[PATCH 5/6] brcmfmac: add hostready indication

[Arend van Spriel]

From: Franky Lin <franky....@broadcom.com>

A hostready signal is introduced to inform firmware through mailbox
doorbell1 when common ring initialized or D3 exited.

Reviewed-by: Arend van Spriel <arend.vanspr...@broadcom.com>
Signed-off-by: Franky Lin <franky....@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspr...@broadcom.com>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c 
b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
index 9708647..71b69af 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -105,7 +105,8 @@ enum brcmf_pcie_state {
 #define BRCMF_PCIE_PCIE2REG_MAILBOXMASK                0x4C
 #define BRCMF_PCIE_PCIE2REG_CONFIGADDR         0x120
 #define BRCMF_PCIE_PCIE2REG_CONFIGDATA         0x124
-#define BRCMF_PCIE_PCIE2REG_H2D_MAILBOX                0x140
+#define BRCMF_PCIE_PCIE2REG_H2D_MAILBOX_0      0x140
+#define BRCMF_PCIE_PCIE2REG_H2D_MAILBOX_1      0x144
 
 #define BRCMF_PCIE2_INTA                       0x01
 #define BRCMF_PCIE2_INTB                       0x02
@@ -140,6 +141,7 @@ enum brcmf_pcie_state {
 #define BRCMF_PCIE_SHARED_VERSION_MASK         0x00FF
 #define BRCMF_PCIE_SHARED_DMA_INDEX            0x10000
 #define BRCMF_PCIE_SHARED_DMA_2B_IDX           0x100000
+#define BRCMF_PCIE_SHARED_HOSTRDY_DB1          0x10000000
 
 #define BRCMF_PCIE_FLAGS_HTOD_SPLIT            0x4000
 #define BRCMF_PCIE_FLAGS_DTOH_SPLIT            0x8000
@@ -782,6 +784,12 @@ static void brcmf_pcie_intr_enable(struct 
brcmf_pciedev_info *devinfo)
                               BRCMF_PCIE_MB_INT_FN0_1);
 }
 
+static void brcmf_pcie_hostready(struct brcmf_pciedev_info *devinfo)
+{
+       if (devinfo->shared.flags & BRCMF_PCIE_SHARED_HOSTRDY_DB1)
+               brcmf_pcie_write_reg32(devinfo,
+                                      BRCMF_PCIE_PCIE2REG_H2D_MAILBOX_1, 1);
+}
 
 static irqreturn_t brcmf_pcie_quick_check_isr(int irq, void *arg)
 {
@@ -924,7 +932,7 @@ static int brcmf_pcie_ring_mb_ring_bell(void *ctx)
 
        brcmf_dbg(PCIE, "RING !\n");
        /* Any arbitrary value will do, lets use 1 */
-       brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_H2D_MAILBOX, 1);
+       brcmf_pcie_write_reg32(devinfo, BRCMF_PCIE_PCIE2REG_H2D_MAILBOX_0, 1);
 
        return 0;
 }
@@ -1728,6 +1736,7 @@ static void brcmf_pcie_setup(struct device *dev, int ret,
        init_waitqueue_head(&devinfo->mbdata_resp_wait);
 
        brcmf_pcie_intr_enable(devinfo);
+       brcmf_pcie_hostready(devinfo);
        if (brcmf_attach(&devinfo->pdev->dev, devinfo->settings) == 0)
                return;
 
@@ -1950,6 +1959,7 @@ static int brcmf_pcie_pm_leave_D3(struct device *dev)
                brcmf_pcie_select_core(devinfo, BCMA_CORE_PCIE2);
                brcmf_bus_change_state(bus, BRCMF_BUS_UP);
                brcmf_pcie_intr_enable(devinfo);
+               brcmf_pcie_hostready(devinfo);
                return 0;
        }
 
-- 
1.9.1