32 pattern)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 value = 0x0;
/* Make sure to clear the current pattern before starting a new one */
dp_write_link(catalog, REG_DP_STATE_CTRL, 0x0);
drm_dbg_dp(catalog->drm_dev, "pattern: %#x\n", pattern);
switch (pattern) {
case DP_PHY_TEST_PATTERN_D10_2:
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_TRAINING_PATTERN1);
break;
case DP_PHY_TEST_PATTERN_ERROR_COUNT:
value &= ~(1 << 16);
dp_write_link(catalog, REG_DP_HBR2_COMPLIANCE_SCRAMBLER_RESET,
value);
value |= SCRAMBLER_RESET_COUNT_VALUE;
dp_write_link(catalog, REG_DP_HBR2_COMPLIANCE_SCRAMBLER_RESET,
value);
dp_write_link(catalog, REG_DP_MAINLINK_LEVELS,
DP_MAINLINK_SAFE_TO_EXIT_LEVEL_2);
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_SYMBOL_ERR_MEASURE);
break;
case DP_PHY_TEST_PATTERN_PRBS7:
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_PRBS7);
break;
case DP_PHY_TEST_PATTERN_80BIT_CUSTOM:
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_TEST_CUSTOM_PATTERN);
/* 00111110000011111000001111100000 */
dp_write_link(catalog, REG_DP_TEST_80BIT_CUSTOM_PATTERN_REG0,
0x3E0F83E0);
/* 00001111100000111110000011111000 */
dp_write_link(catalog, REG_DP_TEST_80BIT_CUSTOM_PATTERN_REG1,
0x0F83E0F8);
/* 1111100000111110 */
dp_write_link(catalog, REG_DP_TEST_80BIT_CUSTOM_PATTERN_REG2,
0x0000F83E);
break;
case DP_PHY_TEST_PATTERN_CP2520:
value = dp_read_link(catalog, REG_DP_MAINLINK_CTRL);
value &= ~DP_MAINLINK_CTRL_SW_BYPASS_SCRAMBLER;
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, value);
value = DP_HBR2_ERM_PATTERN;
dp_write_link(catalog, REG_DP_HBR2_COMPLIANCE_SCRAMBLER_RESET,
value);
value |= SCRAMBLER_RESET_COUNT_VALUE;
dp_write_link(catalog, REG_DP_HBR2_COMPLIANCE_SCRAMBLER_RESET,
value);
dp_write_link(catalog, REG_DP_MAINLINK_LEVELS,
DP_MAINLINK_SAFE_TO_EXIT_LEVEL_2);
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_SYMBOL_ERR_MEASURE);
value = dp_read_link(catalog, REG_DP_MAINLINK_CTRL);
value |= DP_MAINLINK_CTRL_ENABLE;
dp_write_link(catalog, REG_DP_MAINLINK_CTRL, value);
break;
case DP_PHY_TEST_PATTERN_SEL_MASK:
dp_write_link(catalog, REG_DP_MAINLINK_CTRL,
DP_MAINLINK_CTRL_ENABLE);
dp_write_link(catalog, REG_DP_STATE_CTRL,
DP_STATE_CTRL_LINK_TRAINING_PATTERN4);
break;
default:
drm_dbg_dp(catalog->drm_dev,
"No valid test pattern requested: %#x\n", pattern);
break;
}
}
u32 dp_catalog_ctrl_read_phy_pattern(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
return dp_read_link(catalog, REG_DP_MAINLINK_READY);
}
/* panel related catalog functions */
int dp_catalog_panel_timing_cfg(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 reg;
dp_write_link(catalog, REG_DP_TOTAL_HOR_VER,
dp_catalog->total);
dp_write_link(catalog, REG_DP_START_HOR_VER_FROM_SYNC,
dp_catalog->sync_start);
dp_write_link(catalog, REG_DP_HSYNC_VSYNC_WIDTH_POLARITY,
dp_catalog->width_blanking);
dp_write_link(catalog, REG_DP_ACTIVE_HOR_VER, dp_catalog->dp_active);
reg = dp_read_p0(catalog, MMSS_DP_INTF_CONFIG);
if (dp_catalog->wide_bus_en)
reg |= DP_INTF_CONFIG_DATABUS_WIDEN;
else
reg &= ~DP_INTF_CONFIG_DATABUS_WIDEN;
DRM_DEBUG_DP("wide_bus_en=%d reg=%#x\n", dp_catalog->wide_bus_en, reg);
dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, reg);
return 0;
}
void dp_catalog_panel_tpg_enable(struct dp_catalog *dp_catalog,
struct drm_display_mode *drm_mode)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
u32 hsync_period, vsync_period;
u32 display_v_start, display_v_end;
u32 hsync_start_x, hsync_end_x;
u32 v_sync_width;
u32 hsync_ctl;
u32 display_hctl;
/* TPG config parameters*/
hsync_period = drm_mode->htotal;
vsync_period = drm_mode->vtotal;
display_v_start = ((drm_mode->vtotal - drm_mode->vsync_start) *
hsync_period);
display_v_end = ((vsync_period - (drm_mode->vsync_start -
drm_mode->vdisplay))
* hsync_period) - 1;
display_v_start += drm_mode->htotal - drm_mode->hsync_start;
display_v_end -= (drm_mode->hsync_start - drm_mode->hdisplay);
hsync_start_x = drm_mode->htotal - drm_mode->hsync_start;
hsync_end_x = hsync_period - (drm_mode->hsync_start -
drm_mode->hdisplay) - 1;
v_sync_width = drm_mode->vsync_end - drm_mode->vsync_start;
hsync_ctl = (hsync_period << 16) |
(drm_mode->hsync_end - drm_mode->hsync_start);
display_hctl = (hsync_end_x << 16) | hsync_start_x;
dp_write_p0(catalog, MMSS_DP_INTF_CONFIG, 0x0);
dp_write_p0(catalog, MMSS_DP_INTF_HSYNC_CTL, hsync_ctl);
dp_write_p0(catalog, MMSS_DP_INTF_VSYNC_PERIOD_F0, vsync_period *
hsync_period);
dp_write_p0(catalog, MMSS_DP_INTF_VSYNC_PULSE_WIDTH_F0, v_sync_width *
hsync_period);
dp_write_p0(catalog, MMSS_DP_INTF_VSYNC_PERIOD_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_VSYNC_PULSE_WIDTH_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_DISPLAY_HCTL, display_hctl);
dp_write_p0(catalog, MMSS_DP_INTF_ACTIVE_HCTL, 0);
dp_write_p0(catalog, MMSS_INTF_DISPLAY_V_START_F0, display_v_start);
dp_write_p0(catalog, MMSS_DP_INTF_DISPLAY_V_END_F0, display_v_end);
dp_write_p0(catalog, MMSS_INTF_DISPLAY_V_START_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_DISPLAY_V_END_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_ACTIVE_V_START_F0, 0);
dp_write_p0(catalog, MMSS_DP_INTF_ACTIVE_V_END_F0, 0);
dp_write_p0(catalog, MMSS_DP_INTF_ACTIVE_V_START_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_ACTIVE_V_END_F1, 0);
dp_write_p0(catalog, MMSS_DP_INTF_POLARITY_CTL, 0);
dp_write_p0(catalog, MMSS_DP_TPG_MAIN_CONTROL,
DP_TPG_CHECKERED_RECT_PATTERN);
dp_write_p0(catalog, MMSS_DP_TPG_VIDEO_CONFIG,
DP_TPG_VIDEO_CONFIG_BPP_8BIT |
DP_TPG_VIDEO_CONFIG_RGB);
dp_write_p0(catalog, MMSS_DP_BIST_ENABLE,
DP_BIST_ENABLE_DPBIST_EN);
dp_write_p0(catalog, MMSS_DP_TIMING_ENGINE_EN,
DP_TIMING_ENGINE_EN_EN);
drm_dbg_dp(catalog->drm_dev, "%s: enabled tpg\n", __func__);
}
void dp_catalog_panel_tpg_disable(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
dp_write_p0(catalog, MMSS_DP_TPG_MAIN_CONTROL, 0x0);
dp_write_p0(catalog, MMSS_DP_BIST_ENABLE, 0x0);
dp_write_p0(catalog, MMSS_DP_TIMING_ENGINE_EN, 0x0);
}
struct dp_catalog *dp_catalog_get(struct device *dev, struct dp_io *io)
{
struct dp_catalog_private *catalog;
if (!io) {
DRM_ERROR("invalid input\n");
return ERR_PTR(-EINVAL);
}
catalog = devm_kzalloc(dev, sizeof(*catalog), GFP_KERNEL);
if (!catalog)
return ERR_PTR(-ENOMEM);
catalog->dev = dev;
catalog->io = io;
return &catalog->dp_catalog;
}
void dp_catalog_audio_get_header(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
u32 (*sdp_map)[DP_AUDIO_SDP_HEADER_MAX];
enum dp_catalog_audio_sdp_type sdp;
enum dp_catalog_audio_header_type header;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
sdp_map = catalog->audio_map;
sdp = dp_catalog->sdp_type;
header = dp_catalog->sdp_header;
dp_catalog->audio_data = dp_read_link(catalog,
sdp_map[sdp][header]);
}
void dp_catalog_audio_set_header(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
u32 (*sdp_map)[DP_AUDIO_SDP_HEADER_MAX];
enum dp_catalog_audio_sdp_type sdp;
enum dp_catalog_audio_header_type header;
u32 data;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
sdp_map = catalog->audio_map;
sdp = dp_catalog->sdp_type;
header = dp_catalog->sdp_header;
data = dp_catalog->audio_data;
dp_write_link(catalog, sdp_map[sdp][header], data);
}
void dp_catalog_audio_config_acr(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
u32 acr_ctrl, select;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
select = dp_catalog->audio_data;
acr_ctrl = select << 4 | BIT(31) | BIT(8) | BIT(14);
drm_dbg_dp(catalog->drm_dev, "select: %#x, acr_ctrl: %#x\n",
select, acr_ctrl);
dp_write_link(catalog, MMSS_DP_AUDIO_ACR_CTRL, acr_ctrl);
}
void dp_catalog_audio_enable(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
bool enable;
u32 audio_ctrl;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
enable = !!dp_catalog->audio_data;
audio_ctrl = dp_read_link(catalog, MMSS_DP_AUDIO_CFG);
if (enable)
audio_ctrl |= BIT(0);
else
audio_ctrl &= ~BIT(0);
drm_dbg_dp(catalog->drm_dev, "dp_audio_cfg = 0x%x\n", audio_ctrl);
dp_write_link(catalog, MMSS_DP_AUDIO_CFG, audio_ctrl);
/* make sure audio engine is disabled */
wmb();
}
void dp_catalog_audio_config_sdp(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
u32 sdp_cfg = 0;
u32 sdp_cfg2 = 0;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
sdp_cfg = dp_read_link(catalog, MMSS_DP_SDP_CFG);
/* AUDIO_TIMESTAMP_SDP_EN */
sdp_cfg |= BIT(1);
/* AUDIO_STREAM_SDP_EN */
sdp_cfg |= BIT(2);
/* AUDIO_COPY_MANAGEMENT_SDP_EN */
sdp_cfg |= BIT(5);
/* AUDIO_ISRC_SDP_EN */
sdp_cfg |= BIT(6);
/* AUDIO_INFOFRAME_SDP_EN */
sdp_cfg |= BIT(20);
drm_dbg_dp(catalog->drm_dev, "sdp_cfg = 0x%x\n", sdp_cfg);
dp_write_link(catalog, MMSS_DP_SDP_CFG, sdp_cfg);
sdp_cfg2 = dp_read_link(catalog, MMSS_DP_SDP_CFG2);
/* IFRM_REGSRC -> Do not use reg values */
sdp_cfg2 &= ~BIT(0);
/* AUDIO_STREAM_HB3_REGSRC-> Do not use reg values */
sdp_cfg2 &= ~BIT(1);
drm_dbg_dp(catalog->drm_dev, "sdp_cfg2 = 0x%x\n", sdp_cfg2);
dp_write_link(catalog, MMSS_DP_SDP_CFG2, sdp_cfg2);
}
void dp_catalog_audio_init(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
static u32 sdp_map[][DP_AUDIO_SDP_HEADER_MAX] = {
{
MMSS_DP_AUDIO_STREAM_0,
MMSS_DP_AUDIO_STREAM_1,
MMSS_DP_AUDIO_STREAM_1,
},
{
MMSS_DP_AUDIO_TIMESTAMP_0,
MMSS_DP_AUDIO_TIMESTAMP_1,
MMSS_DP_AUDIO_TIMESTAMP_1,
},
{
MMSS_DP_AUDIO_INFOFRAME_0,
MMSS_DP_AUDIO_INFOFRAME_1,
MMSS_DP_AUDIO_INFOFRAME_1,
},
{
MMSS_DP_AUDIO_COPYMANAGEMENT_0,
MMSS_DP_AUDIO_COPYMANAGEMENT_1,
MMSS_DP_AUDIO_COPYMANAGEMENT_1,
},
{
MMSS_DP_AUDIO_ISRC_0,
MMSS_DP_AUDIO_ISRC_1,
MMSS_DP_AUDIO_ISRC_1,
},
};
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
catalog->audio_map = sdp_map;
}
void dp_catalog_audio_sfe_level(struct dp_catalog *dp_catalog)
{
struct dp_catalog_private *catalog;
u32 mainlink_levels, safe_to_exit_level;
if (!dp_catalog)
return;
catalog = container_of(dp_catalog,
struct dp_catalog_private, dp_catalog);
safe_to_exit_level = dp_catalog->audio_data;
mainlink_levels = dp_read_link(catalog, REG_DP_MAINLINK_LEVELS);
mainlink_levels &= 0xFE0;
mainlink_levels |= safe_to_exit_level;
drm_dbg_dp(catalog->drm_dev,
"mainlink_level = 0x%x, safe_to_exit_level = 0x%x\n",
mainlink_levels, safe_to_exit_level);
dp_write_link(catalog, REG_DP_MAINLINK_LEVELS, mainlink_levels);
}