Header file have macro's and register definition and some unneeded function proto types which becomes tunned further in future patches and entire driver code resides in one file for more readability.
Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org Cc: Christophe Ricard christophe-h.ricard@st.com Signed-off-by: Jagan Teki jteki@openedev.com Signed-off-by: Christophe Ricard christophe-h.ricard@st.com ---
Changes in v5: - Few code style fixes reported by patman - Remove omap3_spi_txrx, omap3_spi_write, omap3_spi_read header in C file to avoid "externs should be avoided in .c files" patman warnings.
Changes in v4: None Changes in v3: None Changes in v2: None
drivers/spi/omap3_spi.c | 86 +++++++++++++++++++++++++++++++++++++- drivers/spi/omap3_spi.h | 109 ------------------------------------------------ 2 files changed, 84 insertions(+), 111 deletions(-) delete mode 100644 drivers/spi/omap3_spi.h
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index 95cdfa3..e2cfbac 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -18,9 +18,91 @@ #include <spi.h> #include <malloc.h> #include <asm/io.h> -#include "omap3_spi.h"
-#define SPI_WAIT_TIMEOUT 10 +#if defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX) +#define OMAP3_MCSPI1_BASE 0x48030100 +#define OMAP3_MCSPI2_BASE 0x481A0100 +#else +#define OMAP3_MCSPI1_BASE 0x48098000 +#define OMAP3_MCSPI2_BASE 0x4809A000 +#define OMAP3_MCSPI3_BASE 0x480B8000 +#define OMAP3_MCSPI4_BASE 0x480BA000 +#endif + +/* 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 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_slave { + struct spi_slave slave; + struct mcspi *regs; + unsigned int freq; + unsigned int mode; +}; + +static inline struct omap3_spi_slave *to_omap3_spi(struct spi_slave *slave) +{ return container_of(slave, struct omap3_spi_slave, slave); }
static void spi_reset(struct omap3_spi_slave *ds) { diff --git a/drivers/spi/omap3_spi.h b/drivers/spi/omap3_spi.h deleted file mode 100644 index 6a07c6d..0000000 --- a/drivers/spi/omap3_spi.h +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Register definitions for the OMAP3 McSPI Controller - * - * Copyright (C) 2010 Dirk Behme dirk.behme@googlemail.com - * - * Parts taken from linux/drivers/spi/omap2_mcspi.c - * Copyright (C) 2005, 2006 Nokia Corporation - * - * Modified by Ruslan Araslanov ruslan.araslanov@vitecmm.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#ifndef _OMAP3_SPI_H_ -#define _OMAP3_SPI_H_ - -#if defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX) -#define OMAP3_MCSPI1_BASE 0x48030100 -#define OMAP3_MCSPI2_BASE 0x481A0100 -#else -#define OMAP3_MCSPI1_BASE 0x48098000 -#define OMAP3_MCSPI2_BASE 0x4809A000 -#define OMAP3_MCSPI3_BASE 0x480B8000 -#define OMAP3_MCSPI4_BASE 0x480BA000 -#endif - -#define OMAP3_MCSPI_MAX_FREQ 48000000 - -/* 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 */ -}; - -/* 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) - -struct omap3_spi_slave { - struct spi_slave slave; - struct mcspi *regs; - unsigned int freq; - unsigned int mode; -}; - -static inline struct omap3_spi_slave *to_omap3_spi(struct spi_slave *slave) -{ - return container_of(slave, struct omap3_spi_slave, slave); -} - -int omap3_spi_txrx(struct spi_slave *slave, unsigned int len, const void *txp, - void *rxp, unsigned long flags); -int omap3_spi_write(struct spi_slave *slave, unsigned int len, const void *txp, - unsigned long flags); -int omap3_spi_read(struct spi_slave *slave, unsigned int len, void *rxp, - unsigned long flags); - -#endif /* _OMAP3_SPI_H_ */