Re: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
On Tue, Dec 07, 2010 at 05:14:15AM +0530, Tarun Kanti DebBarma wrote:
Add routines to converts dmtimers to platform devices. The device data
s/converts/convert
is obtained from hwmod database of respective platform and is registered
to device model after successful binding to driver. It also provides
provision to access timers during early boot when pm_runtime framework
is not completely up and running.
Signed-off-by: Tarun Kanti DebBarma tarun.ka...@ti.com
Signed-off-by: Thara Gopinath th...@ti.com
Reviewed-by: Cousson, Benoit b-cous...@ti.com
Reviewed-by: Varadarajan, Charulatha ch...@ti.com
---
arch/arm/mach-omap2/Makefile |2 +-
arch/arm/mach-omap2/dmtimer.c | 174
+
2 files changed, 175 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmtimer.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bc..7700ccd 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -4,7 +4,7 @@
# Common support
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o
\
- common.o
+ common.o dmtimer.o
omap-2-3-common = irq.o sdrc.o prm2xxx_3xxx.o
hwmod-common = omap_hwmod.o \
diff --git a/arch/arm/mach-omap2/dmtimer.c b/arch/arm/mach-omap2/dmtimer.c
new file mode 100644
index 000..b639082
--- /dev/null
+++ b/arch/arm/mach-omap2/dmtimer.c
@@ -0,0 +1,174 @@
+/**
+ * OMAP2PLUS Dual-Mode Timers - platform device registration
+ *
+ * Contains first level initialization routines which extracts timers
+ * information from hwmod database and registers with linux device model.
+ * It also has low level function to change the timer input clock source.
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ * Tarun Kanti DebBarma tarun.ka...@ti.com
+ * Thara Gopinath th...@ti.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed as is WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include linux/clk.h
+#include linux/io.h
not required
+#include linux/err.h
+#include linux/slab.h
+
+#include plat/dmtimer.h
+#include plat/omap_hwmod.h
not required
+#include plat/omap_device.h
+
+static int early_timer_count __initdata = 1;
+
+/**
+ * omap2_dm_timer_set_src - change the timer input clock source
+ * @pdev:timer platform device pointer
+ * @timer_clk: current clock source
+ * @source: array index of parent clock source
+ */
+static int omap2_dm_timer_set_src(struct platform_device *pdev, int source)
+{
+ int ret;
+ struct dmtimer_platform_data *pdata = pdev-dev.platform_data;
+ struct clk *fclk = clk_get(pdev-dev, fck);
+ struct clk *new_fclk;
+ char *fclk_name = 32k_ck; /* default name */
+
+ switch (source) {
+ case OMAP_TIMER_SRC_SYS_CLK:
+ fclk_name = sys_ck;
+ break;
+
+ case OMAP_TIMER_SRC_32_KHZ:
+ fclk_name = 32k_ck;
+ break;
+
+ case OMAP_TIMER_SRC_EXT_CLK:
+ if (pdata-timer_ip_type == OMAP_TIMER_IP_VERSION_1) {
+ fclk_name = alt_ck;
+ break;
+ }
+ dev_dbg(pdev-dev, %s: %d: invalid clk src.\n,
+ __func__, __LINE__);
+ return -EINVAL;
+ }
+
+ if (IS_ERR_OR_NULL(fclk)) {
+ dev_dbg(pdev-dev, %s: %d: clk_get() FAILED\n,
+ __func__, __LINE__);
+ return -EINVAL;
+ }
+
+ new_fclk = clk_get(pdev-dev, fclk_name);
+ if (IS_ERR_OR_NULL(new_fclk)) {
+ dev_dbg(pdev-dev, %s: %d: clk_get() %s FAILED\n,
+ __func__, __LINE__, fclk_name);
+ clk_put(fclk);
+ return -EINVAL;
+ }
+
+ ret = clk_set_parent(fclk, new_fclk);
+ if (IS_ERR_VALUE(ret)) {
+ dev_dbg(pdev-dev, %s: clk_set_parent() to %s FAILED\n,
+ __func__, fclk_name);
+ ret = -EINVAL;
+ }
+
+ clk_put(new_fclk);
+ clk_put(fclk);
+
+ return ret;
+}
+
+struct omap_device_pm_latency omap2_dmtimer_latency[] = {
+ {
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+ },
+};
+
+/**
+ * omap_timer_init - build and register timer device with an
+ * associated timer hwmod
+ * @oh: timer hwmod pointer to be used to build timer device
+ * @user:
RE: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
-Original Message-
From: G, Manjunath Kondaiah
Sent: Monday, December 06, 2010 11:57 PM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; Gopinath, Thara
Subject: Re: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
On Tue, Dec 07, 2010 at 05:14:15AM +0530, Tarun Kanti DebBarma wrote:
Add routines to converts dmtimers to platform devices. The device data
s/converts/convert
is obtained from hwmod database of respective platform and is registered
to device model after successful binding to driver. It also provides
provision to access timers during early boot when pm_runtime framework
is not completely up and running.
Signed-off-by: Tarun Kanti DebBarma tarun.ka...@ti.com
Signed-off-by: Thara Gopinath th...@ti.com
Reviewed-by: Cousson, Benoit b-cous...@ti.com
Reviewed-by: Varadarajan, Charulatha ch...@ti.com
---
arch/arm/mach-omap2/Makefile |2 +-
arch/arm/mach-omap2/dmtimer.c | 174
+
2 files changed, 175 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmtimer.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bc..7700ccd 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -4,7 +4,7 @@
# Common support
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o
pm.o \
-common.o
+common.o dmtimer.o
omap-2-3-common= irq.o sdrc.o prm2xxx_3xxx.o
hwmod-common = omap_hwmod.o \
diff --git a/arch/arm/mach-omap2/dmtimer.c b/arch/arm/mach-
omap2/dmtimer.c
new file mode 100644
index 000..b639082
--- /dev/null
+++ b/arch/arm/mach-omap2/dmtimer.c
@@ -0,0 +1,174 @@
+/**
+ * OMAP2PLUS Dual-Mode Timers - platform device registration
+ *
+ * Contains first level initialization routines which extracts timers
+ * information from hwmod database and registers with linux device
model.
+ * It also has low level function to change the timer input clock
source.
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated -
http://www.ti.com/
+ * Tarun Kanti DebBarma tarun.ka...@ti.com
+ * Thara Gopinath th...@ti.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed as is WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include linux/clk.h
+#include linux/io.h
not required
Ok.
+#include linux/err.h
+#include linux/slab.h
+
+#include plat/dmtimer.h
+#include plat/omap_hwmod.h
not required
Ok.
+#include plat/omap_device.h
+
+static int early_timer_count __initdata = 1;
+
+/**
+ * omap2_dm_timer_set_src - change the timer input clock source
+ * @pdev: timer platform device pointer
+ * @timer_clk: current clock source
+ * @source:array index of parent clock source
+ */
+static int omap2_dm_timer_set_src(struct platform_device *pdev, int
source)
+{
+ int ret;
+ struct dmtimer_platform_data *pdata = pdev-dev.platform_data;
+ struct clk *fclk = clk_get(pdev-dev, fck);
+ struct clk *new_fclk;
+ char *fclk_name = 32k_ck; /* default name */
+
+ switch (source) {
+ case OMAP_TIMER_SRC_SYS_CLK:
+ fclk_name = sys_ck;
+ break;
+
+ case OMAP_TIMER_SRC_32_KHZ:
+ fclk_name = 32k_ck;
+ break;
+
+ case OMAP_TIMER_SRC_EXT_CLK:
+ if (pdata-timer_ip_type == OMAP_TIMER_IP_VERSION_1) {
+ fclk_name = alt_ck;
+ break;
+ }
+ dev_dbg(pdev-dev, %s: %d: invalid clk src.\n,
+ __func__, __LINE__);
+ return -EINVAL;
+ }
+
+ if (IS_ERR_OR_NULL(fclk)) {
+ dev_dbg(pdev-dev, %s: %d: clk_get() FAILED\n,
+ __func__, __LINE__);
+ return -EINVAL;
+ }
+
+ new_fclk = clk_get(pdev-dev, fclk_name);
+ if (IS_ERR_OR_NULL(new_fclk)) {
+ dev_dbg(pdev-dev, %s: %d: clk_get() %s FAILED\n,
+ __func__, __LINE__, fclk_name);
+ clk_put(fclk);
+ return -EINVAL;
+ }
+
+ ret = clk_set_parent(fclk, new_fclk);
+ if (IS_ERR_VALUE(ret)) {
+ dev_dbg(pdev-dev, %s: clk_set_parent() to %s FAILED\n,
+ __func__, fclk_name);
+ ret = -EINVAL;
+ }
+
+ clk_put(new_fclk);
+ clk_put(fclk);
+
+ return ret;
+}
+
+struct omap_device_pm_latency omap2_dmtimer_latency[] = {
+ {
+ .deactivate_func = omap_device_idle_hwmods
Re: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
Tarun,
On Tue, Dec 7, 2010 at 05:14, Tarun Kanti DebBarma tarun.ka...@ti.com wrote:
Add routines to converts dmtimers to platform devices. The device data
is obtained from hwmod database of respective platform and is registered
to device model after successful binding to driver. It also provides
provision to access timers during early boot when pm_runtime framework
is not completely up and running.
Signed-off-by: Tarun Kanti DebBarma tarun.ka...@ti.com
Signed-off-by: Thara Gopinath th...@ti.com
Reviewed-by: Cousson, Benoit b-cous...@ti.com
Reviewed-by: Varadarajan, Charulatha ch...@ti.com
---
arch/arm/mach-omap2/Makefile | 2 +-
arch/arm/mach-omap2/dmtimer.c | 174
+
2 files changed, 175 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmtimer.c
snip
+/**
+ * omap_timer_init - build and register timer device with an
+ * associated timer hwmod
+ * @oh: timer hwmod pointer to be used to build timer device
+ * @user: parameter that can be passed from calling hwmod API
+ *
+ * Called by omap_hwmod_for_each_by_class to register each of the timer
+ * devices present in the system. The number of timer devices is known
+ * by parsing through the hwmod database for a given class name. At the
+ * end of function call memory is allocated for timer device and it is
+ * registered to the framework ready to be proved by the driver.
+ */
+static int __init omap_timer_init(struct omap_hwmod *oh, void *user)
+{
+ int id;
+ int ret = 0;
+ char *name = omap_timer;
+ struct dmtimer_platform_data *pdata;
+ struct omap_device *od;
+
+ pr_debug(%s: %s\n, __func__, oh-name);
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ pr_err(%s: No memory for [%s]\n, __func__, oh-name);
+ return -ENOMEM;
+ }
+
+ if (user)
Check for the value of user.
+ pdata-is_early_init = 1;
+ else
+ pdata-is_early_init = 0;
+
+ /* hook clock set/get functions */
+ pdata-set_timer_src = omap2_dm_timer_set_src;
+
snip
--
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the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
-Original Message-
From: Varadarajan, Charulatha
Sent: Tuesday, December 07, 2010 11:16 AM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; Gopinath, Thara
Subject: Re: [PATCH v5 8/12] OMAP2+: dmtimer: convert to platform devices
Tarun,
On Tue, Dec 7, 2010 at 05:14, Tarun Kanti DebBarma tarun.ka...@ti.com
wrote:
Add routines to converts dmtimers to platform devices. The device data
is obtained from hwmod database of respective platform and is registered
to device model after successful binding to driver. It also provides
provision to access timers during early boot when pm_runtime framework
is not completely up and running.
Signed-off-by: Tarun Kanti DebBarma tarun.ka...@ti.com
Signed-off-by: Thara Gopinath th...@ti.com
Reviewed-by: Cousson, Benoit b-cous...@ti.com
Reviewed-by: Varadarajan, Charulatha ch...@ti.com
---
arch/arm/mach-omap2/Makefile | 2 +-
arch/arm/mach-omap2/dmtimer.c | 174
+
2 files changed, 175 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmtimer.c
snip
+/**
+ * omap_timer_init - build and register timer device with an
+ * associated timer hwmod
+ * @oh: timer hwmod pointer to be used to build timer device
+ * @user: parameter that can be passed from calling hwmod API
+ *
+ * Called by omap_hwmod_for_each_by_class to register each of the timer
+ * devices present in the system. The number of timer devices is known
+ * by parsing through the hwmod database for a given class name. At the
+ * end of function call memory is allocated for timer device and it is
+ * registered to the framework ready to be proved by the driver.
+ */
+static int __init omap_timer_init(struct omap_hwmod *oh, void *user)
+{
+ int id;
+ int ret = 0;
+ char *name = omap_timer;
+ struct dmtimer_platform_data *pdata;
+ struct omap_device *od;
+
+ pr_debug(%s: %s\n, __func__, oh-name);
+
+ pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ pr_err(%s: No memory for [%s]\n, __func__, oh-name);
+ return -ENOMEM;
+ }
+
+ if (user)
Check for the value of user.
Ok.
+ pdata-is_early_init = 1;
+ else
+ pdata-is_early_init = 0;
+
+ /* hook clock set/get functions */
+ pdata-set_timer_src = omap2_dm_timer_set_src;
+
snip
--
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the body of a message to majord...@vger.kernel.org
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