[PATCH v5 01/44] mtd: Drop unused kb9202_nand driver

Simon Glass
2023-02-22T16:37:47Z

This is not used since time out of mind.

Drop the driver and Kconfig option.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Michael Trimarchi <michael@amarulasolutions.com>
---

(no changes since v1)

drivers/mtd/nand/raw/Makefile | 1 -
drivers/mtd/nand/raw/kb9202_nand.c | 134 -----------------------------
2 files changed, 135 deletions(-)
delete mode 100644 drivers/mtd/nand/raw/kb9202_nand.c

diff --git a/drivers/mtd/nand/raw/Makefile b/drivers/mtd/nand/raw/Makefile
index 666323e2219..add2b4cf655 100644
--- a/drivers/mtd/nand/raw/Makefile
+++ b/drivers/mtd/nand/raw/Makefile
@@ -56,7 +56,6 @@ obj-$(CONFIG_NAND_DENALI) += denali.o
obj-$(CONFIG_NAND_DENALI_DT) += denali_dt.o
obj-$(CONFIG_NAND_FSL_ELBC) += fsl_elbc_nand.o
obj-$(CONFIG_NAND_FSL_IFC) += fsl_ifc_nand.o
-obj-$(CONFIG_NAND_KB9202) += kb9202_nand.o
obj-$(CONFIG_NAND_KIRKWOOD) += kirkwood_nand.o
obj-$(CONFIG_NAND_KMETER1) += kmeter1_nand.o
obj-$(CONFIG_NAND_LPC32XX_MLC) += lpc32xx_nand_mlc.o
diff --git a/drivers/mtd/nand/raw/kb9202_nand.c b/drivers/mtd/nand/raw/kb9202_nand.c
deleted file mode 100644
index 9d26532c780..00000000000
--- a/drivers/mtd/nand/raw/kb9202_nand.c
+++ /dev/null
@@ -1,134 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * (C) Copyright 2006
- * KwikByte <kb9200_dev@kwikbyte.com>
- *
- * (C) Copyright 2009
- * Matthias Kaehlcke <matthias@kaehlcke.net>
- */
-
-#include <common.h>
-#include <linux/mtd/rawnand.h>
-#include <asm/io.h>
-#include <asm/arch/AT91RM9200.h>
-#include <asm/arch/hardware.h>
-
-#include <nand.h>
-
-/*
- * hardware specific access to control-lines
- */
-
-#define MASK_ALE (1 << 22) /* our ALE is A22 */
-#define MASK_CLE (1 << 21) /* our CLE is A21 */
-
-#define KB9202_NAND_NCE (1 << 28) /* EN* on D28 */
-#define KB9202_NAND_BUSY (1 << 29) /* RB* on D29 */
-
-#define KB9202_SMC2_NWS (1 << 2)
-#define KB9202_SMC2_TDF (1 << 8)
-#define KB9202_SMC2_RWSETUP (1 << 24)
-#define KB9202_SMC2_RWHOLD (1 << 29)
-
-/*
- * Board-specific function to access device control signals
- */
-static void kb9202_nand_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl)
-{
- struct nand_chip *this = mtd_to_nand(mtd);
-
- if (ctrl & NAND_CTRL_CHANGE) {
- ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
-
- /* clear ALE and CLE bits */
- IO_ADDR_W &= ~(MASK_ALE | MASK_CLE);
-
- if (ctrl & NAND_CLE)
- IO_ADDR_W |= MASK_CLE;
-
- if (ctrl & NAND_ALE)
- IO_ADDR_W |= MASK_ALE;
-
- this->IO_ADDR_W = (void *) IO_ADDR_W;
-
- if (ctrl & NAND_NCE)
- writel(KB9202_NAND_NCE, AT91C_PIOC_CODR);
- else
- writel(KB9202_NAND_NCE, AT91C_PIOC_SODR);
- }
-
- if (cmd != NAND_CMD_NONE)
- writeb(cmd, this->IO_ADDR_W);
-}
-
-
-/*
- * Board-specific function to access the device ready signal.
- */
-static int kb9202_nand_ready(struct mtd_info *mtd)
-{
- return readl(AT91C_PIOC_PDSR) & KB9202_NAND_BUSY;
-}
-
-
-/*
- * Board-specific NAND init. Copied from include/linux/mtd/nand.h for reference.
- *
- * struct nand_chip - NAND Private Flash Chip Data
- * @IO_ADDR_R: [BOARDSPECIFIC] address to read the 8 I/O lines of the flash device
- * @IO_ADDR_W: [BOARDSPECIFIC] address to write the 8 I/O lines of the flash device
- * @hwcontrol: [BOARDSPECIFIC] hardwarespecific function for accesing control-lines
- * @dev_ready: [BOARDSPECIFIC] hardwarespecific function for accesing device ready/busy line
- * If set to NULL no access to ready/busy is available and the ready/busy information
- * is read from the chip status register
- * @enable_hwecc: [BOARDSPECIFIC] function to enable (reset) hardware ecc generator. Must only
- * be provided if a hardware ECC is available
- * @eccmode: [BOARDSPECIFIC] mode of ecc, see defines
- * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transfering data from array to read regs (tR)
- * @options: [BOARDSPECIFIC] various chip options. They can partly be set to inform nand_scan about
- * special functionality. See the defines for further explanation
-*/
-/*
- * This routine initializes controller and GPIOs.
- */
-int board_nand_init(struct nand_chip *nand)
-{
- unsigned int value;
-
- nand->ecc.mode = NAND_ECC_SOFT;
- nand->cmd_ctrl = kb9202_nand_hwcontrol;
- nand->dev_ready = kb9202_nand_ready;
-
- /* in case running outside of bootloader */
- writel(1 << AT91C_ID_PIOC, AT91C_PMC_PCER);
-
- /* setup nand flash access (allow ample margin) */
- /* 4 wait states, 1 setup, 1 hold, 1 float for 8-bit device */
- writel(AT91C_SMC2_WSEN | KB9202_SMC2_NWS | KB9202_SMC2_TDF |
- AT91C_SMC2_DBW_8 | KB9202_SMC2_RWSETUP | KB9202_SMC2_RWHOLD,
- AT91C_SMC_CSR3);
-
- /* enable internal NAND controller */
- value = readl(AT91C_EBI_CSA);
- value |= AT91C_EBI_CS3A_SMC_SmartMedia;
- writel(value, AT91C_EBI_CSA);
-
- /* enable SMOE/SMWE */
- writel(AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE, AT91C_PIOC_ASR);
- writel(AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE, AT91C_PIOC_PDR);
- writel(AT91C_PC1_BFRDY_SMOE | AT91C_PC3_BFBAA_SMWE, AT91C_PIOC_OER);
-
- /* set NCE to high */
- writel(KB9202_NAND_NCE, AT91C_PIOC_SODR);
-
- /* disable output on pin connected to the busy line of the NAND */
- writel(KB9202_NAND_BUSY, AT91C_PIOC_ODR);
-
- /* enable the PIO to control NCE and BUSY */
- writel(KB9202_NAND_NCE | KB9202_NAND_BUSY, AT91C_PIOC_PER);
-
- /* enable output for NCE */
- writel(KB9202_NAND_NCE, AT91C_PIOC_OER);
-
- return (0);
-}
--
2.39.2.637.g21b0678d19-goog