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-rw-r--r--include/linux/serial_sci.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/include/linux/serial_sci.h b/include/linux/serial_sci.h
index a2afc9fbe186..8bffe9ae2ca0 100644
--- a/include/linux/serial_sci.h
+++ b/include/linux/serial_sci.h
@@ -8,6 +8,8 @@
* Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts)
*/
+#define SCIx_NOT_SUPPORTED (-1)
+
enum {
SCBRR_ALGO_1, /* ((clk + 16 * bps) / (16 * bps) - 1) */
SCBRR_ALGO_2, /* ((clk + 16 * bps) / (32 * bps) - 1) */
@@ -25,6 +27,28 @@ enum {
#define SCSCR_CKE1 (1 << 1)
#define SCSCR_CKE0 (1 << 0)
+/* SCxSR SCI */
+#define SCI_TDRE 0x80
+#define SCI_RDRF 0x40
+#define SCI_ORER 0x20
+#define SCI_FER 0x10
+#define SCI_PER 0x08
+#define SCI_TEND 0x04
+
+#define SCI_DEFAULT_ERROR_MASK (SCI_PER | SCI_FER)
+
+/* SCxSR SCIF */
+#define SCIF_ER 0x0080
+#define SCIF_TEND 0x0040
+#define SCIF_TDFE 0x0020
+#define SCIF_BRK 0x0010
+#define SCIF_FER 0x0008
+#define SCIF_PER 0x0004
+#define SCIF_RDF 0x0002
+#define SCIF_DR 0x0001
+
+#define SCIF_DEFAULT_ERROR_MASK (SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
+
/* Offsets into the sci_port->irqs array */
enum {
SCIx_ERI_IRQ,
@@ -32,6 +56,24 @@ enum {
SCIx_TXI_IRQ,
SCIx_BRI_IRQ,
SCIx_NR_IRQS,
+
+ SCIx_MUX_IRQ = SCIx_NR_IRQS, /* special case */
+};
+
+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) \
@@ -42,8 +84,29 @@ enum {
[SCIx_BRI_IRQ] = (irq), \
}
+#define SCIx_IRQ_IS_MUXED(port) \
+ ((port)->cfg->irqs[SCIx_ERI_IRQ] == \
+ (port)->cfg->irqs[SCIx_RXI_IRQ]) || \
+ ((port)->cfg->irqs[SCIx_ERI_IRQ] && \
+ !(port)->cfg->irqs[SCIx_RXI_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
*/
@@ -56,6 +119,18 @@ struct plat_sci_port {
unsigned int scbrr_algo_id; /* SCBRR calculation algo */
unsigned int scscr; /* SCSCR initialization */
+ /*
+ * Platform overrides if necessary, defaults otherwise.
+ */
+ int overrun_bit;
+ unsigned int error_mask;
+
+ int port_reg;
+ unsigned char regshift;
+ unsigned char regtype;
+
+ struct plat_sci_port_ops *ops;
+
struct device *dma_dev;
unsigned int dma_slave_tx;