3 files changed, 122 insertions, 28 deletions

diff --git a/drivers/pcmcia/topic.h b/drivers/pcmcia/topic.h
index be420bb29113..edccfa5bb400 100644
--- a/drivers/pcmcia/topic.h
+++ b/drivers/pcmcia/topic.h
@@ -101,6 +101,8 @@
 #define  TOPIC97_AVS_AUDIO_CONTROL      0x02
 #define  TOPIC97_AVS_VIDEO_CONTROL      0x01
 
+#define TOPIC_EXCA_IF_CONTROL           0x3e    /* 8 bit */
+#define TOPIC_EXCA_IFC_33V_ENA          0x01
 
 static void topic97_zoom_video(struct pcmcia_socket *sock, int onoff)
 {
@@ -137,4 +139,19 @@ static int topic97_override(struct yenta_socket *socket)
         return 0;
 }
 
+
+static int topic95_override(struct yenta_socket *socket)
+{
+        u8 fctrl;
+
+        /* enable 3.3V support for 16bit cards */
+        fctrl = exca_readb(socket, TOPIC_EXCA_IF_CONTROL);
+        exca_writeb(socket, TOPIC_EXCA_IF_CONTROL, fctrl | TOPIC_EXCA_IFC_33V_ENA);
+
+        /* tell yenta to use exca registers to power 16bit cards */
+        socket->flags |= YENTA_16BIT_POWER_EXCA | YENTA_16BIT_POWER_DF;
+
+        return 0;
+}
+
 #endif /* _LINUX_TOPIC_H */
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c
index 62fd705203fb..0347a29f297b 100644
--- a/drivers/pcmcia/yenta_socket.c
+++ b/drivers/pcmcia/yenta_socket.c
@@ -184,22 +184,52 @@ static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
         return 0;
 }
 
-static int yenta_Vcc_power(u32 control)
+static void yenta_get_power(struct yenta_socket *socket, socket_state_t *state)
 {
-        switch (control & CB_SC_VCC_MASK) {
-        case CB_SC_VCC_5V: return 50;
-        case CB_SC_VCC_3V: return 33;
-        default: return 0;
-        }
-}
+        if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
+            (socket->flags & YENTA_16BIT_POWER_EXCA)) {
+                u8 reg, vcc, vpp;
+
+                reg = exca_readb(socket, I365_POWER);
+                vcc = reg & I365_VCC_MASK;
+                vpp = reg & I365_VPP1_MASK;
+                state->Vcc = state->Vpp = 0;
+
+                if (socket->flags & YENTA_16BIT_POWER_DF) {
+                        if (vcc == I365_VCC_3V)
+                                state->Vcc = 33;
+                        if (vcc == I365_VCC_5V)
+                                state->Vcc = 50;
+                        if (vpp == I365_VPP1_5V)
+                                state->Vpp = state->Vcc;
+                        if (vpp == I365_VPP1_12V)
+                                state->Vpp = 120;
+                } else {
+                        if (reg & I365_VCC_5V) {
+                                state->Vcc = 50;
+                                if (vpp == I365_VPP1_5V)
+                                        state->Vpp = 50;
+                                if (vpp == I365_VPP1_12V)
+                                        state->Vpp = 120;
+                        }
+                }
+        } else {
+                u32 control;
 
-static int yenta_Vpp_power(u32 control)
-{
-        switch (control & CB_SC_VPP_MASK) {
-        case CB_SC_VPP_12V: return 120;
-        case CB_SC_VPP_5V: return 50;
-        case CB_SC_VPP_3V: return 33;
-        default: return 0;
+                control = cb_readl(socket, CB_SOCKET_CONTROL);
+
+                switch (control & CB_SC_VCC_MASK) {
+                case CB_SC_VCC_5V: state->Vcc = 50; break;
+                case CB_SC_VCC_3V: state->Vcc = 33; break;
+                default: state->Vcc = 0;
+                }
+
+                switch (control & CB_SC_VPP_MASK) {
+                case CB_SC_VPP_12V: state->Vpp = 120; break;
+                case CB_SC_VPP_5V: state->Vpp = 50; break;
+                case CB_SC_VPP_3V: state->Vpp = 33; break;
+                default: state->Vpp = 0;
+                }
         }
 }
 
@@ -211,8 +241,7 @@ static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 
         control = cb_readl(socket, CB_SOCKET_CONTROL);
 
-        state->Vcc = yenta_Vcc_power(control);
-        state->Vpp = yenta_Vpp_power(control);
+        yenta_get_power(socket, state);
         state->io_irq = socket->io_irq;
 
         if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
@@ -246,19 +275,54 @@ static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state)
 
 static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
 {
-        u32 reg = 0;    /* CB_SC_STPCLK? */
-        switch (state->Vcc) {
-        case 33: reg = CB_SC_VCC_3V; break;
-        case 50: reg = CB_SC_VCC_5V; break;
-        default: reg = 0; break;
-        }
-        switch (state->Vpp) {
-        case 33:  reg |= CB_SC_VPP_3V; break;
-        case 50:  reg |= CB_SC_VPP_5V; break;
-        case 120: reg |= CB_SC_VPP_12V; break;
+        /* some birdges require to use the ExCA registers to power 16bit cards */
+        if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
+            (socket->flags & YENTA_16BIT_POWER_EXCA)) {
+                u8 reg, old;
+                reg = old = exca_readb(socket, I365_POWER);
+                reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
+
+                /* i82365SL-DF style */
+                if (socket->flags & YENTA_16BIT_POWER_DF) {
+                        switch (state->Vcc) {
+                        case 33: reg |= I365_VCC_3V; break;
+                        case 50: reg |= I365_VCC_5V; break;
+                        default: reg = 0; break;
+                        }
+                        switch (state->Vpp) {
+                        case 33:
+                        case 50: reg |= I365_VPP1_5V; break;
+                        case 120: reg |= I365_VPP1_12V; break;
+                        }
+                } else {
+                        /* i82365SL-B style */
+                        switch (state->Vcc) {
+                        case 50: reg |= I365_VCC_5V; break;
+                        default: reg = 0; break;
+                        }
+                        switch (state->Vpp) {
+                        case 50: reg |= I365_VPP1_5V | I365_VPP2_5V; break;
+                        case 120: reg |= I365_VPP1_12V | I365_VPP2_12V; break;
+                        }
+                }
+
+                if (reg != old)
+                        exca_writeb(socket, I365_POWER, reg);
+        } else {
+                u32 reg = 0;    /* CB_SC_STPCLK? */
+                switch (state->Vcc) {
+                case 33: reg = CB_SC_VCC_3V; break;
+                case 50: reg = CB_SC_VCC_5V; break;
+                default: reg = 0; break;
+                }
+                switch (state->Vpp) {
+                case 33:  reg |= CB_SC_VPP_3V; break;
+                case 50:  reg |= CB_SC_VPP_5V; break;
+                case 120: reg |= CB_SC_VPP_12V; break;
+                }
+                if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
+                        cb_writel(socket, CB_SOCKET_CONTROL, reg);
         }
-        if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
-                cb_writel(socket, CB_SOCKET_CONTROL, reg);
 }
 
 static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
@@ -751,6 +815,7 @@ enum {
         CARDBUS_TYPE_TI12XX,
         CARDBUS_TYPE_TI1250,
         CARDBUS_TYPE_RICOH,
+        CARDBUS_TYPE_TOPIC95,
         CARDBUS_TYPE_TOPIC97,
         CARDBUS_TYPE_O2MICRO,
 };
@@ -789,6 +854,9 @@ static struct cardbus_type cardbus_type[] = {
                 .save_state     = ricoh_save_state,
                 .restore_state  = ricoh_restore_state,
         },
+        [CARDBUS_TYPE_TOPIC95]  = {
+                .override       = topic95_override,
+        },
         [CARDBUS_TYPE_TOPIC97]  = {
                 .override       = topic97_override,
         },
@@ -1196,6 +1264,7 @@ static struct pci_device_id yenta_table [] = {
         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
         CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
 
+        CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
         CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
         CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
 
diff --git a/drivers/pcmcia/yenta_socket.h b/drivers/pcmcia/yenta_socket.h
index 4e637eef2076..4e75e9e258cd 100644
--- a/drivers/pcmcia/yenta_socket.h
+++ b/drivers/pcmcia/yenta_socket.h
@@ -95,6 +95,12 @@
  */
 #define CB_MEM_PAGE(map)        (0x40 + (map))
 
+
+/* control how 16bit cards are powered */
+#define YENTA_16BIT_POWER_EXCA  0x00000001
+#define YENTA_16BIT_POWER_DF    0x00000002
+
+
 struct yenta_socket;
 
 struct cardbus_type {
@@ -113,6 +119,8 @@ struct yenta_socket {
         struct pcmcia_socket socket;
         struct cardbus_type *type;
 
+        u32 flags;
+
         /* for PCI interrupt probing */
         unsigned int probe_status;