powerpc, 8xx: move SPI driver to drivers/spi/

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>

2 files changed, 0 insertions, 340 deletions

diff --git a/arch/powerpc/cpu/mpc8xx/Makefile b/arch/powerpc/cpu/mpc8xx/Makefile
index f67c3f8..173cf01 100644
--- a/arch/powerpc/cpu/mpc8xx/Makefile
+++ b/arch/powerpc/cpu/mpc8xx/Makefile
@@ -15,4 +15,3 @@ obj-y	+= interrupts.o
 obj-$(CONFIG_CMD_REGINFO) += reginfo.o
 obj-y	+= serial.o
 obj-y	+= speed.o
-obj-y	+= spi.o
diff --git a/arch/powerpc/cpu/mpc8xx/spi.c b/arch/powerpc/cpu/mpc8xx/spi.c
deleted file mode 100644
index 6e3e86f..0000000
--- a/arch/powerpc/cpu/mpc8xx/spi.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/*
- * Copyright (c) 2001 Navin Boppuri / Prashant Patel
- *	<nboppuri@trinetcommunication.com>,
- *	<pmpatel@trinetcommunication.com>
- * Copyright (c) 2001 Gerd Mennchen <Gerd.Mennchen@icn.siemens.de>
- * Copyright (c) 2001 Wolfgang Denk, DENX Software Engineering, <wd@denx.de>.
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-/*
- * MPC8xx CPM SPI interface.
- *
- * Parts of this code are probably not portable and/or specific to
- * the board which I used for the tests. Please send fixes/complaints
- * to wd@denx.de
- *
- */
-
-#include <common.h>
-#include <mpc8xx.h>
-#include <commproc.h>
-#include <linux/ctype.h>
-#include <malloc.h>
-#include <post.h>
-#include <serial.h>
-
-#ifdef CONFIG_SPI
-
-#define SPI_EEPROM_WREN		0x06
-#define SPI_EEPROM_RDSR		0x05
-#define SPI_EEPROM_READ		0x03
-#define SPI_EEPROM_WRITE	0x02
-
-/* ---------------------------------------------------------------
- * Offset for initial SPI buffers in DPRAM:
- * We need a 520 byte scratch DPRAM area to use at an early stage.
- * It is used between the two initialization calls (spi_init_f()
- * and spi_init_r()).
- * The value 0xb00 makes it far enough from the start of the data
- * area (as well as from the stack pointer).
- * --------------------------------------------------------------- */
-#ifndef	CONFIG_SYS_SPI_INIT_OFFSET
-#define	CONFIG_SYS_SPI_INIT_OFFSET	0xB00
-#endif
-
-#define CPM_SPI_BASE_RX	CPM_SPI_BASE
-#define CPM_SPI_BASE_TX	(CPM_SPI_BASE + sizeof(cbd_t))
-
-/* -------------------
- * Function prototypes
- * ------------------- */
-ssize_t spi_xfer(size_t);
-
-/* -------------------
- * Variables
- * ------------------- */
-
-#define MAX_BUFFER	0x104
-
-/* ----------------------------------------------------------------------
- * Initially we place the RX and TX buffers at a fixed location in DPRAM!
- * ---------------------------------------------------------------------- */
-static uchar *rxbuf =
-	(uchar *)&((cpm8xx_t *)&((immap_t *)CONFIG_SYS_IMMR)->im_cpm)->cp_dpmem
-			[CONFIG_SYS_SPI_INIT_OFFSET];
-static uchar *txbuf =
-	(uchar *)&((cpm8xx_t *)&((immap_t *)CONFIG_SYS_IMMR)->im_cpm)->cp_dpmem
-			[CONFIG_SYS_SPI_INIT_OFFSET+MAX_BUFFER];
-
-/* **************************************************************************
- *
- *  Function:    spi_init_f
- *
- *  Description: Init SPI-Controller (ROM part)
- *
- *  return:      ---
- *
- * *********************************************************************** */
-void spi_init_f(void)
-{
-	immap_t __iomem *immr = (immap_t __iomem *)CONFIG_SYS_IMMR;
-	cpm8xx_t __iomem *cp = &immr->im_cpm;
-	spi_t __iomem *spi = (spi_t __iomem *)&cp->cp_dparam[PROFF_SPI];
-	cbd_t __iomem *tbdf, *rbdf;
-
-	/* Disable relocation */
-	out_be16(&spi->spi_rpbase, 0);
-
-/* 1 */
-	/* ------------------------------------------------
-	 * Initialize Port B SPI pins -> page 34-8 MPC860UM
-	 * (we are only in Master Mode !)
-	 * ------------------------------------------------ */
-
-	/* --------------------------------------------
-	 * GPIO or per. Function
-	 * PBPAR[28] = 1 [0x00000008] -> PERI: (SPIMISO)
-	 * PBPAR[29] = 1 [0x00000004] -> PERI: (SPIMOSI)
-	 * PBPAR[30] = 1 [0x00000002] -> PERI: (SPICLK)
-	 * PBPAR[31] = 0 [0x00000001] -> GPIO: (CS for PCUE/CCM-EEPROM)
-	 * -------------------------------------------- */
-	clrsetbits_be32(&cp->cp_pbpar, 0x00000001, 0x0000000E);	/* set  bits */
-
-	/* ----------------------------------------------
-	 * In/Out or per. Function 0/1
-	 * PBDIR[28] = 1 [0x00000008] -> PERI1: SPIMISO
-	 * PBDIR[29] = 1 [0x00000004] -> PERI1: SPIMOSI
-	 * PBDIR[30] = 1 [0x00000002] -> PERI1: SPICLK
-	 * PBDIR[31] = 1 [0x00000001] -> GPIO OUT: CS for PCUE/CCM-EEPROM
-	 * ---------------------------------------------- */
-	setbits_be32(&cp->cp_pbdir, 0x0000000F);
-
-	/* ----------------------------------------------
-	 * open drain or active output
-	 * PBODR[28] = 1 [0x00000008] -> open drain: SPIMISO
-	 * PBODR[29] = 0 [0x00000004] -> active output SPIMOSI
-	 * PBODR[30] = 0 [0x00000002] -> active output: SPICLK
-	 * PBODR[31] = 0 [0x00000001] -> active output GPIO OUT: CS for PCUE/CCM
-	 * ---------------------------------------------- */
-
-	clrsetbits_be16(&cp->cp_pbodr, 0x00000007, 0x00000008);
-
-	/* Initialize the parameter ram.
-	 * We need to make sure many things are initialized to zero
-	 */
-	out_be32(&spi->spi_rstate, 0);
-	out_be32(&spi->spi_rdp, 0);
-	out_be16(&spi->spi_rbptr, 0);
-	out_be16(&spi->spi_rbc, 0);
-	out_be32(&spi->spi_rxtmp, 0);
-	out_be32(&spi->spi_tstate, 0);
-	out_be32(&spi->spi_tdp, 0);
-	out_be16(&spi->spi_tbptr, 0);
-	out_be16(&spi->spi_tbc, 0);
-	out_be32(&spi->spi_txtmp, 0);
-
-/* 3 */
-	/* Set up the SPI parameters in the parameter ram */
-	out_be16(&spi->spi_rbase, CPM_SPI_BASE_RX);
-	out_be16(&spi->spi_tbase, CPM_SPI_BASE_TX);
-
-	/***********IMPORTANT******************/
-
-	/*
-	 * Setting transmit and receive buffer descriptor pointers
-	 * initially to rbase and tbase. Only the microcode patches
-	 * documentation talks about initializing this pointer. This
-	 * is missing from the sample I2C driver. If you dont
-	 * initialize these pointers, the kernel hangs.
-	 */
-	out_be16(&spi->spi_rbptr, CPM_SPI_BASE_RX);
-	out_be16(&spi->spi_tbptr, CPM_SPI_BASE_TX);
-
-/* 4 */
-	/* Init SPI Tx + Rx Parameters */
-	while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG)
-		;
-
-	out_be16(&cp->cp_cpcr, mk_cr_cmd(CPM_CR_CH_SPI, CPM_CR_INIT_TRX) |
-			       CPM_CR_FLG);
-	while (in_be16(&cp->cp_cpcr) & CPM_CR_FLG)
-		;
-
-/* 5 */
-	/* Set SDMA configuration register */
-	out_be32(&immr->im_siu_conf.sc_sdcr, 0x0001);
-
-/* 6 */
-	/* Set to big endian. */
-	out_8(&spi->spi_tfcr, SMC_EB);
-	out_8(&spi->spi_rfcr, SMC_EB);
-
-/* 7 */
-	/* Set maximum receive size. */
-	out_be16(&spi->spi_mrblr, MAX_BUFFER);
-
-/* 8 + 9 */
-	/* tx and rx buffer descriptors */
-	tbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_TX];
-	rbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_RX];
-
-	clrbits_be16(&tbdf->cbd_sc, BD_SC_READY);
-	clrbits_be16(&rbdf->cbd_sc, BD_SC_EMPTY);
-
-	/* Set the bd's rx and tx buffer address pointers */
-	out_be32(&rbdf->cbd_bufaddr, (ulong)rxbuf);
-	out_be32(&tbdf->cbd_bufaddr, (ulong)txbuf);
-
-/* 10 + 11 */
-	out_8(&cp->cp_spim, 0);			/* Mask  all SPI events */
-	out_8(&cp->cp_spie, SPI_EMASK);		/* Clear all SPI events	*/
-
-	return;
-}
-
-/* **************************************************************************
- *
- *  Function:    spi_init_r
- *
- *  Description: Init SPI-Controller (RAM part) -
- *		 The malloc engine is ready and we can move our buffers to
- *		 normal RAM
- *
- *  return:      ---
- *
- * *********************************************************************** */
-void spi_init_r(void)
-{
-	immap_t __iomem *immr = (immap_t __iomem *)CONFIG_SYS_IMMR;
-	cpm8xx_t __iomem *cp = &immr->im_cpm;
-	spi_t __iomem *spi = (spi_t __iomem *)&cp->cp_dparam[PROFF_SPI];
-	cbd_t __iomem *tbdf, *rbdf;
-
-	/* Disable relocation */
-	out_be16(&spi->spi_rpbase, 0);
-
-	/* tx and rx buffer descriptors */
-	tbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_TX];
-	rbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_RX];
-
-	/* Allocate memory for RX and TX buffers */
-	rxbuf = (uchar *)malloc(MAX_BUFFER);
-	txbuf = (uchar *)malloc(MAX_BUFFER);
-
-	out_be32(&rbdf->cbd_bufaddr, (ulong)rxbuf);
-	out_be32(&tbdf->cbd_bufaddr, (ulong)txbuf);
-
-	return;
-}
-
-/****************************************************************************
- *  Function:    spi_write
- **************************************************************************** */
-ssize_t spi_write(uchar *addr, int alen, uchar *buffer, int len)
-{
-	int i;
-
-	memset(rxbuf, 0, MAX_BUFFER);
-	memset(txbuf, 0, MAX_BUFFER);
-	*txbuf = SPI_EEPROM_WREN;		/* write enable		*/
-	spi_xfer(1);
-	memcpy(txbuf, addr, alen);
-	*txbuf = SPI_EEPROM_WRITE;		/* WRITE memory array	*/
-	memcpy(alen + txbuf, buffer, len);
-	spi_xfer(alen + len);
-						/* ignore received data	*/
-	for (i = 0; i < 1000; i++) {
-		*txbuf = SPI_EEPROM_RDSR;	/* read status		*/
-		txbuf[1] = 0;
-		spi_xfer(2);
-		if (!(rxbuf[1] & 1))
-			break;
-		udelay(1000);
-	}
-	if (i >= 1000)
-		printf("*** spi_write: Time out while writing!\n");
-
-	return len;
-}
-
-/****************************************************************************
- *  Function:    spi_read
- **************************************************************************** */
-ssize_t spi_read(uchar *addr, int alen, uchar *buffer, int len)
-{
-	memset(rxbuf, 0, MAX_BUFFER);
-	memset(txbuf, 0, MAX_BUFFER);
-	memcpy(txbuf, addr, alen);
-	*txbuf = SPI_EEPROM_READ;		/* READ memory array	*/
-
-	/*
-	 * There is a bug in 860T (?) that cuts the last byte of input
-	 * if we're reading into DPRAM. The solution we choose here is
-	 * to always read len+1 bytes (we have one extra byte at the
-	 * end of the buffer).
-	 */
-	spi_xfer(alen + len + 1);
-	memcpy(buffer, alen + rxbuf, len);
-
-	return len;
-}
-
-/****************************************************************************
- *  Function:    spi_xfer
- **************************************************************************** */
-ssize_t spi_xfer(size_t count)
-{
-	immap_t __iomem *immr = (immap_t __iomem *)CONFIG_SYS_IMMR;
-	cpm8xx_t __iomem *cp = &immr->im_cpm;
-	spi_t __iomem *spi = (spi_t __iomem *)&cp->cp_dparam[PROFF_SPI];
-	cbd_t __iomem *tbdf, *rbdf;
-	int tm;
-
-	/* Disable relocation */
-	out_be16(&spi->spi_rpbase, 0);
-
-	tbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_TX];
-	rbdf = (cbd_t __iomem *)&cp->cp_dpmem[CPM_SPI_BASE_RX];
-
-	/* Set CS for device */
-	clrbits_be32(&cp->cp_pbdat, 0x0001);
-
-	/* Setting tx bd status and data length */
-	out_be16(&tbdf->cbd_sc, BD_SC_READY | BD_SC_LAST | BD_SC_WRAP);
-	out_be16(&tbdf->cbd_datlen, count);
-
-	/* Setting rx bd status and data length */
-	out_be16(&rbdf->cbd_sc, BD_SC_EMPTY | BD_SC_WRAP);
-	out_be16(&rbdf->cbd_datlen, 0);	 /* rx length has no significance */
-
-	clrsetbits_be16(&cp->cp_spmode, ~SPMODE_LOOP, SPMODE_REV | SPMODE_MSTR |
-			SPMODE_EN | SPMODE_LEN(8) | SPMODE_PM(0x8));
-	out_8(&cp->cp_spim, 0);		/* Mask  all SPI events */
-	out_8(&cp->cp_spie, SPI_EMASK);	/* Clear all SPI events	*/
-
-	/* start spi transfer */
-	setbits_8(&cp->cp_spcom, SPI_STR);		/* Start transmit */
-
-	/* --------------------------------
-	 * Wait for SPI transmit to get out
-	 * or time out (1 second = 1000 ms)
-	 * -------------------------------- */
-	for (tm = 0; tm < 1000; ++tm) {
-		if (in_8(&cp->cp_spie) & SPI_TXB)	/* Tx Buffer Empty */
-			break;
-		if ((in_be16(&tbdf->cbd_sc) & BD_SC_READY) == 0)
-			break;
-		udelay(1000);
-	}
-	if (tm >= 1000)
-		printf("*** spi_xfer: Time out while xferring to/from SPI!\n");
-
-	/* Clear CS for device */
-	setbits_be32(&cp->cp_pbdat, 0x0001);
-
-	return count;
-}
-#endif	/* CONFIG_SPI */