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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:48:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-08 07:48:23 -0800
commitee1262dbc65ce0b6234a915d8432171e8d77f518 (patch)
tree3a4003800d170de691b2e6a9c93c0ca6795678bf /drivers/serial/apbuart.h
parenta421018e8c10e5593a1fee076af72a66c3fe8ca3 (diff)
parent7f5620a5fcd658f219e85831d3691908f1eccbde (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: sparc: Set UTS_MACHINE correctly. sparc,leon: init_leon srmmu cleanup sparc32: Remove early interrupt enable. sparc, leon: Added Aeroflex Gaisler entry in manufacturer_info structure sparc64: Faster early-boot framebuffer console. Revert "sparc: Make atomic locks raw" sparc: remove unused nfsd #includes sparc: Fixup last users of irq_chip->typename Added sparc_leon3_snooping_enabled() and converted extern inline to static inline No auxio on LEON apbuart: Use of_find_node_by_path to find root node. sparc: Replace old style lock initializer sparc: Make atomic locks raw apbuart: Fix build and missing driver unregister. apbuart: Kill dependency on deprecated Sparc-only PROM interfaces. apbuart: Fix build warning. sparc: Support for GRLIB APBUART serial port watchdog: Remove BKL from rio watchdog driver sparc: Remove BKL from apc sparc,leon: Sparc-Leon SMP support
Diffstat (limited to 'drivers/serial/apbuart.h')
-rw-r--r--drivers/serial/apbuart.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/serial/apbuart.h b/drivers/serial/apbuart.h
new file mode 100644
index 00000000000..5faf87c8d2b
--- /dev/null
+++ b/drivers/serial/apbuart.h
@@ -0,0 +1,64 @@
+#ifndef __GRLIB_APBUART_H__
+#define __GRLIB_APBUART_H__
+
+#include <asm/io.h>
+
+#define UART_NR 8
+static int grlib_apbuart_port_nr;
+
+struct grlib_apbuart_regs_map {
+ u32 data;
+ u32 status;
+ u32 ctrl;
+ u32 scaler;
+};
+
+struct amba_prom_registers {
+ unsigned int phys_addr;
+ unsigned int reg_size;
+};
+
+/*
+ * The following defines the bits in the APBUART Status Registers.
+ */
+#define UART_STATUS_DR 0x00000001 /* Data Ready */
+#define UART_STATUS_TSE 0x00000002 /* TX Send Register Empty */
+#define UART_STATUS_THE 0x00000004 /* TX Hold Register Empty */
+#define UART_STATUS_BR 0x00000008 /* Break Error */
+#define UART_STATUS_OE 0x00000010 /* RX Overrun Error */
+#define UART_STATUS_PE 0x00000020 /* RX Parity Error */
+#define UART_STATUS_FE 0x00000040 /* RX Framing Error */
+#define UART_STATUS_ERR 0x00000078 /* Error Mask */
+
+/*
+ * The following defines the bits in the APBUART Ctrl Registers.
+ */
+#define UART_CTRL_RE 0x00000001 /* Receiver enable */
+#define UART_CTRL_TE 0x00000002 /* Transmitter enable */
+#define UART_CTRL_RI 0x00000004 /* Receiver interrupt enable */
+#define UART_CTRL_TI 0x00000008 /* Transmitter irq */
+#define UART_CTRL_PS 0x00000010 /* Parity select */
+#define UART_CTRL_PE 0x00000020 /* Parity enable */
+#define UART_CTRL_FL 0x00000040 /* Flow control enable */
+#define UART_CTRL_LB 0x00000080 /* Loopback enable */
+
+#define APBBASE(port) ((struct grlib_apbuart_regs_map *)((port)->membase))
+
+#define APBBASE_DATA_P(port) (&(APBBASE(port)->data))
+#define APBBASE_STATUS_P(port) (&(APBBASE(port)->status))
+#define APBBASE_CTRL_P(port) (&(APBBASE(port)->ctrl))
+#define APBBASE_SCALAR_P(port) (&(APBBASE(port)->scaler))
+
+#define UART_GET_CHAR(port) (__raw_readl(APBBASE_DATA_P(port)))
+#define UART_PUT_CHAR(port, v) (__raw_writel(v, APBBASE_DATA_P(port)))
+#define UART_GET_STATUS(port) (__raw_readl(APBBASE_STATUS_P(port)))
+#define UART_PUT_STATUS(port, v)(__raw_writel(v, APBBASE_STATUS_P(port)))
+#define UART_GET_CTRL(port) (__raw_readl(APBBASE_CTRL_P(port)))
+#define UART_PUT_CTRL(port, v) (__raw_writel(v, APBBASE_CTRL_P(port)))
+#define UART_GET_SCAL(port) (__raw_readl(APBBASE_SCALAR_P(port)))
+#define UART_PUT_SCAL(port, v) (__raw_writel(v, APBBASE_SCALAR_P(port)))
+
+#define UART_RX_DATA(s) (((s) & UART_STATUS_DR) != 0)
+#define UART_TX_READY(s) (((s) & UART_STATUS_THE) != 0)
+
+#endif /* __GRLIB_APBUART_H__ */