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Versatile platform updates for the v5.3 kernel cycle:

Browse Source 
- Drop a slew of unused CLCD platform data
 - Fix OF reference counts
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Merge tag 'versatile-v5.3-armsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into arm/soc

Versatile platform updates for the v5.3 kernel cycle:
- Drop a slew of unused CLCD platform data
- Fix OF reference counts

* tag 'versatile-v5.3-armsoc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
  ARM: versatile: Drop CLCD platform data
  ARM: versatile: fix a leaked reference by addingmissing of_node_put

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2019-06-17 05:11:53 -07:00
commit 449c1cd297
2 changed files with 5 additions and 187 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

164
arch/arm/mach-versatile/versatile_dt.c
View File

@ -16,8 +16,6 @@
#include <linux/of_platform.h>
#include <linux/slab.h>
#include <linux/amba/bus.h>
#include <linux/amba/clcd.h>
#include <linux/platform_data/video-clcd-versatile.h>
#include <linux/amba/mmci.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -34,14 +32,12 @@
*/
#define VERSATILE_SYS_PCICTL_OFFSET 0x44
#define VERSATILE_SYS_MCI_OFFSET 0x48
#define VERSATILE_SYS_CLCD_OFFSET 0x50
/*
* VERSATILE peripheral addresses
*/
#define VERSATILE_MMCI0_BASE 0x10005000 /* MMC interface */
#define VERSATILE_MMCI1_BASE 0x1000B000 /* MMC Interface */
#define VERSATILE_CLCD_BASE 0x10120000 /* CLCD */
#define VERSATILE_SCTL_BASE 0x101E0000 /* System controller */
#define VERSATILE_IB2_BASE 0x24000000 /* IB2 module */
#define VERSATILE_IB2_CTL_BASE (VERSATILE_IB2_BASE + 0x03000000)
@ -83,158 +79,6 @@ static struct mmci_platform_data mmc1_plat_data = {
.status = mmc_status,
};
/*
* CLCD support.
*/
#define SYS_CLCD_MODE_MASK (3 << 0)
#define SYS_CLCD_MODE_888 (0 << 0)
#define SYS_CLCD_MODE_5551 (1 << 0)
#define SYS_CLCD_MODE_565_RLSB (2 << 0)
#define SYS_CLCD_MODE_565_BLSB (3 << 0)
#define SYS_CLCD_NLCDIOON (1 << 2)
#define SYS_CLCD_VDDPOSSWITCH (1 << 3)
#define SYS_CLCD_PWR3V5SWITCH (1 << 4)
#define SYS_CLCD_ID_MASK (0x1f << 8)
#define SYS_CLCD_ID_SANYO_3_8 (0x00 << 8)
#define SYS_CLCD_ID_UNKNOWN_8_4 (0x01 << 8)
#define SYS_CLCD_ID_EPSON_2_2 (0x02 << 8)
#define SYS_CLCD_ID_SANYO_2_5 (0x07 << 8)
#define SYS_CLCD_ID_VGA (0x1f << 8)
static bool is_sanyo_2_5_lcd;
/*
* Disable all display connectors on the interface module.
*/
static void versatile_clcd_disable(struct clcd_fb *fb)
{
void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET;
u32 val;
val = readl(sys_clcd);
val &= ~SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
writel(val, sys_clcd);
/*
* If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light off
*/
if (of_machine_is_compatible("arm,versatile-ab") && is_sanyo_2_5_lcd) {
unsigned long ctrl;
ctrl = readl(versatile_ib2_ctrl);
ctrl &= ~0x01;
writel(ctrl, versatile_ib2_ctrl);
}
}
/*
* Enable the relevant connector on the interface module.
*/
static void versatile_clcd_enable(struct clcd_fb *fb)
{
struct fb_var_screeninfo *var = &fb->fb.var;
void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET;
u32 val;
val = readl(sys_clcd);
val &= ~SYS_CLCD_MODE_MASK;
switch (var->green.length) {
case 5:
val |= SYS_CLCD_MODE_5551;
break;
case 6:
if (var->red.offset == 0)
val |= SYS_CLCD_MODE_565_RLSB;
else
val |= SYS_CLCD_MODE_565_BLSB;
break;
case 8:
val |= SYS_CLCD_MODE_888;
break;
}
/*
* Set the MUX
*/
writel(val, sys_clcd);
/*
* And now enable the PSUs
*/
val |= SYS_CLCD_NLCDIOON | SYS_CLCD_PWR3V5SWITCH;
writel(val, sys_clcd);
/*
* If the LCD is Sanyo 2x5 in on the IB2 board, turn the back-light on
*/
if (of_machine_is_compatible("arm,versatile-ab") && is_sanyo_2_5_lcd) {
unsigned long ctrl;
ctrl = readl(versatile_ib2_ctrl);
ctrl |= 0x01;
writel(ctrl, versatile_ib2_ctrl);
}
}
/*
* Detect which LCD panel is connected, and return the appropriate
* clcd_panel structure. Note: we do not have any information on
* the required timings for the 8.4in panel, so we presently assume
* VGA timings.
*/
static int versatile_clcd_setup(struct clcd_fb *fb)
{
void __iomem *sys_clcd = versatile_sys_base + VERSATILE_SYS_CLCD_OFFSET;
const char *panel_name;
u32 val;
is_sanyo_2_5_lcd = false;
val = readl(sys_clcd) & SYS_CLCD_ID_MASK;
if (val == SYS_CLCD_ID_SANYO_3_8)
panel_name = "Sanyo TM38QV67A02A";
else if (val == SYS_CLCD_ID_SANYO_2_5) {
panel_name = "Sanyo QVGA Portrait";
is_sanyo_2_5_lcd = true;
} else if (val == SYS_CLCD_ID_EPSON_2_2)
panel_name = "Epson L2F50113T00";
else if (val == SYS_CLCD_ID_VGA)
panel_name = "VGA";
else {
printk(KERN_ERR "CLCD: unknown LCD panel ID 0x%08x, using VGA\n",
val);
panel_name = "VGA";
}
fb->panel = versatile_clcd_get_panel(panel_name);
if (!fb->panel)
return -EINVAL;
return versatile_clcd_setup_dma(fb, SZ_1M);
}
static void versatile_clcd_decode(struct clcd_fb *fb, struct clcd_regs *regs)
{
clcdfb_decode(fb, regs);
/* Always clear BGR for RGB565: we do the routing externally */
if (fb->fb.var.green.length == 6)
regs->cntl &= ~CNTL_BGR;
}
static struct clcd_board clcd_plat_data = {
.name = "Versatile",
.caps = CLCD_CAP_5551 | CLCD_CAP_565 | CLCD_CAP_888,
.check = clcdfb_check,
.decode = versatile_clcd_decode,
.disable = versatile_clcd_disable,
.enable = versatile_clcd_enable,
.setup = versatile_clcd_setup,
.mmap = versatile_clcd_mmap_dma,
.remove = versatile_clcd_remove_dma,
};
/*
* Lookup table for attaching a specific name and platform_data pointer to
* devices as they get created by of_platform_populate(). Ideally this table
@ -244,7 +88,6 @@ static struct clcd_board clcd_plat_data = {
struct of_dev_auxdata versatile_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI0_BASE, "fpga:05", &mmc0_plat_data),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_MMCI1_BASE, "fpga:0b", &mmc1_plat_data),
OF_DEV_AUXDATA("arm,primecell", VERSATILE_CLCD_BASE, "dev:20", &clcd_plat_data),
{}
};
@ -299,12 +142,12 @@ static void __init versatile_dt_pci_init(void)
* driver had it so we will keep it.
*/
writel(1, versatile_sys_base + VERSATILE_SYS_PCICTL_OFFSET);
return;
goto out_put_node;
}
newprop = kzalloc(sizeof(*newprop), GFP_KERNEL);
if (!newprop)
return;
goto out_put_node;
newprop->name = kstrdup("status", GFP_KERNEL);
newprop->value = kstrdup("disabled", GFP_KERNEL);
@ -312,6 +155,9 @@ static void __init versatile_dt_pci_init(void)
of_update_property(np, newprop);
pr_info("Not plugged into PCI backplane!\n");
out_put_node:
of_node_put(np);
}
static void __init versatile_dt_init(void)

28
include/linux/platform_data/video-clcd-versatile.h
View File

@ -1,28 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PLAT_CLCD_H
#define PLAT_CLCD_H
#ifdef CONFIG_PLAT_VERSATILE_CLCD
struct clcd_panel *versatile_clcd_get_panel(const char *);
int versatile_clcd_setup_dma(struct clcd_fb *, unsigned long);
int versatile_clcd_mmap_dma(struct clcd_fb *, struct vm_area_struct *);
void versatile_clcd_remove_dma(struct clcd_fb *);
#else
static inline struct clcd_panel *versatile_clcd_get_panel(const char *s)
{
return NULL;
}
static inline int versatile_clcd_setup_dma(struct clcd_fb *fb, unsigned long framesize)
{
return -ENODEV;
}
static inline int versatile_clcd_mmap_dma(struct clcd_fb *fb, struct vm_area_struct *vm)
{
return -ENODEV;
}
static inline void versatile_clcd_remove_dma(struct clcd_fb *fb)
{
}
#endif
#endif