diff options
Diffstat (limited to 'recipes/linux/linux-omap2-git/beagleboard/06-omappm-opp-resource-modeling.eml')
| -rw-r--r-- | recipes/linux/linux-omap2-git/beagleboard/06-omappm-opp-resource-modeling.eml | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap2-git/beagleboard/06-omappm-opp-resource-modeling.eml b/recipes/linux/linux-omap2-git/beagleboard/06-omappm-opp-resource-modeling.eml new file mode 100644 index 0000000000..69ed0f748c --- /dev/null +++ b/recipes/linux/linux-omap2-git/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 + }; + + + +-- +To unsubscribe from this list: send the line "unsubscribe linux-omap" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html |