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arm: mach-omap2: am33xx: Add device structure for spi 

Add platform data and a device structure for the spi device
present on am335x-icev2. This requires moving all omap3_spi
platform data structures and symbols to an omap3_spi.h so that
the board file can access them.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
This commit is contained in:
Faiz Abbas 2020-09-14 12:11:15 +05:30 committed by Lokesh Vutla
parent 280af01156
commit 41cf3cb39d
4 changed files with 97 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
arch/arm/mach-omap2/am33xx/board.c
View File

@ -14,6 +14,7 @@
#include <init.h>
#include <net.h>
#include <ns16550.h>
#include <omap3_spi.h>
#include <spl.h>
#include <asm/arch/cpu.h>
#include <asm/arch/hardware.h>
@ -49,6 +50,12 @@
#define AM43XX_READ_WRITE_LEVELING_CTRL_OFFSET 0xDC
#define AM43XX_RDWRLVLFULL_START 0x80000000
/* SPI flash. */
#if CONFIG_IS_ENABLED(DM_SPI) && !CONFIG_IS_ENABLED(OF_CONTROL)
#define AM33XX_SPI0_BASE 0x48030000
#define AM33XX_SPI0_OFFSET (AM33XX_SPI0_BASE + OMAP4_MCSPI_REG_OFFSET)
#endif
DECLARE_GLOBAL_DATA_PTR;
int dram_init(void)
@ -142,6 +149,17 @@ U_BOOT_DEVICES(am33xx_gpios) = {
#endif
};
#endif
#if CONFIG_IS_ENABLED(DM_SPI) && !CONFIG_IS_ENABLED(OF_CONTROL)
static const struct omap3_spi_plat omap3_spi_pdata = {
.regs = (struct mcspi *)AM33XX_SPI0_OFFSET,
.pin_dir = MCSPI_PINDIR_D0_IN_D1_OUT,
};
U_BOOT_DEVICE(am33xx_spi) = {
.name = "omap3_spi",
.platdata = &omap3_spi_pdata,
};
#endif
#endif
#if !CONFIG_IS_ENABLED(DM_GPIO)

70
drivers/spi/omap3_spi.c
View File

@ -22,82 +22,14 @@
#include <malloc.h>
#include <asm/io.h>
#include <linux/bitops.h>
#include <omap3_spi.h>
DECLARE_GLOBAL_DATA_PTR;
#define OMAP4_MCSPI_REG_OFFSET 0x100
struct omap2_mcspi_platform_config {
unsigned int regs_offset;
};
/* per-register bitmasks */
#define OMAP3_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3)
#define OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP BIT(2)
#define OMAP3_MCSPI_SYSCONFIG_AUTOIDLE BIT(0)
#define OMAP3_MCSPI_SYSCONFIG_SOFTRESET BIT(1)
#define OMAP3_MCSPI_SYSSTATUS_RESETDONE BIT(0)
#define OMAP3_MCSPI_MODULCTRL_SINGLE BIT(0)
#define OMAP3_MCSPI_MODULCTRL_MS BIT(2)
#define OMAP3_MCSPI_MODULCTRL_STEST BIT(3)
#define OMAP3_MCSPI_CHCONF_PHA BIT(0)
#define OMAP3_MCSPI_CHCONF_POL BIT(1)
#define OMAP3_MCSPI_CHCONF_CLKD_MASK GENMASK(5, 2)
#define OMAP3_MCSPI_CHCONF_EPOL BIT(6)
#define OMAP3_MCSPI_CHCONF_WL_MASK GENMASK(11, 7)
#define OMAP3_MCSPI_CHCONF_TRM_RX_ONLY BIT(12)
#define OMAP3_MCSPI_CHCONF_TRM_TX_ONLY BIT(13)
#define OMAP3_MCSPI_CHCONF_TRM_MASK GENMASK(13, 12)
#define OMAP3_MCSPI_CHCONF_DMAW BIT(14)
#define OMAP3_MCSPI_CHCONF_DMAR BIT(15)
#define OMAP3_MCSPI_CHCONF_DPE0 BIT(16)
#define OMAP3_MCSPI_CHCONF_DPE1 BIT(17)
#define OMAP3_MCSPI_CHCONF_IS BIT(18)
#define OMAP3_MCSPI_CHCONF_TURBO BIT(19)
#define OMAP3_MCSPI_CHCONF_FORCE BIT(20)
#define OMAP3_MCSPI_CHSTAT_RXS BIT(0)
#define OMAP3_MCSPI_CHSTAT_TXS BIT(1)
#define OMAP3_MCSPI_CHSTAT_EOT BIT(2)
#define OMAP3_MCSPI_CHCTRL_EN BIT(0)
#define OMAP3_MCSPI_CHCTRL_DIS (0 << 0)
#define OMAP3_MCSPI_WAKEUPENABLE_WKEN BIT(0)
#define MCSPI_PINDIR_D0_IN_D1_OUT 0
#define MCSPI_PINDIR_D0_OUT_D1_IN 1
#define OMAP3_MCSPI_MAX_FREQ 48000000
#define SPI_WAIT_TIMEOUT 10
/* OMAP3 McSPI registers */
struct mcspi_channel {
unsigned int chconf; /* 0x2C, 0x40, 0x54, 0x68 */
unsigned int chstat; /* 0x30, 0x44, 0x58, 0x6C */
unsigned int chctrl; /* 0x34, 0x48, 0x5C, 0x70 */
unsigned int tx; /* 0x38, 0x4C, 0x60, 0x74 */
unsigned int rx; /* 0x3C, 0x50, 0x64, 0x78 */
};
struct mcspi {
unsigned char res1[0x10];
unsigned int sysconfig; /* 0x10 */
unsigned int sysstatus; /* 0x14 */
unsigned int irqstatus; /* 0x18 */
unsigned int irqenable; /* 0x1C */
unsigned int wakeupenable; /* 0x20 */
unsigned int syst; /* 0x24 */
unsigned int modulctrl; /* 0x28 */
struct mcspi_channel channel[4];
/* channel0: 0x2C - 0x3C, bus 0 & 1 & 2 & 3 */
/* channel1: 0x40 - 0x50, bus 0 & 1 */
/* channel2: 0x54 - 0x64, bus 0 & 1 */
/* channel3: 0x68 - 0x78, bus 0 */
};
struct omap3_spi_priv {
struct mcspi *regs;
unsigned int cs;

2
include/configs/am335x_evm.h
View File

@ -287,8 +287,6 @@
#define CONFIG_SYS_ENV_SECT_SIZE CONFIG_SYS_NAND_BLOCK_SIZE
#endif
/* SPI flash. */
/* Network. */
/* Enable Atheros phy driver */

78
include/omap3_spi.h Normal file
View File

@ -0,0 +1,78 @@
/* SPDX-License-Identifier: GPL-2.0+ */
#ifndef __OMAP3_SPI_H_
#define __OMAP3_SPI_H_
/* per-register bitmasks */
#define OMAP3_MCSPI_SYSCONFIG_SMARTIDLE (2 << 3)
#define OMAP3_MCSPI_SYSCONFIG_ENAWAKEUP BIT(2)
#define OMAP3_MCSPI_SYSCONFIG_AUTOIDLE BIT(0)
#define OMAP3_MCSPI_SYSCONFIG_SOFTRESET BIT(1)
#define OMAP3_MCSPI_SYSSTATUS_RESETDONE BIT(0)
#define OMAP3_MCSPI_MODULCTRL_SINGLE BIT(0)
#define OMAP3_MCSPI_MODULCTRL_MS BIT(2)
#define OMAP3_MCSPI_MODULCTRL_STEST BIT(3)
#define OMAP3_MCSPI_CHCONF_PHA BIT(0)
#define OMAP3_MCSPI_CHCONF_POL BIT(1)
#define OMAP3_MCSPI_CHCONF_CLKD_MASK GENMASK(5, 2)
#define OMAP3_MCSPI_CHCONF_EPOL BIT(6)
#define OMAP3_MCSPI_CHCONF_WL_MASK GENMASK(11, 7)
#define OMAP3_MCSPI_CHCONF_TRM_RX_ONLY BIT(12)
#define OMAP3_MCSPI_CHCONF_TRM_TX_ONLY BIT(13)
#define OMAP3_MCSPI_CHCONF_TRM_MASK GENMASK(13, 12)
#define OMAP3_MCSPI_CHCONF_DMAW BIT(14)
#define OMAP3_MCSPI_CHCONF_DMAR BIT(15)
#define OMAP3_MCSPI_CHCONF_DPE0 BIT(16)
#define OMAP3_MCSPI_CHCONF_DPE1 BIT(17)
#define OMAP3_MCSPI_CHCONF_IS BIT(18)
#define OMAP3_MCSPI_CHCONF_TURBO BIT(19)
#define OMAP3_MCSPI_CHCONF_FORCE BIT(20)
#define OMAP3_MCSPI_CHSTAT_RXS BIT(0)
#define OMAP3_MCSPI_CHSTAT_TXS BIT(1)
#define OMAP3_MCSPI_CHSTAT_EOT BIT(2)
#define OMAP3_MCSPI_CHCTRL_EN BIT(0)
#define OMAP3_MCSPI_CHCTRL_DIS (0 << 0)
#define OMAP3_MCSPI_WAKEUPENABLE_WKEN BIT(0)
#define MCSPI_PINDIR_D0_IN_D1_OUT 0
#define MCSPI_PINDIR_D0_OUT_D1_IN 1
#define OMAP3_MCSPI_MAX_FREQ 48000000
#define SPI_WAIT_TIMEOUT 10
#define OMAP4_MCSPI_REG_OFFSET 0x100
/* OMAP3 McSPI registers */
struct mcspi_channel {
unsigned int chconf; /* 0x2C, 0x40, 0x54, 0x68 */
unsigned int chstat; /* 0x30, 0x44, 0x58, 0x6C */
unsigned int chctrl; /* 0x34, 0x48, 0x5C, 0x70 */
unsigned int tx; /* 0x38, 0x4C, 0x60, 0x74 */
unsigned int rx; /* 0x3C, 0x50, 0x64, 0x78 */
};
struct mcspi {
unsigned char res1[0x10];
unsigned int sysconfig; /* 0x10 */
unsigned int sysstatus; /* 0x14 */
unsigned int irqstatus; /* 0x18 */
unsigned int irqenable; /* 0x1C */
unsigned int wakeupenable; /* 0x20 */
unsigned int syst; /* 0x24 */
unsigned int modulctrl; /* 0x28 */
struct mcspi_channel channel[4];
/* channel0: 0x2C - 0x3C, bus 0 & 1 & 2 & 3 */
/* channel1: 0x40 - 0x50, bus 0 & 1 */
/* channel2: 0x54 - 0x64, bus 0 & 1 */
/* channel3: 0x68 - 0x78, bus 0 */
};
struct omap3_spi_plat {
struct mcspi *regs;
unsigned int pin_dir:1;
};
#endif