[U-Boot] [PATCH] spi: Zap mpc8xx_spi driver
Jagan Teki
jagannadh.teki at gmail.com
Mon Feb 26 14:43:11 UTC 2018
- Driver not used by any boards
- No update on 'dm conversion'
Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
---
drivers/spi/Kconfig | 6 -
drivers/spi/Makefile | 1 -
drivers/spi/mpc8xx_spi.c | 336 -----------------------------------------------
3 files changed, 343 deletions(-)
delete mode 100644 drivers/spi/mpc8xx_spi.c
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 235a8c7d73..fd3f115ccf 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -274,12 +274,6 @@ config LPC32XX_SSP
help
Enable support for SPI on LPC32xx
-config MPC8XX_SPI
- bool "MPC8XX SPI Driver"
- depends on 8xx
- help
- Enable support for SPI on MPC8XX
-
config MPC8XXX_SPI
bool "MPC8XXX SPI Driver"
help
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 4b6000fd9a..f104836630 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_FSL_QSPI) += fsl_qspi.o
obj-$(CONFIG_ICH_SPI) += ich.o
obj-$(CONFIG_KIRKWOOD_SPI) += kirkwood_spi.o
obj-$(CONFIG_LPC32XX_SSP) += lpc32xx_ssp.o
-obj-$(CONFIG_MPC8XX_SPI) += mpc8xx_spi.o
obj-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
obj-$(CONFIG_MVEBU_A3700_SPI) += mvebu_a3700_spi.o
obj-$(CONFIG_MXC_SPI) += mxc_spi.o
diff --git a/drivers/spi/mpc8xx_spi.c b/drivers/spi/mpc8xx_spi.c
deleted file mode 100644
index b5bd558526..0000000000
--- a/drivers/spi/mpc8xx_spi.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * Copyright (c) 2001 Navin Boppuri / Prashant Patel
- * <nboppuri at trinetcommunication.com>,
- * <pmpatel at trinetcommunication.com>
- * Copyright (c) 2001 Gerd Mennchen <Gerd.Mennchen at icn.siemens.de>
- * Copyright (c) 2001 Wolfgang Denk, DENX Software Engineering, <wd at 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 at denx.de
- *
- */
-
-#include <common.h>
-#include <mpc8xx.h>
-#include <commproc.h>
-#include <linux/ctype.h>
-#include <malloc.h>
-#include <post.h>
-#include <serial.h>
-
-#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;
-}
--
2.14.3
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