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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-29 11:38:27 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-29 11:38:27 -0700 |
commit | b00ed48bb0a7c295facf9036135a573a5cdbe7de (patch) | |
tree | a14d3702971e30dfec8392af4f7b9e97d2246f95 /drivers/clk | |
parent | c3a9a3c5f5590e85da15d6201e415ff636fe5670 (diff) | |
parent | d1a28597808268b87f156138aad3104aa255e62b (diff) | |
download | linux-b00ed48bb0a7c295facf9036135a573a5cdbe7de.tar.gz |
Merge tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul: "Nothing special, this includes a couple of new device support and new driver support and bunch of driver updates. New support: - Tegra gpcdma driver support - Qualcomm SM8350, Sm8450 and SC7280 device support - Renesas RZN1 dma and platform support Updates: - stm32 device pause/resume support and updates - DMA memset ops Documentation and usage clarification - deprecate '#dma-channels' & '#dma-requests' bindings - driver updates for stm32, ptdma idsx etc" * tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (87 commits) dmaengine: idxd: make idxd_wq_enable() return 0 if wq is already enabled dmaengine: sun6i: Add support for the D1 variant dmaengine: sun6i: Add support for 34-bit physical addresses dmaengine: sun6i: Do not use virt_to_phys dt-bindings: dma: sun50i-a64: Add compatible for D1 dmaengine: tegra: Remove unused switch case dmaengine: tegra: Fix uninitialized variable usage dmaengine: stm32-dma: add device_pause/device_resume support dmaengine: stm32-dma: rename pm ops before dma pause/resume introduction dmaengine: stm32-dma: pass DMA_SxSCR value to stm32_dma_handle_chan_done() dmaengine: stm32-dma: introduce stm32_dma_sg_inc to manage chan->next_sg dmaengine: stm32-dmamux: avoid reset of dmamux if used by coprocessor dmaengine: qcom: gpi: Add support for sc7280 dt-bindings: dma: pl330: Add power-domains dmaengine: stm32-mdma: use dev_dbg on non-busy channel spurious it dmaengine: stm32-mdma: fix chan initialization in stm32_mdma_irq_handler() dmaengine: stm32-mdma: remove GISR1 register dmaengine: ti: deprecate '#dma-channels' dmaengine: mmp: deprecate '#dma-channels' dmaengine: pxa: deprecate '#dma-channels' and '#dma-requests' ...
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/renesas/r9a06g032-clocks.c | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index 1826aa73b713..35ffc462af1a 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -16,13 +16,17 @@ #include <linux/math64.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/pm_clock.h> #include <linux/pm_domain.h> #include <linux/slab.h> +#include <linux/soc/renesas/r9a06g032-sysctrl.h> #include <linux/spinlock.h> #include <dt-bindings/clock/r9a06g032-sysctrl.h> +#define R9A06G032_SYSCTRL_DMAMUX 0xA0 + struct r9a06g032_gate { u16 gate, reset, ready, midle, scon, mirack, mistat; @@ -315,6 +319,30 @@ struct r9a06g032_priv { void __iomem *reg; }; +static struct r9a06g032_priv *sysctrl_priv; + +/* Exported helper to access the DMAMUX register */ +int r9a06g032_sysctrl_set_dmamux(u32 mask, u32 val) +{ + unsigned long flags; + u32 dmamux; + + if (!sysctrl_priv) + return -EPROBE_DEFER; + + spin_lock_irqsave(&sysctrl_priv->lock, flags); + + dmamux = readl(sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX); + dmamux &= ~mask; + dmamux |= val & mask; + writel(dmamux, sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX); + + spin_unlock_irqrestore(&sysctrl_priv->lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(r9a06g032_sysctrl_set_dmamux); + /* register/bit pairs are encoded as an uint16_t */ static void clk_rdesc_set(struct r9a06g032_priv *clocks, @@ -963,7 +991,17 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev) if (error) return error; - return r9a06g032_add_clk_domain(dev); + error = r9a06g032_add_clk_domain(dev); + if (error) + return error; + + sysctrl_priv = clocks; + + error = of_platform_populate(np, NULL, NULL, dev); + if (error) + dev_err(dev, "Failed to populate children (%d)\n", error); + + return 0; } static const struct of_device_id r9a06g032_match[] = { |