diff options
author | Tony Lindgren <tony@atomide.com> | 2010-07-05 17:31:28 +0400 |
---|---|---|
committer | Tony Lindgren <tony@atomide.com> | 2010-07-05 17:31:28 +0400 |
commit | dba638d22d5af5486a861e08ab46e57abef7049a (patch) | |
tree | 58866d6b2f93fc52c15e63ccdf5b8eb264061583 /arch/arm/plat-omap/usb.c | |
parent | f40fd0e215b1bde4e43add1aacbe6faf6dbbea53 (diff) | |
download | linux-dba638d22d5af5486a861e08ab46e57abef7049a.tar.xz |
omap: Separate out omap2 FS USB platform init functions
We want to split old FS USB platform init code and stop doing pin multiplexing
under plat-omap. First move 24xx specific init code into omap2_usb[012]_init
functions.
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/usb.c')
-rw-r--r-- | arch/arm/plat-omap/usb.c | 252 |
1 files changed, 157 insertions, 95 deletions
diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c index d3bf17cd36f3..9c4929a33e52 100644 --- a/arch/arm/plat-omap/usb.c +++ b/arch/arm/plat-omap/usb.c @@ -115,15 +115,56 @@ static void omap2_usb2_enable_5pinunitll(void) omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0); } +static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device) +{ + u32 syscon1 = 0; + + omap2_usb_devconf_clear(0, USB_BIDIR_TLL); + + if (nwires == 0) + return 0; + + if (is_device) + omap_cfg_reg(J20_24XX_USB0_PUEN); + + omap_cfg_reg(K18_24XX_USB0_DAT); + omap_cfg_reg(K19_24XX_USB0_TXEN); + omap_cfg_reg(J14_24XX_USB0_SE0); + if (nwires != 3) + omap_cfg_reg(J18_24XX_USB0_RCV); + + switch (nwires) { + case 3: + syscon1 = 2; + omap2_usb_devconf_set(0, USB_BIDIR); + break; + case 4: + syscon1 = 1; + omap2_usb_devconf_set(0, USB_BIDIR); + break; + case 6: + syscon1 = 3; + omap_cfg_reg(J19_24XX_USB0_VP); + omap_cfg_reg(K20_24XX_USB0_VM); + omap2_usb_devconf_set(0, USB_UNIDIR); + break; + default: + printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", + 0, nwires); + } + + return syscon1 << 16; +} + static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) { u32 syscon1 = 0; if (cpu_is_omap24xx()) - omap2_usb_devconf_clear(0, USB_BIDIR_TLL); + return omap2_usb0_init(nwires, is_device); if (nwires == 0) { - if (cpu_class_is_omap1() && !cpu_is_omap15xx()) { + if (!cpu_is_omap15xx()) { u32 l; /* pulldown D+/D- */ @@ -135,9 +176,7 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) } if (is_device) { - if (cpu_is_omap24xx()) - omap_cfg_reg(J20_24XX_USB0_PUEN); - else if (cpu_is_omap7xx()) { + if (cpu_is_omap7xx()) { omap_cfg_reg(AA17_7XX_USB_DM); omap_cfg_reg(W16_7XX_USB_PU_EN); omap_cfg_reg(W17_7XX_USB_VBUSI); @@ -147,8 +186,7 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) omap_cfg_reg(W4_USB_PUEN); } - /* internal transceiver (unavailable on 17xx, 24xx) */ - if (!cpu_class_is_omap2() && nwires == 2) { + if (nwires == 2) { u32 l; // omap_cfg_reg(P9_USB_DP); @@ -183,26 +221,18 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) return 0; } - if (cpu_is_omap24xx()) { - omap_cfg_reg(K18_24XX_USB0_DAT); - omap_cfg_reg(K19_24XX_USB0_TXEN); - omap_cfg_reg(J14_24XX_USB0_SE0); - if (nwires != 3) - omap_cfg_reg(J18_24XX_USB0_RCV); - } else { - omap_cfg_reg(V6_USB0_TXD); - omap_cfg_reg(W9_USB0_TXEN); - omap_cfg_reg(W5_USB0_SE0); - if (nwires != 3) - omap_cfg_reg(Y5_USB0_RCV); - } + omap_cfg_reg(V6_USB0_TXD); + omap_cfg_reg(W9_USB0_TXEN); + omap_cfg_reg(W5_USB0_SE0); + if (nwires != 3) + omap_cfg_reg(Y5_USB0_RCV); /* NOTE: SPEED and SUSP aren't configured here. OTG hosts * may be able to use I2C requests to set those bits along * with VBUS switching and overcurrent detection. */ - if (cpu_class_is_omap1() && nwires != 6) { + if (nwires != 6) { u32 l; l = omap_readl(USB_TRANSCEIVER_CTRL); @@ -213,21 +243,13 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) switch (nwires) { case 3: syscon1 = 2; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(0, USB_BIDIR); break; case 4: syscon1 = 1; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(0, USB_BIDIR); break; case 6: syscon1 = 3; - if (cpu_is_omap24xx()) { - omap_cfg_reg(J19_24XX_USB0_VP); - omap_cfg_reg(K20_24XX_USB0_VM); - omap2_usb_devconf_set(0, USB_UNIDIR); - } else { + { u32 l; omap_cfg_reg(AA9_USB0_VP); @@ -244,30 +266,66 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) return syscon1 << 16; } +static u32 __init omap2_usb1_init(unsigned nwires) +{ + u32 syscon1 = 0; + + omap2_usb_devconf_clear(1, USB_BIDIR_TLL); + + if (nwires == 0) + return 0; + + /* NOTE: board-specific code must set up pin muxing for usb1, + * since each signal could come out on either of two balls. + */ + + switch (nwires) { + case 2: + /* NOTE: board-specific code must override this setting if + * this TLL link is not using DP/DM + */ + syscon1 = 1; + omap2_usb_devconf_set(1, USB_BIDIR_TLL); + break; + case 3: + syscon1 = 2; + omap2_usb_devconf_set(1, USB_BIDIR); + break; + case 4: + syscon1 = 1; + omap2_usb_devconf_set(1, USB_BIDIR); + break; + case 6: + default: + printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", + 1, nwires); + } + + return syscon1 << 20; +} + static u32 __init omap_usb1_init(unsigned nwires) { u32 syscon1 = 0; - if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) { + if (cpu_is_omap24xx()) + return omap2_usb1_init(nwires); + + if (!cpu_is_omap15xx() && nwires != 6) { u32 l; l = omap_readl(USB_TRANSCEIVER_CTRL); l &= ~CONF_USB1_UNI_R; omap_writel(l, USB_TRANSCEIVER_CTRL); } - if (cpu_is_omap24xx()) - omap2_usb_devconf_clear(1, USB_BIDIR_TLL); - if (nwires == 0) return 0; /* external transceiver */ - if (cpu_class_is_omap1()) { - omap_cfg_reg(USB1_TXD); - omap_cfg_reg(USB1_TXEN); - if (nwires != 3) - omap_cfg_reg(USB1_RCV); - } + omap_cfg_reg(USB1_TXD); + omap_cfg_reg(USB1_TXEN); + if (nwires != 3) + omap_cfg_reg(USB1_RCV); if (cpu_is_omap15xx()) { omap_cfg_reg(USB1_SEO); @@ -280,10 +338,6 @@ static u32 __init omap_usb1_init(unsigned nwires) } else if (cpu_is_omap1710()) { omap_cfg_reg(R13_1710_USB1_SE0); // SUSP - } else if (cpu_is_omap24xx()) { - /* NOTE: board-specific code must set up pin muxing for usb1, - * since each signal could come out on either of two balls. - */ } else { pr_debug("usb%d cpu unrecognized\n", 1); return 0; @@ -291,27 +345,14 @@ static u32 __init omap_usb1_init(unsigned nwires) switch (nwires) { case 2: - if (!cpu_is_omap24xx()) - goto bad; - /* NOTE: board-specific code must override this setting if - * this TLL link is not using DP/DM - */ - syscon1 = 1; - omap2_usb_devconf_set(1, USB_BIDIR_TLL); - break; + goto bad; case 3: syscon1 = 2; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(1, USB_BIDIR); break; case 4: syscon1 = 1; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(1, USB_BIDIR); break; case 6: - if (cpu_is_omap24xx()) - goto bad; syscon1 = 3; omap_cfg_reg(USB1_VP); omap_cfg_reg(USB1_VM); @@ -331,20 +372,70 @@ bad: return syscon1 << 20; } -static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup) +static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup) { u32 syscon1 = 0; - if (cpu_is_omap24xx()) { - omap2_usb2_disable_5pinbitll(); - alt_pingroup = 0; + omap2_usb2_disable_5pinbitll(); + alt_pingroup = 0; + + /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ + if (alt_pingroup || nwires == 0) + return 0; + + omap_cfg_reg(Y11_24XX_USB2_DAT); + omap_cfg_reg(AA10_24XX_USB2_SE0); + if (nwires > 2) + omap_cfg_reg(AA12_24XX_USB2_TXEN); + if (nwires > 3) + omap_cfg_reg(AA6_24XX_USB2_RCV); + + switch (nwires) { + case 2: + /* NOTE: board-specific code must override this setting if + * this TLL link is not using DP/DM + */ + syscon1 = 1; + omap2_usb_devconf_set(2, USB_BIDIR_TLL); + break; + case 3: + syscon1 = 2; + omap2_usb_devconf_set(2, USB_BIDIR); + break; + case 4: + syscon1 = 1; + omap2_usb_devconf_set(2, USB_BIDIR); + break; + case 5: + omap_cfg_reg(AA4_24XX_USB2_TLLSE0); + /* NOTE: board-specific code must override this setting if + * this TLL link is not using DP/DM. Something must also + * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED} + */ + syscon1 = 3; + omap2_usb2_enable_5pinunitll(); + break; + case 6: + default: + printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", + 2, nwires); } + return syscon1 << 24; +} + +static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup) +{ + u32 syscon1 = 0; + + if (cpu_is_omap24xx()) + return omap2_usb2_init(nwires, alt_pingroup); + /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ if (alt_pingroup || nwires == 0) return 0; - if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) { + if (!cpu_is_omap15xx() && nwires != 6) { u32 l; l = omap_readl(USB_TRANSCEIVER_CTRL); @@ -367,53 +458,24 @@ static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup) if (nwires != 3) omap_cfg_reg(Y5_USB2_RCV); // FIXME omap_cfg_reg(USB2_SPEED); - } else if (cpu_is_omap24xx()) { - omap_cfg_reg(Y11_24XX_USB2_DAT); - omap_cfg_reg(AA10_24XX_USB2_SE0); - if (nwires > 2) - omap_cfg_reg(AA12_24XX_USB2_TXEN); - if (nwires > 3) - omap_cfg_reg(AA6_24XX_USB2_RCV); } else { pr_debug("usb%d cpu unrecognized\n", 1); return 0; } - // if (cpu_class_is_omap1()) omap_cfg_reg(USB2_SUSP); + // omap_cfg_reg(USB2_SUSP); switch (nwires) { case 2: - if (!cpu_is_omap24xx()) - goto bad; - /* NOTE: board-specific code must override this setting if - * this TLL link is not using DP/DM - */ - syscon1 = 1; - omap2_usb_devconf_set(2, USB_BIDIR_TLL); - break; + goto bad; case 3: syscon1 = 2; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(2, USB_BIDIR); break; case 4: syscon1 = 1; - if (cpu_is_omap24xx()) - omap2_usb_devconf_set(2, USB_BIDIR); break; case 5: - if (!cpu_is_omap24xx()) - goto bad; - omap_cfg_reg(AA4_24XX_USB2_TLLSE0); - /* NOTE: board-specific code must override this setting if - * this TLL link is not using DP/DM. Something must also - * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED} - */ - syscon1 = 3; - omap2_usb2_enable_5pinunitll(); - break; + goto bad; case 6: - if (cpu_is_omap24xx()) - goto bad; syscon1 = 3; if (cpu_is_omap15xx()) { omap_cfg_reg(USB2_VP); |