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Message-ID: <20120917202943.GV4521@atomide.com>
Date: Mon, 17 Sep 2012 13:29:44 -0700
From: Tony Lindgren <tony@...mide.com>
To: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-omap@...r.kernel.org
Cc: Fengguang Wu <fengguang.wu@...el.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Paul Walmsley <paul@...an.com>,
Samuel Ortiz <sameo@...ux.intel.com>,
Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
Felipe Balbi <balbi@...com>
Subject: [PATCH] mfd: Fix compile for twl-core.c by removing cpu_is_omap
usage
Commit 7d7e1eba (ARM: OMAP2+: Prepare for irqs.h removal) broke
compile for non-omap as include plat/cpu.h was added:
drivers/mfd/twl-core.c:49:22: fatal error: plat/cpu.h: No such file or directory
This header was indirectly included earlier when SPARSE_IRQ was not
set, but does not exist on most platforms.
Fix the problem by removing the cpu_is_omap usage that should
not exist in drivers at all. We can do this by adding proper
clock aliases for the twl-core.c drivers, and drop separate
handling for cases when clock framework is not available as
the behaviour will stay the same.
Note that we need to add a platform device to avoid using the
i2c provided names that may be different on various omaps.
Reported-by: Fengguang Wu <fengguang.wu@...el.com>
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Paul Walmsley <paul@...an.com>
Cc: Samuel Ortiz <sameo@...ux.intel.com>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Olof Johansson <olof@...om.net>
Signed-off-by: Tony Lindgren <tony@...mide.com>
---
Samuel, I'd like to queue this via arm-soc as that's where I have
the breaking patch is if this patch is OK with you.
--- a/arch/arm/mach-omap2/clock2430_data.c
+++ b/arch/arm/mach-omap2/clock2430_data.c
@@ -1856,6 +1856,7 @@ static struct omap_clk omap2430_clks[] = {
CLK(NULL, "func_32k_ck", &func_32k_ck, CK_243X),
CLK(NULL, "secure_32k_ck", &secure_32k_ck, CK_243X),
CLK(NULL, "osc_ck", &osc_ck, CK_243X),
+ CLK("twl", "fck", &osc_ck, CK_243X),
CLK(NULL, "sys_ck", &sys_ck, CK_243X),
CLK(NULL, "alt_ck", &alt_ck, CK_243X),
CLK(NULL, "mcbsp_clks", &mcbsp_clks, CK_243X),
--- a/arch/arm/mach-omap2/clock3xxx_data.c
+++ b/arch/arm/mach-omap2/clock3xxx_data.c
@@ -3226,6 +3226,7 @@ static struct omap_clk omap3xxx_clks[] = {
CLK(NULL, "virt_26000000_ck", &virt_26000000_ck, CK_3XXX),
CLK(NULL, "virt_38_4m_ck", &virt_38_4m_ck, CK_3XXX),
CLK(NULL, "osc_sys_ck", &osc_sys_ck, CK_3XXX),
+ CLK("twl", "fck", &osc_sys_ck, CK_3XXX),
CLK(NULL, "sys_ck", &sys_ck, CK_3XXX),
CLK(NULL, "sys_altclk", &sys_altclk, CK_3XXX),
CLK(NULL, "mcbsp_clks", &mcbsp_clks, CK_3XXX),
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -46,8 +46,6 @@
#include <linux/i2c.h>
#include <linux/i2c/twl.h>
-#include <plat/cpu.h>
-
#include "twl-core.h"
/*
@@ -1134,12 +1132,7 @@ static void clocks_init(struct device *dev,
u32 rate;
u8 ctrl = HFCLK_FREQ_26_MHZ;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
- if (cpu_is_omap2430())
- osc = clk_get(dev, "osc_ck");
- else
- osc = clk_get(dev, "osc_sys_ck");
-
+ osc = clk_get(dev, "fck");
if (IS_ERR(osc)) {
printk(KERN_WARNING "Skipping twl internal clock init and "
"using bootloader value (unknown osc rate)\n");
@@ -1149,18 +1142,6 @@ static void clocks_init(struct device *dev,
rate = clk_get_rate(osc);
clk_put(osc);
-#else
- /* REVISIT for non-OMAP systems, pass the clock rate from
- * board init code, using platform_data.
- */
- osc = ERR_PTR(-EIO);
-
- printk(KERN_WARNING "Skipping twl internal clock init and "
- "using bootloader value (unknown osc rate)\n");
-
- return;
-#endif
-
switch (rate) {
case 19200000:
ctrl = HFCLK_FREQ_19p2_MHZ;
@@ -1222,10 +1203,23 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct twl4030_platform_data *pdata = client->dev.platform_data;
struct device_node *node = client->dev.of_node;
+ struct platform_device *pdev;
int irq_base = 0;
int status;
unsigned i, num_slaves;
+ pdev = platform_device_alloc(DRIVER_NAME, -1);
+ if (!pdev) {
+ dev_err(&client->dev, "can't alloc pdev\n");
+ return -ENOMEM;
+ }
+
+ status = platform_device_add(pdev);
+ if (status) {
+ platform_device_put(pdev);
+ return status;
+ }
+
if (node && !pdata) {
/*
* XXX: Temporary pdata until the information is correctly
@@ -1234,23 +1228,30 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
pdata = devm_kzalloc(&client->dev,
sizeof(struct twl4030_platform_data),
GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
+ if (!pdata) {
+ status = -ENOMEM;
+ goto free;
+ }
}
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
- return -EINVAL;
+ status = -EINVAL;
+ goto free;
}
+ platform_set_drvdata(pdev, pdata);
+
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
dev_dbg(&client->dev, "can't talk I2C?\n");
- return -EIO;
+ status = -EIO;
+ goto free;
}
if (inuse) {
dev_dbg(&client->dev, "driver is already in use\n");
- return -EBUSY;
+ status = -EBUSY;
+ goto free;
}
if ((id->driver_data) & TWL6030_CLASS) {
@@ -1285,7 +1286,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
inuse = true;
/* setup clock framework */
- clocks_init(&client->dev, pdata->clock);
+ clocks_init(&pdev->dev, pdata->clock);
/* read TWL IDCODE Register */
if (twl_id == TWL4030_CLASS_ID) {
@@ -1335,6 +1336,9 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
fail:
if (status < 0)
twl_remove(client);
+free:
+ if (status < 0)
+ platform_device_unregister(pdev);
return status;
}
--
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