diff options
| author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2018-12-07 14:50:42 +0100 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2018-12-10 06:11:18 +0100 |
| commit | 5f97ae681428f5623503e3e4b6d8d2c34b76ea3d (patch) | |
| tree | 6f74bd607623586d1ff2ea5b20f4f2218188219f | |
| parent | bca09ce4b044b3a517f18e40902b0a399ffab361 (diff) | |
i2c: omap24xx_i2c: Use platdata to probe the device
This allows the driver to be used without OF_CONTROL.
AM335x support DM_SPL but does not use SPL_OF_CONTROL. Enabling DM_I2C in
SPL thus requires that the omap I2C can be passed platdata.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
| -rw-r--r-- | arch/arm/include/asm/arch-am33xx/i2c.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/omap_i2c.h | 24 | ||||
| -rw-r--r-- | drivers/i2c/omap24xx_i2c.c | 21 |
3 files changed, 37 insertions, 10 deletions
diff --git a/arch/arm/include/asm/arch-am33xx/i2c.h b/arch/arm/include/asm/arch-am33xx/i2c.h index b3cc3dfc9e..c2a98500d9 100644 --- a/arch/arm/include/asm/arch-am33xx/i2c.h +++ b/arch/arm/include/asm/arch-am33xx/i2c.h @@ -6,6 +6,8 @@ #ifndef _I2C_AM33XX_H_ #define _I2C_AM33XX_H_ +#include <asm/omap_i2c.h> + #define I2C_BASE1 0x44E0B000 #define I2C_BASE2 0x4802A000 #define I2C_BASE3 0x4819C000 diff --git a/arch/arm/include/asm/omap_i2c.h b/arch/arm/include/asm/omap_i2c.h new file mode 100644 index 0000000000..c1695cbbee --- /dev/null +++ b/arch/arm/include/asm/omap_i2c.h @@ -0,0 +1,24 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _OMAP_I2C_H +#define _OMAP_I2C_H + +#include <asm/arch/cpu.h> + +#ifdef CONFIG_DM_I2C + +/* Information about a GPIO bank */ +struct omap_i2c_platdata { + ulong base; /* address of registers in physical memory */ + int speed; + int ip_rev; +}; + +#endif + +enum { + OMAP_I2C_REV_V1 = 0, + OMAP_I2C_REV_V2 = 1, +}; + +#endif /* _OMAP_I2C_H */ diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c index 9f716396da..4b93e02bbe 100644 --- a/drivers/i2c/omap24xx_i2c.c +++ b/drivers/i2c/omap24xx_i2c.c @@ -43,6 +43,7 @@ #include <i2c.h> #include <asm/io.h> +#include <asm/omap_i2c.h> /* * Provide access to architecture-specific I2C header files for platforms @@ -62,11 +63,6 @@ #define I2C_WAIT 200 enum { - OMAP_I2C_REV_V1 = 0, - OMAP_I2C_REV_V2 = 1, -}; - -enum { OMAP_I2C_REV_REG = 0, /* Only on IP V1 (OMAP34XX) */ OMAP_I2C_IE_REG, /* Only on IP V1 (OMAP34XX) */ OMAP_I2C_STAT_REG, @@ -1051,8 +1047,12 @@ static int omap_i2c_probe_chip(struct udevice *bus, uint chip_addr, static int omap_i2c_probe(struct udevice *bus) { struct omap_i2c *priv = dev_get_priv(bus); + struct omap_i2c_platdata *plat = dev_get_platdata(bus); - priv->ip_rev = dev_get_driver_data(bus); + priv->speed = plat->speed; + priv->regs = map_physmem(plat->base, sizeof(void *), + MAP_NOCACHE); + priv->ip_rev = plat->ip_rev; __omap24_i2c_init(priv->regs, priv->ip_rev, priv->speed, 0, &priv->waitdelay); @@ -1063,11 +1063,11 @@ static int omap_i2c_probe(struct udevice *bus) #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) static int omap_i2c_ofdata_to_platdata(struct udevice *bus) { - struct omap_i2c *priv = dev_get_priv(bus); + struct omap_i2c_platdata *plat = dev_get_platdata(bus); - priv->regs = map_physmem(devfdt_get_addr(bus), sizeof(void *), - MAP_NOCACHE); - priv->speed = CONFIG_SYS_OMAP24_I2C_SPEED; + plat->base = devfdt_get_addr(bus); + plat->speed = dev_read_u32_default(bus, "clock-frequency", 100000); + plat->ip_rev = dev_get_driver_data(bus); return 0; } @@ -1091,6 +1091,7 @@ U_BOOT_DRIVER(i2c_omap) = { #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) .of_match = omap_i2c_ids, .ofdata_to_platdata = omap_i2c_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct omap_i2c_platdata), #endif .probe = omap_i2c_probe, .priv_auto_alloc_size = sizeof(struct omap_i2c), |