[U-Boot] [PATCH v2] i2c, mxc: rework i2c base address names for different SoCs
Stefano Babic
sbabic at denx.de
Tue May 26 14:20:28 CEST 2015
On 18/05/2015 10:58, Heiko Schocher wrote:
> rework and unify i2c address names for different SoCs, which
> use the mxc_i2c driver.
>
> Signed-off-by: Heiko Schocher <hs at denx.de>
>
> ---
>
> Changes in v2:
> - add comment from Stefano Babic
> - rebase against 3bfe3ce2a6e3b04da1
>
> arch/arm/include/asm/arch-imx/imx-regs.h | 2 +-
> arch/arm/include/asm/arch-mx25/imx-regs.h | 6 ++--
> arch/arm/include/asm/arch-mx27/imx-regs.h | 4 +--
> arch/arm/include/asm/arch-vf610/imx-regs.h | 2 +-
> drivers/i2c/mxc_i2c.c | 49 +++++++++++++++---------------
> 5 files changed, 31 insertions(+), 32 deletions(-)
>
> diff --git a/arch/arm/include/asm/arch-imx/imx-regs.h b/arch/arm/include/asm/arch-imx/imx-regs.h
> index 4de0779..93e3369 100644
> --- a/arch/arm/include/asm/arch-imx/imx-regs.h
> +++ b/arch/arm/include/asm/arch-imx/imx-regs.h
> @@ -42,7 +42,7 @@
> #define IMX_MMC_BASE (0x14000 + IMX_IO_BASE)
> #define IMX_ASP_BASE (0x15000 + IMX_IO_BASE)
> #define IMX_BTA_BASE (0x16000 + IMX_IO_BASE)
> -#define IMX_I2C_BASE (0x17000 + IMX_IO_BASE)
> +#define I2C1_BASE_ADDR (0x17000 + IMX_IO_BASE)
> #define IMX_SSI_BASE (0x18000 + IMX_IO_BASE)
> #define IMX_SPI2_BASE (0x19000 + IMX_IO_BASE)
> #define IMX_MSHC_BASE (0x1A000 + IMX_IO_BASE)
> diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h
> index 3dffa4a..78c4e9b 100644
> --- a/arch/arm/include/asm/arch-mx25/imx-regs.h
> +++ b/arch/arm/include/asm/arch-mx25/imx-regs.h
> @@ -293,13 +293,13 @@ struct cspi_regs {
> #define IMX_ETB_SLOT4_BASE (0x43F0C000)
> #define IMX_ETB_SLOT5_BASE (0x43F10000)
> #define IMX_ECT_CTIO_BASE (0x43F18000)
> -#define IMX_I2C_BASE (0x43F80000)
> -#define IMX_I2C3_BASE (0x43F84000)
> +#define I2C1_BASE_ADDR (0x43F80000)
> +#define I2C3_BASE_ADDR (0x43F84000)
> #define IMX_CAN1_BASE (0x43F88000)
> #define IMX_CAN2_BASE (0x43F8C000)
> #define UART1_BASE (0x43F90000)
> #define UART2_BASE (0x43F94000)
> -#define IMX_I2C2_BASE (0x43F98000)
> +#define I2C2_BASE_ADDR (0x43F98000)
> #define IMX_OWIRE_BASE (0x43F9C000)
> #define IMX_CSPI1_BASE (0x43FA4000)
> #define IMX_KPP_BASE (0x43FA8000)
> diff --git a/arch/arm/include/asm/arch-mx27/imx-regs.h b/arch/arm/include/asm/arch-mx27/imx-regs.h
> index 7402e31..baf1d29 100644
> --- a/arch/arm/include/asm/arch-mx27/imx-regs.h
> +++ b/arch/arm/include/asm/arch-mx27/imx-regs.h
> @@ -184,13 +184,13 @@ struct fuse_bank0_regs {
> #define UART2_BASE (0x0b000 + IMX_IO_BASE)
> #define UART3_BASE (0x0c000 + IMX_IO_BASE)
> #define UART4_BASE (0x0d000 + IMX_IO_BASE)
> -#define IMX_I2C1_BASE (0x12000 + IMX_IO_BASE)
> +#define I2C1_BASE_ADDR (0x12000 + IMX_IO_BASE)
> #define IMX_GPIO_BASE (0x15000 + IMX_IO_BASE)
> #define IMX_TIM4_BASE (0x19000 + IMX_IO_BASE)
> #define IMX_TIM5_BASE (0x1a000 + IMX_IO_BASE)
> #define IMX_UART5_BASE (0x1b000 + IMX_IO_BASE)
> #define IMX_UART6_BASE (0x1c000 + IMX_IO_BASE)
> -#define IMX_I2C2_BASE (0x1D000 + IMX_IO_BASE)
> +#define I2C2_BASE_ADDR (0x1D000 + IMX_IO_BASE)
> #define IMX_TIM6_BASE (0x1f000 + IMX_IO_BASE)
> #define IMX_AIPI2_BASE (0x20000 + IMX_IO_BASE)
> #define IMX_PLL_BASE (0x27000 + IMX_IO_BASE)
> diff --git a/arch/arm/include/asm/arch-vf610/imx-regs.h b/arch/arm/include/asm/arch-vf610/imx-regs.h
> index a7d765a..2021981 100644
> --- a/arch/arm/include/asm/arch-vf610/imx-regs.h
> +++ b/arch/arm/include/asm/arch-vf610/imx-regs.h
> @@ -74,7 +74,7 @@
> #define ESAI_BASE_ADDR (AIPS0_BASE_ADDR + 0x00062000)
> #define ESAI_FIFO_BASE_ADDR (AIPS0_BASE_ADDR + 0x00063000)
> #define WDOG_BASE_ADDR (AIPS0_BASE_ADDR + 0x00065000)
> -#define I2C0_BASE_ADDR (AIPS0_BASE_ADDR + 0x00066000)
> +#define I2C1_BASE_ADDR (AIPS0_BASE_ADDR + 0x00066000)
> #define WKUP_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006A000)
> #define CCM_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006B000)
> #define GPC_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006C000)
> diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
> index 2949e52..b3c50aa 100644
> --- a/drivers/i2c/mxc_i2c.c
> +++ b/drivers/i2c/mxc_i2c.c
> @@ -170,6 +170,9 @@ static int bus_i2c_set_bus_speed(struct mxc_i2c_bus *i2c_bus, int speed)
> u8 idx = i2c_clk_div[clk_idx][1];
> int reg_shift = quirk ? VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT;
>
> + if (!base)
> + return -ENODEV;
> +
> /* Store divider value */
> writeb(idx, base + (IFDR << reg_shift));
>
> @@ -351,6 +354,10 @@ static int i2c_init_transfer(struct mxc_i2c_bus *i2c_bus, u8 chip,
> int ret;
> int reg_shift = i2c_bus->driver_data & I2C_QUIRK_FLAG ?
> VF610_I2C_REGSHIFT : IMX_I2C_REGSHIFT;
> +
> + if (!i2c_bus->base)
> + return -ENODEV;
> +
> for (retry = 0; retry < 3; retry++) {
> ret = i2c_init_transfer_(i2c_bus, chip, addr, alen);
> if (ret >= 0)
> @@ -503,38 +510,30 @@ static int bus_i2c_write(struct mxc_i2c_bus *i2c_bus, u8 chip, u32 addr,
> return ret;
> }
>
> -static struct mxc_i2c_bus mxc_i2c_buses[] = {
> -#if defined(CONFIG_MX25)
> - { 0, IMX_I2C_BASE },
> - { 1, IMX_I2C2_BASE },
> - { 2, IMX_I2C3_BASE },
> -#elif defined(CONFIG_MX27)
> - { 0, IMX_I2C1_BASE },
> - { 1, IMX_I2C2_BASE },
> -#elif defined(CONFIG_MX31) || defined(CONFIG_MX35) || \
> - defined(CONFIG_MX51) || defined(CONFIG_MX53) || \
> - defined(CONFIG_MX6)
> - { 0, I2C1_BASE_ADDR },
> - { 1, I2C2_BASE_ADDR },
> - { 2, I2C3_BASE_ADDR },
> -#if defined(CONFIG_MX6DL)
> - { 3, I2C4_BASE_ADDR },
> +#if !defined(I2C2_BASE_ADDR)
> +#define I2C2_BASE_ADDR 0
> #endif
> -#elif defined(CONFIG_LS102XA)
> - { 0, I2C1_BASE_ADDR, I2C_QUIRK_FLAG },
> - { 1, I2C2_BASE_ADDR, I2C_QUIRK_FLAG },
> - { 2, I2C3_BASE_ADDR, I2C_QUIRK_FLAG },
> -#elif defined(CONFIG_VF610)
> - { 0, I2C0_BASE_ADDR, I2C_QUIRK_FLAG },
> -#elif defined(CONFIG_FSL_LSCH3)
> +
> +#if !defined(I2C3_BASE_ADDR)
> +#define I2C3_BASE_ADDR 0
> +#endif
> +
> +#if !defined(I2C4_BASE_ADDR)
> +#define I2C4_BASE_ADDR 0
> +#endif
> +
> +static struct mxc_i2c_bus mxc_i2c_buses[] = {
> +#if defined(CONFIG_LS102XA) || defined(CONFIG_FSL_LSCH3)
> { 0, I2C1_BASE_ADDR, I2C_QUIRK_FLAG },
> { 1, I2C2_BASE_ADDR, I2C_QUIRK_FLAG },
> { 2, I2C3_BASE_ADDR, I2C_QUIRK_FLAG },
> { 3, I2C4_BASE_ADDR, I2C_QUIRK_FLAG },
> #else
> -#error "architecture not supported"
> + { 0, I2C1_BASE_ADDR, 0 },
> + { 1, I2C2_BASE_ADDR, 0 },
> + { 2, I2C3_BASE_ADDR, 0 },
> + { 3, I2C4_BASE_ADDR, 0 },
> #endif
> - { }
> };
>
> struct mxc_i2c_bus *i2c_get_base(struct i2c_adapter *adap)
>
Applied to u-boot-imx, thanks!
Best regards,
Stefano Babic
--
=====================================================================
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de
=====================================================================
More information about the U-Boot
mailing list