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authorMike Frysinger <vapier@gentoo.org>2009-09-28 07:16:01 +0400
committerMike Frysinger <vapier@gentoo.org>2011-01-10 15:18:02 +0300
commitb1524e29e318e79b2d04bcbd651a7af8dff32bb3 (patch)
tree7e138995fa0f8727b61fdada567cbda3f95e1670 /arch/blackfin/mach-bf538
parent709465d6ea0466454ef547e7d1065db2b23033a9 (diff)
downloadlinux-b1524e29e318e79b2d04bcbd651a7af8dff32bb3.tar.xz
Blackfin: bfin_serial.h: unify heavily duplicated serial code
Each Blackfin port has been duplicating UART structures and defines when there really is no need for it. So start a new bfin_serial.h header to unify all these pieces and give ourselves a fresh start. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-bf538')
-rw-r--r--arch/blackfin/mach-bf538/include/mach/bfin_serial.h14
-rw-r--r--arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h73
-rw-r--r--arch/blackfin/mach-bf538/include/mach/blackfin.h15
-rw-r--r--arch/blackfin/mach-bf538/include/mach/defBF539.h77
4 files changed, 16 insertions, 163 deletions
diff --git a/arch/blackfin/mach-bf538/include/mach/bfin_serial.h b/arch/blackfin/mach-bf538/include/mach/bfin_serial.h
new file mode 100644
index 000000000000..c66e2760aad3
--- /dev/null
+++ b/arch/blackfin/mach-bf538/include/mach/bfin_serial.h
@@ -0,0 +1,14 @@
+/*
+ * mach/bfin_serial.h - Blackfin UART/Serial definitions
+ *
+ * Copyright 2006-2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __BFIN_MACH_SERIAL_H__
+#define __BFIN_MACH_SERIAL_H__
+
+#define BFIN_UART_NR_PORTS 3
+
+#endif
diff --git a/arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h b/arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h
index 5c148142f041..beb502e9cb33 100644
--- a/arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h
+++ b/arch/blackfin/mach-bf538/include/mach/bfin_serial_5xx.h
@@ -4,36 +4,9 @@
* Licensed under the GPL-2 or later.
*/
-#include <linux/serial.h>
#include <asm/dma.h>
#include <asm/portmux.h>
-#define UART_GET_CHAR(uart) bfin_read16(((uart)->port.membase + OFFSET_RBR))
-#define UART_GET_DLL(uart) bfin_read16(((uart)->port.membase + OFFSET_DLL))
-#define UART_GET_IER(uart) bfin_read16(((uart)->port.membase + OFFSET_IER))
-#define UART_GET_DLH(uart) bfin_read16(((uart)->port.membase + OFFSET_DLH))
-#define UART_GET_IIR(uart) bfin_read16(((uart)->port.membase + OFFSET_IIR))
-#define UART_GET_LCR(uart) bfin_read16(((uart)->port.membase + OFFSET_LCR))
-#define UART_GET_GCTL(uart) bfin_read16(((uart)->port.membase + OFFSET_GCTL))
-
-#define UART_PUT_CHAR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_THR), v)
-#define UART_PUT_DLL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLL), v)
-#define UART_PUT_IER(uart, v) bfin_write16(((uart)->port.membase + OFFSET_IER), v)
-#define UART_SET_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) | (v))
-#define UART_CLEAR_IER(uart, v) UART_PUT_IER(uart, UART_GET_IER(uart) & ~(v))
-#define UART_PUT_DLH(uart, v) bfin_write16(((uart)->port.membase + OFFSET_DLH), v)
-#define UART_PUT_LCR(uart, v) bfin_write16(((uart)->port.membase + OFFSET_LCR), v)
-#define UART_PUT_GCTL(uart, v) bfin_write16(((uart)->port.membase + OFFSET_GCTL), v)
-
-#define UART_SET_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) | DLAB); SSYNC(); } while (0)
-#define UART_CLEAR_DLAB(uart) do { UART_PUT_LCR(uart, UART_GET_LCR(uart) & ~DLAB); SSYNC(); } while (0)
-
-#define UART_GET_CTS(x) gpio_get_value(x->cts_pin)
-#define UART_DISABLE_RTS(x) gpio_set_value(x->rts_pin, 1)
-#define UART_ENABLE_RTS(x) gpio_set_value(x->rts_pin, 0)
-#define UART_ENABLE_INTS(x, v) UART_PUT_IER(x, v)
-#define UART_DISABLE_INTS(x) UART_PUT_IER(x, 0)
-
#if defined(CONFIG_BFIN_UART0_CTSRTS) || defined(CONFIG_BFIN_UART1_CTSRTS)
# define CONFIG_SERIAL_BFIN_CTSRTS
@@ -54,50 +27,6 @@
# endif
#endif
-#define BFIN_UART_TX_FIFO_SIZE 2
-
-/*
- * The pin configuration is different from schematic
- */
-struct bfin_serial_port {
- struct uart_port port;
- unsigned int old_status;
- int status_irq;
- unsigned int lsr;
-#ifdef CONFIG_SERIAL_BFIN_DMA
- int tx_done;
- int tx_count;
- struct circ_buf rx_dma_buf;
- struct timer_list rx_dma_timer;
- int rx_dma_nrows;
- unsigned int tx_dma_channel;
- unsigned int rx_dma_channel;
- struct work_struct tx_dma_workqueue;
-#endif
-#ifdef CONFIG_SERIAL_BFIN_CTSRTS
- struct timer_list cts_timer;
- int cts_pin;
- int rts_pin;
-#endif
-};
-
-/* The hardware clears the LSR bits upon read, so we need to cache
- * some of the more fun bits in software so they don't get lost
- * when checking the LSR in other code paths (TX).
- */
-static inline unsigned int UART_GET_LSR(struct bfin_serial_port *uart)
-{
- unsigned int lsr = bfin_read16(uart->port.membase + OFFSET_LSR);
- uart->lsr |= (lsr & (BI|FE|PE|OE));
- return lsr | uart->lsr;
-}
-
-static inline void UART_CLEAR_LSR(struct bfin_serial_port *uart)
-{
- uart->lsr = 0;
- bfin_write16(uart->port.membase + OFFSET_LSR, -1);
-}
-
struct bfin_serial_res {
unsigned long uart_base_addr;
int uart_irq;
@@ -160,3 +89,5 @@ struct bfin_serial_res bfin_serial_resource[] = {
};
#define DRIVER_NAME "bfin-uart"
+
+#include <asm/bfin_serial.h>
diff --git a/arch/blackfin/mach-bf538/include/mach/blackfin.h b/arch/blackfin/mach-bf538/include/mach/blackfin.h
index 08b5eabb1ed5..b82cb0248ab6 100644
--- a/arch/blackfin/mach-bf538/include/mach/blackfin.h
+++ b/arch/blackfin/mach-bf538/include/mach/blackfin.h
@@ -22,19 +22,4 @@
#endif
#endif
-#define BFIN_UART_NR_PORTS 3
-
-#define OFFSET_THR 0x00 /* Transmit Holding register */
-#define OFFSET_RBR 0x00 /* Receive Buffer register */
-#define OFFSET_DLL 0x00 /* Divisor Latch (Low-Byte) */
-#define OFFSET_IER 0x04 /* Interrupt Enable Register */
-#define OFFSET_DLH 0x04 /* Divisor Latch (High-Byte) */
-#define OFFSET_IIR 0x08 /* Interrupt Identification Register */
-#define OFFSET_LCR 0x0C /* Line Control Register */
-#define OFFSET_MCR 0x10 /* Modem Control Register */
-#define OFFSET_LSR 0x14 /* Line Status Register */
-#define OFFSET_MSR 0x18 /* Modem Status Register */
-#define OFFSET_SCR 0x1C /* SCR Scratch Register */
-#define OFFSET_GCTL 0x24 /* Global Control Register */
-
#endif
diff --git a/arch/blackfin/mach-bf538/include/mach/defBF539.h b/arch/blackfin/mach-bf538/include/mach/defBF539.h
index 7a8ac5f44204..0ef05c9845b8 100644
--- a/arch/blackfin/mach-bf538/include/mach/defBF539.h
+++ b/arch/blackfin/mach-bf538/include/mach/defBF539.h
@@ -1534,83 +1534,6 @@
#define IWR_DISABLE(x) (0xFFFFFFFF ^ (1 << ((x)&0x1F))) /* Wakeup Disable Peripheral #x */
#endif /* _MISRA_RULES */
-
-/* ***************************** UART CONTROLLER MASKS ********************** */
-/* UARTx_LCR Register */
-#ifdef _MISRA_RULES
-#define WLS(x) (((x)-5u) & 0x03u) /* Word Length Select */
-#else
-#define WLS(x) (((x)-5) & 0x03) /* Word Length Select */
-#endif /* _MISRA_RULES */
-#define STB 0x04 /* Stop Bits */
-#define PEN 0x08 /* Parity Enable */
-#define EPS 0x10 /* Even Parity Select */
-#define STP 0x20 /* Stick Parity */
-#define SB 0x40 /* Set Break */
-#define DLAB 0x80 /* Divisor Latch Access */
-
-#define DLAB_P 0x07
-#define SB_P 0x06
-#define STP_P 0x05
-#define EPS_P 0x04
-#define PEN_P 0x03
-#define STB_P 0x02
-#define WLS_P1 0x01
-#define WLS_P0 0x00
-
-/* UARTx_MCR Register */
-#define LOOP_ENA 0x10 /* Loopback Mode Enable */
-#define LOOP_ENA_P 0x04
-/* Deprecated UARTx_MCR Mask */
-
-/* UARTx_LSR Register */
-#define DR 0x01 /* Data Ready */
-#define OE 0x02 /* Overrun Error */
-#define PE 0x04 /* Parity Error */
-#define FE 0x08 /* Framing Error */
-#define BI 0x10 /* Break Interrupt */
-#define THRE 0x20 /* THR Empty */
-#define TEMT 0x40 /* TSR and UART_THR Empty */
-
-#define TEMP_P 0x06
-#define THRE_P 0x05
-#define BI_P 0x04
-#define FE_P 0x03
-#define PE_P 0x02
-#define OE_P 0x01
-#define DR_P 0x00
-
-/* UARTx_IER Register */
-#define ERBFI 0x01 /* Enable Receive Buffer Full Interrupt */
-#define ETBEI 0x02 /* Enable Transmit Buffer Empty Interrupt */
-#define ELSI 0x04 /* Enable RX Status Interrupt */
-
-#define ELSI_P 0x02
-#define ETBEI_P 0x01
-#define ERBFI_P 0x00
-
-/* UARTx_IIR Register */
-#define NINT 0x01
-#define STATUS_P1 0x02
-#define STATUS_P0 0x01
-#define NINT_P 0x00
-
-/* UARTx_GCTL Register */
-#define UCEN 0x01 /* Enable UARTx Clocks */
-#define IREN 0x02 /* Enable IrDA Mode */
-#define TPOLC 0x04 /* IrDA TX Polarity Change */
-#define RPOLC 0x08 /* IrDA RX Polarity Change */
-#define FPE 0x10 /* Force Parity Error On Transmit */
-#define FFE 0x20 /* Force Framing Error On Transmit */
-
-#define FFE_P 0x05
-#define FPE_P 0x04
-#define RPOLC_P 0x03
-#define TPOLC_P 0x02
-#define IREN_P 0x01
-#define UCEN_P 0x00
-
-
/* ********* PARALLEL PERIPHERAL INTERFACE (PPI) MASKS **************** */
/* PPI_CONTROL Masks */
#define PORT_EN 0x0001 /* PPI Port Enable */