[U-Boot] [PATCH 12/14] spi: atmel: Drop non-dm code

Jagan Teki
2018-03-14T13:16:42Z

All board configs are now enabled DM_SPI for SPL and
U-Boot proper, so now its time to drop non-dm code.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
drivers/spi/atmel_spi.c | 201 -------------------------------------------
drivers/spi/atmel_spi.h | 16 ----
include/configs/ma5d4evk.h | 1 -
include/configs/vinco.h | 1 -
scripts/config_whitelist.txt | 1 -
5 files changed, 220 deletions(-)

diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 3cdfd366ab..122c6d107d 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -26,206 +26,6 @@

DECLARE_GLOBAL_DATA_PTR;

-#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);
-}
-
-void spi_init()
-{
-
-}
-
-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 {
@@ -515,4 +315,3 @@ U_BOOT_DRIVER(atmel_spi) = {
.priv_auto_alloc_size = sizeof(struct atmel_spi_priv),
.probe = atmel_spi_probe,
};
-#endif
diff --git a/drivers/spi/atmel_spi.h b/drivers/spi/atmel_spi.h
index 76b8556c98..685eeed99e 100644
--- a/drivers/spi/atmel_spi.h
+++ b/drivers/spi/atmel_spi.h
@@ -79,22 +79,6 @@
#define ATMEL_SPI_BITS_16 8

struct atmel_spi_slave {
- struct spi_slave slave;
void *regs;
u32 mr;
};
-
-static inline struct atmel_spi_slave *to_atmel_spi(struct spi_slave *slave)
-{
- return container_of(slave, struct atmel_spi_slave, slave);
-}
-
-/* Register access macros */
-#define spi_readl(as, reg) \
- readl(as->regs + ATMEL_SPI_##reg)
-#define spi_writel(as, reg, value) \
- writel(value, as->regs + ATMEL_SPI_##reg)
-
-#if !defined(CONFIG_SYS_SPI_WRITE_TOUT)
-#define CONFIG_SYS_SPI_WRITE_TOUT (5 * CONFIG_SYS_HZ)
-#endif
diff --git a/include/configs/ma5d4evk.h b/include/configs/ma5d4evk.h
index ed95e580c0..4cba7580a2 100644
--- a/include/configs/ma5d4evk.h
+++ b/include/configs/ma5d4evk.h
@@ -87,7 +87,6 @@
*/
#ifdef CONFIG_CMD_SF
#define CONFIG_ATMEL_SPI
-#define CONFIG_ATMEL_SPI0
#define CONFIG_SPI_FLASH_ATMEL
#define CONFIG_SF_DEFAULT_BUS 0
#define CONFIG_SF_DEFAULT_CS 0
diff --git a/include/configs/vinco.h b/include/configs/vinco.h
index ca3958986b..3ae7e9e75b 100644
--- a/include/configs/vinco.h
+++ b/include/configs/vinco.h
@@ -39,7 +39,6 @@

#ifdef CONFIG_CMD_SF
#define CONFIG_ATMEL_SPI
-#define CONFIG_ATMEL_SPI0
#define CONFIG_SPI_FLASH_STMICRO
#define CONFIG_SF_DEFAULT_BUS 0
#define CONFIG_SF_DEFAULT_CS 0
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 3606585c05..a5f8e3591f 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -103,7 +103,6 @@ CONFIG_ATMEL_LEGACY
CONFIG_ATMEL_MCI_8BIT
CONFIG_ATMEL_NAND_HWECC
CONFIG_ATMEL_NAND_HW_PMECC
-CONFIG_ATMEL_SPI0
CONFIG_AT_TRANS
CONFIG_AUTO_ZRELADDR
CONFIG_BACKSIDE_L2_CACHE
--
2.14.3