From be479339bd5e41869f0fa63bb226b28298705b10 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Sun, 31 Jan 2016 09:16:13 -0700
Subject: [PATCH] dm: opencores: Drop opencores_yanu serial driver

This does not appear to be used, and has not been converted to driver model
by the deadline (doc/driver-model/serial-howto.txt).

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
---
 drivers/serial/Makefile         |   1 -
 drivers/serial/opencores_yanu.c | 242 --------------------------------
 2 files changed, 243 deletions(-)
 delete mode 100644 drivers/serial/opencores_yanu.c

diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index cc4aa35912..fa583045eb 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -22,7 +22,6 @@ obj-$(CONFIG_ATMEL_USART) += atmel_usart.o
 obj-$(CONFIG_EFI_APP) += serial_efi.o
 obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
 obj-$(CONFIG_MCFUART) += mcfuart.o
-obj-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o
 obj-$(CONFIG_SYS_NS16550) += ns16550.o
 obj-$(CONFIG_S5P) += serial_s5p.o
 obj-$(CONFIG_IMX_SERIAL) += serial_imx.o
diff --git a/drivers/serial/opencores_yanu.c b/drivers/serial/opencores_yanu.c
deleted file mode 100644
index f68c8d0f04..0000000000
--- a/drivers/serial/opencores_yanu.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * Altera NiosII YANU serial interface by Imagos
- * please see  http://www.opencores.org/project,yanu for
- * information/downloads
- *
- * Copyright 2010, Renato Andreola <renato.andreola@imagos.it>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <watchdog.h>
-#include <asm/io.h>
-#include <serial.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*-----------------------------------------------------------------*/
-/* YANU Imagos serial port */
-/*-----------------------------------------------------------------*/
-
-#define YANU_MAX_PRESCALER_N   ((1 << 4) - 1)	/* 15 */
-#define YANU_MAX_PRESCALER_M   ((1 << 11) -1)	/* 2047 */
-#define YANU_FIFO_SIZE         (16)
-#define YANU_RXFIFO_SIZE       (YANU_FIFO_SIZE)
-#define YANU_TXFIFO_SIZE       (YANU_FIFO_SIZE)
-
-#define YANU_RXFIFO_DLY        (10*11)
-#define YANU_TXFIFO_THR        (10)
-#define YANU_DATA_CHAR_MASK    (0xFF)
-
-/* data register */
-#define YANU_DATA_OFFSET       (0)	/* data register offset */
-
-#define YANU_CONTROL_OFFSET    (4)	/* control register offset */
-/* interrupt enable */
-#define YANU_CONTROL_IE_RRDY   (1<<0)	/* ie on received character ready */
-#define YANU_CONTROL_IE_OE     (1<<1)	/* ie on rx overrun    */
-#define YANU_CONTROL_IE_BRK    (1<<2)	/* ie on break detect  */
-#define YANU_CONTROL_IE_FE     (1<<3)	/* ie on framing error */
-#define YANU_CONTROL_IE_PE     (1<<4)	/* ie on parity error  */
-#define YANU_CONTROL_IE_TRDY   (1<<5)	/* ie interrupt on tranmitter ready */
-/* control bits */
-#define YANU_CONTROL_BITS_POS  (6)	/* bits number pos */
-#define YANU_CONTROL_BITS      (1<<YANU_CONTROL_BITS_POS)	/* number of rx/tx bits per word. 3 bit unsigned integer */
-#define YANU_CONTROL_BITS_N    (3)	/* ... its bit filed length */
-#define YANU_CONTROL_PARENA    (1<<9)	/*  enable parity bit transmission/reception */
-#define YANU_CONTROL_PAREVEN   (1<<10)	/* parity even */
-#define YANU_CONTROL_STOPS     (1<<11)	/* number of stop bits */
-#define YANU_CONTROL_HHENA     (1<<12)	/* Harware Handshake enable... */
-#define YANU_CONTROL_FORCEBRK  (1<<13)	/* if set than txd = active (0) */
-/* tuning part */
-#define YANU_CONTROL_RDYDLY    (1<<14)	/* delay from "first" before setting rrdy (in bit) */
-#define YANU_CONTROL_RDYDLY_N  (8)	/* ... its bit filed length */
-#define YANU_CONTROL_TXTHR     (1<<22)	/* tx interrupt threshold: the trdy set if txfifo_chars<= txthr (chars) */
-#define YANU_CONTROL_TXTHR_N   (4)	/* ... its bit field length */
-
-#define YANU_BAUD_OFFSET  (8)	/* baud register offset */
-#define YANU_BAUDM        (1<<0)	/* baud mantissa lsb */
-#define YANU_BAUDM_N      (12)	/* ...its bit filed length */
-#define YANU_BAUDE        (1<<12)	/* baud exponent lsb */
-#define YANU_BAUDE_N      (4)	/* ...its bit field length */
-
-#define YANU_ACTION_OFFSET   (12)	/* action register... write only */
-#define YANU_ACTION_RRRDY    (1<<0)	/* reset rrdy */
-#define YANU_ACTION_ROE      (1<<1)	/* reset oe */
-#define YANU_ACTION_RBRK     (1<<2)	/* reset brk */
-#define YANU_ACTION_RFE      (1<<3)	/* reset fe  */
-#define YANU_ACTION_RPE      (1<<4)	/* reset pe  */
-#define YANU_ACTION_SRRDY    (1<<5)	/* set rrdy  */
-#define YANU_ACTION_SOE      (1<<6)	/* set oe    */
-#define YANU_ACTION_SBRK     (1<<7)	/* set brk   */
-#define YANU_ACTION_SFE      (1<<8)	/* set fe    */
-#define YANU_ACTION_SPE      (1<<9)	/* set pe    */
-#define YANU_ACTION_RFIFO_PULL  (1<<10)	/* pull a char from rx fifo we MUST do it before taking a char */
-#define YANU_ACTION_RFIFO_CLEAR (1<<11)	/* clear rx fifo */
-#define YANU_ACTION_TFIFO_CLEAR (1<<12)	/* clear tx fifo */
-#define YANU_ACTION_RTRDY       (1<<13)	/* clear trdy    */
-#define YANU_ACTION_STRDY       (1<<14)	/* set trdy      */
-
-#define YANU_STATUS_OFFSET   (16)
-#define YANU_STATUS_RRDY     (1<<0)	/* rxrdy flag */
-#define YANU_STATUS_TRDY     (1<<1)	/* txrdy flag */
-#define YANU_STATUS_OE       (1<<2)	/* rx overrun error */
-#define YANU_STATUS_BRK      (1<<3)	/* rx break detect flag */
-#define YANU_STATUS_FE       (1<<4)	/* rx framing error flag */
-#define YANU_STATUS_PE       (1<<5)	/* rx parity erro flag */
-#define YANU_RFIFO_CHARS_POS (6)
-#define YANU_RFIFO_CHARS     (1<<RFIFO_CHAR_POS)	/* number of chars into rx fifo */
-#define YANU_RFIFO_CHARS_N   (5)	/* ...its bit field length: 32 chars */
-#define YANU_TFIFO_CHARS_POS (11)
-#define YANU_TFIFO_CHARS     (1<<TFIFO_CHAR_POS)	/* number of chars into tx fifo */
-#define YANU_TFIFO_CHARS_N   (5)	/* ...its bit field length: 32 chars */
-
-typedef volatile struct {
-	volatile unsigned data;
-	volatile unsigned control;	/* control register (RW) 32-bit   */
-	volatile unsigned baud;	/* baud/prescaler register (RW) 32-bit */
-	volatile unsigned action;	/* action register (W) 32-bit */
-	volatile unsigned status;	/* status register (R) 32-bit */
-	volatile unsigned magic;	/* magic register (R) 32-bit */
-} yanu_uart_t;
-
-static yanu_uart_t *uart = (yanu_uart_t *)CONFIG_SYS_NIOS_CONSOLE;
-
-static void oc_serial_setbrg(void)
-{
-	int n, k;
-	const unsigned max_uns = 0xFFFFFFFF;
-	unsigned best_n, best_m, baud;
-	unsigned baudrate;
-
-#if defined(CONFIG_SYS_NIOS_FIXEDBAUD)
-	/* Everything's already setup for fixed-baud PTF assignment */
-	baudrate = CONFIG_BAUDRATE;
-#else
-	baudrate = gd->baudrate;
-#endif
-	/* compute best N and M couple */
-	best_n = YANU_MAX_PRESCALER_N;
-	for (n = YANU_MAX_PRESCALER_N; n >= 0; n--) {
-		if ((unsigned)CONFIG_SYS_CLK_FREQ / (1 << (n + 4)) >=
-		    baudrate) {
-			best_n = n;
-			break;
-		}
-	}
-	for (k = 0;; k++) {
-		if (baudrate <= (max_uns >> (15+n-k)))
-			break;
-	}
-	best_m =
-	    (baudrate * (1 << (15 + n - k))) /
-	    ((unsigned)CONFIG_SYS_CLK_FREQ >> k);
-
-	baud = best_m + best_n * YANU_BAUDE;
-	writel(baud, &uart->baud);
-
-	return;
-}
-
-static int oc_serial_init(void)
-{
-	unsigned action,control;
-
-	/* status register cleanup */
-	action =  YANU_ACTION_RRRDY     |
-		YANU_ACTION_RTRDY       |
-		YANU_ACTION_ROE         |
-		YANU_ACTION_RBRK        |
-		YANU_ACTION_RFE         |
-		YANU_ACTION_RPE         |
-	    YANU_ACTION_RFE | YANU_ACTION_RFIFO_CLEAR | YANU_ACTION_TFIFO_CLEAR;
-
-	writel(action, &uart->action);
-
-	/*
-	 * control register cleanup
-	 * no interrupts enabled
-	 * one stop bit
-	 * hardware flow control disabled
-	 * 8 bits
-	 */
-	control = (0x7 << YANU_CONTROL_BITS_POS);
-	/* enven parity just to be clean */
-	control |= YANU_CONTROL_PAREVEN;
-	/* we set threshold for fifo */
-	control |= YANU_CONTROL_RDYDLY * YANU_RXFIFO_DLY;
-	control |= YANU_CONTROL_TXTHR *  YANU_TXFIFO_THR;
-
-	writel(control, &uart->control);
-
-	/* to set baud rate */
-	serial_setbrg();
-
-	return (0);
-}
-
-
-/*-----------------------------------------------------------------------
- * YANU CONSOLE
- *---------------------------------------------------------------------*/
-static void oc_serial_putc(char c)
-{
-	int tx_chars;
-	unsigned status;
-
-	if (c == '\n')
-		serial_putc ('\r');
-
-	while (1) {
-		status = readl(&uart->status);
-		tx_chars = (status>>YANU_TFIFO_CHARS_POS)
-			& ((1<<YANU_TFIFO_CHARS_N)-1);
-		if (tx_chars < YANU_TXFIFO_SIZE-1)
-			break;
-		WATCHDOG_RESET ();
-	}
-
-	writel((unsigned char)c, &uart->data);
-}
-
-static int oc_serial_tstc(void)
-{
-	unsigned status ;
-
-	status = readl(&uart->status);
-	return (((status >> YANU_RFIFO_CHARS_POS) &
-		 ((1 << YANU_RFIFO_CHARS_N) - 1)) > 0);
-}
-
-static int oc_serial_getc(void)
-{
-	while (serial_tstc() == 0)
-		WATCHDOG_RESET ();
-
-	/* first we pull the char */
-	writel(YANU_ACTION_RFIFO_PULL, &uart->action);
-
-	return(readl(&uart->data) & YANU_DATA_CHAR_MASK);
-}
-
-static struct serial_device oc_serial_drv = {
-	.name	= "oc_serial",
-	.start	= oc_serial_init,
-	.stop	= NULL,
-	.setbrg	= oc_serial_setbrg,
-	.putc	= oc_serial_putc,
-	.puts	= default_serial_puts,
-	.getc	= oc_serial_getc,
-	.tstc	= oc_serial_tstc,
-};
-
-void oc_serial_initialize(void)
-{
-	serial_register(&oc_serial_drv);
-}
-
-__weak struct serial_device *default_serial_console(void)
-{
-	return &oc_serial_drv;
-}
-- 
2.30.2