serial: pic32_uart: Add PIC32 UART driver

		controller serial port as your console (you want this!),

		say Y.  Otherwise, say N.

config SERIAL_PIC32

	tristate "Microchip PIC32 serial support"

	depends on MACH_PIC32

	select SERIAL_CORE

	help

	  If you have a PIC32, this driver supports the serial ports.

	  Say Y or M to use PIC32 serial ports, otherwise say N. Note that

	  to use a serial port as a console, this must be included in kernel and

	  not as a module.

config SERIAL_PIC32_CONSOLE

	bool "PIC32 serial console support"

	depends on SERIAL_PIC32

	select SERIAL_CORE_CONSOLE

	help

	  If you have a PIC32, this driver supports the putting a console on one

	  of the serial ports.

	  Say Y to use the PIC32 console, otherwise say N.

config SERIAL_MPC52xx

	tristate "Freescale MPC52xx/MPC512x family PSC serial support"

	depends on PPC_MPC52xx || PPC_MPC512x

obj-$(CONFIG_SERIAL_SPRD) += sprd_serial.o

obj-$(CONFIG_SERIAL_STM32)	+= stm32-usart.o

obj-$(CONFIG_SERIAL_MVEBU_UART)	+= mvebu-uart.o

obj-$(CONFIG_SERIAL_PIC32)	+= pic32_uart.o

# GPIOLIB helpers for modem control lines

obj-$(CONFIG_SERIAL_MCTRL_GPIO)	+= serial_mctrl_gpio.o

/*

 * PIC32 Integrated Serial Driver.

 *

 * Copyright (C) 2015 Microchip Technology, Inc.

 *

 * Authors:

 *   Sorin-Andrei Pistirica <andrei.pistirica@microchip.com>

 *

 * Licensed under GPLv2 or later.

 */

#ifndef __DT_PIC32_UART_H__

#define __DT_PIC32_UART_H__

#define PIC32_UART_DFLT_BRATE		(9600)

#define PIC32_UART_TX_FIFO_DEPTH	(8)

#define PIC32_UART_RX_FIFO_DEPTH	(8)

#define PIC32_UART_MODE		0x00

#define PIC32_UART_STA		0x10

#define PIC32_UART_TX		0x20

#define PIC32_UART_RX		0x30

#define PIC32_UART_BRG		0x40

struct pic32_console_opt {

	int baud;

	int parity;

	int bits;

	int flow;

};

/* struct pic32_sport - pic32 serial port descriptor

 * @port: uart port descriptor

 * @idx: port index

 * @irq_fault: virtual fault interrupt number

 * @irqflags_fault: flags related to fault irq

 * @irq_fault_name: irq fault name

 * @irq_rx: virtual rx interrupt number

 * @irqflags_rx: flags related to rx irq

 * @irq_rx_name: irq rx name

 * @irq_tx: virtual tx interrupt number

 * @irqflags_tx: : flags related to tx irq

 * @irq_tx_name: irq tx name

 * @cts_gpio: clear to send gpio

 * @dev: device descriptor

 **/

struct pic32_sport {

	struct uart_port port;

	struct pic32_console_opt opt;

	int idx;

	int irq_fault;

	int irqflags_fault;

	const char *irq_fault_name;

	int irq_rx;

	int irqflags_rx;

	const char *irq_rx_name;

	int irq_tx;

	int irqflags_tx;

	const char *irq_tx_name;

	u8 enable_tx_irq;

	bool hw_flow_ctrl;

	int cts_gpio;

	int ref_clk;

	struct clk *clk;

	struct device *dev;

};

#define to_pic32_sport(c) container_of(c, struct pic32_sport, port)

#define pic32_get_port(sport) (&sport->port)

#define pic32_get_opt(sport) (&sport->opt)

#define tx_irq_enabled(sport) (sport->enable_tx_irq)

static inline void pic32_uart_writel(struct pic32_sport *sport,

					u32 reg, u32 val)

{

	struct uart_port *port = pic32_get_port(sport);

	__raw_writel(val, port->membase + reg);

}

static inline u32 pic32_uart_readl(struct pic32_sport *sport, u32 reg)

{

	struct uart_port *port = pic32_get_port(sport);

	return	__raw_readl(port->membase + reg);

}

/* pic32 uart mode register bits */

#define PIC32_UART_MODE_ON        BIT(15)

#define PIC32_UART_MODE_FRZ       BIT(14)

#define PIC32_UART_MODE_SIDL      BIT(13)

#define PIC32_UART_MODE_IREN      BIT(12)

#define PIC32_UART_MODE_RTSMD     BIT(11)

#define PIC32_UART_MODE_RESV1     BIT(10)

#define PIC32_UART_MODE_UEN1      BIT(9)

#define PIC32_UART_MODE_UEN0      BIT(8)

#define PIC32_UART_MODE_WAKE      BIT(7)

#define PIC32_UART_MODE_LPBK      BIT(6)

#define PIC32_UART_MODE_ABAUD     BIT(5)

#define PIC32_UART_MODE_RXINV     BIT(4)

#define PIC32_UART_MODE_BRGH      BIT(3)

#define PIC32_UART_MODE_PDSEL1    BIT(2)

#define PIC32_UART_MODE_PDSEL0    BIT(1)

#define PIC32_UART_MODE_STSEL     BIT(0)

/* pic32 uart status register bits */

#define PIC32_UART_STA_UTXISEL1   BIT(15)

#define PIC32_UART_STA_UTXISEL0   BIT(14)

#define PIC32_UART_STA_UTXINV     BIT(13)

#define PIC32_UART_STA_URXEN      BIT(12)

#define PIC32_UART_STA_UTXBRK     BIT(11)

#define PIC32_UART_STA_UTXEN      BIT(10)

#define PIC32_UART_STA_UTXBF      BIT(9)

#define PIC32_UART_STA_TRMT       BIT(8)

#define PIC32_UART_STA_URXISEL1   BIT(7)

#define PIC32_UART_STA_URXISEL0   BIT(6)

#define PIC32_UART_STA_ADDEN      BIT(5)

#define PIC32_UART_STA_RIDLE      BIT(4)

#define PIC32_UART_STA_PERR       BIT(3)

#define PIC32_UART_STA_FERR       BIT(2)

#define PIC32_UART_STA_OERR       BIT(1)

#define PIC32_UART_STA_URXDA      BIT(0)

#endif /* __DT_PIC32_UART_H__ */

/* MVEBU UART */

#define PORT_MVEBU	114

/* Microchip PIC32 UART */

#define PORT_PIC32	114

#endif /* _UAPILINUX_SERIAL_CORE_H */