This adds platform configurations to support founr i2c controllers found on early MOP500 platform
Signed-off-by: srinidhi kasagar <[email protected]> Acked-by: Andrea Gallo <[email protected]> --- arch/arm/mach-ux500/board-mop500.c | 75 ++++++++++++++++++++++++++++++++++++ 1 files changed, 75 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index aa5afbc..e4f6dac 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -22,6 +22,7 @@ #include <asm/mach/arch.h> #include <plat/mtu.h> +#include <plat/i2c.h> #include <mach/hardware.h> #include <mach/setup.h> @@ -108,6 +109,70 @@ static struct amba_device pl022_device = { .periphid = SSP_PER_ID, }; +#define U8500_I2C_RESOURCES(id, size) \ +static struct resource u8500_i2c_resources_##id[] = { \ + [0] = { \ + .start = U8500_I2C##id##_BASE, \ + .end = U8500_I2C##id##_BASE + size - 1, \ + .flags = IORESOURCE_MEM, \ + }, \ + [1] = { \ + .start = IRQ_I2C##id, \ + .end = IRQ_I2C##id, \ + .flags = IORESOURCE_IRQ \ + } \ +} + +U8500_I2C_RESOURCES(0, SZ_4K); +U8500_I2C_RESOURCES(1, SZ_4K); +U8500_I2C_RESOURCES(2, SZ_4K); +U8500_I2C_RESOURCES(3, SZ_4K); + +#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \ +static struct nmk_i2c_controller u8500_i2c_##id = { \ + /* \ + * slave data setup time, which is \ + * 250 ns,100ns,10ns which is 14,6,2 \ + * respectively for a 48 Mhz \ + * i2c clock \ + */ \ + .slsu = _slsu, \ + /* Tx FIFO threshold */ \ + .tft = _tft, \ + /* Rx FIFO threshold */ \ + .rft = _rft, \ + /* std. mode operation */ \ + .clk_freq = clk, \ + .sm = _sm, \ +} + +/* + * The board uses 4 i2c controllers, initialize all of + * them with slave data setup time of 250 ns, + * Tx & Rx FIFO threshold values as 1 and standard + * mode of operation + */ +U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); +U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); +U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); +U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD); + +#define U8500_I2C_PDEVICE(cid) \ +static struct platform_device i2c_controller##cid = { \ + .name = "nmk-i2c", \ + .id = cid, \ + .num_resources = 2, \ + .resource = u8500_i2c_resources_##cid, \ + .dev = { \ + .platform_data = &u8500_i2c_##cid \ + } \ +} + +U8500_I2C_PDEVICE(0); +U8500_I2C_PDEVICE(1); +U8500_I2C_PDEVICE(2); +U8500_I2C_PDEVICE(3); + static struct amba_device *amba_devs[] __initdata = { &uart0_device, &uart1_device, @@ -115,6 +180,14 @@ static struct amba_device *amba_devs[] __initdata = { &pl022_device, }; +/* add any platform devices here - TODO */ +static struct platform_device *platform_devs[] __initdata = { + &i2c_controller0, + &i2c_controller1, + &i2c_controller2, + &i2c_controller3, +}; + static void __init u8500_timer_init(void) { #ifdef CONFIG_LOCAL_TIMERS @@ -139,6 +212,8 @@ static void __init u8500_init_machine(void) for (i = 0; i < ARRAY_SIZE(amba_devs); i++) amba_device_register(amba_devs[i], &iomem_resource); + platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); + spi_register_board_info(u8500_spi_devices, ARRAY_SIZE(u8500_spi_devices)); -- 1.6.3.GIT -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
