spi: Zap lpc32xx_ssp driver-related code

lpc32xx_ssp driver is deprecated, no active updates
and no board user, hence dropped the same.

Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: Albert ARIBAUD <albert.aribaud@3adev.fr>
Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

3 files changed, 0 insertions, 141 deletions

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 4166c6104e..dccd5ea0d9 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -431,12 +431,6 @@ config KIRKWOOD_SPI
 	  Enable support for SPI on various Marvell SoCs, such as
 	  Kirkwood and Armada 375.
 
-config LPC32XX_SSP
-	bool "LPC32XX SPI Driver"
-	depends on DEPRECATED
-	help
-	  Enable support for SPI on LPC32xx
-
 config MXC_SPI
 	bool "MXC SPI Driver"
 	help
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 52462e19a3..6441694c8d 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_FSL_ESPI) += fsl_espi.o
 obj-$(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_MESON_SPIFC) += meson_spifc.o
 obj-$(CONFIG_MPC8XX_SPI) += mpc8xx_spi.o
 obj-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
diff --git a/drivers/spi/lpc32xx_ssp.c b/drivers/spi/lpc32xx_ssp.c
deleted file mode 100644
index 4b09366317..0000000000
--- a/drivers/spi/lpc32xx_ssp.c
+++ /dev/null
@@ -1,134 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * LPC32xx SSP interface (SPI mode)
- *
- * (C) Copyright 2014  DENX Software Engineering GmbH
- * Written-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
- */
-
-#include <common.h>
-#include <linux/compat.h>
-#include <asm/io.h>
-#include <malloc.h>
-#include <spi.h>
-#include <asm/arch/clk.h>
-
-/* SSP chip registers */
-struct ssp_regs {
-	u32 cr0;
-	u32 cr1;
-	u32 data;
-	u32 sr;
-	u32 cpsr;
-	u32 imsc;
-	u32 ris;
-	u32 mis;
-	u32 icr;
-	u32 dmacr;
-};
-
-/* CR1 register defines  */
-#define SSP_CR1_SSP_ENABLE 0x0002
-
-/* SR register defines  */
-#define SSP_SR_TNF 0x0002
-/* SSP status RX FIFO not empty bit */
-#define SSP_SR_RNE 0x0004
-
-/* lpc32xx spi slave */
-struct lpc32xx_spi_slave {
-	struct spi_slave slave;
-	struct ssp_regs *regs;
-};
-
-static inline struct lpc32xx_spi_slave *to_lpc32xx_spi_slave(
-	struct spi_slave *slave)
-{
-	return container_of(slave, struct lpc32xx_spi_slave, slave);
-}
-
-/* the following is called in sequence by do_spi_xfer() */
-
-struct spi_slave *spi_setup_slave(uint bus, uint cs, uint max_hz, uint mode)
-{
-	struct lpc32xx_spi_slave *lslave;
-
-	/* we only set up SSP0 for now, so ignore bus */
-
-	if (mode & SPI_3WIRE) {
-		pr_err("3-wire mode not supported");
-		return NULL;
-	}
-
-	if (mode & SPI_SLAVE) {
-		pr_err("slave mode not supported\n");
-		return NULL;
-	}
-
-	if (mode & SPI_PREAMBLE) {
-		pr_err("preamble byte skipping not supported\n");
-		return NULL;
-	}
-
-	lslave = spi_alloc_slave(struct lpc32xx_spi_slave, bus, cs);
-	if (!lslave) {
-		printf("SPI_error: Fail to allocate lpc32xx_spi_slave\n");
-		return NULL;
-	}
-
-	lslave->regs = (struct ssp_regs *)SSP0_BASE;
-
-	/*
-	 * 8 bit frame, SPI fmt, 500kbps -> clock divider is 26.
-	 * Set SCR to 0 and CPSDVSR to 26.
-	 */
-
-	writel(0x7, &lslave->regs->cr0); /* 8-bit chunks, SPI, 1 clk/bit */
-	writel(26, &lslave->regs->cpsr); /* SSP clock = HCLK/26 = 500kbps */
-	writel(0, &lslave->regs->imsc); /* do not raise any interrupts */
-	writel(0, &lslave->regs->icr); /* clear any pending interrupt */
-	writel(0, &lslave->regs->dmacr); /* do not do DMAs */
-	writel(SSP_CR1_SSP_ENABLE, &lslave->regs->cr1); /* enable SSP0 */
-	return &lslave->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
-	struct lpc32xx_spi_slave *lslave = to_lpc32xx_spi_slave(slave);
-
-	debug("(lpc32xx) spi_free_slave: 0x%08x\n", (u32)lslave);
-	free(lslave);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
-	/* only one bus and slave so far, always available */
-	return 0;
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
-	const void *dout, void *din, unsigned long flags)
-{
-	struct lpc32xx_spi_slave *lslave = to_lpc32xx_spi_slave(slave);
-	int bytelen = bitlen >> 3;
-	int idx_out = 0;
-	int idx_in = 0;
-	int start_time;
-
-	start_time = get_timer(0);
-	while ((idx_out < bytelen) || (idx_in < bytelen)) {
-		int status = readl(&lslave->regs->sr);
-		if ((idx_out < bytelen) && (status & SSP_SR_TNF))
-			writel(((u8 *)dout)[idx_out++], &lslave->regs->data);
-		if ((idx_in < bytelen) && (status & SSP_SR_RNE))
-			((u8 *)din)[idx_in++] = readl(&lslave->regs->data);
-		if (get_timer(start_time) >= CONFIG_LPC32XX_SSP_TIMEOUT)
-			return -1;
-	}
-	return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-	/* do nothing */
-}