[MIPS] rbtx4938: Convert SPI codes to use generic SPI drivers

Use rtc-rs5c348 and at25 spi protocol driver and spi_txx9 spi
controller driver instead of platform dependent codes.

This patch also removes dependencies to old RTC interfaces such as
rtc_mips_get_time, etc.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 164 deletions

diff --git a/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c b/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
deleted file mode 100644
index 08b20cdfd7b..00000000000
--- a/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * linux/arch/mips/tx4938/toshiba_rbtx4938/spi_txx9.c
- * Copyright (C) 2000-2001 Toshiba Corporation
- *
- * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
- * terms of the GNU General Public License version 2. This program is
- * licensed "as is" without any warranty of any kind, whether express
- * or implied.
- *
- * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
- */
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <asm/tx4938/spi.h>
-#include <asm/tx4938/tx4938.h>
-
-static int (*txx9_spi_cs_func)(int chipid, int on);
-static DEFINE_SPINLOCK(txx9_spi_lock);
-
-extern unsigned int txx9_gbus_clock;
-
-#define SPI_FIFO_SIZE	4
-
-void __init txx9_spi_init(unsigned long base, int (*cs_func)(int chipid, int on))
-{
-	txx9_spi_cs_func = cs_func;
-	/* enter config mode */
-	tx4938_spiptr->mcr = TXx9_SPMCR_CONFIG | TXx9_SPMCR_BCLR;
-}
-
-static DECLARE_WAIT_QUEUE_HEAD(txx9_spi_wait);
-
-static irqreturn_t txx9_spi_interrupt(int irq, void *dev_id)
-{
-	/* disable rx intr */
-	tx4938_spiptr->cr0 &= ~TXx9_SPCR0_RBSIE;
-	wake_up(&txx9_spi_wait);
-
-	return IRQ_HANDLED;
-}
-
-static struct irqaction txx9_spi_action = {
-	.handler	= txx9_spi_interrupt,
-	.name		= "spi",
-};
-
-void __init txx9_spi_irqinit(int irc_irq)
-{
-	setup_irq(irc_irq, &txx9_spi_action);
-}
-
-int txx9_spi_io(int chipid, struct spi_dev_desc *desc,
-		unsigned char **inbufs, unsigned int *incounts,
-		unsigned char **outbufs, unsigned int *outcounts,
-		int cansleep)
-{
-	unsigned int incount, outcount;
-	unsigned char *inp, *outp;
-	int ret;
-	unsigned long flags;
-
-	spin_lock_irqsave(&txx9_spi_lock, flags);
-	if ((tx4938_spiptr->mcr & TXx9_SPMCR_OPMODE) == TXx9_SPMCR_ACTIVE) {
-		spin_unlock_irqrestore(&txx9_spi_lock, flags);
-		return -EBUSY;
-	}
-	/* enter config mode */
-	tx4938_spiptr->mcr = TXx9_SPMCR_CONFIG | TXx9_SPMCR_BCLR;
-	tx4938_spiptr->cr0 =
-		(desc->byteorder ? TXx9_SPCR0_SBOS : 0) |
-		(desc->polarity ? TXx9_SPCR0_SPOL : 0) |
-		(desc->phase ? TXx9_SPCR0_SPHA : 0) |
-		0x08;
-	tx4938_spiptr->cr1 =
-		(((TXX9_IMCLK + desc->baud) / (2 * desc->baud) - 1) << 8) |
-		0x08 /* 8 bit only */;
-	/* enter active mode */
-	tx4938_spiptr->mcr = TXx9_SPMCR_ACTIVE;
-	spin_unlock_irqrestore(&txx9_spi_lock, flags);
-
-	/* CS ON */
-	if ((ret = txx9_spi_cs_func(chipid, 1)) < 0) {
-		spin_unlock_irqrestore(&txx9_spi_lock, flags);
-		return ret;
-	}
-	udelay(desc->tcss);
-
-	/* do scatter IO */
-	inp = inbufs ? *inbufs : NULL;
-	outp = outbufs ? *outbufs : NULL;
-	incount = 0;
-	outcount = 0;
-	while (1) {
-		unsigned char data;
-		unsigned int count;
-		int i;
-		if (!incount) {
-			incount = incounts ? *incounts++ : 0;
-			inp = (incount && inbufs) ? *inbufs++ : NULL;
-		}
-		if (!outcount) {
-			outcount = outcounts ? *outcounts++ : 0;
-			outp = (outcount && outbufs) ? *outbufs++ : NULL;
-		}
-		if (!inp && !outp)
-			break;
-		count = SPI_FIFO_SIZE;
-		if (incount)
-			count = min(count, incount);
-		if (outcount)
-			count = min(count, outcount);
-
-		/* now tx must be idle... */
-		while (!(tx4938_spiptr->sr & TXx9_SPSR_SIDLE))
-			;
-
-		tx4938_spiptr->cr0 =
-			(tx4938_spiptr->cr0 & ~TXx9_SPCR0_RXIFL_MASK) |
-			((count - 1) << 12);
-		if (cansleep) {
-			/* enable rx intr */
-			tx4938_spiptr->cr0 |= TXx9_SPCR0_RBSIE;
-		}
-		/* send */
-		for (i = 0; i < count; i++)
-			tx4938_spiptr->dr = inp ? *inp++ : 0;
-		/* wait all rx data */
-		if (cansleep) {
-			wait_event(txx9_spi_wait,
-				   tx4938_spiptr->sr & TXx9_SPSR_SRRDY);
-		} else {
-			while (!(tx4938_spiptr->sr & TXx9_SPSR_RBSI))
-				;
-		}
-		/* receive */
-		for (i = 0; i < count; i++) {
-			data = tx4938_spiptr->dr;
-			if (outp)
-				*outp++ = data;
-		}
-		if (incount)
-			incount -= count;
-		if (outcount)
-			outcount -= count;
-	}
-
-	/* CS OFF */
-	udelay(desc->tcsh);
-	txx9_spi_cs_func(chipid, 0);
-	udelay(desc->tcsr);
-
-	spin_lock_irqsave(&txx9_spi_lock, flags);
-	/* enter config mode */
-	tx4938_spiptr->mcr = TXx9_SPMCR_CONFIG | TXx9_SPMCR_BCLR;
-	spin_unlock_irqrestore(&txx9_spi_lock, flags);
-
-	return 0;
-}