msm: acpuclock-8930: Move 8930 support to use acpuclock-krait
The acpuclock-krait library is an evolution of acpuclock-8960 with
several improvements. By dropping support for older versions of the
Krait processors and taking advantages of features only available on
newer Kraits, acpuclock-krait is both simpler and more efficient than
its predecessor. Key advantages in moving Krait targets to the newer
driver include:
- The ability to write to one CPU's CP15 registers from another CPU.
This means it's possible to change a CPU's clock sources after
power-collapsing it, rather than needing to select a low-power
source while it's still up (which slowed down the hotplug path).
It also means acpuclk_set_rate() can be called from any CPU.
- Dropping of obsolete Krait v1 processor errata workarounds.
- Relocation of SoC-specific data into its own files
- Shorter, more readable code
Change-Id: I90bbb41a47cc7c328b1c669d4001c7df76903f7b
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/acpuclock-8930.c b/arch/arm/mach-msm/acpuclock-8930.c
new file mode 100644
index 0000000..d60b4eb
--- /dev/null
+++ b/arch/arm/mach-msm/acpuclock-8930.c
@@ -0,0 +1,210 @@
+/*
+ * Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <mach/rpm-regulator.h>
+#include <mach/msm_bus_board.h>
+#include <mach/msm_bus.h>
+
+#include "acpuclock.h"
+#include "acpuclock-krait.h"
+
+/* Corner type vreg VDD values */
+#define LVL_NONE RPM_VREG_CORNER_NONE
+#define LVL_LOW RPM_VREG_CORNER_LOW
+#define LVL_NOM RPM_VREG_CORNER_NOMINAL
+#define LVL_HIGH RPM_VREG_CORNER_HIGH
+
+static struct hfpll_data hfpll_data = {
+ .mode_offset = 0x00,
+ .l_offset = 0x08,
+ .m_offset = 0x0C,
+ .n_offset = 0x10,
+ .config_offset = 0x04,
+ .config_val = 0x7845C665,
+ .has_droop_ctl = true,
+ .droop_offset = 0x14,
+ .droop_val = 0x0108C000,
+ .low_vdd_l_max = 40,
+ .vdd[HFPLL_VDD_NONE] = LVL_NONE,
+ .vdd[HFPLL_VDD_LOW] = LVL_LOW,
+ .vdd[HFPLL_VDD_NOM] = LVL_NOM,
+};
+
+static struct scalable scalable[] = {
+ [CPU0] = {
+ .hfpll_phys_base = 0x00903200,
+ .hfpll_data = &hfpll_data,
+ .aux_clk_sel_phys = 0x02088014,
+ .aux_clk_sel = 3,
+ .l2cpmr_iaddr = 0x4501,
+ .vreg[VREG_CORE] = { "krait0", 1300000, 1740000 },
+ .vreg[VREG_MEM] = { "krait0_mem", 1150000 },
+ .vreg[VREG_DIG] = { "krait0_dig", 1150000 },
+ .vreg[VREG_HFPLL_A] = { "krait0_hfpll", 1800000 },
+ },
+ [CPU1] = {
+ .hfpll_phys_base = 0x00903300,
+ .hfpll_data = &hfpll_data,
+ .aux_clk_sel_phys = 0x02098014,
+ .aux_clk_sel = 3,
+ .l2cpmr_iaddr = 0x5501,
+ .vreg[VREG_CORE] = { "krait1", 1300000, 1740000 },
+ .vreg[VREG_MEM] = { "krait1_mem", 1150000 },
+ .vreg[VREG_DIG] = { "krait1_dig", 1150000 },
+ .vreg[VREG_HFPLL_A] = { "krait1_hfpll", 1800000 },
+ },
+ [L2] = {
+ .hfpll_phys_base = 0x00903400,
+ .hfpll_data = &hfpll_data,
+ .aux_clk_sel_phys = 0x02011028,
+ .aux_clk_sel = 3,
+ .l2cpmr_iaddr = 0x0500,
+ .vreg[VREG_HFPLL_A] = { "l2_hfpll", 1800000 },
+ },
+};
+
+static struct msm_bus_paths bw_level_tbl[] = {
+ [0] = BW_MBPS(640), /* At least 80 MHz on bus. */
+ [1] = BW_MBPS(1064), /* At least 133 MHz on bus. */
+ [2] = BW_MBPS(1600), /* At least 200 MHz on bus. */
+ [3] = BW_MBPS(2128), /* At least 266 MHz on bus. */
+ [4] = BW_MBPS(3200), /* At least 400 MHz on bus. */
+ [5] = BW_MBPS(3600), /* At least 450 MHz on bus. */
+ [6] = BW_MBPS(3936), /* At least 492 MHz on bus. */
+ [7] = BW_MBPS(4264), /* At least 533 MHz on bus. */
+};
+
+static struct msm_bus_scale_pdata bus_scale_data = {
+ .usecase = bw_level_tbl,
+ .num_usecases = ARRAY_SIZE(bw_level_tbl),
+ .active_only = 1,
+ .name = "acpuclk-8930",
+};
+
+/* TODO: Update vdd_dig, vdd_mem and bw when data is available. */
+#define L2(x) (&l2_freq_tbl[(x)])
+static struct l2_level l2_freq_tbl[] = {
+ [0] = { {STBY_KHZ, QSB, 0, 0, 0x00 }, LVL_NOM, 1050000, 0 },
+ [1] = { { 384000, PLL_8, 0, 2, 0x00 }, LVL_NOM, 1050000, 1 },
+ [2] = { { 432000, HFPLL, 2, 0, 0x20 }, LVL_NOM, 1050000, 2 },
+ [3] = { { 486000, HFPLL, 2, 0, 0x24 }, LVL_NOM, 1050000, 2 },
+ [4] = { { 540000, HFPLL, 2, 0, 0x28 }, LVL_NOM, 1050000, 2 },
+ [5] = { { 594000, HFPLL, 1, 0, 0x16 }, LVL_NOM, 1050000, 2 },
+ [6] = { { 648000, HFPLL, 1, 0, 0x18 }, LVL_NOM, 1050000, 4 },
+ [7] = { { 702000, HFPLL, 1, 0, 0x1A }, LVL_NOM, 1050000, 4 },
+ [8] = { { 756000, HFPLL, 1, 0, 0x1C }, LVL_HIGH, 1150000, 4 },
+ [9] = { { 810000, HFPLL, 1, 0, 0x1E }, LVL_HIGH, 1150000, 4 },
+ [10] = { { 864000, HFPLL, 1, 0, 0x20 }, LVL_HIGH, 1150000, 4 },
+ [11] = { { 918000, HFPLL, 1, 0, 0x22 }, LVL_HIGH, 1150000, 7 },
+ [12] = { { 972000, HFPLL, 1, 0, 0x24 }, LVL_HIGH, 1150000, 7 },
+ [13] = { { 1026000, HFPLL, 1, 0, 0x26 }, LVL_HIGH, 1150000, 7 },
+ [14] = { { 1080000, HFPLL, 1, 0, 0x28 }, LVL_HIGH, 1150000, 7 },
+ [15] = { { 1134000, HFPLL, 1, 0, 0x2A }, LVL_HIGH, 1150000, 7 },
+ [16] = { { 1188000, HFPLL, 1, 0, 0x2C }, LVL_HIGH, 1150000, 7 },
+};
+
+static struct acpu_level acpu_freq_tbl_slow[] = {
+ { 0, { STBY_KHZ, QSB, 0, 0, 0x00 }, L2(0), 950000 },
+ { 1, { 384000, PLL_8, 0, 2, 0x00 }, L2(1), 950000 },
+ { 1, { 432000, HFPLL, 2, 0, 0x20 }, L2(6), 975000 },
+ { 1, { 486000, HFPLL, 2, 0, 0x24 }, L2(6), 975000 },
+ { 1, { 540000, HFPLL, 2, 0, 0x28 }, L2(6), 1000000 },
+ { 1, { 594000, HFPLL, 1, 0, 0x16 }, L2(6), 1000000 },
+ { 1, { 648000, HFPLL, 1, 0, 0x18 }, L2(6), 1025000 },
+ { 1, { 702000, HFPLL, 1, 0, 0x1A }, L2(6), 1025000 },
+ { 1, { 756000, HFPLL, 1, 0, 0x1C }, L2(11), 1075000 },
+ { 1, { 810000, HFPLL, 1, 0, 0x1E }, L2(11), 1075000 },
+ { 1, { 864000, HFPLL, 1, 0, 0x20 }, L2(11), 1100000 },
+ { 1, { 918000, HFPLL, 1, 0, 0x22 }, L2(11), 1100000 },
+ { 1, { 972000, HFPLL, 1, 0, 0x24 }, L2(11), 1125000 },
+ { 1, { 1026000, HFPLL, 1, 0, 0x26 }, L2(11), 1125000 },
+ { 1, { 1080000, HFPLL, 1, 0, 0x28 }, L2(16), 1175000 },
+ { 1, { 1134000, HFPLL, 1, 0, 0x2A }, L2(16), 1175000 },
+ { 1, { 1188000, HFPLL, 1, 0, 0x2C }, L2(16), 1200000 },
+ { 0, { 0 } }
+};
+
+static struct acpu_level acpu_freq_tbl_nom[] = {
+ { 0, { STBY_KHZ, QSB, 0, 0, 0x00 }, L2(0), 925000 },
+ { 1, { 384000, PLL_8, 0, 2, 0x00 }, L2(1), 925000 },
+ { 1, { 432000, HFPLL, 2, 0, 0x20 }, L2(6), 950000 },
+ { 1, { 486000, HFPLL, 2, 0, 0x24 }, L2(6), 950000 },
+ { 1, { 540000, HFPLL, 2, 0, 0x28 }, L2(6), 975000 },
+ { 1, { 594000, HFPLL, 1, 0, 0x16 }, L2(6), 975000 },
+ { 1, { 648000, HFPLL, 1, 0, 0x18 }, L2(6), 1000000 },
+ { 1, { 702000, HFPLL, 1, 0, 0x1A }, L2(6), 1000000 },
+ { 1, { 756000, HFPLL, 1, 0, 0x1C }, L2(11), 1050000 },
+ { 1, { 810000, HFPLL, 1, 0, 0x1E }, L2(11), 1050000 },
+ { 1, { 864000, HFPLL, 1, 0, 0x20 }, L2(11), 1075000 },
+ { 1, { 918000, HFPLL, 1, 0, 0x22 }, L2(11), 1075000 },
+ { 1, { 972000, HFPLL, 1, 0, 0x24 }, L2(11), 1100000 },
+ { 1, { 1026000, HFPLL, 1, 0, 0x26 }, L2(11), 1100000 },
+ { 1, { 1080000, HFPLL, 1, 0, 0x28 }, L2(16), 1150000 },
+ { 1, { 1134000, HFPLL, 1, 0, 0x2A }, L2(16), 1150000 },
+ { 1, { 1188000, HFPLL, 1, 0, 0x2C }, L2(16), 1175000 },
+ { 0, { 0 } }
+};
+
+static struct acpu_level acpu_freq_tbl_fast[] = {
+ { 0, { STBY_KHZ, QSB, 0, 0, 0x00 }, L2(0), 900000 },
+ { 1, { 384000, PLL_8, 0, 2, 0x00 }, L2(1), 900000 },
+ { 1, { 432000, HFPLL, 2, 0, 0x20 }, L2(6), 900000 },
+ { 1, { 486000, HFPLL, 2, 0, 0x24 }, L2(6), 900000 },
+ { 1, { 540000, HFPLL, 2, 0, 0x28 }, L2(6), 925000 },
+ { 1, { 594000, HFPLL, 1, 0, 0x16 }, L2(6), 925000 },
+ { 1, { 648000, HFPLL, 1, 0, 0x18 }, L2(6), 950000 },
+ { 1, { 702000, HFPLL, 1, 0, 0x1A }, L2(6), 950000 },
+ { 1, { 756000, HFPLL, 1, 0, 0x1C }, L2(11), 1000000 },
+ { 1, { 810000, HFPLL, 1, 0, 0x1E }, L2(11), 1000000 },
+ { 1, { 864000, HFPLL, 1, 0, 0x20 }, L2(11), 1025000 },
+ { 1, { 918000, HFPLL, 1, 0, 0x22 }, L2(11), 1025000 },
+ { 1, { 972000, HFPLL, 1, 0, 0x24 }, L2(11), 1050000 },
+ { 1, { 1026000, HFPLL, 1, 0, 0x26 }, L2(11), 1050000 },
+ { 1, { 1080000, HFPLL, 1, 0, 0x28 }, L2(16), 1100000 },
+ { 1, { 1134000, HFPLL, 1, 0, 0x2A }, L2(16), 1100000 },
+ { 1, { 1188000, HFPLL, 1, 0, 0x2C }, L2(16), 1125000 },
+ { 0, { 0 } }
+};
+
+static struct acpuclk_krait_params acpuclk_8930_params = {
+ .scalable = scalable,
+ .pvs_acpu_freq_tbl[PVS_SLOW] = acpu_freq_tbl_slow,
+ .pvs_acpu_freq_tbl[PVS_NOMINAL] = acpu_freq_tbl_nom,
+ .pvs_acpu_freq_tbl[PVS_FAST] = acpu_freq_tbl_fast,
+ .l2_freq_tbl = l2_freq_tbl,
+ .l2_freq_tbl_size = ARRAY_SIZE(l2_freq_tbl),
+ .bus_scale_data = &bus_scale_data,
+ .qfprom_phys_base = 0x00700000,
+};
+
+static int __init acpuclk_8930_probe(struct platform_device *pdev)
+{
+ return acpuclk_krait_init(&pdev->dev, &acpuclk_8930_params);
+}
+
+static struct platform_driver acpuclk_8930_driver = {
+ .driver = {
+ .name = "acpuclk-8930",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init acpuclk_8930_init(void)
+{
+ return platform_driver_probe(&acpuclk_8930_driver,
+ acpuclk_8930_probe);
+}
+device_initcall(acpuclk_8930_init);