From: vaibhav.hiremath@linaro.org (Vaibhav Hiremath)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH-RESEND 3/3] i2c: pxa: Add pin ctrl support for CP core access
Date: Wed, 3 Jun 2015 00:15:31 +0530 [thread overview]
Message-ID: <1433270731-23790-4-git-send-email-vaibhav.hiremath@linaro.org> (raw)
In-Reply-To: <1433270731-23790-1-git-send-email-vaibhav.hiremath@linaro.org>
PMIC TWSI pins configuration for AP and CP is different on
eden, it need to be set to function 0 when AP get RIPC lock.
When AP release RIPC lock, it also need configure twsi pins
to other state, otherwise pinctrl will assume pins configration
is not changed even if it is changed by CP, so it will not
change twsi pins configuration to AP state when AP get RIPC
next time.
Signed-off-by: Shouming Wang <wangshm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
---
drivers/i2c/busses/i2c-pxa.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index eb26eb1..1340de1 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -184,6 +184,7 @@ struct pxa_i2c {
struct pinctrl *pinctrl;
struct pinctrl_state *pin_i2c;
struct pinctrl_state *pin_gpio;
+ struct pinctrl_state *pin_i2c_cp;
};
#define _IBMR(i2c) ((i2c)->reg_ibmr)
@@ -405,6 +406,10 @@ void mmp_hwlock_lock(struct i2c_adapter *adap)
ripc_status = true;
spin_unlock_irqrestore(&lock_for_ripc, flags);
+
+ if (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c) < 0)
+ dev_err(&i2c->adap.dev, "could not set i2c AP pins\n");
+
}
void mmp_hwlock_unlock(struct i2c_adapter *adap)
@@ -413,6 +418,9 @@ void mmp_hwlock_unlock(struct i2c_adapter *adap)
struct pxa_i2c *i2c = adap->algo_data;
+ if (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c_cp) < 0)
+ dev_err(&i2c->adap.dev, "could not set i2c CP pins\n");
+
spin_lock_irqsave(&lock_for_ripc, flags);
__raw_writel(1, i2c->hwlock_addr);
ripc_status = false;
@@ -430,6 +438,9 @@ int mmp_hwlock_trylock(struct i2c_adapter *adap)
ripc_status = !__raw_readl(i2c->hwlock_addr);
spin_unlock_irqrestore(&lock_for_ripc, flags);
+ if (ripc_status && (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c) < 0))
+ dev_err(&i2c->adap.dev, "could not set i2c AP pins\n");
+
return ripc_status;
}
@@ -1497,8 +1508,14 @@ static int i2c_pxa_probe(struct platform_device *dev)
ret = IS_ERR(i2c->pin_gpio);
}
+ /* pin ctrl for CP - optional */
+ i2c->pin_i2c_cp = pinctrl_lookup_state(i2c->pinctrl, "i2c_cp");
+ if (IS_ERR(i2c->pin_i2c_cp))
+ dev_err(&dev->dev, "could not get i2c_cp pinstate\n");
+
if (ret) {
i2c->pin_i2c = NULL;
+ i2c->pin_i2c_cp = NULL;
i2c->pin_gpio = NULL;
i2c->pinctrl = NULL;
ret = 0;
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Vaibhav Hiremath <vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
To: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org,
Vaibhav Hiremath
<vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
Shouming Wang <wangshm-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Haojian Zhuang
<haojian.zhuang-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Subject: [PATCH-RESEND 3/3] i2c: pxa: Add pin ctrl support for CP core access
Date: Wed, 3 Jun 2015 00:15:31 +0530 [thread overview]
Message-ID: <1433270731-23790-4-git-send-email-vaibhav.hiremath@linaro.org> (raw)
In-Reply-To: <1433270731-23790-1-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
PMIC TWSI pins configuration for AP and CP is different on
eden, it need to be set to function 0 when AP get RIPC lock.
When AP release RIPC lock, it also need configure twsi pins
to other state, otherwise pinctrl will assume pins configration
is not changed even if it is changed by CP, so it will not
change twsi pins configuration to AP state when AP get RIPC
next time.
Signed-off-by: Shouming Wang <wangshm-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
drivers/i2c/busses/i2c-pxa.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index eb26eb1..1340de1 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -184,6 +184,7 @@ struct pxa_i2c {
struct pinctrl *pinctrl;
struct pinctrl_state *pin_i2c;
struct pinctrl_state *pin_gpio;
+ struct pinctrl_state *pin_i2c_cp;
};
#define _IBMR(i2c) ((i2c)->reg_ibmr)
@@ -405,6 +406,10 @@ void mmp_hwlock_lock(struct i2c_adapter *adap)
ripc_status = true;
spin_unlock_irqrestore(&lock_for_ripc, flags);
+
+ if (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c) < 0)
+ dev_err(&i2c->adap.dev, "could not set i2c AP pins\n");
+
}
void mmp_hwlock_unlock(struct i2c_adapter *adap)
@@ -413,6 +418,9 @@ void mmp_hwlock_unlock(struct i2c_adapter *adap)
struct pxa_i2c *i2c = adap->algo_data;
+ if (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c_cp) < 0)
+ dev_err(&i2c->adap.dev, "could not set i2c CP pins\n");
+
spin_lock_irqsave(&lock_for_ripc, flags);
__raw_writel(1, i2c->hwlock_addr);
ripc_status = false;
@@ -430,6 +438,9 @@ int mmp_hwlock_trylock(struct i2c_adapter *adap)
ripc_status = !__raw_readl(i2c->hwlock_addr);
spin_unlock_irqrestore(&lock_for_ripc, flags);
+ if (ripc_status && (pinctrl_select_state(i2c->pinctrl, i2c->pin_i2c) < 0))
+ dev_err(&i2c->adap.dev, "could not set i2c AP pins\n");
+
return ripc_status;
}
@@ -1497,8 +1508,14 @@ static int i2c_pxa_probe(struct platform_device *dev)
ret = IS_ERR(i2c->pin_gpio);
}
+ /* pin ctrl for CP - optional */
+ i2c->pin_i2c_cp = pinctrl_lookup_state(i2c->pinctrl, "i2c_cp");
+ if (IS_ERR(i2c->pin_i2c_cp))
+ dev_err(&dev->dev, "could not get i2c_cp pinstate\n");
+
if (ret) {
i2c->pin_i2c = NULL;
+ i2c->pin_i2c_cp = NULL;
i2c->pin_gpio = NULL;
i2c->pinctrl = NULL;
ret = 0;
--
1.9.1
next prev parent reply other threads:[~2015-06-02 18:45 UTC|newest]
Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <vaibhav.hiremath@linaro.org>
2015-06-02 18:45 ` [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock Vaibhav Hiremath
2015-06-02 18:45 ` Vaibhav Hiremath
2015-06-02 18:45 ` [PATCH-RESEND 1/3] i2c: core: append hardware lock with bus lock Vaibhav Hiremath
2015-06-02 18:45 ` Vaibhav Hiremath
2015-06-02 18:45 ` [PATCH-RESEND 2/3] i2c: pxa: Add support for hardware lock Vaibhav Hiremath
2015-06-02 18:45 ` Vaibhav Hiremath
2015-06-02 18:45 ` Vaibhav Hiremath [this message]
2015-06-02 18:45 ` [PATCH-RESEND 3/3] i2c: pxa: Add pin ctrl support for CP core access Vaibhav Hiremath
2015-06-16 8:28 ` [PATCH-RESEND 0/3] i2c: core/pxa: Add support for hardware lock Vaibhav Hiremath
2015-06-16 8:28 ` Vaibhav Hiremath
2015-07-07 6:43 ` Vaibhav Hiremath
2015-07-07 6:43 ` Vaibhav Hiremath
2015-10-25 9:52 ` Wolfram Sang
2015-10-25 9:52 ` Wolfram Sang
2015-06-15 15:49 ` [PATCH-V2 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 01/12] i2c: pxa: keep i2c irq ON in suspend Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 02/12] i2c: pxa: No need to set slave addr for i2c master mode reset Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-07-03 20:58 ` Robert Jarzmik
2015-07-03 20:58 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 03/12] i2c: pxa: Return I2C_RETRY when timeout in pio mode Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-16 5:31 ` Shubhrajyoti Datta
2015-06-16 5:31 ` Shubhrajyoti Datta
2015-06-16 7:41 ` Vaibhav Hiremath
2015-06-16 7:41 ` Vaibhav Hiremath
2015-07-03 21:07 ` Robert Jarzmik
2015-07-03 21:07 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 04/12] i2c: pxa: Reset i2c controller on timeout in interrupt and " Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-07-03 15:27 ` Robert Jarzmik
2015-07-03 15:27 ` Robert Jarzmik
2015-07-03 18:13 ` Vaibhav Hiremath
2015-07-03 18:13 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 05/12] i2c: pxa: Remove compile warnning in 64bit mode Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 06/12] i2c: pxa: Update debug function to dump more info on error Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 07/12] i2c:pxa: Use devm_ variants in probe function Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 18:14 ` Vaibhav Hiremath
2015-07-03 18:14 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 08/12] i2c: pxa: enable/disable i2c module across msg xfer Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 18:23 ` Vaibhav Hiremath
2015-07-03 18:23 ` Vaibhav Hiremath
2015-07-03 18:48 ` Vaibhav Hiremath
2015-07-03 18:48 ` Vaibhav Hiremath
2015-07-03 19:44 ` Robert Jarzmik
2015-07-03 19:44 ` Robert Jarzmik
2015-06-15 15:49 ` [PATCH-V2 09/12] Documentation: binding: add new property 'disable_after_xfer' to i2c-pxa Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 10/12] i2c: pxa: Add support for pxa910/988 & new configuration features Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 11/12] i2c: pxa: Add ILCR (tLow & tHigh) configuration support Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 15:28 ` Robert Jarzmik
2015-07-03 18:17 ` Vaibhav Hiremath
2015-07-03 18:17 ` Vaibhav Hiremath
2015-06-15 15:49 ` [PATCH-V2 12/12] Documentation: binding: add sclk adjustment properties to i2c-pxa Vaibhav Hiremath
2015-06-15 15:49 ` Vaibhav Hiremath
2015-06-16 13:22 ` Rob Herring
2015-06-16 13:22 ` Rob Herring
2015-06-16 14:25 ` Vaibhav Hiremath
2015-06-16 14:25 ` Vaibhav Hiremath
2015-06-29 8:52 ` [PATCH-V2 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
2015-06-29 8:52 ` Vaibhav Hiremath
2015-07-02 16:54 ` Vaibhav Hiremath
2015-07-02 16:54 ` Vaibhav Hiremath
2015-06-17 18:58 [PATCH-v2 0/3] mfd: 88pm800: Add Device tree support Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [rtc-linux] " Vaibhav Hiremath
2015-06-17 18:58 ` [PATCH-v2 1/3] mfd: 88pm800: Add device " Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [rtc-linux] " Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [PATCH-v2] rtc: 88pm80x: add " Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [rtc-linux] " Vaibhav Hiremath
2015-06-20 0:43 ` Alexandre Belloni
2015-06-20 0:43 ` Alexandre Belloni
2015-06-20 0:43 ` Alexandre Belloni
2015-06-20 0:43 ` Alexandre Belloni
2015-06-25 7:46 ` Vaibhav Hiremath
2015-06-25 7:46 ` Vaibhav Hiremath
2015-06-25 7:46 ` Vaibhav Hiremath
2015-06-25 7:46 ` Vaibhav Hiremath
2015-07-07 6:37 ` Vaibhav Hiremath
2015-07-07 6:37 ` Vaibhav Hiremath
2015-07-07 6:37 ` Vaibhav Hiremath
2015-07-07 6:37 ` Vaibhav Hiremath
2015-06-17 18:58 ` [PATCH-v2 2/3] mfd: 88pm800: Allow configuration of interrupt clear method Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [rtc-linux] " Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [PATCH-v2 3/3] mfd: devicetree: bindings: Add new 88pm800 mfd binding Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-17 18:58 ` [rtc-linux] " Vaibhav Hiremath
2015-06-17 18:58 ` Vaibhav Hiremath
2015-06-23 15:37 ` Rob Herring
2015-06-23 15:37 ` Rob Herring
2015-06-23 15:37 ` [rtc-linux] " Rob Herring
2015-06-23 15:37 ` Rob Herring
2015-06-23 17:02 ` Vaibhav Hiremath
2015-06-23 17:02 ` Vaibhav Hiremath
2015-06-23 17:02 ` [rtc-linux] " Vaibhav Hiremath
2015-06-24 0:29 ` Krzysztof Kozlowski
2015-06-24 0:29 ` Krzysztof Kozlowski
2015-06-24 0:29 ` [rtc-linux] " Krzysztof Kozlowski
2015-06-24 0:29 ` Krzysztof Kozlowski
2015-06-24 5:19 ` Vaibhav Hiremath
2015-06-24 5:19 ` Vaibhav Hiremath
2015-06-24 5:19 ` [rtc-linux] " Vaibhav Hiremath
2015-06-24 5:19 ` Vaibhav Hiremath
2015-06-23 5:07 ` [PATCH-v2 0/3] mfd: 88pm800: Add Device tree support Vaibhav Hiremath
2015-06-23 5:07 ` Vaibhav Hiremath
2015-06-23 5:07 ` [rtc-linux] " Vaibhav Hiremath
2015-06-23 5:07 ` Vaibhav Hiremath
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