Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/sh/kernel/cpu/adc.c b/arch/sh/kernel/cpu/adc.c
new file mode 100644
index 000000000000..da3d6877f93d
--- /dev/null
+++ b/arch/sh/kernel/cpu/adc.c
@@ -0,0 +1,36 @@
+/*
+ * linux/arch/sh/kernel/adc.c -- SH3 on-chip ADC support
+ *
+ *  Copyright (C) 2004  Andriy Skulysh <askulysh@image.kiev.ua>
+ */
+
+#include <linux/module.h>
+#include <asm/adc.h>
+#include <asm/io.h>
+
+
+int adc_single(unsigned int channel)
+{
+        int off;
+        unsigned char csr;
+
+        if (channel >= 8) return -1;
+
+        off = (channel & 0x03) << 2;
+
+        csr = ctrl_inb(ADCSR);
+        csr = channel | ADCSR_ADST | ADCSR_CKS;
+        ctrl_outb(csr, ADCSR);
+
+        do {
+                csr = ctrl_inb(ADCSR);
+        } while ((csr & ADCSR_ADF) == 0);
+
+        csr &= ~(ADCSR_ADF | ADCSR_ADST);
+        ctrl_outb(csr, ADCSR);
+
+        return (((ctrl_inb(ADDRAH + off) << 8) |
+                ctrl_inb(ADDRAL + off)) >> 6);
+}
+
+EXPORT_SYMBOL(adc_single);