302 lines
8.6 KiB
C
302 lines
8.6 KiB
C
/* Driver for Realtek PCI-Express card reader
|
|
*
|
|
* Copyright(c) 2009-2013 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>
|
|
* Roger Tseng <rogerable@realtek.com>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/mfd/rtsx_pci.h>
|
|
|
|
#include "rtsx_pcr.h"
|
|
|
|
static void rts5227_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
|
|
{
|
|
u8 driving_3v3[4][3] = {
|
|
{0x13, 0x13, 0x13},
|
|
{0x96, 0x96, 0x96},
|
|
{0x7F, 0x7F, 0x7F},
|
|
{0x96, 0x96, 0x96},
|
|
};
|
|
u8 driving_1v8[4][3] = {
|
|
{0x99, 0x99, 0x99},
|
|
{0xAA, 0xAA, 0xAA},
|
|
{0xFE, 0xFE, 0xFE},
|
|
{0xB3, 0xB3, 0xB3},
|
|
};
|
|
u8 (*driving)[3], drive_sel;
|
|
|
|
if (voltage == OUTPUT_3V3) {
|
|
driving = driving_3v3;
|
|
drive_sel = pcr->sd30_drive_sel_3v3;
|
|
} else {
|
|
driving = driving_1v8;
|
|
drive_sel = pcr->sd30_drive_sel_1v8;
|
|
}
|
|
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CLK_DRIVE_SEL,
|
|
0xFF, driving[drive_sel][0]);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CMD_DRIVE_SEL,
|
|
0xFF, driving[drive_sel][1]);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DAT_DRIVE_SEL,
|
|
0xFF, driving[drive_sel][2]);
|
|
}
|
|
|
|
static void rts5227_fetch_vendor_settings(struct rtsx_pcr *pcr)
|
|
{
|
|
u32 reg;
|
|
|
|
rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, ®);
|
|
dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
|
|
|
|
if (!rtsx_vendor_setting_valid(reg))
|
|
return;
|
|
|
|
pcr->aspm_en = rtsx_reg_to_aspm(reg);
|
|
pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
|
|
pcr->card_drive_sel &= 0x3F;
|
|
pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg);
|
|
|
|
rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG2, ®);
|
|
dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
|
|
pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
|
|
if (rtsx_reg_check_reverse_socket(reg))
|
|
pcr->flags |= PCR_REVERSE_SOCKET;
|
|
}
|
|
|
|
static void rts5227_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
|
|
{
|
|
/* Set relink_time to 0 */
|
|
rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
|
|
rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
|
|
rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);
|
|
|
|
if (pm_state == HOST_ENTER_S3)
|
|
rtsx_pci_write_register(pcr, PM_CTRL3, 0x10, 0x10);
|
|
|
|
rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
|
|
}
|
|
|
|
static int rts5227_extra_init_hw(struct rtsx_pcr *pcr)
|
|
{
|
|
u16 cap;
|
|
|
|
rtsx_pci_init_cmd(pcr);
|
|
|
|
/* Configure GPIO as output */
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, GPIO_CTL, 0x02, 0x02);
|
|
/* Reset ASPM state to default value */
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
|
|
/* Switch LDO3318 source from DV33 to card_3v3 */
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x00);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x01);
|
|
/* LED shine disabled, set initial shine cycle period */
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OLT_LED_CTL, 0x0F, 0x02);
|
|
/* Configure LTR */
|
|
pcie_capability_read_word(pcr->pci, PCI_EXP_DEVCTL2, &cap);
|
|
if (cap & PCI_EXP_DEVCTL2_LTR_EN)
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LTR_CTL, 0xFF, 0xA3);
|
|
/* Configure OBFF */
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OBFF_CFG, 0x03, 0x03);
|
|
/* Configure driving */
|
|
rts5227_fill_driving(pcr, OUTPUT_3V3);
|
|
/* Configure force_clock_req */
|
|
if (pcr->flags & PCR_REVERSE_SOCKET)
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
|
|
AUTOLOAD_CFG_BASE + 3, 0xB8, 0xB8);
|
|
else
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
|
|
AUTOLOAD_CFG_BASE + 3, 0xB8, 0x88);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x10, 0x00);
|
|
|
|
return rtsx_pci_send_cmd(pcr, 100);
|
|
}
|
|
|
|
static int rts5227_optimize_phy(struct rtsx_pcr *pcr)
|
|
{
|
|
/* Optimize RX sensitivity */
|
|
return rtsx_pci_write_phy_register(pcr, 0x00, 0xBA42);
|
|
}
|
|
|
|
static int rts5227_turn_on_led(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x02);
|
|
}
|
|
|
|
static int rts5227_turn_off_led(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x00);
|
|
}
|
|
|
|
static int rts5227_enable_auto_blink(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x08);
|
|
}
|
|
|
|
static int rts5227_disable_auto_blink(struct rtsx_pcr *pcr)
|
|
{
|
|
return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x00);
|
|
}
|
|
|
|
static int rts5227_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,
|
|
SD_POWER_MASK, SD_PARTIAL_POWER_ON);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
|
|
LDO3318_PWR_MASK, 0x02);
|
|
err = rtsx_pci_send_cmd(pcr, 100);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
/* To avoid too large in-rush current */
|
|
udelay(150);
|
|
|
|
rtsx_pci_init_cmd(pcr);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
|
|
SD_POWER_MASK, SD_POWER_ON);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
|
|
LDO3318_PWR_MASK, 0x06);
|
|
err = rtsx_pci_send_cmd(pcr, 100);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rts5227_card_power_off(struct rtsx_pcr *pcr, int card)
|
|
{
|
|
rtsx_pci_init_cmd(pcr);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
|
|
SD_POWER_MASK | PMOS_STRG_MASK,
|
|
SD_POWER_OFF | PMOS_STRG_400mA);
|
|
rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
|
|
LDO3318_PWR_MASK, 0X00);
|
|
return rtsx_pci_send_cmd(pcr, 100);
|
|
}
|
|
|
|
static int rts5227_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
|
|
{
|
|
int err;
|
|
|
|
if (voltage == OUTPUT_3V3) {
|
|
err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
|
|
if (err < 0)
|
|
return err;
|
|
} else if (voltage == OUTPUT_1V8) {
|
|
err = rtsx_pci_write_phy_register(pcr, 0x11, 0x3C02);
|
|
if (err < 0)
|
|
return err;
|
|
err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C80 | 0x24);
|
|
if (err < 0)
|
|
return err;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* set pad drive */
|
|
rtsx_pci_init_cmd(pcr);
|
|
rts5227_fill_driving(pcr, voltage);
|
|
return rtsx_pci_send_cmd(pcr, 100);
|
|
}
|
|
|
|
static const struct pcr_ops rts5227_pcr_ops = {
|
|
.fetch_vendor_settings = rts5227_fetch_vendor_settings,
|
|
.extra_init_hw = rts5227_extra_init_hw,
|
|
.optimize_phy = rts5227_optimize_phy,
|
|
.turn_on_led = rts5227_turn_on_led,
|
|
.turn_off_led = rts5227_turn_off_led,
|
|
.enable_auto_blink = rts5227_enable_auto_blink,
|
|
.disable_auto_blink = rts5227_disable_auto_blink,
|
|
.card_power_on = rts5227_card_power_on,
|
|
.card_power_off = rts5227_card_power_off,
|
|
.switch_output_voltage = rts5227_switch_output_voltage,
|
|
.cd_deglitch = NULL,
|
|
.conv_clk_and_div_n = NULL,
|
|
.force_power_down = rts5227_force_power_down,
|
|
};
|
|
|
|
/* 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 rts5227_sd_pull_ctl_enable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
|
|
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 rts5227_sd_pull_ctl_disable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
|
|
0,
|
|
};
|
|
|
|
/* MS Pull Control Enable:
|
|
* MS CD ==> pull up
|
|
* others ==> pull down
|
|
*/
|
|
static const u32 rts5227_ms_pull_ctl_enable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
|
|
0,
|
|
};
|
|
|
|
/* MS Pull Control Disable:
|
|
* MS CD ==> pull up
|
|
* others ==> pull down
|
|
*/
|
|
static const u32 rts5227_ms_pull_ctl_disable_tbl[] = {
|
|
RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
|
|
RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
|
|
0,
|
|
};
|
|
|
|
void rts5227_init_params(struct rtsx_pcr *pcr)
|
|
{
|
|
pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
|
|
pcr->num_slots = 2;
|
|
pcr->ops = &rts5227_pcr_ops;
|
|
|
|
pcr->flags = 0;
|
|
pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
|
|
pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
|
|
pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
|
|
pcr->aspm_en = ASPM_L1_EN;
|
|
pcr->tx_initial_phase = SET_CLOCK_PHASE(27, 27, 15);
|
|
pcr->rx_initial_phase = SET_CLOCK_PHASE(30, 7, 7);
|
|
|
|
pcr->sd_pull_ctl_enable_tbl = rts5227_sd_pull_ctl_enable_tbl;
|
|
pcr->sd_pull_ctl_disable_tbl = rts5227_sd_pull_ctl_disable_tbl;
|
|
pcr->ms_pull_ctl_enable_tbl = rts5227_ms_pull_ctl_enable_tbl;
|
|
pcr->ms_pull_ctl_disable_tbl = rts5227_ms_pull_ctl_disable_tbl;
|
|
}
|