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authorPaul Mundt <lethal@linux-sh.org>2011-06-14 12:40:19 +0900
committerPaul Mundt <lethal@linux-sh.org>2011-06-14 12:40:19 +0900
commit61a6976bf19a6cf5dfcf37c3536665b316f22d49 (patch)
tree969831bb2a782454960a82a77d2802f62cc7ed91 /include/linux/serial_sci.h
parente13198894bf6308c097e5678ee315e12b2e1b7a8 (diff)
serial: sh-sci: Abstract register maps.
This takes a bit of a sledgehammer to the horribly CPU subtype ifdef-ridden header and abstracts all of the different register layouts in to distinct types which in turn can be overriden on a per-port basis, or permitted to default to the map matching the port type at probe time. In the process this ultimately fixes up inumerable bugs with mismatches on various CPU types (particularly the legacy ones that were obviously broken years ago and no one noticed) and provides a more tightly coupled and consolidated platform for extending and implementing generic features. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/linux/serial_sci.h')
-rw-r--r--include/linux/serial_sci.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index ecefec7c0b67..4ca130a90ea5 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -58,6 +58,22 @@ enum {
SCIx_NR_IRQS,
};
+enum {
+ SCIx_PROBE_REGTYPE,
+
+ SCIx_SCI_REGTYPE,
+ SCIx_IRDA_REGTYPE,
+ SCIx_SCIFA_REGTYPE,
+ SCIx_SCIFB_REGTYPE,
+ SCIx_SH3_SCIF_REGTYPE,
+ SCIx_SH4_SCIF_REGTYPE,
+ SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE,
+ SCIx_SH4_SCIF_FIFODATA_REGTYPE,
+ SCIx_SH7705_SCIF_REGTYPE,
+
+ SCIx_NR_REGTYPES,
+};
+
#define SCIx_IRQ_MUXED(irq) \
{ \
[SCIx_ERI_IRQ] = (irq), \
@@ -66,8 +82,24 @@ enum {
[SCIx_BRI_IRQ] = (irq), \
}
+/*
+ * SCI register subset common for all port types.
+ * Not all registers will exist on all parts.
+ */
+enum {
+ SCSMR, SCBRR, SCSCR, SCxSR,
+ SCFCR, SCFDR, SCxTDR, SCxRDR,
+ SCLSR, SCTFDR, SCRFDR, SCSPTR,
+
+ SCIx_NR_REGS,
+};
+
struct device;
+struct plat_sci_port_ops {
+ void (*init_pins)(struct uart_port *, unsigned int cflag);
+};
+
/*
* Platform device specific platform_data struct
*/
@@ -87,6 +119,10 @@ struct plat_sci_port {
unsigned int error_mask;
int port_reg;
+ unsigned char regshift;
+ unsigned char regtype;
+
+ struct plat_sci_port_ops *ops;
struct device *dma_dev;