ARM: OMAP2+: Remove legacy serial.c

	-I$(srctree)/arch/arm/plat-omap/include

# Common support

obj-y := id.o io.o control.o mux.o devices.o fb.o serial.o timer.o pm.o \

obj-y := id.o io.o control.o mux.o devices.o fb.o timer.o pm.o \

	 common.o gpio.o dma.o wd_timer.o display.o i2c.o hdq1w.o omap_hwmod.o \

	 omap_device.o omap-headsmp.o sram.o drm.o

/*

 * arch/arm/mach-omap2/serial.c

 *

 * OMAP2 serial support.

 *

 * Copyright (C) 2005-2008 Nokia Corporation

 * Author: Paul Mundt <paul.mundt@nokia.com>

 *

 * Major rework for PM support by Kevin Hilman

 *

 * Based off of arch/arm/mach-omap/omap1/serial.c

 *

 * Copyright (C) 2009 Texas Instruments

 * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com

 *

 * This file is subject to the terms and conditions of the GNU General Public

 * License. See the file "COPYING" in the main directory of this archive

 * for more details.

 */

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <linux/delay.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/pm_runtime.h>

#include <linux/console.h>

#include <linux/omap-dma.h>

#include <linux/platform_data/serial-omap.h>

#include "common.h"

#include "omap_hwmod.h"

#include "omap_device.h"

#include "omap-pm.h"

#include "soc.h"

#include "prm2xxx_3xxx.h"

#include "pm.h"

#include "cm2xxx_3xxx.h"

#include "prm-regbits-34xx.h"

#include "control.h"

#include "mux.h"

#include "serial.h"

/*

 * NOTE: By default the serial auto_suspend timeout is disabled as it causes

 * lost characters over the serial ports. This means that the UART clocks will

 * stay on until power/autosuspend_delay is set for the uart from sysfs.

 * This also causes that any deeper omap sleep states are blocked.

 */

#define DEFAULT_AUTOSUSPEND_DELAY	-1

#define MAX_UART_HWMOD_NAME_LEN		16

struct omap_uart_state {

	int num;

	struct list_head node;

	struct omap_hwmod *oh;

	struct omap_device_pad default_omap_uart_pads[2];

};

static LIST_HEAD(uart_list);

static u8 num_uarts;

static u8 console_uart_id = -1;

static u8 uart_debug;

#define DEFAULT_RXDMA_POLLRATE		1	/* RX DMA polling rate (us) */

#define DEFAULT_RXDMA_BUFSIZE		4096	/* RX DMA buffer size */

#define DEFAULT_RXDMA_TIMEOUT		(3 * HZ)/* RX DMA timeout (jiffies) */

static struct omap_uart_port_info omap_serial_default_info[] __initdata = {

	{

		.dma_enabled	= false,

		.dma_rx_buf_size = DEFAULT_RXDMA_BUFSIZE,

		.dma_rx_poll_rate = DEFAULT_RXDMA_POLLRATE,

		.dma_rx_timeout = DEFAULT_RXDMA_TIMEOUT,

		.autosuspend_timeout = DEFAULT_AUTOSUSPEND_DELAY,

	},

};

#ifdef CONFIG_PM

static void omap_uart_enable_wakeup(struct device *dev, bool enable)

{

	struct platform_device *pdev = to_platform_device(dev);

	struct omap_device *od = to_omap_device(pdev);

	if (!od)

		return;

	if (enable)

		omap_hwmod_enable_wakeup(od->hwmods[0]);

	else

		omap_hwmod_disable_wakeup(od->hwmods[0]);

}

#else

static void omap_uart_enable_wakeup(struct device *dev, bool enable)

{}

#endif /* CONFIG_PM */

#ifdef CONFIG_OMAP_MUX

#define OMAP_UART_DEFAULT_PAD_NAME_LEN	28

static char rx_pad_name[OMAP_UART_DEFAULT_PAD_NAME_LEN],

		tx_pad_name[OMAP_UART_DEFAULT_PAD_NAME_LEN] __initdata;

static void  __init

omap_serial_fill_uart_tx_rx_pads(struct omap_board_data *bdata,

				struct omap_uart_state *uart)

{

	uart->default_omap_uart_pads[0].name = rx_pad_name;

	uart->default_omap_uart_pads[0].flags = OMAP_DEVICE_PAD_REMUX |

							OMAP_DEVICE_PAD_WAKEUP;

	uart->default_omap_uart_pads[0].enable = OMAP_PIN_INPUT |

							OMAP_MUX_MODE0;

	uart->default_omap_uart_pads[0].idle = OMAP_PIN_INPUT | OMAP_MUX_MODE0;

	uart->default_omap_uart_pads[1].name = tx_pad_name;

	uart->default_omap_uart_pads[1].enable = OMAP_PIN_OUTPUT |

							OMAP_MUX_MODE0;

	bdata->pads = uart->default_omap_uart_pads;

	bdata->pads_cnt = ARRAY_SIZE(uart->default_omap_uart_pads);

}

static void  __init omap_serial_check_wakeup(struct omap_board_data *bdata,

						struct omap_uart_state *uart)

{

	struct omap_mux_partition *tx_partition = NULL, *rx_partition = NULL;

	struct omap_mux *rx_mux = NULL, *tx_mux = NULL;

	char *rx_fmt, *tx_fmt;

	int uart_nr = bdata->id + 1;

	if (bdata->id != 2) {

		rx_fmt = "uart%d_rx.uart%d_rx";

		tx_fmt = "uart%d_tx.uart%d_tx";

	} else {

		rx_fmt = "uart%d_rx_irrx.uart%d_rx_irrx";

		tx_fmt = "uart%d_tx_irtx.uart%d_tx_irtx";

	}

	snprintf(rx_pad_name, OMAP_UART_DEFAULT_PAD_NAME_LEN, rx_fmt,

			uart_nr, uart_nr);

	snprintf(tx_pad_name, OMAP_UART_DEFAULT_PAD_NAME_LEN, tx_fmt,

			uart_nr, uart_nr);

	if (omap_mux_get_by_name(rx_pad_name, &rx_partition, &rx_mux) >= 0 &&

			omap_mux_get_by_name

				(tx_pad_name, &tx_partition, &tx_mux) >= 0) {

		u16 tx_mode, rx_mode;

		tx_mode = omap_mux_read(tx_partition, tx_mux->reg_offset);

		rx_mode = omap_mux_read(rx_partition, rx_mux->reg_offset);

		/*

		 * Check if uart is used in default tx/rx mode i.e. in mux mode0

		 * if yes then configure rx pin for wake up capability

		 */

		if (OMAP_MODE_UART(rx_mode) && OMAP_MODE_UART(tx_mode))

			omap_serial_fill_uart_tx_rx_pads(bdata, uart);

	}

}

#else

static void __init omap_serial_check_wakeup(struct omap_board_data *bdata,

		struct omap_uart_state *uart)

{

}

#endif

static char *cmdline_find_option(char *str)

{

	extern char *saved_command_line;

	return strstr(saved_command_line, str);

}

static int __init omap_serial_early_init(void)

{

	if (of_have_populated_dt())

		return -ENODEV;

	do {

		char oh_name[MAX_UART_HWMOD_NAME_LEN];

		struct omap_hwmod *oh;

		struct omap_uart_state *uart;

		char uart_name[MAX_UART_HWMOD_NAME_LEN];

		snprintf(oh_name, MAX_UART_HWMOD_NAME_LEN,

			 "uart%d", num_uarts + 1);

		oh = omap_hwmod_lookup(oh_name);

		if (!oh)

			break;

		uart = kzalloc(sizeof(struct omap_uart_state), GFP_KERNEL);

		if (WARN_ON(!uart))

			return -ENODEV;

		uart->oh = oh;

		uart->num = num_uarts++;

		list_add_tail(&uart->node, &uart_list);

		snprintf(uart_name, MAX_UART_HWMOD_NAME_LEN,

				"%s%d", OMAP_SERIAL_NAME, uart->num);

		if (cmdline_find_option(uart_name)) {

			console_uart_id = uart->num;

			if (console_loglevel >= CONSOLE_LOGLEVEL_DEBUG) {

				uart_debug = true;

				pr_info("%s used as console in debug mode: uart%d clocks will not be gated",

					uart_name, uart->num);

			}

		}

	} while (1);

	return 0;

}

omap_postcore_initcall(omap_serial_early_init);

/**

 * omap_serial_init_port() - initialize single serial port

 * @bdata: port specific board data pointer

 * @info: platform specific data pointer

 *

 * This function initialies serial driver for given port only.

 * Platforms can call this function instead of omap_serial_init()

 * if they don't plan to use all available UARTs as serial ports.

 *

 * Don't mix calls to omap_serial_init_port() and omap_serial_init(),

 * use only one of the two.

 */

void __init omap_serial_init_port(struct omap_board_data *bdata,

			struct omap_uart_port_info *info)

{

	struct omap_uart_state *uart;

	struct omap_hwmod *oh;

	struct platform_device *pdev;

	void *pdata = NULL;

	u32 pdata_size = 0;

	char *name;

	struct omap_uart_port_info omap_up;

	if (WARN_ON(!bdata))

		return;

	if (WARN_ON(bdata->id < 0))

		return;

	if (WARN_ON(bdata->id >= num_uarts))

		return;

	list_for_each_entry(uart, &uart_list, node)

		if (bdata->id == uart->num)

			break;

	if (!info)

		info = omap_serial_default_info;

	oh = uart->oh;

	name = OMAP_SERIAL_DRIVER_NAME;

	omap_up.dma_enabled = info->dma_enabled;

	omap_up.uartclk = OMAP24XX_BASE_BAUD * 16;

	omap_up.flags = UPF_BOOT_AUTOCONF;

	omap_up.get_context_loss_count = omap_pm_get_dev_context_loss_count;

	omap_up.enable_wakeup = omap_uart_enable_wakeup;

	omap_up.dma_rx_buf_size = info->dma_rx_buf_size;

	omap_up.dma_rx_timeout = info->dma_rx_timeout;

	omap_up.dma_rx_poll_rate = info->dma_rx_poll_rate;

	omap_up.autosuspend_timeout = info->autosuspend_timeout;

	pdata = &omap_up;

	pdata_size = sizeof(struct omap_uart_port_info);

	if (WARN_ON(!oh))

		return;

	pdev = omap_device_build(name, uart->num, oh, pdata, pdata_size);

	if (IS_ERR(pdev)) {

		WARN(1, "Could not build omap_device for %s: %s.\n", name,

		     oh->name);

		return;

	}

	oh->mux = omap_hwmod_mux_init(bdata->pads, bdata->pads_cnt);

	if (console_uart_id == bdata->id) {

		omap_device_enable(pdev);

		pm_runtime_set_active(&pdev->dev);

	}

	oh->dev_attr = uart;

	if (((cpu_is_omap34xx() || cpu_is_omap44xx()) && bdata->pads)

			&& !uart_debug)

		device_init_wakeup(&pdev->dev, true);

}

/**

 * omap_serial_board_init() - initialize all supported serial ports

 * @info: platform specific data pointer

 *

 * Initializes all available UARTs as serial ports. Platforms

 * can call this function when they want to have default behaviour

 * for serial ports (e.g initialize them all as serial ports).

 */

void __init omap_serial_board_init(struct omap_uart_port_info *info)

{

	struct omap_uart_state *uart;

	struct omap_board_data bdata;

	list_for_each_entry(uart, &uart_list, node) {

		bdata.id = uart->num;

		bdata.flags = 0;

		bdata.pads = NULL;

		bdata.pads_cnt = 0;

		omap_serial_check_wakeup(&bdata, uart);

		if (!info)

			omap_serial_init_port(&bdata, NULL);

		else

			omap_serial_init_port(&bdata, &info[uart->num]);

	}

}

/**

 * omap_serial_init() - initialize all supported serial ports

 *

 * Initializes all available UARTs.

 * Platforms can call this function when they want to have default behaviour

 * for serial ports (e.g initialize them all as serial ports).

 */

void __init omap_serial_init(void)

{

	omap_serial_board_init(NULL);

}