linux-omap: add recipe to build 2.6.26

1 files changed, 228 insertions, 0 deletions

diff --git a/packages/linux/linux-omap-2.6.26/beagleboard/06-omappm-opp-resource-modeling.eml b/packages/linux/linux-omap-2.6.26/beagleboard/06-omappm-opp-resource-modeling.eml
new file mode 100644
index 0000000000..69ed0f748c
--- /dev/null
+++ b/packages/linux/linux-omap-2.6.26/beagleboard/06-omappm-opp-resource-modeling.eml
@@ -0,0 +1,228 @@
+Adds OPP/Frequency resources to SRF
+
+Signed-off-by: Rajendra Nayak <rnayak@ti.com>
+---
+ arch/arm/mach-omap2/resource34xx.c |  101 +++++++++++++++++++++++++++++++++++++
+ arch/arm/mach-omap2/resource34xx.h |   74 +++++++++++++++++++++++++++
+ 2 files changed, 175 insertions(+)
+
+Index: linux-omap-2.6/arch/arm/mach-omap2/resource34xx.c
+===================================================================
+--- linux-omap-2.6.orig/arch/arm/mach-omap2/resource34xx.c	2008-08-07
+15:07:08.000000000 +0530
++++ linux-omap-2.6/arch/arm/mach-omap2/resource34xx.c	2008-08-07
+15:09:01.000000000 +0530
+@@ -146,3 +146,104 @@ int set_pd_latency(struct shared_resourc
+ 	}
+ 	return 0;
+ }
++
++static struct clk *vdd1_clk;
++static struct clk *vdd2_clk;
++static struct device dummy_srf_dev;
++
++/**
++ * init_opp - Initialize the OPP resource
++ */
++void init_opp(struct shared_resource *resp)
++{
++	resp->no_of_users = 0;
++	/* Initialize the current level of the OPP resource
++	* to the  opp set by u-boot.
++	*/
++	if (strcmp(resp->name, "vdd1_opp") == 0) {
++		resp->curr_level = curr_vdd1_prcm_set->opp;
++		vdd1_clk = clk_get(NULL, "virt_vdd1_prcm_set");
++	} else if (strcmp(resp->name, "vdd2_opp") == 0) {
++		resp->curr_level = curr_vdd2_prcm_set->opp;
++		vdd2_clk = clk_get(NULL, "virt_vdd2_prcm_set");
++	}
++	return;
++}
++
++int set_opp(struct shared_resource *resp, u32 target_level)
++{
++#ifdef CONFIG_MACH_OMAP_3430SDP
++	unsigned long mpu_freq;
++	if (strcmp(resp->name, "vdd1_opp") == 0) {
++		mpu_freq = get_freq(vdd1_rate_table + MAX_VDD1_OPP,
++					target_level);
++		clk_set_rate(vdd1_clk, mpu_freq);
++		resp->curr_level = curr_vdd1_prcm_set->opp;
++	} else if (strcmp(resp->name, "vdd2_opp") == 0) {
++		/* Not supported yet */
++	}
++#endif
++	return 0;
++}
++
++/**
++ * validate_opp - Validates if valid VDD1 OPP's are passed as the
++ * target_level.
++ * VDD2 OPP levels are passed as L3 throughput, which are then mapped
++ * to an appropriate OPP.
++ */
++int validate_opp(struct shared_resource *resp, u32 target_level)
++{
++	return 0;
++}
++
++/**
++ * init_freq - Initialize the frequency resource.
++ */
++void init_freq(struct shared_resource *resp)
++{
++#ifdef CONFIG_MACH_OMAP_3430SDP
++	char *linked_res_name;
++	resp->no_of_users = 0;
++
++	linked_res_name = (char *)resp->resource_data;
++	/* Initialize the current level of the Freq resource
++	* to the frequency set by u-boot.
++	*/
++	if (strcmp(resp->name, "mpu_freq") == 0)
++		/* MPU freq in Mhz */
++		resp->curr_level = curr_vdd1_prcm_set->speed;
++	else if (strcmp(resp->name, "dsp_freq") == 0)
++		/* DSP freq in Mhz */
++		resp->curr_level = get_freq(iva2_rate_table + MAX_VDD2_OPP,
++						curr_vdd1_prcm_set->opp);
++#endif
++	return;
++}
++
++int set_freq(struct shared_resource *resp, u32 target_level)
++{
++#ifdef CONFIG_MACH_OMAP_3430SDP
++	unsigned int vdd1_opp;
++
++	if (strcmp(resp->name, "mpu_freq") == 0)
++		vdd1_opp = get_opp(vdd1_rate_table + MAX_VDD1_OPP,
++							target_level);
++	else if (strcmp(resp->name, "dsp_freq") == 0)
++		vdd1_opp = get_opp(iva2_rate_table + MAX_VDD1_OPP,
++							target_level);
++
++	if (vdd1_opp == MIN_VDD1_OPP)
++		resource_release("vdd1_opp", &dummy_srf_dev);
++	else
++		resource_request("vdd1_opp", &dummy_srf_dev, vdd1_opp);
++
++	resp->curr_level = target_level;
++#endif
++	return 0;
++}
++
++int validate_freq(struct shared_resource *resp, u32 target_level)
++{
++	return 0;
++}
+Index: linux-omap-2.6/arch/arm/mach-omap2/resource34xx.h
+===================================================================
+--- linux-omap-2.6.orig/arch/arm/mach-omap2/resource34xx.h	2008-08-07
+15:07:02.000000000 +0530
++++ linux-omap-2.6/arch/arm/mach-omap2/resource34xx.h	2008-08-07
+15:31:42.000000000 +0530
+@@ -22,8 +22,17 @@
+ #define __ARCH_ARM_MACH_OMAP2_RESOURCE_H
+
+ #include <asm/arch/resource.h>
++#include <linux/clk.h>
++#include <asm/arch/clock.h>
+ #include <asm/arch/powerdomain.h>
+
++extern struct vdd_prcm_config *curr_vdd1_prcm_set;
++extern struct vdd_prcm_config *curr_vdd2_prcm_set;
++extern unsigned int get_freq(struct  vdd_prcm_config *, unsigned long);
++extern unsigned int get_opp(struct vdd_prcm_config *, unsigned long);
++extern struct vdd_prcm_config vdd1_rate_table[];
++extern struct vdd_prcm_config vdd2_rate_table[];
++extern struct vdd_prcm_config iva2_rate_table[];
+ /**
+  * mpu_latency/core_latency are used to control the cpuidle C state.
+  */
+@@ -207,6 +216,66 @@ static struct shared_resource emu_pwrdm_
+ 	.ops		= &pd_lat_res_ops,
+ };
+
++void init_opp(struct shared_resource *resp);
++int set_opp(struct shared_resource *resp, u32 target_level);
++int validate_opp(struct shared_resource *resp, u32 target_level);
++void init_freq(struct shared_resource *resp);
++int set_freq(struct shared_resource *resp, u32 target_level);
++int validate_freq(struct shared_resource *resp, u32 target_level);
++
++struct bus_throughput_db {
++	/* Throughput for each OPP/Freq of the bus */
++	unsigned long throughput[3];
++};
++
++static struct shared_resource_ops opp_res_ops = {
++	.init           = init_opp,
++	.change_level   = set_opp,
++	.validate_level = validate_opp,
++};
++
++static struct shared_resource vdd1_opp = {
++	.name           = "vdd1_opp",
++	.omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
++	.ops            = &opp_res_ops,
++};
++
++/* Throughput in KiB/s */
++static struct bus_throughput_db l3_throughput_db = {
++	.throughput[0] = 0,
++	.throughput[1] = 100,
++	.throughput[2] = 250,
++};
++
++static struct shared_resource vdd2_opp = {
++	.name           = "vdd2_opp",
++	.omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
++	.resource_data  = &l3_throughput_db,
++	.ops            = &opp_res_ops,
++};
++
++static char linked_res[] = "vdd1_opp";
++
++static struct shared_resource_ops freq_res_ops = {
++	.init           = init_freq,
++	.change_level   = set_freq,
++	.validate_level = validate_freq,
++};
++
++static struct shared_resource mpu_freq = {
++	.name           = "mpu_freq",
++	.omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
++	.resource_data  = &linked_res,
++	.ops            = &freq_res_ops,
++};
++
++static struct shared_resource dsp_freq = {
++	.name           = "dsp_freq",
++	.omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
++	.resource_data  = &linked_res,
++	.ops            = &freq_res_ops,
++};
++
+ struct shared_resource *resources_omap[] __initdata = {
+ 	&mpu_latency,
+ 	&core_latency,
+@@ -220,6 +289,11 @@ struct shared_resource *resources_omap[]
+ 	&neon_pwrdm_latency,
+ 	&usbhost_pwrdm_latency,
+ 	&emu_pwrdm_latency,
++	/* OPP/frequency resources */
++	&vdd1_opp,
++	&vdd2_opp,
++	&mpu_freq,
++	&dsp_freq,
+ 	NULL
+ };
+
+
+
+--
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