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realtek: drop rtl838x spi-nor driver from 5.10

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To backport the upstreamed driver (spi-realtek-rtl) from 5.12, drop the
old driver from realtek target.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
This commit is contained in:
INAGAKI Hiroshi 2021-06-24 20:22:51 +09:00 committed by Adrian Schmutzler
parent 95170b4350
commit 1651bd9bc6
4 changed files with 0 additions and 738 deletions
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1
target/linux/realtek/config-5.10
View File

@ -171,7 +171,6 @@ CONFIG_SFP=y
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
CONFIG_SPI_MEM=y
CONFIG_SPI_RTL838X=y
CONFIG_SRCU=y
CONFIG_SWAP_IO_SPACE=y
CONFIG_SWPHY=y

603
target/linux/realtek/files-5.10/drivers/mtd/spi-nor/rtl838x-nor.c
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@ -1,603 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/device.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/spi-nor.h>
#include "rtl838x-spi.h"
#include <asm/mach-rtl838x/mach-rtl83xx.h>
extern struct rtl83xx_soc_info soc_info;
struct rtl838x_nor {
struct spi_nor nor;
struct device *dev;
volatile void __iomem *base;
bool fourByteMode;
u32 chipSize;
uint32_t flags;
uint32_t io_status;
};
static uint32_t spi_prep(struct rtl838x_nor *rtl838x_nor)
{
/* Needed because of MMU constraints */
SPI_WAIT_READY;
spi_w32w(SPI_CS_INIT, SFCSR); //deactivate CS0, CS1
spi_w32w(0, SFCSR); //activate CS0,CS1
spi_w32w(SPI_CS_INIT, SFCSR); //deactivate CS0, CS1
return (CS0 & rtl838x_nor->flags) ? (SPI_eCS0 & SPI_LEN_INIT)
: ((SPI_eCS1 & SPI_LEN_INIT) | SFCSR_CHIP_SEL);
}
static uint32_t rtl838x_nor_get_SR(struct rtl838x_nor *rtl838x_nor)
{
uint32_t sfcsr, sfdr;
sfcsr = spi_prep(rtl838x_nor);
sfdr = (SPINOR_OP_RDSR)<<24;
pr_debug("%s: rdid,sfcsr_val = %.8x,SFDR = %.8x\n", __func__, sfcsr, sfdr);
pr_debug("rdid,sfcsr = %.8x\n", sfcsr | SPI_LEN4);
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
spi_w32_mask(0, SPI_LEN4, SFCSR);
SPI_WAIT_READY;
return spi_r32(SFDR);
}
static void spi_write_disable(struct rtl838x_nor *rtl838x_nor)
{
uint32_t sfcsr, sfdr;
sfcsr = spi_prep(rtl838x_nor);
sfdr = (SPINOR_OP_WRDI) << 24;
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
pr_debug("%s: sfcsr_val = %.8x,SFDR = %.8x", __func__, sfcsr, sfdr);
spi_prep(rtl838x_nor);
}
static void spi_write_enable(struct rtl838x_nor *rtl838x_nor)
{
uint32_t sfcsr, sfdr;
sfcsr = spi_prep(rtl838x_nor);
sfdr = (SPINOR_OP_WREN) << 24;
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
pr_debug("%s: sfcsr_val = %.8x,SFDR = %.8x", __func__, sfcsr, sfdr);
spi_prep(rtl838x_nor);
}
static void spi_4b_set(struct rtl838x_nor *rtl838x_nor, bool enable)
{
uint32_t sfcsr, sfdr;
sfcsr = spi_prep(rtl838x_nor);
if (enable)
sfdr = (SPINOR_OP_EN4B) << 24;
else
sfdr = (SPINOR_OP_EX4B) << 24;
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
pr_debug("%s: sfcsr_val = %.8x,SFDR = %.8x", __func__, sfcsr, sfdr);
spi_prep(rtl838x_nor);
}
static int rtl838x_get_addr_mode(struct rtl838x_nor *rtl838x_nor)
{
int res = 3;
u32 reg;
sw_w32(0x3, RTL838X_INT_RW_CTRL);
if (!sw_r32(RTL838X_EXT_VERSION)) {
if (sw_r32(RTL838X_STRAP_DBG) & (1 << 29))
res = 4;
} else {
reg = sw_r32(RTL838X_PLL_CML_CTRL);
if ((reg & (1 << 30)) && (reg & (1 << 31)))
res = 4;
if ((!(reg & (1 << 30)))
&& sw_r32(RTL838X_STRAP_DBG) & (1 << 29))
res = 4;
}
sw_w32(0x0, RTL838X_INT_RW_CTRL);
return res;
}
static int rtl8390_get_addr_mode(struct rtl838x_nor *rtl838x_nor)
{
if (spi_r32(RTL8390_SOC_SPI_MMIO_CONF) & (1 << 9))
return 4;
return 3;
}
ssize_t rtl838x_do_read(struct rtl838x_nor *rtl838x_nor, loff_t from,
size_t length, u_char *buffer, uint8_t command)
{
uint32_t sfcsr, sfdr;
uint32_t len = length;
sfcsr = spi_prep(rtl838x_nor);
sfdr = command << 24;
/* Perform SPINOR_OP_READ: 1 byte command & 3 byte addr*/
sfcsr |= SPI_LEN4;
sfdr |= from;
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
/* Read Data, 4 bytes at a time */
while (length >= 4) {
SPI_WAIT_READY;
*((uint32_t *) buffer) = spi_r32(SFDR);
buffer += 4;
length -= 4;
}
/* The rest needs to be read 1 byte a time */
sfcsr &= SPI_LEN_INIT|SPI_LEN1;
SPI_WAIT_READY;
spi_w32w(sfcsr, SFCSR);
while (length > 0) {
SPI_WAIT_READY;
*(buffer) = spi_r32(SFDR) >> 24;
buffer++;
length--;
}
return len;
}
/*
* Do fast read in 3 or 4 Byte addressing mode
*/
static ssize_t rtl838x_do_4bf_read(struct rtl838x_nor *rtl838x_nor, loff_t from,
size_t length, u_char *buffer, uint8_t command)
{
int sfcsr_addr_len = rtl838x_nor->fourByteMode ? 0x3 : 0x2;
int sfdr_addr_shift = rtl838x_nor->fourByteMode ? 0 : 8;
uint32_t sfcsr;
uint32_t len = length;
pr_debug("Fast read from %llx, len %x, shift %d\n",
from, sfcsr_addr_len, sfdr_addr_shift);
sfcsr = spi_prep(rtl838x_nor);
/* Send read command */
spi_w32w(sfcsr | SPI_LEN1, SFCSR);
spi_w32w(command << 24, SFDR);
/* Send address */
spi_w32w(sfcsr | (sfcsr_addr_len << 28), SFCSR);
spi_w32w(from << sfdr_addr_shift, SFDR);
/* Dummy cycles */
spi_w32w(sfcsr | SPI_LEN1, SFCSR);
spi_w32w(0, SFDR);
/* Start reading */
spi_w32w(sfcsr | SPI_LEN4, SFCSR);
/* Read Data, 4 bytes at a time */
while (length >= 4) {
SPI_WAIT_READY;
*((uint32_t *) buffer) = spi_r32(SFDR);
buffer += 4;
length -= 4;
}
/* The rest needs to be read 1 byte a time */
sfcsr &= SPI_LEN_INIT|SPI_LEN1;
SPI_WAIT_READY;
spi_w32w(sfcsr, SFCSR);
while (length > 0) {
SPI_WAIT_READY;
*(buffer) = spi_r32(SFDR) >> 24;
buffer++;
length--;
}
return len;
}
/*
* Do write (Page Programming) in 3 or 4 Byte addressing mode
*/
static ssize_t rtl838x_do_4b_write(struct rtl838x_nor *rtl838x_nor, loff_t to,
size_t length, const u_char *buffer,
uint8_t command)
{
int sfcsr_addr_len = rtl838x_nor->fourByteMode ? 0x3 : 0x2;
int sfdr_addr_shift = rtl838x_nor->fourByteMode ? 0 : 8;
uint32_t sfcsr;
uint32_t len = length;
pr_debug("Write to %llx, len %x, shift %d\n",
to, sfcsr_addr_len, sfdr_addr_shift);
sfcsr = spi_prep(rtl838x_nor);
/* Send write command, command IO-width is 1 (bit 25/26) */
spi_w32w(sfcsr | SPI_LEN1 | (0 << 25), SFCSR);
spi_w32w(command << 24, SFDR);
/* Send address */
spi_w32w(sfcsr | (sfcsr_addr_len << 28) | (0 << 25), SFCSR);
spi_w32w(to << sfdr_addr_shift, SFDR);
/* Write Data, 1 byte at a time, if we are not 4-byte aligned */
if (((long)buffer) % 4) {
spi_w32w(sfcsr | SPI_LEN1, SFCSR);
while (length > 0 && (((long)buffer) % 4)) {
SPI_WAIT_READY;
spi_w32(*(buffer) << 24, SFDR);
buffer += 1;
length -= 1;
}
}
/* Now we can write 4 bytes at a time */
SPI_WAIT_READY;
spi_w32w(sfcsr | SPI_LEN4, SFCSR);
while (length >= 4) {
SPI_WAIT_READY;
spi_w32(*((uint32_t *)buffer), SFDR);
buffer += 4;
length -= 4;
}
/* Final bytes might need to be written 1 byte at a time, again */
SPI_WAIT_READY;
spi_w32w(sfcsr | SPI_LEN1, SFCSR);
while (length > 0) {
SPI_WAIT_READY;
spi_w32(*(buffer) << 24, SFDR);
buffer++;
length--;
}
return len;
}
static ssize_t rtl838x_nor_write(struct spi_nor *nor, loff_t to, size_t len,
const u_char *buffer)
{
int ret = 0;
uint32_t offset = 0;
struct rtl838x_nor *rtl838x_nor = nor->priv;
size_t l = len;
uint8_t cmd = SPINOR_OP_PP;
/* Do write in 4-byte mode on large Macronix chips */
if (rtl838x_nor->fourByteMode) {
cmd = SPINOR_OP_PP_4B;
spi_4b_set(rtl838x_nor, true);
}
pr_debug("In %s %8x to: %llx\n", __func__,
(unsigned int) rtl838x_nor, to);
while (l >= SPI_MAX_TRANSFER_SIZE) {
while
(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WIP);
do {
spi_write_enable(rtl838x_nor);
} while (!(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WEL));
ret = rtl838x_do_4b_write(rtl838x_nor, to + offset,
SPI_MAX_TRANSFER_SIZE, buffer+offset, cmd);
l -= SPI_MAX_TRANSFER_SIZE;
offset += SPI_MAX_TRANSFER_SIZE;
}
if (l > 0) {
while
(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WIP);
do {
spi_write_enable(rtl838x_nor);
} while (!(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WEL));
ret = rtl838x_do_4b_write(rtl838x_nor, to+offset,
len, buffer+offset, cmd);
}
return len;
}
static ssize_t rtl838x_nor_read(struct spi_nor *nor, loff_t from,
size_t length, u_char *buffer)
{
uint32_t offset = 0;
uint8_t cmd = SPINOR_OP_READ_FAST;
size_t l = length;
struct rtl838x_nor *rtl838x_nor = nor->priv;
/* Do fast read in 3, or 4-byte mode on large Macronix chips */
if (rtl838x_nor->fourByteMode) {
cmd = SPINOR_OP_READ_FAST_4B;
spi_4b_set(rtl838x_nor, true);
}
/* TODO: do timeout and return error */
pr_debug("Waiting for pending writes\n");
while
(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WIP);
do {
spi_write_enable(rtl838x_nor);
} while (!(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WEL));
pr_debug("cmd is %d\n", cmd);
pr_debug("%s: addr %.8llx to addr %.8x, cmd %.8x, size %d\n", __func__,
from, (u32)buffer, (u32)cmd, length);
while (l >= SPI_MAX_TRANSFER_SIZE) {
rtl838x_do_4bf_read(rtl838x_nor, from + offset,
SPI_MAX_TRANSFER_SIZE, buffer+offset, cmd);
l -= SPI_MAX_TRANSFER_SIZE;
offset += SPI_MAX_TRANSFER_SIZE;
}
if (l > 0)
rtl838x_do_4bf_read(rtl838x_nor, from + offset, l, buffer+offset, cmd);
return length;
}
static int rtl838x_erase(struct spi_nor *nor, loff_t offs)
{
struct rtl838x_nor *rtl838x_nor = nor->priv;
int sfcsr_addr_len = rtl838x_nor->fourByteMode ? 0x3 : 0x2;
int sfdr_addr_shift = rtl838x_nor->fourByteMode ? 0 : 8;
uint32_t sfcsr;
uint8_t cmd = SPINOR_OP_SE;
pr_debug("Erasing sector at %llx\n", offs);
/* Do erase in 4-byte mode on large Macronix chips */
if (rtl838x_nor->fourByteMode) {
cmd = SPINOR_OP_SE_4B;
spi_4b_set(rtl838x_nor, true);
}
/* TODO: do timeout and return error */
while
(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WIP);
do {
spi_write_enable(rtl838x_nor);
} while (!(rtl838x_nor_get_SR(rtl838x_nor) & SPI_WEL));
sfcsr = spi_prep(rtl838x_nor);
/* Send erase command, command IO-width is 1 (bit 25/26) */
spi_w32w(sfcsr | SPI_LEN1 | (0 << 25), SFCSR);
spi_w32w(cmd << 24, SFDR);
/* Send address */
spi_w32w(sfcsr | (sfcsr_addr_len << 28) | (0 << 25), SFCSR);
spi_w32w(offs << sfdr_addr_shift, SFDR);
return 0;
}
static int rtl838x_nor_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
{
int length = len;
u8 *buffer = buf;
uint32_t sfcsr, sfdr;
struct rtl838x_nor *rtl838x_nor = nor->priv;
pr_debug("In %s: opcode %x, len %x\n", __func__, opcode, len);
sfcsr = spi_prep(rtl838x_nor);
sfdr = opcode << 24;
sfcsr |= SPI_LEN1;
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
while (length > 0) {
SPI_WAIT_READY;
*(buffer) = spi_r32(SFDR) >> 24;
buffer++;
length--;
}
return len;
}
static int rtl838x_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)
{
uint32_t sfcsr, sfdr;
struct rtl838x_nor *rtl838x_nor = nor->priv;
pr_debug("In %s, opcode %x, len %x\n", __func__, opcode, len);
sfcsr = spi_prep(rtl838x_nor);
sfdr = opcode << 24;
if (len == 1) { /* SPINOR_OP_WRSR */
sfdr |= buf[0];
sfcsr |= SPI_LEN2;
}
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
return 0;
}
static int spi_enter_sio(struct spi_nor *nor)
{
uint32_t sfcsr, sfcr2, sfdr;
uint32_t ret = 0, reg = 0, size_bits;
struct rtl838x_nor *rtl838x_nor = nor->priv;
pr_debug("In %s\n", __func__);
rtl838x_nor->io_status = 0;
sfdr = SPI_C_RSTQIO << 24;
sfcsr = spi_prep(rtl838x_nor);
reg = spi_r32(SFCR2);
pr_debug("SFCR2: %x, size %x, rdopt: %x\n", reg, SFCR2_GETSIZE(reg),
(reg & SFCR2_RDOPT));
size_bits = rtl838x_nor->fourByteMode ? SFCR2_SIZE(0x6) : SFCR2_SIZE(0x7);
sfcr2 = SFCR2_HOLD_TILL_SFDR2 | size_bits
| (reg & SFCR2_RDOPT) | SFCR2_CMDIO(0)
| SFCR2_ADDRIO(0) | SFCR2_DUMMYCYCLE(4)
| SFCR2_DATAIO(0) | SFCR2_SFCMD(SPINOR_OP_READ_FAST);
pr_debug("SFCR2: %x, size %x\n", reg, SFCR2_GETSIZE(reg));
SPI_WAIT_READY;
spi_w32w(sfcr2, SFCR2);
spi_w32w(sfcsr, SFCSR);
spi_w32w(sfdr, SFDR);
spi_w32_mask(SFCR2_HOLD_TILL_SFDR2, 0, SFCR2);
rtl838x_nor->io_status &= ~IOSTATUS_CIO_MASK;
rtl838x_nor->io_status |= CIO1;
spi_prep(rtl838x_nor);
return ret;
}
int rtl838x_spi_nor_scan(struct spi_nor *nor, const char *name)
{
static const struct spi_nor_hwcaps hwcaps = {
.mask = SNOR_HWCAPS_READ | SNOR_HWCAPS_PP
| SNOR_HWCAPS_READ_FAST
};
struct rtl838x_nor *rtl838x_nor = nor->priv;
pr_debug("In %s\n", __func__);
spi_w32_mask(0, SFCR_EnableWBO, SFCR);
spi_w32_mask(0, SFCR_EnableRBO, SFCR);
rtl838x_nor->flags = CS0 | R_MODE;
spi_nor_scan(nor, NULL, &hwcaps);
pr_debug("------------- Got size: %llx\n", nor->mtd.size);
return 0;
}
int rtl838x_nor_init(struct rtl838x_nor *rtl838x_nor,
struct device_node *flash_node)
{
int ret;
struct spi_nor *nor;
pr_info("%s called\n", __func__);
nor = &rtl838x_nor->nor;
nor->dev = rtl838x_nor->dev;
nor->priv = rtl838x_nor;
spi_nor_set_flash_node(nor, flash_node);
nor->read_reg = rtl838x_nor_read_reg;
nor->write_reg = rtl838x_nor_write_reg;
nor->read = rtl838x_nor_read;
nor->write = rtl838x_nor_write;
nor->erase = rtl838x_erase;
nor->mtd.name = "rtl838x_nor";
nor->erase_opcode = rtl838x_nor->fourByteMode ? SPINOR_OP_SE_4B
: SPINOR_OP_SE;
/* initialized with NULL */
ret = rtl838x_spi_nor_scan(nor, NULL);
if (ret)
return ret;
spi_enter_sio(nor);
spi_write_disable(rtl838x_nor);
ret = mtd_device_parse_register(&nor->mtd, NULL, NULL, NULL, 0);
return ret;
}
static int rtl838x_nor_drv_probe(struct platform_device *pdev)
{
struct device_node *flash_np;
struct resource *res;
int ret;
struct rtl838x_nor *rtl838x_nor;
int addrMode;
pr_info("Initializing rtl838x_nor_driver\n");
if (!pdev->dev.of_node) {
dev_err(&pdev->dev, "No DT found\n");
return -EINVAL;
}
rtl838x_nor = devm_kzalloc(&pdev->dev, sizeof(*rtl838x_nor), GFP_KERNEL);
if (!rtl838x_nor)
return -ENOMEM;
platform_set_drvdata(pdev, rtl838x_nor);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rtl838x_nor->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR((void *)rtl838x_nor->base))
return PTR_ERR((void *)rtl838x_nor->base);
pr_info("SPI resource base is %08x\n", (u32)rtl838x_nor->base);
rtl838x_nor->dev = &pdev->dev;
/* only support one attached flash */
flash_np = of_get_next_available_child(pdev->dev.of_node, NULL);
if (!flash_np) {
dev_err(&pdev->dev, "no SPI flash device to configure\n");
ret = -ENODEV;
goto nor_free;
}
/* Get the 3/4 byte address mode as configure by bootloader */
if (soc_info.family == RTL8390_FAMILY_ID)
addrMode = rtl8390_get_addr_mode(rtl838x_nor);
else
addrMode = rtl838x_get_addr_mode(rtl838x_nor);
pr_info("Address mode is %d bytes\n", addrMode);
if (addrMode == 4)
rtl838x_nor->fourByteMode = true;
ret = rtl838x_nor_init(rtl838x_nor, flash_np);
nor_free:
return ret;
}
static int rtl838x_nor_drv_remove(struct platform_device *pdev)
{
/* struct rtl8xx_nor *rtl838x_nor = platform_get_drvdata(pdev); */
return 0;
}
static const struct of_device_id rtl838x_nor_of_ids[] = {
{ .compatible = "realtek,rtl838x-nor"},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, rtl838x_nor_of_ids);
static struct platform_driver rtl838x_nor_driver = {
.probe = rtl838x_nor_drv_probe,
.remove = rtl838x_nor_drv_remove,
.driver = {
.name = "rtl838x-nor",
.pm = NULL,
.of_match_table = rtl838x_nor_of_ids,
},
};
module_platform_driver(rtl838x_nor_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("RTL838x SPI NOR Flash Driver");

111
target/linux/realtek/files-5.10/drivers/mtd/spi-nor/rtl838x-spi.h
View File

@ -1,111 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2009 Realtek Semiconductor Corp.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _RTL838X_SPI_H
#define _RTL838X_SPI_H
/*
* Register access macros
*/
#define spi_r32(reg) readl(rtl838x_nor->base + reg)
#define spi_w32(val, reg) writel(val, rtl838x_nor->base + reg)
#define spi_w32_mask(clear, set, reg) \
spi_w32((spi_r32(reg) & ~(clear)) | (set), reg)
#define SPI_WAIT_READY do { \
} while (!(spi_r32(SFCSR) & SFCSR_SPI_RDY))
#define spi_w32w(val, reg) do { \
writel(val, rtl838x_nor->base + reg); \
SPI_WAIT_READY; \
} while (0)
#define SFCR (0x00) /*SPI Flash Configuration Register*/
#define SFCR_CLK_DIV(val) ((val)<<29)
#define SFCR_EnableRBO (1<<28)
#define SFCR_EnableWBO (1<<27)
#define SFCR_SPI_TCS(val) ((val)<<23) /*4 bit, 1111 */
#define SFCR2 (0x04) /*For memory mapped I/O */
#define SFCR2_SFCMD(val) ((val)<<24) /*8 bit, 1111_1111 */
#define SFCR2_SIZE(val) ((val)<<21) /*3 bit, 111 */
#define SFCR2_RDOPT (1<<20)
#define SFCR2_CMDIO(val) ((val)<<18) /*2 bit, 11 */
#define SFCR2_ADDRIO(val) ((val)<<16) /*2 bit, 11 */
#define SFCR2_DUMMYCYCLE(val) ((val)<<13) /*3 bit, 111 */
#define SFCR2_DATAIO(val) ((val)<<11) /*2 bit, 11 */
#define SFCR2_HOLD_TILL_SFDR2 (1<<10)
#define SFCR2_GETSIZE(x) (((x)&0x00E00000)>>21)
#define SFCSR (0x08) /*SPI Flash Control&Status Register*/
#define SFCSR_SPI_CSB0 (1<<31)
#define SFCSR_SPI_CSB1 (1<<30)
#define SFCSR_LEN(val) ((val)<<28) /*2 bits*/
#define SFCSR_SPI_RDY (1<<27)
#define SFCSR_IO_WIDTH(val) ((val)<<25) /*2 bits*/
#define SFCSR_CHIP_SEL (1<<24)
#define SFCSR_CMD_BYTE(val) ((val)<<16) /*8 bit, 1111_1111 */
#define SFDR (0x0C) /*SPI Flash Data Register*/
#define SFDR2 (0x10) /*SPI Flash Data Register - for post SPI bootup setting*/
#define SPI_CS_INIT (SFCSR_SPI_CSB0 | SFCSR_SPI_CSB1 | SPI_LEN1)
#define SPI_CS0 SFCSR_SPI_CSB0
#define SPI_CS1 SFCSR_SPI_CSB1
#define SPI_eCS0 ((SFCSR_SPI_CSB1)) /*and SFCSR to active CS0*/
#define SPI_eCS1 ((SFCSR_SPI_CSB0)) /*and SFCSR to active CS1*/
#define SPI_WIP (1) /* Write In Progress */
#define SPI_WEL (1<<1) /* Write Enable Latch*/
#define SPI_SST_QIO_WIP (1<<7) /* SST QIO Flash Write In Progress */
#define SPI_LEN_INIT 0xCFFFFFFF /* and SFCSR to init */
#define SPI_LEN4 0x30000000 /* or SFCSR to set */
#define SPI_LEN3 0x20000000 /* or SFCSR to set */
#define SPI_LEN2 0x10000000 /* or SFCSR to set */
#define SPI_LEN1 0x00000000 /* or SFCSR to set */
#define SPI_SETLEN(val) do { \
SPI_REG(SFCSR) &= 0xCFFFFFFF; \
SPI_REG(SFCSR) |= (val-1)<<28; \
} while (0)
/*
* SPI interface control
*/
#define RTL8390_SOC_SPI_MMIO_CONF (0x04)
#define IOSTATUS_CIO_MASK (0x00000038)
/* Chip select: bits 4-7*/
#define CS0 (1<<4)
#define R_MODE 0x04
/* io_status */
#define IO1 (1<<0)
#define IO2 (1<<1)
#define CIO1 (1<<3)
#define CIO2 (1<<4)
#define CMD_IO1 (1<<6)
#define W_ADDR_IO1 ((1)<<12)
#define R_ADDR_IO2 ((2)<<9)
#define R_DATA_IO2 ((2)<<15)
#define W_DATA_IO1 ((1)<<18)
/* Commands */
#define SPI_C_RSTQIO 0xFF
#define SPI_MAX_TRANSFER_SIZE 256
#endif /* _RTL838X_SPI_H */

23
target/linux/realtek/patches-5.10/400-mtd-add-rtl838x-spi-flash-driver.patch
View File

@ -1,23 +0,0 @@
--- a/drivers/mtd/spi-nor/Kconfig
+++ b/drivers/mtd/spi-nor/Kconfig
@@ -118,4 +118,13 @@ config SPI_INTEL_SPI_PLATFORM
To compile this driver as a module, choose M here: the module
will be called intel-spi-platform.
+config SPI_RTL838X
+ tristate "Realtek RTl838X SPI flash platform driver"
+ depends on RTL838X
+ help
+ This driver provides support for accessing SPI flash
+ in the RTL838X SoC.
+
+ Say N here unless you know what you are doing.
+
endif # MTD_SPI_NOR
--- a/drivers/mtd/spi-nor/Makefile
+++ b/drivers/mtd/spi-nor/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_SPI_NXP_SPIFI) += nxp-spifi
obj-$(CONFIG_SPI_INTEL_SPI) += intel-spi.o
obj-$(CONFIG_SPI_INTEL_SPI_PCI) += intel-spi-pci.o
obj-$(CONFIG_SPI_INTEL_SPI_PLATFORM) += intel-spi-platform.o
+obj-$(CONFIG_SPI_RTL838X) += rtl838x-nor.o