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>

1 files changed, 0 insertions, 245 deletions

diff --git a/drivers/spi/oc_tiny_spi.c b/drivers/spi/oc_tiny_spi.c
deleted file mode 100644
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;
-}