610 lines
14 KiB
C
610 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#include <linux/delay.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/module.h>
|
|
|
|
#include <drm/drm_atomic_state_helper.h>
|
|
#include <drm/drm_edid.h>
|
|
#include <drm/drm_modeset_helper_vtables.h>
|
|
#include <drm/drm_probe_helper.h>
|
|
|
|
#include "ast_drv.h"
|
|
|
|
MODULE_FIRMWARE("ast_dp501_fw.bin");
|
|
|
|
static void ast_release_firmware(void *data)
|
|
{
|
|
struct ast_device *ast = data;
|
|
|
|
release_firmware(ast->dp501_fw);
|
|
ast->dp501_fw = NULL;
|
|
}
|
|
|
|
static int ast_load_dp501_microcode(struct ast_device *ast)
|
|
{
|
|
struct drm_device *dev = &ast->base;
|
|
int ret;
|
|
|
|
ret = request_firmware(&ast->dp501_fw, "ast_dp501_fw.bin", dev->dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return devm_add_action_or_reset(dev->dev, ast_release_firmware, ast);
|
|
}
|
|
|
|
static void send_ack(struct ast_device *ast)
|
|
{
|
|
u8 sendack;
|
|
sendack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0xff);
|
|
sendack |= 0x80;
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0x00, sendack);
|
|
}
|
|
|
|
static void send_nack(struct ast_device *ast)
|
|
{
|
|
u8 sendack;
|
|
sendack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0xff);
|
|
sendack &= ~0x80;
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, 0x00, sendack);
|
|
}
|
|
|
|
static bool wait_ack(struct ast_device *ast)
|
|
{
|
|
u8 waitack;
|
|
u32 retry = 0;
|
|
do {
|
|
waitack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff);
|
|
waitack &= 0x80;
|
|
udelay(100);
|
|
} while ((!waitack) && (retry++ < 1000));
|
|
|
|
if (retry < 1000)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
static bool wait_nack(struct ast_device *ast)
|
|
{
|
|
u8 waitack;
|
|
u32 retry = 0;
|
|
do {
|
|
waitack = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff);
|
|
waitack &= 0x80;
|
|
udelay(100);
|
|
} while ((waitack) && (retry++ < 1000));
|
|
|
|
if (retry < 1000)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
static void set_cmd_trigger(struct ast_device *ast)
|
|
{
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, ~0x40, 0x40);
|
|
}
|
|
|
|
static void clear_cmd_trigger(struct ast_device *ast)
|
|
{
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9b, ~0x40, 0x00);
|
|
}
|
|
|
|
#if 0
|
|
static bool wait_fw_ready(struct ast_device *ast)
|
|
{
|
|
u8 waitready;
|
|
u32 retry = 0;
|
|
do {
|
|
waitready = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd2, 0xff);
|
|
waitready &= 0x40;
|
|
udelay(100);
|
|
} while ((!waitready) && (retry++ < 1000));
|
|
|
|
if (retry < 1000)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
static bool ast_write_cmd(struct ast_device *ast, u8 data)
|
|
{
|
|
int retry = 0;
|
|
|
|
if (wait_nack(ast)) {
|
|
send_nack(ast);
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data);
|
|
send_ack(ast);
|
|
set_cmd_trigger(ast);
|
|
do {
|
|
if (wait_ack(ast)) {
|
|
clear_cmd_trigger(ast);
|
|
send_nack(ast);
|
|
return true;
|
|
}
|
|
} while (retry++ < 100);
|
|
}
|
|
clear_cmd_trigger(ast);
|
|
send_nack(ast);
|
|
return false;
|
|
}
|
|
|
|
static bool ast_write_data(struct ast_device *ast, u8 data)
|
|
{
|
|
if (wait_nack(ast)) {
|
|
send_nack(ast);
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, data);
|
|
send_ack(ast);
|
|
if (wait_ack(ast)) {
|
|
send_nack(ast);
|
|
return true;
|
|
}
|
|
}
|
|
send_nack(ast);
|
|
return false;
|
|
}
|
|
|
|
#if 0
|
|
static bool ast_read_data(struct drm_device *dev, u8 *data)
|
|
{
|
|
struct ast_device *ast = to_ast_device(dev);
|
|
u8 tmp;
|
|
|
|
*data = 0;
|
|
|
|
if (wait_ack(ast) == false)
|
|
return false;
|
|
tmp = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd3, 0xff);
|
|
*data = tmp;
|
|
if (wait_nack(ast) == false) {
|
|
send_nack(ast);
|
|
return false;
|
|
}
|
|
send_nack(ast);
|
|
return true;
|
|
}
|
|
|
|
static void clear_cmd(struct ast_device *ast)
|
|
{
|
|
send_nack(ast);
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0x9a, 0x00, 0x00);
|
|
}
|
|
#endif
|
|
|
|
static void ast_set_dp501_video_output(struct ast_device *ast, u8 mode)
|
|
{
|
|
ast_write_cmd(ast, 0x40);
|
|
ast_write_data(ast, mode);
|
|
|
|
msleep(10);
|
|
}
|
|
|
|
static u32 get_fw_base(struct ast_device *ast)
|
|
{
|
|
return ast_mindwm(ast, 0x1e6e2104) & 0x7fffffff;
|
|
}
|
|
|
|
bool ast_backup_fw(struct ast_device *ast, u8 *addr, u32 size)
|
|
{
|
|
u32 i, data;
|
|
u32 boot_address;
|
|
|
|
if (ast->config_mode != ast_use_p2a)
|
|
return false;
|
|
|
|
data = ast_mindwm(ast, 0x1e6e2100) & 0x01;
|
|
if (data) {
|
|
boot_address = get_fw_base(ast);
|
|
for (i = 0; i < size; i += 4)
|
|
*(u32 *)(addr + i) = ast_mindwm(ast, boot_address + i);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool ast_launch_m68k(struct ast_device *ast)
|
|
{
|
|
u32 i, data, len = 0;
|
|
u32 boot_address;
|
|
u8 *fw_addr = NULL;
|
|
u8 jreg;
|
|
|
|
if (ast->config_mode != ast_use_p2a)
|
|
return false;
|
|
|
|
data = ast_mindwm(ast, 0x1e6e2100) & 0x01;
|
|
if (!data) {
|
|
|
|
if (ast->dp501_fw_addr) {
|
|
fw_addr = ast->dp501_fw_addr;
|
|
len = 32*1024;
|
|
} else {
|
|
if (!ast->dp501_fw &&
|
|
ast_load_dp501_microcode(ast) < 0)
|
|
return false;
|
|
|
|
fw_addr = (u8 *)ast->dp501_fw->data;
|
|
len = ast->dp501_fw->size;
|
|
}
|
|
/* Get BootAddress */
|
|
ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8);
|
|
data = ast_mindwm(ast, 0x1e6e0004);
|
|
switch (data & 0x03) {
|
|
case 0:
|
|
boot_address = 0x44000000;
|
|
break;
|
|
default:
|
|
case 1:
|
|
boot_address = 0x48000000;
|
|
break;
|
|
case 2:
|
|
boot_address = 0x50000000;
|
|
break;
|
|
case 3:
|
|
boot_address = 0x60000000;
|
|
break;
|
|
}
|
|
boot_address -= 0x200000; /* -2MB */
|
|
|
|
/* copy image to buffer */
|
|
for (i = 0; i < len; i += 4) {
|
|
data = *(u32 *)(fw_addr + i);
|
|
ast_moutdwm(ast, boot_address + i, data);
|
|
}
|
|
|
|
/* Init SCU */
|
|
ast_moutdwm(ast, 0x1e6e2000, 0x1688a8a8);
|
|
|
|
/* Launch FW */
|
|
ast_moutdwm(ast, 0x1e6e2104, 0x80000000 + boot_address);
|
|
ast_moutdwm(ast, 0x1e6e2100, 1);
|
|
|
|
/* Update Scratch */
|
|
data = ast_mindwm(ast, 0x1e6e2040) & 0xfffff1ff; /* D[11:9] = 100b: UEFI handling */
|
|
data |= 0x800;
|
|
ast_moutdwm(ast, 0x1e6e2040, data);
|
|
|
|
jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0x99, 0xfc); /* D[1:0]: Reserved Video Buffer */
|
|
jreg |= 0x02;
|
|
ast_set_index_reg(ast, AST_IO_VGACRI, 0x99, jreg);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static bool ast_dp501_is_connected(struct ast_device *ast)
|
|
{
|
|
u32 boot_address, offset, data;
|
|
|
|
if (ast->config_mode == ast_use_p2a) {
|
|
boot_address = get_fw_base(ast);
|
|
|
|
/* validate FW version */
|
|
offset = AST_DP501_GBL_VERSION;
|
|
data = ast_mindwm(ast, boot_address + offset);
|
|
if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1)
|
|
return false;
|
|
|
|
/* validate PnP Monitor */
|
|
offset = AST_DP501_PNPMONITOR;
|
|
data = ast_mindwm(ast, boot_address + offset);
|
|
if (!(data & AST_DP501_PNP_CONNECTED))
|
|
return false;
|
|
} else {
|
|
if (!ast->dp501_fw_buf)
|
|
return false;
|
|
|
|
/* dummy read */
|
|
offset = 0x0000;
|
|
data = readl(ast->dp501_fw_buf + offset);
|
|
|
|
/* validate FW version */
|
|
offset = AST_DP501_GBL_VERSION;
|
|
data = readl(ast->dp501_fw_buf + offset);
|
|
if ((data & AST_DP501_FW_VERSION_MASK) != AST_DP501_FW_VERSION_1)
|
|
return false;
|
|
|
|
/* validate PnP Monitor */
|
|
offset = AST_DP501_PNPMONITOR;
|
|
data = readl(ast->dp501_fw_buf + offset);
|
|
if (!(data & AST_DP501_PNP_CONNECTED))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int ast_dp512_read_edid_block(void *data, u8 *buf, unsigned int block, size_t len)
|
|
{
|
|
struct ast_device *ast = data;
|
|
size_t rdlen = round_up(len, 4);
|
|
u32 i, boot_address, offset, ediddata;
|
|
|
|
if (block > (512 / EDID_LENGTH))
|
|
return -EIO;
|
|
|
|
offset = AST_DP501_EDID_DATA + block * EDID_LENGTH;
|
|
|
|
if (ast->config_mode == ast_use_p2a) {
|
|
boot_address = get_fw_base(ast);
|
|
|
|
for (i = 0; i < rdlen; i += 4) {
|
|
ediddata = ast_mindwm(ast, boot_address + offset + i);
|
|
memcpy(buf, &ediddata, min((len - i), 4));
|
|
buf += 4;
|
|
}
|
|
} else {
|
|
for (i = 0; i < rdlen; i += 4) {
|
|
ediddata = readl(ast->dp501_fw_buf + offset + i);
|
|
memcpy(buf, &ediddata, min((len - i), 4));
|
|
buf += 4;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool ast_init_dvo(struct ast_device *ast)
|
|
{
|
|
u8 jreg;
|
|
u32 data;
|
|
ast_write32(ast, 0xf004, 0x1e6e0000);
|
|
ast_write32(ast, 0xf000, 0x1);
|
|
ast_write32(ast, 0x12000, 0x1688a8a8);
|
|
|
|
jreg = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd0, 0xff);
|
|
if (!(jreg & 0x80)) {
|
|
/* Init SCU DVO Settings */
|
|
data = ast_read32(ast, 0x12008);
|
|
/* delay phase */
|
|
data &= 0xfffff8ff;
|
|
data |= 0x00000500;
|
|
ast_write32(ast, 0x12008, data);
|
|
|
|
if (IS_AST_GEN4(ast)) {
|
|
data = ast_read32(ast, 0x12084);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0xfffe0000;
|
|
ast_write32(ast, 0x12084, data);
|
|
|
|
data = ast_read32(ast, 0x12088);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0x000fffff;
|
|
ast_write32(ast, 0x12088, data);
|
|
|
|
data = ast_read32(ast, 0x12090);
|
|
/* multi-pins for DVO single-edge */
|
|
data &= 0xffffffcf;
|
|
data |= 0x00000020;
|
|
ast_write32(ast, 0x12090, data);
|
|
} else { /* AST GEN5+ */
|
|
data = ast_read32(ast, 0x12088);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0x30000000;
|
|
ast_write32(ast, 0x12088, data);
|
|
|
|
data = ast_read32(ast, 0x1208c);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0x000000cf;
|
|
ast_write32(ast, 0x1208c, data);
|
|
|
|
data = ast_read32(ast, 0x120a4);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0xffff0000;
|
|
ast_write32(ast, 0x120a4, data);
|
|
|
|
data = ast_read32(ast, 0x120a8);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0x0000000f;
|
|
ast_write32(ast, 0x120a8, data);
|
|
|
|
data = ast_read32(ast, 0x12094);
|
|
/* multi-pins for DVO single-edge */
|
|
data |= 0x00000002;
|
|
ast_write32(ast, 0x12094, data);
|
|
}
|
|
}
|
|
|
|
/* Force to DVO */
|
|
data = ast_read32(ast, 0x1202c);
|
|
data &= 0xfffbffff;
|
|
ast_write32(ast, 0x1202c, data);
|
|
|
|
/* Init VGA DVO Settings */
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x80);
|
|
return true;
|
|
}
|
|
|
|
|
|
static void ast_init_analog(struct ast_device *ast)
|
|
{
|
|
u32 data;
|
|
|
|
/*
|
|
* Set DAC source to VGA mode in SCU2C via the P2A
|
|
* bridge. First configure the P2U to target the SCU
|
|
* in case it isn't at this stage.
|
|
*/
|
|
ast_write32(ast, 0xf004, 0x1e6e0000);
|
|
ast_write32(ast, 0xf000, 0x1);
|
|
|
|
/* Then unlock the SCU with the magic password */
|
|
ast_write32(ast, 0x12000, 0x1688a8a8);
|
|
ast_write32(ast, 0x12000, 0x1688a8a8);
|
|
ast_write32(ast, 0x12000, 0x1688a8a8);
|
|
|
|
/* Finally, clear bits [17:16] of SCU2c */
|
|
data = ast_read32(ast, 0x1202c);
|
|
data &= 0xfffcffff;
|
|
ast_write32(ast, 0, data);
|
|
|
|
/* Disable DVO */
|
|
ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xa3, 0xcf, 0x00);
|
|
}
|
|
|
|
void ast_init_3rdtx(struct ast_device *ast)
|
|
{
|
|
u8 vgacrd1;
|
|
|
|
if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) {
|
|
vgacrd1 = ast_get_index_reg_mask(ast, AST_IO_VGACRI, 0xd1,
|
|
AST_IO_VGACRD1_TX_TYPE_MASK);
|
|
switch (vgacrd1) {
|
|
case AST_IO_VGACRD1_TX_SIL164_VBIOS:
|
|
ast_init_dvo(ast);
|
|
break;
|
|
case AST_IO_VGACRD1_TX_DP501_VBIOS:
|
|
ast_launch_m68k(ast);
|
|
break;
|
|
case AST_IO_VGACRD1_TX_FW_EMBEDDED_FW:
|
|
ast_init_dvo(ast);
|
|
break;
|
|
default:
|
|
if (ast->tx_chip == AST_TX_SIL164)
|
|
ast_init_dvo(ast);
|
|
else
|
|
ast_init_analog(ast);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Encoder
|
|
*/
|
|
|
|
static const struct drm_encoder_funcs ast_dp501_encoder_funcs = {
|
|
.destroy = drm_encoder_cleanup,
|
|
};
|
|
|
|
static void ast_dp501_encoder_helper_atomic_enable(struct drm_encoder *encoder,
|
|
struct drm_atomic_state *state)
|
|
{
|
|
struct ast_device *ast = to_ast_device(encoder->dev);
|
|
|
|
ast_set_dp501_video_output(ast, 1);
|
|
}
|
|
|
|
static void ast_dp501_encoder_helper_atomic_disable(struct drm_encoder *encoder,
|
|
struct drm_atomic_state *state)
|
|
{
|
|
struct ast_device *ast = to_ast_device(encoder->dev);
|
|
|
|
ast_set_dp501_video_output(ast, 0);
|
|
}
|
|
|
|
static const struct drm_encoder_helper_funcs ast_dp501_encoder_helper_funcs = {
|
|
.atomic_enable = ast_dp501_encoder_helper_atomic_enable,
|
|
.atomic_disable = ast_dp501_encoder_helper_atomic_disable,
|
|
};
|
|
|
|
/*
|
|
* Connector
|
|
*/
|
|
|
|
static int ast_dp501_connector_helper_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct ast_connector *ast_connector = to_ast_connector(connector);
|
|
int count;
|
|
|
|
if (ast_connector->physical_status == connector_status_connected) {
|
|
struct ast_device *ast = to_ast_device(connector->dev);
|
|
const struct drm_edid *drm_edid;
|
|
|
|
drm_edid = drm_edid_read_custom(connector, ast_dp512_read_edid_block, ast);
|
|
drm_edid_connector_update(connector, drm_edid);
|
|
count = drm_edid_connector_add_modes(connector);
|
|
drm_edid_free(drm_edid);
|
|
} else {
|
|
drm_edid_connector_update(connector, NULL);
|
|
|
|
/*
|
|
* There's no EDID data without a connected monitor. Set BMC-
|
|
* compatible modes in this case. The XGA default resolution
|
|
* should work well for all BMCs.
|
|
*/
|
|
count = drm_add_modes_noedid(connector, 4096, 4096);
|
|
if (count)
|
|
drm_set_preferred_mode(connector, 1024, 768);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static int ast_dp501_connector_helper_detect_ctx(struct drm_connector *connector,
|
|
struct drm_modeset_acquire_ctx *ctx,
|
|
bool force)
|
|
{
|
|
struct ast_connector *ast_connector = to_ast_connector(connector);
|
|
struct ast_device *ast = to_ast_device(connector->dev);
|
|
enum drm_connector_status status = connector_status_disconnected;
|
|
|
|
if (ast_dp501_is_connected(ast))
|
|
status = connector_status_connected;
|
|
|
|
if (status != ast_connector->physical_status)
|
|
++connector->epoch_counter;
|
|
ast_connector->physical_status = status;
|
|
|
|
return connector_status_connected;
|
|
}
|
|
|
|
static const struct drm_connector_helper_funcs ast_dp501_connector_helper_funcs = {
|
|
.get_modes = ast_dp501_connector_helper_get_modes,
|
|
.detect_ctx = ast_dp501_connector_helper_detect_ctx,
|
|
};
|
|
|
|
static const struct drm_connector_funcs ast_dp501_connector_funcs = {
|
|
.reset = drm_atomic_helper_connector_reset,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = drm_connector_cleanup,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
};
|
|
|
|
/*
|
|
* Output
|
|
*/
|
|
|
|
int ast_dp501_output_init(struct ast_device *ast)
|
|
{
|
|
struct drm_device *dev = &ast->base;
|
|
struct drm_crtc *crtc = &ast->crtc;
|
|
struct drm_encoder *encoder;
|
|
struct ast_connector *ast_connector;
|
|
struct drm_connector *connector;
|
|
int ret;
|
|
|
|
/* encoder */
|
|
|
|
encoder = &ast->output.dp501.encoder;
|
|
ret = drm_encoder_init(dev, encoder, &ast_dp501_encoder_funcs,
|
|
DRM_MODE_ENCODER_TMDS, NULL);
|
|
if (ret)
|
|
return ret;
|
|
drm_encoder_helper_add(encoder, &ast_dp501_encoder_helper_funcs);
|
|
|
|
encoder->possible_crtcs = drm_crtc_mask(crtc);
|
|
|
|
/* connector */
|
|
|
|
ast_connector = &ast->output.dp501.connector;
|
|
connector = &ast_connector->base;
|
|
ret = drm_connector_init(dev, connector, &ast_dp501_connector_funcs,
|
|
DRM_MODE_CONNECTOR_DisplayPort);
|
|
if (ret)
|
|
return ret;
|
|
drm_connector_helper_add(connector, &ast_dp501_connector_helper_funcs);
|
|
|
|
connector->interlace_allowed = 0;
|
|
connector->doublescan_allowed = 0;
|
|
connector->polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT;
|
|
|
|
ast_connector->physical_status = connector->status;
|
|
|
|
ret = drm_connector_attach_encoder(connector, encoder);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|