mirror of
https://github.com/AsahiLinux/u-boot
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71204e95ce
1. Introduce a new structure `struct mxc_i2c_bus`, this structure will
used for non-DM and DM.
2. Remove `struct mxc_i2c_regs` structure, but use register offset to access
registers based on `base` entry of `struct mxc_i2c_bus`.
3. Remove most `#ifdef I2C_QUIRK_REG`. Using driver_data to contain platform
flags. A new flag is introduced, I2C_QUIRK_FLAG.
4. Most functions use `struct mxc_i2c_bus` as one of the parameters.
Make most functions common to DM and non-DM, try to avoid duplicated code.
5. Support DM, but pinctrl is not included. Pinmux setting is still set
by setup_i2c, but we do not need bus_i2c_init for DM.
6. struct i2c_parms and struct sram_data are removed.
7. Remove bus_i2c_read bus_i2c_write prototype in header file. The frist
paramter of bus_i2c_init is modified to i2c index. Add new prototype
i2c_idle_bus and force_bus_idle. Since bus_i2c_init is not good for
DM I2C and pinctrl is missed, we use a weak function for i2c_idle_bus.
Board file take the responsibility to implement this function, like this:
"
int i2c_idle_bus(struct mxc_i2c_bus *i2c_bus)
{
if (i2c_bus->index == 0)
force_bus_idle(i2c_pads_info0);
else if (i2c_bus->index == 1)
force_bus_idle(i2c_pads_info1);
else
xxxxxx
}
"
8. Introduce a weak function, enable_i2c_clk
9. Tested on an i.MX7 platform. Log info:
=> dm tree
Class Probed Name
----------------------------------------
root [ + ] root_driver
simple_bus [ ] |-- soc
simple_bus [ ] | |-- aips-bus@30000000
simple_bus [ ] | | |-- anatop@30360000
simple_bus [ ] | | `-- snvs@30370000
simple_bus [ ] | |-- aips-bus@30400000
simple_bus [ ] | `-- aips-bus@30800000
i2c [ ] | |-- i2c@30a20000
i2c [ ] | `-- i2c@30a40000
simple_bus [ ] `-- regulators
=> i2c dev 0
Setting bus to 0
=> i2c probe
Valid chip addresses: 08 50
=> i2c md 8 31
0031: 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08 08
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Acked-by: Simon Glass <sjg@chromium.org>
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| arch-am33xx | ||
| arch-armada100 | ||
| arch-armv7 | ||
| arch-bcm281xx | ||
| arch-bcmcygnus | ||
| arch-bcmnsp | ||
| arch-ep93xx | ||
| arch-exynos | ||
| arch-fsl-lsch3 | ||
| arch-imx | ||
| arch-lpc32xx | ||
| arch-ls102xa | ||
| arch-mvebu | ||
| arch-mx5 | ||
| arch-mx6 | ||
| arch-mx25 | ||
| arch-mx27 | ||
| arch-mx31 | ||
| arch-mx35 | ||
| arch-mxs | ||
| arch-omap3 | ||
| arch-omap4 | ||
| arch-omap5 | ||
| arch-orion5x | ||
| arch-pxa | ||
| arch-rmobile | ||
| arch-s3c24x0 | ||
| arch-s5pc1xx | ||
| arch-sa1100 | ||
| arch-spear | ||
| arch-stm32f4 | ||
| arch-stv0991 | ||
| arch-sunxi | ||
| arch-tegra | ||
| arch-tegra20 | ||
| arch-tegra30 | ||
| arch-tegra114 | ||
| arch-tegra124 | ||
| arch-tegra210 | ||
| arch-u8500 | ||
| arch-vf610 | ||
| arch-zynqmp | ||
| armv8 | ||
| imx-common | ||
| iproc-common | ||
| kona-common | ||
| proc-armv | ||
| ti-common | ||
| armv7.h | ||
| armv7m.h | ||
| assembler.h | ||
| atomic.h | ||
| bitops.h | ||
| bootm.h | ||
| byteorder.h | ||
| cache.h | ||
| config.h | ||
| davinci_rtc.h | ||
| dma-mapping.h | ||
| ehci-omap.h | ||
| emif.h | ||
| errno.h | ||
| fsl_secure_boot.h | ||
| gic.h | ||
| global_data.h | ||
| gpio.h | ||
| hardware.h | ||
| io.h | ||
| linkage.h | ||
| mach-types.h | ||
| macro.h | ||
| memory.h | ||
| omap_boot.h | ||
| omap_common.h | ||
| omap_gpio.h | ||
| omap_mmc.h | ||
| omap_musb.h | ||
| pl310.h | ||
| posix_types.h | ||
| processor.h | ||
| psci.h | ||
| ptrace.h | ||
| sections.h | ||
| secure.h | ||
| setup.h | ||
| spl.h | ||
| string.h | ||
| system.h | ||
| types.h | ||
| u-boot-arm.h | ||
| u-boot.h | ||
| unaligned.h | ||
| utils.h | ||