mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 05:08:09 +07:00
88a7ee37f3
Implement different ways of selecting driving capability(a necessary adjustment along with voltage change). It was origionally in device-independent mmc/host/rtsx_pci_sdmmc.c. Moving it here to support devices which may have a different way of adjustment. Signed-off-by: Roger Tseng <rogerable@realtek.com> Reviewed-by: Wei WANG <wei_wang@realsil.com.cn> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
291 lines
7.7 KiB
C
291 lines
7.7 KiB
C
/* Driver for Realtek PCI-Express card reader
|
|
*
|
|
* Copyright(c) 2009 Realtek Semiconductor Corp. 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 as published by the
|
|
* Free Software Foundation; either version 2, or (at your option) any
|
|
* later version.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author:
|
|
* Wei WANG <wei_wang@realsil.com.cn>
|
|
* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/mfd/rtsx_pci.h>
|
|
|
|
#include "rtsx_pcr.h"
|
|
|
|
static u8 rtl8411_get_ic_version(struct rtsx_pcr *pcr)
|
|
{
|
|
u8 val;
|
|
|
|
rtsx_pci_read_register(pcr, SYS_VER, &val);
|
|
return val & 0x0F;
|
|
}
|
|
|
|
static int rtl8411_extra_init_hw(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, CD_PAD_CTL,
|
|
CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
|
|
}
|
|
|
|
static int rtl8411_turn_on_led(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00);
|
|
}
|
|
|
|
static int rtl8411_turn_off_led(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01);
|
|
}
|
|
|
|
static int rtl8411_enable_auto_blink(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
|
|
}
|
|
|
|
static int rtl8411_disable_auto_blink(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
|
|
}
|
|
|
|
static int rtl8411_card_power_on(struct rtsx_pcr *pcr, int card)
|
|
{
|
|
int err;
|
|
|
|
rtsx_pci_init_cmd(pcr);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_CTL,
|
|
BPP_LDO_POWB, BPP_LDO_SUSPEND);
|
|
err = rtsx_pci_send_cmd(pcr, 100);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* To avoid too large in-rush current */
|
|
udelay(150);
|
|
|
|
err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_10_PERCENT_ON);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
udelay(150);
|
|
|
|
err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_15_PERCENT_ON);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
udelay(150);
|
|
|
|
err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_ON);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return rtsx_pci_write_register(pcr, LDO_CTL, BPP_LDO_POWB, BPP_LDO_ON);
|
|
}
|
|
|
|
static int rtl8411_card_power_off(struct rtsx_pcr *pcr, int card)
|
|
{
|
|
int err;
|
|
|
|
err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_OFF);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return rtsx_pci_write_register(pcr, LDO_CTL,
|
|
BPP_LDO_POWB, BPP_LDO_SUSPEND);
|
|
}
|
|
|
|
static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
|
|
{
|
|
u8 mask, val;
|
|
int err;
|
|
|
|
mask = (BPP_REG_TUNED18 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_MASK;
|
|
if (voltage == OUTPUT_3V3) {
|
|
err = rtsx_pci_write_register(pcr,
|
|
SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D);
|
|
if (err < 0)
|
|
return err;
|
|
val = (BPP_ASIC_3V3 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_3V3;
|
|
} else if (voltage == OUTPUT_1V8) {
|
|
err = rtsx_pci_write_register(pcr,
|
|
SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B);
|
|
if (err < 0)
|
|
return err;
|
|
val = (BPP_ASIC_1V8 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_1V8;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
|
|
}
|
|
|
|
static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr *pcr)
|
|
{
|
|
unsigned int card_exist;
|
|
|
|
card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
|
|
card_exist &= CARD_EXIST;
|
|
if (!card_exist) {
|
|
/* Enable card CD */
|
|
rtsx_pci_write_register(pcr, CD_PAD_CTL,
|
|
CD_DISABLE_MASK, CD_ENABLE);
|
|
/* Enable card interrupt */
|
|
rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x00);
|
|
return 0;
|
|
}
|
|
|
|
if (hweight32(card_exist) > 1) {
|
|
rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
|
|
msleep(100);
|
|
|
|
card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
|
|
if (card_exist & MS_EXIST)
|
|
card_exist = MS_EXIST;
|
|
else if (card_exist & SD_EXIST)
|
|
card_exist = SD_EXIST;
|
|
else
|
|
card_exist = 0;
|
|
|
|
rtsx_pci_write_register(pcr, CARD_PWR_CTL,
|
|
BPP_POWER_MASK, BPP_POWER_OFF);
|
|
|
|
dev_dbg(&(pcr->pci->dev),
|
|
"After CD deglitch, card_exist = 0x%x\n",
|
|
card_exist);
|
|
}
|
|
|
|
if (card_exist & MS_EXIST) {
|
|
/* Disable SD interrupt */
|
|
rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x40);
|
|
rtsx_pci_write_register(pcr, CD_PAD_CTL,
|
|
CD_DISABLE_MASK, MS_CD_EN_ONLY);
|
|
} else if (card_exist & SD_EXIST) {
|
|
/* Disable MS interrupt */
|
|
rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x80);
|
|
rtsx_pci_write_register(pcr, CD_PAD_CTL,
|
|
CD_DISABLE_MASK, SD_CD_EN_ONLY);
|
|
}
|
|
|
|
return card_exist;
|
|
}
|
|
|
|
static int rtl8411_conv_clk_and_div_n(int input, int dir)
|
|
{
|
|
int output;
|
|
|
|
if (dir == CLK_TO_DIV_N)
|
|
output = input * 4 / 5 - 2;
|
|
else
|
|
output = (input + 2) * 5 / 4;
|
|
|
|
return output;
|
|
}
|
|
|
|
static const struct pcr_ops rtl8411_pcr_ops = {
|
|
.extra_init_hw = rtl8411_extra_init_hw,
|
|
.optimize_phy = NULL,
|
|
.turn_on_led = rtl8411_turn_on_led,
|
|
.turn_off_led = rtl8411_turn_off_led,
|
|
.enable_auto_blink = rtl8411_enable_auto_blink,
|
|
.disable_auto_blink = rtl8411_disable_auto_blink,
|
|
.card_power_on = rtl8411_card_power_on,
|
|
.card_power_off = rtl8411_card_power_off,
|
|
.switch_output_voltage = rtl8411_switch_output_voltage,
|
|
.cd_deglitch = rtl8411_cd_deglitch,
|
|
.conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
|
|
};
|
|
|
|
/* SD Pull Control Enable:
|
|
* SD_DAT[3:0] ==> pull up
|
|
* SD_CD ==> pull up
|
|
* SD_WP ==> pull up
|
|
* SD_CMD ==> pull up
|
|
* SD_CLK ==> pull down
|
|
*/
|
|
static const u32 rtl8411_sd_pull_ctl_enable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0xA9),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x09),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
|
|
0,
|
|
};
|
|
|
|
/* SD Pull Control Disable:
|
|
* SD_DAT[3:0] ==> pull down
|
|
* SD_CD ==> pull up
|
|
* SD_WP ==> pull down
|
|
* SD_CMD ==> pull down
|
|
* SD_CLK ==> pull down
|
|
*/
|
|
static const u32 rtl8411_sd_pull_ctl_disable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
|
|
0,
|
|
};
|
|
|
|
/* MS Pull Control Enable:
|
|
* MS CD ==> pull up
|
|
* others ==> pull down
|
|
*/
|
|
static const u32 rtl8411_ms_pull_ctl_enable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
|
|
0,
|
|
};
|
|
|
|
/* MS Pull Control Disable:
|
|
* MS CD ==> pull up
|
|
* others ==> pull down
|
|
*/
|
|
static const u32 rtl8411_ms_pull_ctl_disable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
|
|
0,
|
|
};
|
|
|
|
void rtl8411_init_params(struct rtsx_pcr *pcr)
|
|
{
|
|
pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
|
|
pcr->num_slots = 2;
|
|
pcr->ops = &rtl8411_pcr_ops;
|
|
|
|
pcr->ic_version = rtl8411_get_ic_version(pcr);
|
|
pcr->sd_pull_ctl_enable_tbl = rtl8411_sd_pull_ctl_enable_tbl;
|
|
pcr->sd_pull_ctl_disable_tbl = rtl8411_sd_pull_ctl_disable_tbl;
|
|
pcr->ms_pull_ctl_enable_tbl = rtl8411_ms_pull_ctl_enable_tbl;
|
|
pcr->ms_pull_ctl_disable_tbl = rtl8411_ms_pull_ctl_disable_tbl;
|
|
}
|