target/linux/generic/patches-4.4/070-v4.6-0001-bgmac-add-helper-checking-for-BCM4707-BCM53018-chip-.patch

   1 From 387b75f8b31437792e8334390fdf5cf060d1e3da Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Tue, 2 Feb 2016 07:47:14 +0100
   4 Subject: [PATCH] bgmac: add helper checking for BCM4707 / BCM53018 chip id
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Chipsets with BCM4707 / BCM53018 ID require special handling at a few
  10 places in the code. It's likely there will be more IDs to check in the
  11 future. To simplify it add this trivial helper.
  12
  13 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  14 Signed-off-by: David S. Miller <davem@davemloft.net>
  15 ---
  16  drivers/net/ethernet/broadcom/bgmac.c | 30 ++++++++++++++++--------------
  17  1 file changed, 16 insertions(+), 14 deletions(-)
  18
  19 --- a/drivers/net/ethernet/broadcom/bgmac.c
  20 +++ b/drivers/net/ethernet/broadcom/bgmac.c
  21 @@ -26,6 +26,17 @@ static const struct bcma_device_id bgmac
  22  };
  23  MODULE_DEVICE_TABLE(bcma, bgmac_bcma_tbl);
  24
  25 +static inline bool bgmac_is_bcm4707_family(struct bgmac *bgmac)
  26 +{
  27 +       switch (bgmac->core->bus->chipinfo.id) {
  28 +       case BCMA_CHIP_ID_BCM4707:
  29 +       case BCMA_CHIP_ID_BCM53018:
  30 +               return true;
  31 +       default:
  32 +               return false;
  33 +       }
  34 +}
  35 +
  36  static bool bgmac_wait_value(struct bcma_device *core, u16 reg, u32 mask,
  37                              u32 value, int timeout)
  38  {
  39 @@ -991,11 +1002,9 @@ static void bgmac_mac_speed(struct bgmac
  40  static void bgmac_miiconfig(struct bgmac *bgmac)
  41  {
  42         struct bcma_device *core = bgmac->core;
  43 -       struct bcma_chipinfo *ci = &core->bus->chipinfo;
  44         u8 imode;
  45
  46 -       if (ci->id == BCMA_CHIP_ID_BCM4707 ||
  47 -           ci->id == BCMA_CHIP_ID_BCM53018) {
  48 +       if (bgmac_is_bcm4707_family(bgmac)) {
  49                 bcma_awrite32(core, BCMA_IOCTL,
  50                               bcma_aread32(core, BCMA_IOCTL) | 0x40 |
  51                               BGMAC_BCMA_IOCTL_SW_CLKEN);
  52 @@ -1059,9 +1068,7 @@ static void bgmac_chip_reset(struct bgma
  53         }
  54
  55         /* Request Misc PLL for corerev > 2 */
  56 -       if (core->id.rev > 2 &&
  57 -           ci->id != BCMA_CHIP_ID_BCM4707 &&
  58 -           ci->id != BCMA_CHIP_ID_BCM53018) {
  59 +       if (core->id.rev > 2 && !bgmac_is_bcm4707_family(bgmac)) {
  60                 bgmac_set(bgmac, BCMA_CLKCTLST,
  61                           BGMAC_BCMA_CLKCTLST_MISC_PLL_REQ);
  62                 bgmac_wait_value(bgmac->core, BCMA_CLKCTLST,
  63 @@ -1197,8 +1204,7 @@ static void bgmac_enable(struct bgmac *b
  64                 break;
  65         }
  66
  67 -       if (ci->id != BCMA_CHIP_ID_BCM4707 &&
  68 -           ci->id != BCMA_CHIP_ID_BCM53018) {
  69 +       if (!bgmac_is_bcm4707_family(bgmac)) {
  70                 rxq_ctl = bgmac_read(bgmac, BGMAC_RXQ_CTL);
  71                 rxq_ctl &= ~BGMAC_RXQ_CTL_MDP_MASK;
  72                 bp_clk = bcma_pmu_get_bus_clock(&bgmac->core->bus->drv_cc) /
  73 @@ -1477,14 +1483,12 @@ static int bgmac_fixed_phy_register(stru
  74
  75  static int bgmac_mii_register(struct bgmac *bgmac)
  76  {
  77 -       struct bcma_chipinfo *ci = &bgmac->core->bus->chipinfo;
  78         struct mii_bus *mii_bus;
  79         struct phy_device *phy_dev;
  80         char bus_id[MII_BUS_ID_SIZE + 3];
  81         int i, err = 0;
  82
  83 -       if (ci->id == BCMA_CHIP_ID_BCM4707 ||
  84 -           ci->id == BCMA_CHIP_ID_BCM53018)
  85 +       if (bgmac_is_bcm4707_family(bgmac))
  86                 return bgmac_fixed_phy_register(bgmac);
  87
  88         mii_bus = mdiobus_alloc();
  89 @@ -1555,7 +1559,6 @@ static void bgmac_mii_unregister(struct
  90  /* http://bcm-v4.sipsolutions.net/mac-gbit/gmac/chipattach */
  91  static int bgmac_probe(struct bcma_device *core)
  92  {
  93 -       struct bcma_chipinfo *ci = &core->bus->chipinfo;
  94         struct net_device *net_dev;
  95         struct bgmac *bgmac;
  96         struct ssb_sprom *sprom = &core->bus->sprom;
  97 @@ -1641,8 +1644,7 @@ static int bgmac_probe(struct bcma_devic
  98         bgmac_chip_reset(bgmac);
  99
 100         /* For Northstar, we have to take all GMAC core out of reset */
 101 -       if (ci->id == BCMA_CHIP_ID_BCM4707 ||
 102 -           ci->id == BCMA_CHIP_ID_BCM53018) {
 103 +       if (bgmac_is_bcm4707_family(bgmac)) {
 104                 struct bcma_device *ns_core;
 105                 int ns_gmac;
 106