X-Git-Url: https://vcs.maemo.org/git/?a=blobdiff_plain;f=hw%2Fads7846.c;fp=hw%2Fads7846.c;h=1c65ffe15ebac994f6ad4dff754d5ea3b2e93f8f;hb=a03c3bde4e288e790eccfb8cd45abd8ecbf467dc;hp=b39c00f51502c3e4428334e292e819666db9899a;hpb=e2ffa1bf065fa199f27d661d495573e9d6059bf1;p=qemu

diff --git a/hw/ads7846.c b/hw/ads7846.c
index b39c00f..1c65ffe 100644
--- a/hw/ads7846.c
+++ b/hw/ads7846.c
@@ -7,11 +7,11 @@
  * This code is licensed under the GNU GPL v2.
  */
 
-#include "hw.h"
-#include "devices.h"
+#include "ssi.h"
 #include "console.h"
 
-struct ads7846_state_s {
+typedef struct {
+    SSISlave ssidev;
     qemu_irq interrupt;
 
     int input[8];
@@ -20,7 +20,7 @@ struct ads7846_state_s {
 
     int cycle;
     int output;
-};
+} ADS7846State;
 
 /* Control-byte bitfields */
 #define CB_PD0		(1 << 0)
@@ -46,22 +46,15 @@ struct ads7846_state_s {
 #define ADS_Z1POS(x, y)	600
 #define ADS_Z2POS(x, y)	(600 + 6000 / ADS_XPOS(x, y))
 
-static void ads7846_int_update(struct ads7846_state_s *s)
+static void ads7846_int_update(ADS7846State *s)
 {
     if (s->interrupt)
         qemu_set_irq(s->interrupt, s->pressure == 0);
 }
 
-uint32_t ads7846_read(void *opaque)
-{
-    struct ads7846_state_s *s = (struct ads7846_state_s *) opaque;
-
-    return s->output;
-}
-
-void ads7846_write(void *opaque, uint32_t value)
+static uint32_t ads7846_transfer(SSISlave *dev, uint32_t value)
 {
-    struct ads7846_state_s *s = (struct ads7846_state_s *) opaque;
+    ADS7846State *s = FROM_SSI_SLAVE(ADS7846State, dev);
 
     switch (s->cycle ++) {
     case 0:
@@ -89,12 +82,13 @@ void ads7846_write(void *opaque, uint32_t value)
         s->cycle = 0;
         break;
     }
+    return s->output;
 }
 
 static void ads7846_ts_event(void *opaque,
                 int x, int y, int z, int buttons_state)
 {
-    struct ads7846_state_s *s = opaque;
+    ADS7846State *s = opaque;
 
     if (buttons_state) {
         x = 0x7fff - x;
@@ -113,7 +107,7 @@ static void ads7846_ts_event(void *opaque,
 
 static void ads7846_save(QEMUFile *f, void *opaque)
 {
-    struct ads7846_state_s *s = (struct ads7846_state_s *) opaque;
+    ADS7846State *s = (ADS7846State *) opaque;
     int i;
 
     for (i = 0; i < 8; i ++)
@@ -125,7 +119,7 @@ static void ads7846_save(QEMUFile *f, void *opaque)
 
 static int ads7846_load(QEMUFile *f, void *opaque, int version_id)
 {
-    struct ads7846_state_s *s = (struct ads7846_state_s *) opaque;
+    ADS7846State *s = (ADS7846State *) opaque;
     int i;
 
     for (i = 0; i < 8; i ++)
@@ -140,14 +134,11 @@ static int ads7846_load(QEMUFile *f, void *opaque, int version_id)
     return 0;
 }
 
-struct ads7846_state_s *ads7846_init(qemu_irq penirq)
+static void ads7846_init(SSISlave *dev)
 {
-    struct ads7846_state_s *s;
-    s = (struct ads7846_state_s *)
-            qemu_mallocz(sizeof(struct ads7846_state_s));
-    memset(s, 0, sizeof(struct ads7846_state_s));
+    ADS7846State *s = FROM_SSI_SLAVE(ADS7846State, dev);
 
-    s->interrupt = penirq;
+    qdev_init_gpio_out(&dev->qdev, &s->interrupt, 1);
 
     s->input[0] = ADS_TEMP0;	/* TEMP0 */
     s->input[2] = ADS_VBAT;	/* VBAT */
@@ -161,6 +152,16 @@ struct ads7846_state_s *ads7846_init(qemu_irq penirq)
     ads7846_int_update(s);
 
     register_savevm("ads7846", -1, 0, ads7846_save, ads7846_load, s);
+}
+
+static SSISlaveInfo ads7846_info = {
+    .init = ads7846_init,
+    .transfer = ads7846_transfer
+};
 
-    return s;
+static void ads7846_register_devices(void)
+{
+    ssi_register_slave("ads7846", sizeof(ADS7846State), &ads7846_info);
 }
+
+device_init(ads7846_register_devices)