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>

diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 4166c61..dccd5ea 100644 (file)
--- 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 52462e1..6441694 100644 (file)
--- 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 (file)
index 4b09366..0000000
--- 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 */
-}

diff --git a/include/configs/devkit3250.h b/include/configs/devkit3250.h
index f1f2be0..4471a12 100644 (file)
--- a/include/configs/devkit3250.h
+++ b/include/configs/devkit3250.h
@@ -55,11 +55,6 @@
 #define CONFIG_LPC32XX_GPIO
 
 /*
- * SSP/SPI
- */
-#define CONFIG_LPC32XX_SSP_TIMEOUT     100000
-
-/*
  * Ethernet
  */
 #define CONFIG_RMII

diff --git a/include/configs/work_92105.h b/include/configs/work_92105.h
index 421384d..93c8d64 100644 (file)
--- a/include/configs/work_92105.h
+++ b/include/configs/work_92105.h
@@ -105,11 +105,6 @@
 #define CONFIG_LPC32XX_GPIO
 
 /*
- * SSP/SPI/DISPLAY
- */
-
-#define CONFIG_LPC32XX_SSP_TIMEOUT 100000
-/*
  * Environment
  */
 

diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 741e954..253c461 100644 (file)
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -1034,7 +1034,6 @@ CONFIG_LPC32XX_NAND_SLC_WDR_CLKS
 CONFIG_LPC32XX_NAND_SLC_WHOLD
 CONFIG_LPC32XX_NAND_SLC_WSETUP
 CONFIG_LPC32XX_NAND_SLC_WWIDTH
-CONFIG_LPC32XX_SSP_TIMEOUT
 CONFIG_LPC_BASE
 CONFIG_LPC_IO_BASE
 CONFIG_LPUART