summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/prm_common.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 09:24:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-22 09:24:55 -0700
commit8b3c8ba3d8c2680dab5363a80c024965cac08b1e (patch)
tree18150efb36891e6e76e2cad89c1b2fcc5faeae93 /arch/arm/mach-omap2/prm_common.c
parentd34dc4f9e88e4b6beefb819e4e743fd6160a9b75 (diff)
parent48c1078509b47b38802329028ccfd77783bcff99 (diff)
Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late changes from Olof Johansson: "We were expecting to sit on this branch through most of the merge window since the contents was merged into our tree late, but we ended up sitting on all of our contents so it can go in with the rest. The contents here is: - a large branch of cleanups of the CM/PRM blocks on OMAP. - a couple of patches plumbing up CM/PRM on OMAP5 and DRA7. - a branch with DT updates for Freescale i.MX. including some shuffling from .dts to .dtsi (include) files that causes a little churn" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (78 commits) ARM: OMAP2+: Fix booting with configs that don't have MFD_SYSCON ARM: OMAP4+: control: add support for initializing control module via DT ARM: dts: dra7: add minimal l4 bus layout with control module support ARM: dts: omap5: add minimal l4 bus layout with control module support ARM: OMAP4+: control: remove support for legacy pad read/write ARM: OMAP4: display: convert display to use syscon for dsi muxing ARM: dts: omap4: add minimal l4 bus layout with control module support ARM: dts: am4372: add minimal l4 bus layout with control module support ARM: dts: am43xx-epos-evm: fix pinmux node layout ARM: dts: am33xx: add minimal l4 bus layout with control module support ARM: dts: omap3: add minimal l4 bus layout with control module support ARM: dts: omap24xx: add minimal l4 bus layout with control module support ARM: OMAP2+: control: add syscon support for register accesses ARM: OMAP2+: id: cache omap_type value ARM: OMAP2+: control: remove API for getting control module base address ARM: OMAP2+: clock: add low-level support for regmap ARM: OMAP4+: PRM: get rid of cpu_is_omap44xx calls from interrupt init ARM: OMAP4+: PRM: setup prm_features from the PRM init time flags ARM: OMAP2+: CM: move SoC specific init calls within a generic API ARM: OMAP4+: PRM: determine prm_device_inst based on DT compatibility ...
Diffstat (limited to 'arch/arm/mach-omap2/prm_common.c')
-rw-r--r--arch/arm/mach-omap2/prm_common.c258
1 files changed, 207 insertions, 51 deletions
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index bfaa7ba595cc..7add7994dbfc 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -32,7 +32,11 @@
#include "prm2xxx_3xxx.h"
#include "prm2xxx.h"
#include "prm3xxx.h"
+#include "prm33xx.h"
#include "prm44xx.h"
+#include "prm54xx.h"
+#include "prm7xx.h"
+#include "prcm43xx.h"
#include "common.h"
#include "clock.h"
#include "cm.h"
@@ -534,6 +538,61 @@ void omap_prm_reset_system(void)
}
/**
+ * omap_prm_clear_mod_irqs - clear wake-up events from PRCM interrupt
+ * @module: PRM module to clear wakeups from
+ * @regs: register to clear
+ * @wkst_mask: wkst bits to clear
+ *
+ * Clears any wakeup events for the module and register set defined.
+ * Uses SoC specific implementation to do the actual wakeup status
+ * clearing.
+ */
+int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask)
+{
+ if (!prm_ll_data->clear_mod_irqs) {
+ WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return prm_ll_data->clear_mod_irqs(module, regs, wkst_mask);
+}
+
+/**
+ * omap_prm_vp_check_txdone - check voltage processor TX done status
+ *
+ * Checks if voltage processor transmission has been completed.
+ * Returns non-zero if a transmission has completed, 0 otherwise.
+ */
+u32 omap_prm_vp_check_txdone(u8 vp_id)
+{
+ if (!prm_ll_data->vp_check_txdone) {
+ WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+ __func__);
+ return 0;
+ }
+
+ return prm_ll_data->vp_check_txdone(vp_id);
+}
+
+/**
+ * omap_prm_vp_clear_txdone - clears voltage processor TX done status
+ *
+ * Clears the status bit for completed voltage processor transmission
+ * returned by prm_vp_check_txdone.
+ */
+void omap_prm_vp_clear_txdone(u8 vp_id)
+{
+ if (!prm_ll_data->vp_clear_txdone) {
+ WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+ __func__);
+ return;
+ }
+
+ prm_ll_data->vp_clear_txdone(vp_id);
+}
+
+/**
* prm_register - register per-SoC low-level data with the PRM
* @pld: low-level per-SoC OMAP PRM data & function pointers to register
*
@@ -578,78 +637,175 @@ int prm_unregister(struct prm_ll_data *pld)
return 0;
}
-static const struct of_device_id omap_prcm_dt_match_table[] = {
- { .compatible = "ti,am3-prcm" },
- { .compatible = "ti,am3-scrm" },
- { .compatible = "ti,am4-prcm" },
- { .compatible = "ti,am4-scrm" },
- { .compatible = "ti,dm814-prcm" },
- { .compatible = "ti,dm814-scrm" },
- { .compatible = "ti,dm816-prcm" },
- { .compatible = "ti,dm816-scrm" },
- { .compatible = "ti,omap2-prcm" },
- { .compatible = "ti,omap2-scrm" },
- { .compatible = "ti,omap3-prm" },
- { .compatible = "ti,omap3-cm" },
- { .compatible = "ti,omap3-scrm" },
- { .compatible = "ti,omap4-cm1" },
- { .compatible = "ti,omap4-prm" },
- { .compatible = "ti,omap4-cm2" },
- { .compatible = "ti,omap4-scrm" },
- { .compatible = "ti,omap5-prm" },
- { .compatible = "ti,omap5-cm-core-aon" },
- { .compatible = "ti,omap5-scrm" },
- { .compatible = "ti,omap5-cm-core" },
- { .compatible = "ti,dra7-prm" },
- { .compatible = "ti,dra7-cm-core-aon" },
- { .compatible = "ti,dra7-cm-core" },
- { }
+#ifdef CONFIG_ARCH_OMAP2
+static struct omap_prcm_init_data omap2_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap2xxx_prm_init,
};
+#endif
+
+#ifdef CONFIG_ARCH_OMAP3
+static struct omap_prcm_init_data omap3_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap3xxx_prm_init,
-static struct clk_hw_omap memmap_dummy_ck = {
- .flags = MEMMAP_ADDRESSING,
+ /*
+ * IVA2 offset is a negative value, must offset the prm_base
+ * address by this to get it to positive
+ */
+ .offset = -OMAP3430_IVA2_MOD,
};
+#endif
-static u32 prm_clk_readl(void __iomem *reg)
-{
- return omap2_clk_readl(&memmap_dummy_ck, reg);
-}
+#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_TI81XX)
+static struct omap_prcm_init_data am3_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = am33xx_prm_init,
+};
+#endif
+
+#ifdef CONFIG_ARCH_OMAP4
+static struct omap_prcm_init_data omap4_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap44xx_prm_init,
+ .device_inst_offset = OMAP4430_PRM_DEVICE_INST,
+ .flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE | PRM_IRQ_DEFAULT,
+};
+#endif
+
+#ifdef CONFIG_SOC_OMAP5
+static struct omap_prcm_init_data omap5_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap44xx_prm_init,
+ .device_inst_offset = OMAP54XX_PRM_DEVICE_INST,
+ .flags = PRM_HAS_IO_WAKEUP | PRM_HAS_VOLTAGE,
+};
+#endif
+
+#ifdef CONFIG_SOC_DRA7XX
+static struct omap_prcm_init_data dra7_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap44xx_prm_init,
+ .device_inst_offset = DRA7XX_PRM_DEVICE_INST,
+ .flags = PRM_HAS_IO_WAKEUP,
+};
+#endif
-static void prm_clk_writel(u32 val, void __iomem *reg)
-{
- omap2_clk_writel(val, &memmap_dummy_ck, reg);
-}
+#ifdef CONFIG_SOC_AM43XX
+static struct omap_prcm_init_data am4_prm_data __initdata = {
+ .index = TI_CLKM_PRM,
+ .init = omap44xx_prm_init,
+ .device_inst_offset = AM43XX_PRM_DEVICE_INST,
+};
+#endif
-static struct ti_clk_ll_ops omap_clk_ll_ops = {
- .clk_readl = prm_clk_readl,
- .clk_writel = prm_clk_writel,
+#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
+static struct omap_prcm_init_data scrm_data __initdata = {
+ .index = TI_CLKM_SCRM,
+};
+#endif
+
+static const struct of_device_id omap_prcm_dt_match_table[] __initconst = {
+#ifdef CONFIG_SOC_AM33XX
+ { .compatible = "ti,am3-prcm", .data = &am3_prm_data },
+#endif
+#ifdef CONFIG_SOC_AM43XX
+ { .compatible = "ti,am4-prcm", .data = &am4_prm_data },
+#endif
+#ifdef CONFIG_SOC_TI81XX
+ { .compatible = "ti,dm814-prcm", .data = &am3_prm_data },
+ { .compatible = "ti,dm816-prcm", .data = &am3_prm_data },
+#endif
+#ifdef CONFIG_ARCH_OMAP2
+ { .compatible = "ti,omap2-prcm", .data = &omap2_prm_data },
+#endif
+#ifdef CONFIG_ARCH_OMAP3
+ { .compatible = "ti,omap3-prm", .data = &omap3_prm_data },
+#endif
+#ifdef CONFIG_ARCH_OMAP4
+ { .compatible = "ti,omap4-prm", .data = &omap4_prm_data },
+ { .compatible = "ti,omap4-scrm", .data = &scrm_data },
+#endif
+#ifdef CONFIG_SOC_OMAP5
+ { .compatible = "ti,omap5-prm", .data = &omap5_prm_data },
+ { .compatible = "ti,omap5-scrm", .data = &scrm_data },
+#endif
+#ifdef CONFIG_SOC_DRA7XX
+ { .compatible = "ti,dra7-prm", .data = &dra7_prm_data },
+#endif
+ { }
};
-int __init of_prcm_init(void)
+/**
+ * omap2_prm_base_init - initialize iomappings for the PRM driver
+ *
+ * Detects and initializes the iomappings for the PRM driver, based
+ * on the DT data. Returns 0 in success, negative error value
+ * otherwise.
+ */
+int __init omap2_prm_base_init(void)
{
struct device_node *np;
+ const struct of_device_id *match;
+ struct omap_prcm_init_data *data;
void __iomem *mem;
- int memmap_index = 0;
- ti_clk_ll_ops = &omap_clk_ll_ops;
+ for_each_matching_node_and_match(np, omap_prcm_dt_match_table, &match) {
+ data = (struct omap_prcm_init_data *)match->data;
- for_each_matching_node(np, omap_prcm_dt_match_table) {
mem = of_iomap(np, 0);
- clk_memmaps[memmap_index] = mem;
- ti_dt_clk_init_provider(np, memmap_index);
- memmap_index++;
+ if (!mem)
+ return -ENOMEM;
+
+ if (data->index == TI_CLKM_PRM)
+ prm_base = mem + data->offset;
+
+ data->mem = mem;
+
+ data->np = np;
+
+ if (data->init)
+ data->init(data);
}
return 0;
}
-void __init omap3_prcm_legacy_iomaps_init(void)
+int __init omap2_prcm_base_init(void)
{
- ti_clk_ll_ops = &omap_clk_ll_ops;
+ int ret;
- clk_memmaps[TI_CLKM_CM] = cm_base + OMAP3430_IVA2_MOD;
- clk_memmaps[TI_CLKM_PRM] = prm_base + OMAP3430_IVA2_MOD;
- clk_memmaps[TI_CLKM_SCRM] = omap_ctrl_base_get();
+ ret = omap2_prm_base_init();
+ if (ret)
+ return ret;
+
+ return omap2_cm_base_init();
+}
+
+/**
+ * omap_prcm_init - low level init for the PRCM drivers
+ *
+ * Initializes the low level clock infrastructure for PRCM drivers.
+ * Returns 0 in success, negative error value in failure.
+ */
+int __init omap_prcm_init(void)
+{
+ struct device_node *np;
+ const struct of_device_id *match;
+ const struct omap_prcm_init_data *data;
+ int ret;
+
+ for_each_matching_node_and_match(np, omap_prcm_dt_match_table, &match) {
+ data = match->data;
+
+ ret = omap2_clk_provider_init(np, data->index, NULL, data->mem);
+ if (ret)
+ return ret;
+ }
+
+ omap_cm_init();
+
+ return 0;
}
static int __init prm_late_init(void)