mfd: rtsx: Support RTS5227

Support new model RTS5227.

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>

5 files changed, 246 insertions, 1 deletions

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 8b977f8045ae..b90409c23664 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -9,7 +9,7 @@ obj-$(CONFIG_MFD_88PM805)	+= 88pm805.o 88pm80x.o
 obj-$(CONFIG_MFD_SM501)         += sm501.o
 obj-$(CONFIG_MFD_ASIC3)         += asic3.o tmio_core.o
 
-rtsx_pci-objs                   := rtsx_pcr.o rts5209.o rts5229.o rtl8411.o
+rtsx_pci-objs                   := rtsx_pcr.o rts5209.o rts5229.o rtl8411.o rts5227.o
 obj-$(CONFIG_MFD_RTSX_PCI)      += rtsx_pci.o
 
 obj-$(CONFIG_HTC_EGPIO)         += htc-egpio.o
diff --git a/drivers/mfd/rts5227.c b/drivers/mfd/rts5227.c
new file mode 100644
index 000000000000..fc831dcb1480
--- /dev/null
+++ b/drivers/mfd/rts5227.c
@@ -0,0 +1,234 @@
+/* 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
+ *
+ *   Roger Tseng <rogerable@realtek.com>
+ *   No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/mfd/rtsx_pci.h>
+
+#include "rtsx_pcr.h"
+
+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);
+        /* 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_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 force_clock_req
+         * Maybe We should define 0xFF03 as some name
+         */
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, 0xFF03, 0x08, 0x08);
+        /* Correct driving */
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+                        SD30_CLK_DRIVE_SEL, 0xFF, 0x96);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+                        SD30_CMD_DRIVE_SEL, 0xFF, 0x96);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
+                        SD30_DAT_DRIVE_SEL, 0xFF, 0x96);
+
+        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;
+        u8 drive_sel;
+
+        if (voltage == OUTPUT_3V3) {
+                err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
+                if (err < 0)
+                        return err;
+                drive_sel = 0x96;
+        } 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;
+                drive_sel = 0xB3;
+        } else {
+                return -EINVAL;
+        }
+
+        /* set pad drive */
+        rtsx_pci_init_cmd(pcr);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CLK_DRIVE_SEL,
+                        0xFF, drive_sel);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CMD_DRIVE_SEL,
+                        0xFF, drive_sel);
+        rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DAT_DRIVE_SEL,
+                        0xFF, drive_sel);
+        return rtsx_pci_send_cmd(pcr, 100);
+}
+
+static const struct pcr_ops rts5227_pcr_ops = {
+        .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,
+};
+
+/* 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->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;
+}
diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
index 9016932f0267..822237e322ba 100644
--- a/drivers/mfd/rtsx_pcr.c
+++ b/drivers/mfd/rtsx_pcr.c
@@ -55,6 +55,7 @@ static DEFINE_PCI_DEVICE_TABLE(rtsx_pci_ids) = {
         { PCI_DEVICE(0x10EC, 0x5209), PCI_CLASS_OTHERS << 16, 0xFF0000 },
         { PCI_DEVICE(0x10EC, 0x5229), PCI_CLASS_OTHERS << 16, 0xFF0000 },
         { PCI_DEVICE(0x10EC, 0x5289), PCI_CLASS_OTHERS << 16, 0xFF0000 },
+        { PCI_DEVICE(0x10EC, 0x5227), PCI_CLASS_OTHERS << 16, 0xFF0000 },
         { 0, }
 };
 
@@ -998,6 +999,10 @@ static int rtsx_pci_init_chip(struct rtsx_pcr *pcr)
         case 0x5289:
                 rtl8411_init_params(pcr);
                 break;
+
+        case 0x5227:
+                rts5227_init_params(pcr);
+                break;
         }
 
         dev_dbg(&(pcr->pci->dev), "PID: 0x%04x, IC version: 0x%02x\n",
diff --git a/drivers/mfd/rtsx_pcr.h b/drivers/mfd/rtsx_pcr.h
index 33c210be1daa..2b3ab8a04823 100644
--- a/drivers/mfd/rtsx_pcr.h
+++ b/drivers/mfd/rtsx_pcr.h
@@ -31,5 +31,6 @@
 void rts5209_init_params(struct rtsx_pcr *pcr);
 void rts5229_init_params(struct rtsx_pcr *pcr);
 void rtl8411_init_params(struct rtsx_pcr *pcr);
+void rts5227_init_params(struct rtsx_pcr *pcr);
 
 #endif
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 3f2bf26ca0d1..5d9b81e8aff4 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -581,8 +581,11 @@
 #define CARD_GPIO_DIR                   0xFD57
 #define CARD_GPIO                       0xFD58
 #define CARD_DATA_SOURCE                0xFD5B
+#define SD30_CLK_DRIVE_SEL              0xFD5A
 #define CARD_SELECT                     0xFD5C
 #define SD30_DRIVE_SEL                  0xFD5E
+#define SD30_CMD_DRIVE_SEL              0xFD5E
+#define SD30_DAT_DRIVE_SEL              0xFD5F
 #define CARD_CLK_EN                     0xFD69
 #define SDIO_CTRL                       0xFD6B
 #define CD_PAD_CTL                      0xFD73
@@ -655,6 +658,8 @@
 #define MSGTXDATA3                      0xFE47
 #define MSGTXCTL                        0xFE48
 #define PETXCFG                         0xFE49
+#define LTR_CTL                         0xFE4A
+#define OBFF_CFG                        0xFE4C
 
 #define CDRESUMECTL                     0xFE52
 #define WAKE_SEL_CTL                    0xFE54