[U-Boot] [PATCH v2 1/4] spi:rewrite the Freescale DSPI driver.
Jagan Teki
jagannadha.sutradharudu-teki at xilinx.com
Fri Dec 13 13:09:19 CET 2013
Hi Chao Fu,
Please check the checkpatch.pl issues.
On Friday 13 December 2013 11:20 AM, Chao Fu wrote:
> From: Chao Fu <B44548 at freescale.com>
>
> Freescale DSPI module is used on both the ColdFire platform and the ARM
> platform. The original DSPI driver is written for ColdFire platform only,
> this patch rewrite the driver to make it be used across the platforms.
> Some files, functions, variables and macros were changed accordingly for
> some ColdFire boards and Arm boards.
> The rewrite including the following changes:
>
> Rename the file name :
> cf_spi.c -> fsl_dspi.c
> Move the file:
> arch/m68k/include/asm/coldfire/dspi.h -> include/fsl_dspi.h
> Rename the functions and variables:
> cfxxx -> dspixxx
> Renamed macros:
> CONFIG_CF_DSPI -> CONFIG_FSL_DSPI
> Keep the following functions for ColdFire:
> cfspi_port_conf()
> cfspi_claim_bus()
> cfspi_release_bus()
> Add function for ColdFire:
> get_dspi_clk()
>
> Tested on board M54455EVB and VF610-twr.
>
> Signed-off-by: Chao Fu <B44548 at freescale.com>
> ---
> arch/m68k/cpu/mcf5227x/cpu_init.c | 3 +-
> arch/m68k/cpu/mcf5227x/speed.c | 7 +
> arch/m68k/cpu/mcf52x2/speed.c | 7 +
> arch/m68k/cpu/mcf5445x/cpu_init.c | 3 +-
> arch/m68k/cpu/mcf5445x/speed.c | 7 +
> arch/m68k/include/asm/immap_5227x.h | 1 -
> arch/m68k/include/asm/immap_5301x.h | 1 -
> arch/m68k/include/asm/immap_5441x.h | 1 -
> arch/m68k/include/asm/immap_5445x.h | 1 -
> arch/m68k/include/asm/immap_547x_8x.h | 1 -
> drivers/spi/Makefile | 2 +-
> drivers/spi/{cf_spi.c => fsl_dspi.c} | 240 +++++++++++----------
> include/configs/M52277EVB.h | 3 +-
> include/configs/M54418TWR.h | 3 +-
> include/configs/M54451EVB.h | 3 +-
> include/configs/M54455EVB.h | 3 +-
> .../asm/coldfire/dspi.h => include/fsl_dspi.h | 8 +-
> 17 files changed, 156 insertions(+), 138 deletions(-)
> rename drivers/spi/{cf_spi.c => fsl_dspi.c} (56%)
> rename arch/m68k/include/asm/coldfire/dspi.h => include/fsl_dspi.h (96%)
>
> diff --git a/arch/m68k/cpu/mcf5227x/cpu_init.c b/arch/m68k/cpu/mcf5227x/cpu_init.c
> index 91b5fad..bd0b4ab 100644
> --- a/arch/m68k/cpu/mcf5227x/cpu_init.c
> +++ b/arch/m68k/cpu/mcf5227x/cpu_init.c
> @@ -16,6 +16,7 @@
> #include <asm/io.h>
> #include <asm/rtc.h>
> #include <linux/compiler.h>
> +#include <fsl_dspi.h>
>
> /*
> * Breath some life into the CPU...
> @@ -139,7 +140,7 @@ void uart_port_conf(int port)
> }
> }
>
> -#ifdef CONFIG_CF_DSPI
> +#ifdef CONFIG_FSL_DSPI
> void cfspi_port_conf(void)
> {
> gpio_t *gpio = (gpio_t *) MMAP_GPIO;
> diff --git a/arch/m68k/cpu/mcf5227x/speed.c b/arch/m68k/cpu/mcf5227x/speed.c
> index 44de4a6..2bfff13 100644
> --- a/arch/m68k/cpu/mcf5227x/speed.c
> +++ b/arch/m68k/cpu/mcf5227x/speed.c
> @@ -124,3 +124,10 @@ int get_clocks(void)
>
> return (0);
> }
> +
> +#ifdef CONFIG_FSL_DSPI
> +int get_dspi_clk(void)
> +{
> + return gd->bus_clk;
> +}
> +#endif
> diff --git a/arch/m68k/cpu/mcf52x2/speed.c b/arch/m68k/cpu/mcf52x2/speed.c
> index c5961d4..69b49c7 100644
> --- a/arch/m68k/cpu/mcf52x2/speed.c
> +++ b/arch/m68k/cpu/mcf52x2/speed.c
> @@ -83,3 +83,10 @@ int get_clocks (void)
>
> return (0);
> }
> +
> +#ifdef CONFIG_FSL_DSPI
> +int get_dspi_clk(void)
> +{
> + return gd->bus_clk;
> +}
> +#endif
> diff --git a/arch/m68k/cpu/mcf5445x/cpu_init.c b/arch/m68k/cpu/mcf5445x/cpu_init.c
> index 9c324dc..bb7a4cd 100644
> --- a/arch/m68k/cpu/mcf5445x/cpu_init.c
> +++ b/arch/m68k/cpu/mcf5445x/cpu_init.c
> @@ -16,6 +16,7 @@
> #include <asm/rtc.h>
> #include <asm/io.h>
> #include <linux/compiler.h>
> +#include <fsl_dspi.h>
>
> #if defined(CONFIG_CMD_NET)
> #include <config.h>
> @@ -423,7 +424,7 @@ int fecpin_setclear(struct eth_device *dev, int setclear)
> }
> #endif
>
> -#ifdef CONFIG_CF_DSPI
> +#ifdef CONFIG_FSL_DSPI
> void cfspi_port_conf(void)
> {
> gpio_t *gpio = (gpio_t *) MMAP_GPIO;
> diff --git a/arch/m68k/cpu/mcf5445x/speed.c b/arch/m68k/cpu/mcf5445x/speed.c
> index 07a9b35..29c858e 100644
> --- a/arch/m68k/cpu/mcf5445x/speed.c
> +++ b/arch/m68k/cpu/mcf5445x/speed.c
> @@ -279,3 +279,10 @@ int get_clocks(void)
>
> return (0);
> }
> +
> +#ifdef CONFIG_FSL_DSPI
> +int get_dspi_clk(void)
> +{
> + return gd->bus_clk;
> +}
> +#endif
> diff --git a/arch/m68k/include/asm/immap_5227x.h b/arch/m68k/include/asm/immap_5227x.h
> index 2cc4102..18a592e 100644
> --- a/arch/m68k/include/asm/immap_5227x.h
> +++ b/arch/m68k/include/asm/immap_5227x.h
> @@ -51,7 +51,6 @@
> #define MMAP_PLL (CONFIG_SYS_MBAR + 0x000C0000)
>
> #include <asm/coldfire/crossbar.h>
> -#include <asm/coldfire/dspi.h>
> #include <asm/coldfire/edma.h>
> #include <asm/coldfire/eport.h>
> #include <asm/coldfire/flexbus.h>
> diff --git a/arch/m68k/include/asm/immap_5301x.h b/arch/m68k/include/asm/immap_5301x.h
> index 337fe73..6b19023 100644
> --- a/arch/m68k/include/asm/immap_5301x.h
> +++ b/arch/m68k/include/asm/immap_5301x.h
> @@ -52,7 +52,6 @@
> #define MMAP_ESDHC (CONFIG_SYS_MBAR + 0x000CC000)
>
> #include <asm/coldfire/crossbar.h>
> -#include <asm/coldfire/dspi.h>
> #include <asm/coldfire/edma.h>
> #include <asm/coldfire/eport.h>
> #include <asm/coldfire/flexbus.h>
> diff --git a/arch/m68k/include/asm/immap_5441x.h b/arch/m68k/include/asm/immap_5441x.h
> index 4db6145..62cb681 100644
> --- a/arch/m68k/include/asm/immap_5441x.h
> +++ b/arch/m68k/include/asm/immap_5441x.h
> @@ -78,7 +78,6 @@
> #define MMAP_GPIO 0xEC094000
>
> #include <asm/coldfire/crossbar.h>
> -#include <asm/coldfire/dspi.h>
> #include <asm/coldfire/edma.h>
> #include <asm/coldfire/eport.h>
> #include <asm/coldfire/flexbus.h>
> diff --git a/arch/m68k/include/asm/immap_5445x.h b/arch/m68k/include/asm/immap_5445x.h
> index 2b12972..1525f9d 100644
> --- a/arch/m68k/include/asm/immap_5445x.h
> +++ b/arch/m68k/include/asm/immap_5445x.h
> @@ -55,7 +55,6 @@
>
> #include <asm/coldfire/ata.h>
> #include <asm/coldfire/crossbar.h>
> -#include <asm/coldfire/dspi.h>
> #include <asm/coldfire/edma.h>
> #include <asm/coldfire/eport.h>
> #include <asm/coldfire/flexbus.h>
> diff --git a/arch/m68k/include/asm/immap_547x_8x.h b/arch/m68k/include/asm/immap_547x_8x.h
> index e1ce220..baa7779 100644
> --- a/arch/m68k/include/asm/immap_547x_8x.h
> +++ b/arch/m68k/include/asm/immap_547x_8x.h
> @@ -41,7 +41,6 @@
> #define MMAP_SRAMCFG (CONFIG_SYS_MBAR + 0x0001FF00)
> #define MMAP_SEC (CONFIG_SYS_MBAR + 0x00020000)
>
> -#include <asm/coldfire/dspi.h>
> #include <asm/coldfire/eport.h>
> #include <asm/coldfire/flexbus.h>
> #include <asm/coldfire/flexcan.h>
> diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile
> index 27902fe..a047f02 100644
> --- a/drivers/spi/Makefile
> +++ b/drivers/spi/Makefile
> @@ -15,7 +15,7 @@ obj-$(CONFIG_ATMEL_DATAFLASH_SPI) += atmel_dataflash_spi.o
> obj-$(CONFIG_ATMEL_SPI) += atmel_spi.o
> obj-$(CONFIG_BFIN_SPI) += bfin_spi.o
> obj-$(CONFIG_BFIN_SPI6XX) += bfin_spi6xx.o
> -obj-$(CONFIG_CF_SPI) += cf_spi.o
> +obj-$(CONFIG_FSL_DSPI) += fsl_dspi.o
> obj-$(CONFIG_CF_QSPI) += cf_qspi.o
> obj-$(CONFIG_DAVINCI_SPI) += davinci_spi.o
> obj-$(CONFIG_EXYNOS_SPI) += exynos_spi.o
> diff --git a/drivers/spi/cf_spi.c b/drivers/spi/fsl_dspi.c
> similarity index 56%
> rename from drivers/spi/cf_spi.c
> rename to drivers/spi/fsl_dspi.c
> index 879a809..47ac1f8 100644
> --- a/drivers/spi/cf_spi.c
> +++ b/drivers/spi/fsl_dspi.c
> @@ -1,10 +1,10 @@
> /*
> - *
> * (C) Copyright 2000-2003
> * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
> *
> - * Copyright (C) 2004-2009 Freescale Semiconductor, Inc.
> + * Copyright (C) 2004-2009, 2013 Freescale Semiconductor, Inc.
> * TsiChung Liew (Tsi-Chung.Liew at freescale.com)
> + * Chao Fu (B44548 at freescale.com)
> *
> * SPDX-License-Identifier: GPL-2.0+
> */
> @@ -12,26 +12,28 @@
> #include <common.h>
> #include <spi.h>
> #include <malloc.h>
> +#include <asm/io.h>
> +#include <fsl_dspi.h>
> +
> +#ifdef CONFIG_VF610
> +#include <asm/arch/clock.h>
> +#endif
> +
> +#ifndef CONFIG_VF610
> #include <asm/immap.h>
> +#endif
>
> -struct cf_spi_slave {
> +struct dspi_slave {
> struct spi_slave slave;
> + struct dspi *regs;
> uint baudrate;
> int charbit;
> };
>
> -int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
> - void *din, ulong flags);
> -struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode);
> -void cfspi_init(void);
> -void cfspi_tx(u32 ctrl, u16 data);
> -u16 cfspi_rx(void);
> -
> -extern void cfspi_port_conf(void);
> -extern int cfspi_claim_bus(uint bus, uint cs);
> -extern void cfspi_release_bus(uint bus, uint cs);
> -
> -DECLARE_GLOBAL_DATA_PTR;
> +static inline struct dspi_slave *to_dspi_spi(struct spi_slave *slave)
> +{
> + return container_of(slave, struct dspi_slave, slave);
> +}
>
> #ifndef CONFIG_SPI_IDLE_VAL
> #if defined(CONFIG_SPI_MMC)
> @@ -41,77 +43,37 @@ DECLARE_GLOBAL_DATA_PTR;
> #endif
> #endif
>
> -#if defined(CONFIG_CF_DSPI)
> +#if defined(CONFIG_FSL_DSPI)
> /* DSPI specific mode */
> #define SPI_MODE_MOD 0x00200000
> #define SPI_DBLRATE 0x00100000
>
> -void cfspi_init(void)
> -{
> - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
> -
> - cfspi_port_conf(); /* port configuration */
> -
> - dspi->mcr = DSPI_MCR_MSTR | DSPI_MCR_CSIS7 | DSPI_MCR_CSIS6 |
> - DSPI_MCR_CSIS5 | DSPI_MCR_CSIS4 | DSPI_MCR_CSIS3 |
> - DSPI_MCR_CSIS2 | DSPI_MCR_CSIS1 | DSPI_MCR_CSIS0 |
> - DSPI_MCR_CRXF | DSPI_MCR_CTXF;
> -
> - /* Default setting in platform configuration */
> -#ifdef CONFIG_SYS_DSPI_CTAR0
> - dspi->ctar[0] = CONFIG_SYS_DSPI_CTAR0;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR1
> - dspi->ctar[1] = CONFIG_SYS_DSPI_CTAR1;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR2
> - dspi->ctar[2] = CONFIG_SYS_DSPI_CTAR2;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR3
> - dspi->ctar[3] = CONFIG_SYS_DSPI_CTAR3;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR4
> - dspi->ctar[4] = CONFIG_SYS_DSPI_CTAR4;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR5
> - dspi->ctar[5] = CONFIG_SYS_DSPI_CTAR5;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR6
> - dspi->ctar[6] = CONFIG_SYS_DSPI_CTAR6;
> -#endif
> -#ifdef CONFIG_SYS_DSPI_CTAR7
> - dspi->ctar[7] = CONFIG_SYS_DSPI_CTAR7;
> -#endif
> -}
> -
> -void cfspi_tx(u32 ctrl, u16 data)
> +static void dspi_tx(struct dspi_slave *dspislave, u32 ctrl, u16 data)
> {
> - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
> -
> - while ((dspi->sr & 0x0000F000) >= 4) ;
> + while ((readl(&dspislave->regs->sr) & 0x0000F000) >= 4)
> + ;
>
> - dspi->tfr = (ctrl | data);
> + writel((ctrl | data), &dspislave->regs->tfr);
> }
>
> -u16 cfspi_rx(void)
> +static u16 dspi_rx(struct dspi_slave *dspislave)
> {
> - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
> + while ((readl(&dspislave->regs->sr) & 0x000000F0) == 0)
> + ;
>
> - while ((dspi->sr & 0x000000F0) == 0) ;
> -
> - return (dspi->rfr & 0xFFFF);
> + return (u16)(readl(&dspislave->regs->rfr) & 0xFFFF);
> }
>
> -int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
> +int dspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
> void *din, ulong flags)
> {
> - struct cf_spi_slave *cfslave = (struct cf_spi_slave *)slave;
> + struct dspi_slave *dspislave = to_dspi_spi(slave);
> u16 *spi_rd16 = NULL, *spi_wr16 = NULL;
> u8 *spi_rd = NULL, *spi_wr = NULL;
> static u32 ctrl = 0;
> uint len = bitlen >> 3;
>
> - if (cfslave->charbit == 16) {
> + if (dspislave->charbit == 16) {
> bitlen >>= 1;
> spi_wr16 = (u16 *) dout;
> spi_rd16 = (u16 *) din;
> @@ -129,19 +91,19 @@ int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
> int tmp_len = len - 1;
> while (tmp_len--) {
> if (dout != NULL) {
> - if (cfslave->charbit == 16)
> - cfspi_tx(ctrl, *spi_wr16++);
> + if (dspislave->charbit == 16)
> + dspi_tx(dspislave, ctrl, *spi_wr16++);
> else
> - cfspi_tx(ctrl, *spi_wr++);
> - cfspi_rx();
> + dspi_tx(dspislave, ctrl, *spi_wr++);
> + dspi_rx(dspislave);
> }
>
> if (din != NULL) {
> - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL);
> - if (cfslave->charbit == 16)
> - *spi_rd16++ = cfspi_rx();
> + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL);
> + if (dspislave->charbit == 16)
> + *spi_rd16++ = dspi_rx(dspislave);
> else
> - *spi_rd++ = cfspi_rx();
> + *spi_rd++ = dspi_rx(dspislave);
> }
> }
>
> @@ -153,30 +115,30 @@ int cfspi_xfer(struct spi_slave *slave, uint bitlen, const void *dout,
>
> if (len) {
> if (dout != NULL) {
> - if (cfslave->charbit == 16)
> - cfspi_tx(ctrl, *spi_wr16);
> + if (dspislave->charbit == 16)
> + dspi_tx(dspislave, ctrl, *spi_wr16);
> else
> - cfspi_tx(ctrl, *spi_wr);
> - cfspi_rx();
> + dspi_tx(dspislave, ctrl, *spi_wr);
> + dspi_rx(dspislave);
> }
>
> if (din != NULL) {
> - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL);
> - if (cfslave->charbit == 16)
> - *spi_rd16 = cfspi_rx();
> + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL);
> + if (dspislave->charbit == 16)
> + *spi_rd16 = dspi_rx(dspislave);
> else
> - *spi_rd = cfspi_rx();
> + *spi_rd = dspi_rx(dspislave);
> }
> } else {
> /* dummy read */
> - cfspi_tx(ctrl, CONFIG_SPI_IDLE_VAL);
> - cfspi_rx();
> + dspi_tx(dspislave, ctrl, CONFIG_SPI_IDLE_VAL);
> + dspi_rx(dspislave);
> }
>
> return 0;
> }
>
> -struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
> +struct spi_slave *dspi_setup_slave(struct dspi_slave *dspislave, uint mode)
> {
> /*
> * bit definition for mode:
> @@ -191,7 +153,6 @@ struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
> * 11 - 8: Delay after transfer scaler
> * 7 - 0: SPI_CPHA, SPI_CPOL, SPI_LSB_FIRST
> */
> - volatile dspi_t *dspi = (dspi_t *) MMAP_DSPI;
> int prescaler[] = { 2, 3, 5, 7 };
> int scaler[] = {
> 2, 4, 6, 8,
> @@ -200,21 +161,63 @@ struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
> 4096, 8192, 16384, 32768
> };
> int i, j, pbrcnt, brcnt, diff, tmp, dbr = 0;
> - int best_i, best_j, bestmatch = 0x7FFFFFFF, baud_speed;
> + int best_i, best_j, bestmatch = 0x7FFFFFFF, baud_speed, bus_clk;
> u32 bus_setup = 0;
>
> + dspislave->regs = (dspi_t *) MMAP_DSPI;
> +
> +#ifndef CONFIG_VF610
> + cfspi_port_conf(); /* port configuration */
> +#endif
> +
> + writel(DSPI_MCR_MSTR | DSPI_MCR_CSIS7 | DSPI_MCR_CSIS6 |
> + DSPI_MCR_CSIS5 | DSPI_MCR_CSIS4 | DSPI_MCR_CSIS3 |
> + DSPI_MCR_CSIS2 | DSPI_MCR_CSIS1 | DSPI_MCR_CSIS0 |
> + DSPI_MCR_CRXF | DSPI_MCR_CTXF,
> + &dspislave->regs->mcr);
> + /* Default setting in platform configuration */
> +#ifdef CONFIG_SYS_DSPI_CTAR0
> + writel(CONFIG_SYS_DSPI_CTAR0, &dspislave->regs->ctar[0]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR1
> + writel(CONFIG_SYS_DSPI_CTAR1, &dspislave->regs->ctar[1]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR2
> + writel(CONFIG_SYS_DSPI_CTAR2, &dspislave->regs->ctar[2]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR3
> + writel(CONFIG_SYS_DSPI_CTAR3, &dspislave->regs->ctar[3]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR4
> + writel(CONFIG_SYS_DSPI_CTAR4, &dspislave->regs->ctar[4]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR5
> + writel(CONFIG_SYS_DSPI_CTAR5, &dspislave->regs->ctar[5]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR6
> + writel(CONFIG_SYS_DSPI_CTAR6, &dspislave->regs->ctar[6]);
> +#endif
> +#ifdef CONFIG_SYS_DSPI_CTAR7
> + writel(CONFIG_SYS_DSPI_CTAR7, &dspislave->regs->ctar[7]);
> +#endif
> +
> tmp = (prescaler[3] * scaler[15]);
> +#ifdef CONFIG_VF610
> + bus_clk = mxc_get_clock(MXC_DSPI_CLK);
> +#else
> + bus_clk = get_dspi_clk();
> +#endif
> /* Maximum and minimum baudrate it can handle */
> - if ((cfslave->baudrate > (gd->bus_clk >> 1)) ||
> - (cfslave->baudrate < (gd->bus_clk / tmp))) {
> + if ((dspislave->baudrate > (bus_clk >> 1)) ||
> + (dspislave->baudrate < (bus_clk / tmp))) {
> printf("Exceed baudrate limitation: Max %d - Min %d\n",
> - (int)(gd->bus_clk >> 1), (int)(gd->bus_clk / tmp));
> + (int)(bus_clk >> 1), (int)(bus_clk / tmp));
> return NULL;
> }
>
> /* Activate Double Baud when it exceed 1/4 the bus clk */
> if ((CONFIG_SYS_DSPI_CTAR0 & DSPI_CTAR_DBR) ||
> - (cfslave->baudrate > (gd->bus_clk / (prescaler[0] * scaler[0])))) {
> + (dspislave->baudrate > (bus_clk / (prescaler[0] * scaler[0])))) {
> bus_setup |= DSPI_CTAR_DBR;
> dbr = 1;
> }
> @@ -231,7 +234,8 @@ struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
>
> if ((mode & 0xF0000000) == 0)
> bus_setup |=
> - dspi->ctar[cfslave->slave.bus] & 0x78000000;
> + readl(&dspislave->regs->ctar[dspislave->slave.bus])
> + & 0x78000000;
> else
> bus_setup |= ((mode & 0xF0000000) >> 1);
>
> @@ -246,25 +250,26 @@ struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
> bus_setup |= (mode & 0x0FC00000) >> 4; /* PSCSCK, PASC, PDT */
> bus_setup |= (mode & 0x000FFF00) >> 4; /* CSSCK, ASC, DT */
> } else
> - bus_setup |= (dspi->ctar[cfslave->slave.bus] & 0x78FCFFF0);
> + bus_setup |= readl(&dspislave->regs->ctar[dspislave->slave.bus])
> + & 0x78FCFFF0;
>
> - cfslave->charbit =
> - ((dspi->ctar[cfslave->slave.bus] & 0x78000000) ==
> - 0x78000000) ? 16 : 8;
> + dspislave->charbit =
> + ((readl(&dspislave->regs->ctar[dspislave->slave.bus]) & 0x78000000)
> + == 0x78000000) ? 16 : 8;
>
> pbrcnt = sizeof(prescaler) / sizeof(int);
> brcnt = sizeof(scaler) / sizeof(int);
>
> /* baudrate calculation - to closer value, may not be exact match */
> for (best_i = 0, best_j = 0, i = 0; i < pbrcnt; i++) {
> - baud_speed = gd->bus_clk / prescaler[i];
> + baud_speed = bus_clk / prescaler[i];
> for (j = 0; j < brcnt; j++) {
> tmp = (baud_speed / scaler[j]) * (1 + dbr);
>
> - if (tmp > cfslave->baudrate)
> - diff = tmp - cfslave->baudrate;
> + if (tmp > dspislave->baudrate)
> + diff = tmp - dspislave->baudrate;
> else
> - diff = cfslave->baudrate - tmp;
> + diff = dspislave->baudrate - tmp;
>
> if (diff < bestmatch) {
> bestmatch = diff;
> @@ -273,16 +278,12 @@ struct spi_slave *cfspi_setup_slave(struct cf_spi_slave *cfslave, uint mode)
> }
> }
> }
> - bus_setup |= (DSPI_CTAR_PBR(best_i) | DSPI_CTAR_BR(best_j));
> - dspi->ctar[cfslave->slave.bus] = bus_setup;
>
> - return &cfslave->slave;
> + bus_setup |= (DSPI_CTAR_PBR(best_i) | DSPI_CTAR_BR(best_j));
> + writel(bus_setup, &dspislave->regs->ctar[dspislave->slave.bus]) ;
> + return &dspislave->slave;
> }
> -#endif /* CONFIG_CF_DSPI */
> -
> -#ifdef CONFIG_CF_QSPI
> -/* 52xx, 53xx */
> -#endif /* CONFIG_CF_QSPI */
> +#endif /* CONFIG_FSL_DSPI */
>
> #ifdef CONFIG_CMD_SPI
> int spi_cs_is_valid(unsigned int bus, unsigned int cs)
> @@ -303,25 +304,22 @@ void spi_init_r(void)
>
> void spi_init(void)
> {
> - cfspi_init();
> }
>
> struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
> unsigned int max_hz, unsigned int mode)
> {
> - struct cf_spi_slave *cfslave;
> + struct dspi_slave *dspislave;
>
> if (!spi_cs_is_valid(bus, cs))
> return NULL;
> -
> - cfslave = spi_alloc_slave(struct cf_spi_slave, bus, cs);
> - if (!cfslave)
> + dspislave = spi_alloc_slave(struct dspi_slave, bus, cs);
> + if (!dspislave)
> return NULL;
>
> - cfslave->baudrate = max_hz;
> -
> + dspislave->baudrate = max_hz;
> /* specific setup */
> - return cfspi_setup_slave(cfslave, mode);
> + return dspi_setup_slave(dspislave, mode);
> }
>
> void spi_free_slave(struct spi_slave *slave)
> @@ -331,17 +329,23 @@ void spi_free_slave(struct spi_slave *slave)
>
> int spi_claim_bus(struct spi_slave *slave)
> {
> +#ifdef CONFIG_VF610
> + return 0;
> +#else
> return cfspi_claim_bus(slave->bus, slave->cs);
> +#endif
> }
>
> void spi_release_bus(struct spi_slave *slave)
> {
> +#ifndef CONFIG_VF610
> cfspi_release_bus(slave->bus, slave->cs);
> +#endif
> }
>
> int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
> void *din, unsigned long flags)
> {
> - return cfspi_xfer(slave, bitlen, dout, din, flags);
> + return dspi_xfer(slave, bitlen, dout, din, flags);
> }
> #endif /* CONFIG_CMD_SPI */
> diff --git a/include/configs/M52277EVB.h b/include/configs/M52277EVB.h
> index cde7305..485af4c 100644
> --- a/include/configs/M52277EVB.h
> +++ b/include/configs/M52277EVB.h
> @@ -137,8 +137,7 @@
> #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
>
> /* DSPI and Serial Flash */
> -#define CONFIG_CF_SPI
> -#define CONFIG_CF_DSPI
> +#define CONFIG_FSL_DSPI
> #define CONFIG_HARD_SPI
> #define CONFIG_SYS_SBFHDR_SIZE 0x7
> #ifdef CONFIG_CMD_SPI
> diff --git a/include/configs/M54418TWR.h b/include/configs/M54418TWR.h
> index de063b7..d8bb8cd 100644
> --- a/include/configs/M54418TWR.h
> +++ b/include/configs/M54418TWR.h
> @@ -207,8 +207,7 @@
> #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
>
> /* DSPI and Serial Flash */
> -#define CONFIG_CF_SPI
> -#define CONFIG_CF_DSPI
> +#define CONFIG_FSL_DSPI
> #define CONFIG_SERIAL_FLASH
> #define CONFIG_HARD_SPI
> #define CONFIG_SYS_SBFHDR_SIZE 0x7
> diff --git a/include/configs/M54451EVB.h b/include/configs/M54451EVB.h
> index 0f4b726..7141601 100644
> --- a/include/configs/M54451EVB.h
> +++ b/include/configs/M54451EVB.h
> @@ -148,8 +148,7 @@
> #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
>
> /* DSPI and Serial Flash */
> -#define CONFIG_CF_SPI
> -#define CONFIG_CF_DSPI
> +#define CONFIG_FSL_DSPI
> #define CONFIG_SERIAL_FLASH
> #define CONFIG_HARD_SPI
> #define CONFIG_SYS_SBFHDR_SIZE 0x7
> diff --git a/include/configs/M54455EVB.h b/include/configs/M54455EVB.h
> index 7a55d3c..15b7c40 100644
> --- a/include/configs/M54455EVB.h
> +++ b/include/configs/M54455EVB.h
> @@ -181,8 +181,7 @@
> #define CONFIG_SYS_IMMR CONFIG_SYS_MBAR
>
> /* DSPI and Serial Flash */
> -#define CONFIG_CF_SPI
> -#define CONFIG_CF_DSPI
> +#define CONFIG_FSL_DSPI
> #define CONFIG_HARD_SPI
> #define CONFIG_SYS_SBFHDR_SIZE 0x13
> #ifdef CONFIG_CMD_SPI
> diff --git a/arch/m68k/include/asm/coldfire/dspi.h b/include/fsl_dspi.h
> similarity index 96%
> rename from arch/m68k/include/asm/coldfire/dspi.h
> rename to include/fsl_dspi.h
> index fda7138..36a352e 100644
> --- a/arch/m68k/include/asm/coldfire/dspi.h
> +++ b/include/fsl_dspi.h
> @@ -1,8 +1,9 @@
> /*
> - * MCF5227x Internal Memory Map
> + * Freescale DSPI Module Defines
> *
> - * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
> + * Copyright (C) 2004-2007, 2013 Freescale Semiconductor, Inc.
> * TsiChung Liew (Tsi-Chung.Liew at freescale.com)
> + * Chao Fu (B44548 at freesacle.com)
> *
> * SPDX-License-Identifier: GPL-2.0+
> */
> @@ -19,8 +20,7 @@ typedef struct dspi {
> u32 sr; /* 0x2C */
> u32 irsr; /* 0x30 */
> u32 tfr; /* 0x34 - PUSHR */
> - u16 resv1; /* 0x38 */
> - u16 rfr; /* 0x3A - POPR */
> + u32 rfr; /* 0x38 - POPR */
> #ifdef CONFIG_MCF547x_8x
> u32 tfdr[4]; /* 0x3C */
> u8 resv2[0x30]; /* 0x40 */
>
CHECK: No space is necessary after a cast
#461: FILE: drivers/spi/fsl_dspi.c:167:
+ dspislave->regs = (dspi_t *) MMAP_DSPI;
CHECK: space prohibited before semicolon
#576: FILE: drivers/spi/fsl_dspi.c:283:
+ writel(bus_setup, &dspislave->regs->ctar[dspislave->slave.bus]) ;
total: 0 errors, 0 warnings, 2 checks, 561 lines checked
--
Thanks,
Jagan.
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