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mb/siemens: Unify and clean lcd_panel.c coding style 

With the addition of the mc_ehl3 board variant, a few
points about commenting the code arose either from the
review or during the implementation itself.

This patch unifies structure of these files, which
have a similar structure across more Siemens boards
utilizing the PTN3460 eDP-to-LVDS bridge.

BUG=none
TEST=Check that images for the affected boards can be
built.

Change-Id: I59820362e1f87e296c5548b9c3cecba4d2710fe7
Signed-off-by: Jan Samek <jan.samek@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72068
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Jan Samek 2023-01-18 11:59:14 +01:00 committed by Felix Held
parent d6244534de
commit 6ea58346c6
5 changed files with 128 additions and 105 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
src/mainboard/siemens/mc_apl1/variants/mc_apl1/lcd_panel.c
View File

@ -6,8 +6,9 @@
#include <hwilib.h> #include <hwilib.h>
#include <types.h> #include <types.h>
/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460).
* @param edid_data pointer to EDID data in driver * @param edid_data pointer to EDID data in driver
* @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
*/ */
enum cb_err mb_get_edid(uint8_t edid_data[0x80]) enum cb_err mb_get_edid(uint8_t edid_data[0x80])
{ {
@ -28,14 +29,16 @@ enum cb_err mb_get_edid(uint8_t edid_data[0x80])
/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460)
* which has to be used. * which has to be used.
* @return Index of the EDID slot selected for EDID emulation
*/ */
uint8_t mb_select_edid_table(void) uint8_t mb_select_edid_table(void)
{ {
return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */
} }
/** \brief Function to enable mainboard to adjust the config data of PTN3460. /** \brief Function to enable mainboard to adjust the config data of PTN3460. For reference,
* @param *cfg_ptr Pointer to the PTN config structure to modify. * see NXP document AN11128 - PTN3460 Programming guide.
* @param *cfg_ptr Pointer to the PTN config structure to modify
* @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated.
*/ */
int mb_adjust_cfg(struct ptn_3460_config *cfg) int mb_adjust_cfg(struct ptn_3460_config *cfg)
@ -43,11 +46,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
const char *hwi_block = "hwinfo.hex"; const char *hwi_block = "hwinfo.hex";
uint8_t disp_con = 0, color_depth = 0; uint8_t disp_con = 0, color_depth = 0;
/* Get display-specific configuration from hwinfo. */
if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) {
printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block);
return -1; return -1;
} }
if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) { if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
@ -57,8 +60,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
} }
/* Set up configuration data according to the hwinfo block we got. */
/* Set up PTN3460 registers based on hwinfo and fixed board-specific parameters: */
/* Use 2 lanes for eDP, no P/N swapping, no ASSR, allow both HBR and RBR modes. */
cfg->dp_interface_ctrl = 0x00; cfg->dp_interface_ctrl = 0x00;
/* Use even bus for LVDS clock distribution only. */
cfg->lvds_interface_ctrl1 = 0x00; cfg->lvds_interface_ctrl1 = 0x00;
if (disp_con == PF_DISPLCON_LVDS_DUAL) { if (disp_con == PF_DISPLCON_LVDS_DUAL) {
/* Turn on dual LVDS lane and clock. */ /* Turn on dual LVDS lane and clock. */
@ -68,22 +74,22 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
/* Use 18 bits per pixel. */ /* Use 18 bits per pixel. */
cfg->lvds_interface_ctrl1 |= 0x20; cfg->lvds_interface_ctrl1 |= 0x20;
} }
/* 1 % clock spreading, 300 mV LVDS swing. */ /* 1% clock spreading, 300 mV LVDS swing */
cfg->lvds_interface_ctrl2 = 0x13; cfg->lvds_interface_ctrl2 = 0x13;
/* No LVDS lane swap. */ /* No LVDS lane/channel swapping */
cfg->lvds_interface_ctrl3 = 0x00; cfg->lvds_interface_ctrl3 = 0x00;
/* Delay T2 (VDD to LVDS active) by 16 ms. */ /* Enable VDD to LVDS active delay. */
cfg->t2_delay = 1; cfg->t2_delay = 0x01;
/* 500 ms from LVDS to backlight active. */ /* LVDS to backlight active delay: 500 ms */
cfg->t3_timing = 10; cfg->t3_timing = 0x0a;
/* 1 second re-power delay. */ /* Minimum re-power delay: 1 s */
cfg->t12_timing = 20; cfg->t12_timing = 0x14;
/* 150 ms backlight off to LVDS inactive. */ /* Backlight off to LVDS inactive delay: 150 ms */
cfg->t4_timing = 3; cfg->t4_timing = 0x03;
/* Delay T5 (LVDS to VDD inactive) by 16 ms. */ /* Enable LVDS to VDD inactive delay. */
cfg->t5_delay = 1; cfg->t5_delay = 0x01;
/* Enable backlight control. */ /* Enable backlight control. */
cfg->backlight_ctrl = 0; cfg->backlight_ctrl = 0x00;
return PTN_CFG_MODIFIED; return PTN_CFG_MODIFIED;
} }

41
src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c
View File

@ -6,8 +6,9 @@
#include <hwilib.h> #include <hwilib.h>
#include <types.h> #include <types.h>
/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460).
* @param edid_data pointer to EDID data in driver * @param edid_data pointer to EDID data in driver
* @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
*/ */
enum cb_err mb_get_edid(uint8_t edid_data[0x80]) enum cb_err mb_get_edid(uint8_t edid_data[0x80])
{ {
@ -28,14 +29,16 @@ enum cb_err mb_get_edid(uint8_t edid_data[0x80])
/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460)
* which has to be used. * which has to be used.
* @return Index of the EDID slot selected for EDID emulation
*/ */
uint8_t mb_select_edid_table(void) uint8_t mb_select_edid_table(void)
{ {
return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */
} }
/** \brief Function to enable mainboard to adjust the config data of PTN3460. /** \brief Function to enable mainboard to adjust the config data of PTN3460. For reference,
* @param *cfg_ptr Pointer to the PTN config structure to modify. * see NXP document AN11128 - PTN3460 Programming guide.
* @param *cfg_ptr Pointer to the PTN config structure to modify
* @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated.
*/ */
int mb_adjust_cfg(struct ptn_3460_config *cfg) int mb_adjust_cfg(struct ptn_3460_config *cfg)
@ -43,11 +46,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
const char *hwi_block = "hwinfo.hex"; const char *hwi_block = "hwinfo.hex";
uint8_t disp_con = 0, color_depth = 0; uint8_t disp_con = 0, color_depth = 0;
/* Get display-specific configuration from hwinfo. */
if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) {
printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block);
return -1; return -1;
} }
if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) { if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
@ -57,9 +60,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
} }
/* Set up configuration data according to the hwinfo block we got. */
/* Set up PTN3460 registers based on hwinfo and fixed board-specific parameters: */
/* Use 2 lanes for eDP, no P/N swapping, no ASSR, allow both HBR and RBR modes. */
cfg->dp_interface_ctrl = 0x00; cfg->dp_interface_ctrl = 0x00;
/* Use odd-bus for clock distribution only. */ /* Use odd bus for LVDS clock distribution only. */
cfg->lvds_interface_ctrl1 = 0x01; cfg->lvds_interface_ctrl1 = 0x01;
if (disp_con == PF_DISPLCON_LVDS_DUAL) { if (disp_con == PF_DISPLCON_LVDS_DUAL) {
/* Turn on dual LVDS lane and clock. */ /* Turn on dual LVDS lane and clock. */
@ -69,22 +74,22 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
/* Use 18 bits per pixel. */ /* Use 18 bits per pixel. */
cfg->lvds_interface_ctrl1 |= 0x20; cfg->lvds_interface_ctrl1 |= 0x20;
} }
/* No clock spreading, 300 mV LVDS swing. */ /* No clock spreading, 300 mV LVDS swing */
cfg->lvds_interface_ctrl2 = 0x03; cfg->lvds_interface_ctrl2 = 0x03;
/* Swap LVDS lanes (N vs. P). */ /* Swap LVDS lanes (N vs. P). */
cfg->lvds_interface_ctrl3 = 0x04; cfg->lvds_interface_ctrl3 = 0x04;
/* Delay T2 (VDD to LVDS active) by 16 ms. */ /* Enable VDD to LVDS active delay. */
cfg->t2_delay = 1; cfg->t2_delay = 0x01;
/* 500 ms from LVDS to backlight active. */ /* LVDS to backlight active delay: 500 ms */
cfg->t3_timing = 10; cfg->t3_timing = 0x0a;
/* 1 second re-power delay. */ /* Minimum re-power delay: 1 s */
cfg->t12_timing = 20; cfg->t12_timing = 0x14;
/* 150 ms backlight off to LVDS inactive. */ /* Backlight off to LVDS inactive delay: 150 ms */
cfg->t4_timing = 3; cfg->t4_timing = 0x03;
/* Delay T5 (LVDS to VDD inactive) by 16 ms. */ /* Enable LVDS to VDD inactive delay. */
cfg->t5_delay = 1; cfg->t5_delay = 0x01;
/* Enable backlight control. */ /* Enable backlight control. */
cfg->backlight_ctrl = 0; cfg->backlight_ctrl = 0x00;
return PTN_CFG_MODIFIED; return PTN_CFG_MODIFIED;
} }

43
src/mainboard/siemens/mc_apl1/variants/mc_apl5/lcd_panel.c
View File

@ -29,8 +29,9 @@ static void igd_disable(void)
pci_write_config8(root_dev, 0x54, deven); pci_write_config8(root_dev, 0x54, deven);
} }
/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460).
* @param edid_data pointer to EDID data in driver * @param edid_data pointer to EDID data in driver
* @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
*/ */
enum cb_err mb_get_edid(uint8_t edid_data[0x80]) enum cb_err mb_get_edid(uint8_t edid_data[0x80])
{ {
@ -53,14 +54,16 @@ enum cb_err mb_get_edid(uint8_t edid_data[0x80])
/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460)
* which has to be used. * which has to be used.
* @return Index of the EDID slot selected for EDID emulation
*/ */
uint8_t mb_select_edid_table(void) uint8_t mb_select_edid_table(void)
{ {
return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */
} }
/** \brief Function to enable mainboard to adjust the config data of PTN3460. /** \brief Function to enable mainboard to adjust the config data of PTN3460. For reference,
* @param *cfg_ptr Pointer to the PTN config structure to modify. * see NXP document AN11128 - PTN3460 Programming guide.
* @param *cfg_ptr Pointer to the PTN config structure to modify
* @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated.
*/ */
int mb_adjust_cfg(struct ptn_3460_config *cfg) int mb_adjust_cfg(struct ptn_3460_config *cfg)
@ -68,11 +71,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
const char *hwi_block = "hwinfo.hex"; const char *hwi_block = "hwinfo.hex";
uint8_t disp_con = 0, color_depth = 0; uint8_t disp_con = 0, color_depth = 0;
/* Get display-specific configuration from hwinfo. */
if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) {
printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block);
return -1; return -1;
} }
if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) { if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
@ -82,9 +85,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
} }
/* Set up configuration data according to the hwinfo block we got. */
/* Set up PTN3460 registers based on hwinfo and fixed board-specific parameters: */
/* Use 2 lanes for eDP, no P/N swapping, no ASSR, allow both HBR and RBR modes. */
cfg->dp_interface_ctrl = 0x00; cfg->dp_interface_ctrl = 0x00;
/* Drive LVDS clock for single mode on odd bus per default. */ /* Use odd bus for LVDS clock distribution only. */
cfg->lvds_interface_ctrl1 = 0x01; cfg->lvds_interface_ctrl1 = 0x01;
if (disp_con == PF_DISPLCON_LVDS_DUAL) { if (disp_con == PF_DISPLCON_LVDS_DUAL) {
/* Turn on dual LVDS lane and clock. */ /* Turn on dual LVDS lane and clock. */
@ -94,22 +99,22 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
/* Use 18 bits per pixel. */ /* Use 18 bits per pixel. */
cfg->lvds_interface_ctrl1 |= 0x20; cfg->lvds_interface_ctrl1 |= 0x20;
} }
/* 1 % clock spreading, 300 mV LVDS swing. */ /* 1% clock spreading, 300 mV LVDS swing */
cfg->lvds_interface_ctrl2 = 0x13; cfg->lvds_interface_ctrl2 = 0x13;
/* No LVDS lane swap. */ /* No LVDS lane/channel swapping */
cfg->lvds_interface_ctrl3 = 0x00; cfg->lvds_interface_ctrl3 = 0x00;
/* Delay T2 (VDD to LVDS active) by 16 ms. */ /* Enable VDD to LVDS active delay. */
cfg->t2_delay = 1; cfg->t2_delay = 0x01;
/* 500 ms from LVDS to backlight active. */ /* LVDS to backlight active delay: 500 ms */
cfg->t3_timing = 10; cfg->t3_timing = 0x0a;
/* 1 second re-power delay. */ /* Minimum re-power delay: 1 s */
cfg->t12_timing = 20; cfg->t12_timing = 0x14;
/* 150 ms backlight off to LVDS inactive. */ /* Backlight off to LVDS inactive delay: 150 ms */
cfg->t4_timing = 3; cfg->t4_timing = 0x03;
/* Delay T5 (LVDS to VDD inactive) by 16 ms. */ /* Enable LVDS to VDD inactive delay. */
cfg->t5_delay = 1; cfg->t5_delay = 0x01;
/* Enable backlight control. */ /* Enable backlight control. */
cfg->backlight_ctrl = 0; cfg->backlight_ctrl = 0x00;
return PTN_CFG_MODIFIED; return PTN_CFG_MODIFIED;
} }

41
src/mainboard/siemens/mc_apl1/variants/mc_apl7/lcd_panel.c
View File

@ -6,8 +6,9 @@
#include <hwilib.h> #include <hwilib.h>
#include <types.h> #include <types.h>
/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460).
* @param edid_data pointer to EDID data in driver * @param edid_data pointer to EDID data in driver
* @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
*/ */
enum cb_err mb_get_edid(uint8_t edid_data[0x80]) enum cb_err mb_get_edid(uint8_t edid_data[0x80])
{ {
@ -28,14 +29,16 @@ enum cb_err mb_get_edid(uint8_t edid_data[0x80])
/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460)
* which has to be used. * which has to be used.
* @return Index of the EDID slot selected for EDID emulation
*/ */
uint8_t mb_select_edid_table(void) uint8_t mb_select_edid_table(void)
{ {
return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */
} }
/** \brief Function to enable mainboard to adjust the config data of PTN3460. /** \brief Function to enable mainboard to adjust the config data of PTN3460. For reference,
* @param *cfg_ptr Pointer to the PTN config structure to modify. * see NXP document AN11128 - PTN3460 Programming guide.
* @param *cfg_ptr Pointer to the PTN config structure to modify
* @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated.
*/ */
int mb_adjust_cfg(struct ptn_3460_config *cfg) int mb_adjust_cfg(struct ptn_3460_config *cfg)
@ -43,11 +46,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
const char *hwi_block = "hwinfo.hex"; const char *hwi_block = "hwinfo.hex";
uint8_t disp_con = 0, color_depth = 0; uint8_t disp_con = 0, color_depth = 0;
/* Get display-specific configuration from hwinfo. */
if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) { if (hwilib_find_blocks(hwi_block) != CB_SUCCESS) {
printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block); printk(BIOS_ERR, "LCD: Info block \"%s\" not found!\n", hwi_block);
return -1; return -1;
} }
if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) { if (hwilib_get_field(PF_DisplCon, &disp_con, sizeof(disp_con)) != sizeof(disp_con)) {
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
@ -57,9 +60,11 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block); printk(BIOS_ERR, "LCD: Missing panel features from %s\n", hwi_block);
return -1; return -1;
} }
/* Set up configuration data according to the hwinfo block we got. */
/* Set up PTN3460 registers based on hwinfo and fixed board-specific parameters: */
/* Use 2 lanes for eDP, no P/N swapping, no ASSR, allow both HBR and RBR modes. */
cfg->dp_interface_ctrl = 0x00; cfg->dp_interface_ctrl = 0x00;
/* Use odd-bus for clock distribution only. */ /* Use odd bus for LVDS clock distribution only. */
cfg->lvds_interface_ctrl1 = 0x01; cfg->lvds_interface_ctrl1 = 0x01;
if (disp_con == PF_DISPLCON_LVDS_DUAL) { if (disp_con == PF_DISPLCON_LVDS_DUAL) {
/* Turn on dual LVDS lane and clock. */ /* Turn on dual LVDS lane and clock. */
@ -69,22 +74,22 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
/* Use 18 bits per pixel. */ /* Use 18 bits per pixel. */
cfg->lvds_interface_ctrl1 |= 0x20; cfg->lvds_interface_ctrl1 |= 0x20;
} }
/* No clock spreading, 300 mV LVDS swing. */ /* No clock spreading, 300 mV LVDS swing */
cfg->lvds_interface_ctrl2 = 0x03; cfg->lvds_interface_ctrl2 = 0x03;
/* Swap LVDS lanes (N vs. P). */ /* Swap LVDS lanes (N vs. P). */
cfg->lvds_interface_ctrl3 = 0x04; cfg->lvds_interface_ctrl3 = 0x04;
/* Delay T2 (VDD to LVDS active) by 16 ms. */ /* Enable VDD to LVDS active delay. */
cfg->t2_delay = 1; cfg->t2_delay = 0x01;
/* 500 ms from LVDS to backlight active. */ /* LVDS to backlight active delay: 500 ms */
cfg->t3_timing = 10; cfg->t3_timing = 0x0a;
/* 1 second re-power delay. */ /* Minimum re-power delay: 1 s */
cfg->t12_timing = 20; cfg->t12_timing = 0x14;
/* 150 ms backlight off to LVDS inactive. */ /* Backlight off to LVDS inactive delay: 150 ms */
cfg->t4_timing = 3; cfg->t4_timing = 0x03;
/* Delay T5 (LVDS to VDD inactive) by 16 ms. */ /* Enable LVDS to VDD inactive delay. */
cfg->t5_delay = 1; cfg->t5_delay = 0x01;
/* Enable backlight control. */ /* Enable backlight control. */
cfg->backlight_ctrl = 0; cfg->backlight_ctrl = 0x00;
return PTN_CFG_MODIFIED; return PTN_CFG_MODIFIED;
} }

26
src/mainboard/siemens/mc_ehl/variants/mc_ehl3/lcd_panel.c
View File

@ -6,8 +6,9 @@
#include <hwilib.h> #include <hwilib.h>
#include <types.h> #include <types.h>
/** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID data to the driver for DP2LVDS Bridge (PTN3460).
* @param edid_data pointer to EDID data in driver * @param edid_data pointer to EDID data in driver
* @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
*/ */
enum cb_err mb_get_edid(uint8_t edid_data[0x80]) enum cb_err mb_get_edid(uint8_t edid_data[0x80])
{ {
@ -28,14 +29,16 @@ enum cb_err mb_get_edid(uint8_t edid_data[0x80])
/** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460) /** \brief This function provides EDID block [0..6] to the driver for DP2LVDS Bridge (PTN3460)
* which has to be used. * which has to be used.
* @return Index of the EDID slot selected for EDID emulation
*/ */
uint8_t mb_select_edid_table(void) uint8_t mb_select_edid_table(void)
{ {
return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */ return 6; /* With this mainboard we use EDID block 6 for emulation in PTN3460. */
} }
/** \brief Function to enable mainboard to adjust the config data of PTN3460. /** \brief Function to enable mainboard to adjust the config data of PTN3460. For reference,
* @param *cfg_ptr Pointer to the PTN config structure to modify. * see NXP document AN11128 - PTN3460 Programming guide.
* @param *cfg_ptr Pointer to the PTN config structure to modify
* @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated. * @return -1 on error; PTN_CFG_MODIFIED if data was modified and needs to be updated.
*/ */
int mb_adjust_cfg(struct ptn_3460_config *cfg) int mb_adjust_cfg(struct ptn_3460_config *cfg)
@ -58,9 +61,10 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
return -1; return -1;
} }
/* Set up configuration data according to the hwinfo block we got. */ /* Set up PTN3460 registers based on hwinfo and fixed board-specific parameters: */
/* Use 2 lanes for eDP, no P/N swapping, no ASSR, allow both HBR and RBR modes. */
cfg->dp_interface_ctrl = 0x00; cfg->dp_interface_ctrl = 0x00;
/* Use odd-bus for clock distribution only. */ /* Use odd bus for LVDS clock distribution only. */
cfg->lvds_interface_ctrl1 = 0x01; cfg->lvds_interface_ctrl1 = 0x01;
if (disp_con == PF_DISPLCON_LVDS_DUAL) { if (disp_con == PF_DISPLCON_LVDS_DUAL) {
/* Turn on dual LVDS lane and clock. */ /* Turn on dual LVDS lane and clock. */
@ -70,19 +74,17 @@ int mb_adjust_cfg(struct ptn_3460_config *cfg)
/* Use 18 bits per pixel. */ /* Use 18 bits per pixel. */
cfg->lvds_interface_ctrl1 |= 0x20; cfg->lvds_interface_ctrl1 |= 0x20;
} }
/* No LVDS clock spreading, 300 mV LVDS swing */
/* Set up remaining board-specific LVDS parameters: */
/* No clock spreading, 300 mV LVDS swing. */
cfg->lvds_interface_ctrl2 = 0x03; cfg->lvds_interface_ctrl2 = 0x03;
/* No lane/channel swapping */ /* No LVDS lane/channel swapping */
cfg->lvds_interface_ctrl3 = 0x00; cfg->lvds_interface_ctrl3 = 0x00;
/* Enable VDD to LVDS active delay (16 ms). */ /* Enable VDD to LVDS active delay. */
cfg->t2_delay = 0x01; cfg->t2_delay = 0x01;
/* LVDS to backlight active delay: 200 ms. */ /* LVDS to backlight active delay: 200 ms */
cfg->t3_timing = 0x04; cfg->t3_timing = 0x04;
/* Minimum re-power delay: 500 ms */ /* Minimum re-power delay: 500 ms */
cfg->t12_timing = 0x0a; cfg->t12_timing = 0x0a;
/* Backlight off to LVDS inactive delay: 200 ms. */ /* Backlight off to LVDS inactive delay: 200 ms */
cfg->t4_timing = 0x04; cfg->t4_timing = 0x04;
/* Enable LVDS to VDD inactive delay. */ /* Enable LVDS to VDD inactive delay. */
cfg->t5_delay = 0x01; cfg->t5_delay = 0x01;