From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 06/24] mxc_i2c.c: code i2c_probe as a 0 length i2c_write
Date: Sun, 24 Jun 2012 10:03:44 +0200 [thread overview]
Message-ID: <4FE6C9E0.4080406@denx.de> (raw)
In-Reply-To: <1340338339-11626-6-git-send-email-troy.kisky@boundarydevices.com>
On 22/06/2012 06:12, Troy Kisky wrote:
> Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
> ---
> drivers/i2c/mxc_i2c.c | 29 ++++++++---------------------
> 1 file changed, 8 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/i2c/mxc_i2c.c b/drivers/i2c/mxc_i2c.c
> index 626960d..4f12b9e 100644
> --- a/drivers/i2c/mxc_i2c.c
> +++ b/drivers/i2c/mxc_i2c.c
> @@ -302,27 +302,6 @@ exit:
> }
>
> /*
> - * Try if a chip add given address responds (probe the chip)
> - */
> -int i2c_probe(uchar chip)
> -{
> - struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)I2C_BASE;
> - int ret;
> -
> - ret = i2c_imx_start();
> - if (ret)
> - return ret;
> -
> - ret = tx_byte(i2c_regs, chip << 1);
> - if (ret)
> - return ret;
> -
> - i2c_imx_stop();
> -
> - return ret;
> -}
> -
> -/*
> * Read data from I2C device
> */
> int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
> @@ -404,3 +383,11 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
>
> return ret;
> }
> +
> +/*
> + * Try if a chip add given address responds (probe the chip)
> + */
> +int i2c_probe(uchar chip)
> +{
> + return i2c_write(chip, 0, 0, NULL, 0);
> +}
>
Acked-by: Stefano Babic <sbabic@denx.de>
Best regards,
Stefano Babic
--
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next prev parent reply other threads:[~2012-06-24 8:03 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-22 4:11 [U-Boot] [PATCH 01/24] mxc_i2c: fix i2c_imx_stop Troy Kisky
2012-06-22 4:11 ` [U-Boot] [PATCH 02/24] mxc_i2c: remove ifdef of CONFIG_HARD_I2C Troy Kisky
2012-06-22 16:55 ` Marek Vasut
2012-06-22 4:11 ` [U-Boot] [PATCH 03/24] mxc_i2c: create tx_byte function Troy Kisky
2012-06-22 16:58 ` Marek Vasut
2012-06-22 23:05 ` Troy Kisky
2012-06-23 1:51 ` Marek Vasut
2012-06-22 4:11 ` [U-Boot] [PATCH 04/24] mxc_i2c: clear i2sr before waiting for bit Troy Kisky
2012-06-22 16:59 ` Marek Vasut
2012-06-24 0:18 ` Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 05/24] mxc_i2c: create i2c_init_transfer Troy Kisky
2012-06-22 16:59 ` Marek Vasut
2012-06-24 8:06 ` Stefano Babic
2012-06-22 4:12 ` [U-Boot] [PATCH 06/24] mxc_i2c.c: code i2c_probe as a 0 length i2c_write Troy Kisky
2012-06-22 17:00 ` Marek Vasut
2012-06-24 8:03 ` Stefano Babic [this message]
2012-06-22 4:12 ` [U-Boot] [PATCH 07/24] mxc_i2c: combine i2c_imx_bus_busy and i2c_imx_trx_complete into wait_for_sr_state Troy Kisky
2012-06-22 17:01 ` Marek Vasut
2012-06-22 17:34 ` Troy Kisky
2012-06-22 18:01 ` Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 08/24] mxc_i2c: remove redundant read Troy Kisky
2012-06-22 17:02 ` Marek Vasut
2012-06-22 4:12 ` [U-Boot] [PATCH 09/24] mxc_i2c: place imx_start code inline Troy Kisky
2012-06-22 17:02 ` Marek Vasut
2012-06-22 4:12 ` [U-Boot] [PATCH 10/24] mxc_i2c: place i2c_reset " Troy Kisky
2012-06-22 17:03 ` Marek Vasut
2012-06-22 4:12 ` [U-Boot] [PATCH 11/24] mxc_i2c: don't disable controller after every transaction Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 12/24] mxc_i2c: change slave addr if conflicts with destination Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 13/24] mxc_i2c: check for arbitration lost Troy Kisky
2012-06-22 17:04 ` Marek Vasut
2012-06-22 4:12 ` [U-Boot] [PATCH 14/24] mxc_i2c: add retries Troy Kisky
2012-06-22 17:06 ` Marek Vasut
2012-06-22 17:40 ` Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 15/24] mxc_i2c: add i2c_regs argument to i2c_imx_stop Troy Kisky
2012-06-22 17:06 ` Marek Vasut
2012-06-22 4:12 ` [U-Boot] [PATCH 16/24] mxc_i2c: prep work for multiple busses support Troy Kisky
2012-06-22 17:08 ` Marek Vasut
2012-06-24 8:47 ` Heiko Schocher
2012-06-24 20:08 ` Marek Vasut
2012-06-24 22:09 ` Wolfgang Denk
2012-06-22 4:12 ` [U-Boot] [PATCH 17/24] mxc_i2c: add bus recovery support Troy Kisky
2012-06-24 8:51 ` Heiko Schocher
2012-06-26 3:42 ` Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 18/24] mxc_i2c.c: finish adding CONFIG_I2C_MULTI_BUS support Troy Kisky
2012-06-22 17:09 ` Marek Vasut
2012-06-22 19:41 ` Troy Kisky
2012-06-25 3:34 ` Tabi Timur-B04825
2012-06-22 4:12 ` [U-Boot] [PATCH 19/24] iomux-v3: remove include of mx6x_pins.h Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 20/24] i.mx: iomux-v3.h: move to imx-common include directory Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 21/24] i.mx: iomux-v3.c: move to imx-common directory Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 22/24] i.mx53: add definition for I2C3_BASE_ADDR Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 23/24] imx-common: add i2c.c for bus recovery support Troy Kisky
2012-06-22 4:12 ` [U-Boot] [PATCH 24/24] mx6qsabrelite: add i2c multi-bus support Troy Kisky
2012-06-22 16:55 ` [U-Boot] [PATCH 01/24] mxc_i2c: fix i2c_imx_stop Marek Vasut
2012-06-24 7:49 ` Stefano Babic
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