[U-Boot] [PATCH 04/24] dm: i2c: Implement 'i2c bus' command for driver model

[Heiko Schocher <hs@denx.de>]

Hello Simon,

Am 04.05.2015 19:30, schrieb Simon Glass:
> This command was missed in the conversion. Add it back for driver model.
>
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
>
>   common/cmd_i2c.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++-------
>   1 file changed, 55 insertions(+), 8 deletions(-)
>
> diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
> index ad38cbf..1bc0db8 100644
> --- a/common/cmd_i2c.c
> +++ b/common/cmd_i2c.c
> @@ -1623,6 +1623,27 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
>   }
>   #endif /* CONFIG_I2C_EDID */
>
> +#ifdef CONFIG_DM_I2C
> +static void show_bus(struct udevice *bus)
> +{
> +	struct udevice *dev;
> +
> +	printf("Bus %d:\t%s", bus->req_seq, bus->name);
> +	if (device_active(bus))
> +		printf("  (active %d)", bus->seq);
> +	printf("\n");
> +	for (device_find_first_child(bus, &dev);
> +	     dev;
> +	     device_find_next_child(&dev)) {
> +		struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
> +
> +		printf("   %02x: %s, offset len %x, flags %x\n",
> +		       chip->chip_addr, dev->name, chip->offset_len,
> +		       chip->flags);
> +	}
> +}
> +#endif
> +
>   /**
>    * do_i2c_show_bus() - Handle the "i2c bus" command-line command
>    * @cmdtp:	Command data struct pointer
> @@ -1632,20 +1653,30 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
>    *
>    * Returns zero always.
>    */
> -#if defined(CONFIG_SYS_I2C)
> +#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
>   static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc,
>   				char * const argv[])
>   {
> -	int	i;
> -#ifndef CONFIG_SYS_I2C_DIRECT_BUS
> -	int	j;
> -#endif
> -
>   	if (argc == 1) {
>   		/* show all busses */
> +#ifdef CONFIG_DM_I2C
> +		struct udevice *bus;
> +		struct uclass *uc;
> +		int ret;
> +
> +		ret = uclass_get(UCLASS_I2C, &uc);
> +		if (ret)
> +			return CMD_RET_FAILURE;
> +		uclass_foreach_dev(bus, uc)
> +			show_bus(bus);
> +#else
> +		int i;
> +
>   		for (i = 0; i < CONFIG_SYS_NUM_I2C_BUSES; i++) {
>   			printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name);
>   #ifndef CONFIG_SYS_I2C_DIRECT_BUS
> +			int j;
> +

I thought this drops an error, because var j is declared in the middle of
code, but just tried it with gcc 4.7.2 and gcc 4.8.1 vor the mgcoge board,
drops no warning, so:

Acked-by: Heiko Schocher <hs@denx.de>

Thanks!

bye,
Heiko
>   			for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
>   				if (i2c_bus[i].next_hop[j].chip == 0)
>   					break;
> @@ -1657,15 +1688,30 @@ static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc,
>   #endif
>   			printf("\n");
>   		}
> +#endif
>   	} else {
> +		int i;
> +
>   		/* show specific bus */
>   		i = simple_strtoul(argv[1], NULL, 10);
> +#ifdef CONFIG_DM_I2C
> +		struct udevice *bus;
> +		int ret;
> +
> +		ret = uclass_get_device_by_seq(UCLASS_I2C, i, &bus);
> +		if (ret) {
> +			printf("Invalid bus %d: err=%d\n", i, ret);
> +			return CMD_RET_FAILURE;
> +		}
> +		show_bus(bus);
> +#else
>   		if (i >= CONFIG_SYS_NUM_I2C_BUSES) {
>   			printf("Invalid bus %d\n", i);
>   			return -1;
>   		}
>   		printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name);
>   #ifndef CONFIG_SYS_I2C_DIRECT_BUS
> +			int j;
>   			for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
>   				if (i2c_bus[i].next_hop[j].chip == 0)
>   					break;
> @@ -1676,6 +1722,7 @@ static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc,
>   			}
>   #endif
>   		printf("\n");
> +#endif
>   	}
>
>   	return 0;
> @@ -1835,7 +1882,7 @@ static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv
>   }
>
>   static cmd_tbl_t cmd_i2c_sub[] = {
> -#if defined(CONFIG_SYS_I2C)
> +#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
>   	U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_show_bus, "", ""),
>   #endif
>   	U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""),
> @@ -1902,7 +1949,7 @@ static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
>   /***************************************************/
>   #ifdef CONFIG_SYS_LONGHELP
>   static char i2c_help_text[] =
> -#if defined(CONFIG_SYS_I2C)
> +#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
>   	"bus [muxtype:muxaddr:muxchannel] - show I2C bus info\n"
>   #endif
>   	"crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
>

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany