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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /arch/m68k/include/asm/mcfuart.h
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/m68k/include/asm/mcfuart.h')
-rw-r--r--arch/m68k/include/asm/mcfuart.h189
1 files changed, 189 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/mcfuart.h b/arch/m68k/include/asm/mcfuart.h
new file mode 100644
index 0000000000..a1f35352f3
--- /dev/null
+++ b/arch/m68k/include/asm/mcfuart.h
@@ -0,0 +1,189 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/****************************************************************************/
+
+/*
+ * mcfuart.h -- ColdFire internal UART support defines.
+ *
+ * (C) Copyright 1999-2003, Greg Ungerer (gerg@snapgear.com)
+ * (C) Copyright 2000, Lineo Inc. (www.lineo.com)
+ */
+
+/****************************************************************************/
+#ifndef mcfuart_h
+#define mcfuart_h
+/****************************************************************************/
+
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+
+struct mcf_platform_uart {
+ unsigned long mapbase; /* Physical address base */
+ void __iomem *membase; /* Virtual address if mapped */
+ unsigned int irq; /* Interrupt vector */
+ unsigned int uartclk; /* UART clock rate */
+};
+
+/*
+ * Define the ColdFire UART register set addresses.
+ */
+#define MCFUART_UMR 0x00 /* Mode register (r/w) */
+#define MCFUART_USR 0x04 /* Status register (r) */
+#define MCFUART_UCSR 0x04 /* Clock Select (w) */
+#define MCFUART_UCR 0x08 /* Command register (w) */
+#define MCFUART_URB 0x0c /* Receiver Buffer (r) */
+#define MCFUART_UTB 0x0c /* Transmit Buffer (w) */
+#define MCFUART_UIPCR 0x10 /* Input Port Change (r) */
+#define MCFUART_UACR 0x10 /* Auxiliary Control (w) */
+#define MCFUART_UISR 0x14 /* Interrupt Status (r) */
+#define MCFUART_UIMR 0x14 /* Interrupt Mask (w) */
+#define MCFUART_UBG1 0x18 /* Baud Rate MSB (r/w) */
+#define MCFUART_UBG2 0x1c /* Baud Rate LSB (r/w) */
+#ifdef CONFIG_M5272
+#define MCFUART_UTF 0x28 /* Transmitter FIFO (r/w) */
+#define MCFUART_URF 0x2c /* Receiver FIFO (r/w) */
+#define MCFUART_UFPD 0x30 /* Frac Prec. Divider (r/w) */
+#endif
+#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
+ defined(CONFIG_M5249) || defined(CONFIG_M525x) || \
+ defined(CONFIG_M5307) || defined(CONFIG_M5407)
+#define MCFUART_UIVR 0x30 /* Interrupt Vector (r/w) */
+#endif
+#define MCFUART_UIPR 0x34 /* Input Port (r) */
+#define MCFUART_UOP1 0x38 /* Output Port Bit Set (w) */
+#define MCFUART_UOP0 0x3c /* Output Port Bit Reset (w) */
+
+
+/*
+ * Define bit flags in Mode Register 1 (MR1).
+ */
+#define MCFUART_MR1_RXRTS 0x80 /* Auto RTS flow control */
+#define MCFUART_MR1_RXIRQFULL 0x40 /* RX IRQ type FULL */
+#define MCFUART_MR1_RXIRQRDY 0x00 /* RX IRQ type RDY */
+#define MCFUART_MR1_RXERRBLOCK 0x20 /* RX block error mode */
+#define MCFUART_MR1_RXERRCHAR 0x00 /* RX char error mode */
+
+#define MCFUART_MR1_PARITYNONE 0x10 /* No parity */
+#define MCFUART_MR1_PARITYEVEN 0x00 /* Even parity */
+#define MCFUART_MR1_PARITYODD 0x04 /* Odd parity */
+#define MCFUART_MR1_PARITYSPACE 0x08 /* Space parity */
+#define MCFUART_MR1_PARITYMARK 0x0c /* Mark parity */
+
+#define MCFUART_MR1_CS5 0x00 /* 5 bits per char */
+#define MCFUART_MR1_CS6 0x01 /* 6 bits per char */
+#define MCFUART_MR1_CS7 0x02 /* 7 bits per char */
+#define MCFUART_MR1_CS8 0x03 /* 8 bits per char */
+
+/*
+ * Define bit flags in Mode Register 2 (MR2).
+ */
+#define MCFUART_MR2_LOOPBACK 0x80 /* Loopback mode */
+#define MCFUART_MR2_REMOTELOOP 0xc0 /* Remote loopback mode */
+#define MCFUART_MR2_AUTOECHO 0x40 /* Automatic echo */
+#define MCFUART_MR2_TXRTS 0x20 /* Assert RTS on TX */
+#define MCFUART_MR2_TXCTS 0x10 /* Auto CTS flow control */
+
+#define MCFUART_MR2_STOP1 0x07 /* 1 stop bit */
+#define MCFUART_MR2_STOP15 0x08 /* 1.5 stop bits */
+#define MCFUART_MR2_STOP2 0x0f /* 2 stop bits */
+
+/*
+ * Define bit flags in Status Register (USR).
+ */
+#define MCFUART_USR_RXBREAK 0x80 /* Received BREAK */
+#define MCFUART_USR_RXFRAMING 0x40 /* Received framing error */
+#define MCFUART_USR_RXPARITY 0x20 /* Received parity error */
+#define MCFUART_USR_RXOVERRUN 0x10 /* Received overrun error */
+#define MCFUART_USR_TXEMPTY 0x08 /* Transmitter empty */
+#define MCFUART_USR_TXREADY 0x04 /* Transmitter ready */
+#define MCFUART_USR_RXFULL 0x02 /* Receiver full */
+#define MCFUART_USR_RXREADY 0x01 /* Receiver ready */
+
+#define MCFUART_USR_RXERR (MCFUART_USR_RXBREAK | MCFUART_USR_RXFRAMING | \
+ MCFUART_USR_RXPARITY | MCFUART_USR_RXOVERRUN)
+
+/*
+ * Define bit flags in Clock Select Register (UCSR).
+ */
+#define MCFUART_UCSR_RXCLKTIMER 0xd0 /* RX clock is timer */
+#define MCFUART_UCSR_RXCLKEXT16 0xe0 /* RX clock is external x16 */
+#define MCFUART_UCSR_RXCLKEXT1 0xf0 /* RX clock is external x1 */
+
+#define MCFUART_UCSR_TXCLKTIMER 0x0d /* TX clock is timer */
+#define MCFUART_UCSR_TXCLKEXT16 0x0e /* TX clock is external x16 */
+#define MCFUART_UCSR_TXCLKEXT1 0x0f /* TX clock is external x1 */
+
+/*
+ * Define bit flags in Command Register (UCR).
+ */
+#define MCFUART_UCR_CMDNULL 0x00 /* No command */
+#define MCFUART_UCR_CMDRESETMRPTR 0x10 /* Reset MR pointer */
+#define MCFUART_UCR_CMDRESETRX 0x20 /* Reset receiver */
+#define MCFUART_UCR_CMDRESETTX 0x30 /* Reset transmitter */
+#define MCFUART_UCR_CMDRESETERR 0x40 /* Reset error status */
+#define MCFUART_UCR_CMDRESETBREAK 0x50 /* Reset BREAK change */
+#define MCFUART_UCR_CMDBREAKSTART 0x60 /* Start BREAK */
+#define MCFUART_UCR_CMDBREAKSTOP 0x70 /* Stop BREAK */
+
+#define MCFUART_UCR_TXNULL 0x00 /* No TX command */
+#define MCFUART_UCR_TXENABLE 0x04 /* Enable TX */
+#define MCFUART_UCR_TXDISABLE 0x08 /* Disable TX */
+#define MCFUART_UCR_RXNULL 0x00 /* No RX command */
+#define MCFUART_UCR_RXENABLE 0x01 /* Enable RX */
+#define MCFUART_UCR_RXDISABLE 0x02 /* Disable RX */
+
+/*
+ * Define bit flags in Input Port Change Register (UIPCR).
+ */
+#define MCFUART_UIPCR_CTSCOS 0x10 /* CTS change of state */
+#define MCFUART_UIPCR_CTS 0x01 /* CTS value */
+
+/*
+ * Define bit flags in Input Port Register (UIP).
+ */
+#define MCFUART_UIPR_CTS 0x01 /* CTS value */
+
+/*
+ * Define bit flags in Output Port Registers (UOP).
+ * Clear bit by writing to UOP0, set by writing to UOP1.
+ */
+#define MCFUART_UOP_RTS 0x01 /* RTS set or clear */
+
+/*
+ * Define bit flags in the Auxiliary Control Register (UACR).
+ */
+#define MCFUART_UACR_IEC 0x01 /* Input enable control */
+
+/*
+ * Define bit flags in Interrupt Status Register (UISR).
+ * These same bits are used for the Interrupt Mask Register (UIMR).
+ */
+#define MCFUART_UIR_COS 0x80 /* Change of state (CTS) */
+#define MCFUART_UIR_DELTABREAK 0x04 /* Break start or stop */
+#define MCFUART_UIR_RXREADY 0x02 /* Receiver ready */
+#define MCFUART_UIR_TXREADY 0x01 /* Transmitter ready */
+
+#ifdef CONFIG_M5272
+/*
+ * Define bit flags in the Transmitter FIFO Register (UTF).
+ */
+#define MCFUART_UTF_TXB 0x1f /* Transmitter data level */
+#define MCFUART_UTF_FULL 0x20 /* Transmitter fifo full */
+#define MCFUART_UTF_TXS 0xc0 /* Transmitter status */
+
+/*
+ * Define bit flags in the Receiver FIFO Register (URF).
+ */
+#define MCFUART_URF_RXB 0x1f /* Receiver data level */
+#define MCFUART_URF_FULL 0x20 /* Receiver fifo full */
+#define MCFUART_URF_RXS 0xc0 /* Receiver status */
+#endif
+
+#if defined(CONFIG_M54xx)
+#define MCFUART_TXFIFOSIZE 512
+#elif defined(CONFIG_M5272)
+#define MCFUART_TXFIFOSIZE 25
+#else
+#define MCFUART_TXFIFOSIZE 1
+#endif
+/****************************************************************************/
+#endif /* mcfuart_h */