diff options
Diffstat (limited to 'drivers/mxc/ipu3/ipu_common.c')
| -rw-r--r-- | drivers/mxc/ipu3/ipu_common.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mxc/ipu3/ipu_common.c b/drivers/mxc/ipu3/ipu_common.c index 6cb5345827b3..e654eeea92a2 100644 --- a/drivers/mxc/ipu3/ipu_common.c +++ b/drivers/mxc/ipu3/ipu_common.c @@ -138,6 +138,21 @@ static inline int _ipu_is_smfc_chan(uint32_t dma_chan) #define idma_is_set(reg, dma) (__raw_readl(reg(dma)) & idma_mask(dma)) /*! + * This function resets IPU + */ +void ipu_reset(void) +{ + u32 *reg; + u32 value; + reg = ioremap(SRC_BASE_ADDR, PAGE_SIZE); + value = __raw_readl(reg); + value = value | SW_IPU_RST; + __raw_writel(value, reg); + iounmap(reg); +} +EXPORT_SYMBOL(ipu_reset); + +/*! * This function is called by the driver framework to initialize the IPU * hardware. * @@ -222,6 +237,8 @@ static int ipu_probe(struct platform_device *pdev) g_ipu_clk = clk_get(&pdev->dev, "ipu_clk"); dev_dbg(g_ipu_dev, "ipu_clk = %lu\n", clk_get_rate(g_ipu_clk)); + ipu_reset(); + clk_enable(g_ipu_clk); g_di_clk[0] = plat_data->di_clk[0]; |