[U-Boot] [PATCH 32/34] spi: Zap atmel_spi driver-related code

Jagan Teki
2018-11-20T12:48:12Z

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

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

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
Makefile | 5 +-
drivers/spi/Makefile | 2 +-
drivers/spi/atmel_spi.c | 198 ----------------------------------------
drivers/spi/spi.c | 1 +
4 files changed, 5 insertions(+), 201 deletions(-)

diff --git a/Makefile b/Makefile
index 00f0117b16..502a8e15f8 100644
--- a/Makefile
+++ b/Makefile
@@ -919,8 +919,9 @@ ifeq ($(CONFIG_DM_I2C_COMPAT)$(CONFIG_SANDBOX),y)
@echo "===================================================="
endif
ifeq ($(CONFIG_DM_SPI),)
-ifeq ($(filter $(CONFIG_DAVINCI_SPI) $(CONFIG_KIRKWOOD_SPI) $(CONFIG_MPC8XXX_SPI) \
- $(CONFIG_MXC_SPI) $(CONFIG_OMAP3_SPI) $(CONFIG_TI_QSPI),y),y)
+ifeq ($(filter $(CONFIG_ATMEL_SPI) $(CONFIG_DAVINCI_SPI) $(CONFIG_KIRKWOOD_SPI) \
+ $(CONFIG_MPC8XXX_SPI) $(CONFIG_MXC_SPI) $(CONFIG_OMAP3_SPI) \
+ $(CONFIG_TI_QSPI),y),y)
@echo "===================== WARNING ======================"
@echo "This board uses SPI driver from drivers/spi/ without"
@echo "enabling CONFIG_DM_SPI. Please enable CONFIG_DM_SPI"
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 7de209830e..1c2d8c0d15 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -6,6 +6,7 @@
# There are many options which enable SPI, so make this library available
ifdef CONFIG_DM_SPI
obj-y += spi-uclass.o
+obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o
obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o
obj-$(CONFIG_KIRKWOOD_SPI) += kirkwood_spi.o
obj-$(CONFIG_MPC8XXX_SPI) += mpc8xxx_spi.o
@@ -21,7 +22,6 @@ endif

obj-$(CONFIG_ALTERA_SPI) += altera_spi.o
obj-$(CONFIG_ATH79_SPI) += ath79_spi.o
-obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o
obj-$(CONFIG_BCM63XX_HSSPI) += bcm63xx_hsspi.o
obj-$(CONFIG_BCM63XX_SPI) += bcm63xx_spi.o
obj-$(CONFIG_BCMSTB_SPI) += bcmstb_spi.o
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index cf4de9ee1a..fad67137b9 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -14,210 +14,13 @@

#include <asm/arch/clk.h>
#include <asm/arch/hardware.h>
-#ifdef CONFIG_DM_SPI
#include <asm/arch/at91_spi.h>
-#endif
#ifdef CONFIG_DM_GPIO
#include <asm/gpio.h>
#endif

#include "atmel_spi.h"

-#ifndef CONFIG_DM_SPI
-
-static int spi_has_wdrbt(struct atmel_spi_slave *slave)
-{
- unsigned int ver;
-
- ver = spi_readl(slave, VERSION);
-
- return (ATMEL_SPI_VERSION_REV(ver) >= 0x210);
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct atmel_spi_slave *as;
- unsigned int scbr;
- u32 csrx;
- void *regs;
-
- if (!spi_cs_is_valid(bus, cs))
- return NULL;
-
- switch (bus) {
- case 0:
- regs = (void *)ATMEL_BASE_SPI0;
- break;
-#ifdef ATMEL_BASE_SPI1
- case 1:
- regs = (void *)ATMEL_BASE_SPI1;
- break;
-#endif
-#ifdef ATMEL_BASE_SPI2
- case 2:
- regs = (void *)ATMEL_BASE_SPI2;
- break;
-#endif
-#ifdef ATMEL_BASE_SPI3
- case 3:
- regs = (void *)ATMEL_BASE_SPI3;
- break;
-#endif
- default:
- return NULL;
- }
-
-
- scbr = (get_spi_clk_rate(bus) + max_hz - 1) / max_hz;
- if (scbr > ATMEL_SPI_CSRx_SCBR_MAX)
- /* Too low max SCK rate */
- return NULL;
- if (scbr < 1)
- scbr = 1;
-
- csrx = ATMEL_SPI_CSRx_SCBR(scbr);
- csrx |= ATMEL_SPI_CSRx_BITS(ATMEL_SPI_BITS_8);
- if (!(mode & SPI_CPHA))
- csrx |= ATMEL_SPI_CSRx_NCPHA;
- if (mode & SPI_CPOL)
- csrx |= ATMEL_SPI_CSRx_CPOL;
-
- as = spi_alloc_slave(struct atmel_spi_slave, bus, cs);
- if (!as)
- return NULL;
-
- as->regs = regs;
- as->mr = ATMEL_SPI_MR_MSTR | ATMEL_SPI_MR_MODFDIS
- | ATMEL_SPI_MR_PCS(~(1 << cs) & 0xf);
- if (spi_has_wdrbt(as))
- as->mr |= ATMEL_SPI_MR_WDRBT;
-
- spi_writel(as, CSR(cs), csrx);
-
- return &as->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- struct atmel_spi_slave *as = to_atmel_spi(slave);
-
- free(as);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
- struct atmel_spi_slave *as = to_atmel_spi(slave);
-
- /* Enable the SPI hardware */
- spi_writel(as, CR, ATMEL_SPI_CR_SPIEN);
-
- /*
- * Select the slave. This should set SCK to the correct
- * initial state, etc.
- */
- spi_writel(as, MR, as->mr);
-
- return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
- struct atmel_spi_slave *as = to_atmel_spi(slave);
-
- /* Disable the SPI hardware */
- spi_writel(as, CR, ATMEL_SPI_CR_SPIDIS);
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
- const void *dout, void *din, unsigned long flags)
-{
- struct atmel_spi_slave *as = to_atmel_spi(slave);
- unsigned int len_tx;
- unsigned int len_rx;
- unsigned int len;
- u32 status;
- const u8 *txp = dout;
- u8 *rxp = din;
- u8 value;
-
- if (bitlen == 0)
- /* Finish any previously submitted transfers */
- goto out;
-
- /*
- * TODO: The controller can do non-multiple-of-8 bit
- * transfers, but this driver currently doesn't support it.
- *
- * It's also not clear how such transfers are supposed to be
- * represented as a stream of bytes...this is a limitation of
- * the current SPI interface.
- */
- if (bitlen % 8) {
- /* Errors always terminate an ongoing transfer */
- flags |= SPI_XFER_END;
- goto out;
- }
-
- len = bitlen / 8;
-
- /*
- * The controller can do automatic CS control, but it is
- * somewhat quirky, and it doesn't really buy us much anyway
- * in the context of U-Boot.
- */
- if (flags & SPI_XFER_BEGIN) {
- spi_cs_activate(slave);
- /*
- * sometimes the RDR is not empty when we get here,
- * in theory that should not happen, but it DOES happen.
- * Read it here to be on the safe side.
- * That also clears the OVRES flag. Required if the
- * following loop exits due to OVRES!
- */
- spi_readl(as, RDR);
- }
-
- for (len_tx = 0, len_rx = 0; len_rx < len; ) {
- status = spi_readl(as, SR);
-
- if (status & ATMEL_SPI_SR_OVRES)
- return -1;
-
- if (len_tx < len && (status & ATMEL_SPI_SR_TDRE)) {
- if (txp)
- value = *txp++;
- else
- value = 0;
- spi_writel(as, TDR, value);
- len_tx++;
- }
- if (status & ATMEL_SPI_SR_RDRF) {
- value = spi_readl(as, RDR);
- if (rxp)
- *rxp++ = value;
- len_rx++;
- }
- }
-
-out:
- if (flags & SPI_XFER_END) {
- /*
- * Wait until the transfer is completely done before
- * we deactivate CS.
- */
- do {
- status = spi_readl(as, SR);
- } while (!(status & ATMEL_SPI_SR_TXEMPTY));
-
- spi_cs_deactivate(slave);
- }
-
- return 0;
-}
-
-#else
-
#define MAX_CS_COUNT 4

struct atmel_spi_platdata {
@@ -507,4 +310,3 @@ U_BOOT_DRIVER(atmel_spi) = {
.priv_auto_alloc_size = sizeof(struct atmel_spi_priv),
.probe = atmel_spi_probe,
};
-#endif
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 7f5863f904..3fc4db1dba 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -40,6 +40,7 @@ void *spi_do_alloc_slave(int offset, int size, unsigned int bus,
}

#if !defined(CONFIG_DM_SPI) && \
+ defined(CONFIG_ATMEL_SPI) || \
defined(CONFIG_DAVINCI_SPI) || \
defined(CONFIG_KIRKWOOD_SPI) || \
defined(CONFIG_MPC8XXX_SPI) || \
--
2.18.0.321.gffc6fa0e3