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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/plat-omap/include/plat/omap-serial.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/plat-omap/include/plat/omap-serial.h')
-rw-r--r--arch/arm/plat-omap/include/plat/omap-serial.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
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+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -0,0 +1,141 @@
+/*
+ * Driver for OMAP-UART controller.
+ * Based on drivers/serial/8250.c
+ *
+ * Copyright (C) 2010 Texas Instruments.
+ *
+ * Authors:
+ * Govindraj R <govindraj.raja@ti.com>
+ * Thara Gopinath <thara@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __OMAP_SERIAL_H__
+#define __OMAP_SERIAL_H__
+
+#include <linux/serial_core.h>
+#include <linux/platform_device.h>
+#include <linux/pm_qos.h>
+
+#include <plat/mux.h>
+
+#define DRIVER_NAME "omap_uart"
+
+/*
+ * Use tty device name as ttyO, [O -> OMAP]
+ * in bootargs we specify as console=ttyO0 if uart1
+ * is used as console uart.
+ */
+#define OMAP_SERIAL_NAME "ttyO"
+
+#define OMAP_MODE13X_SPEED 230400
+
+#define OMAP_UART_SCR_TX_EMPTY 0x08
+
+/* WER = 0x7F
+ * Enable module level wakeup in WER reg
+ */
+#define OMAP_UART_WER_MOD_WKUP 0X7F
+
+/* Enable XON/XOFF flow control on output */
+#define OMAP_UART_SW_TX 0x04
+
+/* Enable XON/XOFF flow control on input */
+#define OMAP_UART_SW_RX 0x04
+
+#define OMAP_UART_SYSC_RESET 0X07
+#define OMAP_UART_TCR_TRIG 0X0F
+#define OMAP_UART_SW_CLR 0XF0
+#define OMAP_UART_FIFO_CLR 0X06
+
+#define OMAP_UART_DMA_CH_FREE -1
+
+#define OMAP_MAX_HSUART_PORTS 4
+
+#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
+
+#define UART_ERRATA_i202_MDR1_ACCESS BIT(0)
+#define UART_ERRATA_i291_DMA_FORCEIDLE BIT(1)
+
+struct omap_uart_port_info {
+ bool dma_enabled; /* To specify DMA Mode */
+ unsigned int uartclk; /* UART clock rate */
+ upf_t flags; /* UPF_* flags */
+ u32 errata;
+ unsigned int dma_rx_buf_size;
+ unsigned int dma_rx_timeout;
+ unsigned int autosuspend_timeout;
+ unsigned int dma_rx_poll_rate;
+
+ int (*get_context_loss_count)(struct device *);
+ void (*set_forceidle)(struct platform_device *);
+ void (*set_noidle)(struct platform_device *);
+ void (*enable_wakeup)(struct platform_device *, bool);
+};
+
+struct uart_omap_dma {
+ u8 uart_dma_tx;
+ u8 uart_dma_rx;
+ int rx_dma_channel;
+ int tx_dma_channel;
+ dma_addr_t rx_buf_dma_phys;
+ dma_addr_t tx_buf_dma_phys;
+ unsigned int uart_base;
+ /*
+ * Buffer for rx dma.It is not required for tx because the buffer
+ * comes from port structure.
+ */
+ unsigned char *rx_buf;
+ unsigned int prev_rx_dma_pos;
+ int tx_buf_size;
+ int tx_dma_used;
+ int rx_dma_used;
+ spinlock_t tx_lock;
+ spinlock_t rx_lock;
+ /* timer to poll activity on rx dma */
+ struct timer_list rx_timer;
+ unsigned int rx_buf_size;
+ unsigned int rx_poll_rate;
+ unsigned int rx_timeout;
+};
+
+struct uart_omap_port {
+ struct uart_port port;
+ struct uart_omap_dma uart_dma;
+ struct platform_device *pdev;
+
+ unsigned char ier;
+ unsigned char lcr;
+ unsigned char mcr;
+ unsigned char fcr;
+ unsigned char efr;
+ unsigned char dll;
+ unsigned char dlh;
+ unsigned char mdr1;
+ unsigned char scr;
+
+ int use_dma;
+ /*
+ * Some bits in registers are cleared on a read, so they must
+ * be saved whenever the register is read but the bits will not
+ * be immediately processed.
+ */
+ unsigned int lsr_break_flag;
+ unsigned char msr_saved_flags;
+ char name[20];
+ unsigned long port_activity;
+ u32 context_loss_cnt;
+ u32 errata;
+ u8 wakeups_enabled;
+
+ struct pm_qos_request pm_qos_request;
+ u32 latency;
+ u32 calc_latency;
+ struct work_struct qos_work;
+};
+
+#endif /* __OMAP_SERIAL_H__ */