Some of the SOCs hold the IRB IP in softreset state by default.
For this IP to work driver needs to bring it out of softreset.
This patch adds support to reset the IP via reset framework.
Without this patch the driver can not work with SoCs which holds the IP
in softreset.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
+#include <linux/reset.h>
#include <media/rc-core.h>
#include <linux/pinctrl/consumer.h>
#include <media/rc-core.h>
#include <linux/pinctrl/consumer.h>
int sample_mult;
int sample_div;
bool rxuhfmode;
int sample_mult;
int sample_div;
bool rxuhfmode;
+ struct reset_control *rstc;
unsigned int rx_max_symbol_per = MAX_SYMB_TIME;
unsigned int rx_sampling_freq_div;
unsigned int rx_max_symbol_per = MAX_SYMB_TIME;
unsigned int rx_sampling_freq_div;
+ /* Enable the IP */
+ if (dev->rstc)
+ reset_control_deassert(dev->rstc);
+
clk_prepare_enable(dev->sys_clock);
baseclock = clk_get_rate(dev->sys_clock);
clk_prepare_enable(dev->sys_clock);
baseclock = clk_get_rate(dev->sys_clock);
else
rc_dev->rx_base = rc_dev->base;
else
rc_dev->rx_base = rc_dev->base;
+
+ rc_dev->rstc = reset_control_get(dev, NULL);
+ if (IS_ERR(rc_dev->rstc))
+ rc_dev->rstc = NULL;
+
rc_dev->dev = dev;
platform_set_drvdata(pdev, rc_dev);
st_rc_hardware_init(rc_dev);
rc_dev->dev = dev;
platform_set_drvdata(pdev, rc_dev);
st_rc_hardware_init(rc_dev);
writel(0x00, rc_dev->rx_base + IRB_RX_EN);
writel(0x00, rc_dev->rx_base + IRB_RX_INT_EN);
clk_disable_unprepare(rc_dev->sys_clock);
writel(0x00, rc_dev->rx_base + IRB_RX_EN);
writel(0x00, rc_dev->rx_base + IRB_RX_INT_EN);
clk_disable_unprepare(rc_dev->sys_clock);
+ if (rc_dev->rstc)
+ reset_control_assert(rc_dev->rstc);