From 57cbd777889010c39db892fe6e9f844f26eb3ed9 Mon Sep 17 00:00:00 2001
From: Michael Sevakis <jethead71@rockbox.org>
Date: Mon, 5 May 2008 13:00:08 +0000
Subject: Gigabeat S: Do the controller timing settings a more cleanly.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17379 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/ata.c                            |  8 ++--
 firmware/target/arm/imx31/gigabeat-s/ata-imx31.c  | 48 ++++-------------------
 firmware/target/arm/imx31/gigabeat-s/ata-target.h |  6 +--
 3 files changed, 15 insertions(+), 47 deletions(-)

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index e949f38a9d..1dd05133fe 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -1090,10 +1090,6 @@ static int identify(void)
 #endif
     }
 
-#ifdef ATA_NOTIFY_IDENTIFY_READY
-    ata_identify_ready();
-#endif
-    
     return 0;
 }
 
@@ -1172,6 +1168,10 @@ static int set_features(void)
         }
     }
 
+#ifdef ATA_SET_DEVICE_FEATURES
+    ata_set_pio_timings(pio_mode);
+#endif
+
     return 0;
 }
 
diff --git a/firmware/target/arm/imx31/gigabeat-s/ata-imx31.c b/firmware/target/arm/imx31/gigabeat-s/ata-imx31.c
index 965b447651..92cc048d57 100644
--- a/firmware/target/arm/imx31/gigabeat-s/ata-imx31.c
+++ b/firmware/target/arm/imx31/gigabeat-s/ata-imx31.c
@@ -79,17 +79,18 @@ static const struct ata_pio_timings
     },
 };
 
-static bool initialized = false;
+static int pio_mode = 0; /* Setup mode 0 by default */
 
 /* Setup the timing for PIO mode */
-static void ata_set_pio_mode(int mode)
+void ata_set_pio_timings(int mode)
 {
-    const struct ata_pio_timings * const timings = &pio_timings[mode];
+    while (!(ATA_INTERRUPT_PENDING & ATA_CONTROLLER_IDLE));
 
+    const struct ata_pio_timings * const timings = &pio_timings[mode];
     /* T = period in nanoseconds */
     int T = 1000 * 1000 * 1000 / imx31_clkctl_get_ata_clk();
 
-    while (!(ATA_INTERRUPT_PENDING & ATA_CONTROLLER_IDLE));
+    pio_mode = mode;
 
     ATA_TIME_OFF = 3;
     ATA_TIME_ON = 3;
@@ -128,40 +129,7 @@ void ata_device_init(void)
 {
     ATA_INTF_CONTROL |= ATA_ATA_RST; /* Make sure we're not in reset mode */
 
-    if (!initialized)
-    {
-        initialized = true;
-        /* Setup mode 0 by default */
-        ata_set_pio_mode(0);
-        /* mode may be switched later once identify info is ready in which
-         * case the main driver calls back */
-    }
-    else
-    {
-        /* identify info will be ready */
-        ata_identify_ready();
-    }
-}
-
-void ata_identify_ready(void)
-{
-    const unsigned short* identify_info = ata_get_identify();
-    int mode = 0;
-
-    if (identify_info[53] & (1 << 1))
-    {
-        /* Set up advanced timings */
-        if (identify_info[64] & (1 << 1))
-            mode = 4; /* Mode 0, 1, 2, 3, 4 */
-        else if (identify_info[64] & (1 << 0))
-            mode = 3; /* Mode 0, 1, 2, 3 */
-        else
-            mode = 2; /* Mode 0, 1, 2 */
-    }
-
-    /* If mode changed, actually set the timings */
-    if (mode != 0)
-    {
-        ata_set_pio_mode(mode);
-    }
+    /* mode may be switched later once identify info is ready in which
+     * case the main driver calls back */
+    ata_set_pio_timings(pio_mode);
 }
diff --git a/firmware/target/arm/imx31/gigabeat-s/ata-target.h b/firmware/target/arm/imx31/gigabeat-s/ata-target.h
index 7b61039c7e..6428e9f41f 100644
--- a/firmware/target/arm/imx31/gigabeat-s/ata-target.h
+++ b/firmware/target/arm/imx31/gigabeat-s/ata-target.h
@@ -68,7 +68,7 @@ void ata_reset(void);
 void ata_device_init(void);
 bool ata_is_coldstart(void);
 
-#define ATA_NOTIFY_IDENTIFY_READY
-void ata_identify_ready(void);
+#define ATA_SET_DEVICE_FEATURES
+void ata_set_pio_timings(int mode);
 
-#endif
+#endif /* ATA_TARGET_H */
-- 
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