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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /arch/arm/mach-shmobile/setup-r8a7740.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7740.c')
-rw-r--r--arch/arm/mach-shmobile/setup-r8a7740.c55
1 files changed, 0 insertions, 55 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c
index 9832e4839..00291cc17 100644
--- a/arch/arm/mach-shmobile/setup-r8a7740.c
+++ b/arch/arm/mach-shmobile/setup-r8a7740.c
@@ -13,7 +13,6 @@
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
-#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/kernel.h>
#include <linux/init.h>
@@ -690,56 +689,6 @@ void __init r8a7740_meram_workaround(void)
}
}
-#define ICCR 0x0004
-#define ICSTART 0x0070
-
-#define i2c_read(reg, offset) ioread8(reg + offset)
-#define i2c_write(reg, offset, data) iowrite8(data, reg + offset)
-
-/*
- * r8a7740 chip has lasting errata on I2C I/O pad reset.
- * this is work-around for it.
- */
-static void r8a7740_i2c_workaround(struct platform_device *pdev)
-{
- struct resource *res;
- void __iomem *reg;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (unlikely(!res)) {
- pr_err("r8a7740 i2c workaround fail (cannot find resource)\n");
- return;
- }
-
- reg = ioremap(res->start, resource_size(res));
- if (unlikely(!reg)) {
- pr_err("r8a7740 i2c workaround fail (cannot map IO)\n");
- return;
- }
-
- i2c_write(reg, ICCR, i2c_read(reg, ICCR) | 0x80);
- i2c_read(reg, ICCR); /* dummy read */
-
- i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10);
- i2c_read(reg, ICSTART); /* dummy read */
-
- udelay(10);
-
- i2c_write(reg, ICCR, 0x01);
- i2c_write(reg, ICSTART, 0x00);
-
- udelay(10);
-
- i2c_write(reg, ICCR, 0x10);
- udelay(10);
- i2c_write(reg, ICCR, 0x00);
- udelay(10);
- i2c_write(reg, ICCR, 0x10);
- udelay(10);
-
- iounmap(reg);
-}
-
void __init r8a7740_add_standard_devices(void)
{
static struct pm_domain_device domain_devices[] __initdata = {
@@ -766,10 +715,6 @@ void __init r8a7740_add_standard_devices(void)
{ "A3SP", &usb_dma_device },
};
- /* I2C work-around */
- r8a7740_i2c_workaround(&i2c0_device);
- r8a7740_i2c_workaround(&i2c1_device);
-
r8a7740_init_pm_domains();
/* add devices */