mfd: rtsx: Add output voltage switch hook

Different card reader has different method to switch output voltage,
add this callback to let the card reader implement its individual switch
function.
This is needed as rtl8411 has a specific switch output voltage procedure.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 20 insertions, 4 deletions

diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 060b721fcbfb..271b6e5654af 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -158,10 +158,9 @@
 #define SG_TRANS_DATA           (0x02 << 4)
 #define SG_LINK_DESC            (0x03 << 4)
 
-/* SD bank voltage */
-#define SD_IO_3V3               0
-#define SD_IO_1V8               1
-
+/* Output voltage */
+#define OUTPUT_3V3              0
+#define OUTPUT_1V8              1
 
 /* Card Clock Enable Register */
 #define SD_CLK_EN                       0x04
@@ -201,6 +200,20 @@
 #define CHANGE_CLK                      0x01
 
 /* LDO_CTL */
+#define BPP_ASIC_1V7                    0x00
+#define BPP_ASIC_1V8                    0x01
+#define BPP_ASIC_1V9                    0x02
+#define BPP_ASIC_2V0                    0x03
+#define BPP_ASIC_2V7                    0x04
+#define BPP_ASIC_2V8                    0x05
+#define BPP_ASIC_3V2                    0x06
+#define BPP_ASIC_3V3                    0x07
+#define BPP_REG_TUNED18                 0x07
+#define BPP_TUNED18_SHIFT_8402          5
+#define BPP_TUNED18_SHIFT_8411          4
+#define BPP_PAD_MASK                    0x04
+#define BPP_PAD_3V3                     0x04
+#define BPP_PAD_1V8                     0x00
 #define BPP_LDO_POWB                    0x03
 #define BPP_LDO_ON                      0x00
 #define BPP_LDO_SUSPEND                 0x02
@@ -688,6 +701,8 @@ struct pcr_ops {
         int             (*disable_auto_blink)(struct rtsx_pcr *pcr);
         int             (*card_power_on)(struct rtsx_pcr *pcr, int card);
         int             (*card_power_off)(struct rtsx_pcr *pcr, int card);
+        int             (*switch_output_voltage)(struct rtsx_pcr *pcr,
+                                                u8 voltage);
         unsigned int    (*cd_deglitch)(struct rtsx_pcr *pcr);
 };
 
@@ -783,6 +798,7 @@ int rtsx_pci_switch_clock(struct rtsx_pcr *pcr, unsigned int card_clock,
                 u8 ssc_depth, bool initial_mode, bool double_clk, bool vpclk);
 int rtsx_pci_card_power_on(struct rtsx_pcr *pcr, int card);
 int rtsx_pci_card_power_off(struct rtsx_pcr *pcr, int card);
+int rtsx_pci_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage);
 unsigned int rtsx_pci_card_exist(struct rtsx_pcr *pcr);
 void rtsx_pci_complete_unfinished_transfer(struct rtsx_pcr *pcr);