[PATCH 3/5] powerpc/boot: Remove support for Marvell mv64x60 i2c controller
From: Mark Greer
Date: Thu Apr 05 2018 - 21:17:47 EST
There are no longer any platforms that use Marvell's mv64x60's i2c
controller so remove its driver.
Signed-off-by: Mark Greer <mgreer@xxxxxxxxxxxxxxx>
---
arch/powerpc/boot/Makefile | 2 +-
arch/powerpc/boot/mv64x60_i2c.c | 204 ----------------------------------------
2 files changed, 1 insertion(+), 205 deletions(-)
delete mode 100644 arch/powerpc/boot/mv64x60_i2c.c
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 58f2dbfba275..bf6a46055ba7 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -120,7 +120,7 @@ src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c
src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c
src-wlib-$(CONFIG_PPC_8xx) += mpc8xx.c planetcore.c fsl-soc.c
src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c
-src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c fsl-soc.c
+src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c ugecon.c fsl-soc.c
src-wlib-$(CONFIG_XILINX_VIRTEX) += uartlite.c
src-wlib-$(CONFIG_CPM) += cpm-serial.c
diff --git a/arch/powerpc/boot/mv64x60_i2c.c b/arch/powerpc/boot/mv64x60_i2c.c
deleted file mode 100644
index 52a3212b6638..000000000000
--- a/arch/powerpc/boot/mv64x60_i2c.c
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * Bootloader version of the i2c driver for the MV64x60.
- *
- * Author: Dale Farnsworth <dfarnsworth@xxxxxxxxxx>
- * Maintained by: Mark A. Greer <mgreer@xxxxxxxxxx>
- *
- * 2003, 2007 (c) MontaVista, Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program is
- * licensed "as is" without any warranty of any kind, whether express or
- * implied.
- */
-
-#include <stdarg.h>
-#include <stddef.h>
-#include "types.h"
-#include "elf.h"
-#include "page.h"
-#include "string.h"
-#include "stdio.h"
-#include "io.h"
-#include "ops.h"
-#include "mv64x60.h"
-
-/* Register defines */
-#define MV64x60_I2C_REG_SLAVE_ADDR 0x00
-#define MV64x60_I2C_REG_DATA 0x04
-#define MV64x60_I2C_REG_CONTROL 0x08
-#define MV64x60_I2C_REG_STATUS 0x0c
-#define MV64x60_I2C_REG_BAUD 0x0c
-#define MV64x60_I2C_REG_EXT_SLAVE_ADDR 0x10
-#define MV64x60_I2C_REG_SOFT_RESET 0x1c
-
-#define MV64x60_I2C_CONTROL_ACK 0x04
-#define MV64x60_I2C_CONTROL_IFLG 0x08
-#define MV64x60_I2C_CONTROL_STOP 0x10
-#define MV64x60_I2C_CONTROL_START 0x20
-#define MV64x60_I2C_CONTROL_TWSIEN 0x40
-#define MV64x60_I2C_CONTROL_INTEN 0x80
-
-#define MV64x60_I2C_STATUS_BUS_ERR 0x00
-#define MV64x60_I2C_STATUS_MAST_START 0x08
-#define MV64x60_I2C_STATUS_MAST_REPEAT_START 0x10
-#define MV64x60_I2C_STATUS_MAST_WR_ADDR_ACK 0x18
-#define MV64x60_I2C_STATUS_MAST_WR_ADDR_NO_ACK 0x20
-#define MV64x60_I2C_STATUS_MAST_WR_ACK 0x28
-#define MV64x60_I2C_STATUS_MAST_WR_NO_ACK 0x30
-#define MV64x60_I2C_STATUS_MAST_LOST_ARB 0x38
-#define MV64x60_I2C_STATUS_MAST_RD_ADDR_ACK 0x40
-#define MV64x60_I2C_STATUS_MAST_RD_ADDR_NO_ACK 0x48
-#define MV64x60_I2C_STATUS_MAST_RD_DATA_ACK 0x50
-#define MV64x60_I2C_STATUS_MAST_RD_DATA_NO_ACK 0x58
-#define MV64x60_I2C_STATUS_MAST_WR_ADDR_2_ACK 0xd0
-#define MV64x60_I2C_STATUS_MAST_WR_ADDR_2_NO_ACK 0xd8
-#define MV64x60_I2C_STATUS_MAST_RD_ADDR_2_ACK 0xe0
-#define MV64x60_I2C_STATUS_MAST_RD_ADDR_2_NO_ACK 0xe8
-#define MV64x60_I2C_STATUS_NO_STATUS 0xf8
-
-static u8 *ctlr_base;
-
-static int mv64x60_i2c_wait_for_status(int wanted)
-{
- int i;
- int status;
-
- for (i=0; i<1000; i++) {
- udelay(10);
- status = in_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_STATUS))
- & 0xff;
- if (status == wanted)
- return status;
- }
- return -status;
-}
-
-static int mv64x60_i2c_control(int control, int status)
-{
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff);
- return mv64x60_i2c_wait_for_status(status);
-}
-
-static int mv64x60_i2c_read_byte(int control, int status)
-{
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff);
- if (mv64x60_i2c_wait_for_status(status) < 0)
- return -1;
- return in_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_DATA)) & 0xff;
-}
-
-static int mv64x60_i2c_write_byte(int data, int control, int status)
-{
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_DATA), data & 0xff);
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_CONTROL), control & 0xff);
- return mv64x60_i2c_wait_for_status(status);
-}
-
-int mv64x60_i2c_read(u32 devaddr, u8 *buf, u32 offset, u32 offset_size,
- u32 count)
-{
- int i;
- int data;
- int control;
- int status;
-
- if (ctlr_base == NULL)
- return -1;
-
- /* send reset */
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_SOFT_RESET), 0);
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_SLAVE_ADDR), 0);
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_EXT_SLAVE_ADDR), 0);
- out_le32((u32 *)(ctlr_base + MV64x60_I2C_REG_BAUD), (4 << 3) | 0x4);
-
- if (mv64x60_i2c_control(MV64x60_I2C_CONTROL_TWSIEN,
- MV64x60_I2C_STATUS_NO_STATUS) < 0)
- return -1;
-
- /* send start */
- control = MV64x60_I2C_CONTROL_START | MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_START;
- if (mv64x60_i2c_control(control, status) < 0)
- return -1;
-
- /* select device for writing */
- data = devaddr & ~0x1;
- control = MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_WR_ADDR_ACK;
- if (mv64x60_i2c_write_byte(data, control, status) < 0)
- return -1;
-
- /* send offset of data */
- control = MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_WR_ACK;
- if (offset_size > 1) {
- if (mv64x60_i2c_write_byte(offset >> 8, control, status) < 0)
- return -1;
- }
- if (mv64x60_i2c_write_byte(offset, control, status) < 0)
- return -1;
-
- /* resend start */
- control = MV64x60_I2C_CONTROL_START | MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_REPEAT_START;
- if (mv64x60_i2c_control(control, status) < 0)
- return -1;
-
- /* select device for reading */
- data = devaddr | 0x1;
- control = MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_RD_ADDR_ACK;
- if (mv64x60_i2c_write_byte(data, control, status) < 0)
- return -1;
-
- /* read all but last byte of data */
- control = MV64x60_I2C_CONTROL_ACK | MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_RD_DATA_ACK;
-
- for (i=1; i<count; i++) {
- data = mv64x60_i2c_read_byte(control, status);
- if (data < 0) {
- printf("errors on iteration %d\n", i);
- return -1;
- }
- *buf++ = data;
- }
-
- /* read last byte of data */
- control = MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_MAST_RD_DATA_NO_ACK;
- data = mv64x60_i2c_read_byte(control, status);
- if (data < 0)
- return -1;
- *buf++ = data;
-
- /* send stop */
- control = MV64x60_I2C_CONTROL_STOP | MV64x60_I2C_CONTROL_TWSIEN;
- status = MV64x60_I2C_STATUS_NO_STATUS;
- if (mv64x60_i2c_control(control, status) < 0)
- return -1;
-
- return count;
-}
-
-int mv64x60_i2c_open(void)
-{
- u32 v;
- void *devp;
-
- devp = find_node_by_compatible(NULL, "marvell,mv64360-i2c");
- if (devp == NULL)
- goto err_out;
- if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
- goto err_out;
-
- ctlr_base = (u8 *)v;
- return 0;
-
-err_out:
- return -1;
-}
-
-void mv64x60_i2c_close(void)
-{
- ctlr_base = NULL;
-}
--
2.16.2