diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 11:23:17 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-01-05 11:23:17 -0800 |
commit | 1205b62390eed4e747232d183fbf412a5aecacd9 (patch) | |
tree | 7fde1a5aaee01a23e6ea4137329f332d5e179adf /drivers/pcmcia/pxa2xx_mainstone.c | |
parent | 9ee3b3f4a5eb523ef27675ac2fcd2269b9d68767 (diff) | |
parent | 6de92920a717ea2b7b45bb3d651b8bb951eab185 (diff) |
Merge tag 'for-4.21' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
"Included in this update:
- Florian Fainelli noticed that userspace segfaults caused by the
lack of kernel-userspace helpers was hard to diagnose; we now issue
a warning when userspace tries to use the helpers but the kernel
has them disabled.
- Ben Dooks wants compatibility for the old ATAG serial number with
DT systems.
- Some cleanup of assembly by Nicolas Pitre.
- User accessors optimisation from Vincent Whitchurch.
- More robust kdump on SMP systems from Yufen Wang.
- Sebastian Andrzej Siewior noticed problems with the SMP "boot_lock"
on RT kernels, and so we convert the Versatile series of platforms
to use a raw spinlock instead, consolidating the Versatile
implementation. We entirely remove the boot_lock on OMAP systems,
where it's unnecessary. Further patches for other systems will be
submitted for the following merge window.
- Start switching old StrongARM-11x0 systems to use gpiolib rather
than their private GPIO implementation - mostly PCMCIA bits.
- ARM Kconfig cleanups.
- Cleanup a mostly harmless mistake in the recent Spectre patch in
4.20 (which had the effect that data that can be placed into the
init sections was incorrectly always placed in the rodata section)"
* tag 'for-4.21' of git://git.armlinux.org.uk/~rmk/linux-arm: (25 commits)
ARM: omap2: remove unnecessary boot_lock
ARM: versatile: rename and comment SMP implementation
ARM: versatile: convert boot_lock to raw
ARM: vexpress/realview: consolidate immitation CPU hotplug
ARM: fix the cockup in the previous patch
ARM: sa1100/cerf: switch to using gpio_led_register_device()
ARM: sa1100/assabet: switch to using gpio leds
ARM: sa1100/assabet: add gpio keys support for right-hand two buttons
ARM: sa1111: remove legacy GPIO interfaces
pcmcia: sa1100*: remove redundant bvd1/bvd2 setting
ARM: pxa/lubbock: switch PCMCIA to MAX1600 library
ARM: pxa/mainstone: switch PCMCIA to MAX1600 library and gpiod APIs
ARM: sa1100/neponset: switch PCMCIA to MAX1600 library and gpiod APIs
ARM: sa1100/jornada720: switch PCMCIA to gpiod APIs
pcmcia: add MAX1600 library
ARM: sa1100: explicitly register sa11x0-pcmcia devices
ARM: 8813/1: Make aligned 2-byte getuser()/putuser() atomic on ARMv6+
ARM: 8812/1: Optimise copy_{from/to}_user for !CPU_USE_DOMAINS
ARM: 8811/1: always list both ldrd/strd registers explicitly
ARM: 8808/1: kexec:offline panic_smp_self_stop CPU
...
Diffstat (limited to 'drivers/pcmcia/pxa2xx_mainstone.c')
-rw-r--r-- | drivers/pcmcia/pxa2xx_mainstone.c | 113 |
1 files changed, 34 insertions, 79 deletions
diff --git a/drivers/pcmcia/pxa2xx_mainstone.c b/drivers/pcmcia/pxa2xx_mainstone.c index 7e32e25cdcb2..770c7bf0171d 100644 --- a/drivers/pcmcia/pxa2xx_mainstone.c +++ b/drivers/pcmcia/pxa2xx_mainstone.c @@ -11,56 +11,55 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ - +#include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/errno.h> -#include <linux/interrupt.h> #include <linux/platform_device.h> #include <pcmcia/ss.h> #include <asm/mach-types.h> -#include <asm/irq.h> - -#include <mach/pxa2xx-regs.h> -#include <mach/mainstone.h> #include "soc_common.h" - +#include "max1600.h" static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { - /* - * Setup default state of GPIO outputs - * before we enable them as outputs. - */ - if (skt->nr == 0) { - skt->socket.pci_irq = MAINSTONE_S0_IRQ; - skt->stat[SOC_STAT_CD].irq = MAINSTONE_S0_CD_IRQ; - skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; - skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S0_STSCHG_IRQ; - skt->stat[SOC_STAT_BVD1].name = "PCMCIA0 STSCHG"; - } else { - skt->socket.pci_irq = MAINSTONE_S1_IRQ; - skt->stat[SOC_STAT_CD].irq = MAINSTONE_S1_CD_IRQ; - skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; - skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S1_STSCHG_IRQ; - skt->stat[SOC_STAT_BVD1].name = "PCMCIA1 STSCHG"; - } - return 0; + struct device *dev = skt->socket.dev.parent; + struct max1600 *m; + int ret; + + skt->stat[SOC_STAT_CD].name = skt->nr ? "bdetect" : "adetect"; + skt->stat[SOC_STAT_BVD1].name = skt->nr ? "bbvd1" : "abvd1"; + skt->stat[SOC_STAT_BVD2].name = skt->nr ? "bbvd2" : "abvd2"; + skt->stat[SOC_STAT_RDY].name = skt->nr ? "bready" : "aready"; + skt->stat[SOC_STAT_VS1].name = skt->nr ? "bvs1" : "avs1"; + skt->stat[SOC_STAT_VS2].name = skt->nr ? "bvs2" : "avs2"; + + skt->gpio_reset = devm_gpiod_get(dev, skt->nr ? "breset" : "areset", + GPIOD_OUT_HIGH); + if (IS_ERR(skt->gpio_reset)) + return PTR_ERR(skt->gpio_reset); + + ret = max1600_init(dev, &m, skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A, + MAX1600_CODE_HIGH); + if (ret) + return ret; + + skt->driver_data = m; + + return soc_pcmcia_request_gpiods(skt); } -static unsigned long mst_pcmcia_status[2]; +static unsigned int mst_pcmcia_bvd1_status[2]; static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { - unsigned long status, flip; - - status = (skt->nr == 0) ? MST_PCMCIA0 : MST_PCMCIA1; - flip = (status ^ mst_pcmcia_status[skt->nr]) & MST_PCMCIA_nSTSCHG_BVD1; + unsigned int flip = mst_pcmcia_bvd1_status[skt->nr] ^ state->bvd1; /* * Workaround for STSCHG which can't be deasserted: @@ -68,62 +67,18 @@ static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt, * as needed to avoid IRQ locks. */ if (flip) { - mst_pcmcia_status[skt->nr] = status; - if (status & MST_PCMCIA_nSTSCHG_BVD1) - enable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ - : MAINSTONE_S1_STSCHG_IRQ ); + mst_pcmcia_bvd1_status[skt->nr] = state->bvd1; + if (state->bvd1) + enable_irq(skt->stat[SOC_STAT_BVD1].irq); else - disable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ - : MAINSTONE_S1_STSCHG_IRQ ); + disable_irq(skt->stat[SOC_STAT_BVD2].irq); } - - state->detect = (status & MST_PCMCIA_nCD) ? 0 : 1; - state->ready = (status & MST_PCMCIA_nIRQ) ? 1 : 0; - state->bvd1 = (status & MST_PCMCIA_nSTSCHG_BVD1) ? 1 : 0; - state->bvd2 = (status & MST_PCMCIA_nSPKR_BVD2) ? 1 : 0; - state->vs_3v = (status & MST_PCMCIA_nVS1) ? 0 : 1; - state->vs_Xv = (status & MST_PCMCIA_nVS2) ? 0 : 1; } static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { - unsigned long power = 0; - int ret = 0; - - switch (state->Vcc) { - case 0: power |= MST_PCMCIA_PWR_VCC_0; break; - case 33: power |= MST_PCMCIA_PWR_VCC_33; break; - case 50: power |= MST_PCMCIA_PWR_VCC_50; break; - default: - printk(KERN_ERR "%s(): bad Vcc %u\n", - __func__, state->Vcc); - ret = -1; - } - - switch (state->Vpp) { - case 0: power |= MST_PCMCIA_PWR_VPP_0; break; - case 120: power |= MST_PCMCIA_PWR_VPP_120; break; - default: - if(state->Vpp == state->Vcc) { - power |= MST_PCMCIA_PWR_VPP_VCC; - } else { - printk(KERN_ERR "%s(): bad Vpp %u\n", - __func__, state->Vpp); - ret = -1; - } - } - - if (state->flags & SS_RESET) - power |= MST_PCMCIA_RESET; - - switch (skt->nr) { - case 0: MST_PCMCIA0 = power; break; - case 1: MST_PCMCIA1 = power; break; - default: ret = -1; - } - - return ret; + return max1600_configure(skt->driver_data, state->Vcc, state->Vpp); } static struct pcmcia_low_level mst_pcmcia_ops __initdata = { |