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@@ -54,10 +54,6 @@
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#include <asm/sh_bios.h>
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#endif
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-#ifdef CONFIG_H8300
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-#include <asm/gpio.h>
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-#endif
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-
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#include "sh-sci.h"
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struct sci_port {
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@@ -66,12 +62,6 @@ struct sci_port {
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/* Platform configuration */
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struct plat_sci_port *cfg;
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- /* Port enable callback */
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- void (*enable)(struct uart_port *port);
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-
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- /* Port disable callback */
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- void (*disable)(struct uart_port *port);
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-
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/* Break timer */
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struct timer_list break_timer;
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int break_flag;
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@@ -81,6 +71,8 @@ struct sci_port {
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/* Function clock */
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struct clk *fclk;
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+ char *irqstr[SCIx_NR_IRQS];
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+
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struct dma_chan *chan_tx;
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struct dma_chan *chan_rx;
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@@ -121,6 +113,278 @@ to_sci_port(struct uart_port *uart)
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return container_of(uart, struct sci_port, port);
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}
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+struct plat_sci_reg {
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+ u8 offset, size;
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+};
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+
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+/* Helper for invalidating specific entries of an inherited map. */
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+#define sci_reg_invalid { .offset = 0, .size = 0 }
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+
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+static struct plat_sci_reg sci_regmap[SCIx_NR_REGTYPES][SCIx_NR_REGS] = {
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+ [SCIx_PROBE_REGTYPE] = {
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+ [0 ... SCIx_NR_REGS - 1] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common SCI definitions, dependent on the port's regshift
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+ * value.
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+ */
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+ [SCIx_SCI_REGTYPE] = {
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+ [SCSMR] = { 0x00, 8 },
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+ [SCBRR] = { 0x01, 8 },
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+ [SCSCR] = { 0x02, 8 },
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+ [SCxTDR] = { 0x03, 8 },
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+ [SCxSR] = { 0x04, 8 },
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+ [SCxRDR] = { 0x05, 8 },
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+ [SCFCR] = sci_reg_invalid,
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+ [SCFDR] = sci_reg_invalid,
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common definitions for legacy IrDA ports, dependent on
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+ * regshift value.
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+ */
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+ [SCIx_IRDA_REGTYPE] = {
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+ [SCSMR] = { 0x00, 8 },
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+ [SCBRR] = { 0x01, 8 },
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+ [SCSCR] = { 0x02, 8 },
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+ [SCxTDR] = { 0x03, 8 },
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+ [SCxSR] = { 0x04, 8 },
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+ [SCxRDR] = { 0x05, 8 },
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+ [SCFCR] = { 0x06, 8 },
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+ [SCFDR] = { 0x07, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common SCIFA definitions.
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+ */
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+ [SCIx_SCIFA_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x20, 8 },
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+ [SCxSR] = { 0x14, 16 },
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+ [SCxRDR] = { 0x24, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common SCIFB definitions.
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+ */
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+ [SCIx_SCIFB_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x40, 8 },
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+ [SCxSR] = { 0x14, 16 },
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+ [SCxRDR] = { 0x60, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common SH-3 SCIF definitions.
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+ */
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+ [SCIx_SH3_SCIF_REGTYPE] = {
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+ [SCSMR] = { 0x00, 8 },
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+ [SCBRR] = { 0x02, 8 },
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+ [SCSCR] = { 0x04, 8 },
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+ [SCxTDR] = { 0x06, 8 },
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+ [SCxSR] = { 0x08, 16 },
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+ [SCxRDR] = { 0x0a, 8 },
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+ [SCFCR] = { 0x0c, 8 },
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+ [SCFDR] = { 0x0e, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+
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+ /*
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+ * Common SH-4(A) SCIF(B) definitions.
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+ */
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+ [SCIx_SH4_SCIF_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x0c, 8 },
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+ [SCxSR] = { 0x10, 16 },
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+ [SCxRDR] = { 0x14, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = { 0x20, 16 },
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+ [SCLSR] = { 0x24, 16 },
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+ },
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+
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+ /*
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+ * Common SH-4(A) SCIF(B) definitions for ports without an SCSPTR
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+ * register.
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+ */
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+ [SCIx_SH4_SCIF_NO_SCSPTR_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x0c, 8 },
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+ [SCxSR] = { 0x10, 16 },
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+ [SCxRDR] = { 0x14, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = { 0x24, 16 },
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+ },
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+
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+ /*
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+ * Common SH-4(A) SCIF(B) definitions for ports with FIFO data
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+ * count registers.
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+ */
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+ [SCIx_SH4_SCIF_FIFODATA_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x0c, 8 },
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+ [SCxSR] = { 0x10, 16 },
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+ [SCxRDR] = { 0x14, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = { 0x1c, 16 }, /* aliased to SCFDR */
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+ [SCRFDR] = { 0x20, 16 },
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+ [SCSPTR] = { 0x24, 16 },
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+ [SCLSR] = { 0x28, 16 },
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+ },
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+
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+ /*
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+ * SH7705-style SCIF(B) ports, lacking both SCSPTR and SCLSR
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+ * registers.
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+ */
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+ [SCIx_SH7705_SCIF_REGTYPE] = {
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+ [SCSMR] = { 0x00, 16 },
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+ [SCBRR] = { 0x04, 8 },
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+ [SCSCR] = { 0x08, 16 },
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+ [SCxTDR] = { 0x20, 8 },
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+ [SCxSR] = { 0x14, 16 },
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+ [SCxRDR] = { 0x24, 8 },
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+ [SCFCR] = { 0x18, 16 },
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+ [SCFDR] = { 0x1c, 16 },
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+ [SCTFDR] = sci_reg_invalid,
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+ [SCRFDR] = sci_reg_invalid,
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+ [SCSPTR] = sci_reg_invalid,
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+ [SCLSR] = sci_reg_invalid,
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+ },
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+};
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+
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+#define sci_getreg(up, offset) (sci_regmap[to_sci_port(up)->cfg->regtype] + offset)
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+
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+/*
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+ * The "offset" here is rather misleading, in that it refers to an enum
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+ * value relative to the port mapping rather than the fixed offset
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+ * itself, which needs to be manually retrieved from the platform's
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+ * register map for the given port.
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+ */
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+static unsigned int sci_serial_in(struct uart_port *p, int offset)
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+{
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+ struct plat_sci_reg *reg = sci_getreg(p, offset);
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+
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+ if (reg->size == 8)
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+ return ioread8(p->membase + (reg->offset << p->regshift));
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+ else if (reg->size == 16)
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+ return ioread16(p->membase + (reg->offset << p->regshift));
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+ else
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+ WARN(1, "Invalid register access\n");
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+
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+ return 0;
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+}
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+
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+static void sci_serial_out(struct uart_port *p, int offset, int value)
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+{
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+ struct plat_sci_reg *reg = sci_getreg(p, offset);
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+
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+ if (reg->size == 8)
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+ iowrite8(value, p->membase + (reg->offset << p->regshift));
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+ else if (reg->size == 16)
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+ iowrite16(value, p->membase + (reg->offset << p->regshift));
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+ else
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+ WARN(1, "Invalid register access\n");
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+}
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+
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+#define sci_in(up, offset) (up->serial_in(up, offset))
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+#define sci_out(up, offset, value) (up->serial_out(up, offset, value))
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+
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+static int sci_probe_regmap(struct plat_sci_port *cfg)
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+{
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+ switch (cfg->type) {
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+ case PORT_SCI:
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+ cfg->regtype = SCIx_SCI_REGTYPE;
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+ break;
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+ case PORT_IRDA:
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+ cfg->regtype = SCIx_IRDA_REGTYPE;
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+ break;
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+ case PORT_SCIFA:
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+ cfg->regtype = SCIx_SCIFA_REGTYPE;
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+ break;
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+ case PORT_SCIFB:
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+ cfg->regtype = SCIx_SCIFB_REGTYPE;
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+ break;
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+ case PORT_SCIF:
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+ /*
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+ * The SH-4 is a bit of a misnomer here, although that's
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+ * where this particular port layout originated. This
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+ * configuration (or some slight variation thereof)
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+ * remains the dominant model for all SCIFs.
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+ */
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+ cfg->regtype = SCIx_SH4_SCIF_REGTYPE;
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+ break;
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+ default:
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+ printk(KERN_ERR "Can't probe register map for given port\n");
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+ return -EINVAL;
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+ }
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+
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+ return 0;
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+}
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+
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+static void sci_port_enable(struct sci_port *sci_port)
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+{
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+ if (!sci_port->port.dev)
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+ return;
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+
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+ pm_runtime_get_sync(sci_port->port.dev);
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+
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+ clk_enable(sci_port->iclk);
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+ sci_port->port.uartclk = clk_get_rate(sci_port->iclk);
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+ clk_enable(sci_port->fclk);
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+}
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+
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+static void sci_port_disable(struct sci_port *sci_port)
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+{
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+ if (!sci_port->port.dev)
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+ return;
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+
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+ clk_disable(sci_port->fclk);
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+ clk_disable(sci_port->iclk);
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+
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+ pm_runtime_put_sync(sci_port->port.dev);
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+}
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+
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#if defined(CONFIG_CONSOLE_POLL) || defined(CONFIG_SERIAL_SH_SCI_CONSOLE)
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#ifdef CONFIG_CONSOLE_POLL
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@@ -164,223 +428,76 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
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}
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#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
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-#if defined(__H8300H__) || defined(__H8300S__)
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static void sci_init_pins(struct uart_port *port, unsigned int cflag)
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{
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- int ch = (port->mapbase - SMR0) >> 3;
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-
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- /* set DDR regs */
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- H8300_GPIO_DDR(h8300_sci_pins[ch].port,
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- h8300_sci_pins[ch].rx,
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- H8300_GPIO_INPUT);
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- H8300_GPIO_DDR(h8300_sci_pins[ch].port,
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- h8300_sci_pins[ch].tx,
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- H8300_GPIO_OUTPUT);
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-
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- /* tx mark output*/
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- H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx;
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-}
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-#elif defined(CONFIG_CPU_SUBTYPE_SH7710) || defined(CONFIG_CPU_SUBTYPE_SH7712)
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-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
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-{
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- if (port->mapbase == 0xA4400000) {
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- __raw_writew(__raw_readw(PACR) & 0xffc0, PACR);
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- __raw_writew(__raw_readw(PBCR) & 0x0fff, PBCR);
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- } else if (port->mapbase == 0xA4410000)
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- __raw_writew(__raw_readw(PBCR) & 0xf003, PBCR);
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-}
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-#elif defined(CONFIG_CPU_SUBTYPE_SH7720) || defined(CONFIG_CPU_SUBTYPE_SH7721)
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-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
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-{
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- unsigned short data;
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-
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- if (cflag & CRTSCTS) {
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- /* enable RTS/CTS */
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- if (port->mapbase == 0xa4430000) { /* SCIF0 */
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- /* Clear PTCR bit 9-2; enable all scif pins but sck */
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- data = __raw_readw(PORT_PTCR);
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- __raw_writew((data & 0xfc03), PORT_PTCR);
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- } else if (port->mapbase == 0xa4438000) { /* SCIF1 */
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- /* Clear PVCR bit 9-2 */
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- data = __raw_readw(PORT_PVCR);
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- __raw_writew((data & 0xfc03), PORT_PVCR);
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- }
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- } else {
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- if (port->mapbase == 0xa4430000) { /* SCIF0 */
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- /* Clear PTCR bit 5-2; enable only tx and rx */
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- data = __raw_readw(PORT_PTCR);
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- __raw_writew((data & 0xffc3), PORT_PTCR);
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- } else if (port->mapbase == 0xa4438000) { /* SCIF1 */
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- /* Clear PVCR bit 5-2 */
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- data = __raw_readw(PORT_PVCR);
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- __raw_writew((data & 0xffc3), PORT_PVCR);
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- }
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- }
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-}
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-#elif defined(CONFIG_CPU_SH3)
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-/* For SH7705, SH7706, SH7707, SH7709, SH7709A, SH7729 */
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-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
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-{
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- unsigned short data;
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-
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- /* We need to set SCPCR to enable RTS/CTS */
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- data = __raw_readw(SCPCR);
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- /* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/
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- __raw_writew(data & 0x0fcf, SCPCR);
|
|
|
-
|
|
|
- if (!(cflag & CRTSCTS)) {
|
|
|
- /* We need to set SCPCR to enable RTS/CTS */
|
|
|
- data = __raw_readw(SCPCR);
|
|
|
- /* Clear out SCP7MD1,0, SCP4MD1,0,
|
|
|
- Set SCP6MD1,0 = {01} (output) */
|
|
|
- __raw_writew((data & 0x0fcf) | 0x1000, SCPCR);
|
|
|
+ struct sci_port *s = to_sci_port(port);
|
|
|
+ struct plat_sci_reg *reg = sci_regmap[s->cfg->regtype] + SCSPTR;
|
|
|
|
|
|
- data = __raw_readb(SCPDR);
|
|
|
- /* Set /RTS2 (bit6) = 0 */
|
|
|
- __raw_writeb(data & 0xbf, SCPDR);
|
|
|
+ /*
|
|
|
+ * Use port-specific handler if provided.
|
|
|
+ */
|
|
|
+ if (s->cfg->ops && s->cfg->ops->init_pins) {
|
|
|
+ s->cfg->ops->init_pins(port, cflag);
|
|
|
+ return;
|
|
|
}
|
|
|
-}
|
|
|
-#elif defined(CONFIG_CPU_SUBTYPE_SH7722)
|
|
|
-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
|
|
|
-{
|
|
|
- unsigned short data;
|
|
|
|
|
|
- if (port->mapbase == 0xffe00000) {
|
|
|
- data = __raw_readw(PSCR);
|
|
|
- data &= ~0x03cf;
|
|
|
- if (!(cflag & CRTSCTS))
|
|
|
- data |= 0x0340;
|
|
|
+ /*
|
|
|
+ * For the generic path SCSPTR is necessary. Bail out if that's
|
|
|
+ * unavailable, too.
|
|
|
+ */
|
|
|
+ if (!reg->size)
|
|
|
+ return;
|
|
|
|
|
|
- __raw_writew(data, PSCR);
|
|
|
- }
|
|
|
-}
|
|
|
-#elif defined(CONFIG_CPU_SUBTYPE_SH7757) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7763) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7780) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7785) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7786) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SHX3)
|
|
|
-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
|
|
|
-{
|
|
|
- if (!(cflag & CRTSCTS))
|
|
|
- __raw_writew(0x0080, SCSPTR0); /* Set RTS = 1 */
|
|
|
-}
|
|
|
-#elif defined(CONFIG_CPU_SH4) && !defined(CONFIG_CPU_SH4A)
|
|
|
-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
|
|
|
-{
|
|
|
if (!(cflag & CRTSCTS))
|
|
|
- __raw_writew(0x0080, SCSPTR2); /* Set RTS = 1 */
|
|
|
+ sci_out(port, SCSPTR, 0x0080); /* Set RTS = 1 */
|
|
|
}
|
|
|
-#else
|
|
|
-static inline void sci_init_pins(struct uart_port *port, unsigned int cflag)
|
|
|
-{
|
|
|
- /* Nothing to do */
|
|
|
-}
|
|
|
-#endif
|
|
|
|
|
|
-#if defined(CONFIG_CPU_SUBTYPE_SH7760) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7780) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7785) || \
|
|
|
- defined(CONFIG_CPU_SUBTYPE_SH7786)
|
|
|
-static int scif_txfill(struct uart_port *port)
|
|
|
+static int sci_txfill(struct uart_port *port)
|
|
|
{
|
|
|
- return sci_in(port, SCTFDR) & 0xff;
|
|
|
-}
|
|
|
+ struct plat_sci_reg *reg;
|
|
|
|
|
|
-static int scif_txroom(struct uart_port *port)
|
|
|
-{
|
|
|
- return SCIF_TXROOM_MAX - scif_txfill(port);
|
|
|
-}
|
|
|
-
|
|
|
-static int scif_rxfill(struct uart_port *port)
|
|
|
-{
|
|
|
- return sci_in(port, SCRFDR) & 0xff;
|
|
|
-}
|
|
|
-#elif defined(CONFIG_CPU_SUBTYPE_SH7763)
|
|
|
-static int scif_txfill(struct uart_port *port)
|
|
|
-{
|
|
|
- if (port->mapbase == 0xffe00000 ||
|
|
|
- port->mapbase == 0xffe08000)
|
|
|
- /* SCIF0/1*/
|
|
|
+ reg = sci_getreg(port, SCTFDR);
|
|
|
+ if (reg->size)
|
|
|
return sci_in(port, SCTFDR) & 0xff;
|
|
|
- else
|
|
|
- /* SCIF2 */
|
|
|
+
|
|
|
+ reg = sci_getreg(port, SCFDR);
|
|
|
+ if (reg->size)
|
|
|
return sci_in(port, SCFDR) >> 8;
|
|
|
-}
|
|
|
|
|
|
-static int scif_txroom(struct uart_port *port)
|
|
|
-{
|
|
|
- if (port->mapbase == 0xffe00000 ||
|
|
|
- port->mapbase == 0xffe08000)
|
|
|
- /* SCIF0/1*/
|
|
|
- return SCIF_TXROOM_MAX - scif_txfill(port);
|
|
|
- else
|
|
|
- /* SCIF2 */
|
|
|
- return SCIF2_TXROOM_MAX - scif_txfill(port);
|
|
|
+ return !(sci_in(port, SCxSR) & SCI_TDRE);
|
|
|
}
|
|
|
|
|
|
-static int scif_rxfill(struct uart_port *port)
|
|
|
-{
|
|
|
- if ((port->mapbase == 0xffe00000) ||
|
|
|
- (port->mapbase == 0xffe08000)) {
|
|
|
- /* SCIF0/1*/
|
|
|
- return sci_in(port, SCRFDR) & 0xff;
|
|
|
- } else {
|
|
|
- /* SCIF2 */
|
|
|
- return sci_in(port, SCFDR) & SCIF2_RFDC_MASK;
|
|
|
- }
|
|
|
-}
|
|
|
-#elif defined(CONFIG_ARCH_SH7372)
|
|
|
-static int scif_txfill(struct uart_port *port)
|
|
|
+static int sci_txroom(struct uart_port *port)
|
|
|
{
|
|
|
- if (port->type == PORT_SCIFA)
|
|
|
- return sci_in(port, SCFDR) >> 8;
|
|
|
- else
|
|
|
- return sci_in(port, SCTFDR);
|
|
|
+ return port->fifosize - sci_txfill(port);
|
|
|
}
|
|
|
|
|
|
-static int scif_txroom(struct uart_port *port)
|
|
|
+static int sci_rxfill(struct uart_port *port)
|
|
|
{
|
|
|
- return port->fifosize - scif_txfill(port);
|
|
|
-}
|
|
|
+ struct plat_sci_reg *reg;
|
|
|
|
|
|
-static int scif_rxfill(struct uart_port *port)
|
|
|
-{
|
|
|
- if (port->type == PORT_SCIFA)
|
|
|
- return sci_in(port, SCFDR) & SCIF_RFDC_MASK;
|
|
|
- else
|
|
|
- return sci_in(port, SCRFDR);
|
|
|
-}
|
|
|
-#else
|
|
|
-static int scif_txfill(struct uart_port *port)
|
|
|
-{
|
|
|
- return sci_in(port, SCFDR) >> 8;
|
|
|
-}
|
|
|
+ reg = sci_getreg(port, SCRFDR);
|
|
|
+ if (reg->size)
|
|
|
+ return sci_in(port, SCRFDR) & 0xff;
|
|
|
|
|
|
-static int scif_txroom(struct uart_port *port)
|
|
|
-{
|
|
|
- return SCIF_TXROOM_MAX - scif_txfill(port);
|
|
|
-}
|
|
|
+ reg = sci_getreg(port, SCFDR);
|
|
|
+ if (reg->size)
|
|
|
+ return sci_in(port, SCFDR) & ((port->fifosize << 1) - 1);
|
|
|
|
|
|
-static int scif_rxfill(struct uart_port *port)
|
|
|
-{
|
|
|
- return sci_in(port, SCFDR) & SCIF_RFDC_MASK;
|
|
|
+ return (sci_in(port, SCxSR) & SCxSR_RDxF(port)) != 0;
|
|
|
}
|
|
|
-#endif
|
|
|
|
|
|
-static int sci_txfill(struct uart_port *port)
|
|
|
+/*
|
|
|
+ * SCI helper for checking the state of the muxed port/RXD pins.
|
|
|
+ */
|
|
|
+static inline int sci_rxd_in(struct uart_port *port)
|
|
|
{
|
|
|
- return !(sci_in(port, SCxSR) & SCI_TDRE);
|
|
|
-}
|
|
|
+ struct sci_port *s = to_sci_port(port);
|
|
|
|
|
|
-static int sci_txroom(struct uart_port *port)
|
|
|
-{
|
|
|
- return !sci_txfill(port);
|
|
|
-}
|
|
|
+ if (s->cfg->port_reg <= 0)
|
|
|
+ return 1;
|
|
|
|
|
|
-static int sci_rxfill(struct uart_port *port)
|
|
|
-{
|
|
|
- return (sci_in(port, SCxSR) & SCxSR_RDxF(port)) != 0;
|
|
|
+ return !!__raw_readb(s->cfg->port_reg);
|
|
|
}
|
|
|
|
|
|
/* ********************************************************************** *
|
|
@@ -406,10 +523,7 @@ static void sci_transmit_chars(struct uart_port *port)
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
- if (port->type == PORT_SCI)
|
|
|
- count = sci_txroom(port);
|
|
|
- else
|
|
|
- count = scif_txroom(port);
|
|
|
+ count = sci_txroom(port);
|
|
|
|
|
|
do {
|
|
|
unsigned char c;
|
|
@@ -464,13 +578,8 @@ static void sci_receive_chars(struct uart_port *port)
|
|
|
return;
|
|
|
|
|
|
while (1) {
|
|
|
- if (port->type == PORT_SCI)
|
|
|
- count = sci_rxfill(port);
|
|
|
- else
|
|
|
- count = scif_rxfill(port);
|
|
|
-
|
|
|
/* Don't copy more bytes than there is room for in the buffer */
|
|
|
- count = tty_buffer_request_room(tty, count);
|
|
|
+ count = tty_buffer_request_room(tty, sci_rxfill(port));
|
|
|
|
|
|
/* If for any reason we can't copy more data, we're done! */
|
|
|
if (count == 0)
|
|
@@ -561,8 +670,7 @@ static void sci_break_timer(unsigned long data)
|
|
|
{
|
|
|
struct sci_port *port = (struct sci_port *)data;
|
|
|
|
|
|
- if (port->enable)
|
|
|
- port->enable(&port->port);
|
|
|
+ sci_port_enable(port);
|
|
|
|
|
|
if (sci_rxd_in(&port->port) == 0) {
|
|
|
port->break_flag = 1;
|
|
@@ -574,8 +682,7 @@ static void sci_break_timer(unsigned long data)
|
|
|
} else
|
|
|
port->break_flag = 0;
|
|
|
|
|
|
- if (port->disable)
|
|
|
- port->disable(&port->port);
|
|
|
+ sci_port_disable(port);
|
|
|
}
|
|
|
|
|
|
static int sci_handle_errors(struct uart_port *port)
|
|
@@ -583,13 +690,19 @@ static int sci_handle_errors(struct uart_port *port)
|
|
|
int copied = 0;
|
|
|
unsigned short status = sci_in(port, SCxSR);
|
|
|
struct tty_struct *tty = port->state->port.tty;
|
|
|
+ struct sci_port *s = to_sci_port(port);
|
|
|
|
|
|
- if (status & SCxSR_ORER(port)) {
|
|
|
- /* overrun error */
|
|
|
- if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
|
|
|
- copied++;
|
|
|
+ /*
|
|
|
+ * Handle overruns, if supported.
|
|
|
+ */
|
|
|
+ if (s->cfg->overrun_bit != SCIx_NOT_SUPPORTED) {
|
|
|
+ if (status & (1 << s->cfg->overrun_bit)) {
|
|
|
+ /* overrun error */
|
|
|
+ if (tty_insert_flip_char(tty, 0, TTY_OVERRUN))
|
|
|
+ copied++;
|
|
|
|
|
|
- dev_notice(port->dev, "overrun error");
|
|
|
+ dev_notice(port->dev, "overrun error");
|
|
|
+ }
|
|
|
}
|
|
|
|
|
|
if (status & SCxSR_FER(port)) {
|
|
@@ -637,12 +750,15 @@ static int sci_handle_errors(struct uart_port *port)
|
|
|
static int sci_handle_fifo_overrun(struct uart_port *port)
|
|
|
{
|
|
|
struct tty_struct *tty = port->state->port.tty;
|
|
|
+ struct sci_port *s = to_sci_port(port);
|
|
|
+ struct plat_sci_reg *reg;
|
|
|
int copied = 0;
|
|
|
|
|
|
- if (port->type != PORT_SCIF)
|
|
|
+ reg = sci_getreg(port, SCLSR);
|
|
|
+ if (!reg->size)
|
|
|
return 0;
|
|
|
|
|
|
- if ((sci_in(port, SCLSR) & SCIF_ORER) != 0) {
|
|
|
+ if ((sci_in(port, SCLSR) & (1 << s->cfg->overrun_bit))) {
|
|
|
sci_out(port, SCLSR, 0);
|
|
|
|
|
|
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
|
|
@@ -840,74 +956,102 @@ static int sci_notifier(struct notifier_block *self,
|
|
|
return NOTIFY_OK;
|
|
|
}
|
|
|
|
|
|
-static void sci_clk_enable(struct uart_port *port)
|
|
|
-{
|
|
|
- struct sci_port *sci_port = to_sci_port(port);
|
|
|
-
|
|
|
- pm_runtime_get_sync(port->dev);
|
|
|
+static struct sci_irq_desc {
|
|
|
+ const char *desc;
|
|
|
+ irq_handler_t handler;
|
|
|
+} sci_irq_desc[] = {
|
|
|
+ /*
|
|
|
+ * Split out handlers, the default case.
|
|
|
+ */
|
|
|
+ [SCIx_ERI_IRQ] = {
|
|
|
+ .desc = "rx err",
|
|
|
+ .handler = sci_er_interrupt,
|
|
|
+ },
|
|
|
|
|
|
- clk_enable(sci_port->iclk);
|
|
|
- sci_port->port.uartclk = clk_get_rate(sci_port->iclk);
|
|
|
- clk_enable(sci_port->fclk);
|
|
|
-}
|
|
|
+ [SCIx_RXI_IRQ] = {
|
|
|
+ .desc = "rx full",
|
|
|
+ .handler = sci_rx_interrupt,
|
|
|
+ },
|
|
|
|
|
|
-static void sci_clk_disable(struct uart_port *port)
|
|
|
-{
|
|
|
- struct sci_port *sci_port = to_sci_port(port);
|
|
|
+ [SCIx_TXI_IRQ] = {
|
|
|
+ .desc = "tx empty",
|
|
|
+ .handler = sci_tx_interrupt,
|
|
|
+ },
|
|
|
|
|
|
- clk_disable(sci_port->fclk);
|
|
|
- clk_disable(sci_port->iclk);
|
|
|
+ [SCIx_BRI_IRQ] = {
|
|
|
+ .desc = "break",
|
|
|
+ .handler = sci_br_interrupt,
|
|
|
+ },
|
|
|
|
|
|
- pm_runtime_put_sync(port->dev);
|
|
|
-}
|
|
|
+ /*
|
|
|
+ * Special muxed handler.
|
|
|
+ */
|
|
|
+ [SCIx_MUX_IRQ] = {
|
|
|
+ .desc = "mux",
|
|
|
+ .handler = sci_mpxed_interrupt,
|
|
|
+ },
|
|
|
+};
|
|
|
|
|
|
static int sci_request_irq(struct sci_port *port)
|
|
|
{
|
|
|
- int i;
|
|
|
- irqreturn_t (*handlers[4])(int irq, void *ptr) = {
|
|
|
- sci_er_interrupt, sci_rx_interrupt, sci_tx_interrupt,
|
|
|
- sci_br_interrupt,
|
|
|
- };
|
|
|
- const char *desc[] = { "SCI Receive Error", "SCI Receive Data Full",
|
|
|
- "SCI Transmit Data Empty", "SCI Break" };
|
|
|
-
|
|
|
- if (port->cfg->irqs[0] == port->cfg->irqs[1]) {
|
|
|
- if (unlikely(!port->cfg->irqs[0]))
|
|
|
- return -ENODEV;
|
|
|
-
|
|
|
- if (request_irq(port->cfg->irqs[0], sci_mpxed_interrupt,
|
|
|
- IRQF_DISABLED, "sci", port)) {
|
|
|
- dev_err(port->port.dev, "Can't allocate IRQ\n");
|
|
|
- return -ENODEV;
|
|
|
+ struct uart_port *up = &port->port;
|
|
|
+ int i, j, ret = 0;
|
|
|
+
|
|
|
+ for (i = j = 0; i < SCIx_NR_IRQS; i++, j++) {
|
|
|
+ struct sci_irq_desc *desc;
|
|
|
+ unsigned int irq;
|
|
|
+
|
|
|
+ if (SCIx_IRQ_IS_MUXED(port)) {
|
|
|
+ i = SCIx_MUX_IRQ;
|
|
|
+ irq = up->irq;
|
|
|
+ } else
|
|
|
+ irq = port->cfg->irqs[i];
|
|
|
+
|
|
|
+ desc = sci_irq_desc + i;
|
|
|
+ port->irqstr[j] = kasprintf(GFP_KERNEL, "%s:%s",
|
|
|
+ dev_name(up->dev), desc->desc);
|
|
|
+ if (!port->irqstr[j]) {
|
|
|
+ dev_err(up->dev, "Failed to allocate %s IRQ string\n",
|
|
|
+ desc->desc);
|
|
|
+ goto out_nomem;
|
|
|
}
|
|
|
- } else {
|
|
|
- for (i = 0; i < ARRAY_SIZE(handlers); i++) {
|
|
|
- if (unlikely(!port->cfg->irqs[i]))
|
|
|
- continue;
|
|
|
-
|
|
|
- if (request_irq(port->cfg->irqs[i], handlers[i],
|
|
|
- IRQF_DISABLED, desc[i], port)) {
|
|
|
- dev_err(port->port.dev, "Can't allocate IRQ\n");
|
|
|
- return -ENODEV;
|
|
|
- }
|
|
|
+
|
|
|
+ ret = request_irq(irq, desc->handler, up->irqflags,
|
|
|
+ port->irqstr[j], port);
|
|
|
+ if (unlikely(ret)) {
|
|
|
+ dev_err(up->dev, "Can't allocate %s IRQ\n", desc->desc);
|
|
|
+ goto out_noirq;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return 0;
|
|
|
+
|
|
|
+out_noirq:
|
|
|
+ while (--i >= 0)
|
|
|
+ free_irq(port->cfg->irqs[i], port);
|
|
|
+
|
|
|
+out_nomem:
|
|
|
+ while (--j >= 0)
|
|
|
+ kfree(port->irqstr[j]);
|
|
|
+
|
|
|
+ return ret;
|
|
|
}
|
|
|
|
|
|
static void sci_free_irq(struct sci_port *port)
|
|
|
{
|
|
|
int i;
|
|
|
|
|
|
- if (port->cfg->irqs[0] == port->cfg->irqs[1])
|
|
|
- free_irq(port->cfg->irqs[0], port);
|
|
|
- else {
|
|
|
- for (i = 0; i < ARRAY_SIZE(port->cfg->irqs); i++) {
|
|
|
- if (!port->cfg->irqs[i])
|
|
|
- continue;
|
|
|
+ /*
|
|
|
+ * Intentionally in reverse order so we iterate over the muxed
|
|
|
+ * IRQ first.
|
|
|
+ */
|
|
|
+ for (i = 0; i < SCIx_NR_IRQS; i++) {
|
|
|
+ free_irq(port->cfg->irqs[i], port);
|
|
|
+ kfree(port->irqstr[i]);
|
|
|
|
|
|
- free_irq(port->cfg->irqs[i], port);
|
|
|
+ if (SCIx_IRQ_IS_MUXED(port)) {
|
|
|
+ /* If there's only one IRQ, we're done. */
|
|
|
+ return;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
@@ -915,7 +1059,7 @@ static void sci_free_irq(struct sci_port *port)
|
|
|
static unsigned int sci_tx_empty(struct uart_port *port)
|
|
|
{
|
|
|
unsigned short status = sci_in(port, SCxSR);
|
|
|
- unsigned short in_tx_fifo = scif_txfill(port);
|
|
|
+ unsigned short in_tx_fifo = sci_txfill(port);
|
|
|
|
|
|
return (status & SCxSR_TEND(port)) && !in_tx_fifo ? TIOCSER_TEMT : 0;
|
|
|
}
|
|
@@ -1438,8 +1582,7 @@ static int sci_startup(struct uart_port *port)
|
|
|
|
|
|
dev_dbg(port->dev, "%s(%d)\n", __func__, port->line);
|
|
|
|
|
|
- if (s->enable)
|
|
|
- s->enable(port);
|
|
|
+ sci_port_enable(s);
|
|
|
|
|
|
ret = sci_request_irq(s);
|
|
|
if (unlikely(ret < 0))
|
|
@@ -1465,8 +1608,7 @@ static void sci_shutdown(struct uart_port *port)
|
|
|
sci_free_dma(port);
|
|
|
sci_free_irq(s);
|
|
|
|
|
|
- if (s->disable)
|
|
|
- s->disable(port);
|
|
|
+ sci_port_disable(s);
|
|
|
}
|
|
|
|
|
|
static unsigned int sci_scbrr_calc(unsigned int algo_id, unsigned int bps,
|
|
@@ -1513,8 +1655,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
|
|
|
if (likely(baud && port->uartclk))
|
|
|
t = sci_scbrr_calc(s->cfg->scbrr_algo_id, baud, port->uartclk);
|
|
|
|
|
|
- if (s->enable)
|
|
|
- s->enable(port);
|
|
|
+ sci_port_enable(s);
|
|
|
|
|
|
do {
|
|
|
status = sci_in(port, SCxSR);
|
|
@@ -1584,8 +1725,7 @@ static void sci_set_termios(struct uart_port *port, struct ktermios *termios,
|
|
|
if ((termios->c_cflag & CREAD) != 0)
|
|
|
sci_start_rx(port);
|
|
|
|
|
|
- if (s->disable)
|
|
|
- s->disable(port);
|
|
|
+ sci_port_disable(s);
|
|
|
}
|
|
|
|
|
|
static const char *sci_type(struct uart_port *port)
|
|
@@ -1726,6 +1866,7 @@ static int __devinit sci_init_single(struct platform_device *dev,
|
|
|
struct plat_sci_port *p)
|
|
|
{
|
|
|
struct uart_port *port = &sci_port->port;
|
|
|
+ int ret;
|
|
|
|
|
|
port->ops = &sci_uart_ops;
|
|
|
port->iotype = UPIO_MEM;
|
|
@@ -1746,6 +1887,12 @@ static int __devinit sci_init_single(struct platform_device *dev,
|
|
|
break;
|
|
|
}
|
|
|
|
|
|
+ if (p->regtype == SCIx_PROBE_REGTYPE) {
|
|
|
+ ret = sci_probe_regmap(p);
|
|
|
+ if (unlikely(!ret))
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
if (dev) {
|
|
|
sci_port->iclk = clk_get(&dev->dev, "sci_ick");
|
|
|
if (IS_ERR(sci_port->iclk)) {
|
|
@@ -1764,8 +1911,6 @@ static int __devinit sci_init_single(struct platform_device *dev,
|
|
|
if (IS_ERR(sci_port->fclk))
|
|
|
sci_port->fclk = NULL;
|
|
|
|
|
|
- sci_port->enable = sci_clk_enable;
|
|
|
- sci_port->disable = sci_clk_disable;
|
|
|
port->dev = &dev->dev;
|
|
|
|
|
|
pm_runtime_enable(&dev->dev);
|
|
@@ -1775,20 +1920,51 @@ static int __devinit sci_init_single(struct platform_device *dev,
|
|
|
sci_port->break_timer.function = sci_break_timer;
|
|
|
init_timer(&sci_port->break_timer);
|
|
|
|
|
|
+ /*
|
|
|
+ * Establish some sensible defaults for the error detection.
|
|
|
+ */
|
|
|
+ if (!p->error_mask)
|
|
|
+ p->error_mask = (p->type == PORT_SCI) ?
|
|
|
+ SCI_DEFAULT_ERROR_MASK : SCIF_DEFAULT_ERROR_MASK;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Establish sensible defaults for the overrun detection, unless
|
|
|
+ * the part has explicitly disabled support for it.
|
|
|
+ */
|
|
|
+ if (p->overrun_bit != SCIx_NOT_SUPPORTED) {
|
|
|
+ if (p->type == PORT_SCI)
|
|
|
+ p->overrun_bit = 5;
|
|
|
+ else if (p->scbrr_algo_id == SCBRR_ALGO_4)
|
|
|
+ p->overrun_bit = 9;
|
|
|
+ else
|
|
|
+ p->overrun_bit = 0;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Make the error mask inclusive of overrun detection, if
|
|
|
+ * supported.
|
|
|
+ */
|
|
|
+ p->error_mask |= (1 << p->overrun_bit);
|
|
|
+ }
|
|
|
+
|
|
|
sci_port->cfg = p;
|
|
|
|
|
|
port->mapbase = p->mapbase;
|
|
|
port->type = p->type;
|
|
|
port->flags = p->flags;
|
|
|
+ port->regshift = p->regshift;
|
|
|
|
|
|
/*
|
|
|
- * The UART port needs an IRQ value, so we peg this to the TX IRQ
|
|
|
+ * The UART port needs an IRQ value, so we peg this to the RX IRQ
|
|
|
* for the multi-IRQ ports, which is where we are primarily
|
|
|
* concerned with the shutdown path synchronization.
|
|
|
*
|
|
|
* For the muxed case there's nothing more to do.
|
|
|
*/
|
|
|
port->irq = p->irqs[SCIx_RXI_IRQ];
|
|
|
+ port->irqflags = IRQF_DISABLED;
|
|
|
+
|
|
|
+ port->serial_in = sci_serial_in;
|
|
|
+ port->serial_out = sci_serial_out;
|
|
|
|
|
|
if (p->dma_dev)
|
|
|
dev_dbg(port->dev, "DMA device %p, tx %d, rx %d\n",
|
|
@@ -1814,8 +1990,7 @@ static void serial_console_write(struct console *co, const char *s,
|
|
|
struct uart_port *port = &sci_port->port;
|
|
|
unsigned short bits;
|
|
|
|
|
|
- if (sci_port->enable)
|
|
|
- sci_port->enable(port);
|
|
|
+ sci_port_enable(sci_port);
|
|
|
|
|
|
uart_console_write(port, s, count, serial_console_putchar);
|
|
|
|
|
@@ -1824,8 +1999,7 @@ static void serial_console_write(struct console *co, const char *s,
|
|
|
while ((sci_in(port, SCxSR) & bits) != bits)
|
|
|
cpu_relax();
|
|
|
|
|
|
- if (sci_port->disable)
|
|
|
- sci_port->disable(port);
|
|
|
+ sci_port_disable(sci_port);
|
|
|
}
|
|
|
|
|
|
static int __devinit serial_console_setup(struct console *co, char *options)
|
|
@@ -1857,20 +2031,13 @@ static int __devinit serial_console_setup(struct console *co, char *options)
|
|
|
if (unlikely(ret != 0))
|
|
|
return ret;
|
|
|
|
|
|
- if (sci_port->enable)
|
|
|
- sci_port->enable(port);
|
|
|
+ sci_port_enable(sci_port);
|
|
|
|
|
|
if (options)
|
|
|
uart_parse_options(options, &baud, &parity, &bits, &flow);
|
|
|
|
|
|
- ret = uart_set_options(port, co, baud, parity, bits, flow);
|
|
|
-#if defined(__H8300H__) || defined(__H8300S__)
|
|
|
- /* disable rx interrupt */
|
|
|
- if (ret == 0)
|
|
|
- sci_stop_rx(port);
|
|
|
-#endif
|
|
|
/* TODO: disable clock */
|
|
|
- return ret;
|
|
|
+ return uart_set_options(port, co, baud, parity, bits, flow);
|
|
|
}
|
|
|
|
|
|
static struct console serial_console = {
|
|
@@ -2081,3 +2248,5 @@ module_exit(sci_exit);
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
MODULE_ALIAS("platform:sh-sci");
|
|
|
+MODULE_AUTHOR("Paul Mundt");
|
|
|
+MODULE_DESCRIPTION("SuperH SCI(F) serial driver");
|