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openwrt-xburst/target/linux/brcm47xx/patches-2.6.28/810-ssb-add-pmu-support.patch
hauke 90fac27f2a [brcm47xx] refresh patches and configuration 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14722 3c298f89-4303-0410-b956-a3cf2f4a3e73
2009-03-01 20:19:55 +00:00

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Sent to mainline on 2009 Feb 03.
For further modifications, please use separate patch files. This simpifies
keeping track of what is upstream and what is not. Thanks.
--mb
--- a/drivers/ssb/Makefile
+++ b/drivers/ssb/Makefile
@@ -9,6 +9,7 @@ ssb-$(CONFIG_SSB_PCMCIAHOST) += pcmcia.
# built-in drivers
ssb-y += driver_chipcommon.o
+ssb-y += driver_chipcommon_pmu.o
ssb-$(CONFIG_SSB_DRIVER_MIPS) += driver_mipscore.o
ssb-$(CONFIG_SSB_DRIVER_EXTIF) += driver_extif.o
ssb-$(CONFIG_SSB_DRIVER_PCICORE) += driver_pcicore.o
--- /dev/null
+++ b/drivers/ssb/driver_chipcommon_pmu.c
@@ -0,0 +1,508 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom ChipCommon Power Management Unit driver
+ *
+ * Copyright 2009, Michael Buesch <mb@bu3sch.de>
+ * Copyright 2007, Broadcom Corporation
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+
+#include <linux/ssb/ssb.h>
+#include <linux/ssb/ssb_regs.h>
+#include <linux/ssb/ssb_driver_chipcommon.h>
+#include <linux/delay.h>
+
+#include "ssb_private.h"
+
+static u32 ssb_chipco_pll_read(struct ssb_chipcommon *cc, u32 offset)
+{
+ chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
+ return chipco_read32(cc, SSB_CHIPCO_PLLCTL_DATA);
+}
+
+static void ssb_chipco_pll_write(struct ssb_chipcommon *cc,
+ u32 offset, u32 value)
+{
+ chipco_write32(cc, SSB_CHIPCO_PLLCTL_ADDR, offset);
+ chipco_write32(cc, SSB_CHIPCO_PLLCTL_DATA, value);
+}
+
+struct pmu0_plltab_entry {
+ u16 freq; /* Crystal frequency in kHz.*/
+ u8 xf; /* Crystal frequency value for PMU control */
+ u8 wb_int;
+ u32 wb_frac;
+};
+
+static const struct pmu0_plltab_entry pmu0_plltab[] = {
+ { .freq = 12000, .xf = 1, .wb_int = 73, .wb_frac = 349525, },
+ { .freq = 13000, .xf = 2, .wb_int = 67, .wb_frac = 725937, },
+ { .freq = 14400, .xf = 3, .wb_int = 61, .wb_frac = 116508, },
+ { .freq = 15360, .xf = 4, .wb_int = 57, .wb_frac = 305834, },
+ { .freq = 16200, .xf = 5, .wb_int = 54, .wb_frac = 336579, },
+ { .freq = 16800, .xf = 6, .wb_int = 52, .wb_frac = 399457, },
+ { .freq = 19200, .xf = 7, .wb_int = 45, .wb_frac = 873813, },
+ { .freq = 19800, .xf = 8, .wb_int = 44, .wb_frac = 466033, },
+ { .freq = 20000, .xf = 9, .wb_int = 44, .wb_frac = 0, },
+ { .freq = 25000, .xf = 10, .wb_int = 70, .wb_frac = 419430, },
+ { .freq = 26000, .xf = 11, .wb_int = 67, .wb_frac = 725937, },
+ { .freq = 30000, .xf = 12, .wb_int = 58, .wb_frac = 699050, },
+ { .freq = 38400, .xf = 13, .wb_int = 45, .wb_frac = 873813, },
+ { .freq = 40000, .xf = 14, .wb_int = 45, .wb_frac = 0, },
+};
+#define SSB_PMU0_DEFAULT_XTALFREQ 20000
+
+static const struct pmu0_plltab_entry * pmu0_plltab_find_entry(u32 crystalfreq)
+{
+ const struct pmu0_plltab_entry *e;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(pmu0_plltab); i++) {
+ e = &pmu0_plltab[i];
+ if (e->freq == crystalfreq)
+ return e;
+ }
+
+ return NULL;
+}
+
+/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
+static void ssb_pmu0_pllinit_r0(struct ssb_chipcommon *cc,
+ u32 crystalfreq)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ const struct pmu0_plltab_entry *e = NULL;
+ u32 pmuctl, tmp, pllctl;
+ unsigned int i;
+
+ if ((bus->chip_id == 0x5354) && !crystalfreq) {
+ /* The 5354 crystal freq is 25MHz */
+ crystalfreq = 25000;
+ }
+ if (crystalfreq)
+ e = pmu0_plltab_find_entry(crystalfreq);
+ if (!e)
+ e = pmu0_plltab_find_entry(SSB_PMU0_DEFAULT_XTALFREQ);
+ BUG_ON(!e);
+ crystalfreq = e->freq;
+ cc->pmu.crystalfreq = e->freq;
+
+ /* Check if the PLL already is programmed to this frequency. */
+ pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+ if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
+ /* We're already there... */
+ return;
+ }
+
+ ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
+ (crystalfreq / 1000), (crystalfreq % 1000));
+
+ /* First turn the PLL off. */
+ switch (bus->chip_id) {
+ case 0x4328:
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+ ~(1 << SSB_PMURES_4328_BB_PLL_PU));
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+ ~(1 << SSB_PMURES_4328_BB_PLL_PU));
+ break;
+ case 0x5354:
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+ ~(1 << SSB_PMURES_5354_BB_PLL_PU));
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+ ~(1 << SSB_PMURES_5354_BB_PLL_PU));
+ break;
+ default:
+ SSB_WARN_ON(1);
+ }
+ for (i = 1500; i; i--) {
+ tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+ if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
+ break;
+ udelay(10);
+ }
+ tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+ if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
+ ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");
+
+ /* Set PDIV in PLL control 0. */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL0);
+ if (crystalfreq >= SSB_PMU0_PLLCTL0_PDIV_FREQ)
+ pllctl |= SSB_PMU0_PLLCTL0_PDIV_MSK;
+ else
+ pllctl &= ~SSB_PMU0_PLLCTL0_PDIV_MSK;
+ ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL0, pllctl);
+
+ /* Set WILD in PLL control 1. */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL1);
+ pllctl &= ~SSB_PMU0_PLLCTL1_STOPMOD;
+ pllctl &= ~(SSB_PMU0_PLLCTL1_WILD_IMSK | SSB_PMU0_PLLCTL1_WILD_FMSK);
+ pllctl |= ((u32)e->wb_int << SSB_PMU0_PLLCTL1_WILD_IMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_IMSK;
+ pllctl |= ((u32)e->wb_frac << SSB_PMU0_PLLCTL1_WILD_FMSK_SHIFT) & SSB_PMU0_PLLCTL1_WILD_FMSK;
+ if (e->wb_frac == 0)
+ pllctl |= SSB_PMU0_PLLCTL1_STOPMOD;
+ ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL1, pllctl);
+
+ /* Set WILD in PLL control 2. */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU0_PLLCTL2);
+ pllctl &= ~SSB_PMU0_PLLCTL2_WILD_IMSKHI;
+ pllctl |= (((u32)e->wb_int >> 4) << SSB_PMU0_PLLCTL2_WILD_IMSKHI_SHIFT) & SSB_PMU0_PLLCTL2_WILD_IMSKHI;
+ ssb_chipco_pll_write(cc, SSB_PMU0_PLLCTL2, pllctl);
+
+ /* Set the crystalfrequency and the divisor. */
+ pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+ pmuctl &= ~SSB_CHIPCO_PMU_CTL_ILP_DIV;
+ pmuctl |= (((crystalfreq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
+ & SSB_CHIPCO_PMU_CTL_ILP_DIV;
+ pmuctl &= ~SSB_CHIPCO_PMU_CTL_XTALFREQ;
+ pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
+ chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
+}
+
+struct pmu1_plltab_entry {
+ u16 freq; /* Crystal frequency in kHz.*/
+ u8 xf; /* Crystal frequency value for PMU control */
+ u8 ndiv_int;
+ u32 ndiv_frac;
+ u8 p1div;
+ u8 p2div;
+};
+
+static const struct pmu1_plltab_entry pmu1_plltab[] = {
+ { .freq = 12000, .xf = 1, .p1div = 3, .p2div = 22, .ndiv_int = 0x9, .ndiv_frac = 0xFFFFEF, },
+ { .freq = 13000, .xf = 2, .p1div = 1, .p2div = 6, .ndiv_int = 0xb, .ndiv_frac = 0x483483, },
+ { .freq = 14400, .xf = 3, .p1div = 1, .p2div = 10, .ndiv_int = 0xa, .ndiv_frac = 0x1C71C7, },
+ { .freq = 15360, .xf = 4, .p1div = 1, .p2div = 5, .ndiv_int = 0xb, .ndiv_frac = 0x755555, },
+ { .freq = 16200, .xf = 5, .p1div = 1, .p2div = 10, .ndiv_int = 0x5, .ndiv_frac = 0x6E9E06, },
+ { .freq = 16800, .xf = 6, .p1div = 1, .p2div = 10, .ndiv_int = 0x5, .ndiv_frac = 0x3CF3CF, },
+ { .freq = 19200, .xf = 7, .p1div = 1, .p2div = 9, .ndiv_int = 0x5, .ndiv_frac = 0x17B425, },
+ { .freq = 19800, .xf = 8, .p1div = 1, .p2div = 11, .ndiv_int = 0x4, .ndiv_frac = 0xA57EB, },
+ { .freq = 20000, .xf = 9, .p1div = 1, .p2div = 11, .ndiv_int = 0x4, .ndiv_frac = 0, },
+ { .freq = 24000, .xf = 10, .p1div = 3, .p2div = 11, .ndiv_int = 0xa, .ndiv_frac = 0, },
+ { .freq = 25000, .xf = 11, .p1div = 5, .p2div = 16, .ndiv_int = 0xb, .ndiv_frac = 0, },
+ { .freq = 26000, .xf = 12, .p1div = 1, .p2div = 2, .ndiv_int = 0x10, .ndiv_frac = 0xEC4EC4, },
+ { .freq = 30000, .xf = 13, .p1div = 3, .p2div = 8, .ndiv_int = 0xb, .ndiv_frac = 0, },
+ { .freq = 38400, .xf = 14, .p1div = 1, .p2div = 5, .ndiv_int = 0x4, .ndiv_frac = 0x955555, },
+ { .freq = 40000, .xf = 15, .p1div = 1, .p2div = 2, .ndiv_int = 0xb, .ndiv_frac = 0, },
+};
+
+#define SSB_PMU1_DEFAULT_XTALFREQ 15360
+
+static const struct pmu1_plltab_entry * pmu1_plltab_find_entry(u32 crystalfreq)
+{
+ const struct pmu1_plltab_entry *e;
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(pmu1_plltab); i++) {
+ e = &pmu1_plltab[i];
+ if (e->freq == crystalfreq)
+ return e;
+ }
+
+ return NULL;
+}
+
+/* Tune the PLL to the crystal speed. crystalfreq is in kHz. */
+static void ssb_pmu1_pllinit_r0(struct ssb_chipcommon *cc,
+ u32 crystalfreq)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ const struct pmu1_plltab_entry *e = NULL;
+ u32 buffer_strength = 0;
+ u32 tmp, pllctl, pmuctl;
+ unsigned int i;
+
+ if (bus->chip_id == 0x4312) {
+ /* We do not touch the BCM4312 PLL and assume
+ * the default crystal settings work out-of-the-box. */
+ cc->pmu.crystalfreq = 20000;
+ return;
+ }
+
+ if (crystalfreq)
+ e = pmu1_plltab_find_entry(crystalfreq);
+ if (!e)
+ e = pmu1_plltab_find_entry(SSB_PMU1_DEFAULT_XTALFREQ);
+ BUG_ON(!e);
+ crystalfreq = e->freq;
+ cc->pmu.crystalfreq = e->freq;
+
+ /* Check if the PLL already is programmed to this frequency. */
+ pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+ if (((pmuctl & SSB_CHIPCO_PMU_CTL_XTALFREQ) >> SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) == e->xf) {
+ /* We're already there... */
+ return;
+ }
+
+ ssb_printk(KERN_INFO PFX "Programming PLL to %u.%03u MHz\n",
+ (crystalfreq / 1000), (crystalfreq % 1000));
+
+ /* First turn the PLL off. */
+ switch (bus->chip_id) {
+ case 0x4325:
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MINRES_MSK,
+ ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
+ (1 << SSB_PMURES_4325_HT_AVAIL)));
+ chipco_mask32(cc, SSB_CHIPCO_PMU_MAXRES_MSK,
+ ~((1 << SSB_PMURES_4325_BBPLL_PWRSW_PU) |
+ (1 << SSB_PMURES_4325_HT_AVAIL)));
+ /* Adjust the BBPLL to 2 on all channels later. */
+ buffer_strength = 0x222222;
+ break;
+ default:
+ SSB_WARN_ON(1);
+ }
+ for (i = 1500; i; i--) {
+ tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+ if (!(tmp & SSB_CHIPCO_CLKCTLST_HAVEHT))
+ break;
+ udelay(10);
+ }
+ tmp = chipco_read32(cc, SSB_CHIPCO_CLKCTLST);
+ if (tmp & SSB_CHIPCO_CLKCTLST_HAVEHT)
+ ssb_printk(KERN_EMERG PFX "Failed to turn the PLL off!\n");
+
+ /* Set p1div and p2div. */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL0);
+ pllctl &= ~(SSB_PMU1_PLLCTL0_P1DIV | SSB_PMU1_PLLCTL0_P2DIV);
+ pllctl |= ((u32)e->p1div << SSB_PMU1_PLLCTL0_P1DIV_SHIFT) & SSB_PMU1_PLLCTL0_P1DIV;
+ pllctl |= ((u32)e->p2div << SSB_PMU1_PLLCTL0_P2DIV_SHIFT) & SSB_PMU1_PLLCTL0_P2DIV;
+ ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL0, pllctl);
+
+ /* Set ndiv int and ndiv mode */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL2);
+ pllctl &= ~(SSB_PMU1_PLLCTL2_NDIVINT | SSB_PMU1_PLLCTL2_NDIVMODE);
+ pllctl |= ((u32)e->ndiv_int << SSB_PMU1_PLLCTL2_NDIVINT_SHIFT) & SSB_PMU1_PLLCTL2_NDIVINT;
+ pllctl |= (1 << SSB_PMU1_PLLCTL2_NDIVMODE_SHIFT) & SSB_PMU1_PLLCTL2_NDIVMODE;
+ ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL2, pllctl);
+
+ /* Set ndiv frac */
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL3);
+ pllctl &= ~SSB_PMU1_PLLCTL3_NDIVFRAC;
+ pllctl |= ((u32)e->ndiv_frac << SSB_PMU1_PLLCTL3_NDIVFRAC_SHIFT) & SSB_PMU1_PLLCTL3_NDIVFRAC;
+ ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL3, pllctl);
+
+ /* Change the drive strength, if required. */
+ if (buffer_strength) {
+ pllctl = ssb_chipco_pll_read(cc, SSB_PMU1_PLLCTL5);
+ pllctl &= ~SSB_PMU1_PLLCTL5_CLKDRV;
+ pllctl |= (buffer_strength << SSB_PMU1_PLLCTL5_CLKDRV_SHIFT) & SSB_PMU1_PLLCTL5_CLKDRV;
+ ssb_chipco_pll_write(cc, SSB_PMU1_PLLCTL5, pllctl);
+ }
+
+ /* Tune the crystalfreq and the divisor. */
+ pmuctl = chipco_read32(cc, SSB_CHIPCO_PMU_CTL);
+ pmuctl &= ~(SSB_CHIPCO_PMU_CTL_ILP_DIV | SSB_CHIPCO_PMU_CTL_XTALFREQ);
+ pmuctl |= ((((u32)e->freq + 127) / 128 - 1) << SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT)
+ & SSB_CHIPCO_PMU_CTL_ILP_DIV;
+ pmuctl |= ((u32)e->xf << SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT) & SSB_CHIPCO_PMU_CTL_XTALFREQ;
+ chipco_write32(cc, SSB_CHIPCO_PMU_CTL, pmuctl);
+}
+
+static void ssb_pmu_pll_init(struct ssb_chipcommon *cc)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ u32 crystalfreq = 0; /* in kHz. 0 = keep default freq. */
+
+ if (bus->bustype == SSB_BUSTYPE_SSB) {
+ /* TODO: The user may override the crystal frequency. */
+ }
+
+ switch (bus->chip_id) {
+ case 0x4312:
+ case 0x4325:
+ ssb_pmu1_pllinit_r0(cc, crystalfreq);
+ break;
+ case 0x4328:
+ case 0x5354:
+ ssb_pmu0_pllinit_r0(cc, crystalfreq);
+ break;
+ default:
+ ssb_printk(KERN_ERR PFX
+ "ERROR: PLL init unknown for device %04X\n",
+ bus->chip_id);
+ }
+}
+
+struct pmu_res_updown_tab_entry {
+ u8 resource; /* The resource number */
+ u16 updown; /* The updown value */
+};
+
+enum pmu_res_depend_tab_task {
+ PMU_RES_DEP_SET = 1,
+ PMU_RES_DEP_ADD,
+ PMU_RES_DEP_REMOVE,
+};
+
+struct pmu_res_depend_tab_entry {
+ u8 resource; /* The resource number */
+ u8 task; /* SET | ADD | REMOVE */
+ u32 depend; /* The depend mask */
+};
+
+static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4328a0[] = {
+ { .resource = SSB_PMURES_4328_EXT_SWITCHER_PWM, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_BB_SWITCHER_PWM, .updown = 0x1F01, },
+ { .resource = SSB_PMURES_4328_BB_SWITCHER_BURST, .updown = 0x010F, },
+ { .resource = SSB_PMURES_4328_BB_EXT_SWITCHER_BURST, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_ILP_REQUEST, .updown = 0x0202, },
+ { .resource = SSB_PMURES_4328_RADIO_SWITCHER_PWM, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_RADIO_SWITCHER_BURST, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_ROM_SWITCH, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_PA_REF_LDO, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_RADIO_LDO, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_AFE_LDO, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_PLL_LDO, .updown = 0x0F01, },
+ { .resource = SSB_PMURES_4328_BG_FILTBYP, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_TX_FILTBYP, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_RX_FILTBYP, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_XTAL_PU, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_XTAL_EN, .updown = 0xA001, },
+ { .resource = SSB_PMURES_4328_BB_PLL_FILTBYP, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_RF_PLL_FILTBYP, .updown = 0x0101, },
+ { .resource = SSB_PMURES_4328_BB_PLL_PU, .updown = 0x0701, },
+};
+
+static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4328a0[] = {
+ {
+ /* Adjust ILP Request to avoid forcing EXT/BB into burst mode. */
+ .resource = SSB_PMURES_4328_ILP_REQUEST,
+ .task = PMU_RES_DEP_SET,
+ .depend = ((1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
+ (1 << SSB_PMURES_4328_BB_SWITCHER_PWM)),
+ },
+};
+
+static const struct pmu_res_updown_tab_entry pmu_res_updown_tab_4325a0[] = {
+ { .resource = SSB_PMURES_4325_XTAL_PU, .updown = 0x1501, },
+};
+
+static const struct pmu_res_depend_tab_entry pmu_res_depend_tab_4325a0[] = {
+ {
+ /* Adjust HT-Available dependencies. */
+ .resource = SSB_PMURES_4325_HT_AVAIL,
+ .task = PMU_RES_DEP_ADD,
+ .depend = ((1 << SSB_PMURES_4325_RX_PWRSW_PU) |
+ (1 << SSB_PMURES_4325_TX_PWRSW_PU) |
+ (1 << SSB_PMURES_4325_LOGEN_PWRSW_PU) |
+ (1 << SSB_PMURES_4325_AFE_PWRSW_PU)),
+ },
+};
+
+static void ssb_pmu_resources_init(struct ssb_chipcommon *cc)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ u32 min_msk = 0, max_msk = 0;
+ unsigned int i;
+ const struct pmu_res_updown_tab_entry *updown_tab = NULL;
+ unsigned int updown_tab_size;
+ const struct pmu_res_depend_tab_entry *depend_tab = NULL;
+ unsigned int depend_tab_size;
+
+ switch (bus->chip_id) {
+ case 0x4312:
+ /* We keep the default settings:
+ * min_msk = 0xCBB
+ * max_msk = 0x7FFFF
+ */
+ break;
+ case 0x4325:
+ /* Power OTP down later. */
+ min_msk = (1 << SSB_PMURES_4325_CBUCK_BURST) |
+ (1 << SSB_PMURES_4325_LNLDO2_PU);
+ if (chipco_read32(cc, SSB_CHIPCO_CHIPSTAT) &
+ SSB_CHIPCO_CHST_4325_PMUTOP_2B)
+ min_msk |= (1 << SSB_PMURES_4325_CLDO_CBUCK_BURST);
+ /* The PLL may turn on, if it decides so. */
+ max_msk = 0xFFFFF;
+ updown_tab = pmu_res_updown_tab_4325a0;
+ updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4325a0);
+ depend_tab = pmu_res_depend_tab_4325a0;
+ depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4325a0);
+ break;
+ case 0x4328:
+ min_msk = (1 << SSB_PMURES_4328_EXT_SWITCHER_PWM) |
+ (1 << SSB_PMURES_4328_BB_SWITCHER_PWM) |
+ (1 << SSB_PMURES_4328_XTAL_EN);
+ /* The PLL may turn on, if it decides so. */
+ max_msk = 0xFFFFF;
+ updown_tab = pmu_res_updown_tab_4328a0;
+ updown_tab_size = ARRAY_SIZE(pmu_res_updown_tab_4328a0);
+ depend_tab = pmu_res_depend_tab_4328a0;
+ depend_tab_size = ARRAY_SIZE(pmu_res_depend_tab_4328a0);
+ break;
+ case 0x5354:
+ /* The PLL may turn on, if it decides so. */
+ max_msk = 0xFFFFF;
+ break;
+ default:
+ ssb_printk(KERN_ERR PFX
+ "ERROR: PMU resource config unknown for device %04X\n",
+ bus->chip_id);
+ }
+
+ if (updown_tab) {
+ for (i = 0; i < updown_tab_size; i++) {
+ chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
+ updown_tab[i].resource);
+ chipco_write32(cc, SSB_CHIPCO_PMU_RES_UPDNTM,
+ updown_tab[i].updown);
+ }
+ }
+ if (depend_tab) {
+ for (i = 0; i < depend_tab_size; i++) {
+ chipco_write32(cc, SSB_CHIPCO_PMU_RES_TABSEL,
+ depend_tab[i].resource);
+ switch (depend_tab[i].task) {
+ case PMU_RES_DEP_SET:
+ chipco_write32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+ depend_tab[i].depend);
+ break;
+ case PMU_RES_DEP_ADD:
+ chipco_set32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+ depend_tab[i].depend);
+ break;
+ case PMU_RES_DEP_REMOVE:
+ chipco_mask32(cc, SSB_CHIPCO_PMU_RES_DEPMSK,
+ ~(depend_tab[i].depend));
+ break;
+ default:
+ SSB_WARN_ON(1);
+ }
+ }
+ }
+
+ /* Set the resource masks. */
+ if (min_msk)
+ chipco_write32(cc, SSB_CHIPCO_PMU_MINRES_MSK, min_msk);
+ if (max_msk)
+ chipco_write32(cc, SSB_CHIPCO_PMU_MAXRES_MSK, max_msk);
+}
+
+void ssb_pmu_init(struct ssb_chipcommon *cc)
+{
+ struct ssb_bus *bus = cc->dev->bus;
+ u32 pmucap;
+
+ if (!(cc->capabilities & SSB_CHIPCO_CAP_PMU))
+ return;
+
+ pmucap = chipco_read32(cc, SSB_CHIPCO_PMU_CAP);
+ cc->pmu.rev = (pmucap & SSB_CHIPCO_PMU_CAP_REVISION);
+
+ ssb_dprintk(KERN_DEBUG PFX "Found rev %u PMU (capabilities 0x%08X)\n",
+ cc->pmu.rev, pmucap);
+
+ if (cc->pmu.rev >= 1) {
+ if ((bus->chip_id == 0x4325) && (bus->chip_rev < 2)) {
+ chipco_mask32(cc, SSB_CHIPCO_PMU_CTL,
+ ~SSB_CHIPCO_PMU_CTL_NOILPONW);
+ } else {
+ chipco_set32(cc, SSB_CHIPCO_PMU_CTL,
+ SSB_CHIPCO_PMU_CTL_NOILPONW);
+ }
+ }
+ ssb_pmu_pll_init(cc);
+ ssb_pmu_resources_init(cc);
+}
--- a/drivers/ssb/driver_chipcommon.c
+++ b/drivers/ssb/driver_chipcommon.c
@@ -26,19 +26,6 @@ enum ssb_clksrc {
};
-static inline u32 chipco_read32(struct ssb_chipcommon *cc,
- u16 offset)
-{
- return ssb_read32(cc->dev, offset);
-}
-
-static inline void chipco_write32(struct ssb_chipcommon *cc,
- u16 offset,
- u32 value)
-{
- ssb_write32(cc->dev, offset, value);
-}
-
static inline u32 chipco_write32_masked(struct ssb_chipcommon *cc, u16 offset,
u32 mask, u32 value)
{
@@ -246,6 +233,7 @@ void ssb_chipcommon_init(struct ssb_chip
{
if (!cc->dev)
return; /* We don't have a ChipCommon */
+ ssb_pmu_init(cc);
chipco_powercontrol_init(cc);
ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
calc_fast_powerup_delay(cc);
--- a/include/linux/ssb/ssb_driver_chipcommon.h
+++ b/include/linux/ssb/ssb_driver_chipcommon.h
@@ -181,6 +181,16 @@
#define SSB_CHIPCO_PROG_WAITCNT 0x0124
#define SSB_CHIPCO_FLASH_CFG 0x0128
#define SSB_CHIPCO_FLASH_WAITCNT 0x012C
+#define SSB_CHIPCO_CLKCTLST 0x01E0 /* Clock control and status (rev >= 20) */
+#define SSB_CHIPCO_CLKCTLST_FORCEALP 0x00000001 /* Force ALP request */
+#define SSB_CHIPCO_CLKCTLST_FORCEHT 0x00000002 /* Force HT request */
+#define SSB_CHIPCO_CLKCTLST_FORCEILP 0x00000004 /* Force ILP request */
+#define SSB_CHIPCO_CLKCTLST_HAVEALPREQ 0x00000008 /* ALP available request */
+#define SSB_CHIPCO_CLKCTLST_HAVEHTREQ 0x00000010 /* HT available request */
+#define SSB_CHIPCO_CLKCTLST_HWCROFF 0x00000020 /* Force HW clock request off */
+#define SSB_CHIPCO_CLKCTLST_HAVEHT 0x00010000 /* HT available */
+#define SSB_CHIPCO_CLKCTLST_HAVEALP 0x00020000 /* APL available */
+#define SSB_CHIPCO_HW_WORKAROUND 0x01E4 /* Hardware workaround (rev >= 20) */
#define SSB_CHIPCO_UART0_DATA 0x0300
#define SSB_CHIPCO_UART0_IMR 0x0304
#define SSB_CHIPCO_UART0_FCR 0x0308
@@ -197,6 +207,196 @@
#define SSB_CHIPCO_UART1_LSR 0x0414
#define SSB_CHIPCO_UART1_MSR 0x0418
#define SSB_CHIPCO_UART1_SCRATCH 0x041C
+/* PMU registers (rev >= 20) */
+#define SSB_CHIPCO_PMU_CTL 0x0600 /* PMU control */
+#define SSB_CHIPCO_PMU_CTL_ILP_DIV 0xFFFF0000 /* ILP div mask */
+#define SSB_CHIPCO_PMU_CTL_ILP_DIV_SHIFT 16
+#define SSB_CHIPCO_PMU_CTL_NOILPONW 0x00000200 /* No ILP on wait */
+#define SSB_CHIPCO_PMU_CTL_HTREQEN 0x00000100 /* HT req enable */
+#define SSB_CHIPCO_PMU_CTL_ALPREQEN 0x00000080 /* ALP req enable */
+#define SSB_CHIPCO_PMU_CTL_XTALFREQ 0x0000007C /* Crystal freq */
+#define SSB_CHIPCO_PMU_CTL_XTALFREQ_SHIFT 2
+#define SSB_CHIPCO_PMU_CTL_ILPDIVEN 0x00000002 /* ILP div enable */
+#define SSB_CHIPCO_PMU_CTL_LPOSEL 0x00000001 /* LPO sel */
+#define SSB_CHIPCO_PMU_CAP 0x0604 /* PMU capabilities */
+#define SSB_CHIPCO_PMU_CAP_REVISION 0x000000FF /* Revision mask */
+#define SSB_CHIPCO_PMU_STAT 0x0608 /* PMU status */
+#define SSB_CHIPCO_PMU_STAT_INTPEND 0x00000040 /* Interrupt pending */
+#define SSB_CHIPCO_PMU_STAT_SBCLKST 0x00000030 /* Backplane clock status? */
+#define SSB_CHIPCO_PMU_STAT_HAVEALP 0x00000008 /* ALP available */
+#define SSB_CHIPCO_PMU_STAT_HAVEHT 0x00000004 /* HT available */
+#define SSB_CHIPCO_PMU_STAT_RESINIT 0x00000003 /* Res init */
+#define SSB_CHIPCO_PMU_RES_STAT 0x060C /* PMU res status */
+#define SSB_CHIPCO_PMU_RES_PEND 0x0610 /* PMU res pending */
+#define SSB_CHIPCO_PMU_TIMER 0x0614 /* PMU timer */
+#define SSB_CHIPCO_PMU_MINRES_MSK 0x0618 /* PMU min res mask */
+#define SSB_CHIPCO_PMU_MAXRES_MSK 0x061C /* PMU max res mask */
+#define SSB_CHIPCO_PMU_RES_TABSEL 0x0620 /* PMU res table sel */
+#define SSB_CHIPCO_PMU_RES_DEPMSK 0x0624 /* PMU res dep mask */
+#define SSB_CHIPCO_PMU_RES_UPDNTM 0x0628 /* PMU res updown timer */
+#define SSB_CHIPCO_PMU_RES_TIMER 0x062C /* PMU res timer */
+#define SSB_CHIPCO_PMU_CLKSTRETCH 0x0630 /* PMU clockstretch */
+#define SSB_CHIPCO_PMU_WATCHDOG 0x0634 /* PMU watchdog */
+#define SSB_CHIPCO_PMU_RES_REQTS 0x0640 /* PMU res req timer sel */
+#define SSB_CHIPCO_PMU_RES_REQT 0x0644 /* PMU res req timer */
+#define SSB_CHIPCO_PMU_RES_REQM 0x0648 /* PMU res req mask */
+#define SSB_CHIPCO_CHIPCTL_ADDR 0x0650
+#define SSB_CHIPCO_CHIPCTL_DATA 0x0654
+#define SSB_CHIPCO_REGCTL_ADDR 0x0658
+#define SSB_CHIPCO_REGCTL_DATA 0x065C
+#define SSB_CHIPCO_PLLCTL_ADDR 0x0660
+#define SSB_CHIPCO_PLLCTL_DATA 0x0664
+
+
+
+/** PMU PLL registers */
+
+/* PMU rev 0 PLL registers */
+#define SSB_PMU0_PLLCTL0 0
+#define SSB_PMU0_PLLCTL0_PDIV_MSK 0x00000001
+#define SSB_PMU0_PLLCTL0_PDIV_FREQ 25000 /* kHz */
+#define SSB_PMU0_PLLCTL1 1
+#define SSB_PMU0_PLLCTL1_WILD_IMSK 0xF0000000 /* Wild int mask (low nibble) */
+#define SSB_PMU0_PLLCTL1_WILD_IMSK_SHIFT 28
+#define SSB_PMU0_PLLCTL1_WILD_FMSK 0x0FFFFF00 /* Wild frac mask */
+#define SSB_PMU0_PLLCTL1_WILD_FMSK_SHIFT 8
+#define SSB_PMU0_PLLCTL1_STOPMOD 0x00000040 /* Stop mod */
+#define SSB_PMU0_PLLCTL2 2
+#define SSB_PMU0_PLLCTL2_WILD_IMSKHI 0x0000000F /* Wild int mask (high nibble) */
+#define SSB_PMU0_PLLCTL2_WILD_IMSKHI_SHIFT 0
+
+/* PMU rev 1 PLL registers */
+#define SSB_PMU1_PLLCTL0 0
+#define SSB_PMU1_PLLCTL0_P1DIV 0x00F00000 /* P1 div */
+#define SSB_PMU1_PLLCTL0_P1DIV_SHIFT 20
+#define SSB_PMU1_PLLCTL0_P2DIV 0x0F000000 /* P2 div */
+#define SSB_PMU1_PLLCTL0_P2DIV_SHIFT 24
+#define SSB_PMU1_PLLCTL1 1
+#define SSB_PMU1_PLLCTL1_M1DIV 0x000000FF /* M1 div */
+#define SSB_PMU1_PLLCTL1_M1DIV_SHIFT 0
+#define SSB_PMU1_PLLCTL1_M2DIV 0x0000FF00 /* M2 div */
+#define SSB_PMU1_PLLCTL1_M2DIV_SHIFT 8
+#define SSB_PMU1_PLLCTL1_M3DIV 0x00FF0000 /* M3 div */
+#define SSB_PMU1_PLLCTL1_M3DIV_SHIFT 16
+#define SSB_PMU1_PLLCTL1_M4DIV 0xFF000000 /* M4 div */
+#define SSB_PMU1_PLLCTL1_M4DIV_SHIFT 24
+#define SSB_PMU1_PLLCTL2 2
+#define SSB_PMU1_PLLCTL2_M5DIV 0x000000FF /* M5 div */
+#define SSB_PMU1_PLLCTL2_M5DIV_SHIFT 0
+#define SSB_PMU1_PLLCTL2_M6DIV 0x0000FF00 /* M6 div */
+#define SSB_PMU1_PLLCTL2_M6DIV_SHIFT 8
+#define SSB_PMU1_PLLCTL2_NDIVMODE 0x000E0000 /* NDIV mode */
+#define SSB_PMU1_PLLCTL2_NDIVMODE_SHIFT 17
+#define SSB_PMU1_PLLCTL2_NDIVINT 0x1FF00000 /* NDIV int */
+#define SSB_PMU1_PLLCTL2_NDIVINT_SHIFT 20
+#define SSB_PMU1_PLLCTL3 3
+#define SSB_PMU1_PLLCTL3_NDIVFRAC 0x00FFFFFF /* NDIV frac */
+#define SSB_PMU1_PLLCTL3_NDIVFRAC_SHIFT 0
+#define SSB_PMU1_PLLCTL4 4
+#define SSB_PMU1_PLLCTL5 5
+#define SSB_PMU1_PLLCTL5_CLKDRV 0xFFFFFF00 /* clk drv */
+#define SSB_PMU1_PLLCTL5_CLKDRV_SHIFT 8
+
+/* BCM4312 PLL resource numbers. */
+#define SSB_PMURES_4312_SWITCHER_BURST 0
+#define SSB_PMURES_4312_SWITCHER_PWM 1
+#define SSB_PMURES_4312_PA_REF_LDO 2
+#define SSB_PMURES_4312_CORE_LDO_BURST 3
+#define SSB_PMURES_4312_CORE_LDO_PWM 4
+#define SSB_PMURES_4312_RADIO_LDO 5
+#define SSB_PMURES_4312_ILP_REQUEST 6
+#define SSB_PMURES_4312_BG_FILTBYP 7
+#define SSB_PMURES_4312_TX_FILTBYP 8
+#define SSB_PMURES_4312_RX_FILTBYP 9
+#define SSB_PMURES_4312_XTAL_PU 10
+#define SSB_PMURES_4312_ALP_AVAIL 11
+#define SSB_PMURES_4312_BB_PLL_FILTBYP 12
+#define SSB_PMURES_4312_RF_PLL_FILTBYP 13
+#define SSB_PMURES_4312_HT_AVAIL 14
+
+/* BCM4325 PLL resource numbers. */
+#define SSB_PMURES_4325_BUCK_BOOST_BURST 0
+#define SSB_PMURES_4325_CBUCK_BURST 1
+#define SSB_PMURES_4325_CBUCK_PWM 2
+#define SSB_PMURES_4325_CLDO_CBUCK_BURST 3
+#define SSB_PMURES_4325_CLDO_CBUCK_PWM 4
+#define SSB_PMURES_4325_BUCK_BOOST_PWM 5
+#define SSB_PMURES_4325_ILP_REQUEST 6
+#define SSB_PMURES_4325_ABUCK_BURST 7
+#define SSB_PMURES_4325_ABUCK_PWM 8
+#define SSB_PMURES_4325_LNLDO1_PU 9
+#define SSB_PMURES_4325_LNLDO2_PU 10
+#define SSB_PMURES_4325_LNLDO3_PU 11
+#define SSB_PMURES_4325_LNLDO4_PU 12
+#define SSB_PMURES_4325_XTAL_PU 13
+#define SSB_PMURES_4325_ALP_AVAIL 14
+#define SSB_PMURES_4325_RX_PWRSW_PU 15
+#define SSB_PMURES_4325_TX_PWRSW_PU 16
+#define SSB_PMURES_4325_RFPLL_PWRSW_PU 17
+#define SSB_PMURES_4325_LOGEN_PWRSW_PU 18
+#define SSB_PMURES_4325_AFE_PWRSW_PU 19
+#define SSB_PMURES_4325_BBPLL_PWRSW_PU 20
+#define SSB_PMURES_4325_HT_AVAIL 21
+
+/* BCM4328 PLL resource numbers. */
+#define SSB_PMURES_4328_EXT_SWITCHER_PWM 0
+#define SSB_PMURES_4328_BB_SWITCHER_PWM 1
+#define SSB_PMURES_4328_BB_SWITCHER_BURST 2
+#define SSB_PMURES_4328_BB_EXT_SWITCHER_BURST 3
+#define SSB_PMURES_4328_ILP_REQUEST 4
+#define SSB_PMURES_4328_RADIO_SWITCHER_PWM 5
+#define SSB_PMURES_4328_RADIO_SWITCHER_BURST 6
+#define SSB_PMURES_4328_ROM_SWITCH 7
+#define SSB_PMURES_4328_PA_REF_LDO 8
+#define SSB_PMURES_4328_RADIO_LDO 9
+#define SSB_PMURES_4328_AFE_LDO 10
+#define SSB_PMURES_4328_PLL_LDO 11
+#define SSB_PMURES_4328_BG_FILTBYP 12
+#define SSB_PMURES_4328_TX_FILTBYP 13
+#define SSB_PMURES_4328_RX_FILTBYP 14
+#define SSB_PMURES_4328_XTAL_PU 15
+#define SSB_PMURES_4328_XTAL_EN 16
+#define SSB_PMURES_4328_BB_PLL_FILTBYP 17
+#define SSB_PMURES_4328_RF_PLL_FILTBYP 18
+#define SSB_PMURES_4328_BB_PLL_PU 19
+
+/* BCM5354 PLL resource numbers. */
+#define SSB_PMURES_5354_EXT_SWITCHER_PWM 0
+#define SSB_PMURES_5354_BB_SWITCHER_PWM 1
+#define SSB_PMURES_5354_BB_SWITCHER_BURST 2
+#define SSB_PMURES_5354_BB_EXT_SWITCHER_BURST 3
+#define SSB_PMURES_5354_ILP_REQUEST 4
+#define SSB_PMURES_5354_RADIO_SWITCHER_PWM 5
+#define SSB_PMURES_5354_RADIO_SWITCHER_BURST 6
+#define SSB_PMURES_5354_ROM_SWITCH 7
+#define SSB_PMURES_5354_PA_REF_LDO 8
+#define SSB_PMURES_5354_RADIO_LDO 9
+#define SSB_PMURES_5354_AFE_LDO 10
+#define SSB_PMURES_5354_PLL_LDO 11
+#define SSB_PMURES_5354_BG_FILTBYP 12
+#define SSB_PMURES_5354_TX_FILTBYP 13
+#define SSB_PMURES_5354_RX_FILTBYP 14
+#define SSB_PMURES_5354_XTAL_PU 15
+#define SSB_PMURES_5354_XTAL_EN 16
+#define SSB_PMURES_5354_BB_PLL_FILTBYP 17
+#define SSB_PMURES_5354_RF_PLL_FILTBYP 18
+#define SSB_PMURES_5354_BB_PLL_PU 19
+
+
+
+/** Chip specific Chip-Status register contents. */
+#define SSB_CHIPCO_CHST_4325_SPROM_OTP_SEL 0x00000003
+#define SSB_CHIPCO_CHST_4325_DEFCIS_SEL 0 /* OTP is powered up, use def. CIS, no SPROM */
+#define SSB_CHIPCO_CHST_4325_SPROM_SEL 1 /* OTP is powered up, SPROM is present */
+#define SSB_CHIPCO_CHST_4325_OTP_SEL 2 /* OTP is powered up, no SPROM */
+#define SSB_CHIPCO_CHST_4325_OTP_PWRDN 3 /* OTP is powered down, SPROM is present */
+#define SSB_CHIPCO_CHST_4325_SDIO_USB_MODE 0x00000004
+#define SSB_CHIPCO_CHST_4325_SDIO_USB_MODE_SHIFT 2
+#define SSB_CHIPCO_CHST_4325_RCAL_VALID 0x00000008
+#define SSB_CHIPCO_CHST_4325_RCAL_VALID_SHIFT 3
+#define SSB_CHIPCO_CHST_4325_RCAL_VALUE 0x000001F0
+#define SSB_CHIPCO_CHST_4325_RCAL_VALUE_SHIFT 4
+#define SSB_CHIPCO_CHST_4325_PMUTOP_2B 0x00000200 /* 1 for 2b, 0 for to 2a */
@@ -353,11 +553,20 @@
struct ssb_device;
struct ssb_serial_port;
+/* Data for the PMU, if available.
+ * Check availability with ((struct ssb_chipcommon)->capabilities & SSB_CHIPCO_CAP_PMU)
+ */
+struct ssb_chipcommon_pmu {
+ u8 rev; /* PMU revision */
+ u32 crystalfreq; /* The active crystal frequency (in kHz) */
+};
+
struct ssb_chipcommon {
struct ssb_device *dev;
u32 capabilities;
/* Fast Powerup Delay constant */
u16 fast_pwrup_delay;
+ struct ssb_chipcommon_pmu pmu;
};
static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
@@ -365,6 +574,17 @@ static inline bool ssb_chipco_available(
return (cc->dev != NULL);
}
+/* Register access */
+#define chipco_read32(cc, offset) ssb_read32((cc)->dev, offset)
+#define chipco_write32(cc, offset, val) ssb_write32((cc)->dev, offset, val)
+
+#define chipco_mask32(cc, offset, mask) \
+ chipco_write32(cc, offset, chipco_read32(cc, offset) & (mask))
+#define chipco_set32(cc, offset, set) \
+ chipco_write32(cc, offset, chipco_read32(cc, offset) | (set))
+#define chipco_maskset32(cc, offset, mask, set) \
+ chipco_write32(cc, offset, (chipco_read32(cc, offset) & (mask)) | (set))
+
extern void ssb_chipcommon_init(struct ssb_chipcommon *cc);
extern void ssb_chipco_suspend(struct ssb_chipcommon *cc);
@@ -406,4 +626,8 @@ extern int ssb_chipco_serial_init(struct
struct ssb_serial_port *ports);
#endif /* CONFIG_SSB_SERIAL */
+/* PMU support */
+extern void ssb_pmu_init(struct ssb_chipcommon *cc);
+
+
#endif /* LINUX_SSB_CHIPCO_H_ */
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