From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Babic Date: Sun, 24 Jun 2012 10:03:44 +0200 Subject: [U-Boot] [PATCH 06/24] mxc_i2c.c: code i2c_probe as a 0 length i2c_write In-Reply-To: <1340338339-11626-6-git-send-email-troy.kisky@boundarydevices.com> References: <1340338339-11626-1-git-send-email-troy.kisky@boundarydevices.com> <1340338339-11626-6-git-send-email-troy.kisky@boundarydevices.com> Message-ID: <4FE6C9E0.4080406@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 22/06/2012 06:12, Troy Kisky wrote: > Signed-off-by: Troy Kisky > --- > 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 Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================