[U-Boot] [PATCH 25/34] spi: Zap lpc32xx_ssp driver-related code

Jagan Teki
2018-11-20T12:48:05Z

Dropped
- lpc32xx_ssp driver
- SPI, SPI flash CONFIG-items
- CMD_SPI, CMD_SF..etc

Dropped becuase
- no active updates
- no dm conversion
- multiple pings for asking dm-conversion
- no reponse for dm converted patch
- driver-model migration expiry

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
configs/devkit3250_defconfig | 3 -
configs/work_92105_defconfig | 3 -
drivers/spi/Kconfig | 5 --
drivers/spi/Makefile | 1 -
drivers/spi/lpc32xx_ssp.c | 134 -----------------------------------
include/configs/devkit3250.h | 5 --
include/configs/work_92105.h | 5 --
scripts/config_whitelist.txt | 1 -
8 files changed, 157 deletions(-)
delete mode 100644 drivers/spi/lpc32xx_ssp.c

diff --git a/configs/devkit3250_defconfig b/configs/devkit3250_defconfig
index b739f27803..7473f9c202 100644
--- a/configs/devkit3250_defconfig
+++ b/configs/devkit3250_defconfig
@@ -19,7 +19,6 @@ CONFIG_CMD_IMLS=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_I2C=y
CONFIG_CMD_NAND=y
-CONFIG_CMD_SPI=y
CONFIG_CMD_USB=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_CMD_DHCP=y
@@ -41,8 +40,6 @@ CONFIG_PHYLIB=y
CONFIG_PHY_ADDR_ENABLE=y
CONFIG_PHY_ADDR=31
CONFIG_SYS_NS16550=y
-CONFIG_SPI=y
-CONFIG_LPC32XX_SSP=y
CONFIG_USB=y
CONFIG_USB_STORAGE=y
CONFIG_OF_LIBFDT=y
diff --git a/configs/work_92105_defconfig b/configs/work_92105_defconfig
index 105e51a400..988e7999cc 100644
--- a/configs/work_92105_defconfig
+++ b/configs/work_92105_defconfig
@@ -25,7 +25,6 @@ CONFIG_CMD_EEPROM=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_I2C=y
CONFIG_CMD_NAND=y
-CONFIG_CMD_SPI=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_CMD_DHCP=y
CONFIG_CMD_MII=y
@@ -37,5 +36,3 @@ CONFIG_ENV_IS_IN_NAND=y
CONFIG_PHYLIB=y
CONFIG_PHY_ADDR_ENABLE=y
CONFIG_SYS_NS16550=y
-CONFIG_SPI=y
-CONFIG_LPC32XX_SSP=y
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index 1f37f1083d..bf134ef437 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -317,11 +317,6 @@ config KIRKWOOD_SPI
Enable support for SPI on various Marvell SoCs, such as
Kirkwood and Armada 375.

-config LPC32XX_SSP
- bool "LPC32XX SPI Driver"
- help
- Enable support for SPI on LPC32xx
-
config MPC8XX_SPI
bool "MPC8XX SPI Driver"
depends on MPC8xx
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 890e919f49..7d676988fd 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_FSL_DSPI) += fsl_dspi.o
obj-$(CONFIG_FSL_ESPI) += fsl_espi.o
obj-$(CONFIG_FSL_QSPI) += fsl_qspi.o
obj-$(CONFIG_ICH_SPI) += ich.o
-obj-$(CONFIG_LPC32XX_SSP) += lpc32xx_ssp.o
obj-$(CONFIG_MPC8XX_SPI) += mpc8xx_spi.o
obj-$(CONFIG_MT7621_SPI) += mt7621_spi.o
obj-$(CONFIG_MVEBU_A3700_SPI) += mvebu_a3700_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 */
-}
diff --git a/include/configs/devkit3250.h b/include/configs/devkit3250.h
index 2f8c655b2c..e1f729a854 100644
--- a/include/configs/devkit3250.h
+++ b/include/configs/devkit3250.h
@@ -58,11 +58,6 @@
*/
#define CONFIG_LPC32XX_GPIO

-/*
- * SSP/SPI
- */
-#define CONFIG_LPC32XX_SSP_TIMEOUT 100000
-
/*
* Ethernet
*/
diff --git a/include/configs/work_92105.h b/include/configs/work_92105.h
index 67b5e9aa11..9d9a53ef09 100644
--- a/include/configs/work_92105.h
+++ b/include/configs/work_92105.h
@@ -109,11 +109,6 @@

#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 abfb0ff89f..ff25315363 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -1172,7 +1172,6 @@ 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
--
2.18.0.321.gffc6fa0e3