spi: Zap oc_tiny_spi driver

Zap oc_tiny_spi driver since the boards used this driver
is no longer been active.

Signed-off-by: Jagan Teki <jteki@openedev.com>
Cc: Thomas Chou <thomas@wytron.com.tw>

diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 1e3611da04f1ef0de85b346396af434c5c7612bd..507c31510dac582db6ce14736ba11b6e48de0d85 100644 (file)
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -35,7 +35,6 @@ obj-$(CONFIG_MPC52XX_SPI) += mpc52xx_spi.o
 obj-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
 obj-$(CONFIG_MXC_SPI) += mxc_spi.o
 obj-$(CONFIG_MXS_SPI) += mxs_spi.o
-obj-$(CONFIG_OC_TINY_SPI) += oc_tiny_spi.o
 obj-$(CONFIG_OMAP3_SPI) += omap3_spi.o
 obj-$(CONFIG_SANDBOX_SPI) += sandbox_spi.o
 obj-$(CONFIG_SH_SPI) += sh_spi.o

diff --git a/drivers/spi/oc_tiny_spi.c b/drivers/spi/oc_tiny_spi.c
deleted file mode 100644 (file)
index 4de5d00..0000000
--- a/drivers/spi/oc_tiny_spi.c
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * Opencore tiny_spi driver
- *
- * http://opencores.org/project,tiny_spi
- *
- * based on bfin_spi.c
- * Copyright (c) 2005-2008 Analog Devices Inc.
- * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
- *
- * SPDX-License-Identifier:    GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <malloc.h>
-#include <spi.h>
-#include <asm/gpio.h>
-
-#define TINY_SPI_STATUS_TXE 0x1
-#define TINY_SPI_STATUS_TXR 0x2
-
-struct tiny_spi_regs {
-       unsigned rxdata;        /* Rx data reg */
-       unsigned txdata;        /* Tx data reg */
-       unsigned status;        /* Status reg */
-       unsigned control;       /* Control reg */
-       unsigned baud;          /* Baud reg */
-};
-
-struct tiny_spi_host {
-       uint base;
-       uint freq;
-       uint baudwidth;
-};
-static const struct tiny_spi_host tiny_spi_host_list[] =
-       CONFIG_SYS_TINY_SPI_LIST;
-
-struct tiny_spi_slave {
-       struct spi_slave slave;
-       const struct tiny_spi_host *host;
-       uint mode;
-       uint baud;
-       uint flg;
-};
-#define to_tiny_spi_slave(s) container_of(s, struct tiny_spi_slave, slave)
-
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-       return bus < ARRAY_SIZE(tiny_spi_host_list) && gpio_is_valid(cs);
-}
-
-void spi_cs_activate(struct spi_slave *slave)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-       unsigned int cs = slave->cs;
-
-       gpio_set_value(cs, tiny_spi->flg);
-       debug("%s: SPI_CS_GPIO:%x\n", __func__, gpio_get_value(cs));
-}
-
-void spi_cs_deactivate(struct spi_slave *slave)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-       unsigned int cs = slave->cs;
-
-       gpio_set_value(cs, !tiny_spi->flg);
-       debug("%s: SPI_CS_GPIO:%x\n", __func__, gpio_get_value(cs));
-}
-
-void spi_set_speed(struct spi_slave *slave, uint hz)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-       const struct tiny_spi_host *host = tiny_spi->host;
-
-       tiny_spi->baud = min(DIV_ROUND_UP(host->freq, hz * 2),
-                            (1 << host->baudwidth)) - 1;
-       debug("%s: speed %u actual %u\n", __func__, hz,
-             host->freq / ((tiny_spi->baud + 1) * 2));
-}
-
-void spi_init(void)
-{
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
-                                 unsigned int hz, unsigned int mode)
-{
-       struct tiny_spi_slave *tiny_spi;
-
-       if (!spi_cs_is_valid(bus, cs) || gpio_request(cs, "tiny_spi"))
-               return NULL;
-
-       tiny_spi = spi_alloc_slave(struct tiny_spi_slave, bus, cs);
-       if (!tiny_spi)
-               return NULL;
-
-       tiny_spi->host = &tiny_spi_host_list[bus];
-       tiny_spi->mode = mode & (SPI_CPOL | SPI_CPHA);
-       tiny_spi->flg = mode & SPI_CS_HIGH ? 1 : 0;
-       spi_set_speed(&tiny_spi->slave, hz);
-
-       debug("%s: bus:%i cs:%i base:%lx\n", __func__,
-               bus, cs, tiny_spi->host->base);
-       return &tiny_spi->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-
-       gpio_free(slave->cs);
-       free(tiny_spi);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-       struct tiny_spi_regs *regs = (void *)tiny_spi->host->base;
-
-       debug("%s: bus:%i cs:%i\n", __func__, slave->bus, slave->cs);
-       gpio_direction_output(slave->cs, !tiny_spi->flg);
-       writel(tiny_spi->mode, &regs->control);
-       writel(tiny_spi->baud, &regs->baud);
-       return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-       debug("%s: bus:%i cs:%i\n", __func__, slave->bus, slave->cs);
-}
-
-#ifndef CONFIG_TINY_SPI_IDLE_VAL
-# define CONFIG_TINY_SPI_IDLE_VAL 0xff
-#endif
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
-            void *din, unsigned long flags)
-{
-       struct tiny_spi_slave *tiny_spi = to_tiny_spi_slave(slave);
-       struct tiny_spi_regs *regs = (void *)tiny_spi->host->base;
-       const u8 *txp = dout;
-       u8 *rxp = din;
-       uint bytes = bitlen / 8;
-       uint i;
-
-       debug("%s: bus:%i cs:%i bitlen:%i bytes:%i flags:%lx\n", __func__,
-               slave->bus, slave->cs, bitlen, bytes, flags);
-       if (bitlen == 0)
-               goto done;
-
-       /* assume to do 8 bits transfers */
-       if (bitlen % 8) {
-               flags |= SPI_XFER_END;
-               goto done;
-       }
-
-       if (flags & SPI_XFER_BEGIN)
-               spi_cs_activate(slave);
-
-       /* we need to tighten the transfer loop */
-       if (txp && rxp) {
-               writeb(*txp++, &regs->txdata);
-               if (bytes > 1) {
-                       writeb(*txp++, &regs->txdata);
-                       for (i = 2; i < bytes; i++) {
-                               u8 rx, tx = *txp++;
-                               while (!(readb(&regs->status) &
-                                        TINY_SPI_STATUS_TXR))
-                                       ;
-                               rx = readb(&regs->txdata);
-                               writeb(tx, &regs->txdata);
-                               *rxp++ = rx;
-                       }
-                       while (!(readb(&regs->status) &
-                                TINY_SPI_STATUS_TXR))
-                               ;
-                       *rxp++ = readb(&regs->txdata);
-               }
-               while (!(readb(&regs->status) &
-                        TINY_SPI_STATUS_TXE))
-                       ;
-               *rxp++ = readb(&regs->rxdata);
-       } else if (rxp) {
-               writeb(CONFIG_TINY_SPI_IDLE_VAL, &regs->txdata);
-               if (bytes > 1) {
-                       writeb(CONFIG_TINY_SPI_IDLE_VAL,
-                              &regs->txdata);
-                       for (i = 2; i < bytes; i++) {
-                               u8 rx;
-                               while (!(readb(&regs->status) &
-                                        TINY_SPI_STATUS_TXR))
-                                       ;
-                               rx = readb(&regs->txdata);
-                               writeb(CONFIG_TINY_SPI_IDLE_VAL,
-                                      &regs->txdata);
-                               *rxp++ = rx;
-                       }
-                       while (!(readb(&regs->status) &
-                                TINY_SPI_STATUS_TXR))
-                               ;
-                       *rxp++ = readb(&regs->txdata);
-               }
-               while (!(readb(&regs->status) &
-                        TINY_SPI_STATUS_TXE))
-                       ;
-               *rxp++ = readb(&regs->rxdata);
-       } else if (txp) {
-               writeb(*txp++, &regs->txdata);
-               if (bytes > 1) {
-                       writeb(*txp++, &regs->txdata);
-                       for (i = 2; i < bytes; i++) {
-                               u8 tx = *txp++;
-                               while (!(readb(&regs->status) &
-                                        TINY_SPI_STATUS_TXR))
-                                       ;
-                               writeb(tx, &regs->txdata);
-                       }
-               }
-               while (!(readb(&regs->status) &
-                        TINY_SPI_STATUS_TXE))
-                       ;
-       } else {
-               writeb(CONFIG_TINY_SPI_IDLE_VAL, &regs->txdata);
-               if (bytes > 1) {
-                       writeb(CONFIG_TINY_SPI_IDLE_VAL,
-                              &regs->txdata);
-                       for (i = 2; i < bytes; i++) {
-                               while (!(readb(&regs->status) &
-                                        TINY_SPI_STATUS_TXR))
-                                       ;
-                               writeb(CONFIG_TINY_SPI_IDLE_VAL,
-                                      &regs->txdata);
-                       }
-               }
-               while (!(readb(&regs->status) &
-                        TINY_SPI_STATUS_TXE))
-                       ;
-       }
-
- done:
-       if (flags & SPI_XFER_END)
-               spi_cs_deactivate(slave);
-
-       return 0;
-}