#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/of_address.h>
+#include <linux/platform_device.h>
#include "clk-factors.h"
.pwidth = 2,
};
-static const struct factors_data sun4i_a10_mod0_data __initconst = {
+static const struct factors_data sun4i_a10_mod0_data = {
.enable = 31,
.mux = 24,
.muxmask = BIT(1) | BIT(0),
static void __init sun4i_a10_mod0_setup(struct device_node *node)
{
- sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun4i_a10_mod0_lock);
+ void __iomem *reg;
+
+ reg = of_iomap(node, 0);
+ if (!reg) {
+ /*
+ * This happens with mod0 clk nodes instantiated through
+ * mfd, as those do not have their resources assigned at
+ * CLK_OF_DECLARE time yet, so do not print an error.
+ */
+ return;
+ }
+
+ sunxi_factors_register(node, &sun4i_a10_mod0_data,
+ &sun4i_a10_mod0_lock, reg);
}
CLK_OF_DECLARE(sun4i_a10_mod0, "allwinner,sun4i-a10-mod0-clk", sun4i_a10_mod0_setup);
+static int sun4i_a10_mod0_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *r;
+ void __iomem *reg;
+
+ if (!np)
+ return -ENODEV;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ reg = devm_ioremap_resource(&pdev->dev, r);
+ if (IS_ERR(reg))
+ return PTR_ERR(reg);
+
+ sunxi_factors_register(np, &sun4i_a10_mod0_data,
+ &sun4i_a10_mod0_lock, reg);
+ return 0;
+}
+
+static const struct of_device_id sun4i_a10_mod0_clk_dt_ids[] = {
+ { .compatible = "allwinner,sun4i-a10-mod0-clk" },
+ { /* sentinel */ }
+};
+
+static struct platform_driver sun4i_a10_mod0_clk_driver = {
+ .driver = {
+ .name = "sun4i-a10-mod0-clk",
+ .of_match_table = sun4i_a10_mod0_clk_dt_ids,
+ },
+ .probe = sun4i_a10_mod0_clk_probe,
+};
+module_platform_driver(sun4i_a10_mod0_clk_driver);
+
+static const struct factors_data sun9i_a80_mod0_data __initconst = {
+ .enable = 31,
+ .mux = 24,
+ .muxmask = BIT(3) | BIT(2) | BIT(1) | BIT(0),
+ .table = &sun4i_a10_mod0_config,
+ .getter = sun4i_a10_get_mod0_factors,
+};
+
+static void __init sun9i_a80_mod0_setup(struct device_node *node)
+{
+ void __iomem *reg;
+
+ reg = of_io_request_and_map(node, 0, of_node_full_name(node));
+ if (IS_ERR(reg)) {
+ pr_err("Could not get registers for mod0-clk: %s\n",
+ node->name);
+ return;
+ }
+
+ sunxi_factors_register(node, &sun9i_a80_mod0_data,
+ &sun4i_a10_mod0_lock, reg);
+}
+CLK_OF_DECLARE(sun9i_a80_mod0, "allwinner,sun9i-a80-mod0-clk", sun9i_a80_mod0_setup);
+
static DEFINE_SPINLOCK(sun5i_a13_mbus_lock);
static void __init sun5i_a13_mbus_setup(struct device_node *node)
{
- struct clk *mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data, &sun5i_a13_mbus_lock);
+ struct clk *mbus;
+ void __iomem *reg;
+
+ reg = of_iomap(node, 0);
+ if (!reg) {
+ pr_err("Could not get registers for a13-mbus-clk\n");
+ return;
+ }
+
+ mbus = sunxi_factors_register(node, &sun4i_a10_mod0_data,
+ &sun5i_a13_mbus_lock, reg);
/* The MBUS clocks needs to be always enabled */
__clk_get(mbus);
}
CLK_OF_DECLARE(sun5i_a13_mbus, "allwinner,sun5i-a13-mbus-clk", sun5i_a13_mbus_setup);
-struct mmc_phase_data {
- u8 offset;
-};
-
struct mmc_phase {
struct clk_hw hw;
+ u8 offset;
void __iomem *reg;
- struct mmc_phase_data *data;
spinlock_t *lock;
};
u8 delay;
value = readl(phase->reg);
- delay = (value >> phase->data->offset) & 0x3;
+ delay = (value >> phase->offset) & 0x3;
if (!delay)
return 180;
spin_lock_irqsave(phase->lock, flags);
value = readl(phase->reg);
- value &= ~GENMASK(phase->data->offset + 3, phase->data->offset);
- value |= delay << phase->data->offset;
+ value &= ~GENMASK(phase->offset + 3, phase->offset);
+ value |= delay << phase->offset;
writel(value, phase->reg);
spin_unlock_irqrestore(phase->lock, flags);
.set_phase = mmc_set_phase,
};
-static void __init sun4i_a10_mmc_phase_setup(struct device_node *node,
- struct mmc_phase_data *data)
+/*
+ * sunxi_mmc_setup - Common setup function for mmc module clocks
+ *
+ * The only difference between module clocks on different platforms is the
+ * width of the mux register bits and the valid values, which are passed in
+ * through struct factors_data. The phase clocks parts are identical.
+ */
+static void __init sunxi_mmc_setup(struct device_node *node,
+ const struct factors_data *data,
+ spinlock_t *lock)
{
- const char *parent_names[1] = { of_clk_get_parent_name(node, 0) };
- struct clk_init_data init = {
- .num_parents = 1,
- .parent_names = parent_names,
- .ops = &mmc_clk_ops,
- };
-
- struct mmc_phase *phase;
- struct clk *clk;
-
- phase = kmalloc(sizeof(*phase), GFP_KERNEL);
- if (!phase)
+ struct clk_onecell_data *clk_data;
+ const char *parent;
+ void __iomem *reg;
+ int i;
+
+ reg = of_io_request_and_map(node, 0, of_node_full_name(node));
+ if (IS_ERR(reg)) {
+ pr_err("Couldn't map the %s clock registers\n", node->name);
return;
+ }
- phase->hw.init = &init;
-
- phase->reg = of_iomap(node, 0);
- if (!phase->reg)
- goto err_free;
-
- phase->data = data;
- phase->lock = &sun4i_a10_mod0_lock;
-
- if (of_property_read_string(node, "clock-output-names", &init.name))
- init.name = node->name;
+ clk_data = kmalloc(sizeof(*clk_data), GFP_KERNEL);
+ if (!clk_data)
+ return;
- clk = clk_register(NULL, &phase->hw);
- if (IS_ERR(clk))
- goto err_unmap;
+ clk_data->clks = kcalloc(3, sizeof(*clk_data->clks), GFP_KERNEL);
+ if (!clk_data->clks)
+ goto err_free_data;
+
+ clk_data->clk_num = 3;
+ clk_data->clks[0] = sunxi_factors_register(node, data, lock, reg);
+ if (!clk_data->clks[0])
+ goto err_free_clks;
+
+ parent = __clk_get_name(clk_data->clks[0]);
+
+ for (i = 1; i < 3; i++) {
+ struct clk_init_data init = {
+ .num_parents = 1,
+ .parent_names = &parent,
+ .ops = &mmc_clk_ops,
+ };
+ struct mmc_phase *phase;
+
+ phase = kmalloc(sizeof(*phase), GFP_KERNEL);
+ if (!phase)
+ continue;
+
+ phase->hw.init = &init;
+ phase->reg = reg;
+ phase->lock = lock;
+
+ if (i == 1)
+ phase->offset = 8;
+ else
+ phase->offset = 20;
+
+ if (of_property_read_string_index(node, "clock-output-names",
+ i, &init.name))
+ init.name = node->name;
+
+ clk_data->clks[i] = clk_register(NULL, &phase->hw);
+ if (IS_ERR(clk_data->clks[i])) {
+ kfree(phase);
+ continue;
+ }
+ }
- of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
return;
-err_unmap:
- iounmap(phase->reg);
-err_free:
- kfree(phase);
+err_free_clks:
+ kfree(clk_data->clks);
+err_free_data:
+ kfree(clk_data);
}
+static DEFINE_SPINLOCK(sun4i_a10_mmc_lock);
-static struct mmc_phase_data mmc_output_clk = {
- .offset = 8,
-};
-
-static struct mmc_phase_data mmc_sample_clk = {
- .offset = 20,
-};
-
-static void __init sun4i_a10_mmc_output_setup(struct device_node *node)
+static void __init sun4i_a10_mmc_setup(struct device_node *node)
{
- sun4i_a10_mmc_phase_setup(node, &mmc_output_clk);
+ sunxi_mmc_setup(node, &sun4i_a10_mod0_data, &sun4i_a10_mmc_lock);
}
-CLK_OF_DECLARE(sun4i_a10_mmc_output, "allwinner,sun4i-a10-mmc-output-clk", sun4i_a10_mmc_output_setup);
+CLK_OF_DECLARE(sun4i_a10_mmc, "allwinner,sun4i-a10-mmc-clk", sun4i_a10_mmc_setup);
+
+static DEFINE_SPINLOCK(sun9i_a80_mmc_lock);
-static void __init sun4i_a10_mmc_sample_setup(struct device_node *node)
+static void __init sun9i_a80_mmc_setup(struct device_node *node)
{
- sun4i_a10_mmc_phase_setup(node, &mmc_sample_clk);
+ sunxi_mmc_setup(node, &sun9i_a80_mod0_data, &sun9i_a80_mmc_lock);
}
-CLK_OF_DECLARE(sun4i_a10_mmc_sample, "allwinner,sun4i-a10-mmc-sample-clk", sun4i_a10_mmc_sample_setup);
+CLK_OF_DECLARE(sun9i_a80_mmc, "allwinner,sun9i-a80-mmc-clk", sun9i_a80_mmc_setup);
projects / firefly-linux-kernel-4.4.55.git / blobdiff