[U-Boot] [PATCH] drivers: spi: Remove atmel_dataflash_spi driver
Wenyou Yang
wenyou.yang at microchip.com
Wed Aug 9 05:23:40 UTC 2017
This driver is replaced by the SPI-flash-based AT45xxx DataFlash
driver, which supports the driver model and device tree, the
atmel_dataflash_spi driver will not be used any more.
Signed-off-by: Wenyou Yang <wenyou.yang at microchip.com>
---
drivers/spi/Makefile | 1 -
drivers/spi/atmel_dataflash_spi.c | 184 --------------------------------------
2 files changed, 185 deletions(-)
delete mode 100644 drivers/spi/atmel_dataflash_spi.c
diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
index 9f8b86de76..7b598fd988 100644
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -17,7 +17,6 @@ endif
obj-$(CONFIG_ALTERA_SPI) += altera_spi.o
obj-$(CONFIG_ATH79_SPI) += ath79_spi.o
-obj-$(CONFIG_ATMEL_DATAFLASH_SPI) += atmel_dataflash_spi.o
obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o
obj-$(CONFIG_CADENCE_QSPI) += cadence_qspi.o cadence_qspi_apb.o
obj-$(CONFIG_CF_SPI) += cf_spi.o
diff --git a/drivers/spi/atmel_dataflash_spi.c b/drivers/spi/atmel_dataflash_spi.c
deleted file mode 100644
index a2e9c00ea6..0000000000
--- a/drivers/spi/atmel_dataflash_spi.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * Driver for ATMEL DataFlash support
- * Author : Hamid Ikdoumi (Atmel)
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * This driver desperately needs rework:
- *
- * - use structure SoC access
- * - get rid of including asm/arch/at91_spi.h
- * - remove asm/arch/at91_spi.h
- * - get rid of all CONFIG_ATMEL_LEGACY defines and uses
- *
- * 02-Aug-2010 Reinhard Meyer <uboot at emk-elektronik.de>
- */
-
-#include <common.h>
-#ifndef CONFIG_ATMEL_LEGACY
-# define CONFIG_ATMEL_LEGACY
-#endif
-#include <spi.h>
-#include <malloc.h>
-
-#include <asm/io.h>
-
-#include <asm/arch/clk.h>
-#include <asm/arch/hardware.h>
-
-#include "atmel_spi.h"
-
-#include <asm/arch/gpio.h>
-#include <asm/arch/at91_pio.h>
-#include <asm/arch/at91_spi.h>
-
-#include <dataflash.h>
-
-#define AT91_SPI_PCS0_DATAFLASH_CARD 0xE /* Chip Select 0: NPCS0%1110 */
-#define AT91_SPI_PCS1_DATAFLASH_CARD 0xD /* Chip Select 1: NPCS1%1101 */
-#define AT91_SPI_PCS2_DATAFLASH_CARD 0xB /* Chip Select 2: NPCS2%1011 */
-#define AT91_SPI_PCS3_DATAFLASH_CARD 0x7 /* Chip Select 3: NPCS3%0111 */
-
-void AT91F_SpiInit(void)
-{
- /* Reset the SPI */
- writel(AT91_SPI_SWRST, ATMEL_BASE_SPI0 + AT91_SPI_CR);
-
- /* Configure SPI in Master Mode with No CS selected !!! */
- writel(AT91_SPI_MSTR | AT91_SPI_MODFDIS | AT91_SPI_PCS,
- ATMEL_BASE_SPI0 + AT91_SPI_MR);
-
- /* Configure CS0 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((get_mck_clk_rate() / AT91_SPI_CLK) << 8),
- ATMEL_BASE_SPI0 + AT91_SPI_CSR(0));
-
-#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS1
- /* Configure CS1 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((get_mck_clk_rate() / AT91_SPI_CLK) << 8),
- ATMEL_BASE_SPI0 + AT91_SPI_CSR(1));
-#endif
-#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS2
- /* Configure CS2 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((get_mck_clk_rate() / AT91_SPI_CLK) << 8),
- ATMEL_BASE_SPI0 + AT91_SPI_CSR(2));
-#endif
-#ifdef CONFIG_SYS_DATAFLASH_LOGIC_ADDR_CS3
- /* Configure CS3 */
- writel(AT91_SPI_NCPHA |
- (AT91_SPI_DLYBS & DATAFLASH_TCSS) |
- (AT91_SPI_DLYBCT & DATAFLASH_TCHS) |
- ((get_mck_clk_rate() / AT91_SPI_CLK) << 8),
- ATMEL_BASE_SPI0 + AT91_SPI_CSR(3));
-#endif
-
- /* SPI_Enable */
- writel(AT91_SPI_SPIEN, ATMEL_BASE_SPI0 + AT91_SPI_CR);
-
- while (!(readl(ATMEL_BASE_SPI0 + AT91_SPI_SR) & AT91_SPI_SPIENS))
- ;
-
- /*
- * Add tempo to get SPI in a safe state.
- * Should not be needed for new silicon (Rev B)
- */
- udelay(500000);
- readl(ATMEL_BASE_SPI0 + AT91_SPI_SR);
- readl(ATMEL_BASE_SPI0 + AT91_SPI_RDR);
-
-}
-
-void AT91F_SpiEnable(int cs)
-{
- unsigned long mode;
-
- mode = readl(ATMEL_BASE_SPI0 + AT91_SPI_MR);
- mode &= ~AT91_SPI_PCS;
-
- switch (cs) {
- case 0:
- mode |= AT91_SPI_PCS0_DATAFLASH_CARD << 16;
- break;
- case 1:
- mode |= AT91_SPI_PCS1_DATAFLASH_CARD << 16;
- break;
- case 2:
- mode |= AT91_SPI_PCS2_DATAFLASH_CARD << 16;
- break;
- case 3:
- mode |= AT91_SPI_PCS3_DATAFLASH_CARD << 16;
- break;
- }
-
- writel(mode, ATMEL_BASE_SPI0 + AT91_SPI_MR);
-
- /* SPI_Enable */
- writel(AT91_SPI_SPIEN, ATMEL_BASE_SPI0 + AT91_SPI_CR);
-}
-
-unsigned int AT91F_SpiWrite1(AT91PS_DataflashDesc pDesc);
-
-unsigned int AT91F_SpiWrite(AT91PS_DataflashDesc pDesc)
-{
- unsigned int timeout;
- unsigned int timebase;
-
- pDesc->state = BUSY;
-
- writel(AT91_SPI_TXTDIS + AT91_SPI_RXTDIS,
- ATMEL_BASE_SPI0 + AT91_SPI_PTCR);
-
- /* Initialize the Transmit and Receive Pointer */
- writel((unsigned int)pDesc->rx_cmd_pt,
- ATMEL_BASE_SPI0 + AT91_SPI_RPR);
- writel((unsigned int)pDesc->tx_cmd_pt,
- ATMEL_BASE_SPI0 + AT91_SPI_TPR);
-
- /* Intialize the Transmit and Receive Counters */
- writel(pDesc->rx_cmd_size, ATMEL_BASE_SPI0 + AT91_SPI_RCR);
- writel(pDesc->tx_cmd_size, ATMEL_BASE_SPI0 + AT91_SPI_TCR);
-
- if (pDesc->tx_data_size != 0) {
- /* Initialize the Next Transmit and Next Receive Pointer */
- writel((unsigned int)pDesc->rx_data_pt,
- ATMEL_BASE_SPI0 + AT91_SPI_RNPR);
- writel((unsigned int)pDesc->tx_data_pt,
- ATMEL_BASE_SPI0 + AT91_SPI_TNPR);
-
- /* Intialize the Next Transmit and Next Receive Counters */
- writel(pDesc->rx_data_size,
- ATMEL_BASE_SPI0 + AT91_SPI_RNCR);
- writel(pDesc->tx_data_size,
- ATMEL_BASE_SPI0 + AT91_SPI_TNCR);
- }
-
- /* arm simple, non interrupt dependent timer */
- timebase = get_timer(0);
- timeout = 0;
-
- writel(AT91_SPI_TXTEN + AT91_SPI_RXTEN,
- ATMEL_BASE_SPI0 + AT91_SPI_PTCR);
- while (!(readl(ATMEL_BASE_SPI0 + AT91_SPI_SR) & AT91_SPI_RXBUFF) &&
- ((timeout = get_timer(timebase)) < CONFIG_SYS_SPI_WRITE_TOUT))
- ;
- writel(AT91_SPI_TXTDIS + AT91_SPI_RXTDIS,
- ATMEL_BASE_SPI0 + AT91_SPI_PTCR);
- pDesc->state = IDLE;
-
- if (timeout >= CONFIG_SYS_SPI_WRITE_TOUT) {
- printf("Error Timeout\n\r");
- return DATAFLASH_ERROR;
- }
-
- return DATAFLASH_OK;
-}
--
2.13.0
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