From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 3/5] i2c: at91: add support for new alternative command mode
Date: Mon, 1 Jun 2015 19:51:54 +0200 [thread overview]
Message-ID: <20150601175154.GN4710@piout.net> (raw)
In-Reply-To: <82c39f262f553a43ea9208b4f9804bbf26a62d90.1433173031.git.cyrille.pitchen@atmel.com>
Hi,
On 01/06/2015 at 17:49:13 +0200, Cyrille Pitchen wrote :
> @@ -504,8 +589,22 @@ static int at91_twi_xfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num)
> at91_twi_write(dev, AT91_TWI_IADR, internal_address);
> }
>
> - at91_twi_write(dev, AT91_TWI_MMR, (m_start->addr << 16) | int_addr_flag
> - | ((m_start->flags & I2C_M_RD) ? AT91_TWI_MREAD : 0));
> + is_read = (m_start->flags & I2C_M_RD);
> + if (dev->pdata->has_alt_cmd) {
> + if (m_start->len > 0) {
> + at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_ACMEN);
> + at91_twi_write(dev, AT91_TWI_ACR,
> + AT91_TWI_ACR_DATAL(m_start->len) |
> + ((is_read) ? AT91_TWI_ACR_DIR : 0));
> + use_alt_cmd = true;
> + } else
> + at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_ACMDIS);
braces {} should be used on all arms of this statement
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-06-01 17:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-01 15:49 [PATCH v2 0/5] i2c: at91: add support to FIFOs and alternative command Cyrille Pitchen
2015-06-01 15:49 ` [PATCH v2 1/5] i2c: at91: use BIT() macro to define register bits Cyrille Pitchen
2015-06-01 15:49 ` [PATCH v2 2/5] i2c: at91: update documentation for DT bindings Cyrille Pitchen
2015-06-01 15:49 ` [PATCH v2 3/5] i2c: at91: add support for new alternative command mode Cyrille Pitchen
2015-06-01 17:51 ` Alexandre Belloni [this message]
2015-06-01 15:49 ` [PATCH v2 4/5] i2c: at91: print hardware version Cyrille Pitchen
2015-06-01 15:49 ` [PATCH v2 5/5] i2c: at91: add support to FIFOs Cyrille Pitchen
2015-06-02 8:18 ` [PATCH v2 0/5] i2c: at91: add support to FIFOs and alternative command Ludovic Desroches
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