From: vaibhav.hiremath@linaro.org (Vaibhav Hiremath)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 02/12] i2c: pxa: No need to set slave addr for i2c master mode reset
Date: Thu, 28 May 2015 18:33:34 +0530 [thread overview]
Message-ID: <1432818224-17070-3-git-send-email-vaibhav.hiremath@linaro.org> (raw)
In-Reply-To: <1432818224-17070-1-git-send-email-vaibhav.hiremath@linaro.org>
From: "Jett.Zhou" <jtzhou@marvell.com>
Normally i2c controller works as master, so slave addr is not needed, or it
will impact some slave device (eg. ST NFC chip) i2c accesses, because it has
the same i2c address with controller.
Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
[vaibhav.hiremath at linaro.org: Updated Changelog]
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
---
drivers/i2c/busses/i2c-pxa.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index f4ac8c5..d4c798a 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -459,8 +459,10 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
writel(I2C_ISR_INIT, _ISR(i2c));
writel(readl(_ICR(i2c)) & ~ICR_UR, _ICR(i2c));
+#ifdef CONFIG_I2C_PXA_SLAVE
if (i2c->reg_isar)
writel(i2c->slave_addr, _ISAR(i2c));
+#endif
/* set control register values */
writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c));
--
1.9.1
next prev parent reply other threads:[~2015-05-28 13:03 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-28 13:03 [PATCH 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 01/12] i2c: pxa: keep i2c irq ON in suspend Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath [this message]
2015-05-29 19:21 ` [PATCH 02/12] i2c: pxa: No need to set slave addr for i2c master mode reset Robert Jarzmik
2015-05-29 19:25 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 03/12] i2c: pxa: Add reset operation when i2c bus busy Vaibhav Hiremath
2015-05-29 19:39 ` Robert Jarzmik
2015-05-29 20:20 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 04/12] i2c: pxa: Add support for pxa910/988 & new configuration features Vaibhav Hiremath
2015-05-29 20:22 ` Robert Jarzmik
2015-05-29 20:33 ` Vaibhav Hiremath
2015-06-04 2:31 ` Yi Zhang
2015-06-04 5:46 ` Vaibhav Hiremath
2015-06-01 0:13 ` Wolfram Sang
2015-06-02 5:01 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 05/12] i2c: pxa: Add bus reset functionality Vaibhav Hiremath
2015-05-29 13:59 ` Rob Herring
2015-05-29 15:40 ` Vaibhav Hiremath
2015-05-29 20:31 ` Robert Jarzmik
2015-06-02 13:12 ` Linus Walleij
2015-06-02 16:40 ` Vaibhav Hiremath
2015-06-03 19:16 ` Vaibhav Hiremath
2015-06-02 17:33 ` Wolfram Sang
2015-06-02 17:40 ` Vaibhav Hiremath
2015-06-02 17:48 ` Wolfram Sang
2015-06-02 17:57 ` Vaibhav Hiremath
2015-06-02 18:02 ` Wolfram Sang
2015-06-02 18:06 ` Vaibhav Hiremath
2015-06-02 18:24 ` Wolfram Sang
2015-06-02 18:46 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 06/12] i2c: pxa: Return I2C_RETRY when timeout in pio mode Vaibhav Hiremath
2015-05-29 20:46 ` Robert Jarzmik
2015-05-29 21:23 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 07/12] i2c: pxa: Reset i2c controller on timeout in interrupt and " Vaibhav Hiremath
2015-05-29 21:13 ` Robert Jarzmik
2015-05-29 21:19 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 08/12] i2c: pxa: enable/disable irq across message xfer Vaibhav Hiremath
2015-05-28 13:17 ` Russell King - ARM Linux
2015-05-28 13:29 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 09/12] i2c: pxa: Remove compile warnning in 64bit mode Vaibhav Hiremath
2015-05-29 21:28 ` Robert Jarzmik
2015-05-28 13:03 ` [PATCH 10/12] i2c: pxa: Update debug function to dump more info on error Vaibhav Hiremath
2015-05-29 21:42 ` Robert Jarzmik
2015-05-29 21:45 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 11/12] i2c:pxa: Use devm_ variants in probe function Vaibhav Hiremath
2015-05-30 15:53 ` Robert Jarzmik
2015-05-31 7:36 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 12/12] i2c: pxa: enable/disable i2c module across msg xfer Vaibhav Hiremath
2015-05-28 13:23 ` Russell King - ARM Linux
2015-06-02 16:52 ` Vaibhav Hiremath
2015-06-02 16:59 ` Vaibhav Hiremath
2015-06-03 10:56 ` Yi Zhang
2015-06-03 18:49 ` Vaibhav Hiremath
2015-06-04 6:29 ` Yi Zhang
2015-06-04 7:19 ` Vaibhav Hiremath
2015-06-04 7:58 ` Yi Zhang
2015-06-01 0:07 ` [PATCH 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Wolfram Sang
2015-06-02 4:58 ` Vaibhav Hiremath
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